NOISE HiLOGGER 3145-20, NOISE SEARCH
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2
Have you ever had a problem with electronic device faults and
telecommunications interference?
Device malfunctions
From Other Telecom
Lines
Radiated Electrical Noise
Device damage
Affected
Device
From Telecom Lines
Network connection problems
Slow data communications, etc.
Power Lines
<--> Telecom Lines
From Earth Lines
From Power Lines
How do you know if the noise ingress is from the device’s power, telecom or earth line?
HIOKI’s series of noise measurement instruments are designed to help your investigation.
Optimal frequency range for measuring conducted noise
Broad Measurement
Frequency Range
Broadcast
transmitters
Noise from factories,
radiated noise
Lightning
surges
Operating noise
from elevators, etc.
10 kHz to 100 MHz (Model 3145 -20 )
500 Hz to 30 MHz (Model 3144 -20 )
Check for broad ranges of noise at one time: Model 3145-20 measures noise
between 10 kHz and 100 MHz, and Model 3144-20 measures noise between
500 Hz and 30 MHz.
Noise Sources
Shortwave
FM Transmitters
Lightning
Transmitters
Fluorescent Lights & Neon Signs Elevators
ESD
Amateur
Radio TV
Walkie Talkies
Drive Motors
AM Radio
Electric Railroad Induction
Power Line Induction
Switching
Inverter
Arc Welders Illegal CB Radios
Cell phones
Radio
transmitters
Power noise from
air conditioner
inverters
Frequency [Hz}
Model 3144 -20
Measurement Range
Model 3145 -20
Measurement Range
Cellular telephone
transmitters
ESD from human
bodies
ESD from office
equipment such as
chairs
ESD from motion of
open-access flooring
Clamp-Type Noise Sensor (Non-Contact)
Detect noise without contact, and earth-free
(Model 9754). Because measurement requires no
electrical contact, there's no need to worry about
interfering with communications, electric shock
or short circuits, and use is simple and safe even
in active-line conditions.
Simple and Safe !
3144-20
Electronic Device
Telecom Line
Power Line
3145-20
9754
9741
Earth Line
The Clamp-On Noise Sensor 9754 detects noise current, and the Clamp-On Voltage
Sensor 9741 detects noise voltage. Measure noise just by clamping around telecom,
power and earth lines.
(The Clamp-On Voltage Sensor 9741 requires grounding)
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3
Easily measure earth line noise
The impedance of an earth line is proportional to its length and frequency. When noise current flows in an earth line, the resulting noise
voltage may swing the potential of an electronic device to cause noise
interference.
AC Power Line
Device
Using the NOISE HiLOGGER 3145-20 with the Clamp-On Noise
Sensor 9754, the noise current level and frequency of the earth
line can be measured simply, without direct contact.
9754
3145-20
Earth
Reliably capture one-shot noise
One-shot noise such as from lightning surges, contact opening/closing surges and electrostatic discharges is captured using the
peak-detection function (Model 3145 -20).
One-shot noise cannot be reliably detected while sweeping the mea-
With a spectrum analyzer surement range at a particular sweep frequency.
One-shot noise that occurs during the dead time cannot be detected
with an FFT analysis function of a digital oscilloscope.
With FFT functions
The 3145 -20 is designed to measure noise that changes
With the NOISE HiLOGGER
frequency or level over time, as well as one-shot noises
3145 -20
such as surges.
High-end functionality in Model 3145-20,
or the compact light weight Model 3144-20
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Measuring Noise Current
and Noise Voltage
I
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Electronic
Device B
I
I
Earth Line
From i1 = i2 + i3
Noise current ingress on a power line can flow through
electronic device A to appear on the earth and telecom lines.
Noise current and voltage measurements have
the following features.
Noise voltage measurement
Electronic devices normally operate at a specific voltage level.
Noise voltage measurement can determine whether noise is
the cause of damage from exceeding a safe threshold or of
malfunction due to inadequate noise margin.
The 9741 Sensor (supplied with Model 3144-20 ) measures noise
voltage.
Noise voltage measurement with the 9741 requires grounding to
establish a reference potential.
Some other specifications differ for the two
models, so please select a model according
to your application.
Comparison of Sensor Models 9754 and 9741
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Potential
Earth Line
Noise voltage exceeds the specified
margin above the signal voltage.
Noise voltage is proportional to the impedance at the
location of ingress.
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Noise current: Measure using the Model 9754 Clamp-On Noise Sensor (option for Model 3145-20 ).
Noise voltage: Measure using the Model 9741 Clamp-On Noise Sensor (supplied with Model 3144-20 ).
Noise current measurement
The 9754 sensor (option for Model 3145 -20 ) measures noise
current.
Noise current measurement is ideal for determining the noise
propagation route from the point of ingress, and for measuring
earth line noise.
Measurement with the 9754 is earth-free (no grounding required).
Electronic
Device A
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4
High-end functionality noise measurement instrument
provides long-term recording and remote control functions
NOISE HiLOGGER 3145-20
Color LCD Noise Level Display
View instantaneous values of measured noise, and noise level variations over time.
LAN Connector
(10BASE-T)
PC Card
BNC Jack
For the CLAMP ON NOISE SENSOR 9754 or
other voltage input (from antenna or short-range
magnetic probe).
CLAMP ON NOISE SENSOR 9754 (Option)
Measure noise current without direct connection
Monitoring Measurement
Current Ranges (using Model 9754 Sensor)
200 mA range
2.0 mAp-p to 280.0 mAp-p
2 A range
0.020 Ap-p to 2.800 Ap-p
20 A range
0.20 Ap-p to 28.00 Ap-p
Voltage Ranges
10 mV range
0.20 mVp-p to 14.00 mVp-p
100 mV range
2.0 mVp-p to 140.0 mVp-p
1 V range
0.020 Vp-p to 1.400 Vp-p
View instantaneous noise levels in a bar graph
The 3145-20 separates noise between 10 kHz and ■ Seven Band-Pass Filters Separate Noise
Center Freq. f0
100 MHz into seven frequency bands, and displays the noise current level of each band as one
bar in a bar graph, which is refreshed every 100
ms.
Just clamp around a signal line and start measurFrequency
ing immediately.
Bandwidth
Monitoring on
an oscilloscope
Noise levels are displayed in a bar graph on the 3145 -20
Peak Bar
Peak Noise Level
Numerical Display
View Instantaneous or
Maximum Values
Level Bar
Noise waveform details can be
measured, but the kind of noise
cannot be determined.
Present Noise Level
Bands
Displays Seven Frequency
Ranges
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Easily view the noise current level
in each band.
The displayed bar graph exposes
the characteristics of the noise.
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NOISE HiLOGGER 3145 -20
Logging Measurement
Record noise level variations over time
Variations in the noise levels of the seven frequency bands over time are recorded in the instrument’s internal memory. By analyzing
logged data, long-term and periodic noise levels can be captured and the timing of the noise occurrence can be determined.
The recording interval can be set from 1 to 60 seconds. The peak level of noise measured within each recording interval is recorded.
Automatically save data to a memory card while measuring
Measurement data can be automatically saved to a PC Card. For continuous long-term
recording, cards up to 1 GB are supported. Data saved to a PC Card can be analyzed
on a personal computer using the supplied DATA VIEWER program for Model 3145-20.
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YEARS
YEARS
Note: Recording times are calculated values, and cannot be guaranteed.
Charge the battery pack while operating (with Battery Pack Model 9447)
The battery charges while measuring. If an unexpected power outage occurs during long-term
recording, measurement continues on battery power, greatly improving the reliability of longterm measurements.
The noise level of each frequency
band saved in the instrument’s internal
memory is displayed as a time series.
Past noise levels can be viewed
using the Waveform Scroll function.
Alarm Function
•If no battery pack is available for power backup, measuring is interrupted and data in
the instrument’s memory is lost after about ten minutes.
•If Auto Save is enabled when using a PC Card, data measured up to one minute before a power outage is saved on the PC Card.
•Recovery to the pre-outage state is available with the Start Backup function.
An alarm sounds when the noise level exceeds a specified threshold
Using the Alarm Function
Noise Interference
What happens when power is lost while measuring?
Noise occurrences can be quickly discovered by setting the alarm
threshold at the ambient noise level during normal conditions.
While logging measurements, the date and time of alarm events
are recorded, so you can see precisely when rare noise interference events occur.
The e-mail notification function sends an e-mail to an office PC or
cell phone when the noise at a remote location triggers an alarm
event.
Note: a LAN environment is necessary for e-mail.
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NOISE HiLOGGER 3145 -20
Communication Function
Remote Operation (Remote Measurement via HTTP Server)
The instrument’s settings, data acquisition and screen moni-
[ Connection Example Using HTTP Communication via 10BASE-T LAN ]
toring can be controlled via an Internet browser such as Internet Explorer.
l REMOTE CONTROL
l CURRENT DATA DISP
l DATA GET BY FTP
l MEMORY DATA GET
l START/STOP
l COMMENT SET
PC (www) Browser
3145-20
Remote Operating Screen
Starting and Stopping Measurement
•The browser displays a working emulation of instrument’s control
panel.
•Startandstopmeasurementfromyourwebbrowser.
•Real-timemeasurementconditionsaredisplayed.
•Keysontheemulatedpanelworkjustlikethoseonthe
instrument.
Communication Function
E-Mail Sending
An e-mail can be sent to a PC in a local network or located remotely when measurement stops, an alarm occurs, upon
recovery from power outage, or when internal memory or a PC Card becomes full.
[ Connection Example Using Mail send via 10BASE-T LAN ]
SMTP Mail Server
Internet
Service Provider
E-Mail Recipient
Cell phone or PC
3145-20
PC (www) Browser
[E-Mail Example]
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7
NOISE HiLOGGER 3145 -20
PC Application Program: DATA VIEWER for the 3145-20
This program allows data logged by the NOISE HiLOGGER to be viewed on a PC.
Additional functions include searching measurement data
according to specified criteria, time-series graph printing
and converting measurement data to CSV format.
Converting to CSV Format
Data can be converted to text
in CSV format for importing by
spreadsheet programs
Operating environment
■ Compatible OS: Windows 2000, XP, Vista, 7 (64-bit support limited to
Windows 7) For system environment settings such as CPU, memory and
display, use an environment which conforms to that recommended by your OS.
■ HDD space: 10 MB or more of free disk space
Graph Display
Graphically displays recorded
measurement data as a time series
Numerical Value Display
Displays the numerical values of
recorded measurement data
Measurement Data Searching
Search criteria: current level, alarm level
and peak level events can be specified and
searched
Day Display Example
Cursor Function
Displays the time and
measurement values at A/B
cursor positions
Display data by day,
week or month.
By viewing data in a Day Display, noise
variations throughout the day can be seen at
a glance.
Printing and Report Generation
Print measurement
data as a time-series
graph.
Capture an image
of the displayed
graph and copy it
into Word or other
programs.
Measurement Report
Measurement A ..........
Measurement B ..........
Measurement Date: 00/00/00
Paste an image of the displayed
graph into other programs when
generating reports
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Print from the Application Program
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Noise Measurement Example Using the Monitor Function
To investigate computer malfunctions, measure the noise current
on a LAN cable using the NOISE HiLOGGER 3145 -20.
Clamp the CLAMP ON NOISE SENSOR 9754 around the
LAN cable and monitor the NOISE HiLOGGER display.
Large noise ingress can be seen
around 60 and 20 MHz.
Install noise suppression and recheck the noise
current level on the 3145-20’s monitor.
Results
The effectiveness of the noise
suppression is obvious.
Noise Measurement Example using the Logging Function
Electronic device malfunctions sometimes
occur intermittently.
Although noise is a likely cause, it may be
difficult to confirm with the monitor function if
it is intermittent.
We could capture the noise waveform using
the trigger function of an oscilloscope, but
that doesn’t give much information about the
frequency and level of the noise, so the trigger
settings may not be useful.
Select the measurement range and recording interval, and start logging.
The noise level is constant and no device
malfunctions occur.
Measurement Range Selection
Begin with the following settings:
Telecom Line: 200 mA range
Power and Earth Lines: 2 A range
Lightning Surges: 20 A range
An electronic device malfunction occurred.
Use the logging function.
One-shot noise that occurs intermittently can
be captured by the Peak Detection function.
Once the frequency and level of the noise
that causes the malfunction are known,
appropriate noise suppression steps can be
taken characteristics.
The time needed to resolve noise
interference problems can be shortened.
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The characteristics of the noise and time of
malfunction are indicated on the 3145 -20’s
Logging screen.
At the time of the device malfunction, a
fluctuation in the 60 MHz noise level is evident.
Nominal level: 0.060 A
Level at the time of malfunction: 0.600 A
The noise level becomes ten times greater.
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NOISE SEARCH TESTER Model 3144-20
9
Compact, light weight noise measurement tool handles
like a hand-held tester
Non-contact voltage sensor
Find noise in active circuits without disrupting signals or damaging cables.
Features
Measures from 500 Hz to 30 MHz
Covers a broad frequency range, from power line noise to CB
transmitters.
Level meter display on a large LCD
Noise is detected and displayed separately for each
frequency band.
Peak-Hold function
Displays the peak voltage and its measurement time in each
frequency band.
Logging function for long-term monitoring
Records up to 64,000 measurement points (levels and times).
USB interface included
With the supplied PC application program, transfer data to a
PC, display time-series data and output to a printer.
Powered by battery or AC adapter
Supports both portable on-site measurements and long-term
monitoring.
l On-Site Measurement
Monitor Function
Measured Line
3144-20
AC Adapter
9741
Ground for the 3144-20 or 9741
The Noise Search Tester measures noise from 500 Hz to
30 MHz in seven bands, and displays the noise voltage
in each band as one of seven bars on the level meter.
Measurement is performed just by clamping the CLAMP
ON VOLTAGE SENSOR 9741 around the line of interest.
Noise levels can thus be monitored easily in the active-line
state, without removing insulation.
l Analyzing Recorded Data on a PC
l Record to Internal Memory
Logging Function
Measured levels and times are stored into
internal memory at the specified recording
inte r val. Two re cording mode s can be
selected from the following:
Auto-Stop Mode
Recording stops when internal memor y
becomes full.
Use this mode to retain all data recorded
during the measurement period.
Overwrite Mode
R e c o rd i n g c o n ti n u e s, ove r w r i ti n g th e
oldest data. By measuring in this mode
continuously, the important data is captured
whenever an anomaly occurs.
The Peak-Hold function displays the peak
values and times of occurrence in each
frequency band.
Bundled Application Program
The supplied PC program quickly transfers
recorded data from the Tester to a PC.
Measured noise levels and times can be
viewed on a graph, saved as BMP files and
printed, for use in generating reports.
Print
Download
USB Interface
Operating environment
■ Compatible OS: Windows 2000, XP, Vista, 7 (64-bit support limited to Windows 7) For system environment
settings such as CPU, memory and display, use an environment which conforms to that recommended by your OS.
■ HDD space: 10 MB or more of free disk space
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10
Specifications
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Appearance & Dimension Diagrams
Model 3144 -20 Main Device Only
LAN Connector (10BASE-T)
PC Card Slot (Type II)
RS-232C Terminal
BNC
Input Jack
52 mm
(2.05 in)
9-pin mini DIN
Input Selector
Switch
15 mm (0.59 in)
98 mm
(3.86 in)
Output Jack
BNC Jack for Clamp-On
Noise Sensor
Display
(5.7-inch Color STN LCD)
Earphone Jack
Volume Control
179 mm
(7.05 in)
170 mm
(6.69 in)
203 mm
(7.99 in)
Input Connector for
Model 9741 Clamp-On
Voltage Sensor
46 mm
(1.81 in)
Model 3145 -20 Main Device Only
Display
AC Adapter Jack
Grounding Terminal
Screen Contrast Adjustment
External Trigger
In/Out Terminals
USB Port
Battery Compartment on Rear
(for Battery Pack Model 9447)
Options for Model 3145-20
Note: Names of products in this brochure are trademarks or registered trademarks of their respective companies.
Peripherals and PC-Related Options
RS-232C CABLE 9612
LAN CABLE 9642
RS-232C CABLE 9721
9-pin mini DIN to 9-pin Dsub
cross-over cable for PC, 1.5 m length
Straight-through cable with
cross-over adapter, 5 m length
9-pin mini DIN to 9-pin Dsub straightthrough cable for modem, 1.5 m length
Clamp-On Noise Sensor
PC Card Adapter
(supplied)
A PC Card is required to save
measurement data.
We recommend purchasing a
PC Card at the time of ordering.
When purchasing a PC Card...
We recommend using only Hioki PC
Card options. Other PC Cards may fail to
read and write properly in the instrument,
and proper operation cannot be guaranteed.
Power-Related Options
Supplied Accessories
(when purchased separately)
BATTERY PACK 9447
7.2 V, 2400 mAh
AC ADAPTER 9418-15
CLAMP ON NOISE SENSOR 9754
PC CARD 128M 9726
(128 MB capacity)
PC CARD 256M 9727
(256 MB capacity)
PC CARD 512M 9728
(512 MB capacity)
PC CARD 1G 9729
(1 GB capacity)
100 to 240 V AC, Output 12 V 2.5 A
CHARGE STAND 9643
Charges one 9447. Use with the AC
Adapter 9418-15 connected to the
instrument.
The BATTERY PACK 9447 can be
charged in the NOISE HiLOGGER
with the supplied AC Adapter,
without using the CHARGE
STAND 9643. I f t h e C H A R G E
STAND, AC Adapter and BATTERY
PACK are purchased separately,
the battery can be charged with a
single device.
NOISE HiLOGGER 3145-20
Supplied Accessories:
Note:
AC ADAPTER 9418-15 ×1, PC Application Disc (CD-R) ×1, Carrying Strap ×1,
Carrying Case ×1, Instruction Manual ×1, Measurement Guide ×1, Ferrite Chokes ×3
Measurement is not possible with the NOISE HiLOGGER 3145 -20 alone.
The CLAMP ON NOISE SENSOR 9754 is required.
Carrying Case
Packing Example
[Stowed items]
3145 -20 main unit
(AC Adapter 9418-15 with power cord)
The following are options:
CLAMP ON NOISE SENSOR 9754
BATTERY PACK 9447
CHARGE STAND 9643
NOISE SEARCH TESTER 3144-20
Supplied Accessories:
CLAMP ON VOLTAGE SENSOR 9741 ×1, Carrying Case ×1, PC Application Disc (CD-R) ×1,
AA-size (LR6) alkaline batteries ×6, USB cable ×1, AC ADAPTER 9445-02 (UL Type) ×1 or 9445-03 (CEE Type) ×1,
Earphone ×1, Strap ×1, Instruction Manual ×1
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