Technical
Documentation
Hand-held Analyzer 2250 Light
With Sound Level Meter Software BZ-7130
1/1-oct. Frequency Analysis Software BZ-7131
1/3-oct. Frequency Analysis Software BZ-7132
Logging Software BZ-7133
Signal Recording Option BZ-7226 and
Tone Assessment Option BZ-7231
HEADQUARTERS: Brüel & Kjær Sound & Vibration Measurement A/S · DK-2850 Nærum · Denmark
Telephone: +45 7741 2000 · Fax: +45 4580 1405 · www.bksv.com · info@bksv.com
Local representatives and service organisations worldwide
ËBE-1766---HÎ
User Manual
English BE 1766 –23
Hand-held Analyzer
2250 Light
with the following 2250 Light Software:
Sound Level Meter Software BZ-7130
1/1-oct. Frequency Analysis Software BZ-7131
1/3-oct. Frequency Analysis Software BZ-7132
Logging Software BZ-7133
Signal Recording Option BZ-7226
Tone Assessment Option BZ-7231
User Manual
Valid for all hardware versions and from software versions 4.4
BE 176623
February 2015
Safety Considerations
This apparatus has been designed and tested in accordance with IEC 61010 – 1 and EN 61010 – 1
Safety Requirements for Electrical Equipment for Measurement, Control and Laboratory
Use. This manual contains information and warnings which must be followed to ensure safe
operation and to retain the apparatus in safe condition. Special note should be made of the following:
Safety Symbols
The apparatus will be marked with this symbol when it is important that you refer to the
associated warning statements given in the manual.
Protective Earth Terminal
Hazardous Voltage
Explosion Hazard
The equipment is not designed to be used in potentially explosive environments. It should not be
operated in the presence of flammable liquids or gases.
Warnings
•
•
•
Switch off all power to equipment before connecting or disconnecting their digital interface.
Failure to do so could damage the equipment.
Whenever it is likely that the correct function or operating safety of the apparatus has been
impaired, it must be made inoperative and be secured against unintended operation.
Any adjustment, maintenance and repair of the open apparatus under voltage must be avoided
as far as possible and, if unavoidable, must be carried out only by trained service personnel.
• Do not dispose of electronic equipment or batteries as unsorted municipal waste
• It is your responsibility to contribute to a clean and healthy environment by using
the appropriate local return and collection systems
• Hazardous substances in electronic equipment or batteries may have detrimental
effects on the environment and human health
• The symbol shown to the left indicates that separate collection systems must be used
for any discarded equipment or batteries marked with that symbol
• Waste electrical and electronic equipment or batteries may be returned to your
local Brüel & Kjær representative or to Brüel & Kjær Headquarters for disposal
Trademarks
Microsoft, Excel, Internet Explorer, Hotmail and Windows are registered trademarks of Microsoft
Corporation · PCL is a registered trademark of the Hewlett-Packard Company · Google Maps and
Chrome are trademarks of Google Inc. · Mozilla and Firefox are registered trademarks of the
Mozilla Foundation · Apple, Safari and iPhone are registered trademarks of Apple Inc. · Go Wi-Fi!
is a registered trademark of Socket Mobile, Inc. · Intel is a registered trademark and Core is a
trademark of Intel Corporation or its subsidiaries · Airlink and Sierra Wireless are registered
trademarks of Sierra Wireless · JavaScript is a registered trademark of Sun Microsystems Inc.
Copyright  2006 – 2015, Brüel & Kjær Sound & Vibration Measurement A/S
All rights reserved. No part of this publication may be reproduced or distributed in any form, or by
any means, without prior written consent from Brüel & Kjær Sound & Vibration Measurement A/S,
Nærum, Denmark
Table of Contents
CHAPTER 1
Introduction......................................................................................................... 1
1.1
1.2
Welcome .............................................................................................................. 1
How to Use this Manual ....................................................................................... 1
CHAPTER 2
Assembling Your Analyzer ................................................................................ 3
2.1
2.2
2.3
2.4
2.5
Determining Your Hardware Version ................................................................... 3
Instrument Components....................................................................................... 4
Analyzer Inputs/Outputs....................................................................................... 6
Hardware Setup ................................................................................................. 11
Assembling 2250 Light....................................................................................... 12
CHAPTER 3
Making Your First Measurement ..................................................................... 15
3.1
3.2
3.3
3.4
3.5
3.6
Introduction ........................................................................................................
Point and Shoot .................................................................................................
Making a Measurement .....................................................................................
Save your Measurement....................................................................................
Documenting your Measurement.......................................................................
Switching Off......................................................................................................
15
15
16
21
22
23
CHAPTER 4
Getting to Know Your Analyzer....................................................................... 25
4.1
4.2
4.3
4.4
What is a Sound Level Meter?...........................................................................
What is the Hand-held Analyzer? ......................................................................
What is Measurement Partner Suite BZ-5503? .................................................
Basic Principles when using 2250 Light.............................................................
25
26
29
29
CHAPTER 5
Calibration......................................................................................................... 39
5.1
5.2
5.3
5.4
5.5
5.6
5.7
Introduction ........................................................................................................
Calibration Types ...............................................................................................
Standard Calibration ..........................................................................................
Calibration History..............................................................................................
Transducer Database ........................................................................................
Calibration Reminder .........................................................................................
Charge Injection Calibration...............................................................................
39
39
40
42
43
44
45
CHAPTER 6
Data Management............................................................................................. 49
6.1
6.2
6.3
Organising Measurements................................................................................. 49
Selecting Default Measurement Job/Path.......................................................... 51
Recalling Measurements ................................................................................... 51
CHAPTER 7
Connection to PC or Smart Phone.................................................................. 53
7.1
7.2
7.3
7.4
Introduction ........................................................................................................
Transferring Measurement Data to Your PC .....................................................
Post-processing and Reporting..........................................................................
Internet Browser for Online Display and Control of the Analyzer.......................
53
54
55
56
CHAPTER 8
Advanced Use of Your Analyzer
– Tips and Tricks .............................................................................................. 59
8.1
8.2
8.3
8.4
8.5
8.6
8.7
Setting Your Preferences on the Analyzer.........................................................
Modem/DynDNS Settings ..................................................................................
Network Settings................................................................................................
Notifications .......................................................................................................
Web Server ........................................................................................................
Connecting to Weather Stations and GPS Receivers........................................
Timers and Automatic Measurements ...............................................................
59
65
68
71
73
74
76
CHAPTER 9
Updating, Maintenance and Troubleshooting ............................................... 79
9.1
9.2
9.3
9.4
9.5
How to Install New Applications.........................................................................
How to Update/Upgrade Applications and Install New Languages....................
Troubleshooting .................................................................................................
Services at Brüel & Kjær for Type 2250 Light....................................................
Care, Cleaning and Storage ..............................................................................
79
79
82
88
89
CHAPTER 10
1/1- and 1/3-octave Frequency Analysis (Optional Modules)....................... 91
10.1
10.2
10.3
10.4
Setting up the Instrument...................................................................................
Controlling the Measurement.............................................................................
Displaying the Results .......................................................................................
Saving Results ...................................................................................................
91
92
92
96
CHAPTER 11
Logging (Optional Module).............................................................................. 97
11.1
11.2
11.3
11.4
Setting up the Instrument................................................................................... 98
Controlling the Measurement........................................................................... 100
Displaying the Results ..................................................................................... 100
Saving and Recalling Results .......................................................................... 105
CHAPTER 12
Signal Recording (Optional Module) ............................................................ 107
12.1
12.2
With Sound Level Meter and Frequency Analysis Software ............................ 107
With Logging Software..................................................................................... 110
CHAPTER 13
Tone Assessment Option BZ-7231 –
1/3-octave Method .......................................................................................... 117
13.1
13.2
13.3
13.4
13.5
13.6
13.7
General ............................................................................................................
Tone Assessment According to ISO 1996-2, Annex D ....................................
Setting up the Analyzer....................................................................................
Measuring ........................................................................................................
Logging Software BZ-7133 Template ..............................................................
Status Codes (Smileys) ...................................................................................
Recalling Saved Measurements ......................................................................
117
118
119
122
124
124
125
CHAPTER 14
Specifications ................................................................................................. 127
APPENDIX A
Setup Parameters ........................................................................................... 139
A.1
A.2
A.3
A.4
A.5
A.6
A.7
A.8
A.9
A.10
A.11
Input .................................................................................................................
Frequency Settings ..........................................................................................
Statistics...........................................................................................................
Measurement Control .....................................................................................
Logged Broadband ..........................................................................................
Logged Broadband (100 ms) ...........................................................................
Logged Spectrum.............................................................................................
Markers ............................................................................................................
Signal Recording..............................................................................................
Occupational Health.........................................................................................
Tone Assessment ............................................................................................
139
140
141
142
143
145
145
146
147
149
151
APPENDIX B
Measurement Parameters.............................................................................. 153
B.1
B.2
B.3
B.4
Total Measurement ..........................................................................................
Logged Measurement ......................................................................................
Logged (100 ms) Measurement.......................................................................
Instantaneous Measured Parameters (available at any time)..........................
154
157
159
159
APPENDIX C
Instrument Parameters .................................................................................. 163
C.1
C.2
C.3
C.4
Current Transducer..........................................................................................
Transducers .....................................................................................................
Calibration Setup .............................................................................................
Type 2250 Light Microphones..........................................................................
163
163
166
166
APPENDIX D
Preferences ..................................................................................................... 167
D.1
D.2
D.3
D.4
D.5
D.6
D.7
D.8
D.9
D.10
D.11
Display Settings ...............................................................................................
Power Settings.................................................................................................
Regional Settings.............................................................................................
Storage Settings ..............................................................................................
Headphone Settings ........................................................................................
Printer Settings ................................................................................................
Modem/DynDNS Settings ................................................................................
Network Settings..............................................................................................
Notification Settings .........................................................................................
Remote Access Settings..................................................................................
NMT Server Settings (Hardware Version 4 only).............................................
167
168
169
170
170
172
173
174
176
178
178
APPENDIX E
Glossary .......................................................................................................... 179
INDEX .................................................................................................................
189
1
Chapter 1
Introduction
1.1
Welcome
This user manual describes the 2250 Light (Type 2250-L), including:
•
Sound Level Meter Software for 2250 Light, BZ-7130
•
1/1-octave Frequency Analysis Software for 2250 Light, BZ-7131
•
1/3-octave Frequency Analysis Software for 2250 Light, BZ-7132
•
Logging Software for 2250 Light, BZ-7133
•
Signal Recording Option BZ-7226
•
Tone Assessment Option BZ-7231
The manual explains how to perform a basic sound measurement, which parameters you can
measure and how the hand-held analyzer should be operated. In addition, some practical hints
and guidelines are provided, including all relevant technical specifications. Finally, a glossary is
added to help with specific terminology found in this manual.
This manual is intended for all hardware versions (from 1 to 4). All hardware versions
support the latest application software covered in this manual.
1.2
How to Use this Manual
1.2.1
Conventions Used in this Manual
“Analyzer” refers to 2250 Light (Type 2250-L) unless otherwise specified.
Instructions and descriptions that refer to the analyzer pushbuttons are shown with the
pushbutton icons as seen on the analyzer. See Chapter 2 for a list of pushbutton icons and their
functions.
Icons, Buttons and Tabs Used on the Screen
Indicated by bold type face (for example, tap the Main Menu icon).
Hand-held Analyzer 2250 Light – User Manual
2
Parameter Text Appearing on the Screen
Parameters, instructions and descriptions appearing on the screen are indicated by italics (for
example, Measurement Mode).
Path Denotations
Indicated by capitals (for example, SETUP\BZ7222\).
Menu/Screen Navigation
Indicated by italics (for example, Setup > Frequency Settings > BB Peak).
1.2.2
Beginners
Before you read the rest of this manual, read Brüel & Kjær’s primer on Measuring Sound. This
will give you a basic idea of acoustic measurements. It can be found on the www.bksv.com
website, by typing ‘Primer’ in the search window. The website also contains lots of other
information you might find useful.
Further information is available in the on-line help installed on the analyzer.
1.2.3
Experienced Users of Acoustic Measurement Equipment
The manual is designed so that you do not have to read all of it to be able to use the
instrument. It is built around the most frequently used operations, these are as follows:
•
Assembling Your Analyzer (see Chapter 2)
•
Making Your First Measurement (see Chapter 3)
•
Getting to Know Your Analyzer (see Chapter 4)
•
Calibration (see Chapter 5)
•
Data Management (see Chapter 6)
•
Connection to PC or Smart Phone (see Chapter 7)
•
Advanced Use of Your Analyzer – Tips and Tricks (see Chapter 8)
•
Updating, Maintenance and Troubleshooting (see Chapter 9)
However, it is recommended that you read the entire manual for appropriate procedures on
how to use the analyzer to obtain accurate sound level measurement results.
3
Chapter 2
Assembling Your Analyzer
This chapter describes how to assemble and set up your analyzer. It provides a brief description
and an associated diagram showing the instrument’s components and the various input and
output connections. This enables you to start getting familiar with the instrument, while
assembling a system.
This is followed by an overview of the hardware components, showing all the main
configurations of the instrument and its accessories.
Finally, instructions are provided that explain how to assemble standard and optional hardware
components used in your system. Once you have followed the assembly instructions, your handheld analyzer will be ready to make measurements.
2.1
Determining Your Hardware Version
Over the years, the analyzer hardware has had a few updates. The most significant update
happened in 2012 with the introduction of hardware version 4 (also known as G4). To check if
your analyzer uses G4 hardware, click
in the Shortcut Bar at the bottom of the display
screen, and select About. The About menu will list the hardware and software versions
currently installed.
2.1.1
What is Different with G4 Hardware?
The differences in the G4 hardware compared to previous versions include:
•
A brighter screen which is easier to view in direct sunlight
•
The CF card slot is removed and replaced by a second SD card slot to take advantage of
the SD format’s dominance in the storage and Wi-Fi markets
•
The USB connector changed from USB 1.1 Mini B to USB 2.0 Micro AB. Besides the
faster connection speeds of USB 2.0, the Micro USB connector is more common
•
A second standard USB Type A socket was added for easier connection to USB
peripherals like modems, printers, GPS receivers, and USB to RS–232 adaptors
Hand-held Analyzer 2250 Light – User Manual
4
2.2
•
A 100 Mbps LAN connector is available
•
A Trigger Input socket for external trigger of signal recordings
•
An Input socket and an Output socket (both currently not in use)
Instrument Components
An overview of the main instrument components is provided in Fig.2.1. The descriptions that
follow refer to those components.
Fig.2.1
Instrument components
1
2
16
4
3
5
7
6
15
18
9
8
10
11
19
12
13
22
14
20
17
CHAPTER 2
Assembling Your Analyzer
5
1) Measurement Microphone: A Brüel & Kjær Prepolarized Free-field ½ Microphone is
used. A robust and reliable microphone with a wide frequency range
2) Preamplifier: Used to convert the high-impedance output of the microphone to low
impedance, suitable for driving long extension cables
3)
(Manual Event 1 Pushbutton): This allows you to manually indicate events during a
measurement. Using 2250 Light software BZ-7130, BZ-7131 and BZ-7132, you can
control signal recording, while with BZ-7133 you can insert an event marker and control
recordings
Note: Signal recording requires a Signal Recording Option BZ-7226 license as well.
4)
(Manual Event 2 Pushbutton): A second pushbutton is provided to allow you to
mark a second type of event during a measurement
5)
,
,
,
(Navigation Pushbuttons): These move the active screen component
(Field Selector) and navigate the user interface
6)
(Back-erase Pushbutton): This allows you to erase the last 5 seconds of measurement
data or to insert an Exclude Marker (BZ-7133 Logging Software for 2250 Light only)
7)
(Accept Pushbutton): This allows you to accept any changes you make to the
instrument’s setup
8)
(Reset Measurement Pushbutton): This allows you clear the current measurement
from the screen
9)
(Start/Pause Pushbutton): Press this to start, pause or continue with a measurement
10)
(Status Indicator): The red, yellow or green lights, (or LEDs), referred to as the
‘Traffic Light’ either side of the Start/Pause pushbutton, indicate important states of the
instrument during operation, that is, measurement stopped, paused or running. See Chapter
4 for further details
11)
(Save Pushbutton): This allows you to save measurement results
12) Display Screen: A high-contrast, black and white, touch-sensitive screen
13)
(Main Menu Icon): This calls up the Main Menu, which allows you to navigate
immediately to all the main functions of the instrument, such as Setup, Explorer (or Databrowser), Preferences, and the Calibration procedure
14)
(Power-on Pushbutton): Turns the instrument on and off. If held in for 1 second, the
instrument goes into standby mode; if held in for more than 4 seconds, it turns the
instrument off
15) Stylus: Stored in a holder on the side of the instrument, for use on the touch-sensitive
screen. You can choose to use the stylus or the pushbuttons, depending on your preference
and the measurement situation. (Also see section 4.4.5.)
16) Top Socket: This is the microphone input socket for 2250 Light. The Measurement
Microphone and Preamplifier (items 1 and 2 respectively) are connected directly to this
socket. For more details see section 2.3 that follows
Hand-held Analyzer 2250 Light – User Manual
6
17) Tripod Mounting Thread: Use this to mount 2250 Light onto the tripod and/or tripod
extension
18) Wrist Strap/Tripod Mounting Thread: Use this to attach the wrist strap to 2250 Light
for added security, or use it to mount 2250 Light onto the tripod and/or tripod extension
using the tripod adaptor UA-1673
19) Internal Battery Pack: Rechargeable, high-capacity Li-Ion battery pack to power 2250
Light
20) Hinged Cover: A removable plastic cover is provided, which is hinged at the top to
provide protection for the connector panel underneath. To remove, open the cover and pull
the hinge out of the slot at the top of the connector panel. The cover includes a rubber
insert printed with an overview of the main connectors and reset button for easy
recognition. Indents are provided on the inside of the cover (behind the insert) that allow
you to drill holes in the plastic cover, giving access to the main connectors underneath, so
you can fit the cover while power or other cables are connected.
21) High Speed USB and LAN Interfaces (hardware version 4 only): This is used to
provide fast and seamless transfer of data and recordings back to the office. Both highspeed interfaces, USB or LAN, can be used when the analyzer is located in close
proximity to the PC. However, if the analyzer is remote from the host PC, the LAN
interface has the further advantage of data download from anywhere within the same LAN
network. Both interfaces are not just used for data download, but also for remote
monitoring and remote control.
22) G4 Mark: Indicates that the hardware is version 4. Without this mark, your hardware is an
earlier version
2.3
Analyzer Inputs/Outputs
2.3.1
Hardware Versions 1 – 3:
Fig.2.2
Connector panel of 2250 Light for hardware versions 1 – 3
5
1
2
3
6
7
4
CHAPTER 2
Assembling Your Analyzer
7
1) USB Interface Socket: Use the supplied Mini USB Cable AO-1476 to connect
2) Earphone Socket: Use the optional Earphones HT-0015 to connect
3) External Power Socket: Use Mains Power Supply ZG-0426 to connect and charge
batteries
4) Battery Charge Indicator: An LED that indicates when the battery pack is being charged
from external power. See section 2.3.1 for more information on the LED color codes
5) Reset Button: Press to reset the analyzer if you have problems
6) Compact Flash Card Slot: Insert a CF memory card to save data or connect a modem
(either a compact flash modem or using an CF to Serial converter)
7) Secure Digital Card Slot: Insert a SD or SDHC memory card to save data
2.3.2
Hardware Version 4:
Fig.2.3
Connector panel of 2250 Light for hardware version 4
8
2
1
3
11
5
4
10
9
6
7
1) Micro USB Interface Socket: Use the supplied Micro USB Cable AO-1494 to connect
2) Earphone Socket: Use the optional Earphones HT-0015 to connect
3) Output Socket: Not used
4) Trigger Input Socket: Use this triaxial LEMO connector to control signal recording – see
section 2.3.1 for more information
5) Input Socket: Not used
6) External Power Socket: Use Mains Power Supply ZG-0426 to connect and charge batteries
7) Battery Charge Indicator: An LED that indicates when the battery pack is being charged
from external power. See section 2.3.1 for more information on the LED color codes
8) Reset Button: Press to reset the analyzer if you have problems
Hand-held Analyzer 2250 Light – User Manual
8
9) Secure Digital Card Slots: Insert a SD or SDHC memory card to save data
10) LAN Socket: Connect a LAN cable to synchronise measurement and setup data with a
host PC over a Local Area Network
11) USB A Socket: Connect to printers or other external USB devices
2.3.3
Description of Inputs and Outputs
Top Socket
See item 16 in Fig.2.1.
This 10-pin LEMO connector is the microphone input for the analyzer. Microphone Type 4950
(including Preamplifier ZC-0032) is normally connected directly to this connector. If required,
however, one of two microphone extension cables (AO-0697-D-030, 3 m, or AO-0697-D-100,
10 m), can be fitted between the input stage and the main microphone input socket, to extend
the distance to the desired length.
USB Interface
See item 1 in Fig.2.2 and items 1 and 11 in Fig.2.3.
The USB Interface provides high-speed direct communication via your PC’s USB port to
synchronize measurement and setup data.
–
Hardware versions 1 – 3: Use the supplied Mini USB Cable AO-1476
–
Hardware version 4 (G4): Use the supplied Micro USB Cable AO-1494
Connect to a Printer or External Device via USB
For hardware versions 1 – 3, use the supplied Adaptor AO-0657 to connect to a printer that
supports PCL® language via the USB socket.
For hardware version 4 (G4), use the standard USB Type A socket (item 11 in Fig.2.3) on the
analyzer to connect to printers or other external USB devices.
Earphone Socket
See item 2 in Fig.2.2 and Fig.2.3.
The 3.5 mm minijack earphone socket enables the instrument to be connected to a set of
headphones/earphones, for reviewing recorded comments or for monitoring the measured
sound. Use the optional Earphones HT-0015.
CHAPTER 2
Assembling Your Analyzer
9
External Power
See item 3 in Fig.2.2 and Fig.2.3.
2250 Light is powered by an internal rechargeable battery pack. An indication of available
charge is shown by the battery icon
at the bottom of the screen. If the charge remaining is
low or empty, the batteries can be recharged by connecting Mains Power Supply ZG-0426 or
ZG-0429 to the ‘Ext. Power’ socket. When the power supply lead is connected, the
icon will be displayed in place of the battery icon.
CAUTION:
•
Use specified battery charger only
•
Charging below 0°C (32°F) is not recommended. If you charge the battery pack below 0°C,
the lifetime of the batteries will be reduced
•
Do not charge battery pack at temperatures above 60°C
•
Do not disassemble or expose battery pack to fire or water
Battery Charge Indicator
See item 4 in Fig.2.2 and Fig.2.3.
A battery charge light, (LED), indicates when the battery pack is being charged from external
power.
•
With hardware versions 1 – 3: The LED is a steady green light when external power is
applied (and the battery is charging), and a flashing green light when charging has finished
•
With hardware version 4 (G4): The LED is red when external power is applied (and the
battery is charging); green when the battery is completely charged; and blue to indicate
that the unit is in stand-by and battery powered
Reset Button
See item 5 in Fig.2.2 and Fig.2.3.
Located above the USB connector, it is used to reset 2250 Light if you have problems with the
instrument and cannot get it to operate. To reset, press the button with the point of the stylus.
See Chapter 9 for troubleshooting.
Slot for Compact Flash (CF) Cards
With hardware versions 1 – 3 only (see item 6 in Fig.2.2).
This slot accepts CF sized-cards and can be used for memory, or for example, a modem.
Slot for Secure Digital (SD) Cards
See item 7 in Fig.2.2 and item 6 Fig.2.3.
This slot accepts SD and Secure Digital High Capacity (SDHC) memory cards and is typically
used to save measurement data. Capacities up to 32 gigabytes are acceptable.
Note: Hardware versions 1 – 3 have only one SD card slot. Hardware version 4 has two slots.
10
Hand-held Analyzer 2250 Light – User Manual
Input and Output Sockets
See items 7 and 9 in Fig.2.3.
These sockets are currently not available for use.
Trigger Input Socket
See item 8 in Fig.2.3.
This triaxial LEMO connector is used for the external trigger of signal recordings. If you want
to start and stop the recording using an external device, connect it to this input. See details in
Appendix A.
Note: Signal recording requires a license for the BZ-7226 option.
LAN Socket
With hardware version 4 only – see item 11 in Fig.2.3.
The LAN Socket provides high-speed direct communication with a Local Area Network. It
is used to synchronise measurement and setup data with a host PC. The yellow LED on the
right is on when there is a link. The green LED on the left blinks when there is activity on
the LAN connection.
CHAPTER 2
Assembling Your Analyzer
2.4
Hardware Setup
Fig.2.4
2250 Light – hardware overview
UA-0237
90 mm Windscreen
4231
Sound
Calibrator
4950 Microphone
ZC-0032 Microphone
Preamplifier
AO-0697-D-030
Microphone
Ext. Cable, 3 m
AO-0697-D-100
Microphone
Ext. Cable, 10 m
UA-1317
Microphone
Holder
UA-0801
Small
Tripod
(or UA-0587)
BZ-5298
Environmental
Software CD incl.
Measurement Partner
2250-L
Hand-held Analyzer
QB-0061
Rechargeable
Battery Pack
FB-0691
Hinged Cover
for Hand-held
Analyzer
2250 Light
UA-1651
Tripod
Extension
for Hand-held
Analyzer
USB Interface Cable, 1.8 m
either:
AO-1476 for HW v.1 – 3
or
AO-1494 for HW v.4
Optional Accessories:
UA-1673
Adaptor for
Standard
Tripod Mount
UA-1654
5 extra Styli
DH-0696
Wrist Strap
KE-0440
Travel Bag
for 2250
and
Accessories
UL-1009
Industrial Grade
SD Memory Card
for Hand-held
Analyzer
UA-0587 Tripod
or UA-0801
HT-0015
Earphones
(optional)
KE-0441
Protective
Cover
ZG-0426 or ZG-0429
Mains Power Supply
ZG-0444
Battery
Charger
for QB-0061
060195/6
11
Hand-held Analyzer 2250 Light – User Manual
12
2.5
Assembling 2250 Light
2.5.1
Charging the Battery for the First Time
Battery Pack QB-0061 comes charged to approximately half capacity on initial delivery.
Before using your 2250 Light for the first time, it is recommended that you fully charge the
battery pack, by connecting Mains Power Supply ZG-0426 (or ZG-0429) to the external power
socket. It should take approximately 8 – 10 hours.
The battery charge light shows a steady green light when external power is applied (and the
battery is charging), and a flashing green light when charging has finished. You can leave 2250
Light with external power on, even when the battery is fully charged. Also see section 9.3.3.
2.5.2
Making Good Measurements
The fact that you are using your 2250 Light, which fully complies with the IEC 61672–1
standard, ensures you always make good measurements. 2250 Light should be set up using the
following recommended assembly instructions. This is to minimise the influence of acoustical
reflections during measurements. All the components described below are shown in Fig.2.1
and Fig.2.4.
Another set of instructions is provided in section 2.5.3, for situations where you need to
position the microphone at a distance from 2250 Light, while still complying with the standard.
Placing the Measurement Microphone
The measurement microphone must be placed away from shielding, reflecting, or absorbing
objects. In a diffuse sound field, absorbing objects will reduce the measured sound levels. In
a free sound field, reflecting objects can change the measured sound levels. Typically, the
sound level 0.5 m from a plane reflecting wall is 3 dB higher than if there was no wall.
The operator of the system may be personally shielding, absorbing, and reflecting, and can be
an additional noise source. Measure downwind in dry conditions with a windspeed less than
5 m/s.
The optimum position for the microphone is best found by trying different positions and
observing the resulting sound levels.
Mounting the Measurement Microphone
Before mounting the measurement microphone, note the following precautions:
•
When screwing on the microphone, do it gently to avoid damaging threads
•
Keep dust and foreign matter off the microphone diaphragm. Do not touch the diaphragm
with anything – it is very delicate
Note: Once the measurement microphone and preamplifier have been assembled and
connected to your 2250 Light, they should normally be left connected to the instrument.
CHAPTER 2
Assembling Your Analyzer
13
To Connect:
1) Gently screw Microphone Type 4950 onto Preamplifier ZC-0032 (see items 1 and 2 in
Fig.2.1).
2) Insert the male plug of the preamplifier into the top socket of the Hand-held Analyzer (see
item 17 in Fig.2.1) and push gently until it snaps into position.
To Disconnect:
1) To remove the preamplifier and microphone, grip the locking collar firmly and slide
back, to remove the preamplifier and microphone combination from 2250 Light.
Mounting the Windscreen
For short outdoor noise measurements (or indoor measurements exposed to air movement),
mount Windscreen UA-0237 onto the microphone and preamplifier combination.
Mounting 2250 Light onto the Tripod Extension Stem and Tripod
Mount 2250 Light onto the Tripod Extension Stem UA-1651 and Small Tripod UA-0801, as
follows:
1) Screw Tripod Extension Stem UA-1651 onto the threaded stud of the ball-joint on Small
Tripod UA-0801. Secure the ball-joint in a roughly vertical position (that is, in-line with
the tripod) until ready to follow the instructions in step 4).
2) Screw the Extension Stem UA-1651 into the 2250 Light, using the threaded socket
situated on the underside of 2250 Light, at the back, (see item 18 in Fig.2.1).
3) Set Small Tripod UA-0801 (including 2250 Light) in the required position, and adjust it to
the required height. Ensure that one of the three legs is pointing in roughly the same
direction as your 2250 Light needs to point. (We will refer to this leg as the front leg.)
4) Position the extension stem at an angle of 45° to the horizontal and vertically in-line with
the front leg of the tripod – this is to ensure the whole setup is stable.
Note: The procedure is the same if Tripod UA-0587 is used instead of Small Tripod UA-0801.
Once you have carried out these instructions, you are ready to start measuring, see Chapter 3.
2.5.3
Alternative Measurement Method (Extended Microphone)
The measurement microphone can be placed a distance from 2250 Light by connecting an
extension cable and fitting the microphone to a microphone holder. 2250 Light should be set up
using the following assembly instructions. This is to ensure that the accessories have limited
acoustical influence on the instrument during measurement. All the components described
below are shown in Fig.2.1 and Fig.2.4.
Hand-held Analyzer 2250 Light – User Manual
14
Connecting a Microphone Extension Cable
There are two optionally available extension cables which are recommended for use with
2250 Light. These are:
•
AO-0697-D-030: 3 m long
•
AO-0697-D-100: 10 m long
Note: Connecting a recommended microphone extension cable has no appreciable effect on the
Hand-held Analyzer’s measurement and has no effect on the instrument’s calibration.
However, although it is not essential to re-calibrate, it is good measurement practice to calibrate
the whole measurement chain (including microphone extension cable) before starting a
measurement.
Decide which cable you require and assemble as follows:
1) Gently screw Microphone Type 4950 onto Preamplifier ZC-0032 (see items 1 and 2 in
Fig.2.1).
2) Insert the preamplifier into the female plug of the extension cable and push gently until it
snaps into position.
3) Insert the male plug of the extension cable into the top socket of the Hand-held Analyzer (see
item 17 in Fig.2.1) and push gently until it snaps into position.
Mounting the Measurement Microphone on the Microphone Holder and Tripod
Mount the microphone and preamplifier combination onto Microphone Holder UA-1317 and
Small Tripod UA-0801, as follows:
1) Set Small Tripod UA-0801 in the required position, and adjust to the required height.
2) Screw Microphone Holder UA-1317 onto the threaded stud on the tripod ball-joint, and
position the holder as required.
3) Push the microphone and preamplifier combination carefully into the microphone holder, so
that it grips onto the body of the microphone and preamplifier. Ensure that the microphone
lead sits properly in the plastic guide.
Once you have carried out these instructions, you are ready to start measuring, see Chapter 3.
2.5.4
Measuring for Convenience
Measurements that need to be done at short notice, with no particular accuracy can be carried
out by simply holding the instrument or using any combination of hardware components and
accessories shown in Fig.2.4.
15
Chapter 3
Making Your First Measurement
3.1
Introduction
This chapter describes how to make a basic measurement and how to save and document the
results. It assumes you have just received your analyzer and are turning it on for the first time.
Note: A stylus is stored in a holder on the side of the instrument, see item 15 in Fig.2.1. This
can be used on the touch-sensitive screen to select icons and functions during the procedures
that follow. Alternatively, you can use the various pushbuttons, see items 3 to 11 in Fig.2.1.
The following procedures assume that the measurement microphone and preamplifier have
been mounted as described in Chapter 2 and the analyzer has a fully charged battery, see
section 2.5.1.
3.2
Point and Shoot
Using the following basic procedure you will be able to start using your hand-held analyzer
immediately to make measurements and start the familiarisation process:
1) Switch on by pressing
and make sure the Sound Level Meter project template is
selected (see section 3.3.3 for instructions).
2) Check that the data path at the top of the screen displays the correct job/project, (that is,
where you want to save the new data). See section 6.1.1.
3) Set Measurement Mode to Manual and change any setup parameters by tapping the Main
Menu icon
and selecting Setup from the drop-down that appears.
4) Press the Start/Pause pushbutton
, then monitor the status indicator (traffic light).
5) Use the Start/Pause
the measurement.
, Back-erase
, Continue
and Reset
pushbuttons to control
Hand-held Analyzer 2250 Light – User Manual
16
6) When measurement has finished, press the Save
pushbutton to save your data.
7) To view and organise your data, tap the Main Menu icon
and select Explorer.
Note: You are not required to set any measurement ranges, the analyzer has a dynamic range of
more than 120 dB, from 140 dB down to the noise floor of the microphone, (if the microphone
has nominal sensitivity).
3.2.1
Congratulations!
You should now be familiar with the basic principles of the analyzer. If you need more help, the
following section goes into the measurement process in more detail. If not, please refer to
Chapter 4.
3.3
Making a Measurement
3.3.1
What is a Project Template?
A project template contains all the common display settings and measurement setups required
to perform a noise measurement. The template does not contain any measurement data – these
data are saved as individual projects, stored in job folders, see section 6.1.1. The project
templates covered by this manual, are:
•
Sound Level Meter Project Template (included in BZ-7130 software)
•
1/1-octave Frequency Analysis Project Template (included in BZ-7131 software)
•
1/3-octave Frequency Analysis Project Template (included in BZ-7132 software)
•
Logging Project Template (included in BZ-7133 software)
Note 1: Signal Recording Option BZ-7226 does not contain a specific template – signal
recording options are available in all templates.
Note 2: Tone Assessment Option BZ-7231 does not contain a specific template – tone
assessment options are available in all templates included with BZ-7132/33.
If you make any changes to the settings in a Project Template, an ‘*’ will appear next to the
template name to indicate that the new settings have not been saved. Select Save Template from
the Main Menu
to save the settings in the current template.
CHAPTER 3
Making Your First Measurement
3.3.2
Switching On
Switch the analyzer on by pressing . The start-up time depends on the state the analyzer was
in when last switched off and it may take up to 2 minutes from a cold start, or up to 10 seconds
if the instrument is already in Standby Mode (that is, from a warm start).
Note: A cold start is a re-boot of the analyzer from ROM. This normally occurs after the
analyzer has been turned off for some time, either by the user or following an automatic powerdown. A warm start takes the analyzer quickly from Standby mode to fully operational without
having to re-boot. (The battery needs to be charged for this to happen, see section 2.5.1.)
3.3.3
Set the Sound Level Meter Project Template
After initialization, the screen shown in Fig.3.1 appears:
Fig.3.1
Initial sound level meter
screen
1) Check that the SOUND LEVEL METER project template is displayed at the top of the
screen, see Fig.3.1. If not, use the stylus to tap on the bar at the top of the screen to reveal
a drop-down list and select SOUND LEVEL METER from the list (Fig.3.2).
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Hand-held Analyzer 2250 Light – User Manual
Fig.3.2
Changing the
project template
2) Tap on Measurement Mode in the view area and set to Manual (Fig.3.3).
Note: The bar graph showing the sound pressure level LAF is now live. This is because
LAF is an instantaneous value, always available for display. Other parameters, such as
LAeq is a measured value that needs to be averaged over a period of time and cannot be
displayed before you have started a measurement using the Start/Pause pushbutton .
Fig.3.3
Setting the
measurement mode
3) Press the Start/Pause pushbutton
to start the measurement.
Note: Start briefly appears on the screen as feedback when you press the Start/Pause
pushbutton.
Notice the Running icon
on the screen and monitor the red, yellow, green status
indicators around the Start/Pause pushbutton while you are measuring.
CHAPTER 3
Making Your First Measurement
The indications should be as follows:
•
Yellow status indicator flashing every 5 s before starting the measurement
•
Steady green status indicator after pressing the Start/Pause pushbutton
the measurement (if everything is OK)
•
Yellow status indicator flashing every 5 s when you have stopped, saved the
measurement and are ready to do another measurement
•
Yellow status indicator flashing slowly, 0.5 s on, 0.5 s off, if you pause the measurement
•
Red status indicator flashing rapidly if you encounter an overload condition during the
measurement
and during
4) Use the Start/Pause
, Continue
, Back-erase
and Reset
pushbuttons to
control the measurement. The status field at the top of the screen will give short textual
feedback on the pushbutton operation. A visual indication of measurement status is also
displayed on the status line, by way of the Stopped icon , the Running icon
and the
Paused icon
(Fig.3.4).
Fig.3.4
Measurement
feedback in the
status field
5) Toggle between different display parameters, as required, by tapping on each parameter
field (for example LAF90.0 in Fig.3.4) with the stylus and selecting other parameters from
the drop-down lists that appear.
Note: The tabs at the bottom of the screen allow you to choose different ways of
displaying the measurement results:
•
The Broadband view shows an instantaneous LAF readout, with associated bar graph
and four measurement parameters, followed by two measurement setup parameters.
(The first parameter is displayed in a larger font size for better readability (Fig.3.4.))
•
The XL View increases the size of the first parameter readout to a four-digit, fullscreen display (including decimal point)
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Hand-held Analyzer 2250 Light – User Manual
6) Set Measurement Mode to Automatic and choose a preset time for your measurement.
Then repeat steps 3 and 4. The measurement will automatically pause after the preset time.
This allows you to either save your measurement or continue measuring, as required.
7) Tap the Main Menu icon
and select Setup from the list of options (Fig.3.5).
Fig.3.5
Main Menu options
Change the broadband weighting parameters by tapping on the ‘plus’ icon
next to
Frequency Settings, then on the weighting parameter field on the right side of the screen. A
weighting drop-down menu will appear (Fig.3.6). Change the parameters as required.
Fig.3.6
Changing the broadband
frequency settings
8) Return to the bar graph screen of the SOUND LEVEL METER template, by tapping
and you are ready to make a new measurement.
CHAPTER 3
Making Your First Measurement
3.4
Save your Measurement
When you have completed your measurement, you need to save it. By default, 2250 Light
creates a job folder called JOB 01. Job folders represent the upper level of the data (or file)
management system, with individual measurements or sets of data, represented by projects
appearing under the relevant job. By default 2250 Light also creates a project called
PROJECT 001 under JOB 01. (Subsequent measurements will be labelled PROJECT 002,
PROJECT 003, etc., under JOB 01. This will happen each time you have saved a
measurement.)
Check that the data path at the top of the screen displays \JOB 01\PROJECT 001* and save your
measurement by pressing the Save pushbutton . For more details refer to section 6.1.
Note: An asterisk will appear alongside the project at the top of the status field as soon as you
start your measurement, see Fig.3.7. This signifies that the measurement has not been saved. It
will disappear once you have saved the measurement.
Fig.3.7
Saving your
measurement
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Hand-held Analyzer 2250 Light – User Manual
22
3.4.1
Viewing the Saved Measurement
To view the saved measurement, tap the project name or the Main Menu icon
and select
Explorer from the list of options. Tap the name of your measurement (PROJECT 002 in this
case) and select Open from the drop-down that appears (Fig.3.8). Alternatively, you simply tap
the measurement icon to the left of the name to open and view.
Fig.3.8
Viewing your
measurement in Explorer
3.5
Documenting your Measurement
You can attach a note with the GPS position (requires a GPS receiver connected to the USB
socket). Adding a GPS note can be done before, during or after saving the measurement by
tapping the Main Menu icon
and tapping Add GPS Note to Cur. Measurement in the list
of options.
If a GPS receiver is connected (via USB) when you press the Save pushbutton
, then the
GPS note is automatically created with the position. Remove the GPS receiver after usage to
save power.
Tap the paperclip , icon to see the GPS annotation in the project and tap the text icon in the
annotation to view the GPS coordinates.
CHAPTER 3
Making Your First Measurement
Fig.3.9
Example of a GPS note
If you do not have a GPS receiver, but know the position (for example, from your smartphone),
you can manually key in the position in the GPS note.
The GPS note is headlined “Position:”, and includes the latitude and longitude. For manual
entries, please enter the latitude and longitude in one of the following formats :
Degrees: DD.ddddddY DD.ddddddX
Example: 55.816730N 12.532855E
Degrees Minutes: DD MM.mmmmY DD MM.mmmmX
Example: 55 49.0038N 12 31.9713E
Degrees Minutes Seconds: DD MM SS.sssY DD MM SS.sssX
Example: 55 49 0.288N 12 31 58.278E
where X = E or W and Y = N or S. If you use degrees only, then you can use +/– instead of N/S
and E/W (example: 43.08011N,79.071007W = 43.08011,–79.071007). You can use “,” instead
of “space” between latitude and longitude
The GPS note can be used by Measurement Partner Suite BZ-5503 to locate the measurement
on Google Maps™.
3.6
Switching Off
Switch the analyzer off by pressing
. If held in for 1 second, the instrument goes into
standby mode; if held in for more than 4 seconds, it switches the instrument off.
The analyzer will automatically switch off when it has been in standby mode without external
power for more than 30 hours.
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Hand-held Analyzer 2250 Light – User Manual
25
Chapter 4
Getting to Know Your Analyzer
4.1
What is a Sound Level Meter?
A Sound Level Meter (SLM) is an instrument that is designed to measure sound levels in a
standardised way. An SLM comprises a microphone, a preamplifier, a main processor and a readout unit. The microphone converts the sound signal into an equivalent electric signal. The
electric signal that the microphone creates is at a very low level, so it is made stronger with the
help of a preamplifier before it is processed by the main processor.
Processing includes applying frequency and time weightings to the signal as specified by
international standards, such as IEC 61672–1, to which the analyzer conforms.
Frequency weighting adjusts how the SLM responds to different sound frequencies. This is
necessary because the human ear’s sensitivity to sound varies according to the sound’s
frequency. The most commonly used frequency weighting is A-weighting, which adjusts a
signal in a way that best resembles the human ear’s response at medium-range levels.
A-weighting is required for nearly all environmental and workplace noise measurements, and
is specified in international and national standards and guidelines. All of the analyzer’s
measurement parameters apply A- or B-weighting and a choice of C- or Z-weighting, except
for the measurement of peak levels where a single weighting (typically ‘C’) is applied. In this
case, C-weighting is used to take into account the energy present at low frequencies even when
they are not particularly annoying.
Time weighting specifies how the SLM reacts to changes in sound pressure. It is an exponential
averaging of the fluctuating signal, providing an easy-to-read value. The analyzer applies Fast,
Slow and Impulse (or ‘F’, ‘S’ and ‘I’) time weightings, which are the required weightings
according to the vast majority of international and national standards and guidelines.
The signal is processed through the weighting filters, and the resulting sound pressure level is
displayed in decibels (dB) referenced to 20 µPa on the analyzer’s screen. The sound pressure
level values are updated at least once per second.
Assessing a fluctuating noise level means getting a value for a level that is, in simple terms, the
average level. The ‘equivalent continuous sound level’, Leq, is known around the world as the
essential averaged parameter. Leq is the level that, had it been a steady level during the
measurement period, would represent the amount of energy present in the measured,
Hand-held Analyzer 2250 Light – User Manual
26
fluctuating sound pressure level. It is a measure of the averaged energy in a varying sound
level. It is not a direct measure of annoyance, though extensive research has shown that Leq
correlates well with annoyance.
Leq is measured directly with any SLM. If an A-weighting filter is used, it is expressed as LAeq:
the measurement of the equivalent continuous sound level using the A-weighted filter network.
A full range of measurement parameters is given in Appendix B.
4.2
What is the Hand-held Analyzer?
The hand-held analyzer is a versatile hardware platform suitable for covering a wide range of
different applications. Together with Sound Level Meter Software for 2250 Light BZ-7130, it
is a Class 1 modular precision integrating-averaging sound level analyzer with an easy to use
interface for quick and simple measurement setups.
4.2.1
Sound Level Meter Software for 2250 Light BZ-7130
Sound Level Meter Software for 2250 Light, BZ-7130 allows you to measure a comprehensive
set of parameters used for rating noise in terms of its impact on the environmental and working
environments and on occupational noise evaluation.
The more commonly used parameters, which cover a large range of applications, are either
instantaneous measured parameters (available at any time) or timed measured parameters
(measured within a controlled time interval):
Timed Measured Parameters
•
Equivalent Continuous Sound Levels (Leq – example: LAeq)
•
Moving (or sliding) Equivalent Continuous Sound Levels (example: LAeq,T,mov and
LAeq,T,mov,max)
•
Peak Sound Levels (Lpeak – example: LCpeak)
•
Maximum Time-weighted Sound Levels (Lmax – example: LAFmax)
•
Minimum Time-weighted Sound Levels (Lmin – example: LAFmin)
•
Percentile Levels (LN – example: LAF90.0)
•
Sound Exposure Level (LAE)
•
Sound Exposure (example: E)
•
Daily Noise Exposure Level (example: Lep,d or LEX,8h)
•
Noise Dose (example: based on ISO standards: Dose; based on US standards: DoseS5)
•
Number of Peaks (for example, #CPeaks(>140 dB))
•
Time Weighted Average (for example, TWA)
•
Level Average with Exchange Rates 4, 5 or 6 (example: LavS5)
•
Weather data (requires a weather station connected)
•
GPS data (requires a GPS device connected)
CHAPTER 4
Getting to Know Your Analyzer
Instantaneous Measured Parameters
•
Instantaneous Time-weighted Sound Levels (Lp – example: LAF)
•
Sound Pressure Levels (max levels once per second – example: LAF(SPL))
•
Instantaneous Peak Sound Levels (example: LCpeak,1s)
•
Instantaneous Weather data (requires a weather station connected)
•
Instantaneous GPS data (requires a GPS device connected)
Note: See Appendix B for a comprehensive list of all parameters.
Sound Level Meter Software for 2250 Light BZ-7130 incorporates a simple user interface that
is easy to learn and uses intuitive data storage and recall. Comprehensive security features
mean no loss of data, even on accidental power-off. Sound Level Meter Software for 2250
Light BZ-7130 also provides connectivity between your PC and other sound analysis software.
This hand-held analyzer platform includes a range of optional software modules, that are
enabled through easily activated software license keys. The combination of software modules
and innovative hardware makes the instrument a dedicated solution for performing all your
high-precision measurement tasks. The following optional software modules are covered in this
manual:
4.2.2
Frequency Analysis Software
1/1-octave Frequency Analysis Software for 2250 Light BZ-7131
This software module allows real-time frequency measurements in 1/1-octave bands, making it
a simple matter to, for example, select suitable hearing protection, qualify noise from heat and
ventilation systems and assess tonality.
1/3-octave Frequency Analysis Software for 2250 Light BZ-7132
This software module allows real-time frequency measurements in 1/3-octave bands.
4.2.3
Logging Software for 2250 Light BZ-7133
This software module allows logging of broadband and spectral data* to obtain a time history
for later analysis, for example, for use in environmental noise as well as workplace noise
assessment. It allows free selection of up to 10 parameters to log at periods from 1 s to 24 h.
Results are logged directly to the SD memory card (or CF card if using hardware
versions 1 – 3).
*.
Requires 1/1-octave Frequency Analysis Software for 2250 Light BZ-7131 or 1/3-octave Frequency
Analysis Software for 2250 Light BZ-7132
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Hand-held Analyzer 2250 Light – User Manual
28
4.2.4
Signal Recording Option BZ-7226
This option allows recording of the input signal (typically sound) in either 16-bit or 24-bit
resolution during measurement. The signal recording can be controlled manually or by using
an external trigger signal. The recorded signal can be played back and listened to (hardware
version 4 only) using optional Earphones HT-0015. The signal is recorded directly to the SD
memory cards (or CF card if using hardware versions 1 – 3).
4.2.5
Tone Assessment Option BZ-7231
This option allows the assessment of tones on-site, according to the ISO standard. When used
with 1/3-octave Frequency Analysis Software BZ-7132 and Logging Software BZ-7133, it
allows you to assess tones in a measured 1/3-octave spectrum according to ISO 1996:2007,
Annex D.
4.2.6
Built-in Help
If you need more detailed information at any time during operation, tap the Help icon
on
the analyzer’s screen. The resulting screen will explain that particular item in much more
detail. You can scroll up and down the explanatory text using either the
and
pushbuttons, or the scroll bar
on the screen. Return to the normal display screen by
tapping .
If you need to view any of the previous 10 screens you have visited in the help system, tap the
icon at the top of the display.
Software and Hardware Versions
Once in the help system, you can access the list of installed software versions and licenses,
together with information about the hardware. This information is always available and is
accessed by selecting About from the top of the display.
CHAPTER 4
Getting to Know Your Analyzer
4.3
What is Measurement Partner Suite BZ-5503?
Measurement Partner Suite BZ-5503 comes standard with your hand-held analyzer and
provides data archive, preview and export capabilities as well as software maintenance and
remote online display. In addition to the included standard configuration, valuable data analysis
and postprocessing functionality is available in an expanding suite of optional application
modules.
The software enables you to do the following:
•
Setup or control the analyzer from a PC
•
Retrieve data from the analyzer
•
Manage and archive data from the analyzer
•
View data in archives
•
Update the software in the analyzer
•
Install licenses for use of software modules in the analyzer
•
Remotely view online displays
•
Post-process data (optional)
•
Export to other post-processing and documentation tools like Evaluator™ Type 7820 or
Microsoft® Excel® or Word
Measurement Partner Suite BZ-5503 is supplied on the Environmental Software DVD
(BZ-5298), which is included with your analyzer.
4.4
Basic Principles when using 2250 Light
4.4.1
Navigation Principles – ‘Star’ Navigation Concept
The main principle is that all the main menus are accessible via a single tap of the stylus. The
Main Menu icon
forms the centre of the ‘star’ navigation concept, see Fig.4.1:
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Hand-held Analyzer 2250 Light – User Manual
30
Fig.4.1
The ‘Star’ navigation concept
CHAPTER 4
Getting to Know Your Analyzer
This configuration gives you immediate access to screens you need most, that is, those you will
need to perform, save and document your measurements. The Main Menu
allows you to
navigate to the following screens:
•
Explorer
•
Setup
•
Preferences
•
Transducers
•
Calibration
•
Timer Setup
In addition, the Main Menu
•
Save Template
•
Lock Keys and Screen
also allows you to perform the following actions:
Explorer
The Explorer screen is accessed from the Main Menu
or by tapping the project name and
gives you access to the analyzer’s Data/Project manager. This allows you to view the overall
project structure, including job folders and projects, and to view all the individual
measurements. When you have finished, press
to return to the measurement screen.
Setup
The Setup screen is accessed from the Main Menu
and gives you access to the various
setup parameters, such as frequency weightings, control of the measurement, bandwidth,
statistics and the type of input currently connected. You can change these as required, see
section 4.4.6.
The Full tab at the bottom of the screen allows you to view the complete list of setup
parameters, while the Quick tab allows you to access the more frequently used parameters.
When you have finished viewing or updating the parameters, tap
to return to the
measurement screen.
Changes made to the setup will only be applied temporarily, i.e., until you select another
project template or open another project to re-use the setup from that project. However, if you
want the setup changes to be saved in the current template, select the Save Template option
from the Main Menu
.
Note: If you make changes to the setup that you do not want to keep (and you have not yet
selected Save Template), you can undo them by selecting the template again from the Project
Template bar at the top of the screen.
Preferences
The Preferences screen is accessed from the Main Menu
and gives you access to the
instrument’s preferences. These include things such as regional settings, appearance of the
screen, power management and language. You can change these as required, see section 4.4.6.
For more information refer to section 8.1. When you have finished viewing or updating the
parameters, tap
to return to the measurement screen.
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Hand-held Analyzer 2250 Light – User Manual
32
Transducers
The Transducers screen is accessed from the Main Menu, you can view details of the
transducer connected to the instrument. Details can be changed, see section 4.4.6. When you
have finished viewing or updating the details, tap
to return to the measurement screen.
You can tap on the Calibration History link at the bottom of the transducer details and open the
Calibration History screen, see Fig.4.1. This screen includes the calibration history for the
microphone. When you have finished viewing or updating the details, tap
to return to the
Transducers screen.
Calibration
The Calibration screen is accessed from the Main Menu, and gives you access to the
instrument’s calibration procedure. To calibrate the instrument, follow the instructions in the
status field. For more information refer to section 5.2. When you have finished calibrating or
viewing the details, tap
to return to the measurement screen.
The Calibration tab at the bottom of the calibration screen allows you to perform and monitor
the calibration, while the Details tab allows you to view the details of the calibration and the
calibrator that are being used to calibrate the analyzer. While you are viewing the Details tab,
you can tap on the Calibration History link at the bottom of the calibration details and open the
Calibration History screen (Fig.4.1). This screen includes the calibration history for the
currently selected transducer, tap
to return to the Calibration screen.
Timer Setup
The Timer Setup is accessed from the Main Menu and enables you to control the analyzer via
one or more of the analyzer's timers. The purpose of a timer is to initiate measurements in the
absence of an operator. When you have finished, tap to return to the measurement screen.
4.4.2
The Display Screen
During normal operation, you will use the display screen to view your measurements and carry
out a variety of functions, which are described in the following sections.
CAUTION: The touch-sensitive screen is susceptible to damage from sharp objects, such as
pencils, fingernails, etc. We therefore recommend you use the stylus provided to activate items
on screen. See also section 4.4.5.
A typical screen is shown in Fig.4.2.
CHAPTER 4
Getting to Know Your Analyzer
Fig.4.2
Project Template
Typical screen when
making a measurement
Status field
View area
View tabs
Shortcut bar with icons
The main areas, starting at the top of the screen, are:
•
Project Template
•
Status Field
•
View Area (with view tabs)
•
Shortcut Bar
Project Template Bar
This bar displays the name of the Project Template, which contains all the screen settings and
measurement setup for the current project. Tap on the text to open a drop-down list containing
all the available templates. If you make any changes to the setup in a template an ‘*’ will
appear next to the template name to indicate that the new settings have not been saved. Select
Save Template from the Main Menu
to save the settings in the current template.
Status Field
The area just below the Project Template bar is called the Status Field. Depending on the
template, this field displays status information using up to three lines of text, as follows:
First Line:
•
Path and name of the current project (see section 6.1.1). Tap it to open the Explorer. To
change the path, navigate to the desired job (path) and tap the
icon to save this path as
the default measurement path. As in the project template, an ‘*’ will appear next to the
project name to indicate that the project has not been saved. Press the Save pushbutton
if you want to save the measurement or changed settings.
•
Smiley (if applicable)
•
The PC icon
indicates connection to a PC
33
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Hand-held Analyzer 2250 Light – User Manual
Second Line:
•
Measurement state represented as icons: Stopped
, Running
and the Paused icon
•
Elapsed time of the measurement
•
Feedback on the action of pressing the following pushbuttons: Reset
Start/Pause
and Save
•
Indication that the measurement microphone is not calibrated. In this case the word Uncal.
appears in the Status Field
•
Four icons are used to represent whether, or not, a windscreen is fitted and whether you are
measuring in a free-field or diffuse field. For example, no windscreen fitted, measuring in
a free-field – ; no windscreen fitted, measuring in a diffuse field – ; windscreen fitted,
measuring in a free-field –
; windscreen fitted, measuring in a diffuse field –
•
Immediate textual feedback on overload/underrange situation and latched overload indicated with an Overload icon
, Back-erase
,
Third Line: Used for Logging. See “Status Field” on page 101.
View Area
The View Area contains the screens required for a particular measurement, such as bar graphs,
result readouts and various frequently used setup parameters (that is, Meas. mode). The
template defines the content of this area. More than one screen can be used for displaying the
information. Select the screen using the View Tabs at the bottom of the View area.
Changes made to the screens will only be applied temporarily, that is, until you select another
project template or open another project to re-use the screen from that project. However, if you
want the screen changes to be saved in the current template, select the Save Template option
from the Main Menu
.
Note: If you make changes to the screen that you do not want to keep (and you have not yet
selected Save Template), you can undo them by selecting the template again from the Project
Template bar at the top of the screen.
Shortcut Bar
The Shortcut Bar, at the bottom of the screen, displays a number of fixed icons that are always
accessible. These include:
•
Main Menu icon
, gives access to the Main Menu. This allows you to navigate to a
specific function, see description earlier under Navigation Principles
•
Backlight icon
•
Help icon , a quick way to get context-sensitive help from any screen by tapping on the
icon at the bottom. Closing the help window will return you to the previous screen
, allows you to select a backlight level
•
Battery/power Status icon
, shows the condition of the battery. All green shows a
fully charged battery, while red means power levels are low. Tap the icon to get more
details of the battery condition. (When the Power Supply lead is connected, the
icon will be displayed in place of the Battery/power Status icon
.)
•
The clock in the lower right corner displays the current time. Tap the readout to get details
of the time and date, or to set the clock
CHAPTER 4
Getting to Know Your Analyzer
4.4.3
Use of Pushbuttons for Controlling Measurements
The design of the analyzer is such that the layout of the pushbuttons has been optimised for
single-handed operation.
Reset Pushbutton
Use the Reset pushbutton
to reset a measurement, i.e., to reset all detectors, averagers,
maximum and minimum hold, etc. If the measurement is paused (that is, Paused icon
is
displayed in the status field), then the measurement reverts to a ‘stopped’ state after a reset,
displayed with a zeroed readout). If the measurement is running, then
(that is, Stopped icon
the measurement will be automatically re-started after the reset.
Start/Pause Pushbutton
Use the Start/Pause pushbutton
for controlling the measurement. The function of this key
depends on the current measurement state, see Table 4.1.
Table 4.1
Start/Pause pushbutton functions
Current
Measurement
State
Function of
Start/Pause Pushbutton
Next Measurement
State
Stopped
Start the measurement
Running
Running
Pause the measurement
Paused
Paused
Continue the measurement
Running
Save Pushbutton
Use the Save pushbutton
to save the measurement data together with the current project
template (including all the screen settings and setup information) and the calibration
documentation.
Pressing Save will affect the pause and running states. In both cases the measurement state will
displayed).
be ‘stopped’ shortly after pressing the pushbutton (Stopped icon
Back-erase Pushbutton
For BZ-7130, BZ-7131 and BZ-7132 Software:
Use the Back-erase pushbutton
to erase the last 5 seconds completely from the measurement.
(This includes, of course, overload indications you would like to erase.)
If used when the current measurement is running, then the measurement will be paused. The
status field displays Pause, Back erase briefly, and then displays the shortened elapsed time
along with the Paused icon .
For BZ-7133 Software:
Pressing the Back-erase pushbutton
will start drawing an Exclude Marker on the display, see
section 11.3.2. Pressing it again will stop drawing the marker on the display (toggle function).
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4.4.4
On-screen Feedback and Traffic Light
Feedback is given on screen in the Status Field, see Fig.4.2, and the Traffic Light indicates
important states of the instrument, see Table 4.2:
Table 4.2
Traffic Light Indications
State
During power-on or loading template
Stopped. Ready to measure
4.4.5
Light Scheme
Nothing
Short yellow flash every 5 s
Awaiting trigger, searching for
calibration signal
Short green flash every second
Running measurement,
everything OK
Steady green light
Paused. Measurement not saved
Slow yellow flash on 1/2 s, off
1/2 s
Overload
Fast red flash
Use of Stylus and Navigation Pushbuttons
The stylus and navigation pushbuttons are used for setting up 2250 Light, navigating through
the screens and managing the results.
A number of items that appear on the screen (parameter values or icons) can be selected,
updated and activated. For instance, a new parameter value can be selected from a drop-down
list.
The selection and activation of items on the screen can be done in two ways:
•
Tapping once on the item on the screen will select and activate it, or
•
Moving the field selector around using the navigation keys until the item you want is
highlighted, then pressing the Accept pushbutton
to activate it
You can choose to use the stylus or the pushbuttons, depending on your preference and the
measurement situation. For instance, if the amount of noise generated by the instrument needs
to be kept to an absolute minimum, consider using the pushbuttons rather than the stylus – this
is because tapping of the stylus on the touch-sensitive screen may create extra noise. However,
if speed is of major importance, the stylus can navigate through the setup and measurement
screens quicker.
Throughout the manual we have described how to perform the measurement procedures using
the stylus only, but you may also use the alternative method (using the Navigation and Accept
pushbuttons) if you prefer.
4.4.6
How to Change Parameter Values
Most parameter values are changed by selecting a new value from a drop-down list, which
appears when the parameter field is selected. See the example in Fig.4.3.
CHAPTER 4
Getting to Know Your Analyzer
Fig.4.3
Changing parameter
values
Stylus Usage
Tap on the value you want in the drop-down, or tap outside the list to cancel the selection.
Pushbutton Usage
Use the navigation pushbuttons (Up Arrow , or Down Arrow ) to select the value you
want and press the Accept pushbutton
to activate it. Use the Left Arrow
to cancel the
selection.
Number Keyboard
When activating a number, a number keyboard appears, see Fig.4.4.
Fig.4.4
Number keyboard
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38
Tap on the digits or use Up Arrow /Down Arrow
to increment/decrement the number.
Use Left Arrow
/Right Arrow
to select other digits if necessary. Press the Accept
on the number keyboard to enter the number for the parameter. Tap
pushbutton
or tap
on the number keyboard, or outside the number keyboard to cancel the change of value.
Character Keyboard
When activating a text value, a standard full character keyboard appears on the screen (Fig.4.5).
Fig.4.5
Character keyboard
The character keyboard has all the functionality of a normal keyboard, enter text as required by
to accept the changes, or tap outside the
tapping the individual keys with the stylus. Tap the
keyboard to cancel.
You can lock your settings, to prevent accidental changes, by tapping on the padlock icon
on top of the screen. To unlock tap on the padlock icon again.
When locking the template you get the option of password protecting the lock. If you choose
this, then you enter a password.
4.4.7
Locking the Pushbuttons and Display
The pushbuttons and display can be locked to prevent inadvertent operation:
•
To Lock: Select the Lock Keys and Screen option from the Main Menu
•
To Unlock: Press the Left Arrow pushbutton , followed by the Right Arrow
pushbutton , then the Accept pushbutton
.
.
If you attempt to press a pushbutton, or tap the screen, while the analyzer is locked, an
information window pops up with instructions on how to unlock it.
39
Chapter 5
Calibration
5.1
Introduction
Calibration is an adjustment of your sound level meter to measure and display correct values.
The sensitivity of the microphone as well as the response of the electronic circuitry can vary
slightly over time, or could be affected by environmental conditions such as temperature and
humidity. While you are unlikely to ever experience a large drift or change in sensitivity with
the analyzer, it is nevertheless good practice to perform regular calibrations, normally before
and after each set of measurements. Often calibration is required by measurement standards,
such as IEC 61672–1.
If you want your analyzer to remind you when the next Accredited/Traceable calibration is due,
you can set it up on the Reminder tab of the Calibration screen. See section 5.6.
You can check the complete measurement chain during long-term measurement using Charge
Injection Calibration. See section 5.7.
5.2
Calibration Types
Acoustic Calibration
Acoustic calibration is the preferred calibration method, particularly when standards and
regulations require calibration before a measurement. The method involves applying an
acoustic signal of known magnitude and frequency to the microphone, which calibrates all the
instrument’s components (microphone, preamplifier and electrical circuitry).
Electrical Calibration
If no sound level calibrator is available (or a known amplification is introduced, i.e., by
analyzing a tape recorded signal) then you can type the sensitivity directly into the Sensitivity
field. The analyzer will be regarded as uncalibrated, and the text ‘Uncal.’ will appear in the
status field.
Hand-held Analyzer 2250 Light – User Manual
40
Manual Calibration
If no calibrator is available (or a known amplification is introduced, e.g., by analysing a tape
recorded signal) then you can type the sensitivity directly into the Sensitivity field. The
analyzer will be regarded as uncalibrated and the text ‘Uncal.’ will appear in the status field.
Charge Injection Calibration
You can check the complete measurement chain during long term measurement using Charge
Injection Calibration. See section 5.7.
5.3
Standard Calibration
To perform the acoustic calibration use Sound Calibrator Type 4231. It provides a stable sound
pressure at 1 kHz and has minimal susceptibility to environmental factors. The procedure itself is
relatively simple, and on the analyzer the procedure is referred to as the Standard Calibration
procedure.
The procedure for performing an acoustic calibration and instructions on how to fit the
calibrator are given below:
1) Stand away from loud sound sources that may interfere with the calibrator’s signal.
2) Switch on the analyzer: push
3) Tap the Main Menu icon
.
then Calibration to open the Calibration screen (Fig.5.1).
Fig.5.1
Calibration screen
This screen contains a bar graph showing the actual sound pressure level and three
placeholders for displaying information about the last calibration.
4) Following the first part of the instruction in the Status Field, fit Sound Calibrator
Type 4231 carefully onto the microphone of the analyzer. (To avoid handling vibrations
CHAPTER 5
Calibration
that disturb the calibration, rest the assembly in a roughly horizontal position on a table or
other flat surface.)
Ensure that the calibrator fits snugly on the microphone.
5) Switch on the calibrator. Wait a few seconds the level to stabilise.
6) Tap the
button on the screen to start the calibration.
Note: Detecting level... appears on the screen as feedback.
7) While the analyzer is searching for the calibration signal and the signal level is stabilising,
the ‘traffic light’ indicates a short green flash every second. When the level is stable, the
traffic light indicates a steady green and the signal is measured and used for calibration. Once
the calibration has been completed successfully, the traffic light indicates a short
yellow flash every 5 seconds. The Sensitivity is automatically calculated and displayed in
a pop-up together with the deviation from the last calibration. Tap Yes to accept and use the
new sensitivity and save it in the calibration history. Tap No to disregard the new
calibration and continue with the old calibration.
If the calibration deviates more than  1.5 dB from the initial calibration, then the
calibration is stopped without changing the calibration of the instrument. The traffic light
will indicate a fast flashing red and an error description will appear in the status field.
Hint: If the microphone is separated from the analyzer using a microphone extension
cable then place the analyzer so it can be seen from the location of the microphone. Start
the calibration process, (select the Calibration screen and tap the
button on
the screen, then go to the microphone and fit the Calibrator onto the microphone, switch
on the calibrator and monitor the traffic light on the analyzer, as discussed previously.
8) Once you have completed the calibration, tap the
calibrator. It will automatically switch off after a few seconds.
5.3.1
button and remove the
Calibration Settings
Select the Details tab on the Calibration screen to view the calibration details, see Fig.5.2.
Fig.5.2
Calibration details
screen
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42
This screen displays the following information:
•
Details of the last calibration: date, sensitivity, deviation from last calibration and deviation
from initial calibration
•
The connected transducer: type and serial number
Note: Select a new transducer by tapping on the Main Menu icon
followed by Input)
and selecting Setup,
•
A Calibration History link: provided to enable you to view a history of transducer and
calibration settings, see below
•
Max. Input Level: the maximum sinusoidal input level measured without overload indication
The calibration settings can be adjusted as follows:
•
Calibrator: select between Type 4231 and a custom calibrator
•
Calibration Level: Enter the specific level of your custom calibrator. If you are using,
Type 4231, calibrator level is automatically detected, (shown as Auto detect)
Note: The Auto detect setting enables the automatic detection of the calibration level. For
free-field microphone types (like Type 4950) the calibration level from Sound Calibrator
Type 4231 is either 93.85 dB or 113.85 dB. For diffuse- or pressure-field types, the
calibration level is either 94 dB or 114 dB. The calibration process automatically
determines the correct level
•
5.4
Calibrator Serial Number: type in the serial number for your calibrator. The calibrator will
be documented in the calibration history
Calibration History
To view calibration history, tap Calibration History > on the Calibration Details screen (Fig.5.2).
The analyzer saves the last 20 calibrations, plus initial calibration, which can be viewed on the
Calibration History screen (Fig.5.3). Tap
to return to the calibration details screen; tap
again to return to the Measurement screen.
Fig.5.3
Calibration History
screen
CHAPTER 5
Calibration
5.5
Transducer Database
The specifications for Microphone Type 4950 (and Preamplifier ZC-0032), which comes fitted
in the top socket of the analyzer, are described on the Transducers screen.
1) Tap the Main Menu icon
then Transducers to open the Transducer screen (Fig.5.4).
Fig.5.4
Transducers screen
2) Tap on the transducer name/number, or select the Plus icon
view the details in the database, see Fig.5.5.
next to name/number, to
Fig.5.5
Details of the
microphone
You can add other microphones by tapping on the Add New Microphone icon
, selecting
Microphone from the drop-down list and filling in the details of your particular microphone.
All the details for the microphone can be found on the screen.
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44
Type 4950 is the default entry. Change Microphone Type if you are using a different Type. For
known microphone types, a number of parameters are automatically set.
Note: For Type 4950 the parameters Nominal Sensitivity, Free-field and Capacitance are set
automatically. See details in Appendix C. The analyzer can then make sound field corrections
and windscreen corrections as specified in the setup. To confirm which type of correction is
being applied, an icon is displayed in the measurement Status field. If the microphone is
unknown to the analyzer, no corrections can be made and no icon appears in the Status field.
The parameters mentioned above have to be set manually (that is, typed in). We recommend
that you insert the value for Nominal Sensitivity directly from the calibration chart. Nominal
Sensitivity is used in the automatic level detection calculations, when calibrating using Sound
Calibrator Type 4231, to determine whether the level is 94 or 114 dB.
In the top line of the status field you can select which transducer is currently connected to the
analyzer. This can also be done via the Setup screen by selecting Input, then selecting the
transducer in the Transducer Used: field.
At the bottom of the parameter list you can select the calibration history for the currently
selected transducer by tapping on the Calibration History link. See section 5.4 and Fig.5.2.
When you have finished, tap
5.6
to return to the measurement screen.
Calibration Reminder
The Calibration Reminder tab, see Fig.5.6, allows you to keep track of when you need to run
your next Accredited/Traceable calibration, and shows you the date of your last calibration.
Fig.5.6
Calibration reminder tab
CHAPTER 5
Calibration
The automatic calibration reminder facility will pop-up a reminder approximately 2 months
before your next calibration is due and keep on reminding you every week until you do one of
the following actions:
•
Send your instrument for Accredited/Traceable Calibration and update the Last
Calibration date
•
Check the ‘Do not ask/remind again’ checkbox in the reminder pop-up (see example in
Fig.5.7)
•
Disable the automatic calibration reminder
Fig.5.7
Reminder pop-up
You can set the Calibration Interval parameter to either 12 months or 24 months depending on
your local requirements.
You can disable the facility by selecting the Automatic Calibration Reminder parameter to Off.
5.7
Charge Injection Calibration
5.7.1
Theory of Charge Injection Calibration
If an external sound source is not available, for example during short or long term monitoring,
you can check the calibration of the analyzer using the Charge Injection Calibration (CIC)
facility. This is done automatically during a logging measurement (see section 11.2). Unlike an
internal calibration, the Brüel & Kjær patented CIC technique enables a complete
measurement chain to be verified, including the microphone, the preamplifier, the cabling and
the analyzer. Each verification measurement is compared to an initial reference measurement.
As the name implies, the method uses injection of charge into the microphone and preamplifier
input circuit, and the ratio between the measured signal and the injected signal is measured
(CIC Ratio), see Fig.5.8.
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46
The method is based on detection of changes in impedance at the input terminal. It was
developed for monitoring of microphone channels and requires a preamplifier with a small,
extremely stable, built-in capacitor which makes it possible to apply an electrical signal to the
preamplifier (and microphone) input terminal.
A stable CIC Ratio means a ‘healthy’ system and assures stable operation of microphone,
cable, preamplifier and the remaining measurement system.
Fig.5.8
Charge Injection Calibration.
the microphone and fed with
Ci are constant. Changes
capacitance (Cm ), etc., will
calibration
Microphone
Preamplifier
Low-leakage resistance capacitor Cc is set in parallel with
voltage ei. The ratio eo / ei is constant when g, Cc , Cm and
to preamplifier gain (g), cable parameters, microphone
change eo / ei , and hence indicate probable changes in
Cable
Generator
(
eo
Cc
ei = g C + C + C
m
i
c
Cm
)
Cc
eo
g
Ci
R1
ei
970294/1
5.7.2
Performing a Manual Charge Injection Calibration with the Analyzer
Charge Injection Calibration is only available with Logging Software BZ-7133.
Tap the Main Menu icon
and select Calibration from the list. Click the CIC tab to view
the various CIC parameters that are available. These include the results of the latest manual
CIC, together with the reference, see Fig.5.9.
The status field at the top of the screen informs you how to perform the CIC.
Press the Start CIC button to start the CIC. After approximately 10 s you will see the result.
Normally, the CIC Reference Ratio is set the very first time a CIC is performed, however, you
should update the CIC Reference Ratio if you change the microphone preamplifier. You do this
by checking the Use as new Reference checkbox.
The CIC Reference Ratio and CIC Ref. Date parameters display the results of the very first
manual CIC, and this will be used as the ‘reference’ for all subsequent CIC Ratio
measurements.
Note: Each microphone in the transducer database has a CIC Reference Ratio.
If the CIC Ratio parameter deviates by more than 0.5 dB from the CIC Reference Ratio, then
there may be a problem, and this should be investigated.
CHAPTER 5
Calibration
Fig.5.9
CIC Calibration tab
The result of the Charge Injection Calibration consists of four parameters:
•
CIC Ratio
•
CIC Ratio Date
•
Deviation from Reference
•
CIC Result
The CIC Result can be either: ‘Passed’, ‘Background noise too high’ or ‘CIC Ratio deviates
from Ref.’
47
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Chapter 6
Data Management
6.1
Organising Measurements
6.1.1
Description of Jobs and Projects
When saving a set of measurement results, they are organised together with setup information,
calibration information, annotations and signal recordings in a project.
A project contains the following:
•
Measurement results:
–
Broadband values (for example, LAeq, LAFmax, LAFmin, etc.)
–
Frequency spectra (if 1/1-octave or 1/3-octave Frequency Analysis Software for 2250
Light, BZ-7131/32 are enabled on your analyzer and you have selected a Frequency
Analyzer template)
•
Weather and GPS data
•
Measurement Setup
•
Display Setup (parameters you have selected)
•
Information on the microphone
•
Calibration
•
Signal Recordings (attached to measurements as required)
The Project name is automatically created by combining the Project Name Prefix with a
number (starting from 001), that is, Project 001 for the first project, Project 002 for the next, and
so on.
If preferred, the Project Name Prefix can be changed from the default name of ‘Project’. To do
this, tap the Main Menu icon
, then Preferences > Storage Settings to reveal the Project
Name Prefix. Tap on the current name to reveal a keyboard for you to type in the required
name.
Projects are saved in folders which are called ‘jobs’ on your analyzer. These are similar to
folders in the Windows® filing system.
Hand-held Analyzer 2250 Light – User Manual
50
Jobs can be created in the internal memory, on a Secure Digital (SD) Card, on a USB memory
stick (hardware version 4 only), or for hardware versions 1 – 3, on a Compact Flash (CF) Card.
6.1.2
Navigating in Jobs
A results browser, called Explorer, is used to navigate through the jobs and projects.
To view all jobs and projects, tap the Main Menu icon
options. A screen similar to Fig.6.1 will appear.
and select Explorer from the list of
Fig.6.1
The Explorer screen
The example from Explorer in Fig.6.1 displays a list of jobs and then some projects, which
have not been stored under a job name.
The topmost line in the status area (Internal Disk\ in the example in Fig.6.1) shows the location
in the memory.
The next line in the status area contains 4 icons for navigation.
Tap the
icon to go up one level in the job-levels. The top level is the Memory level, where
physical memory devices can be selected. You can select:
•
With Hardware Versions 1 – 3:
–
Internal Disk
–
SD-Card (if a card is inserted in the SD slot)
–
CF-Card (if a card is inserted in the CF slot)
• With Hardware Version 4:
–
Internal Disk
–
SD-Card B (if a card is inserted in the bottom SD slot)
–
SD-Card T (if a card is inserted in the top SD slot)
–
USB-Mem (if a memory stick is inserted in the USB Standard A socket)
CHAPTER 6
Data Management
To go down one level (that is, exit the Memory level), you tap on the job name (Internal Disk in
this case) and select Open from the drop-down list – or you simply tap on the memory icon
next to Internal Disk.
Tap the
icon to create a new job folder. The first job folder name will be ‘Job 01’,
subsequent job folders will be labelled ‘Job 02’, ‘Job 03’, etc. You can rename the job folder
name by tapping on the name and selecting rename from the drop-down list. Use the keyboard
to key in a new name – accept by tapping on the Enter key .
To go down one level (open a job), you tap on the job name in the list and select Open from the
drop-down list – or you simply tap on the job icon to the left of the job name.
You can move a job/project (and its content) to another job by tapping the job name/project
name and selecting Cut from the drop-down list. Then navigate to the job you want as the new
holder of the moved job/project and tap on the Paste icon
, or navigate to the level above
and tap on the job name and select paste from the drop-down list.
In order to copy a job/project do as described above, but use Copy instead of Cut from the
drop-down list.
Select Delete from the drop-down list in order to delete the job/project and all of its contents.
You can select more than one job/project for copy, cut or delete by tapping and holding the
stylus on a job/project name and then dragging the stylus up or down to select other
jobs/projects.
6.2
Selecting Default Measurement Job/Path
Tap the
icon to select the current job as the default measurement job, where all projects
will be saved when you press the Save
pushbutton. The job name, followed by the current
project name, will appear in the topmost line in the status area to confirm which job you have
selected.
6.3
Recalling Measurements
You can display the measured results or re-use setups from previously saved projects, or view
logged data as a profile, use the Open command in Explorer – this will recall the project
template (display settings and measurement setup used on the saved results) along with the
results. This will, however, stop and reset the current measurement
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6.3.1
Viewing Data and Re-using Setups from Projects
Use Explorer to locate the project with the setup you want to re-use, then tap on the project
name and select Open from the drop-down that appears. This will stop and reset the current
measurement and load the project including all setups and data. You are now using the same
screens as the ones you were using just before you saved the data. Use the screens to browse
the results. Pressing Start/Pause
will start a new measurement using the setups from the
project.
You can save the setup information in a template by tapping the Main Menu icon
selecting Save Template.
6.3.2
and
Viewing or Listening to Annotations
Use Explorer to locate the project with the annotations you want to view/hear, then tap the
project name and select Annotations from the drop-down that appears (or simply tap the
Annotations icon
and select the Annotations tab. This will show all annotations attached
to the project (Fig.6.4.)
Fig.6.2
Example of annotations
attached to a project
The Loudspeaker icon
represents a signal recording. With hardware version 4, you can tap
the annotation name and select Play from the drop-down that appears (or tap the icon) to play
the recording using the headphone output.
Note: You can also rename or delete annotations, or copy or move annotations to other
projects.
The Text icon
represents a GPS note. Tap the annotation name and select Open from the
drop-down that appears (or tap the icon) to open the Notes Editor. View the note and, if
required, edit the note using the simulated keyboard that appears at the bottom of the screen.
Tap
to accept the changes and return to the previous screen.
53
Chapter 7
Connection to PC or Smart Phone
7.1
Introduction
You can connect to your analyzer from a PC or smart phone in a number of different ways
using a wide range of different connection types:
•
Use Measurement Partner Suite BZ-5503 for full control of the analyzer – see section 7.2
•
Use an Internet browser for online display and control of the analyzer – see section 7.4
Two different methods are available for connecting to the analyzer:
•
USB: BZ-5503 connects to the analyzer through a USB cable
•
Network: The analyzer is connected to a network (local or Internet) via a modem, LAN
cable or a wireless LAN adaptor. BZ-5503 or an Internet browser will then be able to
connect to the analyzer through TCP/IP using the analyzer’s (global) IP address
In addition to connecting to the analyzer, the analyzer itself can notify you by SMS, or email,
based on various conditions – see section 8.4.
Table 7.1 gives you an overview of the different connection possibilities including links to
relevant chapters with more details.
Hand-held Analyzer 2250 Light – User Manual
54
Table 7.1 Connection overview
Connect from
Connection
Type
Available
Notifications
Settings in Preferences
BZ-5503
USB
Modem = Disabled
see section 8.2.
–
BZ-5503, Internet
Browser or Smart
Phone with Internet
Browser
Network
GPRS/EDGE/H
SPA modem
Modem = GPRS/EDGE/HSPA
Dialup
Settings in Dialup Networking.
Network Settings.
Possibly settings in DynDNS.
see section 8.2 and 8.3.
Email
see section 8.4
BZ-5503, Internet
Browser or Smart
Phone with Internet
Browser
Network
Ethernet cable
Modem = Disabled
Possibly settings in DynDNS.
Network Settings.
see section 8.2 and 8.3.
Email
see section 8.4
BZ-5503, Internet
Browser or Smart
Phone with Internet
Browser
Network
CF WLAN (
versions 1 – 3
only)
Modem = Disabled
Possibly settings in DynDNS.
Network Settings.
Settings in Wireless Network.
see section 8.2 and 8.3.
Email
see section 8.4
Modem = Disabled
Possibly settings in DynDNS.
Network Settings.
see section 8.2 and 8.3.
Email
see section 8.4
SD WLAN
(G4 only)
BZ-5503, Internet
Browser or Smart
Phone with Internet
Browser
Network
DSL
Modem/Router
Note: The on-line help for BZ-5503 contains additional information on how to connect an
instrument using the different connection types.
7.2
Transferring Measurement Data to Your PC
Measurement Partner Suite BZ-5503 is used for communication between your PC and
analyzer.
You can use this software to:
•
Transfer measurement data and templates from the analyzer to your PC, and vice versa
•
View data
•
Organise data on the analyzer
•
Create users on the analyzer
•
Upgrade software on the analyzer
•
Install software licenses on the analyzer
CHAPTER 7
Connection to PC or Smart Phone
Using this software, measurements on the analyzer can be controlled from your PC and
displayed online, using the same user interface on the PC as on the analyzer.
Data transferred to the PC are organised in archives. You can view the measurement data in the
archives.
7.2.1
Connect to Your PC
Connect the analyzer to your PC using one of the following:
•
Hardware versions 1 – 3:
–
•
The supplied Mini USB Cable AO-1476
–
A modem connection
–
A LAN connection via a CF card adaptor
Hardware version 4 (G4):
–
The supplied Micro USB Cable AO-1494
–
A modem connection
–
A LAN connection
The connection can be protected by requiring a login with user name and password – see
settings in section D.10.
See Chapter 8 for descriptions on how to set up your preferences, including PC connections.
7.3
Post-processing and Reporting
Use the optional modules of the Measurement Partner Suite for data analysis and postprocessing. For example, data in the archives can be post-processed directly in the Logging
Module BZ-5503-A or Spectrum Module BZ-5503-B. Furthermore, data can be exported to
various post-processing tools like Evaluator™ Type 7820 for assessing environmental noise,
Protector™ Type 7825 for assessing workplace noise, or Microsoft® Excel®.
Signal recordings can be imported to Brüel & Kjær’s PULSE™ Multi-analyzer platform for
further analysis.
For more information on Measurement Partner Suite BZ-5503 and the PULSE multi-analyzer
platform, see our website at www.bksv.com or contact your local Brüel & Kjær representative.
For further information, please refer to the on-line help included with the relevant PC Software.
This software is supplied on the Environmental Software DVD (BZ-5298), which is included
with your the analyzer.
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56
7.4
Internet Browser for Online Display and Control of
the Analyzer
When the analyzer is connected to a network (see Fig.7.1) you can connect to the analyzer
from a PC or smart phone using an Internet browser supporting Java Scripts.
Analyzer Settings
You access preferences by tapping on the Main Menu icon
from the list of options (the screen shown in Fig.8.1 will appear).
and selecting Preferences
Tap on Remote Access Settings, or select the plus icon
next to Remote Access Settings and
set the Web Server Parameters to Enabled. Define sets of Usernames and Passwords:
•
one set for guest use (view only)
•
one set for administrator use of the instrument (view and full control)
See section 8.5 and Table D.10 for more details.
Connect to Analyzer
When you enter the IP address or Hostname of the analyzer (see section 8.2. and 8.3) in the
address or location bar of the Internet browser, the following screen appears
Fig.7.1
2250 home page
Click the Help link to get more detailed help on using the web page. Press the Service link for
updating the software or for rebooting the analyzer.
CHAPTER 7
Connection to PC or Smart Phone
Click the View Instrument button to enter the web page for viewing the instrument only. You
might be prompted for the Guest Username and Guest Password defined for the web server
(see section 8.5).
Click the View and Control Instrument button to enter the web page for full access to the
instrument. You will be prompted for the Username and Password defined for the web server.
Fig.7.2
Prompt for username and
password
The View Instrument Web Page
Fig.7.3 shows the View Instrument web page, where you have an on-line display of the
instrument. You can use the on-line display for monitoring the measurement only, you cannot
change the display, or setup parameters, or start and stop measurements, etc.
Fig.7.3
On-line display –
for monitoring only
The instrument can be viewed by several people at the same time, however, the instrument
response time will increase with the number of connected browsers.
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58
The View and Control Instrument Web Page
Fig.7.4 shows the View and Control Instrument web page, where you have an on-line display
and keyboard for full control of the instrument. The on-line display can be used for monitoring
the measurement.
The keyboard on the screen has the same functions as the instrument’s keyboard. Click on the
display with the cursor to control the instrument as you do when tapping on the screen of the
instrument.
Fig.7.4
On-line display and
keyboard for full control
of the instrument
59
Chapter 8
Advanced Use of Your Analyzer
– Tips and Tricks
8.1
Setting Your Preferences on the Analyzer
You can specify a number of parameters controlling display settings, power settings, regional
settings and storage settings. These parameters are grouped together under Preferences.
You access preferences by tapping on the Main Menu icon
from the list of options. The screen shown in Fig.8.1 will appear.
and selecting Preferences
Fig.8.1
The Preferences screen
8.1.1
Display Settings
Tap on Display Settings, or select the Plus icon
of available display settings, see Fig.8.2.
next to Display Settings, to expand the list
Hand-held Analyzer 2250 Light – User Manual
60
Fig.8.2
Display Settings screen
You can select the optimum choice of brightness for the traffic light (for example, High in
bright light conditions and Low in dark conditions) and you can select whether to have
backlight on the keyboard, or not. In very bright lighting conditions you will not be able to see
the backlight, so set it to Off to save some power.
A link is also provided in Display Settings to adjust the touch-sensitive screen. Tap on Adjust
Touch Screen > to display a full screen with guidance on how to tap on a cross five times at
different places on the screen. At the end of the adjustment procedure you can save the values
or cancel the adjustment.
To change the number of decimal places on your dB results readout between 1 and 2 decimal
places, or to change the number of digits on your engineering units readout between 3 to 4
digits, tap Resolution of Readings and set to Normal or Extended, as required.
When you have made your choices, tap on Display Settings, or on the Minus icon
collapse the list.
8.1.2
, to
Power Settings
The analyzer has an advanced power management function, that takes care of supplying the
different circuits with adequate power and switches off those circuits that are not in use. These
power management functions can be changed via the Power Settings screen, see Fig.8.3.
Tap on Power Settings, or select the Plus icon
available power settings:
•
next to Power Settings, to expand the list of
Backlight Dim
•
Standby
•
Turn off Backlight (only with hardware versions 1 – 3)
•
Ext. Power (only with hardware version 4 (G4))
CHAPTER 8
Advanced Use of Your Analyzer – Tips and Tricks
Fig.8.3
Power Settings screen
Left:
Hardware versions 1 – 3
Right:
Hardware version 4
The backlight will be switched on as soon as you operate the instrument, either by using the
keyboard or the stylus on the touch-sensitive screen. The backlight brightness will be one of
the 6 levels set by tapping on the backlight icon
at the bottom of the screen. Select the
Minimum level for minimum brightness (and power consumption), and Maximum level for
maximum brightness (and power consumption). Once you have chosen the level, select Close
to save the settings.
When the analyzer has been left unused for the time specified in the Backlight Dim parameter,
the backlight level will change to the dim level (Minimum).
•
For hardware versions 1 – 3, this state will hold for the time specified in the Turn off
Backlight parameter (if still left unused). If the analyzer has been left unused for the time
specified in the Backlight Dim parameter plus the Turn off Backlight time period, then the
backlight will be switched off completely (Fig.8.4). Use the keyboard or tap the screen to
switch the backlight on again
•
For hardware version 4, the backlight will never be switched off completely because the
Minimum dim level already has the lowest power consumption
Fig.8.4
‘Standby’ Parameter
Power Settings overview
‘Backlight Dim’
Parameter
‘Turn off Backlight’
Parameter (hardware v. 1 – 3)
Backlight off
Time
040284/2
If the instrument is left unused, not measuring and not communicating over the USB interface,
it will go to standby after the time specified in the Standby parameter. If the instrument is in
standby mode, you have to press the power-on pushbutton
to switch it on again.
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62
The instrument will automatically switch off when it has been in standby mode without
external power for more than 30 hours.
Note 1: If the instrument is powered externally the Standby After parameters are ignored and
the instrument will never go to standby. However, if the instrument is left unused for more than
Standby After time the Standby After setting will overrule the Backlight settings and the
backlight will be switched off.
Note 2: Please use the Display Settings in conjunction with the Power Settings to save power
during measurements and extend the battery operating time.
Hardware version 4 (G4) has an Ext. Power setting, which determines whether the analyzer
automatically switches on and charges the battery when external power is applied or the battery
is just charged. For unattended externally powered measurements (when not using timers), it is
recommended to select the Switch On and Charge to ensure measurement will restart in case of
temporary power failure.
Hardware versions 1 – 3 have a similar function, but it is a small, manual switch at the back of
the analyzer, behind the battery pack, which you must set. Remove the battery to access the
switch.
When you have made your choices, tap on Power Settings, or on the minus icon
the list.
8.1.3
, to collapse
Regional Settings
Tap on Regional Settings, or select the plus icon
of available regional settings, see Fig.8.5.
next to Regional Settings, to expand the list
Fig.8.5
Regional Settings screen
Select your preferred settings for Decimal Point and Date Separator and select your preferred
date/time format from the six different formats provided in the drop-down. Then select your
time zone from the list.
CHAPTER 8
63
Advanced Use of Your Analyzer – Tips and Tricks
A selection of common languages have been provided with the user interface of the analyzer.
Select the one you prefer to change it immediately.
Built-in help is provided in the more commonly used languages – if your particular language is
not covered, English will be chosen automatically.
Select a keyboard matching the one you prefer when using your PC.
Select the unit system for Wind Speed, Temperature and Dimensions as required:
•
Use the SI setting for measurement units in accordance with the SI standard, for example,
measuring Wind Speed in m/s
•
Use the US/UK setting for imperial measurement units, for example, measuring Wind
Speed in mph
When you have made your choices, tap on Regional Settings, or on the minus icon
collapse the list.
8.1.4
, to
Storage Settings
Each time you save the results of a measurement, the analyzer suggests a project name and
number for the project. The Project Name Prefix can be generated automatically (from the start
date of the project as Year, Month, Date in the format YYMMDD, for example, 051112 as
2005, November 12th) or you can specify a Project Name Prefix (max. 8 characters), using the
standard full character keyboard that pops up when you tap on the current name set as the
project name prefix, see Fig.8.6. (The field where you type in the project name prefix will
appear at the top or bottom of the pop-up keyboard, depending on how many settings you have
expanded in the list.) The project suffix number will be generated automatically.
Fig.8.6
Storage Settings screen
Hand-held Analyzer 2250 Light – User Manual
64
8.1.5
Headphone Settings
The headphone settings allow you to control the output to the headphone socket on the
connector panel.
You can listen to the measured signal for monitoring purposes. Select between A/B-weighted,
C-weighted or Z-weighted. (A/B-weighting is determined by setting the parameter in Setup >
Frequency Settings > Broadband (excl. Peak)).
The measured signal covers approximately 120 dB (from approximately 20 dB to 140 dB with
a Type 4950 microphone of nominal sensitivity). The output of the headphone socket covers
approximately 75 dB. Use the gain settings for the measured signal to adjust the output level to
suit the listening conditions. If the signal has a very high dynamic range (or the levels are
unknown), you can set Automatic Gain Control to On – this will convert the 120 dB input
range to 40 dB output range enabling you to hear signals of any level clearly.
Gain settings are provided for the measured signal. Tap on the gain parameter and use the
keypad to enter a new setting. Use ‘@’ to assign the new value for immediate response at the
output – or use the up/down navigation keys to increment/decrement the value.
Note 1: A 0 dB gain on the measurement signal means you get a 1 V output for a 1 V input
(when the measured signal Automatic Gain Control is set to Off).
Note 2: In hardware version 4 while playing back an annotation, you can use the Up/Down
navigation keys to increase/decrease the gain of the annotation.
Note 3: If you do not want to listen to the input signal, then set the Listen to Signal parameter
to No, to economise on power.
8.1.6
Printer Settings
You can make screen dumps on a printer connected to the analyzer using a standard USB cable,
or on hardware versions 1 – 3, the supplied Adaptor AO-0657. Use the Printer Settings to
select your preferred printer.
When a printer has been selected under the Printer Used parameter, then the Print Screen
command in the Main Menu list appears. Use this command to print a screen dump of any
screen on the analyzer.
The printer must either be a mobile thermal printer (from AM Tech or Seiko) or accept the
PCL® printer language.
•
MPS: Mobile Pro Spectrum – a mobile thermal printer from AM Tech (www.amteq.co.kr)
•
PCL: printers accepting PCL printer language
•
PCL Inkjet: suitable for Inkjet printers and supports colour printing
•
PCL Laser: suitable for laser printers
•
Seiko DPU: DPU-S245 or DPU-S445 – mobile thermal printers from Seiko Instruments
(www.seikoinstruments.com)
PCL is the Printer Control Language developed by Hewlett-Packard (see www.hp.com). For
PCL printers, you can use the Top and Left Margin parameters to position the print on the
paper, and use Width and Height parameters to set the size of the print.
CHAPTER 8
Advanced Use of Your Analyzer – Tips and Tricks
8.2
Modem/DynDNS Settings
You can use the analyzer for monitoring in remote places and control it using Measurement
Partner Suite BZ-5503, via a telephone connection – wired or wireless – using suitable
modems or via network connections. See the overview of possibilities in Table 7.1, in
Chapter 7. When you connect via a modem, or via a network connection, you will see the
contents of the analyzer in the Instrument Task as if you had made the connection via USB.
You then have the same possibilities for transferring data to the Archive and organising data
on the analyzer, as if you were connected via the USB connector.
Modems can be used for connection in the following way:
The analyzer is connected directly to the Internet through a modem. BZ-5503 or an
Internet browser will then be able to connect to the analyzer through TCP/IP using the
analyzer’s (global) IP address. The setup of the modem connected to the analyzer is
described in section 8.2.2 – please refer to the BZ-5503 on-line help for details on how to
make a connection.
8.2.1
Connection to the Network using a LAN Modem
Using a 3G modem with LAN interface is a simple and very reliable and powerful way of
remotely connecting to the analyzer.
Set up the modem according to its user manual (usually requires connection to a PC) before
you connect the modem to your analyzer. When ready, connect the modem to the analyzer
using a LAN cable. For hardware versions 1 – 3, you will also need the 10/100 Ethernet CF
Card UL-1016 (see “Ordering Information” on page 136.).
The Modem parameter should be set to Off.
The following modem has been tested:
•
Airlink Raven XE, Intelligent 3G Ethernet Gateway from Sierra Wireless
(www.sierrawireless.com)
Note: The SIM card account should include a data subscription and should be usable without a
pincode.
8.2.2
Connection to the Network using a GPRS/EDGE/HSPA Modem
Note: The SIM card account should include a data subscription and should be usable without a
pin-code.
To use the modem you need to set up the parameters in Dialup Networking (listed below) and
set the Modem parameter to GPRS/EDGE/HSPA Dialup.
Parameters in Dialup Networking:
•
APN (Access Point Name) is an identifier required by the Network Operator. Examples are
internet, public and www.vodaphone.de
•
Username, Password and possibly Domain should be set as required by the Network
Operator.
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When the Modem parameter is set to GPRS/EDGE/HSPA Dialup, then a connection is made
using the settings in Dialup Networking. The Status parameter reflects the current status of the
network connection – e.g., ‘Connected’ or ‘Disconnected’. If the connection fails, then the
analyzer will try to reconnect – until it succeeds, or the Modem parameter is set to Disabled.
If the connection succeeds, then the instrument will automatically get an IP address, which is
readable (but not accessible) in Network Settings – for more details see section 8.3.
The IP address is the address on the WAN (Wide Area Network) or Internet. Use this address in
BZ-5503 or an Internet browser to connect to the analyzer.
Note: In some cases you might be able to get a static IP address from the Network Operator,
which means that the analyzer will always get the same IP address, when connected to the
network. However, typically the IP address will be renewed each time the analyzer connects to
the network. In order to deal with this in BZ-5503 or an Internet browser you need to use
DynDNS – see section 8.2.3.
Modems with USB Interface
Note: Turn off the analyzer when connecting the analyzer to a modem.
The following modems have been tested:
•
Airlink Fastrack Xtend GPRS, EDGE and HSPA from Sierra Wireless
(www.sierrawireless.com)
Modems with an USB interface can be connected to the USB Type A socket on hardware
version 4.
Modems with RS– 232 Serial Interfaces
The following modems have been tested:
•
FASTRACK Supreme 10 and 20 GSM/GPRS/EDGE Modem from Wavecom
•
Airlink Fastrack Xtend GPRS, EDGE and HSPA from Sierra Wireless
(www.sierrawireless.com)
For hardware version 4, modems with an RS– 232 serial interface can be connected using a
USB to serial converter inserted in the USB Type A socket of the analyzer. The following USB
to serial converters have been tested:
•
USB to RS–232 Converter UL-0250 (see “Ordering Information” on page 136.)
•
ES-U-1001-R10, ES-U-1001-B10 and ES-U-1001-A from EasySync
(www.easysync-ltd.com)
•
USB to RS232 Standard, USB to RS232 Professional and USB to RS232 Mini STD from
U.S. Converters (www.usconverters.com)
For hardware versions 1 – 3, use a compact flash to serial converter inserted in the compact
flash slot of the analyzer. The following compact flash-to-serial converter has been tested:
•
Serial I/O CF Card – Ruggedized from Socket (www.socketmobile.com)
CHAPTER 8
Advanced Use of Your Analyzer – Tips and Tricks
Compact Flash Modems
The following modem has been tested:
•
Compact GPRS from Pretec (www.pretec.com)
Compact flash modems can be inserted directly in the compact flash socket of the analyzer.
8.2.3
DynDNS
If the analyzer is connected to:
•
The Internet through a GPRS/EDGE/HSPA modem, or
•
A local network with access to the Internet through a DSL modem/router
And you want to connect to the instrument from a place outside the local network, then you
need to know:
•
Global IP address of the instrument or
•
The global IP address of the DSL modem/router (and ensure that correct port forwarding
in has been set the router – see details in the on-line help for BZ-5503)
In some cases the global IP address is static and will never change, so you connect to the
instrument using BZ-5503 or an Internet browser by using this IP address.
Normally when you browse to addresses using an Internet Browser you do not use the IP
address itself, but a hostname for it (e.g. you would use the hostname www.google.com instead
of ‘74.125.77.99’). This requires a DNS (Domain Name System) provider, which is a kind of
Internet phone book that translates hostnames to IP addresses for you.
However, for a GPRS/EDGE/HSPA or even a DSL router then often the global IP address is
renewed at each new connection or at certain time-intervals (e.g., every two weeks). In this
case you will have to change the IP address in BZ-5503 or the Internet Browser accordingly. To
avoid this, a service like DDNS (Dynamic Domain Name System) can be used.
DDNS is a network service that provides the capability for a modem/router/computer system to
notify a domain name system provider to change, in real time (ad-hoc), the active DNS
configuration of its configured hostnames and IP addresses. This will ensure that the hostname
you use will always be updated to reflect the correct IP-address.
The analyzer supports DDNS provided by the world-wide DDNS service provider
‘DynDNS.com’.
The analyzer can then be configured to notify DynDNS.com each time the global IP address is
set or changed. When BZ-5503 or an Internet Browser connects to the analyzer it then uses a
hostname defined by DynDNS.com. From DynDNS.com it then gets the updated IP address.
You need to make an account at DynDNS.com, specifying a user name and a password for the
account and a hostname (e.g., 'MyBK2250.dyndns.org') identifying the analyzer.
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In the analyzer you need to specify the Hostname, Username and Password and set Active to
Yes in Preferences, under Modem/DynDNS settings. Each time the analyzer detects a change in
the IP address it notifies DynDNS.com.
Note: To avoid too much traffic at DynDNS.com, the analyzer ensures that this service doesn't
allow updates of settings more frequently than every 10 minutes. So you may experience up to
a 10 minute wait for DynDNS settings to update.
8.3
Network Settings
The analyzer can be connected to a LAN (Local Area Network) through an Ethernet interface
or to WLAN (Wireless Local Area Network) using equipment conforming to the
IEEE 802.11a/b/g standard. This connection can be used to synchronise measurement and
setup data with a host PC using BZ-5503.
The analyzer supports TCP/IP (Transmission Control Protocol/Internet Protocol) on the LAN
and WLAN.
This requires the analyzer to have a unique address on the network. This address is called an IP
address and consists of four sets of 3-digit numbers, e.g. 010.116.121.016.
The IP address can be obtained in different ways:
•
Automatically
•
Using DHCP
A DHCP (Dynamic Host Configuration Protocol) Server on the network assigns
automatically an IP address to the analyzer when connected to the network. This is the
most common way of setting up IP addresses.
•
Using Link-local
If no address is automatically assigned by the DHCP Server, then after a few seconds
the analyzer will use an address from the Link-local address range 169.254.x.x.
This will most likely be the case when connecting the analyzer directly to a PC using
an Ethernet Crossover cable
•
Manually
You setup the IP address manually.
This will typically be the case in a private network without a DHCP Server.
8.3.1
Connecting to the Analyzer
Wired LAN Connection
•
Use a “straight-through” (standard) Ethernet cable with RJ45 connectors at both ends to
connect the analyzer to the network (via a hub, switch or router).
•
Use a “crossover” Ethernet cable with RJ45 connectors at both ends to connect the
analyzer directly to a PC.
Hardware version 4 has an Auto-MDIX facility, allowing you to use either a straight-through
or crossover cable to connect to a network or PC.
CHAPTER 8
Advanced Use of Your Analyzer – Tips and Tricks
WLAN Connection
The analyzer provides a wireless LAN option using a WLAN card.
Hardware version 4 accepts the following SD WLAN card:
•
P322 802.11abg SD WLAN from Socket Mobile (www.socketmobile.com) –
Brüel & Kjær order number UL-1025
Hardware versions 1 – 3 accept the following CF LAN and WLAN cards:
8.3.2
•
10/100 Ethernet Ruggedized CF Card from Socket Mobile (www.socketmobile.com) –
Brüel & Kjær order number UL-1016
•
Go Wi-Fi!® P500 CF WLAN, rev. B and rev. C from Socket Mobile – Brüel & Kjær order
number UL-1019
Parameters in Network Settings
Location
Use the Location parameter to specify a text up to 20 character long identifying the
analyzer or location of the analyzer. The Location will be displayed on the PC as well
as the serial number of the analyzer when browsing for analyzers in BZ-5503 and when
connected using the on-line display.
Note: The location parameter is useful for both USB and LAN connections.
Network Connection
•
•
Hardware versions 1 – 3:
–
None: (default)
–
CF Socket: Select this to use an Ethernet CF Card inserted in the Compact Flash
socket
–
LAN Socket: (default) Select this to connect via a LAN cable. This is disabled if an
Ethernet CF card is inserted in the Compact Flash socket
Hardware version 4 (G4):
For all analyzer types, the default is LAN Socket.
Set IP Address
Automatically: This will obtain an IP address from a DHCP server – if no server
available, then a Link-local address will be set
Manually: You have to set the IP Address, Subnet Mask, Default Gateway, Preferred
DNS and Alternate DNS (see below)
IP Address
The IP address of the instrument
Selectable if Set IP Address = Manually
Subnet Mask
The Subnet Mask combined with the IP address identifies the network segment the
analyzer is on
Selectable if Set IP Address = Manually
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Default Gateway
Address to a gateway for routing to another network
Selectable if Set IP Address = Manually
Preferred DNS
The IP address of the primary DNS server
Alternate DNS
The IP address of the secondary DNS server
MAC Address
The MAC Address of the network adaptor (LAN or WLAN) in use. MAC (Media
Access Control) Address is a unique identifier assigned to the network adaptor. This
field is for information only
Status
The status of the network connection, either Operational or Non-operational:
•
Operational: the network adaptor can be used for a connection
•
Non-Operational: the network adaptor cannot be used
Parameters for Wireless LAN Only
Name
Name (SSID) of the network you want to connect to. Update the name either by:
•
entering a name directly, or
•
tapping on the Available Networks and selecting a name from the list
Available Networks
Tap on the line to get a list of available networks. Tap on a name in the list to connect
to this network. The name is inserted in the Name line above this line. Each network
name is preceded with Signal Strength information, ranging from Excellent (displayed
as ‘• • • • •’) down to No Signal (displayed as no dots at all)
Security
Select the security as required by the network: Open, Shared, WPA PSK or WPA2 PSK.
Open and Shared are for WEP (Wired Equivalent Privacy) Infrastructure mode.
WPA PSK is for WPA (Wi-Fi Protected Access) with Pre-shared Key (also called Personal mode). WPA2 is an enhanced version of WPA
Encryption
Select the encryption as required by the network: None, WEP Enabled, AES Enabled or
TKIP Enabled. None is for Open security. WEP Enabled is for Open and Shared security. AES and TKIP Enabled are for WPA PSK and WPA2 PSK security
Encryption Key
Insert the encryption key required by the network. The key will be displayed until you
press Enter, then it will be replaced by ' *** '
CHAPTER 8
Advanced Use of Your Analyzer – Tips and Tricks
8.4
Notifications
The analyzer can send you a daily status or notify you if disk space is getting low or external
power has disappeared, etc. This is done via SMS or e-mail, as described in this section. The
SMS/e-mail notification contains a short status report for the analyzer. This facility is
especially useful if the analyzer is left for unattended monitoring.
8.4.1
Alarm Settings
If one or more of the following alarms occur, then a notification will be issued as either an SMS
or an e-mail, depending on your equipment and settings. If the notification fails (e.g. the
connection has been lost), then the analyzer will retry to send the notification once more after 5
minutes.
Table 8.1 Alarm Settings
Alarm Type
Condition
Comment
Power On
When analyzer is
switched on or reboots
Indicates start from a timer, or a power failure, or
unexpected behaviour
Measurement
State
When a measurement
starts or stops
Indicates measurement finished – or unexpected
behaviour
CIC
When Charge Injection
Calibration fails
Indicates possible measurement problem
Internal Battery
When Internal Battery is
entering a specified
state: High, Low or
Critical.
Indicates internal battery getting low. Internal Battery
will be in one of the states: Full, High, Low, Critical,
Charging or Unknown. You can set alarm to High,
Low or Critical in Preferences, Notification Settings,
Alarm Settings, Internal Battery.
Note: The internal battery will typically be in one of
the states Full or Charging if externally powered.
Entering one of the set states might then indicate a
power failure
Disk Space
When remaining disk
space drops to or below
a specified percentage of
the total disk space
Indicates disk space getting low – needs to be
swapped with an empty disk. Set the percentage in
Preferences, Notification Settings, Alarm Settings,
Disk Space
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Table 8.2 Content of Notification
Information Type
Content
Reason for notification
‘Test’, ‘Alarm’ or ‘Status’ followed by a short description
Time of notification
Date and Time
Instrument ID
Serial No. and Location
Status of current Disk
Free memory / Total memory
Status of Internal Battery
Full, High, Low, Critical, Charging or Unknown
Measurement Status (if available)
Running, Paused or Stopped
Latest CIC Result (if available)
Passed, Background noise too high, Ratio outside tolerances,
Ratio deviates from Ref., Undefined Ref., or Undefined
Current value of LAF (if available)
The value
Note: some of the information listed above may not be available, depending on the conditions
when the notification was sent, e.g., no measurement values will be available immediately after
a power on.
8.4.2
Text/SMS Notifications
Notifications via SMS (text message) can be used if you have connected a
GSM/GPRS/EDGE/HSPA modem to the analyzer (see section 8.2.2) and set Modem to
Disabled (a text message cannot be sent if the modem is set to GPRS/EDGE/HSPA Dialup).
In addition to sending SMS notifications initiated by alarms, you can send an ‘INFO’ SMS to
the analyzer and ask for an SMS notification, after which you will get a notification within 30
seconds.
You need to setup a Phone Number in Preferences, Notifications, SMS and set Active to Yes for
the SMS. You can also add a Name for the number for easier identification.
You can setup two individual SMS phone numbers for sending the SMS notification to two
recipients.
Set Notification to SMS and a notification will be sent by SMS to the active phone numbers,
when any of the alarm conditions are met, or if the analyzer receives an ‘INFO’ SMS.
You can test the system by tapping on the Main Menu icon
Notification via SMS”.
and selecting “Send
Note 1: Two to three text messages will be used to send the complete notification – depending
on the content and language settings.
Note 2: Text messages cannot be sent or received while the analyzer is connected to BZ-5503
or online display.
CHAPTER 8
Advanced Use of Your Analyzer – Tips and Tricks
8.4.3
Email Notifications
Email notifications can be used if the analyzer is connected to a network with access to a mail
server. This can typically be done if the analyzer is connected through LAN or by a
GPRS/EDGE/HSPA serial modem (see section 8.2.2 and section 8.3).
Go to Preferences > Notifications > E-mail and setup details for the email account under the To
parameter. The details consist of the SMTP server name, the SMTP port used, whether
SSL/TLS is required or not, the Account, the Username and Password for the account – please
consult section D.9 and your email provider for more details.
Set Notification to E-mail and a notification will be sent by email when any of the alarm
conditions are met.
To test the system by tapping
and select Send Notification via E-mail.
Example of email:
Subject: E-mail from 2479719 Abbey Road Test: Manual e-mail
Test: Manual e-mail
29-04-2009 12:51:16
Instrument 2479719 Abbey Road
SD-Card 383 MB / 483 MB
Internal Battery Charging
Measurement Status Running
CIC Result Passed
LAF 45.8dB
8.5
Web Server
To connect to the instrument using an Internet Browser, the following conditions must be
fulfilled:
•
The instrument must be connected to a network as described in section 8.2.2, section 8.2.3
and section 8.3
•
The Internet Browser must support Java scripts
The web page of the instrument has been tested on the following Internet Browsers:
•
Microsoft® Internet Explorer®, from version 7
•
Mozilla® Firefox®, from version 3
•
Google Chrome™, from version 2
•
Apple® Safari®, from version 4
You may also be able to connect to the instrument using Internet browsers on smart phones
such as an iPhone®.
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Password Protection
Connection to the instrument is password protected. There are two levels of protection:
•
Guest – for viewing only
•
Administrator – for viewing and controlling the instrument
Username and Password
Under Preferences you set the Username and Password individually for the Guest and for
Administrator accounts.
You need to specify Username and Password for the administrator, however, you can specify
whether the guest requires a login or not.
8.6
Connecting to Weather Stations and GPS Receivers
8.6.1
Weather Stations
The analyzer can be connected to the following weather stations:
•
Weather Station MM-0316 – for measurement of wind speed and wind direction
•
Weather Station MM-0256 – for measurement of wind speed, wind direction, ambient
temperature, ambient pressure, relative humidity and liquid precipitation
Please refer to the user manual for Noise Monitoring Terminal Type 3639-A, B and C (BE 1818)
for details on how to mount and connect the weather station using Utility Unit ZH-0689.
When you have connected the Weather Station, you can verify the connection by displaying the
instantaneous updated parameters Wind Dir. and Wind Speed from the Weather group.
Data from the weather station is automatically obtained during the measurement and saved on
data – see measurement parameters in Appendix B. The measured data can be displayed as
parameters from the Weather group.
Fig.8.7
Data from weather station
obtained during a
measurement and saved
on data
CHAPTER 8
Advanced Use of Your Analyzer – Tips and Tricks
8.6.2
GPS Receivers
The analyzer can be connected to the following GPS receivers:
•
GPS Receiver ZZ-0249 – for measurement of latitude, longitude, altitude and position error
Please refer to the user manual for Noise Monitoring Terminal Type 3639-A, B and C
(BE 1818) for details on how to mount and connect the GPS receiver using Utility Unit
ZH-0689.
•
ND-100S GPS USB Dongle from Globalsat (www.globalsat.com.tw) – for measurement
of latitude, longitude and altitude
•
BU-353 Cable GPS with USB Interface from Globalsat – for measurement of latitude,
longitude and altitude
The GPS receivers with USB interface can be connected directly to the USB port on analyzers
with hardware version 4. On hardware versions 1 – 3, the GPS receivers can be connected
using USB Adaptor AO-0657.
The first time you connect the GPS receiver to the analyzer (or if it has been several days since
you last connected them), be sure to be in an open area with a clear view to the sky (such as a
park or empty field). Wait for GPS initialization to complete. This may take a few minutes
depending on factors such as the distance from the previous coordinates, GPS signal strength
and surrounding terrain (tall trees and buildings can block the satellite signals).
Once the Latitude and Longitude (from the Special parameter group) display data, a fix has
been initialized (the LED on the GlobalSat GPS will also start to flash).
In some cases initialization can take up to several minutes depending on the conditions
mentioned above before complete GPS data are displayed on the screen. The GPS may get a
faster fix if connected through a small USB cable (delivered together with the GPS).
If a GPS receiver is connected when data is saved in a project, a GPS note is automatically
created as an annotation with the GPS information.
See more details on GPS notes in section 3.5.
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8.7
Timers and Automatic Measurements
Automatic control of the analyzer is available via one or more of the analyzer’s timers (up to
ten).
The purpose of a timer is to initiate measurements in the absence of an operator. Basically, a
timer will:
•
Switch on the analyzer at a preset time
•
Load a preselected template
•
Start a measurement as specified in the template
•
Stop the measurement after a preset time defined by the Timer Setup
•
Save the measurement
•
Switch the analyzer off
•
Repeat the above a preset number of times at preset intervals
For a timer to work, the analyzer must be in the ‘switched off’ state.
A timer will never interrupt the analyzer if it is already in use manually. If a switch-on time is
during the time the analyzer is in use, the timer opportunity is lost.
You can control the analyzer during a timer-initiated measurement as long as this does not
affect the measurements. If you try to change any parameters affecting the measurement you
will be warned of this. If you persist, the analyzer will revert to manual control and timer
control cannot be resumed.
The Timer Setup lists the timers that have been defined previously on the analyzer (i.e., added
by you or previous users).
Fig.8.8
Example Timer Setup
CHAPTER 8
Advanced Use of Your Analyzer – Tips and Tricks
In the topmost line you can add other timers by tapping on the Add New Timer icon
. You
can delete a timer from the list by tapping on the Delete Timer icon . Only timers created by
the current user can be deleted – to delete a timer defined by another user, you have to logon as
the other user and then delete the timer.
For each timer you can specify:
•
State: Enable or disable the timer
•
Name: Name the timer
•
Template: Select the template you want to use for the measurement.
•
Start Time: Set the start time – at least 3 minutes ahead of current time
•
Preset Time: Set the preset time for the measurement – regardless of the settings in the
template used by the timer
•
Stop Time: The time when the measurement stops – for information only
•
No. of Starts: Set to the total number of times you want to start the measurement
•
Start Every: The time interval between the start of each successive measurement. This
interval must be greater than Preset Time + 3 minutes
•
User: The user who specified the timer. Cannot be changed
Note: When using timers for automatic measurements, ensure the meter is connected to a
stable power supply. It is advised to select the Ext. Power setting ‘Charge battery only’ – see
section 8.1.2 – to avoid interference with timer operation.
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Chapter 9
Updating, Maintenance and Troubleshooting
9.1
How to Install New Applications
Sound Level Meter Software for 2250 Light BZ-7130, 1/1-octave Frequency Analysis Software
for 2250 Light BZ-7131, 1/3-octave Frequency Analysis Software for 2250 Light BZ-7132,
Logging Software for 2250 Light BZ-7133, Signal Recording Option BZ-7226 and Tone
Assessment Option BZ-7231are pre-installed on the analyzer. However, a valid license is
required to run the software. If you have purchased the analyzer together with the software
application(s), then the relevant license(s) will come pre-installed on the analyzer.
If you purchase a separate software application for your analyzer, then you have to install the
license on the instrument. This is done using Measurement Partner Suite BZ-5503, please
consult the on-line help included with the BZ-5503 software for instructions on how to install a
license.
Tap the Help icon
on the analyzer’s screen, then select About to get a list of installed
software and licenses.
9.2
How to Update/Upgrade Applications and Install New
Languages
Brüel & Kjær recommends that you always use the most current software available. New
versions of the analyzer software are available for download via the Brüel & Kjær website
(www.bksv.com), which you may want to install on your analyzer. To do this, use Measurement
Partner Suite BZ-5503, or connect the analyzer directly to the Internet to download. Some
software versions will be free updates, and some will be upgrades requiring that a new license
is purchased.
9.2.1
Update/Upgrade using BZ-5503
BZ-5503 can be used for updating or upgrading new software applications on your analyzer. It
can even downgrade to specific software versions if required by type approving authorities.
Using BZ-5503, you can also install licenses for the specific applications; and, if you have
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hardware version 1 – 3, install your preferred language (with G4 hardware, all languages are
pre-installed in the analyzer). Installation requires a USB connection between BZ-5503 and the
analyzer.
The BZ-5503 software will clearly indicate if the new software version is an update (free of
charge) or an upgrade (license fee). Please consult the on-line help included with the
BZ-5503 software for instructions on how to install upgrades/updates of the software,
together with your preferred language.
Tap on the Help icon
software and licenses.
9.2.2
on the instrument's screen, then select About to get a list of installed
Update Through the Internet
The analyzer can update software by itself, if it is connected to the internet – see section 7.1.
This method is particularly useful if the analyzer is used for long term monitoring, and you do
not want to go to the measurement site for servicing (that is, you want to disturb the
measurement as little as possible).
Note: The method is used for updating the software with the latest version available from the
Brüel & Kjær website. The languages already installed will be updated at the same time. If you
have hardware versions 1 – 3, you cannot install new languages or licenses – to do this, you
must use BZ-5503.
The update procedure is as follows:
1) Tap on the Help icon
on the instrument's screen, then select About to get a list of
installed software and licenses. Scroll down to the bottom of the screen and tap on the
Check for updates on the web…> link, the Software Update screen appears – see
Fig.9.1and Fig.9.2.
Note: This can be done remotely if you connect to the on-line display using either
BZ-5503 or an Internet Browser.
2) Click on the Check for Updates button to check for the latest updates. This will connect
to the Brüel & Kjær update server – if a new software version is available the build version
will be displayed and you can start the update (you will be warned, if the new version
requires a new license) or decline the update. If the versions that are available are not later
than those already installed you will be told so and the update will be terminated.
3) If you choose to update the analyzer, the software will start downloading to the SD or CF
card (CF card only with hardware versions 1 – 3) already inserted in the analyzer. You
need at least 200 MB of free space on the memory card. Depending on the speed and
quality of the Internet connection, this can take from a few minutes to several hours. If the
connection is lost, then the download will automatically continue when connection is
established again.
Note: The analyzer can continue measuring during the download period.
CHAPTER 9
Updating, Maintenance and Troubleshooting
4) When download is complete, the measurement is paused and normal use of the instrument
is prevented. Connections to the instrument are terminated and the upgrade of the
instrument will start. This will take 10–15 minutes and the analyzer will reboot when
finished. Any unsaved logging data will be saved and the analyzer is ready to use again.
5) Connect to the instrument again and verify the new software version by tapping on the
Help icon
on the instrument's screen, then select About.
To continue the measurement, press the Start pushbutton.
Note: If you have set up your instrument for e-mail notifications (see section 8.4), then you
will get an e-mail in step 4), when the analyzer is paused, and you will get a new email in
step 5), when the analyzer has rebooted and is ready for connection again.
Fig.9.1
About screen - Showing
the ‘Check for updates
on the Web’ link
Fig.9.2
Software update screen Showing the ‘Check for
Updates’ button
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9.2.3
Downgrade to an Earlier Version
It is possible to downgrade to an earlier version of the software:
1) Within the server address (see Fig.9.2) change the text “latest” to the desired software
package, e.g., “SW22.”
2) Press Check for updates.
3) Follow the procedure described in section 9.2.1 or section 9.2.2.
Note: Only the software package SW24 or newer can be downgraded to another package.
Software packages down to SW21 are available for update through the Internet.
9.3
Troubleshooting
9.3.1
Measurements
If your measurement seems to be wrong, then:
9.3.2
•
Check the cabling, if any
•
Check that the microphone, including preamplifier, is correctly mounted in the top socket
(or correctly connected to the extension cable)
•
Check that the transducer you have mounted on your analyzer is selected as the
Transducer Used parameter, this is also found in the Setup menu
•
Check whether the parameters for the selected transducer (Transducer Used) are set
correctly, especially the Microphone Type parameter. This is found by tapping the Main
Menu icon
, then Transducers
•
Check that the Sound Field and Windscreen Correction parameters have been set correctly.
These are found by tapping the Main Menu icon
, then Setup > Input
•
Check if the calibration is OK (make a new calibration using an external calibrator)
SD/CF Cards and USB Sticks
The Logging and Signal Recording software requires that measurements are saved on memory
cards – SD or (with hardware versions 1 – 3) CF. A USB memory stick can be used from
hardware version 4.
Device Format and Speed
In order to ensure reliable operation with the memory device, the format of the file system and
the speed of the device are tested. Upon insertion, the analyzer verifies the format of the
memory device’s file system. If the file system is not optimal for usage with the analyzer, then
you are prompted to format it. You will be guided through the process.
When the format of the file system has been accepted, then the speed of the device is tested.
The test writes data to the device and measures the writing speed. The test takes less than a
minute. If the speed test is successful, then you can proceed using the device, otherwise you
should use another memory device or try reformatting the device (if not done already).
CHAPTER 9
Updating, Maintenance and Troubleshooting
Problems with Storing or Recalling Data
If you experience problems in storing or recalling data on memory devices, you can check and
repair the integrity of the file system on the device or even re-format it, by doing the following:
1) Insert the memory device in the correct slot of the connector panel of the analyzer.
2) You will be notified that a device has been inserted – select Yes to change the default
measurement path to it.
3) Tap the Main Menu icon
, then Explorer.
4) Tap on the
icon to go up folder levels until you have reached the topmost level with a
list of the available memory devices.
5) Tap on the name of the device (not the icon) to get a list of available commands.
6) Select Check and Repair to start the procedure. If any errors are found in the file system,
they are fixed. When finished, you will be informed whether the device was OK or that
errors have been fixed.
Note: The checking procedure can take several minutes, depending on the size of the
memory device.
Formatting a memory device:
7) Select Format to start the formatting procedure.
WARNING: All data on the device will be erased during the formatting process.
WARNING: Do not remove the device or switch off the instrument during the procedure –
this might damage the file system and data, and make it unusable.
Note: The read/write performance of memory cards and USB memory sticks varies a lot. The
performance depends on the manufacturer of the device, the type of device, its size, how
much it has been used, how fragmented the memory is, and even the day of production. Two
‘identical’ devices can have a different performance because the manufacturer has
changed the internal technology without notice.
In general, as a rule of thumb, you should select memory devices aimed for the industrial
or professional photographer market.
The cards delivered by Brüel & Kjær have all been tested for their read/write performance
in an analyzer and can be used for the applications available in an analyzer. If you need
more (or other) types of memory devices, please consult your local Brüel & Kjær representative.
Remember to regularly re-format the device (especially before a long unattended
measurement) – this will ensure the best performance.
8) Select Test Speed, if you want to check the device’s file speed.
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9.3.3
Battery Pack and Recalibration of Battery Charge Indicator
The software keeps the capacity of the battery pack updated. Over time the total capacity of the
battery pack decreases. If you find that the ‘Time Remaining’ estimate (tap on the battery icon
to get this information) does not match the real time remaining (for example, the
instrument switches off automatically because of lack of power while the Time Remaining
estimate indicates at least ½ hour), then you should manually re-calibrate the capacity of the
battery pack. This is done using the following method:
•
•
Drain all the power from the battery:
–
Switch the instrument on
–
Disconnect external power
–
Disconnect the instrument from the PC
–
In the Preferences menu, under Power Settings, set Standby After to Never
–
You may want to set Backlight On to Always (in the same menu) and select the
maximum level of display backlight in order to drain the battery faster (use the
Backlight icon
at the bottom of the screen)
–
Leave the instrument until the battery voltage becomes so low that the analyzer
switches itself off
Charge the battery fully (at least 10 hours):
–
Connect the Mains Power Supply ZG-0426 (or ZG-0429) to the analyzer
–
Switch the instrument on (and leave it on) and remember to reset the Standby After
and Backlight On to your preferred settings
Tap the battery icon
and a pop-up appears, giving details of the battery condition. This
will indicate Calibrating Battery initially. Let the battery charge until the battery charge
indicator just below the power socket starts flashing green (hardware versions 1–3) or changes
from red to green (hardware version 4) and the Calibrating Battery indication has disappeared
from the pop-up window.
9.3.4
Touch Screen
If tapping with the stylus on the screen seems to be getting more inaccurate, you can adjust the
touch sensitive screen, as follows:
•
In the Preferences menu, under Display Settings activate the link Adjust Touch Screen.
This displays a full screen with guidance on how to tap on a cross five times at different
places on the screen. The adjustment procedure ends with saving the values or cancelling
the adjustment
CHAPTER 9
Updating, Maintenance and Troubleshooting
9.3.5
Reset Options
Reset Button
WARNING:Unsaved data or setups will be lost when you reset the instrument.
If your analyzer stops responding to pushbutton presses, or stylus taps, you can:
•
Reset and reboot the instrument by pressing the reset button (located on the connector
panel – see in Chapter 2) with the point of the stylus
If you still experience problems, try resetting your analyzer as described below.
Instrument Reset
1) Reset the analyzer to a default/factory installed state.
–
For hardware versions 1 – 3, you will reset the analyzer to a default state, where the
user is set to 2250 Light and the project template is set to Sound Level Meter. The
existing Sound Level Meter project template will be overwritten, as will the
preferences for the user. To reset the analyzer to the default state:
a) Press and hold the Power-on pushbutton for at least five seconds (powers off).
b) Press and hold down the Manual Event 2
and Save
pushbuttons while
switching on the analyzer. The display in Fig.9.3 will be shown.
Fig.9.3
Maintenance Mode
–initial screen
Within a few seconds the display in Fig.9.4 will be shown.
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Fig.9.4
Update 2250 Light
software screen
c) Cancel the update by pressing any other pushbutton than the Accept pushbutton
.
Fig.9.5
Reset to default settings
screen
d) Press the Accept pushbutton
–
to reset to default settings.
With hardware version 4 (G4), the analyzer contains two sets of the
firmware/software package and settings. The one originally delivered with the
analyzer and one installed afterwards. To restore the factory firmware/software
package and settings:
a) Press and hold the Power-on pushbutton for at least five seconds (powers off).
b) Press and hold down the Manual Event 2
and Save
pushbuttons while
switching on the analyzer. The display in Fig.9.6 will be shown.
CHAPTER 9
Updating, Maintenance and Troubleshooting
Fig.9.6
Restore factory firmware
and settings on hardware
version 4
c) Press the Accept pushbutton
to restore factory firmware and settings.
2) (all hardware versions) If the instrument now functions normally, define your preferred
settings in the Preferences menu, adjust the touch screen again and make necessary
changes to Setup (all accessed via the Main Menu
icon).
If you experience problems selecting another template or you login as another user, then note
which step causes the problem. You might need to delete/reconfigure the templates or users.
To delete/reconfigure templates or users, use Measurement Partner Suite BZ-5503 with the
analyzer connected to the PC via Micro USB Cable AO-1494 (G4 hardware) or Mini USB
Cable AO-1476, or a modem/LAN connection. Please consult the on-line help included with
the BZ-5503 software for instructions on how to configure the analyzer.
Re-installing Software (Hardware Versions 1 – 3)
If the instrument still does not work normally after performing the ‘Reset to Default Settings’
procedure, then the software might need to be re-installed. This can be done in two ways:
1) If the connection to Measurement Partner Suite BZ-5503 works with the instrument
connected to the PC using a USB cable, then the software can be re-installed and reconfigured through the USB cable. Please consult the on-line help included with the
BZ-5503 software for instructions on how to re-install software on the analyzer.
2) If the connection to the PC does not work, then you need a Compact Flash card (size at
least 64 Mbytes) and a Compact Flash card reader for the PC. You can then use
Measurement Partner Suite BZ-5503 to update the Compact Flash card with the necessary
files. Please consult the on-line help included with the BZ-5503 software for instructions
on how to update a Compact Flash card with installation files for the analyzer.
Power off the analyzer and insert the compact flash card in the CF slot on the instrument.
Then press and hold down the Manual Event 2
and Save
pushbuttons while
switching on the instrument. The Maintenance Mode initial screen will be displayed, and
then within a few seconds the screen shown in Fig.9.4 will appear.
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Press the Accept pushbutton
5 minutes.
to update the software. This will take approximately
WARNING:Do not remove the CF-card while updating the software!
When the software has been updated, you will get the option of resetting to the default
settings.
If the problem still persists, then you should contact your local Brüel & Kjær representative.
9.4
Services at Brüel & Kjær for Type 2250 Light
9.4.1
Accredited Calibration
For Type 2250 Light, you can order accredited calibration and choose between DANAK,
A2LA, UKAS, Eichamt (Austria), RvA, ENAC, NATA and Inmetro.
For Spain, Primitiva is available.
The calibration will be performed in an ISO 17025 certified laboratory.
9.4.2
Initial Calibration
To start the measurement history from day one – if this is required, for example, for measurement
use in public, for customer audit or quality procedures – we recommend you order accredited
calibration together with the new instrument.
9.4.3
Regular Recalibration
To fulfil requirements for public measurements and to minimise the cost of errors due to faulty
or inaccurate measurements, we can arrange for calibration every year in an ISO 17025
certified laboratory at Brüel & Kjær. With annual data, you will have an unbroken history to
use as reference, either for internal requirements, for audit required by authorities or at the
request of your customers. And not least, you can follow the history of sensitivity for your
instruments over time.
9.4.4
9.4.5
Filter Calibration
•
You can order calibration of filters. Please specify at the time of ordering.
•
Calibration of filter response for octave and 1/3-octave filters according to IEC 61260.
Service and Repair
The hand-held analyzer is designed and constructed to provide many years of reliable
operation. However, if a fault occurs that impairs the analyzer’s correct function, then remove
the battery pack and disconnect any external power supply to prevent risk of further damage.
For more information about preventing faults or damage to your sound level meter, see
section 9.5.
CHAPTER 9
Updating, Maintenance and Troubleshooting
9.4.6
Hardware Maintenance and Repair
You can minimise the risk of unexpected costs by purchasing the hardware maintenance with a
five years warranty. Minor repairs, such as those resulting from damage caused by unauthorised
use of the instrument, can be performed at the same time as the instrument is being calibrated at
Brüel & Kjær. This will save you time. If any other errors are detected by the technician during
calibration, repair will be performed before returning the instrument to you.
Repair is available at a fixed price, which includes a Conformance Test Certificate upon the
return of your instrument (no measurement data included).
9.4.7
Rental
To ensure optimal uptime, you can rent a substitute Hand-held Analyzer* while yours is being
calibrated. To arrange rental, please contact your local Brüel & Kjær representative.
9.4.8
Training
Basic knowledge on sound and vibration measurement, instrument training and application
training are a few examples of what local training or consultancy hoursa can do for you. To find
out more about training and consultancy hours, please contact your local Brüel & Kjær
representative.
9.5
Care, Cleaning and Storage
Your analyzer is a robust instrument, however, when handling, storing or cleaning your instrument,
please take the following precautions.
9.5.1
Handling the Instrument
9.5.2
•
Do not try to remove the microphone grid as you can easily damage the microphone
•
Do not attempt to open the instrument. There are no user-serviceable parts inside. If you
think your instrument requires service, please contact your Brüel & Kjær representative
•
Do not allow the instrument to get wet
•
Protect the instrument from impact. Do not drop it. Transport it in the supplied carrying
pouch
Cleaning the Instrument
If the instrument casing becomes dirty, then wipe it with a lightly dampened cloth. Do not use
abrasive cleansers or solvents. Do not allow moisture to enter the microphone, connectors or
casing.
*.
Providing this service is available from your local Brüel & Kjær office
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Hand-held Analyzer 2250 Light – User Manual
90
9.5.3
Storing the Instrument
•
Keep the sound level meter in a dry place, preferably within its carrying pouch
•
For long-term storage, remove the battery pack
•
Do not exceed storage temperature limits of –25 to +70°C (–13 to +158°F)
91
Chapter 10
1/1- and 1/3-octave Frequency Analysis
(Optional Modules)
2250 Light has two optional Frequency Analysis modules, these are:
•
1/1-octave Frequency Analysis Software for 2250 Light BZ-7131 enables you to make
1/1-octave measurements and broadband sound level measurements simultaneously
•
1/3-octave Frequency Analysis Software for 2250 Light BZ-7132 enables you to make
1/3-octave measurements and broadband sound level measurements simultaneously
Check the About Menu to see whether you have the right license to run the frequency analyzer
you require. The About Menu is accessed from the built-in help – tap
on the shortcut bar,
then select About. See Chapter 9 for instructions on installing the license for the frequency
analyzer.
10.1
Setting up the Instrument
The frequency analyzer measures the following spectrum parameters during timed
measurements:
•
LXeq
•
LXFmax
•
LXSmax
•
LXFmin
•
LXSmin
where X is the frequency weighting A, B, C or Z.
These spectra are saved in the project together with the measured sound level meter (broadband)
parameters.
In addition, the instantaneous spectra LXF and LXS are always available.
1) Select the FREQUENCY ANALYZER 1/1-OCTAVE or FREQUENCY ANALYZER
1/3-OCTAVE Project Template. (See section 3.3.1 for more details on templates.) The
Project Template is displayed at the top of the screen, if it does not display FREQUENCY
Hand-held Analyzer 2250 Light – User Manual
92
ANALYZER 1/1-OCTAVE (or 1/3-OCTAVE), tap on the black bar at the top of the
screen and select FREQUENCY ANALYZER 1/1-OCTAVE (or 1/3-OCTAVE) from the
drop-down that appears.
2) Tap the Main Menu icon
and select Setup from the list of options. Set the Broadband and
Spectrum parameter to A, B, C or Z, as required. (A/B-weighting is determined by setting
the parameter in Setup > Frequency Settings > Broadband (excl. Peak)).
To exit the screen, tap
.
Fig.10.1
Setting the frequency
weighting parameters
Under the Signal Recording parameters, choose the settings for recording the signal while
making the measurement – see Chapter 12.
Under the Tone Assessment parameters, choose the settings for Tone Assessment – see
Chapter 13.
10.2
Controlling the Measurement
The measurement is controlled in the same way you would control a normal sound level meter
measurement, using Start/Pause , Continue , Back-erase
and Reset
pushbuttons,
see Chapter 3 for more details.
10.3
Displaying the Results
The frequency analyzer measurement screen includes three tabs at the bottom: Spectrum,
Broadband and XL View (Extra Large View). The tabs allow you to choose different ways of
displaying the measurement results. All but the Spectrum tab have been covered previously in
Chapter 3, however, a quick recap is provided below.
CHAPTER 10
1/1- and 1/3-octave Frequency Analysis (Optional Modules)
93
The Broadband view shows an instantaneous LAF readout, with associated bar graph and four
measurement parameters, followed by two measurement setup parameters. (The first
measurement parameter is displayed in a larger font size for better readability.)
The XL View increases the size of the first parameter readout to a 4 digit, full-screen display
(including decimal point).
The Spectrum view (which only appears as a tab if 1/1-octave or 1/3-octave Frequency
Analysis Software for 2250 Light BZ-7131/32, is enabled), shows two different spectra being
measured simultaneously. In the example in Fig.10.2, LZFmax and LZF are being viewed at the
same time.
Note the
and
icons, indicating which spectrum belongs to which parameter.
1) Select which spectra to view by tapping the parameter fields in the two lines above the
spectrum display.
These lines also include readouts of the spectrum values highlighted by the spectrum
cursor. Tap on the spectrum at the frequency of interest – or just tap anywhere in the
spectrum area and then move the cursor to the position of interest using the left
and
right
arrow pushbuttons.
To the right of the spectrum, two broadband bars (of the same parameters) are also
displayed.
Fig.10.2
Displaying the results
– spectrum screen
2) Adjust the X-axis (the horizontal frequency axis below the graphical display) by tapping
on the scale and accessing the drop-down menu, see Fig.10.3.
–
use Set Lower Display Limit to set the lower frequency limit of the X-axis
–
use Set Higher Display Limit to set the upper frequency limit of the X-axis
–
use Reset Display Range to display all measured frequency bands
Note: These settings only affect the frequency range of the display of measured data, not
the frequency range of the measurement itself.
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Hand-held Analyzer 2250 Light – User Manual
Fig.10.3
Adjusting the X-axis
3) Scale the Y-axis (left-hand vertical scale of the graphical display) by tapping on the scale
and accessing the drop-down menu, see Fig.10.4. (You can also select the spectrum cursor
and press the Accept
pushbutton.)
Fig.10.4
Scaling the Y-axis on the
Spectrum display
Select Auto Zoom to adjust the range of the Y-axis for best fit of the measured spectrum.
Select Zoom In/Zoom Out to adjust the zoom.
Select Scale Up/Scale Down to adjust the full scale value on the Y-axis – or select Auto
Scale to select the best scaling for viewing the spectra – without adjusting the zoom.
Auto Zoom and Auto Scale automatically close the drop-down menu, otherwise, select
Close, tap outside the drop-down list or use the left arrow
pushbutton to close the
menu.
Hint: a quick way of auto zooming is to tap anywhere in the spectrum and then press the
Accept
pushbutton twice.
CHAPTER 10
1/1- and 1/3-octave Frequency Analysis (Optional Modules)
95
Spectrum Table shows the displayed part of the spectrum in tabular form – as in Fig.10.5.
at the top of the screen to select between two different
Press the Table Format icon
viewing formats:
–
Two Parameters: for displaying values from both spectra
–
One Parameter (wrap): for displaying values from the main spectrum only, but with
the columns wrapped on the display to allow as many values as possible on the screen
Fig.10.5
Spectrum table
To exit the Spectrum Table, tap
.
Note: Save the template, if you want to use the display settings for other measurements.
Some parameters are calculated based on the spectra:
•
SIL, PSIL, SIL3 and LXeq(f1–f2) are calculated during the measurement and saved
together with the other measurement data
•
The Noise Parameters NC, NR, RC, NCB, Loudness and Loudness Level are for display
only and calculated based on measured LXeq spectra. This means that whenever you have a
LXeq spectrum you can also calculate and display these parameters
•
NC, NR, RC and NCB are defined for 1/1-octave LZeq spectra, however, NC, NR, RC and
NCB are calculated for any frequency weighting and any octave bandwidth. A-, B- and
C-weighted spectra are converted to Z-weighted spectra and 1/3-octave spectra are
converted to 1/1-octave spectra before the calculation
•
Loudness and Loudness Level are calculated for 1/3-octave spectra with any frequency
weighting. A-, B- and C-weighted spectra are converted to Z-weighted spectra before the
calculation
If 1/1-octave LZeq spectra have been measured, then you can display a Noise Curve together
with the LZeq spectrum, see example in Fig.10.6.
Hand-held Analyzer 2250 Light – User Manual
96
Fig.10.6
Displaying a Noise Curve
together with the LZeq
spectrum
For RC and NCB you also have the possibility of displaying the limit curves for Rumble and
Hiss, and for Rattle and Vibration together with the 1/1-octave LZeq spectrum.
10.3.1
Smileys
A smiley will be shown to the right of the project name if there are any issues with calculating
Noise Parameters, or displaying noise curves, see the overview in Table 10.1.
Table 10.1 Overview of Smileys
Smiley
10.4
Explanation
Description
No Loudness for 1/1-octaves
Select 1/3-octave
No Leq parameter logged
Select a Leq spectrum for logging
Sound Field Mismatch for Loudness
Set the Loudness parameter in Input in
accordance with the Sound Field Correction
Frequency bands outside Noise Curves
Levels are lower or higher than any noise curve
band
Noise Curves require use of Mic.
Select a microphone
Display Noise Curve with LZeq
Noise parameters are calculated but Noise
Curves can only be displayed together with LZeq
Noise Curve for 1/1-octaves only
Noise parameters are calculated but Noise
Curves can only be displayed for 1/1-octaves
Saving Results
Measurements are saved and can be viewed later, in the same way as described for the Sound
Level Meter Project in Chapter 3.
97
Chapter 11
Logging (Optional Module)
Logging Software for 2250 Light BZ-7133 enables you to measure and save data periodically on
SD or CF cards. You can also save to a USB memory stick with hardware version 4. The
module is optimised for attended use, which means that while measuring you can ‘mark’ up to
five different sound categories online.
The main benefit is that data is documented on-site and is therefore ready for post-processing and
reporting back at the office using Measurement Partner Suite BZ-5503 or other post-processing
software such as Evaluator Type 7820, Protector Type 7825 or Microsoft® Excel®.
In addition to measuring broadband parameters (see Chapter 3) and spectra* (see Chapter 10),
the logging module allows you to simultaneously log the following parameters:
•
Broadband Parameters (including broadband statistics)
•
Spectra*
•
Broadband Parameters every 100 ms
•
Record the measured signal†
An overview showing the options available during a typical logging task has been provided in
Table 11.1.
Table 11.1 Overview of options available during a typical logging task
Selection
Logged
Logged
(100 ms)
Total
*.
†.
Period
Broadband
Parameters
Broadband
Statistics
Spectral
Parameters
1 s – 24 h
1 to 10
or All (45)
None
or Full
0–3
or All (5)
100 ms
None,
LAeq, LAF and/or LAS
None
available
None
available
Elapsed
Time
All (58)
Full
All (5)
Requires 1/1- or 1/3-octave Frequency Analysis Software for 2250 Light BZ-7131/32
Requires Signal Recording Option BZ-7226
Hand-held Analyzer 2250 Light – User Manual
98
Check the About menu to see whether you have the license to run the Logging module. (The
About Menu is accessed from built-in help – tap
on the shortcut bar, then select About.) See
Chapter 9 for instructions on installing the license for the Logging Module.
11.1
Setting up the Instrument
1) Select the LOGGING 1/1-OCTAVE, LOGGING 1/3-OCTAVE or LOGGING SLM
Project Template. (section 3.3.1 for more details on templates.) The Project Template is
displayed on the black banner at the top of the screen. If this banner does not display
LOGGING 1/1-OCTAVE, LOGGING 1/3-OCTAVE or LOGGING SLM, tap the
banner and select one of the above from the drop-down that appears.
Note: The Logging Project Template assumes you have a license for the Frequency
Analysis Software. If not, then select the LOGGING SLM Project template instead.
2) Depending on your memory device:
•
Insert an SD memory card in a SD card slot at the bottom of the analyzer
•
If you have hardware versions 1 – 3, you can insert a CF memory card in the CF card
slot at the bottom of the analyzer
•
With hardware version 4, you can insert a USB Type A stick at the bottom of the
analyzer
You will be notified that a memory card has been inserted – select Yes to change the
default measurement path to the memory card.
3) Tap the Main Menu icon
and select Explorer from the list of options. Create a job
folder for the measurements and set the default measurement job/path as described in
Chapter 6.
Note: You cannot log data on the internal disk.
4) Tap the Main Menu icon
and select Setup from the list of options. The Setup screen
will appear, see Fig.11.1. Set the Input, Frequency Settings and Statistics parameters as
required for the Sound Level Meter and Frequency Analyzer‡ measurement, see Chapter 3
and Chapter 10 respectively. These settings are common to both the logging and the total
measurement.
‡.
Requires 1/1- or 1/3-octave Frequency Analysis Software for 2250 Light BZ-7131/32
CHAPTER 11
Logging (Optional Module)
99
Fig.11.1
The Setup screen
5) Under the Measurement Control parameters, set the Preset Logging Time and Logging
Period as required. Set Synchronize with clock to Yes if you want the logging to
synchronise with whole minutes or hours. For example, if Logging Period is set to
1 minute and you start the measurement at 8:12:33, then the first logging interval will be
from 8:12:33 to 8:12:59 (27 seconds), the second will be from 8:13:00 to 8:13:59
(60 seconds), etc. Set Synchronize with clock to No if you want every logging interval to
be the specified Logging Period exactly. Set Charge Injection Calibration to On, if you
want to validate the complete measurement chain by performing CIC at the start and end of
the logging measurement, refer to section 5.7.
6) Under the Logged Broadband parameters, choose which broadband parameters you want
to log in accordance with the Measurement Control parameters. You can choose to log Full
Statistics per Logging Period or not. You can also choose to log all the measured Broadband
Parameters or a Selected number of parameters. If you choose Selected then you can
specify up to 10 parameters.
7) The Logged Broadband (100 ms) parameter allows you to log LAeq (with an elapsed time
of 100 ms and a logging period of 100 ms), LAF and/or LAS (with a logging period of
100 ms) irrespective of the other logging parameters.
8) The Logged Spectrum** parameter allows you to choose which spectra to log. You can
specify to log All, None or up to 3 Selected spectra.
9) Under Markers you can specify the names of the five available markers. The markers are
predefined as follows:
•
Marker 1: ‘Exclude’ – controlled by pressing the Back-erase pushbutton
•
Marker 2: ‘Event 1’ – controlled by pressing the Manual Event 1 pushbutton
•
Marker 3: ‘Event 2’ – controlled by pressing the second Manual Event 2 pushbutton
•
Marker 4: ‘Marker 4’
•
Marker 5: ‘Marker 5’
**. Requires 1/1- or 1/3-octave Frequency Analysis Software for 2250 Light BZ-7131/32
Hand-held Analyzer 2250 Light – User Manual
100
All markers can be controlled by the stylus in the Profile display.
You can set a Pre-marker Time between 0 and 5 seconds. This will start markers 1, 2 or
3 the set number of pre-marker seconds before the point where the Back-erase pushbutton
or the Manual Event pushbuttons are pressed. See section 11.3.2.
10) If you have a license for Signal Recording Option BZ-7226, you can define the settings for
recording the signal while logging under the Signal Recording parameters. See Chapter 12
for more information.
11) If you have a license for Tone Assessment Option BZ-7231, you can define its settings
under the Tone Assessment parameters. See Chapter 13 for more information.
11.2
Controlling the Measurement
The measurement is controlled in the same way you would control a normal Sound Level
Meter measurement, using Start/Pause
, Continue
, Back-erase
and Reset
pushbuttons, see 3 for more details.
If you have set the Charge Injection Calibration parameter to On, then CIC is performed at the
start of the measurement and at the end of the measurement. An Exclude marker is set on the
logging profile at the point where the CIC is being performed. The update of the Total
parameters is stopped while the CIC is being performed. You can see the results of the CIC
under Total parameters, CIC Result 1 and CIC Result 2.
Recording the Signal
If you have a license for Signal Recording Option BZ-7226, you can record the input signal
during the measurement by pressing the Manual Event 1
or Manual Event 2
pushbutton (adds a Manual Event marker) or the Back-erase pushbutton
(adds an Exclude
marker), or you can record the signal throughout the entire measurement – depending on the
Signal Recording setting in the Setup. Details in Chapter 12.
11.3
Displaying the Results
The Logging measurement screen (or Profile View) includes three tabs at the bottom: Profile,
Spectrum and Broadband View (the Logging SLM includes the tabs: Profile, Broadband and
XL View). The tabs allow you to choose different ways of displaying the measurement results.
All but the Profile tab have been covered previously in Chapters 3 and 10, however a quick
recap is provided below.
The Broadband view shows an instantaneous LAF readout, with associated bar graph and a
number of measurement parameters. (The first measurement parameter is displayed in a larger
font size for better readability.)
The XL View increases the size of the first parameter readout to a 4 digit, full-screen display
(including decimal point).
The Spectrum view shows two different spectra parameters being measured simultaneously.
CHAPTER 11
Logging (Optional Module)
11.3.1
101
The Profile View
The Profile view displays a profile of a logged broadband parameter (dB versus time). This is
very convenient when marking sound categories on-line or annotating the measurement. See
Fig.11.2.
Fig.11.2
Profile View (showing
extended status field)
Status Field
The Status Field has been extended to include an extra line of information below the two
existing lines of information covered previously in the Sound Level Meter and Frequency
Analyzer (see Fig.11.2).
This extra line of information allows you to:
•
Select whether the results of the Total measurement from the Logged measurement, or from
the Logged(100 ms) measurement are displayed. Select Total to display the measurement
parameters of the Total measurement in all the views – the Broadband and Spectrum views
will then display parameters or spectra similar to the Sound Level Meter or Frequency
Analyzer. (The Profile View will be empty, because the Total measurement contains only a
single set of parameters). Select Logged to display the measurement parameters from the
logging intervals. The cursor in the profile selects which logging interval is displayed in all
the views. Select Logged(100 ms) to display the LAeq, LAF or LAS in the profile from the
100 ms logging intervals. This setting does not display spectra or parameters in other views
•
View the start time of the measurement (for Total) or the start time of the current logging
interval (for Logged or Logged(100 ms) if measuring and the profile is not frozen) or the
start time of the logging interval pointed out by the cursor. Tap on the start time in any of
the views to select data from another logging interval
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Hand-held Analyzer 2250 Light – User Manual
•
View whether the display of the profile during the measurement is frozen or not. When
is “animated” the display is being updated with new logged data during the measurement. You can freeze the display update by tapping on the icon. This also freezes the icon.
Tap on the icon again to unfreeze the display
•
Step forwards or backwards through the logging intervals on all displays, using
and
. (The icons are also connected to the profile cursor, so that any corresponding movement backwards or forwards through the intervals in one display will be reproduced in the
other)
Some interaction with the display will automatically freeze and unfreeze the display (only
while measuring):
•
Tap the stylus on the profile. This will set the profile cursor and freeze the display update
of the profile. You can move the cursor to any point in the profile by using the left and
right arrow pushbuttons. The profile will be scrolled automatically, if necessary. Unfreeze
by tapping on
•
Tap and hold the stylus on the profile display and drag it to the left or right. This will
freeze the display and show two cursors. Next, remove the stylus from the display and a
drop-down menu appears with the possibility of setting or editing a marker or annotation
(see below). Select the required function from the drop-down menu. When the function
has been carried out, the profile unfreezes automatically and progresses as it did before
you tapped on the screen
The logged data are displayed as two profiles. The Profile Overview with the entire profile and
the Profile with 100 logging samples.
The Profile Overview
An overview of the entire profile is displayed across the screen on the topmost part of the graph
area.
The overview is based on LXeq,1s (X = A or B depending on the Broadband (excl. Peak)
Frequency Settings parameter). The Y-axis is auto-zoomed.
When you have logged for more than 4 minutes, then each pixel on the X-axis will cover more
than 1 s. The overview will then display from the minimum LXeq,1s to the maximum LXeq,1s
within the interval covered by the pixels on the X-axis.
Tap in the Profile Overview to select the part of the entire profile to display in the Profile
below.
The Profile
The Profile displays a hundred samples of the logged data.
Select which parameter to view by tapping the parameter field in the line above the profile.
Markers are displayed between the profile and the profile parameter. Marker 1 (Exclude) is the
topmost positioned marker. The name of the marker is displayed if the marker overlaps the
cursor position. If a signal has been recorded, then a Sound marker (Marker 6) is displayed
above the profile – the marker covers the exact time of the signal recording.
CHAPTER 11
Logging (Optional Module)
You can browse through markers using the
103
buttons in the profile.
The whole, or any part of the signal recording can be played back, once or repetitively – see
Chapter 12 for details.
To the right of the profile, the broadband parameter LAF is displayed and updated regardless of
the measurement status and the display freeze status.
Scale the Y-axis (left-hand vertical scale of the graphical display) by tapping on the scale and
accessing the drop-down menu (as in the Spectrum display):
11.3.2
•
Select Auto Zoom to adjust the range of the Y-axis for best fit of the measured spectrum
•
Select Zoom In/Zoom Out to adjust the zoom
•
Select Scale Up/Scale Down to adjust the full scale value on the Y-axis – or select Auto
Scale to select the best scaling for viewing the spectra – without adjusting the zoom
•
Auto Zoom and Auto Scale automatically close the drop-down menu, otherwise, select
Close, tap outside the drop-down list or use the left arrow pushbutton to close the menu
Marking Sound Categories
Use this facility to categorise the sound while you are measuring, or while you are observing the
different kinds of sound on the display. This will make it much easier to do the post-processing
and reporting back in the office.
You can mark up to five sound categories on-line. The markers are displayed as horizontal lines
above the sound profile, see Fig.11.2. There are two main types of marker:
•
An Exclude Marker – this allows you to mark a sound you want to exclude from your
measurement later during post-processing or reporting. (It does not remove any data from
your measurement)
•
An Event Marker – this allows you to mark a particular sound of interest during your
measurement
On 2250 Light, Marker 1 is used as an Exclude Marker, while Markers 2 to 5 are used as Event
Markers. All four event markers can be user-defined. You can define a marker by tapping on
the Main Menu icon
and selecting Setup > Markers.
Marker 2 is set to a ‘Manual Event 1’ marker by default – it can be controlled by the Manual
Event 1
pushbutton and the stylus.
Marker 3 is set to a ‘Manual Event 2’ marker by default – it can be controlled by the Manual
Event 2
pushbutton and the stylus.
Marker 6 is used as a ‘Sound’ marker and shows the size of the signal recording.
The analyzer allows you to view the markers at a later date by recalling the data and viewing
the desired profile. (This can also be done if you have transferred the data to BZ-5503).
Hand-held Analyzer 2250 Light – User Manual
104
If required, Measurement Partner Suite BZ-5503, Evaluator Type 7820 and Protector Type 7825
can use the markers in their calculations. Marker number 1 (the Exclude marker) will always be
used as an Exclude marker, while markers 2 to 5 will be used as defined in Type 7820/7825
software. The marker names, however, will be transferred from 2250 Light. Marker 6 will be
used as a sound marker.
Marking During the Measurement
The measurement parameter is displayed as a progressing profile.
Use of pushbuttons:
Press the Back-erase
pushbutton to start an Exclude Marker (marker number 1). The
marker is displayed above the profile. Press the button once more to stop the Exclude Marker.
Press the Manual Event pushbutton (either
or
) to start a Manual Event Marker (marker
number 2 or 3). The marker is displayed above the profile. Press the button once more to stop
the Manual Event Marker.
Use of stylus:
Tap and hold the stylus on the profile display at the position where you want the marker to
start. This will freeze the display and show a cursor at the position of the stylus. Then drag the
stylus left or right to the position where you want the marker to end. This will display a second
cursor. Next, remove the stylus from the display and a drop-down menu appears showing the
five markers you have specified in the setup. Select the marker you require. The marker is
displayed above the profile, the cursors disappear and the profile unfreezes and progresses as it
did before you tapped on the screen.
Marking Measurement While it is Paused
The measurement parameter is displayed as a profile while the measurement is paused.
You can use the stylus to mark the sound categories:
Tap and hold the stylus in the profile display at the position where you want the marker to start.
This will display a cursor at the position of the stylus. Then drag the stylus left or right to the
position where you want the marker to end. This will display a second cursor. Next, remove the
stylus from the display and a drop-down menu appears showing the five markers you have
specified in the setup. Select the marker you require. The marker is displayed above the profile
and the cursors disappear.
11.3.3
Editing Markers on Profiles
To widen a marker:
1) Tap and hold the stylus on the profile display at a position within the marker range.
2) Drag the stylus left or right to the position where you want the marker to end.
3) Remove the stylus from the display and a drop-down menu appears.
4) Select the marker you want to widen from the drop-down menu.
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Logging (Optional Module)
105
To narrow a marker:
1) Tap and hold the stylus on the profile display at the position inside the marker range where
you want it to stop.
2) Drag the stylus left or right to a position outside the marker range.
3) Remove the stylus from the display and a drop-down menu appears.
4) Select Delete for the marker you want to narrow from the drop-down menu. The part
where the marker overlaps the gap between the two cursors will be deleted.
To delete a marker:
1) Tap and hold the stylus in the profile display at a position to the left of the marker you
want to delete.
2) Drag the stylus to a position to the right of the marker.
3) Remove the stylus from the display and a drop-down menu appears.
4) Select Delete for the marker you want to delete from the drop-down menu.
11.4
Saving and Recalling Results
Measurements are saved and can be viewed later, in the same way as described for the Sound
Level Meter Project in Chapters 3 and 6.
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107
Chapter 12
Signal Recording (Optional Module)
Signal Recording Option BZ-7226 allows you to record the input signal (typically sound) in
either 16-bit or 24-bit resolution during measurement. The signal recording can be controlled
manually or by using an external trigger signal. The recorded sound can be played back and
listened to using the optional Earphones HT-0015. Sound is recorded directly to a memory card.
With hardware version 4, sound can also be recorded to a USB memory stick.
The main benefit is that data is documented on-site and is therefore ready for post-processing
and reporting back at the office using Measurement Partner Suite BZ-5503 or other postprocessing software such as Evaluator Type 7820, Protector Type 7825 or Microsoft® Excel®.
Check the About menu to see whether you have the right license to run the Signal Recording
module. (The About menu is accessed from built-in help – tap
on the Shortcut Bar, then select
About.) See Chapter 9 for instructions on installing the license for the Signal Recording Module.
12.1
With Sound Level Meter and Frequency Analysis
Software
You can use the Signal Recording facility together with the Sound Level Meter Software and
the Frequency Analysis Software. You can record the sound for the whole measurement period
or you can record sound for controlled parts of the measurement. The recordings are attached
to the project as annotations, named “Soundrec N”, where N is the number of the recording for
the project. (section 3.5 and section 6.3.2 for a description of how to use annotations.)
Note 1: Signal recordings can only be done during measurements.
Note 2: Signal recordings can only be done on projects saved on memory cards (or with
hardware version 4, from a USB memory stick).
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12.1.1
Setting up the Analyzer
1) Select a Sound Level Meter project template or a Frequency Analyzer project template.
(see section 3.3.1 for more details on templates.)
2) Depending on your memory device:
•
Insert an SD memory card in a SD card slot at the bottom of the analyzer
•
If you have hardware versions 1 – 3, you can insert a CF memory card in the CF card
slot at the bottom of the analyzer
•
With hardware version 4, you can insert a USB Type A stick at the bottom of the
analyzer
Note: You cannot record the signal on the internal disk.
3) Tap the Main Menu icon
and select Explorer from the list of options. Navigate to
the memory card, create a job folder for the measurements and set the default
measurement job/path as described in Chapter 6.
4) Tap the Main Menu icon
and select Setup from the list of options. Set all the
parameters as required for the Sound Level Meter or Frequency Analyzer measurement,
see Chapter 3 and Chapter 10, respectively.
5) Under Signal Recording you can specify the Recording Control parameters as follows:
•
Automatic, if you want to start the recording when you start the measurement and stop
when you pause the measurement, and to limit the recording to Maximum Duration, if
Duration Limit is set to On
•
Manual Event, if you want to start and stop the recording using the Manual Event
pushbutton
during the measurement and to limit the duration of the recording, if
Duration Limit is set to On. In this case the recording will be at least Minimum
Duration long, but no longer than the Maximum Duration. Use Pre-recording Time
and Post-recording Time to specify how much extra you want to be recorded before
and after the event
•
External Event, if you want to start and stop the recording using an external trigger
signal, connected to the Trigger Input. See details in Appendix A
•
Off, if you do not want to record the signal
6) Set Recording Quality to High, Medium, Fair or Low in accordance with your needs.
Note, however, that high quality requires more disk space than low quality – details in
Appendix A.
7) Set Recorded Signal to either Input A/B-weighted, Input C-weighted or Input Z-weighted
(A/B-weighting is determined by setting the parameter in Setup > Frequency
Settings > Broadband (excl. Peak)). Input C-weighted is suitable for recordings used
afterwards to identify the sound source – it contains all the audible content of the signal,
but reduces the low-frequency noise from wind, etc.
8) Set Automatic Gain Control to On if you just want to listen to the signal afterwards. The
full 120 dB dynamic range (from max.input level and down) will be converted to 40 dB
and the signal is stored as a 16-bit WAV file.
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Set Automatic Gain Control to Off if you need to record calibrated signals or need to
analyze the wav-file afterwards on a PC. Select Resolution = 24 bit (recommended) to
cover the full 120 dB dynamic range (from max. input level and down) or select
Resolution = 16 bit and specify the Peak Recording Level.
9) Under Input you specify Trigger Input if you want to start the signal recording using an
external trigger signal. See details in Appendix A.
To exit the screen, tap
12.1.2
.
Controlling the Recording
The measurement is controlled in the same way you would control a normal Sound Level
Meter measurement, using Start/Pause, Continue, Reset and Save pushbuttons, see Chapter 3
for more details.
When the measurement signal is being recorded, the Recording icon
is displayed in the
Status Field. The recording is attached to the project as an annotation. The Annotations icon
is then displayed to indicate that the project has been annotated.
When Recording Control is set to Automatic, the recording will start when the measurement is
started and last for the Maximum Duration or the Elapsed Time, whichever is smallest. If you
continue a paused measurement, then a new recording is started.
When Recording Control is set to Manual Event, the recording will start the first time you press
the Manual Event pushbutton during the measurement, and stop the second time you press it;
if you press it a second time before the Minimum Duration has elapsed, then the recording will
continue until Minimum Duration has elapsed; if you press it a second time after Maximum
Duration has elapsed, then the recording has already been stopped when Maximum Duration
elapsed and the pushbutton will initiate a new recording instead.
When Recording Control is set to External Event, and Trigger Input is set to Voltage Level,
then recording is started when the voltage level is ‘high’ and stopped when voltage level is
‘low’ (details in Appendix A). Duration Limit has no effect on this setting.
If Pre-recording Time has been set, then the recording will start this time before you hit the
Manual Event pushbutton. This is possible because the recording is done continuously in an
internal buffer, ready to be saved as a wave file. The Pre-recording Time is limited by this
buffer size and the Recording Quality – details in Appendix A.
Note: Very long signal recordings will be split into wave files containing maximum 10
minutes, that is, a 35-minute signal recording will consist of 4 wave files, three with 10 minutes
of sound and one with 5 minutes of sound.
12.1.3
Playing the Recording
Signal recordings are attached to the measurement project as annotations. The Annotations
icon
is displayed in the Status Field to indicate this. Tap
to open the list of annotations.
With hardware version 4, you can tap the annotation to play it back – details in Chapter 3 and
Chapter 6.
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12.2
With Logging Software
You can use the Signal Recording facility together with the Logging Software. You can record
the sound for the whole measurement period or you can record sound for controlled parts of the
measurement. The recordings are attached to the profile as sound markers. The signal recordings
can be controlled by the Manual Event pushbuttons, the Back-erase pushbutton, or an external
trigger signal. You can also control the signal recording using the stylus to mark the interesting
part on the profile.
Note 1: Signal recordings can only be done during measurements.
Note 2: Signal recordings can only be done on projects saved on memory cards (or with
hardware version 4, from a USB memory stick).
12.2.1
Setting up the Analyzer
1) Select a Logging, 1/1 octave, Logging 1/3 octave, or Logging SLM project template. (see
section 3.3.1 for more details on templates.)
2) Depending on your memory device:
•
Insert an SD memory card in a SD card slot at the bottom of the analyzer
•
If you have hardware versions 1 – 3, you can insert a CF memory card in the CF card
slot at the bottom of the analyzer
•
With hardware version 4, you can insert a USB Type A stick at the bottom of the
analyzer
Note: You cannot record the signal on the internal disk.
3) Tap the Main Menu icon
and select Explorer from the list of options. Navigate to
the memory card, create a job folder for the measurements and set the default
measurement job/path as described in Chapter 6.
4) Tap the Main Menu icon
and select Setup from the list of options. Set all the parameters
as required for the Logging measurement, see Chapter 11.
5) Under Signal Recording you can specify the Recording Control parameters as follows:
•
Automatic, if you want to start the recording when you start the measurement and stop
when you pause the measurement, and to limit the recording to Maximum Duration, if
Duration Limit is set to On
•
Manual Event, if you want to start and stop the recording using the Manual Event 1
or Manual Event 2
pushbutton during the measurement
•
Exclude Event, if you want to start and stop the recording using the Back-erase
pushbutton
during the measurement
•
External Event, if you want to start and stop the recording using an external trigger
signal, connected to the Trigger Input
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Signal Recording (Optional Module)
•
111
All Events, if you want to start and stop the recording based on any of the events
Note: When Recording Control set to any of the events, you can limit the duration of
the recording, if Duration Limit is set to On. In this case the recording will be at least
Minimum Duration long, but no longer than the Maximum Duration. Use
Pre-recording Time and Post-recording Time to specify how much extra you want to
be recorded before and after the event
•
Off, if you do not want to record the signal
6) Set Recording Quality to High, Medium, Fair or Low in accordance with your needs,
note, however, that the high quality requires more disk space than low quality – details
in Appendix A.
7) Set Recorded Signal to either Input A/B-weighted, Input C-weighted or Input Z-weighted
(A/B-weighting is determined by setting the parameter in Setup > Frequency
Settings > Broadband (excl. Peak)). Input C-weighted is suitable for recordings used
afterwards to identify the sound source – it contains all the audible content of the signal,
but reduces the low-frequency noise from wind, etc.
8) Set Automatic Gain Control to On if you just want to listen to the signal afterwards. The
full 120 dB dynamic range (from max.input level and down) will be converted to 40 dB
and the signal is stored as a 16-bit wav-file.
Set Automatic Gain Control to Off if you need to record calibrated signals or need to
analyze the wav-file afterwards on a PC. Select Resolution = 24 bit (recommended) to
cover the full 120 dB dynamic range (from max. input level and down) or select
Resolution = 16 bit and specify the Peak Recording Level.
9) Under Input you specify Trigger Input if you want to start the recording using an
external trigger signal. See details in Appendix A.
To exit the screen, tap
12.2.2
.
Controlling the Recording
The measurement is controlled in the same way you would control a normal Sound Level
Meter measurement, using Start/Pause
, Continue
, Back-erase
and Reset
pushbuttons, see 3 for more details.
When the measurement signal is being recorded, then the Recording icon
is displayed in
the Status Field. The recording is attached to the profile as a Marker 6 (Sound).
If you set Recording Control to Automatic, the recording will start when the measurement is
started and last for Maximum Duration or Elapsed Time, whichever is smallest. If you continue
a paused measurement, then a new recording is started.
If you set Recording Control to Manual Event, the recording will start the first time you press
the Manual Event pushbutton during the measurement (this starts a Manual Event marker and
a Sound marker), and stop the second time you press it; if you press it a second time before
Minimum Duration has elapsed, then the recording will continue until Minimum Duration has
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elapsed; if you press it a second time after Maximum Duration has elapsed, then the recording
has already stopped when Maximum Duration elapsed, and the pressing the button will have no
effect on the signal recording (the Manual Event marker, however, is stopped).
If you set Recording Control to Exclude Event, the recording will start the first time you press
the Back-Erase pushbutton during the measurement (this starts an Exclude Event marker and a
Sound marker), and stop the second time you press it – the behaviour will be similar to control
by the Manual Event pushbutton.
When Recording Control is set to External Event, and Trigger Input is set to Voltage Level,
then recording is started when the voltage level is ‘high’ and stopped when voltage level is
‘low’ (details in Appendix A). Duration Limit has no effect on this setting.
If you set Recording Control to All Events, the recording will start when any of the events
above become active, and stop when all events are inactive again.
If Pre-recording Time has been set, then the recording will start this time before the Event
appears. This is possible because the recording is done continuously in an internal buffer, ready
to be saved as a wave file. The Pre-recording Time is limited by this buffer size and the
Recording Quality – details in Appendix A.
Note: Very long signal recordings will be split into wave files containing maximum 10
minutes, that is, a 35-minute signal recording will consist of 4 wave files, three with 10 minutes
of sound and one with 5 minutes of sound.
12.2.3
Control Recording using the Stylus
If Recording Control is set to any of the events, or to All Events, the recording can also be
controlled using the stylus directly on the profile, in the same way as you mark sound categories –
details in Chapter 11.
Fig.12.1
Example Logging display
(showing internal buffer
marker)
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113
The small triangle above the profile indicates the amount of sound you have in the internal
buffer – ready for storage in a wave-file. You will have sound from this triangle to the righthand side of the profile. The triangle is updated every second.
To make a signal recording using the stylus, you tap and hold the stylus on the profile display
and drag it to the position where the signal recording should end, then you remove the stylus
and get a drop-down menu with the possibility of setting one of the six markers. If you select
Sound, then a sound marker is made and the sound for the marked interval is stored in a wave
file. Only the portion of the sound available in the internal buffer (to the right of the small
triangle) will be stored and the sound marker will only indicate this part.
Note: When selecting an interval for storing (or setting a marker), the profile display freezes,
but the signal recording is still updated in the internal buffer. The part of the buffer available on
the screen will decrease and you will see the small triangle move to the right. Be sure not to
wait too long in selecting the Sound marker from the drop-down menu – otherwise the signal
recording will disappear from the internal buffer.
12.2.4
Playing the Recording*
With your G4 analyzer, you can playback the sound simply by selecting part of the marker – as
described in section 11.3.3 – and choose Play Sound from the resulting drop-down menu. The
following drop-down menu will then appear, see Fig.12.2.
Fig.12.2
Playing the recording –
the drop-down menu
Select one of the four ways of playing a sound: Selection will play the part you have selected;
Repeat Selection will play the selected part until you press Cancel on the pop-up menu; To End
will play the sound from the position you selected the sound marker to the end; and finally All
will play the entire signal recording, regardless of your selection point.
*.
Playback on the analyzer is available only with hardware version 4. If you have hardware versions 1 – 3,
you can play back recordings on a PC using Measurement Partner Suite BZ-5503. See section 12.2.5 for
more information.
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Fig.12.3
Playing the recording –
output level pop-up
When you have selected the method of play-back, a pop-up appears explaining how to adjust
the output level in the headphone and how to stop the play-back.
Tap the Minimize button to reduce this to a small blue bar at the top of the screen – allowing
you to watch the profile underneath – you will notice that the profile cursor is updated every
second to the position of the sound that is currently being played.
Fig.12.4
Playing the recording –
minimizing the pop-up
The small blue button bar at the top can be maximized again by tapping the
close it and stop playing back by tapping .
icon, or you can
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Signal Recording (Optional Module)
12.2.5
115
Signal Recordings on the PC
When projects including signal recording have been transferred into an Archive on a PC using
BZ-5503, then the recordings can be played back directly from BZ-5503.
Signal Recordings can be input to the Brüel & Kjær PULSE Multi-Analyzer platform for further
analysis – please contact your local Brüel & Kjær representative for further information.
Note: When recording signals for further analysis in PULSE, be sure to record the Z-weighted
signal and select Automatic Gain Control to Off under the Signal Recording parameters and
select the Recording Quality to match your needs for frequency content – see details on sampling
frequency in Appendix A.
When Automatic Gain Control is set to Off, then the calibration information is stored in the
wave files – allowing PULSE to analyse the signal recordings, taking the calibration into
account.
Note: Other sound players than BZ-5503 might not be able to amplify “24-bit per sample”
wav-files enough to hear weak sounds. If this is needed, then use 16-bit per sample.
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Chapter 13
Tone Assessment Option BZ-7231 –
1/3-octave Method
13.1
General
Tone Assessment Option BZ-7231 includes tone assessment according to the ISO standard. It
allows assessment of tones on-site.
The result of the tone assessment is the adjustment to be added to the LAeq as described in the
standard for calculating rating level.
BZ-7231, when used with 1/3-octave Frequency Analysis Software BZ-7132 and Logging
Software BZ-7133, allows you to:
•
Assess tones in a measured 1/3-octave spectrum according to ISO 1996:2007, Annex D
Tone Assessment Option BZ-7231 brings results to the user on-site as well as preparing for
post-processing and reporting back at the office. Documentation can be completed using
Measurement Partner Suite BZ-5503, or the measured data can be exported for post-processing
by Evaluator Type 7820 or other post-processing software such as Microsoft® Excel®.
Check the About menu to see whether you have the right license to run the Tone Assessment
Option. (The About menu is accessed from built-in help – tap the Help icon
on the Shortcut
Bar, then select About.)
If you have purchased your analyzer together with the software application(s), then the relevant
license(s) comes pre-installed.
If you purchased a separate software application for your analyzer, then you have to install the
license on the analyzer. This is done using BZ-5503, please consult the on-line help included
with the BZ-5503 software for instructions on how to install a license.
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13.2
Tone Assessment According to ISO 1996-2, Annex D
When assessing noise, it is generally recognised that noise containing audible pure tones is
more annoying than noise with the same A-weighted broadband level that does not contain
audible tones. When assessing noise that contains tones or narrow bands of noise, an
adjustment shall be added to the A-weighted time averaged level, LAeq. The first evaluation of
audible tones in noise is most often carried out by the human ear. But for comparative analysis
results, and documentation, an objective analysis may be needed.
Tone Assessment can be performed using the ISO 1996-2:2007 standard “Determination of
environmental noise levels”, Annex D: “Objective method for assessing the audibility of tones
in noise – Simplified method”. This method uses 1/3-octave measurements.
The selection of method depends on local legislation, which may refer to ISO 1996-2 or a
local method.
Find more information about rating level and assessment of environmental noise in ISO 1996-2
and in Brüel & Kjær’s Environmental Booklet.
13.2.1
ISO 1996-2, Annex D – Tone Assessment Calculations
The ISO method searches a measured, time averaged (Leq) spectrum, for level differences
between adjacent 1/3-octave bands. If the level difference between a 1/3-octave band and the
band either side of it are higher than a certain limit, an adjustment for audible tones may be
added to the LAeq level when calculating the rating level, Lr.
In ISO 1996-2, Annex D, the spectrum is divided into three frequency ranges: Low, Middle and
High. In each frequency range a specific limit for the level differences leading to an adjustment
is defined, see Fig.13.1.
Fig.13.1 Definition of frequency ranges and level differences
dB
16
Low
14
12
Level differences can be defined in Low, Middle
and High frequency range:
10
Proposed level
difference limits 8
for adjacent
bands [dB]
6
Middle
High
4
2
0
25 Hz
125 160
400 500
1/3 - octave bands [Hz]
10 kHz
080160
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Tone Assessment Option BZ-7231 – 1/3-octave Method
119
The proposed frequency ranges and level differences between adjacent bands are:
•
Low frequency range: includes the 1/3-octave bands from 25 Hz to 125 Hz with a level
difference for a detected tone greater than 15 dB
•
Middle frequency range: includes the 1/3-octave bands from 160 Hz to 400 Hz with a
level difference for a detected tone greater than 8 dB
•
High frequency range: includes the 1/3-octave bands from 500 Hz to 10 kHz with a level
difference for a detected tone greater than 5 dB
With BZ-7231 software, frequency ranges and the limit for the level differences in low, middle
and high range can be set by the user.
Tone assessment is carried out for all the measured frequency bands (including those below
25 Hz and above 10 kHz). The level difference limit is extrapolated from the low and high
range to cover the complete measurement range.
If tones are detected outside the 25 Hz to 10 kHz range, the quality indicator (yellow smiley)
indicates “Tone out of ISO range detected”.
ISO 1996-2, Annex D does not specify the size of the adjustment. In the default setting of
BZ-7231, Brüel & Kjær has chosen to set the value to 5 dB.
Calculating the Level Difference Between One Band and the Adjacent Bands
BZ-7231 software calculates the level difference between a 1/3-octave band and two adjacent
1/3-octave bands with lower levels. The difference is calculated between the band in the middle
and the highest of the adjacent bands.
13.3
Setting up the Analyzer
13.3.1
Selecting the Tone Assessment Option
Tap the Main Menu icon
then Setup from the list of options. Under the Tone Assessment
parameters (on the full list of options) tap Tone Assessment and set it to On (Fig.13.2).
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Fig.13.2
Setting Tone Assessment
option to On
13.3.2
Setting up a Measurement Manually
ISO 1996–2, Annex D
You can set the division between the Low and Middle frequency range, the division between
the Middle and High frequency range, and the limits for the level differences between adjacent
bands (Fig.13.3). (See Fig.13.1 for a definition of the frequency ranges and level differences.)
Fig.13.3
Left: Setting the ‘Low
Freq. Last Band’
parameter
Right: Setting the ‘Level
Difference Low’
parameter
You set the division between the Low/Middle frequency range by selecting the required value
for the Last (or highest) Band in the Low frequency range (from 12.5 Hz to 315 Hz), and set
the division between the Middle/High frequency range by selecting the required value for the
Last (or highest) Band in the Middle frequency range (from 160 Hz to 20 kHz).
The ISO method does not state which frequency weighting should be used, so in the default
setup, A-weighing is selected. However, this is not described in the ISO method, so no
warnings will be generated if you select other frequency weightings.
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Tone Assessment Option BZ-7231 – 1/3-octave Method
13.3.3
121
Setting up the Measurement using the Default Setup
Select the Tone parameter above the spectrum and start the measurement by pressing the
Start/Pause pushbutton
. If the selected setup parameters do not comply with the selected
tone assessment method, the following pop-up window will be displayed:
Fig.13.4
Pop-up window for tone
measurement setup
check
The pop-up window can be de-activated for the rest of the measurement session. To activate it
again, you will have to reload the template or restart your analyzer. This automatic check is
deactivated when the Tone Assessment parameter is set to Off in the Setup menu.
To reset all the relevant parameters to the default setup, tap the OK button. (The default setup
includes preset parameters that comply with the selected standard. These are described in Table
13.1.) To measure with the settings you set up manually, tap the Cancel button.
Table 13.1
Default parameters used
by the automatic
measurement setup
check
Setup Parameter
Default Value
Standard: ISO 1996-2, Annex D
Adjustment
3 dB
Last band in low frequency range
125 Hz
Last band in middle frequency range
400 Hz
Level difference low
15 dB
Level difference middle
8 dB
Level difference high
5 dB
Note: Even if you have set the Tone Assessment parameter to On (Setup menu), the calculation
is not carried out until the Tone parameter is selected above the spectrum.
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13.3.4
Signal Recording
If a valid license for the Signal Recording Option BZ-7226 is present, it is possible to record
the sound while measuring. (Refer to Chapter 12 for information about the Signal Recording
Option.)
Note: When signal recordings are to be used for re-analysis on a PC, be sure to set Automatic
Gain Control parameter to Off, under the Signal Recording parameters, and set the Recording
Quality parameter to High and Resolution to 24 bit.
13.4
Measuring
13.4.1
Result Display
Tone assessment is not performed until the Tone parameter is selected above the spectrum.
(This is done by tapping one of the parameter fields in the two lines above the Spectrum
display and choosing Tone from the drop-down menu.) Once selected, tone assessment is
carried out on the selected spectrum. The results are updated during the measurement.
Fig.13.5
Selecting the Tone
parameter above the
spectrum display
On the Results display, a blue marker is set at the top of each detected band with a tone.
Differences to the left and right of the frequency band selected by the main cursor are shown
(on the left and right) in the tone parameter panel above the spectrum, see Fig.13.6. The main
cursor is moved using either the hard keys or the stylus.
CHAPTER 13
Tone Assessment Option BZ-7231 – 1/3-octave Method
123
Fig.13.6
The differences to the left
and right of the selected
frequency band are
shown in the tone
parameter panel – in this
example, there is a
11.4 dB difference to the
left and a 3.9 dB
difference to the right
The information shown in the value panel can be changed by tapping in the field. From the tone
parameters, the adjustment and the selected tone standard can be selected. See Fig.13.7.
Results from the tone assessment can also be found by tapping on the Broadband tab and
browsing the Broadband view in a similar way.
Fig.13.7
Changing the information
shown in the value panel
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13.5
Logging Software BZ-7133 Template
The results from the tone assessment can be found in the Spectrum view of the Logging
template. Tone assessment is performed for each logging period, as well as for the total
measurement time, see Fig.13.8.
Fig.13.8
Viewing results on the
logging template
Please find more information about setting up a Logging measurement in Chapter 11.
13.6
Status Codes (Smileys)
When Tone is selected on the tone parameter panel, the list of status codes is updated. Tap a
smiley to get an explanation of the status code, and for a tip on how to remedy or improve the
settings on the analyzer, see an example in Fig. 13.9.
Fig.13.9
Example of a status code
explanation
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Tone Assessment Option BZ-7231 – 1/3-octave Method
125
If you have selected 1/1-octave or a Direct input, tone assessment will be performed, but a
smiley will be displayed. When you tap the smiley it will advise you to use a Microphone.
For an overview of all the remedies associated to the various smileys, please refer to Table 13.2
Table 13.2 Overview of smileys and associated remedies
Smiley
Colour
Explanation
Remedy – Tip for Solution
Red
No tone assessment on 1/1
octaves
There is no method for assessing tones when
the spectrum is analysed in 1/1-octave bands,
select 1/3-octave instead
Red
No tone assessment on inst.
parameters
It is not possible to make tone assessments on
instantaneous parameters (‘Fast’ or ‘Slow’)
Yellow
Analysis on ‘Direct’
The analysis is carried out on a ‘Direct’ input,
select a microphone
Yellow
Setup different from ISO
standard
The ISO is selected and the measurement setup
deviates from the proposals in the ISO standard
Yellow
Min or Max spectrum
When the ISO standard is selected the analyzed
spectrum should be Leq
Yellow
Tone freq outside proposed
ISO range
In the ISO standard the defined frequency range
for tone assessment is from 25 Hz to 10 kHz. A
tone is detected outside this frequency range
Note: The ISO method does not specify the weighting filter to be used. The A-weighting filter
is selected by default, but all selectable broadband filters may be applied without warnings.
13.7
Recalling Saved Measurements
Saved measurements using the Frequency Analyzer, 1/3 Oct. and Logging templates can be
opened and the Tone Assessment can be applied. Please refer to section 3.4 and section 6.3 for
information on how to save and recall measurements, respectively.
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Chapter 14
Specifications
This chapter comprises the specifications that are needed for evaluation of instrument
performance characteristics and proper use of the instrument. Some of the applicable sound
level meter standards require additional technical documentation, in particular for pattern evaluation (type approval) purposes, but have no bearing on normal use. The additional technical
documentation is given in a separate Brüel & Kjær manual.
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Hand-held Analyzer Type 2250-L (2250 Light) Platform
Specifications apply to 2250 Light fitted with Microphone Type 4950 and Microphone Preamplifier
ZC-0032:
Microphone
SUPPLIED MICROPHONE
Type 4950: Prepolarized Free-field ½ Microphone
Nominal Open-circuit Sensitivity: 50 mV/Pa (corresponding to 26 dB re 1 V/Pa) ±2 dB
Capacitance: 12.5 pF (at 250 Hz)
MICROPHONE PREAMPLIFIER ZC-0032
Nominal Preamplifier Attenuation: 0.3 dB
Connector: 10-pin LEMO
Extension Cables: Up to 100 m in length between the
microphone preamplifier and 2250 Light, without
degradation of the specifications
MICROPHONE POLARIZATION VOLTAGE
Selectable between 0 V and 200 V (hardware
version 4 only)
SELF-GENERATED NOISE LEVEL
Typical values at 23°C for nominal microphone opencircuit sensitivity:
Weighting
Microphone
Electrical
Total
A
14.0 dB
12.7 dB
16.4 dB
B
12.9 dB
11.9 dB
15.4 dB
C
13.0 dB
13.6 dB
16.3dB
Z
5 Hz–20 kHz
14.4 dB
19.3 dB
20.5 dB
Interface
KEYBOARD
Pushbuttons: 11 keys with backlight, optimised for
measurement control and screen navigation
ON-OFF BUTTON
Function: Press 1 s to turn on; press 1 s to enter
standby; press for more than 5 s to switch off
STATUS INDICATORS
LEDs: Red, amber and green
DISPLAY
Type: Transflective back-lit touch screen, 240  320
dot matrix
Black and white scheme
Backlight: Adjustable level and on-time
USER INTERFACE
Measurement Control: Using pushbuttons on
keyboard
Setup and Display of Results: Using stylus on touch
screen or pushbuttons on keyboard
Lock: Keyboard and touch screen can be locked and
unlocked
USB INTERFACE
Hardware Versions 1 to 3: USB 1.1 OTG Mini B
socket
Hardware Version 4: USB 2.0 OTG Micro AB and
USB 2.0 Standard A sockets
MODEM INTERFACE
Connection to Internet through GPRS/EDGE/HSPA
modem connected through:
• The Compact Flash slot (hardware versions 1 – 3)
• The USB Standard A Socket (hardware version 4)
Supports DynDNS for automatic update of IP address
of host name
PRINTER INTERFACE
PCL printers, Mobile Pro Spectrum thermal printer or
Seiko DPU S245/S445 thermal printers can be
connected to USB socket
Inputs/Outputs
COMPACT FLASH SOCKET (Hardware Versions 1
to 3 only)
Connection of CF memory card, CF modem, CF to
serial interface, CF Ethernet interface or CF WLAN
interface
SECURE DIGITAL SOCKET
• 1 × SD socket for hardware versions 1 – 3
• 2 × SD sockets for hardware version 4
Connect SD and SDHC memory cards
LAN INTERFACE SOCKET (Hardware Version 4
only)
• Connector: RJ 45 Auto-MDIX
• Speed: 100 Mbps
• Protocol: TCP/IP
TRIGGER SOCKET
Connector: Triaxial LEMO
Max. Input Voltage: ±20 Vpeak
Input Impedance: >47 kW
Precision: ±0.1 V
HEADPHONE SOCKET
Connector: 3.5 mm Minijack stereo socket
Max. Peak Output Level: ±1.4 V
Output Impedance: 32  in each channel
CHAPTER 14
Specifications
Power
EXTERNAL DC POWER SUPPLY REQUIREMENTS
Used to charge the battery pack in the instrument
Voltage: 8–24 V DC, ripple voltage <20 mV
Current Requirement: min. 1.5 A
Power Consumption: <2.5 W, without battery
charging, <10 W when charging
Cable Connector: LEMO Type FFA.00, positive at
centre pin
EXTERNAL AC MAIN SUPPLY ADAPTOR
Part No.: ZG-0426
Supply Voltage: 100 to 120/200 to 240 V AC; 47 to
63 Hz
Connector: 2-pin IEC 320
BATTERY PACK
Rechargeable Li-Ion battery
Part No.: QB-0061
Voltage: 3.7 V
Capacity: 5200 mAh nominal
Typical Operating Time: >10 h (screen backlight
dimmed); >7 h (full screen backlight)
Battery Cycle Life: >500 complete charge/discharge
cycles
Battery Indicator: Remaining battery capacity and
expected working time may be read out in % and time
Battery Fuel Gauge: The battery is equipped with a
built-in fuel gauge, which continuously measures and
stores the actual battery capacity in the battery unit
Charge Time: In instrument, typically 10 hours from
empty at ambient temperatures below 30°C. To protect
the battery, charging will be terminated completely at
ambient temperatures above 40°C. At 30 to 40°C
charging time will be prolonged. With External Charger
ZG-0444 (optional accessory), typically five hours
Note: It is not recommended to charge the battery at
temperatures below 0°C (32°F) or over 50°C (122°F).
Doing this will reduce battery lifetime
CLOCK
Back-up battery powered clock. Drift <0.45 s per
24-hour period
Storage
INTERNAL FLASH-RAM (NON-VOLATILE)
20 Mbyte for user setups and measurement data
EXTERNAL MEMORY CARD
Secure Digital (SD and SDHC) Card: For store/recall
of measurement data
Compact Flash (CF) Card: Hardware versions 1 – 3
only. For store/recall of measurement data
USB MEMORY STICK (Hardware Version 4 only)
For store/recall of measurement data
Environmental
WARM-UP TIME
From Power Off: <2 minutes
From Standby: <10 seconds
TEMPERATURE
IEC 60068–2–1 & IEC 60068–2–2: Environmental
Testing. Cold and Dry Heat
Operating Temperature: –10 to +50°C (14 to 122°F),
<0.1 dB
Storage Temperature: –25 to +70°C (–13 to +158°F)
HUMIDITY
IEC 60068–2–78: Damp Heat: 90% RH (noncondensing at 40°C (104°F))
Effect of Humidity: < 0.1 dB for 0% < RH < 90% (at
40°C (104°F) and 1 kHz)
MECHANICAL
Environmental Protection: IP 44
Non-operating:
• IEC 60068–2–6: Vibration: 0.3 mm, 20 m/s2,
10 – 500 Hz
• IEC 60068–2–27: Shock: 1000 m/s2
• IEC 60068–2–29: Bump: 4000 bumps at 400 m/s2
WEIGHT AND DIMENSIONS
650 g (23 oz.) including rechargeable battery
300  93  50 mm (11.8  3.7  1.9) including preamplifier and microphone
User Interface
LANGUAGE
User Interface in Catalan, Chinese (People’s Republic
of China), Chinese (Taiwan), Croatian, Czech, Danish,
English, Flemish, French, German, Hungarian,
Japanese, Italian, Korean, Polish, Portuguese,
Romanian, Russian, Serbian, Slovenian, Spanish,
Swedish, Turkish and Ukrainian
HELP
Concise context-sensitive help in English, French,
German, Italian, Japanese, Korean, Polish, Portuguese, Romanian, Serbian, Slovenian and Spanish
UPDATE OF SOFTWARE
Update to any version using BZ-5503 through USB or
update via Internet:
• Hardware versions 1 – 3: the latest version only
• Hardware version 4: any version from 4.0 and up
WEB PAGE
Connect to instrument via Internet browser supporting
JavaScript. The connection is password protected
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Hand-held Analyzer 2250 Light – User Manual
130
Two Levels of Protection:
• Guest level: for viewing only
• Administrator level: for viewing and full control of the
instrument
Software Specifications – Sound Level Meter Software for 2250 Light BZ-7130
Conforms with the following National and International
Standards:
• IEC 61672–1 (2013) Class 1
• IEC 60651 (1979) plus Amendment 1 (1993– 02)
and Amendment 2 (2000–10), Type 1
• IEC 60804 (2000–10 ), Type 1
• DIN 45657 (1997–07)
• ANSI S1.4–1983 plus ANSI S1.4 A–1985
Amendment, Type 1
• ANSI S1.43–1997, Type 1
Note: The International IEC Standards are adopted as
European standards by CENELEC. When this
happens, the letters IEC are replaced with EN and the
number is retained. 2250 Light also conforms to these
EN Standards
N = number between 0.1 and 99.9
For Storage: Full statistics
For Display and Storage:
Start Time
Stop Time
Elapsed Time
LXeq
LXE
LYE
LXSmax
LXFmax
LYSmax
LYFmax
LXSmin
LXFmin
LYSmin
LYFmin
LXIeq
LYIeq
LAFTeq
LAFTeq–LAeq
Lep,d
Lep,d,v
Dose%
Proj. Dose%
Input
#VPeaks
(>137dB)
TVpeak
TWAv
LAeq,T1,mov,max
LCeq,T2,mov,max
CORRECTION FILTERS
For Microphone Types 4950, 4952+EH-2152, 4952
and 4184-A:
Correct the frequency response to compensate for
sound field and accessories
Accessories (Type 4950 only): None or Windscreen
UA-0237
Sound Field: Free-field or Diffuse-field (for Types
4952 and 4184-A only: 0° (Top) reference direction
and 90° (Side) reference direction)
Analysis
DETECTORS
Parallel Detectors: On every measurement:
A- or B-weighted: (Switchable) broadband detector
channel with three exponential time weightings (Fast,
Slow, Impulse), one linearly averaging detector and
one peak detector
C- or Z-weighted: (Switchable) as for A- or Bweighted
Overload Detector: Monitors the overload outputs of
all the frequency weighted channels
MEASUREMENTS
X = frequency weightings A or B
Y = frequency weightings C or Z
V = frequency weightings A, B, C or Z
U = time weightings F or S
Q = exchange rate 4, 5 or 6 dB
#VPeaks
(>135dB)
LavUQ
DoseUQ%
LAeq,T2,mov,max
Leq,T1,mov,max
Overload %
LYeq
LCeq–LAeq
LXImax
LYImax
LXImin
LYImin
LAIeq–LAeq
Time Remaining
E
#VPeaks
(>NNNdB)
LVpeak
TWA
Proj. DoseUQ%
LCeq,T1,mov,max
Leq,T2,mov,max
Weather Data (requires connection to a weather
station):
Wind Dir. avg.
Wind Dir. min.
Wind Dir. max.
Wind Speed avg.
Wind Speed min.
Wind Speed max.
Amb. Temperature
Amb. Humidity
Amb. Pressure
Rainfall
Only for Display as Numbers or Quasi-analog Bars
LXS
LXF
LXI
LYS
LYF
LYI
LXS(SPL)
LXF(SPL)
LXI(SPL)
LYS(SPL)
LYF(SPL)
LYI(SPL)
LVpeak,1s
LAN1 or LAUN1
LAN2 or LAUN2
LAN3 or LAUN3
LAN4 or LAUN4
LAN5 or LAUN5
LAN6 or LAUN6
LAN7 or LAUN7
Std.Dev.
LAeq,T1,mov
LAeq,T2,mov
LCeq,T1,mov
LCeq,T2,mov
Leq,T1,mov
Leq,T2,mov
CHAPTER 14
Specifications
Instantaneous Weather Data:
Wind Dir.
Wind Speed
Instantaneous GPS Data:
Latitude
Longitude
MEASURING RANGES
When using Microphone Type 4950
Dynamic Range: From typical noise floor to max.
level for a 1 kHz pure tone signal, A-weighted: 16.4 to
140 dB
Primary Indicator Range: In accordance with
IEC 60651: A-weighted: 23.6 dB to 122.3 dB
Linearity Range: In accordance with IEC 60804:
A-weighted: 21.5dB to 140.8dB
Linear Operating Range: In accordance with
IEC 61672:
• A-weighted 1 kHz: 24.9 dB to 139.8 dB
• C-weighted: 26.2 dB to 139.8 dB
• Z-weighted: 31.6 dB to 139.8 dB
Peak C Range: In accordance with IEC 61672: 1 kHz,
43.0 dB to 142.8 dB
SAMPLING FOR BROADBAND STATISTICS
Statistics can be based on either LAF, LAS or LAeq:
• Statistics LAFN1–7 or LASN1-7 are based on sampling
LAF or LAS, resp., every 10 ms into 0.2 dB wide
classes over 130 dB
• Statistics LAN1–7 are based on sampling LAeq every
second into 0.2 dB wide classes over 130 dB
Full distribution saved with measurement
The Std.Dev. (Standard Deviation) parameter is calculated from the Statistics
Measurement Display and Control
MEASUREMENT DISPLAYS
Measurement data displayed as numbers of various
sizes and one quasi-analog bar.
Measured data are displayed as dB values, housekeeping data as numbers in relevant format.
Instantaneous measurement LXF is displayed as a
quasi-analog bar
MEASUREMENT CONTROL
Manual: Manually controlled single measurement
Automatic: Pre-set measurement time from 1 s to
24 hr in 1 s steps
Manual Controls: Reset, Start, Pause, Back-erase,
Continue and Store the measurement manually
BACK-ERASE
The last 5 s of data can be erased without resetting the
measurement
PREFERENCES
Date, Time and Number formats can be specified
Measurement Status
ON SCREEN
Information such as overload and running/paused are
displayed on screen as icons
TRAFFIC LIGHTS
Red, yellow and green LEDs show measurement
status and instantaneous overload as follows:
• Yellow LED flash every 5 s = stopped, ready to
measure
• Green LED flashing slowly = awaiting calibration
signal
• Green LED on constantly = measuring
• Yellow LED flashing slowly = paused, measurement
not stored
• Red LED flashing quickly = intermittent overload,
calibration failed
NOTIFICATIONS
Sends an SMS or email daily at a specified time or if
an alarm condition is fulfilled.
Alarm Conditions:
• Disk space below set value
• Internal battery enters set state
• Change in measurement state
• Reboot of instrument
Calibration
Initial calibration is stored for comparison with later
calibrations
ACOUSTIC
Using Sound Calibrator Type 4231 or custom
calibrator. The calibration process automatically
detects the calibration level when Sound Calibrator
Type 4231 is used
ELECTRICAL
Uses internally generated electrical signal combined
with a typed-in value of microphone sensitivity
CALIBRATION HISTORY
Up to 20 of the last calibrations made are listed and
can be viewed on the instrument
Signal Monitoring
The input signal can be monitored using an
earphone/headphones connected to the headphone
socket
HEADPHONE SIGNAL
Input signal can be monitored using this socket with
headphones/earphones
Gain Adjustment: –60 dB to 60 dB
131
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Hand-held Analyzer 2250 Light – User Manual
GPS Annotations
A text annotation with GPS information can be
attached (Latitude, Longitude, Altitude and position
error). Requires connection to a GPS receiver
Data Management
PROJECT TEMPLATE
Defines the display and measurement settings. Setups
can be locked and password protected
PROJECT
Measurement data stored with the project template
JOB
Projects are organised in jobs
Explorer facilities for easy management of data (copy,
cut, paste, delete, rename, open project, create job,
set default project name)
Software Specifications – 1/1-octave Frequency Analysis Software for 2250 Light
BZ-7131 and 1/3-octave Frequency Analysis Software for 2250 Light BZ-7132
The specifications for BZ-7131 and BZ-7132 include
the specifications for Sound Level Meter Software for
2250 Light BZ-7130. BZ-7131 and BZ-7132 add:
Standards
Conforms with the following National and International
Standards:
• IEC 61260 (1995–07) plus Amendment 1 (2001–09),
1/1-octave Bands and 1/3-octave Bands, Class 0
• ANSI S1.11–1986, 1/1-octave Bands and 1/3-octave
Bands, Order 3, Type 0–C
• ANSI S1.11– 2004, 1/1-octave Bands and 1/3-octave
Bands, Class 0
Frequency Analysis
CENTRE FREQUENCIES
1/1-octave Band Centre Frequencies (BZ-7131 only):
16 Hz to 8 kHz
1/3-octave Band Centre Frequencies (BZ-7132 only):
12.5 Hz to 16 kHz
MEASUREMENTS
X = frequency weightings A, B, C or Z
Spectra for Display and Storage:
LXeq
LXSmax
LXFmax
LXSmin
LXFmin
Spectra for Display Only:
LXS
LXF
Single Values
SIL
PSIL
SIL3
LXeq(f1–f2)*
NR
NR Decisive Band
RC
RC Classification
NCB
NCB Classification
NC
NC Decisive Band
Loudness
Loudness Level (BZ-7132 only)
*. where f1 and f2 are frequency bands in the spectrum.
MEASURING RANGES
When using Microphone Type 4950:
BZ-7131, 1/1-octave:
• Dynamic Range: From typical noise floor to max.
level for a pure tone signal at 1 kHz: 5.9 to 140 dB
• Linear Operating Range: In accordance with
IEC 61260: 22.9 dB to 140 dB
BZ-7132, 1/3-octave:
• Dynamic Range: From typical noise floor to max.
level for a pure tone signal at 1 kHz: 1.0 to 140 dB
• Linear Operating Range: In accordance with
IEC 61260: 20.1 dB to 140 dB
MEASUREMENT DISPLAYS
Spectrum: One or two spectra superimposed + A/B
and C/Z broadband bars
Table: One or two spectra in tabular form
Y-axis: Range: 5, 10, 20, 40, 60, 80, 100, 120, 140 or
160 dB. Auto zoom or auto scale available
Cursor: Readout of selected band
CHAPTER 14
Specifications
Software Specifications – Logging Software for 2250 Light BZ-7133
The specifications for BZ-7133 include the specifications for Sound Level Meter Software for 2250 Light
BZ-7130. BZ-7133 adds:
Logging
Y-axis: Range: 5, 10, 20, 40, 60, 80, 100, 120, 140 or
160 dB. Auto zoom or auto scale available
X-axis: Scroll facilities
Cursor: Readout of measurement data at selected
time
MEASUREMENTS
Measurement data logged at pre-set periods into files
on:
• SD Card: All hardware versions
• CF Card: Hardware versions 1 – 3
• USB Memory Stick: Hardware version 4
Logging Period: From 1 s to 24 hr with 1 s resolution
Fast Logging: LAF and LAeq can be logged every
100 ms, irrespective of logging period
Broadband Data Stored at each Logging Interval:
All, or up to 10 selectable broadband data including
weather data and LAeq,T,mov
Broadband Statistics Stored at each Logging
Interval: Full distribution, or none
Spectrum Data Stored at each Logging Interval: All,
or up to three selectable spectra (license for BZ-7131
or BZ-7132 required)
Logging Time: From 1 s to 31 days with 1 s resolution
Measurement Total: For the logging time, in parallel
with logging: All broadband data, statistics and spectra
(license for BZ-7131 or BZ-7132 required)
Automatic reboot and resume of operation in case of
power failure
MARKERS
Five user-definable markers for on-line marking of
noise sources or events anywhere in the profile.
Markers are set using the stylus on the touch screen,
or the three marker pushbuttons
MEASUREMENT DISPLAYS
Profile: Graphical display of selectable measurement
data versus time. Fast display of next or previous
marker; Profile overview of entire measurement
ALARM CONDITIONS
CIC failed (in addition to those specified for BZ-7130)
Calibration
CHARGE INJECTION CALIBRATION (CIC)
Injects an internally generated electrical signal in
parallel with the microphone diaphragm. A manual CIC
can be performed whenever there is no measurement
in progress
An automatic CIC can be performed at the start and
end of a logging measurement
Storage
Measurement data is stored on an external memory
device.
For availability, please refer to the Ordering Information
Notifications
Software Specifications – Signal Recording Option BZ-7226
Signal Recording Option BZ-7226 is enabled with a
separate license. It works with all the software for Type
2250-L: Sound Level Meter, Frequency Analysis and
Logging Software
For data storage, Signal Recording requires:
• SD Card: All hardware versions
• CF Card: Hardware versions 1 – 3
• USB Memory Stick: Hardware version 4
RECORDED SIGNAL
A-, B-, C- or Z-weighted signal from the measurement
transducer
AUTOMATIC GAIN CONTROL
The average level of the signal is kept within a 40 dB
range, or the gain can be fixed
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Hand-held Analyzer 2250 Light – User Manual
134
Functions with BZ-7130 and BZ-7131
SAMPLING RATE AND PRE-RECORDING
The signal is buffered for the pre-recording of the
signal. This allows the beginning of events to be
recorded even if they are only detected later.
Maximum
Maximum
Sampling Pre-recording (s) Pre-recording (s) Memory Memory
Rate
(KB/s) (KB/s)
16-bit
24-bit
(kHz)
16-bit
24-bit
HW 1 – 3 HW G4 HW 1 – 3 HW G4
8
100
470
70
310
16
24
16
50
230
30
150
32
48
24
30
150
16
96
48
72
48
10
70
3
43
96
144
PLAYBACK (with Hardware Version 4 only)
Playback of signal recordings can be listened to using
the earphone/headphones connected to the
headphone socket
RECORDING FORMAT
The recording format is either 24-bit or 16-bit wave
files (extension .wav) attached to the data in the
project, easily played-back afterwards on a PC using
BZ-5503, Type 7820 or 7825. Calibration information is
stored in the wav file, allowing PULSE to analyse the
recordings
Manual Control of Recording: Recording can be
manually started and stopped during a measurement
using a pushbutton or an external signal
Automatic Control of Recording: Start of recording
when measurement is started. Minimum and Maximum
recording time can be preset
Functions with BZ-7133
Manual Control of Recording (using Manual Event
or Back-erase pushbutton, or an external signal):
Recording during all of the event, or for preset
minimum and maximum duration. A Sound marker is
set while recording. Selectable pre- and post-recording
time
Manual Control of Recording (using touch screen):
Recording for the selected time period (subject to the
limitations of the pre-recording buffer). A Sound
marker is set for the selected time period
Automatic Control of Recording: Recording during
all of the event or for preset minimum and maximum
duration. Selectable pre- and post-recording time
Playback: Playback of signal recordings can be
listened to using earphone/headphones connected to
the headphone socket
Gain Adjustment: –60 dB to 60 dB
Software Specifications – Tone Assessment Option BZ-7231
LICENSE
Tone Assessment Option BZ-7231 is enabled with a
separate license and can be used with the 1/3-octave
and logging template (BZ-7132 and BZ-7133)
TONE ASSESSMENT
Tone assessment is based on the measured 1/3octave spectrum in accordance with either the international ‘ISO 1996:2007 Acoustics – Description,
assessment and measurement of environmental noise
– part 2: Determination of environmental noise levels.
Annex D (informative) Objective method for assessing
the audibility of tones in noise – Simplified method’
SPECTRA ASSESSED
The displayed 1/3-octave spectrum (Leq)
may be assessed. Assessment is made as postprocessing, that is, when measurement is paused or
stopped
SETUP ACCORDING TO STANDARD
Setups in violation of the standard are indicated as
such on the display. You can then accept to apply the
default setup. Tone assessment will be made if
possible, in spite of standard violations. For tone
assessment according to ISO 1996-2, Annex D, you
can set the division between the Low and Middle
frequency range, the division between the Middle and
High frequency range, and the limits for the level differences between adjacent bands
RESULTS
Tones are indicated above the spectrum when Tone is
selected as spectrum parameter. The resulting
adjustment can be viewed on the Value panel. It is not
saved with the measurement
QUALITY INDICATORS
On the display, a quality indicator (smiley) will indicate
that a hint is available for tone assessment quality.
Click on the indicator to see the hint
CHAPTER 14
Specifications
135
Software Specifications – Measurement Partner Suite BZ-5503
BZ-5503 is included with 2250 Light for easy synchronisation of data between PC and 2250 Light. BZ-5503 is
supplied on DVD BZ-5298
ON-LINE DISPLAY OF 2250 LIGHT DATA
Measurements on 2250 Light can be controlled from
the PC and displayed on-line with the PC, using the
same user interface on the PC as on 2250 Light
DATA MANAGEMENT
Explorer: Facilities for easy management of Instruments, Jobs and Projects (copy, cut, paste, delete,
rename, create)
Synchronisation: Projects can be synchronised
between PC and 2250 Light
EXPORT FACILITIES
Excel: Projects (or user-specified parts) can be
exported to Microsoft® Excel®
Brüel & Kjær Software: Projects can be exported to
Predictor-LimA Type 7810, Acoustic Determinator
Type 7816, Evaluator Type 7820, Protector Type 7825
or Qualifier (Light) Type 7830 (7831)
POST-PROCESSING
Measurement Partner Suite is a suite of modules,
including post-processing tools for data acquired with
Type 2250-L. The following post-processing modules
are available:
• Logging Post-processing Tools BZ-5503-A
• Spectrum Post-processing Tools BZ-5503-B
These two modules help to assess logging data and
measured spectra, such as calculating contribution
from markers on a logging profile or correcting spectra
for background noise. For more information see the
Product Data for Measurement Partner Suite, BP 2430
2250 LIGHT SOFTWARE UPGRADES AND
LICENSES
The utility software controls 2250 Light software
upgrades and licensing of the 2250 Light applications
INTERFACE TO 2250 LIGHT
USB, LAN or Internet connection
USB Connection:
• Hardware versions 1 – 3: USB ver. 1.1
• Hardware version 4: USB ver. 2.0
LANGUAGE
User Interface in Chinese (People’s Republic of
China), Chinese (Taiwan), Croatian, Czech, Danish,
English, Flemish, French, German, Hungarian,
Japanese, Italian, Korean, Polish, Portuguese,
Romanian, Russian, Serbian, Slovenian, Spanish,
Swedish and Turkish
HELP
Concise context-sensitive help in English
PC REQUIREMENT
Operating System: Windows® 7 or XP (both in 32-bit
or 64-bit versions)
Recommended PC:
• Intel® Core™ 2 Duo
• Microsoft®.NET 4.0
• 2 GB of memory
• Sound card
• DVD drive
• At least one available USB port
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Hand-held Analyzer 2250 Light – User Manual
Ordering Information
Type 2250-L-D10 Hand-held Analyzer with Sound
Level Meter Software BZ-7130
Type 2250-L-D20 Hand-held Analyzer with Sound
Level Meter Software BZ-7130
and 1/1-octave Frequency
Analysis Software BZ-7131
Type 2250-L-D30 Hand-held Analyzer with Sound
Level Meter Software BZ-7130
and 1/3-octave Frequency
Analysis Software BZ-7132
Type 2250-L-D40 Hand-held Analyzer with Sound
Level Meter Software BZ-7130
and Logging Software BZ-7133
Type 2250-L-D50 Hand-held Analyzer with Sound
Level Meter Software BZ-7130,
1/1-octave Frequency Analysis
Software BZ-7131, 1/3-octave
Frequency Analysis Software
BZ-7132 and Logging Software
BZ-7133
Included with Type 2250-L:
• Type 4950: Prepolarized Free-field 1/2 Microphone
• ZC-0032: Microphone Preamplifier
• AO-1494: USB Standard A to USB Micro B Interface
Cable for hardware version 4, 1.8 m (6 ft)
• AO-1476: USB Standard A to USB Mini B Interface
Cable for hardware versions 1 – 3, 1.8 m (6 ft)
• BZ-5298: Environmental Software DVD, including
Measurement Partner Suite BZ-5503
• ZG-0426: Mains Power Supply
• QB-0061: Battery Pack
• FB-0691: Hinged Cover for Hand-held Analyzer
• UA-0237: 90 mm dia. Windscreen
• DH-0696: Wrist Strap
• KE-0441: Protective Cover for 2250 Light
• UA-1654: 5 Extra Styli
ANALYZER COMPONENTS
ZG-0444
Charger for QB-0061 Battery Pack
Software and Accessories Available
Separately
Type 7821
SOFTWARE MODULES
BZ-7131
1/1-octave Frequency Analysis
Software for 2250 Light
BZ-7132
1/3-octave Frequency Analysis
Software for 2250 Light
BZ-7133
Logging Software for 2250 Light
BZ-7226
Signal Recording Option
BZ-7231
Tone Assessment Option
CALIBRATION
Type 4231
MEASURING
Type 3535-A
AO-0697-D-030
AO-0697-D-100
KE-0440
HT-0015
UA-0254
UA-0587
UA-0801
UA-1317
UA-1651
UL-1009
UL-1013
UL-1017
UA-1673
UA-1251
UA-1654
INTERFACING
BZ-5503-A
BZ-5503-B
Type 7825
UL-1016
UL-1019
UL-0250
UL-1025
Sound Calibrator (fits in KE-0440)
All-weather Case (see Product
Data BP 2251)
Microphone Extension Cable,
10-pin LEMO, 3 m (10 ft)
Microphone Extension Cable,
10-pin LEMO, 10 m (33 ft)
Travel Bag
Earphones
90 mm dia. Windscreens (6-pack
ofUA-0237)
Tripod
Small Tripod
Microphone Holder
Tripod Extension for Hand-held
Analyzer
SD Memory Card for Hand-held
Analyzers
CF Memory Card for Hand-held
Analyzers (for hardware versions
1 – 3)
SDHC Memory Card for Handheld Analyzers
Adaptor for Standard Tripod Mount
Lightweight Tripod
5 Extra Styli
Logging Module (see Product
Data BP 2430)
Spectrum Module (see Product
Data BP 2430)
Evaluator™ Light – data viewing
and calculation software
Protector™ – calculation software
of personal noise exposure
10/100 Ethernet CF Card (for
hardware versions 1 – 3)
CF WLAN Card for Hand-held
Analyzers (for hardware versions
1 – 3)
USB to RS–232 Converter, for
hardware version 4
SD WLAN Card for Hand-held
Analyzers for hardware version 4
CHAPTER 14
Specifications
Service Products
MAINTENANCE
2250-L-EW 1
2250-L-MU 1
2250-L-UPG
Extended Warranty, one year
extension
Upgrade of 2250 Light to Type
2250, performed at headquarters
Upgrade of software applications
to latest version
ACCREDITED CALIBRATION
2250-CAI
Accredited Initial Calibration of
Type 2250
2250-CAF
Accredited Calibration of Type
2250
2250-CTF
Traceable Calibration of Type
2250
2250-TCF
Conformance Test of Type 2250,
with certificate
Compliance with Standards
CE-mark indicates compliance with the EMC Directive and Low Voltage Directive.
C-Tick mark indicates compliance with the EMC requirements of Australia and New
Zealand.
Safety
EN/IEC 61010 – 1 and ANSI/UL 61010–1: Safety requirements for electrical equipment
for measurement, control and laboratory use. Part 1: General requirements
EMC Emission
EN/IEC 61000–6–3: Generic emission standard for residential, commercial and light
industrial environments.
CISPR 22: Radio disturbance characteristics of information technology equipment. Class
B Limits.
FCC Rules, Part 15: Complies with the limits for a Class B digital device.
IEC 61672–1, IEC 61260, IEC 60651 and IEC 60804: Instrumentation standards
This ISM device complies with Canadian ICES-001 (interference causing equipment
standard)
EMC Immunity
EN/IEC 61000–6–2: Generic standard – Immunity for industrial environments.
EN/IEC 61326: Electrical equipment for measurement, control and laboratory use – EMC
requirements.
IEC 61672–1, IEC 61260, IEC 60651 and IEC 60804: Instrumentation standards
137
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Hand-held Analyzer 2250 Light – User Manual
139
Appendix A
Setup Parameters
This appendix describes all the setup parameters included in a template.
A.1
Input
Table A.1
Input parameter
Parameter
Values
Comment
Sound Field Correction
Free-field
Diffuse-field
Select a correction matching the sound field of
your measurements. that is, you can make correct
measurements in a diffuse-field using a Type 4950
free-field microphone, by selecting Diffuse-field
correction. Even free-field correction of a free-field
microphone will enhance the overall frequency
response of the system. Generally, ISO requires
free-field conditions and ANSI requires diffuse-field
conditions. Check your local standards for the
setting you require.
No correction is made for unknown transducers
Loudness
Free-field
Diffuse-field
Auto
Determines whether Loudness and Loudness
Level are calculated based on Free-field or
Diffuse-field conditions. Set to Auto to follow the
setting of Sound Field Correction. For an unknown
microphone type, you can set Loudness to the
condition matching your request.
For outdoor measurements, it is often necessary to mount a windscreen on the microphone to
reduce the measured wind noise. This has, however, a small impact on the overall frequency
response of the analyzer.
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Hand-held Analyzer 2250 Light – User Manual
To compensate for this, use the built in windscreen correction.
Table A.2
Windscreen correction parameter
Parameter
Values
Comment
Windscreen Correction
None
UA-0237
You can manually select a windscreen correction
for Windscreen UA-0237. No correction is made
for unknown microphones
Trigger Input
None
This parameter should be set to match the
equipment connected to the Trigger Input socket
on the connector panel of the analyzer
MATRON
Handswitch
Set it to None, if not used.
Voltage Level
Set Trigger Input to MATRON Handswitch if the
analyzer is being used in the MATRON system.
This setting should also be used if you want to use
the Handswitch ZH-0680 for manually triggering
signal recordings
Set Trigger input to Voltage Level if you want to
control signal recording by a voltage level
generated by external equipment. The Voltage
Level should generate at least 2 V for On and less
than 1 V for Off. The duration of the steady level
should be at least 1 s, so it can be recognised by
the analyzer
A.2
Frequency Settings
Table A.3
Frequency Settings parameters
Parameter
Values
Comment
Broadband (excl. Peak)
AC
AZ
BC
BZ
All broadband parameters (except Lpeak) are
measured simultaneously with two different
frequency weightings – select the weightings here
Broadband Peak
X
C
Z
One broadband peak parameter Lpeak is
measured, select the frequency weighting here.
Note: X = frequency weighting A or B. ‘A’ requires
that the Broadband (excl. Peak) parameter is set to
AC or AZ. ‘B’ requires that the Broadband (excl.
Peak) parameter is set to BC or BZ
APPENDIX A
Setup Parameters
Table A.3
(Cont.) Frequency Settings parameters
Parameter
Spectrum
*
Bandwidth†
Values
Comment
X
C
Z
The frequency analysis (1/1-octave or 1/3-octave)
will be frequency weighted in accordance with this
parameter
Note: X = frequency weighting A or B. ‘A’ requires
that the Broadband (excl. Peak) parameter is set to
AC or AZ. ‘B’ requires that the Broadband (excl.
Peak) parameter is set to BC or BZ
1/1-octave
Bandwidth of frequency analysis
1/3-octave
Bottom F. for Special Leq‡,**
12.5 Hz to
Top
Frequency
1/1-octave: 16 Hz – 8 kHz
1/3-octave: 12.5 Hz – 16 kHz
Top Freq. for Special Leq‡,††
Bottom
Frequency to
20 kHz
1/1-octave: 16 Hz – 8kHz
1/3-octave: 12.5 Hz – 16 kHz
*. Requires 1/1-octave or 1/3-octave Frequency Analysis Software BZ-7131 or BZ-7132 respectively
†. The Bandwidth parameter cannot be set in Type 2250-L – the setting is determined by the template.
‡. For BZ-7131, BZ-7132 and BZ-7133 only.
**. Bottom F. for Special Leq is f1 in the parameter LXeq(f1-f2)
††. Top F. for Special Leq is f2 in the parameter LXeq(f1-f2)
A.3
Statistics
Table A.4
Statistics parameters
Parameter
Values
Comment
Broadband Statistics based on
LXeq
LXF
LXS
The broadband statistics are based on sampling
the broadband parameter LXF or LXS each 10 ms
or LXeq each second.
Note: X = frequency weighting A or B. ‘A’ requires
that the Broadband (excl. Peak) parameter is set
to AC or AZ. ‘B’ requires that the Broadband (excl.
Peak) parameter is set to BC or BZ
Percentile N1
0.1 to 99.9
User-defined percentile level where the value of
LXN1 is exceeded for N1% of the elapsed time
Percentile N2
0.1 to 99.9
User-defined percentile level where the value of
LXN2 is exceeded for N2% of the elapsed time
Percentile N3
0.1 to 99.9
User-defined percentile level where the value of
LXN3 is exceeded for N3% of the elapsed time
Percentile N4
0.1 to 99.9
User-defined percentile level where the value of
LXN4 is exceeded for N4% of the elapsed time
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Table A.4
(Cont.) Statistics parameters
Parameter
Values
Comment
Percentile N5
0.1 to 99.9
User-defined percentile level where the value of
LXN5 is exceeded for N5% of the elapsed time
Percentile N6
0.1 to 99.9
User-defined percentile level where the value of
LXN6 is exceeded for N6% of the elapsed time
Percentile N7
0.1 to 99.9
User-defined percentile level where the value of
LXN7 is exceeded for N7% of the elapsed time
The percentile levels N1 to N7 can be changed after the measurement has been done.
A.4
Measurement Control
Table A.5
Measurement control parameters
Parameter
*
Values
Comment
Manual
Automatic
Determines whether the measurement is under
Manual control (fully controlled by the Reset and
Start/Pause pushbuttons), or Automatic control
(start of measurement controlled by the Reset and
Start/Pause pushbuttons, end of measurement
automatically controlled by the instrument when
preset time has elapsed)
Preset Time *
00:00:01 to
24:00:00
Fixes the duration of a measurement from start to
automatic stop (in hours, minutes and seconds). Any
pauses made during the measurement via the
Start/Pause pushbutton are not counted in the
preset time
Preset Logging Time †
0.00:00:01 to
31.00:00:00
Fixes the duration of a measurement from start to
automatic stop (in days, hours, minutes and
seconds)
Logging Period †
00:00:01 to
24:00:00
Sets the period of the logging (in hours, minutes and
seconds)
Synchronize with Clock †
Yes
No
Select Yes to synchronize the logging intervals with
whole minutes or hours, for example, if Logging
Period is set to 00:01:00 (1 minute) and you start the
measurement at 8:12:33, then the first logging
interval will be from 8:12:33 to 8:12:59 (27 seconds),
the second will be from 8:13:00 to 8:13:59 (60
seconds), etc. Select No if you want every logging
interval to be exactly the specified Logging Period
Measurement Mode
APPENDIX A
Setup Parameters
Table A.5
143
(Cont.) Measurement control parameters
Parameter
Values
Comment
T for LXeq,T,mov
00:01:00 to
01:00:00
Sets the averaging time T (in minutes) of the moving
LAeq and moving LCeq. When the averaging time T
has elapsed the LAeq,T,mov and LCeq,T,mov
parameters will contain the LAeq and LCeq of the
latest T minutes – updated every second. In
addition, you also have
Leq,T,mov = LCeq,T,mov – LAeq,T,mov. The LXeq,T,mov is
not stored with the total data, but can be logged
(BZ-7224 and BZ-7225). The LAeq,T,mov,max,
LCeq,T,mov,max and the difference between the C- and
A-weighted values for the complete measurement
period are stored.
Note: There are two sets of these parameters,
allowing two simultaneous moving averages: e.g.,
one with 15 min averaging time and one with 1 hour
averaging time.
Charge Injection Calibration †
On
Off
Set to On for making a CIC at the start and end of
Logging. An Exclude marker is set on the profile and
Total parameters are not updated during the CIC
*. For Sound Level Meter (BZ-7130) and 1/1-octave and 1/3-octave Frequency Analyzer (BZ-7131 and BZ-7132) templates only
†. For Logging (BZ-7133) templates only
A.5
Logged Broadband
Table A.6
Logged broadband parameters*
Parameter
Values
Comment
Full Statistics
Yes
No
Determines whether the full broadband statistics
are logged or not
Broadband Parameters
All
Selected
Determines whether all broadband parameters are
logged or a selected part is logged (up to 10
parameters)
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Hand-held Analyzer 2250 Light – User Manual
Table A.6
(Cont.) Logged broadband parameters*
Parameter
Parameter 1 to
Parameter 10
Values
LXeq
LYeq
LCeq–LAeq
LAeq,T1,mov
LAeq,T2,mov
LCeq,T1,mov
LCeq,T2,mov
Leq,T1,mov
Leq,T2,mov
LXE
LYE
LVpeak
LXFmax
LXSmax
LXImax
LYFmax
LYSmax
LYImax
LXFmin
LXSmin
LXImin
LYFmin
LYSmin
LYImin
LXIeq
LYIeq
LAIeq-LAeq
LAFTeq
LAFTeq-LAeq
LavUQ
SIL
PSIL
SIL3
LWeq(f1-f2)
Overload
Wind Dir. avg.
Wind Dir. min.
Wind Dir. max.
Wind Speed avg.
Wind Speed min.
Wind Speed max.
Amb.
Temperature
Amb. Humidity
Amb. Pressure
Rainfall
*. For Logging (BZ-7133) templates only
Comment
This parameter can be set if Broadband
Parameters = Selected
X = frequency weightings A or B
(controlled by Setup > Frequency
Settings > Broadband (excl. Peak) parameter)
Y = frequency weightings C or Z
(controlled by Setup > Frequency
Settings > Broadband (excl. Peak) parameter)
V = frequency weightings A, B, C or Z (controlled
by Setup > Frequency Settings > Broadband Peak
parameter)
U = time weightings F or S
(controlled by Setup > Occupational Health > Time
Weighting for Lav parameter)
Q = exchange rate 4, 5 or 6 dB
(controlled by Setup > Occupational
Health > Exchange Rate for Lav parameter)
f1 = Bottom frequency band (controlled by
Setup > Frequency Settings > Bottom F. for
Special Leq)
f2 = Top frequency band (controlled by
Setup > Frequency Settings > Top Freq. for
Special Leq)
APPENDIX A
Setup Parameters
A.6
Logged Broadband (100 ms)
Logged broadband (100 ms) parameters*
Table A.7
Parameter
Parameter 1 to Parameter 3
Values
LAeq
LAF
LAS
Off
Comment
The selected parameter(s) will be logged every
100 ms. LAeq will have an averaging time of
100 ms.
*. For Logging (BZ-7133) templates only
A.7
Logged Spectrum
Table A.8
Logged spectrum parameters*
Parameter
Values
Comment
Spectrum Parameters
All
Selected
None
Determines whether all spectrum parameters
are logged, a selected part of the parameters
are logged (up to 3 parameters) or none are
logged
Spectrum 1 to
Spectrum 3
LXeq
LXFmax
LXSmax
LXFmin
LXSmin
Off
These parameters can be set if Spectrum
Parameters = Selected.
X = frequency weightings A, B, C or Z
(controlled by Setup – Frequency
Settings – Spectrum parameter)
*. For Logging (BZ-7133) templates only, requires 1/1-octave or 1/3-octave Frequency Analysis Software BZ-7131 or BZ-7132
respectively
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A.8
Markers
Table A.9
Markers*
Parameter
Values
Comment
Marker 1
Text string
Default set to ‘Exclude’. This marker can be
set using the stylus in the profile or the Backerase
pushbutton during a measurement
Marker 2
Text string
Default set to ‘Event 1’. This marker can be
set using the stylus in the profile or the
Manual Event 1
pushbutton during a
measurement
Marker 3
Text string
Default set to ‘Event 2’. This marker can be
set using the stylus in the profile, or the
Manual Event 2
pushbutton during a
measurement
Marker 4 and Marker 5
Text string
These markers can be set using the stylus in
the profile display
Marker 6
Text string
Default set to ‘Sound’. This marker is set if a
signal recording is made during a
measurement
Pre-marker Time
0 to 5 s
Specifies number of seconds marker 1,
marker 2 or marker 3 will be set ahead of the
point where the Back-erase or the Manual
Event 1 or 2 pushbuttons are pressed
*. For Logging (BZ-7133) templates only
APPENDIX A
Setup Parameters
A.9
Signal Recording
Table A.10
Signal Recording parameters*
Parameter
Recording Control
Values
Off
Comment
Determines how recording of the measured signal is
controlled
Automatic
Manual Event
Exclude Event†
External Event
All Events†
Set to Automatic to start the recording when the measurement
is started and record throughout the measurement, only
limited by the Maximum Duration
Set to Manual Event to start recording manually while
measuring when the Manual Event pushbutton is pressed,
and record until pressing the pushbutton again, however, take
Maximum and Minimum Duration into account
Set to Exclude Event to start recording manually while
measuring when the Back-erase pushbutton is pressed, and
record until pressing the pushbutton again, however, take
Maximum and Minimum Duration into account
Set to External Event to start recording using external
equipment connected to the Trigger Input Socket
Set to All Events to record while any of the events above are
active, however, take Maximum and Minimum Duration into
account
If you do not want to record the input signal, then set
Recording Control to Off, to economise on power
Recording Quality
Low
Fair
Medium
High
Recorded Signal †
Input X-weighted
Input C-weighted
Input Z-weighted
This setup determines the quality of the recording by adjusting
the sampling rate.
The amount of space required for the recording will depend on
the selected quality and resolution:
Quality Sampling Upper
Memory
Memory
freq.
freq.
16-bit
24-bit
Low
8 kHz
3 kHz
16 KB/s
24 KB/s
Fair
16 kHz
6 kHz
32 KB/s
48 KB/s
Medium 24 kHz
10 kHz
48 KB/s
72 KB/s
High
48 kHz
20 kHz
96 KB/s 144 KB/s
Use this parameter to select the frequency weighting of the
recorded signal
Note 1: The frequency weighting of the recorded signal can
be selected independently of the frequency weighting of the
measurement and the signal at the earphone socket
Note 2: X = frequency weighting A or B. ‘A’ requires that the
Broadband (excl. Peak) parameter is set to AC or AZ. ‘B’
requires that the Broadband (excl. Peak) parameter is set to
BC or BZ
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Table A.10
(Cont.) Signal Recording parameters*
Parameter
Automatic Gain
Control †
Values
On
Off
Comment
To ease identification of sound sources by listening, the gain
can be automatically adjusted to keep the average level within
a 40 dB range. When playing back the recorded signal, you
will then hear clearly the whole signal content, whether the
level has been 20 dB or 140 dB.
Set Automatic Gain Control to On to convert the recorded
signal. The recorded signal is stored as a 16 bit wav-file.
Set Automatic Gain Control to Off for recording the signal with
a fixed gain – then set Resolution = 24 bit (recommended) to
cover the full 120 dB dynamic range (from max. input level
and down) or select Resolution = 16 bit and specify the Peak
Recording Level to fit the signal.
Note: If the sound contains very high levels at low frequency,
then a fixed gain is recommended
Resolution
24 bit/16 bit
Set Resolution to 24 bit to cover the full dynamic range. Set
Resolution to 16 bit to cover up to 96 dB from Peak Recording
Level and down.
Note: You will only be warned about overload in the recorded
signal if Automatic Gain Control is On or if Resolution is 24 bit
or if Peak Recording Level is set to its maximum value.
Peak Recording
Level
145 dB
135 dB
125 dB
115 dB
105 dB
95 dB
85 dB
75 dB
For Automatic Gain Control = Off and Resolution = 16 bit the
recorded wave file has a dynamic range of up to 96 dB. When
playing back on the analyzer, the dynamic range of the output
is approx. 75 dB. When playing back on a PC it might be even
lower. Set Peak Recording Level to fit the signal.
The values for Peak Recording Level take the sensitivity of the
attached transducer into account. The values shown in the list
here are nominal values for a Type 4189 or 4190 microphone.
Hint: Monitor the Lpeak value during a trial measurement
before selecting the Peak Recording Level
Pre-recording
Time †
0 to 470 s
Recording is started the Pre-recording Time before the trigger
conditions are fulfilled (for example, 5 s means the recording
will be started 5 s before you hit the Manual Event
pushbutton). This is possible because the recording is done
continuously in an internal buffer, ready to be saved as a wave
file. The Pre-recording Time is limited by this buffer size and
the Recording Quality and Resolution:
Quality
Pre-recording
Pre-recording
Time limit 16-bit
Time Limit 24-bit
HW 1 – 3 HW 4
HW 1 – 3
HW 4
Low
110 s
470 s
70 s
310 s
Fair
50 s
230 s
30 s
150 s
Medium
30 s
150 s
16 s
96 s
High
10 s
70 s
3s
43 s
APPENDIX A
Setup Parameters
Table A.10
(Cont.) Signal Recording parameters*
Parameter
Values
Comment
Post-recording
Time †
0 to 300 s
Use this parameter to specify how much extra you want to be
recorded after the trigger conditions are no longer fulfilled
Duration Limit †
On
Use this parameter to enable the Minimum Duration and
Maximum Duration parameters for overruling the duration of
the signal recording determined by the trigger condition
parameters
Off
Minimum Duration †
00:00:00 to
01:00:00
When Duration Limit is On, then Minimum Duration will
determine the minimum recording time regardless of the
trigger conditions
The total record length will then (as a minimum) be the sum of
Minimum Duration, Pre-recording Time and Post-recording
Time
Maximum Duration †
00:00:00 to
01:00:00
When Duration Limit is On, then Maximum Duration will
determine the maximum recording time regardless of the
trigger conditions.
The total record length will then (as a maximum) be the sum of
Maximum Duration, Pre-recording Time and Post-recording
Time.
Note: If Maximum Duration = 00:00:00, then it is disabled and
does not limit the duration
*. Requires license for Signal Recording Option BZ-7226.
†. For Logging BZ-7133 template only.
A.10 Occupational Health
Table A.11
Occupational health parameters
Parameter
Values
Comment
Exposure Time
00:01:00 to
1.00:00:00
Set the Exposure Time to the actual time that
you are exposed to noise during a workday.
Used for calculation of Lep,d and Lep,d,v.
Note: Exposure Time can be changed after the
measurement has been done
Reference Time
00:01:00 to
5.00:00:00
Set the Reference Time as required for
calculation of Sound Exposure Level or Time
Weighed Average with a reference time other
than 8 hours.
Used for calculation of Lep,d,v and TWAv
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Table A.11
(Cont.) Occupational health parameters
Parameter
Values
Comment
Threshold Level
0 to 140 dB
Any sound levels below the threshold value do
not contribute to the Dose measurement data.
The time resolution for this calculation is 1 s for
calculation of Dose and ProjDose – and 10 ms
for calculation of TWA, TWAv, DoseUQ and
ProjDoseUQ.
Used for calculation of Dose, ProjDose, TWA,
TWAv, DoseUQ, ProjDoseUQ.
U = Time Weighting for Lav: F or S
Q = Exchange Rate for Lav: 4, 5 or 6 dB
Criterion Level
0 to 140 dB
Criterion Level is the sound level allowed for an
8-hour period and would yield a 100% dose.
The criterion level must be set according to the
legislation with which you will have to comply.
Used for calculation of Dose, ProjDose,
DoseUQ, ProjDoseUQ.
U = Time Weighting for Lav: F or S
Q = Exchange Rate for Lav: 4, 5 or 6 dB
PeaksOver Level
0 to 200 dB
Any peak levels that exceed the level set here
will be counted.
Used for calculation of #XPeaks(>NNNdB)
X = A, B, C or Z, set by Setup – Input –
Broadband Peak, NNN is the PeaksOver Level
Note: Two other peak counters are preset to
count peaks over 135 dB and 137 dB,
respectively
Exchange Rate for Lav
4 dB
5 dB
6 dB
The increase in noise level that corresponds to a
doubling of the noise level is determined by
Exchange Rate for Lav.
Set Exchange Rate for Lav as required by your
local standards.
Used for calculation of LavUQ, TWA, TWAv
DoseUQ, ProjDoseUQ.
U = Time Weighting for Lav: F or S
Q = Exchange Rate for Lav: 4, 5 or 6 dB
Note: TWA and TWAv requires U = S and
Q=5
Time Weighting for Lav
F
S
Lav will be time weighted in accordance with this
parameter.
Used for calculation of LavUQ, TWA, TWAv
DoseUQ, ProjDoseUQ.
U = Time Weighting for Lav: F or S
Q = Exchange Rate for Lav: 4, 5 or 6 dB
Note: TWA and TWAv requires U = S and Q = 5
APPENDIX A
Setup Parameters
A.11 Tone Assessment
Table A.12
Tone Assessment Parameters*
Parameter
Tone Assessment
Values
On
Off
Comment
Set Tone Assessment to On to enable tone
assessment functionality, then select the Tone
parameter above the spectrum to display the
results
Tone Standard
ISO 1996:2-2007
ISO 1996:2-2007, Annex D is the objective
method for assessing the audibility of tones in
noise – simplified method. This method uses
1/3-octave spectra
Adjustment
0.0 to 20 dB
This is the adjustment you should add to LAeq
if audible tones are found in the spectrum. The
resulting adjustment can be read below the
spectrum
Low Freq. Last Band
12.5 Hz to 315 Hz
Set the frequency for the last band of the low
frequency range of the assessment. Default is
125 Hz
The low frequency range is from the lowest
measured frequency band to the value of the
Low Freq. Last Band parameter
Middle Freq. Last Band
160 Hz to 20 kHz
Set the frequency for the last band of the
middle frequency range of the assessment.
Default is 400 Hz
The middle frequency range is from one band
higher than the Low Freq. Last Band
parameter to the value of the Middle Freq.
Last Band parameter
Level Difference Low
0.1 to 100.0 dB
Set the required level difference for detecting
a tone in the low frequency range.
Default is 15 dB
Level Difference Middle
0.1 to 100.0 dB
Set the required level difference for detecting
a tone in the middle frequency range.
Default is 8 dB
Level Difference High
0.1 to 100.0 dB
Set the required level difference for detecting
a tone in the high frequency range.
Default is 5 dB
*. Requires Tone Assessment Option BZ-7231. Available for microphone input only.
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153
Appendix B
Measurement Parameters
This appendix describes the measurement parameters. They are measured in accordance with
the setup parameters.
Please refer to the Glossary in Appendix E for a description of the parameters.
The following letters are substituted in the parameters that follow to represent the wide range
of frequency weightings, time weightings and percentile levels available:
V = frequency weightings A, B, C or Z (controlled by Setup > Frequency Settings > Broadband
Peak parameter)
X = frequency weightings A or B (controlled by Setup > Frequency Settings > Broadband (Excl.
Peak) parameter)
Y = frequency weightings C or Z (controlled by Setup > Frequency Settings > Broadband (Excl.
Peak) parameter)
W = frequency weightings A, B, C or Z (controlled by Setup > Frequency Settings > Spectrum
parameter)
U = time weightings F or S (controlled by Setup > Statistics > Spectral Statistics Based On
parameter)
R = time weightings F or S (controlled by Setup > Occupational Health > Time Weighting for
LAV parameter)
Q = exchange rate 4, 5 or 6 dB (controlled by Setup > Occupational Health > Exchange Rate
parameter)
N = number between 0.1 and 99.9 (controlled by Setup > Statistics > Percentile N parameter)
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Hand-held Analyzer 2250 Light – User Manual
B.1
Total Measurement
B.1.1
For BZ-7130, BZ-7131, BZ-7132 and BZ-7133 Software
The following parameters are measured within the Elapsed Time:
Equivalent Continuous Sound Levels
•
•
•
LXeq
LYeq
LCeq-LAeq
•
LAeq,T1,mov (not saved with data)
•
LAeq,T1,mov,max
•
LAeq,T2,mov (not saved with data)
•
LAeq,T2,mov,max
•
•
•
•
•
LCeq,T1,mov (not saved with data)
LCeq,T1,mov,max
LCeq,T2,mov (not saved with data)
LCeq,T2,mov,max
Leq,T1,mov (not saved with data)
Leq,T1,mov,max
Leq,T2,mov (not saved with data)
Leq,T2,mov,max
•
•
•
Sound Exposure Level
•
•
LXE
LYE
Peak Sound Level
•
•
LVpeak
TVpeak
Maximum Time-weighted Sound Levels
•
•
•
•
•
•
LXFmax
LXSmax
LXImax
LYFmax
LYSmax
LYImax
APPENDIX B
Measurement Parameters
Minimum Time-weighted Sound Levels
•
•
•
•
•
•
LXFmin
LXSmin
LXImin
LYFmin
LYSmin
LYImin
ISO/EU Occupational Health Parameters
•
•
•
•
•
•
E
Dose
ProjDose
#VPeaks (>xxx dB)
#VPeaks (>137 dB)
#VPeaks (>135 dB)
US Occupational Health Parameters
•
LavRQ
•
TWA
•
TWAv
•
DoseRQ
•
ProjDoseRQ
General Parameters
•
Overload in %
•
Start time
•
Stop Time
•
Elapsed Time (excl. pauses)
Special Parameters
•
•
LYIeq
•
LAIeq-LAeq
•
LAFTeq (also called LAFTm5)
•
LAFTeq-LAeq
•
•
•
•
*.
LXIeq (also called LXIm)
SIL (average of LZeq octave band levels: 500 Hz, 1000 Hz, 2000 Hz and 4000 Hz)*
PSIL (average of LZeq octave band levels: 500 Hz, 1000 Hz and 2000 Hz)*
SIL3 (average of LZeq octave band levels: 1000 Hz, 2000 Hz and 4000 Hz)*
LWeq(f1-f2) (sum of power values for LWeq frequency bands from f1 Hz to f2 Hz)*
These parameters require a license for either BZ-7131 or BZ-7132, and measurement of spectra.
155
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Hand-held Analyzer 2250 Light – User Manual
Statistics to Calculate Percentile Levels and Std.Dev.
Weather Data (requires connection to a weather station)
•
Wind Dir. avg.
•
Wind Dir. min.
•
Wind Dir. max.
•
Wind Speed avg.
•
Wind Speed min.
•
Wind Speed max.
•
Amb. Temperature
•
Amb. Humidity
•
Amb. Pressure
•
Rainfall
Spectrum Parameters†
•
LWeq
•
LWFmax
•
LWSmax
•
LWFmin
•
LWSmin
Statistics to Calculate Percentile Levels as Spectra*
CIC Results
•
CIC 1 Result‡
•
CIC 1 Dev. from Reference†
•
CIC 2 Result†
•
CIC 2 Dev. from Reference†
In addition to the parameters saved within the data (listed above), the following can be inserted
in a project annotation as a GPS Note:
†.
‡.
•
Position as Latitude and Longitude
•
Altitude
•
Position error (dependant on type of GPS unit)
These parameters require a license for either BZ-7131 or BZ-7132, and measurement of spectra.
These parameters are available for Logging BZ-7224 only.
APPENDIX B
Measurement Parameters
B.2
Logged Measurement
B.2.1
For Logging Software for 2250 Light BZ-7133
157
Parameters measured within a logging interval – up to ten (or all) of the following parameters can
be logged:
Equivalent Continuous Sound Levels
•
LXeq
•
LYeq
•
LCeq-LAeq
•
LAeq,T1,mov
•
LAeq,T2,mov
•
•
•
LCeq,T1,mov
LCeq,T2,mov
•
Leq,T,mov
Leq,T,mov
Sound Exposure Level
•
LXE
•
LYE
Peak Sound Level
•
LVpeak
Maximum Time-weighted Sound Levels
•
LXFmax
•
LXSmax
•
LXImax
•
LYFmax
•
LYSmax
•
LYImax
Minimum Time-weighted Sound Levels
•
LXFmin
•
LXSmin
•
LXImin
•
LYFmin
•
LYSmin
•
LYImin
US Occupational Health Parameters
•
LavRQ
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Hand-held Analyzer 2250 Light – User Manual
Special Parameters
•
LXIeq (also called LXIm)
•
LYIeq
•
LAIeq-LAeq
•
LAFTeq (also called LAFTm5)
•
LAFTeq-LAeq
•
•
•
•
SIL (average of LZeq octave band levels: 500 Hz, 1000 Hz, 2000 Hz and 4000 Hz)**
PSIL (average of LZeq octave band levels: 500 Hz, 1000 Hz and 2000 Hz)*
SIL3 (average of LZeq octave band levels: 1000 Hz, 2000 Hz and 4000 Hz)*
LWeq(f1-f2) (sum of power values for LWeq frequency bands from f1 Hz to f2 Hz)*
The following parameters are available per set of logged parameters
•
Overload in %
•
Start time
•
Stop Time
•
Elapsed Time (excl. pauses)
The Statistics can be logged to calculate Percentile Levels and Std.Dev. per logging interval
Weather Data (requires connection to a weather station)
•
Wind Dir. avg.
•
Wind Dir. min.
•
Wind Dir. max.
•
Wind Speed avg.
•
Wind Speed min.
•
Wind Speed max.
•
Amb. Temperature
•
Amb. Humidity
•
Amb. Pressure
•
Rainfall
Up to three (or all) of the following Spectrum parameters can be logged and displayed on the
spectrum display††
•
LWeq
•
LWFmax
•
LWSmax
•
LWFmin
•
LWSmin
**. These parameters require a license for either BZ-7131 or BZ-7132, and measurement of spectra.
††. These parameters require a license for either BZ-7131 or BZ-7132, and measurement of spectra.
APPENDIX B
Measurement Parameters
B.3
Logged (100 ms) Measurement
B.3.1
For Logging Software for 2250 Light BZ-7133
The following Broadband parameters can be logged every 100 ms
B.4
•
LAeq
•
LAF
•
LAS
Instantaneous Measured Parameters (available at any
time)
Instantaneous Time-weighted Sound Levels
•
LXF
•
LXS
•
LXI
•
LYF
•
LYS
•
LYI
Sound Pressure Levels (maximum time-weighted sound levels once per second)
•
LXF(SPL)
•
LXS(SPL)
•
LXI(SPL)
•
LYF(SPL)
•
LYS(SPL)
•
LYI(SPL)
Peak Sound Levels (maximum peak sound level once per second)
•
LVpeak,1s
Instantaneous Weather Data
•
Wind Dir.
•
Wind Speed
Instantaneous GPS Data
•
Latitude
•
Longitude
159
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Hand-held Analyzer 2250 Light – User Manual
Instantaneous Measured Spectra‡‡
B.4.1
•
LWF
•
LWS
Processed Parameters for Display Only
The following general parameter is available for display for Total data:
•
Time Remaining (for the current measurement, taking available disk space into account)
The following ISO/EU Occupational Health Parameters are calculated and displayed for Total,
Periodic Reports and Logged data:
•
Lep,d
•
Lep,d,v
If Statistics are available, then Std.Dev. and 7 percentile levels can be calculated and displayed:
LXN1 or LXUN1 to LXN7 or LXUN7.
If LWeq spectrum is available, then NC, NC Decisive Band, NR, NR Decisive Band, RC, RC
Classification, NCB, NCB Classification can be calculated and displayed.
If LWeq 1/3-octave spectrum is available, then Loudness and Loudness Level can be calculated
and displayed.
B.4.2
Relationship Between Setup and Measurement Parameters
The measurement parameters are measured in accordance with the setup parameters.
Table B.1 through Table B.3 describe the relationship between the setup and measurement
parameters:
Table B.1
Parameter
General Parameters
LXeq
LXE
LXIeq
LAFTeq
LVpeak
TVpeak
LXYmax
LXYmin
Sound Field
Correction








Windscreen
Correction








Broadband
(excl. Peak)






Broadband
Peak


‡‡. These parameters require a license for BZ-7223 and measurement of spectra.
APPENDIX B
161
Measurement Parameters
Table B.2
Statistics
Parameter
LXYN
Sound Field
Correction

Windscreen
Correction

Broadband
(excl. Peak)

Broadband
Statistics
based on

Percentile N%

Table B.3
Occupational Health Parameters
Parameter Lep,d Lep,d,v
E
Dose ProjDose
Sound
Field
Correction











Windscreen
Correction











Broadband
(excl.
Peak)
A
A
A
A
A
A
A
A
A
A




Broadband
Peak
Exposure
Time
Reference
Time





Threshold
Level


Criterion
Level


PeaksOver Level
#VPeaks LavRQ TWA TWAv DoseProj(>NNNdB)
RQ DoseRQ



Exchange
Rate for
Lav





Time
Weighting
for Lav





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Hand-held Analyzer 2250 Light – User Manual
163
Appendix C
Instrument Parameters
This appendix describes the parameters for microphones and calibration.
C.1
Current Transducer
Table C.1
Current transducer parameter
Parameter
Values
Transducer (that is, connected
to Top Socket)
C.2
Comment
Name and serial number of
transducer
This parameter selects which
transducer is connected to the
Top Socket (displayed in Setup
– Input and at the top of
Transducers database)
Transducers
The Transducers setup consists of a setup and a calibration history.
C.2.1
Microphone Setup
Table C.2
Microphone setup parameters
Parameter
Values
Comment
Serial No.
Text string
Insert unique ID for microphone
Name
Text string
Insert name of microphone to display together
with serial number
Description
Text string
Insert description of microphone
Preamplifier ID No.
Text string
Document the preamplifier here
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Hand-held Analyzer 2250 Light – User Manual
Table C.2
(Cont.) Microphone setup parameters
Parameter
Values
Comment
Microphone Type
4950
4952 0°
4952 90°
4184-A 0°
4184-A 90°
EH-2152 0°
EH-2152 90°
Unknown
If microphone is a known type, then the rest of
the parameters of the transducer are set
automatically. Sound Field Correction and
Windscreen Correction are possible for known
microphone types only.
Microphone Types 4952 and 4184-A can be
used with 0° reference direction or 90°
reference direction.
For unknown microphone types, set the rest of
the parameters – no corrections can be made
for unknown types
Note 1: Type 4184-A is available for hardware
version 4 only
Note 2: You can specify up to 5 different
microphones in the transducer database.
For hardware versions 1 – 3 the number is
limited to 3.
Nominal Sensitivity
Double
Set automatically for known Microphone Type,
otherwise set the nominal sensitivity of the
microphone in mV/Pa
Polarization Voltage
Yes
No
Set to No if microphone is prepolarized,
otherwise set to Yes for polarization voltage of
200 V. Set automatically for known
Microphone Type.
Note: This parameter is available for
hardware version 4 only.
Free-field Type
Yes
No
Set to Yes for Free-field types, otherwise set
to No. Set automatically for known
Microphone Type
Capacitance
Double
Insert capacitance of microphone in pF. Set
automatically for known Microphone Type
Calibration Check
CIC
Microphone only: For microphone
Type 4184-A you can select to check the
calibration of the system using CIC or
Actuator – for all other microphone types
the setting is preset to CIC.
Actuator
APPENDIX C
Instrument Parameters
C.2.2
Calibration History
Table C.3
Calibration history parameters
Parameter
Values
Comment
1. Calibration date & Time
YYYY-MM-DD hh:mm:ss
Initial
1. Sensitivity
Double
Initial mV/Pa
1. Preamplifier ID No.
Text string
Initial
1. User
2250 Light
Initial
1. Input
Top Socket
Initial
1. Calibration Type
External, Internal, Check
Initial
1. Calibrator Serial No.
Text string
Initial
1. Comment
Text string
Initial
1. 2250 Serial No.
Text string
Initial
2. Calibration date & Time
YYYY-MM-DD hh:mm:ss
2. Sensitivity
Double
2. Preamplifier ID No.
Text string
2. User
2250 Light
2. Input
Top Socket
2. Calibration Type
External, Internal, Check
2. Calibrator Serial No.
Text string
2. Comment
Text string
2. 2250 Serial No.
Text string
:
:
:
N. Calibration date & Time
YYYY-MM-DD hh:mm:ss
Current
N. Sensitivity
Double
Current
N. Preamplifier ID No.
Text string
Current
N. User
2250 Light
Current
N. Input
Top Socket
Current
N. Calibration Type
External, Internal, Check
Current
N. Calibrator Serial No.
Text string
Current
N. Comment
Text string
Current
N. 2250 Serial No.
Text string
Current
165
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Hand-held Analyzer 2250 Light – User Manual
C.3
Calibration Setup
Table C.4
Calibration setup parameters
Parameter
Values
Comment
Calibrator
4231
Custom
Select which calibrator to use
Calibration Level (for Sound
Calibrator Type 4231)
0.00 to 200.00 dB
re 20 µPa
The Calibration Level will be automatically
calculated
Calibration Level (for Custom
Sound Level Calibrator)
0.00 to 200.00 dB
re 20 µPa
Set calibration level for custom calibrator
Serial No. for 4231
Text string
Serial number will be documented in
calibration history
Serial No. for Custom Sound
Level Calibrator
Text string
Serial number will be documented in
calibration history
C.4
Type 2250 Light Microphones
Table C.5
Microphone
Microphone parameters
Application
Optimised
For
Dynamic Range*
Free-field ±1 dB
Frequency
Range
Free-field ±2 dB
Frequency
Range
4950
Standard
Prepolarized
Free-field and
Diffuse-field
16.4 –140 dB(A)
6.3 Hz – 19.0 kHz
5.6 Hz – 20 kHz
4952
Outdoor
Prepolarized
Free-field 0
or 90and
Diffuse-field
20.0 – 141 dB(A)
6.3 Hz – 14.0 kHz
5.6 Hz – 14.5 kHz
4952 +
EH-2152
Outdoor
Prepolarized
Free Field 0 20.0 – 141 dB(A)
or 90
Diffuse Field
6.3 Hz – 14.0 kHz
5.6 Hz – 14.5 kHz
4184-A†
Weatherproof
200 V
Free-field 0
or 90and
Diffuse-field
28.8 – 150 dB(A)
3.6 Hz – 15.0 kHz
6.6 Hz – 15.0 kHz
2.5 Hz – 16.5 kHz
5.6 Hz – 16.5 kHz
*. From the typical total inherent noise level for the microphone and Type 2250 Light, to the overload limit for a sinusoidal
signal at 1 kHz.
†. Only with hardware version 4
167
Appendix D
Preferences
This appendix describes the parameters that are common to all project templates and can be set
as preferences.
D.1
Display Settings
Table D.1
Traffic light, backlight and decimal place parameters
Parameter
Values
Comment
Traffic Light Brightness
Off
Low
Normal
High
Key Backlight
Off
On
Backlight Brightness
Minimum
Level 2
Level 3
Level 4
Level 5
Maximum
Select backlight brightness using the backlight
icon
at the bottom of the screen. Maximum
level uses the most power
Resolution of Readings
Normal
dB: Number of decimal places for values
displayed:
Normal, 1; Extended, 2
Engineering: Number of digits for values
displayed: Normal, 3; Extended, 4
Note: This setting is for display only and has no
effect on the measurement precision or resolution
Extended
168
Hand-held Analyzer 2250 Light – User Manual
D.2
Power Settings
Table D.2
Power settings parameters
Parameter
Values
Comment
Backlight Dim
After 30 sec.
After 1 min.
After 2 min.
After 5 min.
After 10 min
Never
Select optimum value for full
backlight on (brightness
determined by Backlight
Brightness) before the backlight
is dimmed (if analyzer is left
untouched)
Turn off Backlight
After 1 min.
After 2 min.
After 5 min.
After 10 min.
After 30 min.
Never
Hardware versions 1 – 3 only:
Select optimum value for how
long the backlight is dimmed
before it is switched off
Standby
After 1 min.
After 2 min.
After 5 min.
After 10 min.
After 30 min.
Never
Select optimum value for ‘on’
period before the instrument is
set automatically to standby
Ext. Power
Charge battery only
Switch on and charge
Hardware version 4 only: The
Ext. Power setting determines
whether the analyzer automatically switches on and charges
when applied to external power
or the analyzer just charges the
battery.
Hardware versions 1 – 3: This
functionality is determined by a
small, manual switch at the back
of the analyzer. Remove the
internal battery pack to access
the switch
Note: If the instrument is externally powered, then the settings will be ignored.
APPENDIX D
Preferences
D.3
Regional Settings
Table D.3
Regional settings parameters
Parameter
Values
Comment
Decimal Point
.
,
Select your preferred decimal
point
Date Separator
/
.
Select your preferred date
separator
Date Format
yyyy-MM-dd HH:mm:ss
dd-MM-yyyy HH:mm:ss
MM-dd-yyyy HH:mm:ss
yy-MM-dd hh:mm:ss XX
dd-MM-yy hh:mm:ss XX
MM-dd-yy hh:mm:ss XX
Select your preferred date
format: HH = 24 hour, hh = 12
hour, XX = AM or PM
Time Zone
GMT-12
GMT
GMT+13
Select the time zone of your
region
Language
English, ...
A number of different languages
are available for your 2250
Light.
Hardware versions 1 – 3: Select
your preferred language – if it is
not on the list, then it might be
available for installation using
BZ-5503
Hardware version 4: All
languages are installed
Keyboard
United Kingdom, ...
33 different keyboards. Select
your preferred keyboard
Wind Speed Unit
SI or US/UK
Select SI for m/s or US/UK for
mph
Temperature Unit
SI or US/UK
Select SI for °C or US/UK for °F
Dimension Unit
SI or US/UK
Select SI for m or US/UK for ft
169
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Hand-held Analyzer 2250 Light – User Manual
D.4
Table D.4
Storage Settings
Storage settings parameters
Parameter
Values
Comment
Auto-naming of Projects
Yes
No
Select Yes for automatically
naming projects from the project
start date as Year, Month, Date
in the format YYMMDD, (for
example, 051112 as 2005,
November 12th) or No for using
the name defined in the Project
Name Prefix parameter
Project Name Prefix
Text string
Prefix for automatically
generated project name.
Maximum 8 characters
D.5
Table D.5
Headphone Settings
Headphone settings parameters
Parameter
Listen to Signal
Values
No
Input X-weighted
Input C-weighted
Input Z-weighted
Comment
You can listen to the input signal
for monitoring purposes.
Select one of the A-weighted,
B-weighted, C-weighted or
Z-weighted signals
Note 1: The frequency
weighting of the signal you listen
to can be selected independently of the frequency
weighting of the measurement
and the signal used for sound
recording
Note 2: X = frequency weighting
A or B. ‘A’ requires that the
Broadband (excl. Peak)
parameter is set to AC or AZ. ‘B’
requires that the Broadband
(excl. Peak) parameter is set to
BC or BZ
APPENDIX D
Preferences
Table D.5
171
(Cont.) Headphone settings parameters
Parameter
Values
Comment
Automatic Gain Control
On
Off
To ease identification of sound
sources, the gain can be
automatically adjusted to keep
the average level within a 40 dB
range. You will hear clearly the
whole signal content, whether
the level has been 20 dB or
140 dB
Set Automatic Gain Control to
On to convert the signal at the
headphone output
Set Automatic Gain Control to
Off for listening to the signal with
a fixed gain
Gain for Meas.Signal
– 80.0 dB to 60.0 dB for
Automatic Gain Control set to
Off
Key in a gain value (0.1 dB
resolution) for the measurement
input signal. Use ‘@’ to assign
the new value for immediate
response at the output – or use
the up/down navigation keys to
increment/decrement the value
in steps of 1 dB
Note: 0 dB means 1 V output for
1 V input (Automatic Gain
Control set to Off)
– 60.0 dB to 0.0 dB for
Automatic Gain Control set to
On
Gain for Annotations
–60.0 dB to 60.0 dB
Key in a gain value (1.5 dB
resolution) for the commentary
annotations. Use ‘@’ to assign
the new value for immediate
response at the output – or use
the up/down navigation keys to
increment/decrement the value
in steps of 1.5 dB
Note: If you do not want to listen to the input signal, then set ‘Listen to Signal’ = No, to
economise on power.
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D.6
Printer Settings
Table D.6
Printer settings parameters
Parameter
Printer Used
Values
None
MPS
PCL
PCL Inkjet
PCL Laser
Seiko DPU
Comment
Select None if you don’t have a
printer connected to 2250 Light
Select MPS for a Mobile Pro
Spectrum thermal printer from
AM-TECH
Select PCL for a printer
accepting PCL printer language
Select PCL Inkjet for an inkjet
printer accepting PCL language
Select PCL Laser for a laser
printer accepting PCL language
Select Seiko DPU for the DPUS245 or DPU-S445 thermal
printer model from Seiko
Instruments.
See Chapter 8 for more details
Top Margin
0.0 to 20.0 cm
Use Top Margin to position the
print on the paper
Left Margin
0.0 to 20.0 cm
Use Left Margin to position the
print on the paper
Width
1.0 to 15.0 cm
Use Width to set the size of the
print
Height
1.4 to 20.0 cm
Use Height to set the size of the
print
APPENDIX D
Preferences
D.7
Modem/DynDNS Settings
Table D.7
Modem/DynDNS settings parameters
Parameter
Modem
Values
Disabled
GPRS/EDGE/HSPA Dialup
Comment
Set to Disabled if you do not have a modem
connected; if you have connected a modem,
but only want to use the SMS facility of the
modem; or, when you physically connect or
disconnect the modem.
Set to GPRS/EDGE/HSPA Dialup if you have a
GPRS/EDGE/HSPA modem connected and
you want the analyzer to be connected to the
Internet.
See Chapter 7 and Chapter 8 for more details
Dialup Networking
APN
<string of characters>
Access Point Name is an identifier required by
the Network Operator. Examples are ‘internet’,
‘public’ and ‘www.vodaphone.de’. Please
consult your network operator
User Name
<string of characters>
Set User Name as required by your network
operator. Typically this can be left empty
Password
<string of characters>
Set Password as required by your network
operator. Typically this can be left empty
Domain
<string of characters>
Set Domain as required by your network
operator. Typically this can be left empty
Active
No
Yes
Set to Yes to make the update of IP-address at
DynDNS.com active.
Set to No if you don't use this service.
Hostname
<string of characters>
Set the Hostname defined in your account at
DynDNS.com
User Name
<string of characters>
Set the User Name for your account at
DynDNS.com.
Password
<string of characters>
Set the Password for your account at
DynDNS.com. The password will be displayed
until you press Enter, then it will be replaced by
‘***’
DynDNS
173
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Hand-held Analyzer 2250 Light – User Manual
D.8
Network Settings
Table D.8
Network settings parameters
Parameter
Values
Comment
Location
Up to 20 characters
Use Location to specify a text identifying
the analyzer or location of the analyzer.
The Location will be displayed on the PC
together with the serial number of the
analyzer when browsing for analyzers in
BZ-5503, and when connected using the
on-line display
Network Connection
None
CF Socket
LAN Socket
Set to None if no Ethernet CF Card is
present in CF Socket
Set to CF Socket if Ethernet CF Card is
present in CF Socket (hardware versions
1 – 3 only)
Set to LAN Socket if you want to use the
built-in LAN Socket on hardware version 4
Set IP Address
Automatically
Manually
Set to Automatically to obtain an IP
address from a DHCP server - if no server
available, then a Link-local address will be
set
Set to Manually to set the IP address,
Subnet Mask, Default Gateway, Preferred
DNS and Alternate DNS manually
IP Address
xxx.xxx.xxx.xxx
The IP address of the instrument
Selectable if Set IP Address = Manually
Subnet Mask
xxx.xxx.xxx.xxx
The Subnet Mask combined with the IP
address identifies the network segment the
analyzer is on
Selectable if Set IP Address = Manually
Default Gateway
xxx.xxx.xxx.xxx
Address to a gateway for routing to
another network
Selectable if Set IP Address = Manually
Preferred DNS
xxx.xxx.xxx.xxx
The IP address of the primary DNS server
Alternate DNS
xxx.xxx.xxx.xxx
The IP address of the secondary DNS
server
APPENDIX D
Preferences
Table D.8
(Cont.) Network settings parameters
Parameter
Values
Comment
Name
Up to 32 characters
Name (SSID) of network you want to
connect to. Update the name either by
entering a name directly, or by tapping on
the Available Networks and selecting a
name from the list
Security
Open
Shared
WPA PSK
WPA2 PSK
Select security as required by the
network
Open and Shared are for WEP (Wired
Equivalent Privacy) Infrastructure mode
WPA PSK is for WPA (Wi-Fi Protected
Access) with Pre-shared Key (also called
Personal mode)
WPA2 PSK – WPA2 is an enhanced
version of WPA
Encryption
None
WEP Enabled
AES Enabled
TKIP Enabled
Select Encryption as required by the
network
None is for Open security
WEP Enabled is for Open and Shared
security. AES and TKIP Enabled are for
WPA PSK and WPA2 PSK
Encryption Key
Up to 32 characters
Insert the encryption key required by the
network. The key will be displayed until
you press Enter, then it will be replaced by
‘***’
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D.9
Notification Settings
Table D.9
Notification settings parameters
Parameter
Values
Comment
Notification
Disabled,
E-mail,
SMS
Set to Disabled to disable notifications.
Set to E-mail to send notifications as email when an
alarm occurs.
Set to SMS to send notifications as SMS when an
alarm occurs.
See section 8.4 for the list of alarm types
Daily Status
Enable
Disable
Set to Enable to send a notification once per day
Send at
00:00:00 to 23:59:59
Determines the time of day to send the daily status
notification
Internal Battery
High,
Low,
Critical
A notification is sent, if internal battery enters the set
state
Disk Space
0% to 100%
A notification is sent, if free disk space drops to or
below this setting
To
<string of characters>
The email address of the recipient of the email.
Example:
recipient@gmail.com
Note: To find the @ symbol, click <Ctl+>
SMTP
<string of characters>
Name of SMTP (Simple Mail Transfer Protocol)
Server.*
Examples:
gmail:
smtp.gmail.com
hotmail: smtp.live.com
SMTP Port
0 to 65535
Port used by SMTP Server.*
Typically this is 25, but for Gmail and Hotmail it is
587
SSL/TLS
No,
Yes
Secure Socket Layer/Transport Layer Security.
Set to Yes if required by email provider*, otherwise
No.
SSL/TLS is required by Gmail/Google Mail and
Microsoft® Hotmail®
Alarm Settings
Email
APPENDIX D
Preferences
Table D.9
(Cont.) Notification settings parameters
Parameter
Values
Comment
Account
<string of characters>
The account is typically the email address of the
email used for sending the email.*
Examples:
myaddress@gmail.com
myaddress@hotmail.com
User Name
<string of characters>
The User Name is typically the email address of the
email used for sending the email.*
Examples:
myaddress@gmail.com
myaddress@hotmail.com
If the email account is part of a domain, then it might
be necessary to specify the domain as part of the
user name
Example:
Domain\UserName
Password
<string of characters>
Insert the password required for the account.* The
password will be displayed until you press <Enter>,
then it will be replaced by ‘***’
Active
No,
Yes
Set to Yes to activate the first phone number,
otherwise set to No
Name
<string of characters>
Name identifying first phone number
Phone Number
Number
The number of the first SMS recipient
Active
No,
Yes
Set to Yes to activate the second phone number,
otherwise set to No
Name
<string of characters>
Name identifying second phone number
Phone Number
Number
The number of the second SMS recipient
SMS
* Please consult your email provider
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D.10 Remote Access Settings
Table D.10
Remote access settings parameters
Parameter
Values
Comment
Web Server
Disabled
Enabled
Set Web Server to Enabled to enable display and
control of the analyzer on a web page - see section
7.4.
Set to Disabled to disable the web server
functionality
BZ-5503 Login
Required
Yes
No
Set to Yes to require user name and password for
access to the instrument from BZ-5503 MPS or
from the 2250/2270 SDK. Set to No for free access
to the instrument.
Note: If set to Yes, then you require BZ-5503
version 4.1 or higher to access the instrument
User Name
<string of characters>
Define the User Name required for full access to
the web page, that is, view and control of the
analyzer, and for access from BZ-5503 MPS and
2250/2270 SDK.
Default: admin
Password
<string of characters>
Define the password required for full access to the
web page, and for access from BZ-5503 MPS and
2250/2270 SDK. The password will be displayed
until you press Enter, then it will be replaced by
‘***’.
Default: admin
Guest Login Required
Yes
No
Set to Yes to require user name and password for
login to the guest web page. Set to No for free
access to the guest web page.
Guest User Name
<string of characters>
Define the user name required for limited access to
the web page, i.e. view of the instrument only
Default: guest
Guest Password
<string of characters>
Define the password required for limited access to
the web page. The password will be displayed until
you press <Enter>, then it will be replaced by ‘***’
Default: guest
D.11 NMT Server Settings (Hardware Version 4 only)
For set up of NMT Server communication used by Noise Monitoring Software BZ-7232, see
User Manual for Noise Monitoring Terminal Types 3639-A, B and C, BE 1818.
179
Appendix E
Glossary
A-weighting Filter:
Frequency weighting corresponding approximately to the 40 dB equal
loudness curve, that is to say, the human ear’s response at low to medium
sound levels. It is by far the most commonly applied frequency weighting
and is used for all levels of sound.
B-weighting Filter:
Frequency weighting corresponding approximately to the 70 dB equal
loudness curve, that is to say, the human ear’s response at medium sound
levels.
C-weighting Filter:
Frequency weighting corresponding to the 100 dB equal loudness curve, that
is to say, the human ear’s response at fairly high sound levels. Mainly used
when assessing peak values of high sound pressure levels.
Criterion Level:
Criterion Level is the maximum averaged sound level allowed for an 8-hour
period. Used for calculation of Dose, ProjDose, DoseUQ and ProjDoseUQ,
where U = F or S and Q = 4, 5 or 6 dB.
Decibel (dB):
The measurement unit for expressing the relative intensity of sound. A direct
application of linear scales (in Pa) to the measurement of sound pressure
leads to large and unwieldy numbers. As the ear responds logarithmically
rather than linearly to stimuli, it is more practical to express acoustic
parameters as a logarithmic ratio of the measured value to a reference value.
This logarithmic ratio is called a decibel or dB. The advantage of using dB
can be clearly seen in the below illustration. Here, the linear scale with its
large numbers is converted into a manageable scale from 0 dB at the
threshold of hearing (20 Pa) to 130 dB at the threshold of pain (100 Pa).
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Our hearing covers a surprisingly wide range of sound pressures – a ratio of over a million to one. The
dB scale makes the numbers manageable
Dose, ProjDose:
The Noise Dose is the equivalent averaged A-weighted Noise Level (taking
the Threshold Level into account) using Exchange Rate = 3 for an 8 hour
period (reference duration) relative to the maximum allowed (the Criterion
Level) – expressed in percentage.
Example: If the Criterion Level is 85 dB and a person is exposed to a constant
sound pressure level of 85 dB for 8 hours, then the Dose is 100%. A constant
level 88 dB results in a Dose of 200% and a constant level of 82 dB results
in a dose of 50%.
The Projected Dose is the Noise Dose based on measurement duration less
than 8 hours, assuming the sound level for the remaining time stays the same.
APPENDIX E
Glossary
DoseUQ, ProjDoseUQ:
The Noise Dose is the averaged A-weighted Noise Level (taking the
Threshold Level into account) with Time Weighting U = F or S and Exchange
Rate Q = 4, 5 or 6 for an 8 hour period (reference duration) relative to the
maximum allowed (the Criterion Level) – expressed in percentage.
Example: If the Criterion Level is 90 dB and a person is exposed to a constant
average sound level of 90 dB for 8 hours with Time Weighting S and
Exchange Rate 5, then the DoseS5 is 100%. A constant level 95 dB results
in a DoseS5 of 200% and a constant level of 85 dB results in a doseS5 of
50%.
The Projected DoseS5 is the Noise DoseS5 based on measurement duration
less than 8 hours, assuming the sound level for the remaining time stays the
same.
E:
Sound Exposure is the energy of the A-weighted sound calculated over the
measurement time. The unit is Pa2h.
Exchange Rate:
Exchange Rate is the increase in noise level that corresponds to a doubling
of the noise level. The Exchange Rate is used for calculation of LavUQ, TWA,
TWAv, DoseUQ and ProjDoseUQ, where U = F or S and Q = Exchange
Rate: 4, 5 or 6 dB.
Note: LAeq is always based on an Exchange Rate = 3.
Exposure Time:
Exposure Time is the actual time that a person is exposed to noise during
a workday. Used for calculation of Lep,d and Lep,d,v.
‘F’, ‘S’ or ‘I’ Time
Weighting:
A time weighting (sometimes called a ‘time constant’) defines how the
exponential averaging in root-mean-square (RMS) measurement is done. It
defines how the heavily fluctuating sound pressure variations are smoothed
or averaged to allow useful readings. The standards define three time
weightings: F (Fast), S (Slow) and I (Impulse). Most measurements are
carried out using the ‘F’ time weighting, which uses a 125 ms time constant.
Frequency:
The number of pressure variations per second. Frequency is measured in
hertz (Hz). The normal hearing for a healthy young person ranges from
approximately 20 Hz to 20000 Hz (20 kHz).
Frequency Weighting:
Our hearing is less sensitive at very low and very high frequencies. In order
to account for this, weighting filters can be applied when measuring sound.
The most commonly used weighting is the ‘A-weighting’, which approximates
the human ear’s response to low – medium noise levels.
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Frequency Weighting
(contd.):
A ‘C-weighting’ curve is also used, particularly when evaluating very loud or
low-frequency sounds.
Lp (dB)
0
A
C
–20
–40
–60
10
20
50
100 200 500
1k
2k
5k
10k 20k
Frequency
(Hz)
000055
LAE:
Sound Exposure Level – sometimes abbreviated SEL and sometimes called
Single Event Level, is the Sound Exposure expressed as a level. The letter
'A' denotes that the A-weighting has been included.
LAeq:
A widely used noise parameter that calculates a constant level of noise with
the same energy content as the varying acoustic noise signal being
measured. The letter ‘A’ denotes that the A-weighting has been included and
‘eq’ indicates that an equivalent level has been calculated. Hence, LAeq is
the A-weighted equivalent continuous noise level.
LXeq,T,mov and Leq,T,mov: Moving (or sliding) X-weighted average (equivalent continuous noise level)
for the latest T minutes. Updated every second during measurement. The
parameter can be used to monitor the average noise level within T minutes,
for example, to monitor that the noise level during a music event doesn't
exceed a certain limit at any 15 minutes of observation time during the event.
The value is equal to LXeq at the start of the measurement as long as the
elapsed time less than or equal to T. Two values with frequency weighting
X = A and C are measured simultaneously. ∆Leq,T,mov is calculated as the
difference between LCeq,T,mov and LAeq,T,mov
LXeq,T,mov,max and
Leq,T,mov,max:
The maximum of the Lxeq,T,mov values during the measurement, only taking
values into account where elapsed time is greater than or equal to T. Two
values with frequency weighting X = A and C are measured simultaneously.
∆Leq,T,mov,max is calculated as the difference between LCeq,T,mov,max and
LAeq,T,mov,max
LAF:
The instantaneous time-weighted sound level, Lp, is available at any time.
‘A’ denotes that the A-frequency weighting is used. ‘F’ denotes that the Fast
time-weighting is used.
LAFmax:
Maximum time-weighted sound level measured with A-frequency weighting
and Fast time weighting. It is the highest level of environmental noise
occurring during the measurement time. It is often used in conjunction with
another noise parameter (for example LAeq) to ensure a single noise event
does not exceed a limit.
APPENDIX E
Glossary
LAFmin:
Minimum time-weighted sound level measured with A-frequency weighting
and Fast time weighting. It is the lowest level of environmental noise occurring
during the measurement time (time resolution is 1 s).
LAF90.0:
The noise level exceeded for 90% of the measurement period with A-frequency
weighting and Fast time weighting. The level is based on statistical analysis of
a parameter (LAF or LAS) sampled at 10 ms intervals into 0.2 dB wide classes.
The percentage is user-definable.
An analysis of the statistical distributions of sound levels is a useful tool when
assessing noise. The analysis not only provides useful information about the
variability of noise levels, but is also prominent in many standards as the
basis for assessing background noise. For example, LAF90 is used as an
indicator of background noise levels while LAF10 or LAF5 are sometimes used
to indicate the level of noise events.
The noise level exceeded for 90% of the measurement period with A-frequency
weighting. The level is based on statistical analysis of LAeq sampled at 1 s
intervals into 0.2 dB wide classes. The percentage is user-definable.
LA90.0:
LAF(SPL):
The Sound Pressure Level (maximum time-weighted sound level during the
latest second) is available at any time. 'A' denotes that the A frequency
weighting is used. 'F' denotes that the Fast time-weighting is used.
LAFTeq:
Taktmaximal Mittelungspegel as defined by DIN 45641. LAFTeq has also been
called LAFTm5 or LATm5F.
LavUQ:
Average Sound Level with Time Weighting U = F or S and Exchange Rate
Q = 4, 5 or 6. This is a widely used occupational health noise parameter in
the USA, corresponding to the LAeq used otherwise.
LCpeak:
Maximum peak sound level during a measurement. ‘C’ denotes that the C
frequency weighting is used. Used for assessing possible damages to human
hearing caused by very high short-duration noise levels.
LCpeak,1s:
Maximum peak sound level during the latest second – is available at any
time. 'C' denotes that the C frequency weighting is used. Used for monitoring
the peak levels.
Lep,d:
The Daily Noise Exposure Level is the average A-weighted noise exposure
level for a nominal 8-hour working day. Lep,d is also known as LEX,8h. Lep,d
is calculated from the measured LAE, the setting of Exposure Time and a
Reference time of 8 h. Used for assessing the noise exposed to a worker
during a working day – in accordance with ISO standards.
The European Noise at Work Directive 2003/10/EC defines the following limit
and action values:
Exposure Limit Value: 87 dB
Upper Exposure Action Value: 85 dB
Lower Exposure Action Value: 80 dB
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Lep,d,v:
The Daily Noise Exposure Level for a user-defined reference period. Lep,d,v
is calculated from the measured LAE and the settings of Exposure Time and
Reference Time. Used, for example, for calculating a Weekly Noise Exposure
Level, by setting the Reference Time to 40 h.
Loudness, Loudness
Level:
Loudness is the subjective judgement of intensity of a sound by humans.
Loudness depends upon the sound pressure and frequency of the stimulus
and whether the sound field is diffuse- or free-field. The unit is the Sone.
Loudness Level = 10*log2(Loudness) + 40. The unit is the Phone.
The Zwicker method of calculation of stationary loudness based on 1/3-octave
measurements is described in ISO 532 – 1975, Method B.
#CPeaks(>140dB):
The number of 1 s peak sound levels over 140 dB. ‘C’ denotes that the
C-frequency weighting is used.
Three peak counters are available – one with a user-definable value (set to
140 dB by default), one with 137 dB and one with 135 dB value. Used for
assessing possible damage to human hearing caused by very high, shortduration, noise levels.
The European Noise at Work Directive 2003/10/EC defines the following limit
and action values:
Limit Value: 140 dB corresponding to 200 Pa
Upper Action Value: 137 dB corresponding to 140 Pa
Lower Action Value: 135 dB corresponding to 112 Pa
NC, NC Decisive Band:
Noise Criteria is used to rate steady-state continuous noise in a room from
all types of equipment, including fans, mixing boxes, diffusers, etc.
The rating is determined from 1/1-octave LZeq spectra compared with NC
curves (based on equal loudness curves). The NC rating is the value of the
rating curve that falls entirely above the measured data. The Decisive Band
is the frequency band ‘touching’ the NC curve.
Defined in ANSI 12.2–2008
NCB, NCB Classification, Balanced Noise Criteria is a refinement of NC.
Rumble, Hiss, RV:
The rating is determined by the SIL value and gets the Classification (R) for
Rumble, if the spectrum is rich in low frequency sound (16 Hz to 500 Hz),
the Classification (H) for Hiss, if the spectrum is rich in high frequency sound
(1 kHz to 8 kHz), or the Classification (RV) for Vibration and Rattle if the
spectrum at low frequencies (16 Hz to 63 Hz) is likely to produce audible
rattling in lightweight building elements.
The details of the NCB rating are defined in ANSI S12.2-1995
NR, NR Decisive Band:
Noise Rating rates noise levels at public or private indoor areas.
The rating is determined from 1/1-octave LZeq spectra compared with NR
curves (based on equal loudness curves). The NR rating is the value of the
highest NR curve ‘touched’ by the measured spectrum. The Decisive Band
is the frequency band ‘touching’ the NR curve.
Defined in ISO R1996(1971)
APPENDIX E
Glossary
Occupational Health
Standards:
Table E.1
Typical Setup Parameter settings for Occupational Health measurements in
accordance with various standards:
• OSHA (Occupational Safety and Health Administration) – 29 CFR 1910.95
• MSHA (Mine Safety and Health Administration) – 30 CFR 62.0 UMHRPEL
• DOD (Department of Defence) – DoD Instruction 6055.12
• ACGIH (American Conference of Government Industrial Hygienists) –
DHHS Pub 98-126
• ISO – UK Noise at Work Regulations SI 1989/1790 amended by
SI 1992/2966 and SI 1996/341
See the table below, but please also check your local legislation.
Occupational Health Setup Parameters and Associated Standards
Setup Parameters
OSHA
MSHA
DOD
ACGIH
ISO
Broadband (excl. Peak)
A
A
A
A
A
Broadband Peak
Z
Z
Z
Z
C
N/A
N/A
N/A
8:00:00
8:00:00
Reference Time (Preset)
8:00:00
8:00:00
8:00:00
8:00:00
8:00:00
Reference Time (user-definable)
40:00:00
40:00:00
40:00:00
40:00:00
40:00:00
80
80
80
80
70
90
90
85
85
85, 90
140
140
140
140
140
Exchange Rate for Lav
5
5
4
N/A
N/A
Weighting for Lav
S
S
S
N/A
N/A
Exposure Time
Threshold Level
Criterion Level
*
PeaksOver Level
*. This is user-definable – the two other ‘PeaksOver Level’ parameters are preset to 137 and 135 dB resp.
Reference Time:
Reference Time is used for calculation of Sound Exposure Level Lep,d,v or
Time Weighed Average TWAv with a reference time other than 8 hours.
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RC, RC Classification:
The Room Criterion Mark II is primarily a diagnostic tool for HVAC noise in
spaces.
The RC curve is chosen as the value of the PSIL, rounded to the nearest
integer, in the range 25  RC  50.
The RC classification is the combination of the Sound Quality Descriptor and
the Probable Occupant Evaluation.
The sound quality descriptor can display the values (N) for neutral, where
no frequency range is dominant; (LF) for rumble, where the low-frequency
range (16 – 63 Hz) is dominant; (MF) for roar, where the mid-frequency range
(125 – 500 Hz) is dominant; and (HF) for hiss, where the high-frequency
range (1000 – 4000 Hz) is dominant. Furthermore, there are two variations
of (LF) if the spectrum in the low-frequency range is likely to introduce
vibrations: (LFVA), where there are clearly perceptible vibrations and (LFVB),
where there are moderately perceptible vibrations.
The probable occupant evaluation describes how an occupant responds to
a spectrum and can have the values Acceptable, Marginal or Objectionable.
Described in the ASHRAE Handbook – HVAC 2011 and ANSI 12.2–2008.
Room Criteria is for rating room noise
SIL, PSIL, SIL3:
SIL (Speech Interference Level) is the arithmetic average of the 500 Hz,
1 kHz, 2 kHz and 4 kHz octave band levels.
PSIL (Preferred Speech Interference Level) is the arithmetic average of the
500 Hz, 1 kHz and 2 kHz octave band levels.
Used for evaluating the interference of noise upon speech communication.
SIL3 (Speech Interference Level based on highest 3 octaves) is the arithmetic
average of the 1 kHz, 2 kHz and 4 kHz octave band levels.
Note: Though SIL, PSIL and SIL3 are defined for octave band levels they
are also calculated for 1/3-octave band levels by summing the power values
in the three bands within each octave before doing the averaging.
Sound:
Any pressure variation that the human ear can detect. Just like dominoes, a
wave motion is set off when an element sets the nearest particle of air into
motion. This motion gradually spreads to adjacent air particles further away
from the source. Depending on the medium, sound extends and affects a
greater area (propagates) at different speeds. In air, sound propagates at a
speed of approximately 340 m/s. In liquids and solids, the propagation velocity
is greater – 1500 m/s in water and 5000 m/s in steel.
Sound level or sound
pressure level:
The level in decibels of the pressure variation of a sound. See also decibel.
Std.Dev.
The Std.Dev. is calculated as the Standard Deviation of the noise samples
used for statistics. This is either LAF or LAS sampled every 10 ms or LAeq
sampled every second.
TCpeak:
The time when the peak sound level occurred. ‘C’ denotes that the
C-frequency weighting is used.
APPENDIX E
Glossary
Threshold Level:
Any sound levels below the threshold level do not contribute to the Dose
measurement data. For example, if you set the threshold level to 80, any
sound levels below 80 dB are not taking into consideration by the instrument,
when it calculates doses and time weighted averages.
Used for calculation of Dose, ProjDose, TWA, TWAv DoseSQ, ProjDoseSQ.
TWA:
The Time Weighted Average is the average A-weighted sound level for a
nominal 8-hour working day with Time Weighting S and Exchange Rate 5.
TWA is calculated from the measured LavS5 (taking Threshold Level into
account) and a Reference time of 8 h. Mainly used in the USA for assessing
the noise exposure for a worker during a working day.
TWAv:
The Time Weighted Average for a user-defined reference period. TWAv is
calculated from the measured LavS5 (taking Threshold Level into account)
and the Reference Time. Used, for example, for calculating a Weekly Time
Averaged Level by setting the Reference Time to 40 h.
Underrange
Immediate underrange indicates that the broadband sound level is below
the lower limit of the Linear Operating Range and is indicated separately for
the two selectable frequency weightings.
Immediate underrange is only indicated on the screen. No underrange
information is saved with the final result of the measurement.
The underrange indication is implemented as required by ISO 61672–1:2013
and does not account for the influence of self-generated noise from the
microphone because the specifications for the lower limit of the Linear
Operating Range apply for measurements of electrical signal inserted into
the preamplifier through the applicable input device. This makes the
underrange indication a dubious indicator of the quality of the measurement.
Example: Und. A – Immediate underrange for the A-weighted levels
Z-weighting:
‘Zero’- frequency weighting is without any frequency weighting, that is,
equivalent to Linear, LIN or FLAT.
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189
Index
Symbols
#CPeaks(>140dB) .................................................. 184
Numerics
1/1- or 1/3-octave Frequency Analysis ..................... 91
1/1-octave Frequency Analysis Software
BZ-7131 ........................................................ 27, 91
1/3-octave Frequency Analysis Software
BZ-7132 ........................................................ 27, 91
1/3-octave Method .................................................. 117
4231 Sound Calibrator.............................................. 40
4950 Microphone .......................................... 8, 13, 43
4952........................................................................ 166
7820 Evaluator.......................................................... 55
7825 Protector .......................................................... 55
A
About Menu ................................................................ 3
About the Analyzer ................................................... 28
Accept Pushbutton............................................... 5, 36
Accredited Calibration........................................ 44, 88
Acoustic Calibration .................................................. 39
Adaptor AO-0657................................................. 8, 64
Adaptor UA-1673 ........................................................ 6
Add Timer ................................................................. 77
Alarm Settings Parameters..................................... 176
All Events................................................................ 111
Alternative Measurement Method............................. 13
Analyzer
About ................................................................... 28
Advanced use ...................................................... 59
Care, Cleaning and Storage ................................ 89
Connect to BZ-5503...................................... 53, 65
Connect via DynDNS........................................... 67
Connect via LAN.................................................. 68
Connect via Modem............................................. 65
Control via Internet .............................................. 56
Cover ..................................................................... 6
Description........................................................... 25
Downgrade Software ........................................... 82
Handling of .......................................................... 89
Inputs and Outputs ................................................ 6
Microphone............................................................ 5
Mounting onto Tripod .......................................... 13
Preamplifier ........................................................... 5
Reinstall Software ............................................... 87
Reset to Default..........................................7, 9, 85
Set up for Internet Connection ............................ 56
Switching Off ....................................................... 23
Switching On ....................................................... 17
Timers ................................................................. 76
Update Software via BZ-5503 ............................. 79
Update Software via Internet............................... 80
Using the Microphone Holder.............................. 14
Annotations
Add GPS Note..................................................... 22
Add Signal Recording........................................ 107
Viewing or Listening ............................................ 52
AO-0657 USB Adaptor ..................................8, 64, 75
AO-0697 Microphone Extension Cable ............... 8, 14
AO-1476 Mini USB Cable........................................... 7
AO-1494 Micro USB Cable ........................................ 7
Applications
Install ................................................................... 79
Update or Upgrade.............................................. 79
Applying Tone Assessment.................................... 125
Archive Data............................................................. 29
Assembling your 2250 Light ....................................... 3
Asterisk
Next to Project Name .......................................... 21
Next to Template ................................................. 16
Automatic Event ..................................................... 110
Automatic Gain Control Parameter ............... 148, 171
Automatic Level Detection........................................ 44
Automatic Measurements......................................... 76
Automatic Recording .............................................. 110
Auto-naming of Projects Parameter ....................... 170
A-weighting............................................................... 25
Filter (definition)................................................. 179
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B
Back-erase Pushbutton .................................5, 35, 99
Backlight
Brightness ........................................................... 61
Icon ..................................................................... 34
Settings ............................................................... 60
Backlight Brightness Parameter ............................. 167
Backlight Dim Parameter........................................ 168
Bandwidth Parameters ........................................... 141
Battery ........................................................................ 6
Charge Indicator................................................7, 9
Charging for the First Time ................................. 12
Icon ..................................................................... 34
Status .................................................................... 9
Troubleshooting .................................................. 84
Battery Pack QB-0061.............................................. 12
Bottom F. for Special Leq Parameter ..................... 141
Brightness Setting ..............................................60, 61
Broadband
Parameters................................................145, 159
Broadband Parameter ............................................ 140
Broadband Peak Parameter................................... 140
Broadband Statistics Parameter............................. 141
Broadband View ....................................................... 19
B-weighting
Filter (definition) ................................................ 179
BZ-5298 Environmental Software DVD.................... 29
BZ-5503 Measurement Partner................................ 54
Connect to Analyzer ......................................55, 65
Internet Connection ............................................. 53
Play Back Signal Recordings ............................ 115
Update Software ................................................. 79
USB Connection.................................................. 53
What is ................................................................ 29
BZ-5503-A Logging Module ..................................... 55
BZ-5503-B Spectrum Module................................... 55
BZ-7130 Sound Level Meter Software ..................... 26
BZ-7131 1/1-octave Frequency Analysis
Software ........................................................27, 91
BZ-7132 1/3-octave Frequency Analysis
Software ........................................................27, 91
BZ-7133 Logging Software.................................27, 97
BZ-7226 Signal Recording Option....................28, 107
BZ-7231 Tone Assessment Option ..................28, 117
C
Calculating Level Difference................................... 119
Calibration ................................................................ 39
Accredited .....................................................44, 88
Acoustic............................................................... 39
Certified ............................................................... 88
CIC ...................................................................... 45
Details ..................................................................41
Electrical ..............................................................39
History..................................................................42
History Parameters ............................................165
Initial.....................................................................88
Interval .................................................................45
Last Date..............................................................45
Manual .................................................................40
Nominal Sensitivity...............................................44
of Filters ...............................................................88
Procedures...........................................................40
Reminder .............................................................44
Screen..................................................................32
Settings ................................................................41
Setup Parameters ..............................................166
Sound Calibrator ..................................................40
Standard ..............................................................40
Traceable .............................................................44
Care of Analyzer .......................................................89
Certified Cailbrations.................................................88
CF Card
Slot.................................................................... 7, 9
Troubleshooting ...................................................82
CF WLAN Card UL-1019 ..........................................69
Changing
Broadband Weighting ..........................................20
Parameter Values ................................................36
the Template ........................................................18
Character Keyboard..................................................38
Charge Indicator .................................................... 7, 9
Charge Injection Calibration............................... 39, 45
Performing ...........................................................46
with Logging.........................................................99
Charge Injection Calibration Parameter..................143
Charging
for the First Time..................................................12
Check for Updates ....................................................80
CIC..................................................................... 39, 45
Ref. Date..............................................................46
Reference Ratio ...................................................46
CIC Ratio ........................................................... 45, 46
CIC Result...............................................................100
Parameters ........................................................156
Cleaning of Analyzer.................................................89
Clock Display ............................................................34
Close View ................................................................28
Cold Start ..................................................................17
Compact Flash
Slot for............................................................... 7, 9
Compact Flash Modems ...........................................67
Compliance with Standards ....................................137
INDEX
Connecting
GPS Receivers .................................................... 74
Microphone Extension Cable............................... 14
Preamplifier.......................................................... 13
to Mobile/Smart Phone ........................................ 53
to PC.................................................................... 53
via Dialup ............................................................. 65
via DynDNS ......................................................... 67
via LAN ................................................................ 68
via LAN Modem ................................................... 65
via Network .......................................................... 53
Weather Stations ................................................. 74
Wired ................................................................... 68
Wireless ............................................................... 68
Connection Overview................................................ 54
Controlling
Logging .............................................................. 100
Measurement................................................ 19, 35
Recording .......................................................... 109
Conventions Used in this Manual ............................... 1
Copy/Paste Jobs and Projects.................................. 51
Correction
Microphone .......................................................... 44
Cover for Analyzer ...................................................... 6
Criterion Level......................................................... 179
Criterion Level Parameter....................................... 150
Current Transducer Parameters ............................. 163
C-weighting............................................................... 25
Filter (definition) ................................................. 179
D
Data Management .................................................... 49
Data Problems .......................................................... 83
Data Viewer .............................................................. 52
Date Format Parameter .......................................... 169
Date Separator Parameter...................................... 169
Decibel (dB) ............................................................ 179
Decimal Places
Number of .......................................................... 167
Decimal Point Parameter........................................ 169
Default Measurement Job/Path ................................ 51
Deleting
Jobs and Projects ................................................ 51
Templates ............................................................ 87
Timer.................................................................... 77
Users ................................................................... 87
Dialup Networking..................................................... 65
Parameters ........................................................ 173
Digits......................................................................... 37
Dim Backlight............................................................ 60
Dimension Unit Parameter...................................... 169
191
Dimensions............................................................... 63
Disconnecting Microphone ....................................... 13
Display........................................................................ 5
Description .......................................................... 32
Frequency Analysis Results ................................ 92
Locking ................................................................ 38
Logging Results................................................. 100
Tone Assessment Results................................. 122
Display Settings........................................................ 59
Parameters........................................................ 167
Document Measurement .......................................... 22
Dose ....................................................................... 180
DoseUQ.................................................................. 181
Downgrade Software................................................ 82
Duration Limit Parameter ....................................... 149
DVD.......................................................................... 29
DynDNS Settings .............................................. 65, 67
Parameters........................................................ 173
E
Earphone Socket................................................... 7, 8
Earphones HT-0015 ................................................... 7
EH-2152 ................................................................. 164
Elapsed Time ........................................................... 34
Parameters........................................................ 154
Electrical Calibration................................................. 39
E-mail Settings Parameters.................................... 176
Entering
a Character.......................................................... 38
a Number............................................................. 37
Environmental Settings ............................................ 74
Environmental Software DVD BZ-5298.................... 29
Equivalent Continuous Sound Level ........................ 25
Parameters............................................... 154, 157
Ethernet Cable ......................................................... 68
Ethernet CF Card UL-1016 ............................... 65, 69
Evaluator Type 7820 ................................................ 55
Events ...................................................................... 99
Exchange Rate....................................................... 181
Exchange Rate for Lav Parameter ......................... 150
Exclude Event ........................................................ 110
Exclude Marker ...................................................... 104
Explorer .......................................................31, 50, 52
Exposure Time ....................................................... 181
Exposure Time Parameter ..................................... 149
Ext. Power ................................................................ 60
Ext. Power Parameter ............................................ 168
Extended Microphone .............................................. 13
Extension Cable ....................................................... 14
External Devices ........................................................ 8
External Event ........................................................ 108
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F
I
Fast Time Weighting ................................................ 25
FB-0679 Hinged Cover............................................... 6
Feedback............................................................34, 36
File Format ............................................................... 82
File Speed ................................................................ 82
Filter Calibration ....................................................... 88
Fitted/Diffuse Field Icons.......................................... 34
Frequency (definition)............................................. 181
Frequency Analysis
1/1- or 1/3-octave ................................................ 91
Settings ............................................................... 91
Frequency Analysis Software
Calculated Parameters........................................ 95
Controlling Measurement .................................... 92
Displaying Results............................................... 92
Save Results ....................................................... 96
Smileys................................................................ 96
Spectrum View .................................................... 93
with Signal Recordings...................................... 107
Frequency Weighting ................................20, 25, 181
Parameters................................................140, 153
Full Statistics Parameter ........................................ 143
Icons
Backlight ..............................................................34
Battery Status ................................................. 9, 34
Fitted/Diffuse Field ...............................................34
Help......................................................................28
Loudspeaker ........................................................52
Main Menu ...........................................................29
Mains Power Connected........................................9
Overload ..............................................................34
Paused Measurement..........................................34
PC ........................................................................33
Power Supply.......................................................34
Recording...........................................................109
Running Measurement.........................................34
Stopped Measurement.........................................34
Windscreen ..........................................................34
IEC 61672–1 .............................................................12
Impulse Time Weighting ...........................................25
Indicator ......................................................................5
Brightness ............................................................60
Recalibrating ........................................................84
Status...................................................................36
Initial Calibration .......................................................88
Input
Parameters ........................................................139
Socket ........................................................ 7, 8, 10
Trigger..................................................................10
Install
Licenses...............................................................29
New Applications .................................................79
Instantaneous GPS Data Parameters.....................159
Instantaneous Measured Parameters.............. 27, 159
Instantaneous GPS Data ...................................159
Instantaneous Measured Spectra ......................160
Instantaneous Time-weighted Sound Levels .....159
Instantaneous Weather Data .............................159
Peak Sound Level..............................................159
Sound Pressure Level........................................159
Instantaneous Measured Spectra Parameters .......160
Instantaneous Time-weighted Sound Level
Parameters ........................................................159
Instantaneous Weather Data Parameters...............159
Instrument Components..............................................4
Instrument Parameters ...........................................163
Interface
External Device via USB........................................8
High Speed USB Socket........................................6
LAN Socket ................................................ 6, 8, 10
Micro USB Socket..................................................7
Mini USB Socket ....................................................7
Printer ....................................................................8
USB A Socket ........................................................8
USB Socket............................................................8
Internal Battery Pack...................................................6
G
G4 Mark...................................................................... 6
Gain Control ............................................................. 64
Gain for Annotations............................................... 171
Gain for Meas.Signal Parameter ............................ 171
General Parameters .......................................155, 160
Glossary ................................................................. 179
GPRS/EDGE/HSPA Modem .................................... 65
GPS Note ...........................................................22, 75
GPS Receivers......................................................... 74
Connection .......................................................... 75
GPS Settings............................................................ 75
H
Handling the Analyzer .............................................. 89
Handswitch ZH-0680.............................................. 140
Hardware
Maintenance........................................................ 89
Setup................................................................... 11
Version ................................................................ 28
Hardware Version 4.................................................... 6
Headphone Settings................................................. 64
Parameters........................................................ 170
Help .............................................................28, 34, 80
High Speed USB ........................................................ 6
Hinged Cover FB-0679............................................... 6
Hiss ........................................................................ 184
How to Use this Manual ............................................. 1
HT-0015 Earphones ................................................... 7
INDEX
Internet Connection .................................................. 53
Set up Analyzer ................................................... 56
Update Software .................................................. 80
Using DynDNS..................................................... 67
via LAN or WLAN................................................. 68
View and Control Analyzer .................................. 56
ISO 1996-2, Annex D
Tone Assessment Calculations ......................... 118
ISO/EU Occupational Health Parameters...... 155, 160
J
Jobs .......................................................................... 21
Copy/Paste .......................................................... 51
Deleting ............................................................... 51
Description........................................................... 49
Moving ................................................................. 51
Navigating............................................................ 50
Setting Default ..................................................... 51
K
Key Backlight Parameter ........................................ 167
Keyboard
Character ............................................................. 38
Number ................................................................ 37
Keyboard Parameter............................................... 169
L
LA90.0 ...................................................................... 183
LAE .......................................................................... 182
LAeq .................................................................. 26, 182
LAeq Parameter ....................................................... 145
LAeq,T,mov ................................................................ 182
LAeq,T,mov,max .......................................................... 182
LAF .......................................................................... 182
LAF Parameter ........................................................ 145
LAF(SPL) ................................................................... 183
LAF90.0..................................................................... 183
LAFmax ..................................................................... 182
LAFmin ..................................................................... 183
LAFTeq ..................................................................... 183
LAN
Cable ................................................................... 68
Connection ................................................... 53, 69
Interface................................................... 8, 10, 65
Modem................................................................. 65
LAN Connection........................................................ 68
WLAN .................................................................. 69
Language Parameter .............................................. 169
Languages ................................................................ 63
LAS Parameter ........................................................ 145
Last Calibration Date ................................................ 45
LavUQ ...................................................................... 183
LCpeak ..................................................................... 183
LCpeak,1s .................................................................. 183
LEDs ...................................................................... 7, 9
Lep,d ........................................................................ 183
193
Lep,d,v...................................................................... 184
Leq ............................................................................ 25
Level Detection
Automatic ............................................................ 44
Licenses ................................................................... 29
Listen to Signal Parameter ..................................... 170
Listening to Annotations ........................................... 52
Lock/Unlock
Display................................................................. 38
Pushbuttons ........................................................ 38
Log In as Another User ............................................ 87
Logged (100 ms) Measurement Parameters.......... 159
Logged Broadband (100 ms) Parameters ..... 145, 159
Logged Broadband Parameters ............................. 143
Logged Measurement Parameters ......................... 157
Equivalent Continuous Sound Levels................ 157
Maximum Time-weighted Sound Levels ........... 157
Minimum Time-weighted Sound Levels ............ 157
Per Set of Logged Parameters.......................... 158
Sound Exposure Level ...................................... 157
Special............................................................... 158
Spectrum ........................................................... 158
Statistics to Calculate ........................................ 158
US Occupational Health .................................... 157
Weather Data .................................................... 158
Logged Spectrum Parameters ............................... 145
Logging..................................................................... 97
Logging Module BZ-5503-A ..................................... 55
Logging Period Parameter ..................................... 142
Logging Software
Controlling ......................................................... 100
Display Results.................................................. 100
Markers ............................................................... 99
Marking Sound Categories................................ 103
Play Signal Recording ....................................... 103
Profile Overview ................................................ 102
Profile View ....................................................... 101
Saving ............................................................... 105
Settings ............................................................... 98
Signal Recording Attachment............................ 111
Status Field ....................................................... 101
Synchronize......................................................... 99
with Signal Recording............................... 100, 110
with Tone Assessment ............................. 100, 124
Logging Software BZ-7133................................ 27, 97
Login Parameters ................................................... 178
Long Signal Recordings ......................................... 112
Loudness......................................................... 95, 184
Loudness Level ............................................... 95, 184
Loudness Parameter .............................................. 139
Loudspeaker Icon..................................................... 52
LWeq 1/3-octave Spectrum Parameters ................. 160
LWeq Spectrum Parameters................................... 160
LXeq(f1-f2)................................................................. 95
LZeq .......................................................................... 95
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M
Main Menu..........................................................29, 34
Icon ....................................................................... 5
Mains Power Connected ............................................ 9
Mains Power Supply ZG-0426 ................................... 7
Maintenance............................................................. 89
Making your First Measurement............................... 15
Managing Data ......................................................... 49
Manual Calibration ................................................... 40
Manual Event ...................................................99, 108
Marker ............................................................... 104
Manual Event 2 Pushbutton ....................................... 5
Manual Event Pushbutton .......................................... 5
Manual Recording .................................................. 108
Markers .................................................................... 99
Browse through ................................................. 103
Create with Pushbuttons ................................... 104
Create with Stylus ............................................. 104
Editing ............................................................... 104
Exclude ............................................................. 104
Manual Event .................................................... 104
Marker 6 ............................................................ 111
Sound Categories ............................................. 103
Markers Parameters............................................... 146
MATRON................................................................ 140
Maximum Duration Parameter ............................... 149
Maximum Time-weighted Sound Levels ................ 154
Parameters........................................................ 157
Measurement
Automatic ............................................................ 76
Basic Procedure .................................................. 15
Control with Pushbuttons .................................... 19
Controlling ........................................................... 92
Document ............................................................ 22
Making your First................................................. 15
Organisation ........................................................ 49
Recalling ............................................................. 51
Reset ..................................................................... 5
Saving ...........................................................21, 51
Status .................................................................. 19
Units .................................................................... 63
Viewing................................................................ 22
Measurement Control Parameters ......................... 142
Measurement Mode ................................................. 20
Measurement Mode Parameter.............................. 142
Measurement Parameters...................................... 153
Relationship with Setup Parameters ................. 160
Measurement Partner Suite BZ-5503.................29, 54
Connect to Analyzer ............................................ 65
Logging Module................................................... 55
Spectrum Module ................................................ 55
Measuring for Convenience ..................................... 14
Measuring from a Distance ...................................... 13
Memory Cards
CF ..........................................................................9
SD ..........................................................................9
SDHC.....................................................................9
Memory Devices
Formatting and Speed .........................................82
Storing and Recalling Data Errors .......................83
Micro USB Cable AO-1494 .........................................7
Microphone .................................................................5
Connecting...........................................................13
Disconnecting ......................................................13
Extension .............................................................13
Extension Cable.............................................. 8, 14
Input .......................................................................8
Mounting ..............................................................12
Placement of ........................................................12
Specifications.......................................................43
Uncalibrated.........................................................34
Microphone Holder UA-1317 ....................................14
Microphone Parameters..........................................166
Microphone Setup Parameters ...............................163
Microphone Type 4950 ................................. 8, 13, 43
Microphone Type Parameter ..................................164
Mini USB Cable AO-1476 ...........................................7
Minijack to Earphones............................................ 7, 8
Minimum Duration Parameter .................................149
Minimum Time-weighted Sound Level Parameters ......
155, ..................................................................157
MM-0256 Weather Station ........................................74
MM-0316 Weather Station ........................................74
Mobile Phone Connection.........................................53
Modem Settings ........................................................65
Parameters ........................................................173
Modems
CF ........................................................................67
GPRS/EDGE/HSPA.............................................65
LAN ......................................................................65
RS–232 Interface .................................................66
USB Interface.......................................................66
Mounting
Microphone ..........................................................12
onto Microphone Holder.......................................14
onto Tripod...........................................................13
Tripod.....................................................................6
Windscreen ..........................................................13
Moving Equivalent Continuous Sound Level ..........182
Moving Jobs and Projects.........................................51
N
Navigating in Jobs.....................................................50
Navigation .................................................................29
Explorer................................................................50
Pushbuttons .................................................... 5, 36
NC.................................................................... 95, 184
NC Decisive Band...................................................184
INDEX
NCB ................................................................. 95, 184
Classification...................................................... 184
Network
Connection .......................................................... 53
Settings................................................................ 68
Settings Parameters ................................... 69, 174
NMT Server Settings .............................................. 178
Noise Curve .............................................................. 95
Noise Parameters ..................................................... 95
Nominal Sensitivity ................................................... 44
Notification Settings Parameters ............................ 176
NR.................................................................... 95, 184
NR Decisive Band................................................... 184
Number of Decimal Places ..................................... 167
Numbers
Increment or Decrement ...................................... 38
Keyboard ............................................................. 37
O
Occupational Health
Parameters ........................................................ 149
Standards .......................................................... 185
Online Display........................................................... 56
Ordering Information............................................... 136
Organising Measurements........................................ 49
Output Socket ...................................................... 7, 10
Overload Icon ........................................................... 34
Overview
Connection to BZ-5503 Options .......................... 54
Hardware ............................................................. 11
Logging Options .................................................. 97
Profile ................................................................ 102
P
Parameters
Calibration Setup ............................................... 166
Current Transducer............................................ 163
Display Settings ................................................. 167
Frequency Weighting......................................... 140
Headphone Settings .......................................... 170
Input................................................................... 139
Instantaneous .................................................... 159
Instrument.......................................................... 163
Logged (100ms) Measurements........................ 159
Logged Measurements ...................................... 157
Measurement..................................................... 153
Measurement Control ........................................ 142
Microphone ........................................................ 166
Modem/DynDNS Settings.................................. 173
Network Settings................................................ 174
Noise ................................................................... 95
Notification Settings ........................................... 176
Power Settings................................................... 168
Preferences ....................................................... 167
Printer Settings .................................................. 172
195
Processed for Display ....................................... 160
Regional Settings .............................................. 169
Relationship between Setup and Measurement 160
Selecting.............................................................. 36
Setup ................................................................. 139
Storage Settings................................................ 170
Total Measurement ........................................... 154
Transducer ........................................................ 163
within Elapsed Time .......................................... 154
Password.................................................................. 38
Passwords................................................................ 56
Parameters........................................................ 178
Paused Icon ............................................................. 34
PC Connection ......................................................... 53
PC Icon..................................................................... 33
PCL Printer Setttings................................................ 64
Peak Recording Level Parameter .......................... 148
Peak Sound Level Parameters...................... 154, 159
PeaksOver Level Parameter .................................. 150
Percentile Level Parameters .................................. 153
Percentile Parameters ............................................ 141
Placement of the Microphone................................... 12
Play Back of Recording .......................................... 109
Post-processing................................................. 29, 55
Post-processing Parameters .................................. 151
Post-recording Time Parameter ............................. 149
Power
Mains Connected .................................................. 9
Off........................................................................ 23
Saving .......................................................... 60, 64
Settings ............................................................... 60
Settings Parameters.......................................... 168
Socket ................................................................... 7
Status .................................................................... 9
Power Supply Icon ................................................... 34
Power-on Pushbutton................................................. 5
Preamplifier ................................................................ 5
Connecting .......................................................... 13
Disconnecting...................................................... 13
Preamplifier ZC-0032 ............................................... 13
Preferences .............................................................. 31
Parameters........................................................ 167
Setting ................................................................. 59
Web ..................................................................... 56
Pre-marker Time Parameter................................... 146
Pre-recording Time................................................. 112
Pre-recording Time Parameter............................... 148
Preset Logging Time Parameter ............................ 142
Preset Time Parameter .......................................... 142
Printer
Interface ................................................................ 8
Settings ............................................................... 64
Settings Parameters.......................................... 172
Printing ..................................................................... 64
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Processed Parameters for Display......................... 160
General ............................................................. 160
ISO/EU Occupational Health............................. 160
LWeq 1/3-octave Spectrum ............................... 160
LWeq Spectrum ................................................. 160
Statistics ............................................................ 160
Profile Overview ..................................................... 102
Profile View ............................................................ 101
ProjDose................................................................. 180
ProjDoseUQ ........................................................... 181
Project Name Prefix ................................................. 63
Project Name Prefix Parameter.............................. 170
Project Template Bar................................................ 33
Projects .................................................................... 21
Asterisks.............................................................. 21
Changing the Template ....................................... 18
Copy/Paste.......................................................... 51
Deleting ............................................................... 51
Description .......................................................... 49
Moving................................................................. 51
Name................................................................... 49
Name Prefix ........................................................ 63
Re-use Setup ...................................................... 52
Templates ........................................................... 16
Protector Type 7825................................................. 55
PSIL..................................................................95, 186
PULSE Multi-analyzer .............................................. 55
Analyze Signal Recordings ............................... 115
Pushbuttons
Accept .............................................................5, 36
Back-erase ......................................................5, 35
Controlling the Measurement .............................. 19
Create Markers ................................................. 104
Locking ................................................................ 38
Manual Event ........................................................ 5
Manual Event 2 ..................................................... 5
Navigation .......................................................5, 36
Power-on ............................................................... 5
Reset Measurement ........................................5, 35
Save .........................................................5, 21, 35
Start/Pause ..............................................5, 18, 35
Store...................................................................... 5
Use of.................................................................. 35
Q
QB-0061 Battery Pack.............................................. 12
Quality Indicators
in Tone Assessment Software .......................... 124
Quick Start Guide ..................................................... 15
R
RC ............................................................................ 95
RC Classification .................................................... 186
RC Parameter
Definition ........................................................... 186
Recalibration of Charge Indicator .............................84
Recalling Measurements ..........................................51
Reconfigure
Templates ............................................................87
Users....................................................................87
Recorded Signal Parameter....................................147
Recording Control ...................................................108
with Logging.......................................................110
with Stylus..........................................................112
Recording Control Parameter .................................147
Recording Icon........................................................109
Recording Quality ...................................................108
Recording Quality Parameter..................................147
Recording Signals............................................ 52, 107
Reference Time ......................................................185
Reference Time Parameter.....................................149
Regional Settings......................................................62
Parameters ........................................................169
Re-installing Software ...............................................87
Remote Access Settings...........................................56
Remote Data Viewing ...............................................29
Rental........................................................................89
Repair .......................................................................88
Reporting ..................................................................55
Resetting Analyzer....................................................85
Reset Button ..................................................... 7, 9
Resetting Measurement............................................35
Pushbutton.............................................................5
Restore Factory Settings ..........................................87
Results
Display in Frequency Analysis Software..............92
Display in Logging Software ..............................100
Display in Tone Assessment Software ..............122
Save in Frequency Analysis Software .................96
Save in Logging Software ..................................105
View .....................................................................51
Return
to Main Screen.....................................................28
to Previous Screens.............................................28
Re-using Setups .......................................................52
RS–232 Modem ........................................................66
Rumble........................................................... 184, 186
Running Icon.............................................................34
RV ...........................................................................184
S
Save Power........................................................ 60, 64
Save Pushbutton................................................ 21, 35
Saving
a Template ...........................................................34
Logging Results .................................................105
Pushbutton.............................................................5
the Measurement .......................................... 21, 51
the Recording.....................................................107
INDEX
Screen ................................................................. 5, 32
Touch Adjustments .............................................. 60
Troubleshooting ................................................... 84
Scrolling .................................................................... 28
SD Card
Slot ................................................................... 7, 9
Troubleshooting ................................................... 82
SDHC Card
Slot ................................................................... 7, 9
Secure Digital
High Capacity (SDHC)........................................... 9
Slot for .............................................................. 7, 9
Selecting
Parameter Values ................................................ 36
Template.............................................................. 18
Weighting Parameters ......................................... 20
Server Settings
NMT ................................................................... 178
Web ................................................................... 178
Services .................................................................... 88
Set Up
Default Tone Assessment.................................. 121
Frequency Analysis ............................................. 91
Logging ................................................................ 98
Manual Tone Assessment ................................. 120
Measurement Mode............................................. 20
Projects................................................................ 52
Signal Recording ............................................... 108
Signal Recording with Logging .......................... 110
Sound Level Meter Software ............................... 17
Tone Assessment .............................................. 119
Settings
Backlight .............................................................. 60
Brightness..................................................... 60, 61
Display ................................................................. 59
DynDNS........................................................ 65, 67
GPS ..................................................................... 75
Headphone .......................................................... 64
Language............................................................. 63
Modem................................................................. 65
Network................................................................ 68
Network Parameters ............................................ 69
PCL Printer .......................................................... 64
Power .................................................................. 60
Preferences ......................................................... 59
Printer .................................................................. 64
Regional .............................................................. 62
Storage ................................................................ 63
Timer.................................................................... 76
Touch Screen ...................................................... 60
Units .................................................................... 63
Weather ............................................................... 74
Setup Menu .............................................................. 31
Setup Parameters................................................... 139
Relationship with Measurement Parameters ..... 160
197
Setups
Parameters........................................................ 139
Re-using .............................................................. 52
Setup Menu ......................................................... 31
Shortcut Bar ...................................................... 33, 34
Signal Recording ............................................. 52, 107
as Annotations................................................... 107
Attachment ........................................................ 111
Automatic .......................................................... 110
Control............................................................... 109
External Triggers ............................................... 108
Import .................................................................. 55
Input .................................................................... 10
Long .................................................................. 112
Manual Triggers ................................................ 108
Parameters........................................................ 147
Play Back .......................................................... 103
Play Back on PC ............................................... 115
Playing............................................................... 109
Saving ............................................................... 107
Setting Up.......................................................... 108
Setting Up with Logging .................................... 110
Triggering with Any Event ................................. 111
with Logging ............................................. 100, 110
with PULSE Multi-analyzer................................ 115
with Tone Assessment ...................................... 122
Signal Recording Option BZ-7226................... 28, 107
SIL ................................................................... 95, 186
SIL3 ................................................................. 95, 186
SLM (Sound Level Meter) ........................................ 25
Slots
Compact Flash Card ........................................ 7, 9
Secure Digital Card .......................................... 7, 9
Slow Time Weighting................................................ 25
Small Tripod UA-0801 .............................................. 13
Smart Phone Connection ......................................... 53
Smileys
Codes and Remedies in Tone Assessment ...... 125
in Frequency Analysis ......................................... 96
in Tone Assessment.......................................... 124
SMS Settings Parameters ...................................... 177
Sockets
Earphone.......................................................... 7, 8
External Power ...................................................... 7
High Speed USB ................................................... 6
Input ................................................................. 7, 8
LAN ............................................................6, 8, 10
Micro USB ............................................................. 7
Mini USB ............................................................... 7
Output.................................................................... 7
Top ................................................................... 5, 8
Trigger Input ................................................... 7, 10
USB ....................................................................... 8
USB A.................................................................... 8
198
Hand-held Analyzer 2250 Light – User Manual
Software
Downgrade .......................................................... 82
Install New........................................................... 79
Reinstalling.......................................................... 87
Update................................................................. 29
Update or Upgrade.............................................. 79
Version ................................................................ 28
Sound (definition) ................................................... 186
Sound Calibrator Type 4231 .................................... 40
Sound Categories in Logging ................................. 103
Sound Exposure (E) ............................................... 181
Sound Exposure Level Parameters................154, 157
Sound Field Correction Parameter......................... 139
Sound Field Corrections........................................... 44
Sound Level ........................................................... 186
Sound Level Meter
Description .......................................................... 25
Project Template ................................................. 15
Sound Level Meter Software
Instantaneous Measured Parameters ................. 27
Set Up ................................................................. 17
Start-up ............................................................... 17
Timed Measured Parameters.............................. 26
with Signal Recordings...................................... 107
Sound Level Meter Software BZ-7130 ..................... 26
Sound Marker......................................................... 111
Sound Pressure Level ............................................ 186
Parameters........................................................ 159
Soundrec ................................................................ 107
Special Parameters ........................................155, 158
Specifications ......................................................... 127
1/1-octave Frequency Analysis Software
BZ-7131 ....................................................... 132
1/3-octave Frequency Analysis Software
BZ-7132 ....................................................... 132
2250 Light ......................................................... 128
Compliance ....................................................... 137
Logging Software BZ-7133 ............................... 133
Measurement Partner Suite BZ-5503 ............... 135
Signal Recording Option BZ-7226 .................... 133
Sound Level Meter Software BZ-7130 .............. 130
Tone Assessment Option BZ-7231 ................... 134
Spectrum Module BZ-5503-B................................... 55
Spectrum Parameter .............................................. 141
Spectrum Parameters ...........................145, 156, 158
Spectrum View ......................................................... 93
Standard Calibration................................................. 40
Standards
IEC 61672-1 ........................................................ 12
Standby Mode ....................................................60, 61
Standby Parameter ................................................ 168
Star
Next to Project Name .......................................... 21
Next to Template ................................................. 16
Star Navigation Concept .......................................... 29
Start/Pause Pushbutton ................................ 5, 18, 35
Start-up
Initial Sound Level Meter Screen .........................17
Time .....................................................................17
Statistics Parameters ..................................... 141, 160
Statistics to Calculate..................................... 156, 158
Status
Elapsed Time .......................................................34
Logging ..............................................................101
Microphone ..........................................................34
Overload ..............................................................34
Paused.................................................................34
Power.....................................................................9
Running................................................................34
Stopped................................................................34
Uncal....................................................................34
Status Codes
in Tone Assessment Software ...........................124
Status Field ........................................................ 19, 33
Status Indicator ...........................................................5
Std.Dev. ..................................................................186
Stopped Icon.............................................................34
Storage
of Analyzer ...........................................................89
Problems..............................................................83
Settings ................................................................63
Settings Parameters ..........................................170
Storage Settings Parameter....................................170
Store Pushbutton ........................................................5
Stylus ..........................................................................5
Use of...................................................................36
Switching Off.............................................................23
Backlight ..............................................................60
Switching On.............................................................17
Synchronization in Logging.......................................99
Synchronize with Clock Parameter .........................142
T
T for LAeq,T,mov parameter ......................................143
TCpeak .....................................................................186
Temperature .............................................................63
Temperature Unit Parameter ..................................169
Templates
1/1-octave Frequency Analysis............................16
1/3-octave Frequency Analysis............................16
Asterisks ..............................................................16
Changing the Project ...........................................18
Delete or Reconfigure ..........................................87
Logging ................................................................16
Project Template..................................................16
Project Template Bar ...........................................33
Save.....................................................................34
Sound Level Meter...............................................16
Threshold Level ......................................................187
Threshold Level Parameter.....................................150
INDEX
Time Weighting....................................................... 181
Parameters ........................................................ 153
Time Weighting for Lav Parameter ......................... 150
Time Weightings ....................................................... 25
Time Zone Parameter............................................. 169
Time, Clock Display .................................................. 34
Timed Measured Parameters ................................... 26
Timer Setup .............................................................. 32
Timers....................................................................... 76
Add and Delete .................................................... 77
Setup ................................................................... 76
Tips and Tricks ......................................................... 59
Tone Assessment
According to ISO 1996-2, Annex D.................... 118
Calculations ....................................................... 118
Default Setup ..................................................... 121
Display Results .................................................. 122
Frequency Ranges ............................................ 118
Level Differences ............................................... 118
Manual Measurement ........................................ 120
Setting Up .......................................................... 119
Smileys and Remedies ...................................... 125
with Logging ............................................. 100, 124
with Saved Measurements ................................ 125
with Signal Recording ........................................ 122
Tone Assessment Option BZ-7231.................. 28, 117
Top Freq. for Special Leq Parameter ..................... 141
Top Socket............................................................. 5, 8
Total Measurement Parameters ............................. 154
CIC Results........................................................ 156
Equivalent Continuous Sound Level.................. 154
General .............................................................. 155
ISO/EU Occupational Health ............................. 155
Maximum Time-weighted Sound Levels............ 154
Minimum Time-weighted Sound Level............... 155
Peak Sound Level ............................................. 154
Sound Exposure Level....................................... 154
Special ............................................................... 155
Spectrum ........................................................... 156
Statistics to Calculate ........................................ 156
US Occupational Health .................................... 155
Weather Data..................................................... 156
Touch-sensitive Screen ............................................ 32
Adjustment........................................................... 60
Troubleshooting ................................................... 84
Traceable Calibration................................................ 44
Traffic Light ............................................................... 36
Brightness............................................................ 60
Traffic Light Brightness Parameter ......................... 167
Training..................................................................... 89
Transducer Database ............................................... 43
Transducer Used Parameter .................................. 163
Transducers.............................................................. 43
Parameters ........................................................ 163
199
Screen ................................................................. 32
Transfer Data to PC ................................................. 53
Trigger Input ........................................................... 109
Socket ............................................................ 7, 10
Trigger Input Parameter ......................................... 140
Tripod
Adaptor.................................................................. 6
Extension Stem ................................................... 13
Microphone Holder .............................................. 14
Mounting.............................................................. 13
Mounting Thread ................................................... 6
Tripod Extension Stem UA-1651.............................. 13
Tripod UA-0587 ........................................................ 13
Troubleshooting........................................................ 82
Battery ................................................................. 84
Charge Indicator.................................................. 84
External Memory Devices ................................... 82
Help ..................................................................... 80
Selecting an Interval for Storing ........................ 113
Templates............................................................ 87
Touch Screen ...................................................... 84
when Setting a Marker ...................................... 113
Turn off Backlight ..................................................... 60
Turn off Backlight Parameter.................................. 168
TWA ....................................................................... 187
TWAv ...................................................................... 187
U
UA-0587 Tripod ........................................................ 13
UA-0801 Small Tripod .............................................. 13
UA-1317 Microphone Holder.................................... 14
UA-1651 Tripod Extension Stem.............................. 13
UA-1673 Adaptor for Tripod ....................................... 6
UL-0250 USB to RS–232 Converter ........................ 66
UL-1016 Ethernet CF Card ............................... 65, 69
UL-1019 CF WLAN Card.......................................... 69
Uncal ........................................................................ 34
Unit System .............................................................. 63
Unlock ...................................................................... 38
Update Software....................................................... 29
Update/Upgrade Applications................................... 79
US Occupational Health Parameters ............ 155, 157
USB
High Speed............................................................ 6
Interface ........................................................... 7, 8
Modem ................................................................ 66
Troubleshooting................................................... 82
Type A ................................................................. 66
USB Adaptor AO-0657 ............................................. 75
USB to RS–232 Converter UL-0250 ........................ 66
User Name Parameter ........................................... 178
Usernames ............................................................... 56
Users, Delete or Reconfigure ................................... 87
Hand-held Analyzer 2250 Light – User Manual
200
V
Versions
Hardware and Software ...................................... 28
View and Control Instrument .................................... 58
View Instrument........................................................ 57
Viewing
Annotations ......................................................... 52
Data..................................................................... 52
Data Remotely .................................................... 29
Results ................................................................ 51
Saved Measurements ......................................... 22
Views........................................................................ 33
Central Area ........................................................ 34
Profile ................................................................ 101
Spectrum ............................................................. 93
XL ........................................................................ 19
W
Warm Start ............................................................... 17
Weather.................................................................... 74
Weather Data Parameters..............................156, 158
Weather Stations...................................................... 74
Weather Station MM-0256 .................................. 74
Weather Station MM-0316 .................................. 74
Web Page...........................................................57, 58
Web Server Settings .................................................56
Parameters ........................................................178
Weighting
Select ...................................................................20
What is 2250 Light? ..................................................26
What is a Sound Level Meter?..................................25
Wind
Parameters ..........................................................74
Speed...................................................................63
Wind Speed Unit Parameter ...................................169
Windscreen ...............................................................13
Corrections...........................................................44
Icons ....................................................................34
Windscreen Correction Parameter..........................140
Wireless LAN ............................................................69
Parameters ..........................................................70
WLAN Connection ............................................. 68, 69
Wrist Strap ..................................................................6
X
XL View.....................................................................19
Z
ZC-0032 Preamplifier................................................13
ZG-0426 Mains Power Supply ....................................7
ZH-0680 Handswitch ..............................................140
Z-weighting ...................................................... 25, 187
Technical
Documentation
Hand-held Analyzer 2250 Light
With Sound Level Meter Software BZ-7130
1/1-oct. Frequency Analysis Software BZ-7131
1/3-oct. Frequency Analysis Software BZ-7132
Logging Software BZ-7133
Signal Recording Option BZ-7226 and
Tone Assessment Option BZ-7231
HEADQUARTERS: Brüel & Kjær Sound & Vibration Measurement A/S · DK-2850 Nærum · Denmark
Telephone: +45 7741 2000 · Fax: +45 4580 1405 · www.bksv.com · info@bksv.com
Local representatives and service organisations worldwide
ËBE-1766---HÎ
User Manual
English BE 1766 –23