Agilent U2300A Series USB Multifunction Data

Agilent U2300A Series USB Multifunction Data
Agilent U2300A Series
USB Multifunction Data
Acquisition Devices
User’s Guide
Agilent Technologies
Notices
© Agilent Technologies, Inc., 2006–2009
Warranty
No part of this manual may be reproduced in
any form or by any means (including electronic storage and retrieval or translation
into a foreign language) without prior agreement and written consent from Agilent
Technologies, Inc. as governed by United
States and international copyright laws.
The material contained in this document is provided “as is,” and is subject to being changed, without notice,
in future editions. Further, to the maximum extent permitted by applicable
law, Agilent disclaims all warranties,
either express or implied, with regard
to this manual and any information
contained herein, including but not
limited to the implied warranties of
merchantability and fitness for a particular purpose. Agilent shall not be
liable for errors or for incidental or
consequential damages in connection with the furnishing, use, or performance of this document or of any
information contained herein. Should
Agilent and the user have a separate
written agreement with warranty
terms covering the material in this
document that conflict with these
terms, the warranty terms in the separate agreement shall control.
Manual Part Number
U2351-90002
Edition
Fourth Edition, 1 September 2009
Printed in Malaysia
Agilent Technologies, Inc.
Bayan Lepas Free Industrial Zone,
11900 Penang, Malaysia
Trademark Acknowledgements
Pentium is a U.S. registered trademark of
Intel Corporation.
Microsoft, Visual Studio, Windows, and MS
Windows are trademarks of Microsoft Corporation in the United States and/or other
countries.
Technology Licenses
The hardware and/or software described in
this document are furnished under a license
and may be used or copied only in accordance with the terms of such license.
Restricted Rights Legend
U.S. Government Restricted Rights. Software and technical data rights granted to
the federal government include only those
rights customarily provided to end user customers. Agilent provides this customary
commercial license in Software and technical data pursuant to FAR 12.211 (Technical
Data) and 12.212 (Computer Software) and,
for the Department of Defense, DFARS
252.227-7015 (Technical Data - Commercial
Items) and DFARS 227.7202-3 (Rights in
Commercial Computer Software or Computer Software Documentation).
II
Safety Notices
CAUTION
A CAUTION notice denotes a hazard. It calls attention to an operating procedure, practice, or the like
that, if not correctly performed or
adhered to, could result in damage
to the product or loss of important
data. Do not proceed beyond a
CAUTION notice until the indicated
conditions are fully understood and
met.
WA R N I N G
A WARNING notice denotes a
hazard. It calls attention to an
operating procedure, practice, or
the like that, if not correctly performed or adhered to, could result
in personal injury or death. Do not
proceed beyond a WARNING
notice until the indicated conditions are fully understood and
met.
U2300A Series DAQ User’s Guide
Safety Information
The following general safety precautions must be observed during all phases of this instrument. Failure to comply
with these precautions or with specific warnings elsewhere in this manual violates safety standards of design,
manufacture, and intended use of the instrument. Agilent Technologies, Inc. assumes no liability for the
customer’s failure to comply with these requirements.
Safety Symbols
The following symbols indicate the precautions taken to maintain safe operation
of the instrument.
Direct current
Warning
Regulatory Markings
The CE mark shows that the product complies with all the
relevant European Legal Directives (if accompanied by a year, it
signifies when the design was proven).
The CSA mark is a registered trademark of the Canadian Standards Association. A CSA mark with the indicators "C" and "US"
means that the product is certified for both the U.S. and Canadian
markets, to the applicable American and Canadian standards.
The UL Mark is a registered trademark of Underwriters Laboratories Inc. UL listing mark with the indicators "C" and "US” indicates the product compliance with both Canadian and U.S.
requirements.
The C-tick mark is a registered trademark of the Spectrum Management Agency of Australia. This signifies compliance with the
Australian EMC Framework regulations under the terms of the
Radio Communications Act of 1992.
U2300A Series DAQ User’s Guide
III
General Safety Information
IV
WA R N I N G
• Do not use the device if it is damaged. Before you use the device,
inspect the case. Look for cracks or missing plastic. Do not operate the
device around explosive gas, vapor, or dust.
• Do not apply more than the rated voltage (as marked on the device)
between terminals, or between terminal and external ground.
• Always use the device with the cables provided.
• Observe all markings on the device before connecting to the device.
• Turn off the device and application system power before connecting to
the I/O terminals.
• When servicing the device, use only specified replacement parts.
• Do not operate the device with the removable cover removed or
loosened.
• Do not connect any cables and terminal block prior to performing
self-test process.
• Use only the power adapter supplied by the manufacturer to avoid any
unexpected hazards.
CAUTION
• Do not load the output terminals above the specified current limits.
Applying excessive voltage or overloading the device will cause
irreversible damage to the circuitry.
• Applying excessive voltage or overloading the input terminal will
damage the device permanently.
• If the device is used in a manner not specified by the manufacturer, the
protection provided by the device may be impaired.
• Always use dry cloth to clean the device. Do not use ethyl alcohol or
any other volatile liquid to clean the device.
• Do not permit any blockage of the ventilation holes of the device.
U2300A Series DAQ User’s Guide
Waste Electrical and Electronic Equipment (WEEE) Directive
2002/96/EC
This instrument complies with the WEEE Directive (2002/96/EC) marking
requirement. This affixed product label indicates that you must not discard this
electrical/electronic product in domestic household waste.
Product Category:
With reference to the equipment types in the WEEE directive Annex 1, this
instrument is classified as a “Monitoring and Control Instrument” product.
The affixed product label is shown as below:
Do not dispose in domestic household waste
To return this unwanted instrument, contact your nearest Agilent office, or visit:
http://www.agilent.com/environment/product
for more information.
U2300A Series DAQ User’s Guide
V
In This Guide...
1
Getting Started provides an overview of the U2300A Series, the product outlook,
product dimension, and product layout. This chapter also contains the
instructions on getting started with the U2300A Series from system requirements
checking to installations of hardware and software to the launching of the Agilent
Measurement Manager application software.
2
Connector Pins Configuration describes the connector pins configuration of
the U2300A Series USB DAQ and the signal connection between the U2300A and
external devices.
3
Features and Functions includes the information for better understanding on
the features and functions of the U2300A series USB DAQ. This includes the
operations of the analog input, analog output, digital input/output, and digital
counter subsystems.
4
Characteristics and Specifications specifies the characteristics,
environmental conditions, and specifications of the U2300A DAQ devices.
5
Calibration introduces the procedures to perform the calibration process for the
U2300A Series DAQ devices to minimize A/D measurement errors and D/A
output errors.
VI
U2300A Series DAQ User’s Guide
DECLARATION OF CONFORMITY
According to ISO/IEC Guide 22 and CEN/CENELEC EN 45014
Generic example
Manufacturer’s Name:
Manufacturer’s Address:
Agilent Technologies Microwave Products (M) Sdn. Bhd
Bayan Lepas Free Industrial Zone,
11900, Bayan Lepas, Penang, Malaysia
Declares under sole responsibility that the product as originally delivered
Product Name:
Models Number:
Product Options:
Agilent U2300A Series Multifunction USB Data
Acquisition(DAQ) device
U2331A, U2351A, U2352A, U2353A, U2354A, U2355A,
U2356A
This declaration covers all options of the above product(s)
complies with the essential requirements of the following applicable European Directives, and
carries the CE marking accordingly:
Low Voltage Directive (73/23/EEC, amended by 93/68/EEC)
EMC Directive (89/336/EEC, amended by 93/68/EEC)
and conforms with the following product standards:
EMC
Standard
Limit
IEC 61326-1:1997+A1:1998 / EN 61326-1:1997+A1:1998
CISPR 11:1990 / EN55011:1991
IEC 61000-4-2:1995+A1:1998 / EN 61000-4-2:1995
Class A Group 1
4 kV CD, 8 kV AD
IEC 61000-4-3:1995 / EN 61000-4-3:1995
IEC 61000-4-4:1995 / EN 61000-4-4:1995
IEC 61000-4-5:1995 / EN 61000-4-5:1995
IEC 61000-4-6:1996 / EN 61000-4-6:1996
IEC 61000-4-11:1994 / EN 61000-4-11:1994
3 V/m, 80-1000 MHz
0.5 kV signal lines, 1 kV power lines
0.5 kV line-line, 1 kV line-ground
3 V, 0.15-80 MHz
1 cycle / 100%
Canada: ICES-001:1998
Australia/New Zealand: AS/NZS 2064.1
The product was tested in a typical configuration with Agilent Technologies test systems.
Safety
IEC 61010-1:2001 / EN 61010-1:2001
Canada: CSA C22.2 No. 61010-1:2004
USA: UL 61010-1: 2004
This DoC applies to above-listed products placed on the EU market after:
20-October-2006
Mack Soh
Date
Quality Manager
For further information, please contact your local Agilent Technologies sales office, agent or distributor,
or Agilent Technologies Deutschland GmbH, Herrenberger Straße 130, D 71034 Böblingen, Germany.
Template: A5971-5302-2, Rev. B.01
U2300A Series DAQ User’s Guide
U2300 series
Rev 1.0
VII
Product Regulations
EMC
IEC 61326-1:1997+A1:1998 / EN 61326-1:1997+A1:1998
CISPR 11:1990 / EN 55011:1991 – Group 1 Class A
IEC 61000-4-2:1995+A1:1998 / EN 61000-4-2:1995 (ESD 4kV
Performance Criteria
U2331A, U2351A, U2352A U2353A,
U2354A, U2355A, U2356A
B
CD, 8kV AD)
IEC 61000-4-3:1995 / EN 61000-4-3:1995 (3V/m, 80% AM)
A
IEC 61000-4-4:1995 / EN 61000-4-4:1995 (EFT 0.5kV line-line,
B
1kV line-earth)
IEC 61000-4-5:1995 / EN 61000-4-5:1995 (Surge 0.5kV line-line,
B
1kV line-earth)
IEC 61000-4-6:1996 / EN 61000-4-6:1996 (3V, 0.15~80 MHz,
A
80% AM, power line)
IEC 61000-4-11:1994 / EN 61000-4-11:1994 (Dips 1 cycle,
C
100%)
Canada: ICES-001:1998
Australia/New Zealand: AS/NZS 2064.1
Safety
IEC 61010-1:2001 / EN 61010-1:2001
Canada: CSA C22.2 No. 61010-1:2004
USA: UL 61010-1: 2004
Additional Information:
The product herewith complies with the essential requirements of the Low Voltage Directive 73/23/EEC and the
EMC Directive 89/336/EEC (including 93/68/EEC) and carries the CE Marking accordingly (European Union).
1
Performance Criteria:
A Pass - Normal operation, no effect.
B Pass - Temporary degradation, self recoverable.
C Pass - Temporary degradation, operator intervention required.
D Fail - Not recoverable, component damage.
N/A – Not applicable
Models Description:
U2331A – USB 64SE/32DI, 12bits, 3MSa/s Multifunction USB DAQ
U2351A – USB 16SE/8DI, 16bits, 250kSa/s Multifunction USB DAQ
U2352A – USB 16SE/8DI, 16bits, 250kSa/s Multifunction USB DAQ (without Analog output)
U2353A – USB 16SE/8DI, 16bits, 500kSa/s Multifunction USB DAQ
U2354A – USB 16SE/8DI, 16bits, 500kSa/s Multifunction USB DAQ (without Analog output)
U2355A – USB 64SE/32DI, 16bits, 250kSa/s Multifunction USB DAQ
U2356A – USB 64SE/32DI, 16bits, 500kSa/s Multifunction USB DAQ
Notes:
Regulatory Information for Canada
ICES/NMB-001:1998
This ISM device complies with Canadian ICES-001.
Cet appareil ISM est confomre à la norme NMB-001 du Canada.
Regulatory Information for Australia/New Zealand
This ISM device complies with Australian/New Zealand AS/NZS 2064.1
VIII
U2300A Series DAQ User’s Guide
Contents
1
Getting Started
Introduction 2
Product Overview 3
Product outlook 3
Product dimension 4
Standard Purchase Items Checklist 6
Software Installation 7
A. Check Your System Requirements 8
B. Install the Agilent IO Libraries Suite 9
C. Install the Hardware Driver 10
D. Install the Agilent Measurement Manager 13
E. Connect Your Device to the PC 17
F. Launch Your Agilent Measurement Manager 20
L-Mount Kit Installation 21
General Maintenance 23
2
Connector Pins Configuration
Connector Pins Configuration 26
Analog Input Signal Connection 33
Types of signal sources 33
Input configurations 34
U2300A Series DAQ User’s Guide
IX
Contents
3
Features and Functions
Features Overview 40
Analog Input Operation Mode 41
Scan list (for continuous mode only) 45
Burst mode 46
A/D data conversion 47
AI data format 49
Analog Output Operation Mode 51
D/A reference voltage 55
AO data format 55
Digital I/O 58
General Purpose Digital Counter 61
Trigger Sources 67
Trigger types 68
Digital trigger 71
Analog trigger 72
SCPI Programming Examples 75
Analog input 75
Analog output 78
4
Characteristics and Specifications
Product Characteristics 82
Product Specifications 83
Basic multifunction DAQ device specifications 83
High density multifunction DAQ device specifications 87
Electrical Measurement Specifications 91
Basic multifunction USB DAQ device specifications 91
High density multifunction USB DAQ device specifications 93
X
U2300A Series DAQ User’s Guide
Contents
5
Calibration
Self-Calibration 96
U2300A Series DAQ User’s Guide
XI
Contents
XII
U2300A Series DAQ User’s Guide
List of Figures
Figure 2-1 Floating source and RSE input connections 34
Figure 2-2 Ground-referenced sources and NRSE input
connections 35
Figure 2-3 Ground-referenced source and differential input
mode 36
Figure 2-4 Floating source and differential input 37
Figure 3-1 Functional block diagram of U2300A series DAQ
device 42
Figure 3-2 Burst mode enabled and disabled during data
acquisition 46
Figure 3-3 Analog output operation mode 51
Figure 3-4 General purpose digital I/O of Agilent U2300A series
DAQ 58
Figure 3-5 General purpose digital counter 61
Figure 3-6 Totalizer mode 62
Figure 3-7 Pre-trigger 68
Figure 3-8 Middle-trigger 69
Figure 3-9 Post-trigger 70
Figure 3-10 Delay-trigger 71
Figure 3-11 Positive and negative edge of digital trigger. 71
Figure 3-12 Above high trigger condition 72
Figure 3-13 Below low trigger condition 73
Figure 3-14 Window trigger condition 74
U2300A Series DAQ User’s Guide
XIII
XIV
U2300A Series DAQ User’s Guide
List of Tables
Table 2-1
Table 2-2
Table 3-1
Table 3-2
Table 3-3
68-pin VHDCI connector pins descriptions 30
SSI connector pins descriptions 31
Analog input operation overview 42
Structure of a scan list with four entries 45
Analog input range and digital code output for
bipolar 49
Table 3-4 Analog input range and digital code output for
unipolar 49
Table 3-5 Analog input range and digital code output for
bipolar 50
Table 3-6 Analog input range and digital code output for
unipolar 50
Table 3-7 Analog output operation overview 52
Table 3-8 Digital code and voltage output table for bipolar setting
(U2331A, U2355A and U2356A) 56
Table 3-9 Digital code and voltage output table for unipolar setting
(U2331A, U2355A and U2356A) 56
Table 3-10 Digital code and voltage output table for bipolar setting
(U2351A and U2353A) 57
Table 3-11 Digital code and voltage output table for unipolar setting
(U2351A and U2353A) 57
Table 3-12 Trigger type for single-shot acquisition of continuous
mode 67
Table 3-13 Trigger type for continuous acquisition of continuous
mode 67
Table 4-1 Analog input product specifications for basic
multifunction DAQ device 83
Table 4-2 Analog output product specifications for basic
multifunction DAQ device 84
U2300A Series DAQ User’s Guide
XV
Table 4-3 Digital I/O product specifications for basic multifunction
DAQ device 84
Table 4-4 General purpose digital counter product specifications
for basic multifunction DAQ device 85
Table 4-5 Analog trigger product specifications for basic
multifunction DAQ device 85
Table 4-6 Digital trigger product specifications for basic
multifunction DAQ device 85
Table 4-7 Calibration product specifications for basic multifunction
DAQ device 86
Table 4-8 General product specifications for basic multifunction
DAQ device 86
Table 4-9 Analog input product specifications for high density
multifunction DAQ device 87
Table 4-10 Analog output product specifications for high density
multifunction DAQ device 88
Table 4-11 Digital I/O product specifications for high density
multifunction DAQ device 88
Table 4-12 General purpose digital counter product specifications
for high density multifunction DAQ device 89
Table 4-13 Analog trigger product specifications for high density
multifunction DAQ device 89
Table 4-14 Digital trigger product specifications for high density
multifunction DAQ device 89
Table 4-15 Calibration product specifications for high density
multifunction DAQ device 90
Table 4-16 General product specifications for high density
multifunction DAQ device 90
Table 4-17 Analog input electrical measurement specifications for
basic multifunction USB DAQ device 91
Table 4-18 Analog output electrical measurement specifications
for basic multifunction USB DAQ device 91
Table 4-19 Analog input electrical measurement specifications for
high density multifunction USB DAQ device 93
XVI
U2300A Series DAQ User’s Guide
Table 4-20 Analog output electrical measurement specifications
for high density multifunction USB DAQ device 93
Table 4-20 Analog output electrical measurement specifications
for high density multifunction USB DAQ device 93
U2300A Series DAQ User’s Guide
XVII
XVIII
U2300A Series DAQ User’s Guide
Agilent U2300A Series USB Multifunction Data Acquisition Devices
User’s Guide
1
Getting Started
Introduction 2
Product Overview 3
Product outlook 3
Product dimension 4
Terminal Block Overview 5
Standard Purchase Items Checklist 6
Software Installation 7
A. Check Your System Requirements 8
B. Install the Agilent IO Libraries Suite 9
C. Install the Hardware Driver 10
D. Install the Agilent Measurement Manager 13
E. Connect Your Device to the PC 17
F. Launch Your Agilent Measurement Manager 20
L-Mount Kit Installation 21
General Maintenance 23
This chapter provides an overview of the U2300A series, the
product outlook, product dimension, and product layout.
This chapter also contains instructions on how to get started
with the U2300A series that begins from system
requirements checking to installations of hardware and
software to the launching of the Agilent Measurement
Manager application software.
Agilent Technologies
1
1
Getting Started
Introduction
The Agilent U2300A series USB multifunction data acquisition
(DAQ) devices can operate as a standalone unit or modular unit
(when used in a chassis). The U2300A series consists of basic
multifunction models (U2351A, U2352A, U2353A, and U2354A) and
high density multifunction models (U2355A, U2356A, and U2331A).
The basic multifunction DAQ can sample up to 500 kSa/s with a
resolution of 16 bits. Whereas, the high density multifunction DAQ
is able to sample up to 3 MSa/s for a single channel and up to 1
MSa/s for multiple channels. This makes it ideal when dealing with
high- density analog input/output signals and different input
ranges.
The U2300A series DAQ also features a 24- bit programmable
digital I/O and two independent 31- bit general purpose digital
counter. In addition to that, the U2300A is able to perform analog
and digital functions at full speed. It has a resolution range of 12
to 16 bits, with no missing codes. It comes with self calibration
capability. This enables the device to readjust its offset within the
specified accuracies and ranges.
The U2300A series DAQ devices are compatible with a wide range
of Application Development Environment (ADE), such as Agilent
VEE, LabVIEW and Microsoft Visual Studio. Bundled with the
purchase of every device is an easy- to- use data logging software,
the Agilent Measurement Manager.
2
U2300A Series DAQ User’s Guide
Getting Started
1
Product Overview
Product outlook
Top view
Plastic Casing
Front view
Connector 1
AI/AO Indicator
Power Indicator
Connector 2
Rear view
USB Inlet
Power Inlet
U2300A Series DAQ User’s Guide
3
1
Getting Started
Product dimension
Without plastic casing
With plastic casing
Top view
Top view
174.54 mm
182.40 mm
Front view
Front view
25.00 mm
44.00 mm
120.00 mm
4
105.00 mm
U2300A Series DAQ User’s Guide
Getting Started
1
Terminal Block Overview
Front view
85.20 mm
103.00 mm
Side view
42.96 mm
28.40 mm
U2300A Series DAQ User’s Guide
5
1
Getting Started
Standard Purchase Items Checklist
✔ AC/DC power adapter
✔ Power cord
✔ USB extension cable
✔ L–Mount kit (used with modular instrument chassis)
✔ Agilent U2300A Series Data Acquisition Devices and Agilent
Measurement Manager Quick Start Guide
✔ Agilent USB Modular Instrument U2300A & U2700A Series
Product Reference CD- ROM
✔ Agilent Automation- Ready CD (contains the Agilent IO Libraries
Suite)
✔ Certificate of Calibration
6
U2300A Series DAQ User’s Guide
Software Installation
If you would like to use the U2300A series USB DAQ devices with
the Agilent Measurement Manager application software, follow the
step- by- step instructions as shown in the following flowchart.
NOTE
•
Agilent VEE, LabVIEW, MATLAB or Microsoft Visual Studio), you can skip
steps D and F in the following flowchart.
•
You may be required to install the IVI-COM driver before using the U2300A
series with other ADEs.
A. Check
Check Your
Your System
System Requirements
Requirements
A.
B. Install the Agilent
Agilent IO
IO Libraries
Libraries Suite
C.
C. Install
Install the
the Hardware
Hardware Driver
Driver
D.
D. Install
Install the
the Agilent
Agilent Measurement
Measurement Manager
Manager
E. Connect
Connect Your
Your Device
Device to
PC
E.
to the
the PC
F. Launch
Your Agilent
F.
Launch Your
Agilent Measurement
Measurement Manager
Manager
7
1
Getting Started
A. Check Your System Requirements
Before installing the hardware driver and the Agilent Measurement
Manager software, ensure that your PC meets the following
minimum system requirements for installation.
Processor
1.6 GHz Pentium® IV or higher
Operating system
Windows® XP Professional or Home Edition
(Service Pack 1 or later), Windows® 2000
Professional (Service Pack 4 or later)
Browser
Microsoft® Internet Explorer 5.01 or higher
Available RAM
512 MB or higher recommended
Hard disk space
1 GB
Prerequisite
• Agilent IO Libraries Suite 14.21 or higher
• Agilent T&M Toolkit 2.1 Runtime version2
• Microsoft.NET Framework version 1.1 and 2.02
• Agilent T&M Toolkit Redistributable Package
2.1 patch2
Video
Super VGA (800x600) 256 colors or higher
1 Available in Agilent Automation-Ready CD.
2 Bundled with Agilent Measurement Manager application software installer
8
U2300A Series DAQ User’s Guide
Getting Started
1
B. Install the Agilent IO Libraries Suite
It is recommended to install the latest version of Agilent IO
Libraries.
NOTE
You must have Administrator privileges to install Agilent IO Libraries Suite and to
run Connection Expert.
1 Verify that your PC meets the minimum system requirements.
(See “A. Check Your System Requirements” on page 8.)
2 If you are upgrading to IO Libraries Suite from a previous
version of IO Libraries, you must remove the instruments and
interfaces listed below before you upgrade your software. This
step is necessary in order for these devices to obtain the correct
drivers to work with Agilent IO Libraries Suite.
a Disconnect any USB instruments from your PC.
b Disconnect any Agilent 82357 USB/GPIB interface converters
from your PC.
c Disconnect any Agilent E8491 IEEE 1394 PC Link to VXI
interfaces from your PC.
3 Close all other applications on your PC.
4 Insert the Agilent Automation- Ready CD with Agilent IO
Libraries Suite into the CD- ROM drive of your PC. Wait a few
seconds for the auto- run window to appear. If the auto- run
window does not appear automatically,
• Click Start > Run... and type <drive>:\autorun\
auto.exe, where <drive> is your CD drive letter.
5 When the auto- run window appears, click Install Software
once, and wait for the InstallShield Wizard to appear.
6 When the InstallShield Wizard appears, click Next > to begin the
IO Libraries Suite software installation. Follow the instructions
in the InstallShield Wizard and choose the options according to
your preferences.
For more information to install the Agilent IO Libraries Suite,
refer to Agilent Technologies USB/LAN/GPIB Interfaces Connectivity
Guide available in the Agilent Automation- Ready CD with the file
name called “connectivity_guide.pdf”.
U2300A Series DAQ User’s Guide
9
1
Getting Started
C. Install the Hardware Driver
NOTE
• Ensure that the USB device is disconnected from your PC before installing the
driver.
• Ensure that the Agilent IO Libraries Suite version 14.2 or higher is installed
before proceeding.
1 Insert the Agilent USB Modular Instrument Product Reference
CD- ROM into the CD- ROM drive of your PC.
2 The installer will automatically launch the Agilent Modular
Products Installation Menu. Select Hardware Driver to begin the
hardware driver installation.
3 If the menu does not launch automatically, go to Start > Run
(on the Windows Start menu) and type <drive>:\Driver\
Hardware\setup_hw.exe, where drive is your CD- ROM
drive. Click OK to begin installation.
4 The following dialog will appear. Click Next > to begin the
installation.
10
U2300A Series DAQ User’s Guide
Getting Started
1
5 If you have previous hardware driver version, the dialog box
will have the Modify, Repair and Remove options as shown
below. Choose the option you like and click Next > to proceed.
U2300A Series DAQ User’s Guide
11
1
Getting Started
6 If you do not previously install any hardware driver, the
following dialog box will be shown. Select Typical to install the
all the features, otherwise select Custom to choose which
program features you want to install. Click Next > to proceed.
7 Choose the option you like and the following dialog will appear
showing all the components that will be installed. Click Install
to begin installation.
12
U2300A Series DAQ User’s Guide
Getting Started
1
8 Click Finish when the installation has completed.
D. Install the Agilent Measurement Manager
NOTE
• Ensure that the Agilent IO Libraries Suite version 14.2 or higher is installed
before proceeding.
• You must have Administrator privileges to install Agilent IO Libraries Suite
and to run Connection Expert.
1 Verify that you have the hardware driver installed.
2 Select Measurement Manager on the Agilent Modular Products
Installation Menu to begin the installation.
U2300A Series DAQ User’s Guide
13
1
Getting Started
3 If the installation menu does not appear after a few seconds, go
to Start > Run (on the Windows Start menu) and type
<drive>:\Application\Modular Instruments
Measurement Manager\setup.exe, where drive is your
CD- ROM drive.
4 Click OK to begin installation.
5 If you do not have the Agilent T&M Toolkit 2.1 Runtime version,
Microsoft .NET Framework version 1.1 and 2.0, and Agilent T&M
Toolkit Redistributable Package 2.1 patch installed, the
InstallShield Wizard software pre- requisite will appear as shown
in the following figure.
14
U2300A Series DAQ User’s Guide
Getting Started
1
6 Click OK to begin installation of the listed missing software.
NOTE
If you have Agilent VEE installed, you may need to install the Agilent T&M
Toolkit 2.1 Runtime version manually.
• Click Start > Run...
• Type <drive>:Utilities\Agilent T&M Toolkit Redistributable Package 2.1\setup.exe, where <drive> is
your CD drive letter.
7 Once the above installation is completed, installation of the
Agilent Measurement Manager software will proceed as normal.
8 Follow the instructions on your screen to proceed with the
Agilent Measurement Manager software installation.
9 When the InstallShield Wizard appears, click Next > to begin
the Agilent Measurement Manager installation.
10 Read the License Agreement carefully. If you accept the terms,
select the radio button that labeled I accept the terms in the
license agreement and click Next > to continue.
U2300A Series DAQ User’s Guide
15
1
Getting Started
11 Type in your user name in the User Name text box and
organization name in the Organization text box. If there are
more than one person using the same computer, select the radio
button that labeled Anyone who uses this computer, otherwise
select radio button labeled Only for me.
12 The default location to install the software is C:\Program
Files\Agilent\Measurement Manager 1.4\. If you prefer
to install the software to other location, click Change... to
change the destination of the folder. When you are done, Click
Next > to continue.
13 If you are ready to install the Agilent Measurement Manager,
click Install to begin installation.
14 Click Finish when the installation has completed. A shortcut for
this software will be created on your desktop.
NOTE
16
USING THE LICENSED MATERIALS INDICATES YOUR ACCEPTANCE OF THE LICENSE
TERMS. IF YOU DO NOT AGREE TO ALL OF THESE TERMS, YOU MAY RETURN ANY
UNOPENED LICENSED MATERIALS FOR A FULL REFUND. IF THE LICENSED MATERIALS
ARE BUNDLED OR PRE-LOADED WITH ANOTHER PRODUCT, YOU MAY RETURN THE
ENTIRE UNUSED PRODUCT FOR A FULL REFUND.
U2300A Series DAQ User’s Guide
Getting Started
1
E. Connect Your Device to the PC
1 After all installations have been successfully completed, connect
the power cord to the AC/DC power adapter. The AC/DC power
adapter requirements are 110 V/240 VAC, 50/60 Hz, with output
voltage of +12 VDC.
2 Insert the DC output plug from the AC/DC power adapter to the
power jack on the rear panel of the USB device.
3 Connect any of the U2300A series instrument to any USB ports
on your PC with the USB cable.
4 If this is the first time you connect the instrument to your PC,
the Found New Hardware Wizard window will appear as shown
below. Select Yes, this time only and click Next to proceed.
5 Select Install the software automatically (Recommended) and
click Next.
6 A warning message will appear in Hardware Installation
window, as shown below. Click Continue Anyway to proceed
with the installation of the driver.
U2300A Series DAQ User’s Guide
17
1
Getting Started
NOTE
If you do not wish to receive similar warning message in future, follow the instructions
below.
1 Go to Start > Control Panel and double-click System.
2 Select Hardware tab and on the Drivers panel click Driver Signing. The Driver Signing
Options dialog box will appear.
3 Select Ignore to disable the warning message.
7 Click Finish to complete the installation.
8 When installation has been completed, the Assign USB device
alias window will appear. Each time a USB device is plugged in,
this dialog box will appear. To configure or disable this dialog,
select an option in the Show this dialog panel and click OK.
18
U2300A Series DAQ User’s Guide
Getting Started
1
9 The USB device is now ready for usage.
NOTE
Before proceeding, you may verify your connected device using Agilent Connection Expert.
U2300A Series DAQ User’s Guide
19
1
Getting Started
F. Launch Your Agilent Measurement Manager
NOTE
• Agilent IO Control will launch automatically when you start your PC.
• Launching Agilent Measurement Manager without Agilent IO Control
running will cause Agilent Measurement Manager to fail from detecting
or establishing any connection with the USB device connected to your PC.
• To launch Agilent IO Control, go to Start > All Programs > Agilent IO
Libraries Suite > Agilent Connection Expert.
1 Double- click the Agilent Measurement Manager software icon on
your desktop or go to Start > All Programs > Agilent >
Modular Products > Measurement Manager to launch the
software.
2 The Select USB Device dialog box will appear. It will show all
the devices that are connected to your PC. To start the
application, select a DAQ device and click OK to establish the
connection.
20
U2300A Series DAQ User’s Guide
Getting Started
1
L-Mount Kit Installation
The L- Mount kit is to be used with Agilent U2781A USB modular
instrument chassis. The following instructions describes simple
procedures of installing the L- Mount kit to a U2300A DAQ device.
1
Unpack the L- Mount kit from
the packaging.
2
Remove your DAQ device from
its plastic casing by pulling the
bumper (front end of the casing) in
an outward direction. Then, lift the
plastic body casing and remove it
from your DAQ device.
3
Using a Philips screw driver,
screw the L- Mount kit to your DAQ
device.
U2300A Series DAQ User’s Guide
21
1
Getting Started
4
To slot in the DAQ module to
your chassis, turn your DAQ
module perpendicularly and ensure
that the 55- pin backplane
connector is at the bottom side of
the DAQ module.
5
Your DAQ device is now ready
to be plug into an instrument
chassis.
22
U2300A Series DAQ User’s Guide
Getting Started
1
General Maintenance
NOTE
Repair or service which are not covered in this manual should only be
performed by qualified personnel.
To remove the dirt or moisture of the DAQ device, follow the
instructions below.
1 Power off your DAQ device and remove the AC/DC adapter cord
and I/O cable from your device.
2 Remove your DAQ device from its plastic casing by pulling at
the bumper (front end of the casing) in an outward direction.
Then, lift the plastic body casing and remove it from your DAQ
device.
3 Holding your DAQ device, shake out any dirt that may have
accumulated on the panel of your DAQ device.
4 Wipe your DAQ device with a dry cloth.
U2300A Series DAQ User’s Guide
23
1
24
Getting Started
U2300A Series DAQ User’s Guide
Agilent U2300A Series USB Multifunction DAQ
User’s Guide
2
Connector Pins Configuration
Connector Pins Configuration 26
Analog Input Signal Connection 33
Types of signal sources 33
Input configurations 34
This chapter describes the connector pins configuration of
the U2300A series USB DAQ and the signal connection
between the U2300A and external devices.
Agilent Technologies
25
2
Connector Pins Configuration
Connector Pins Configuration
The U2300A series DAQ is equipped with 68–pin very high
density cable interconnect (VHDCI) type connectors. These
connector pins are used for digital input/output, analog
input/output, counters and other external reference/trigger
signal.
Pins Configuration of Connector 1 for U2331A, U2355A, U2356A
26
U2300A Series DAQ User’s Guide
Connector Pins Configuration
NOTE
2
(AIH101..132) and (AIL101..132) are for differential mode connection pair.
Pins Configuration of Connector 2 for U2355A, U2356A, U2331A
U2300A Series DAQ User’s Guide
27
2
Connector Pins Configuration
Pins Configuration for U2352A, U2354A
NOTE
28
(AIH101..108) and (AIL101..108) are for differential mode connection pair.
U2300A Series DAQ User’s Guide
Connector Pins Configuration
2
Pins Configuration for U2351A, U2353A
NOTE
U2300A Series DAQ User’s Guide
(AIH101..108) and (AIL101..108) are for differential mode connection pair.
29
2
Connector Pins Configuration
Table 2-1 68-pin VHDCI connector pins descriptions
Signal Name
Direction Reference Description
Ground
AI_GND
N/A
N/A
Analog input (AI) ground. All three ground
references (AI_GND, AO_GND, and D_GND) are
connected together on board.
U2351A/U2352A/U2353A/U2354A
For 16 Channels: AI<101..116> Input
AI_GND
Analog input channels 101~116. Each channel pair,
AI<i, i+8>(i = 101..108), can be configured either as
two
single-ended inputs or one differential input (marked as
AIH<101..108> and AIL<101..108>).
For 64 Channels: AI<101..164>
AI_SENSE
Input
AI_GND
EXTA_TRIG
AO201
AO202
AO_EXT_REF
AO_GND
EXTD_AO_TRIG
EXTD_AI_TRIG
RESERVED
COUNT<301,302>_CLK
COUNT<301,302>_GATE
COUNT<301,302>_OUT
COUNT<301,302>_UPDOWN
EXT_TIMEBASE
D_GND
DIO501<7,0>
DIO502<7,0>
Input
Output
Output
Input
N/A
Input
Input
Output
Input
Input
Input
Input
Input
N/A
PIO
PIO
AI_GND
AO_GND
AO_GND
AO_GND
N/A
D_GND
D_GND
N/A
D_GND
D_GND
D_GND
D_GND
D_GND
N/A
D_GND
D_GND
30
U2331A/U2356A/U2355A
Analog input channels 101~164). Each channel pair,
AI<i, i+32> (i = 101..132), is configured either as two
single-ended inputs or one differential input (marked
as AIH<101..132> and AIL<101..132>)
Analog input sense. The reference pin for any
AI<101..116> or AI<101..164> channels in NRSE input
configuration.
External AI analog trigger
Analog output channel 1
Analog output channel 2
External reference for AO channels
Analog ground for AO
External AO waveform trigger
External AI digital trigger
Reserved pins. Do not connect them to any signal.
Source of counter <301,302>
Gate of counter <301,302>
Output of counter <301,302>
Up/Down of counter <301,302>
External Timebase
Digital ground
Programmable DIO of Channel 501
Programmable DIO of Channel 502
U2300A Series DAQ User’s Guide
Connector Pins Configuration
2
Table 2-1 68-pin VHDCI connector pins descriptions
DIO503<4,0>
DIO504<4,0>
PIO
PIO
D_GND
D_GND
Programmable DIO of Channel 503
Programmable DIO of Channel 504
55-Pin Backplane Connector Pins Configuration
11
GND
+12V
+12V
GND
USB_D+
USB_D-
GND
10
GND
+12V
+12V
+12V
GND
GND
GND
9
GND
+12V
+12V
+12V
GND
USB_VBUS
GND
8
GND
LBL0
BRSV
GND
TRIG0
LBR0
GND
7
GND
LBL1
GA0
TRIG7
GND
LBR1
GND
6
GND
LBL2
GA1
GND
TRIG1
LBR2
GND
5
GND
LBL3
GA2
TRIG6
GND
LBR3
GND
4
GND
LBL4
STAR_TRIG
GND
TRIG2
LBR4
GND
3
GND
LBL5
GND
TRIG5
GND
LBR5
GND
2
GND
LBL6
CLK10M
GND
TRIG3
LBR6
GND
1
GND
LBL7
GND
TRIG4
GND
LBR7
GND
Z
A
B
C
D
E
F
NOTE
The 55-pin backplane connector is used when the DAQ devices are used
as modular with the modular instrument chassis. For more detail, refer to
Agilent U2781A USB Modular Instrument Chassis User’s Guide.
Table 2-2 SSI connector pins descriptions
U2300A Series DAQ User’s Guide
SSI timing signal
Functionality
+12V
+12 V power from backplane
GND
Ground
BRSV
Reserved pin
TRIG0~TRIG7
Trigger bus 0 ~ 7
STAR_TRIG
Star trigger
CLK10M
10MHz reference clock
USB_VBUS
USB bus power, +5 V
USB_D+, USB_D-
USB differential pair
31
2
Connector Pins Configuration
Table 2-2 SSI connector pins descriptions
32
LBL <0..7> and
LBR <0..7>
Reserved pin
GA0, GA1, GA2
Geographical address pin
U2300A Series DAQ User’s Guide
Connector Pins Configuration
2
Analog Input Signal Connection
The U2300A series DAQ provides up to 64 single–ended (SE)
or 32 differential analog input (DI) channels. The analog
signal is converted to digital represented value by the A/D
converter. In order to obtain a more accurate measurement
from the A/D conversion, it is important to understand the
type of signal source of analog input modes RSE, NRSE, and
DIFF.
Types of signal sources
Ground-referenced signal sources
A ground- referenced signal source is defined as a signal
source that is connected in some way to the building’s
grounding system. This means that the signal source is
connected to a common ground point with respect to the
U2300A series DAQ (assume the host PC which is connected
with DAQ is in the same power ground).
Floating signal sources
A floating signal source is a signal that is not connected to
the building’s grounding system. It is also a device with an
isolated output. Example of floating signal sources are
optical isolator output, transformer output, and
thermocouple.
U2300A Series DAQ User’s Guide
33
2
Connector Pins Configuration
Input configurations
Single-ended connections
A single- ended connection is applicable when the analog
input signal is referenced to a ground and can be shared
with other analog input signals. There are two different
types of single- ended connections, which are RSE and NRSE
configuration.
• Referenced Single-Ended (RSE) mode
In referenced single- ended mode, all the input signals
are connected to the ground provided by the U2300A
series DAQ and suitable for connections with floating
signal sources. The following figure illustrates the RSE
mode.
Figure 2-1 Floating source and RSE input connections
NOTE
34
When more than two floating sources are connected, these sources are
referenced to the same common ground.
U2300A Series DAQ User’s Guide
Connector Pins Configuration
2
• Non-Referenced Single-Ended (NRSE) Mode
In NRSE mode, the DAQ device does not provide the
grounding point. The ground reference point is
provided by the external analog input signal. You can
connect the signals in NRSE mode to measure
ground- referenced signal sources, which are connected
to the same grounding point. The following figure
illustrates the connection. The signal local ground
reference is connected to the negative input of the
instrumentation Amplifier (AI_SENSE pin on
connector1). Hence, any potential difference of the
common mode ground between signal ground and the
signal ground on DAQ board will be rejected by the
instrumentation amplifier.
Figure 2-2 Ground-referenced sources and NRSE input connections
U2300A Series DAQ User’s Guide
35
2
Connector Pins Configuration
Differential Input Mode
The differential input mode provides two inputs that respond
to the difference of the signal voltage. The analog input of
the U2300A series DAQ has its own reference ground or
signal return path. The differential mode can be used for the
common- mode noise rejection if the signal source is
ground- referenced. The following figure shows the
connection of ground- referenced signal sources under
differential input mode.
Figure 2-3 Ground-referenced source and differential input mode
36
U2300A Series DAQ User’s Guide
Connector Pins Configuration
2
The following figure illustrates the connection of a floating
signal source to the U2300A series DAQ in differential input
mode. For floating signal sources, additional resistor is
needed at each channel to provide a bias return path. The
resistor value is equivalent to about 100 times the source
impedance. If the source impedance is less than 100 Ω, you
can connect the negative polarity of the signal directly to
AI_GND, as well as the negative input of the Instrumentation
Amplifier. The noise couples in differential input mode are
less compared to the single- ended mode.
Figure 2-4 Floating source and differential input
NOTE
• Agilent U2300A series DAQ is designed with high input impedance.
Please ensure that all the connection are connected properly before
acquiring any data. Failing to do so may cause data fluctuation or
erroneous readings.
• Unused pins at multiplexing DAQ inputs can be treated as floating
source with infinite output impedance. Therefore, necessary grounding
system is required in user application system.
U2300A Series DAQ User’s Guide
37
2
38
Connector Pins Configuration
U2300A Series DAQ User’s Guide
Agilent U2300A Series USB Multifunction DAQ
User’s Guide
3
Features and Functions
Features Overview 40
Analog Input Operation Mode 41
Scan list (for continuous mode only) 45
Burst mode 46
A/D data conversion 47
Analog Output Operation Mode 51
AI data format 49
D/A reference voltage 55
AO data format 55
Digital I/O 58
General Purpose Digital Counter 61
Trigger Sources 67
Trigger types 68
Digital trigger 71
SCPI Programming Examples 75
Analog trigger 72
Analog input 75
Analog output 78
This chapter describes the features and functions of the
U2300A series USB DAQ devices. This includes the
operations of the analog input operation mode, analog
output operation mode, digital I/O, and general purpose
digital counter. This chapter also explains the trigger
sources.
Agilent Technologies
39
3
Features and Functions
Features Overview
U2351A/U2352A/U2355A
16- bit analog input resolution with
sampling rate of 250 kSa/s
U2353A/U2354A/U2356A
16- bit analog input resolution with
sampling rate of 500 kSa/s
U2331A
12- bit analog input resolution with
sampling rate up to 3 MSa/s per
single channel
• Resolution of 12- bit and 16- bit with no missing codes.
• Up to 64 single- ended (SE) inputs or 32 differential
inputs (DI).
• Up to 100 selectable analog input channels for sequencing
scanning.
• Programmable bipolar and unipolar analog input.
• Self- calibration supported.
• USBTMC 488.2 compliant.
• Hi- Speed USB 2.0 interface.
• Multiple trigger sources none (intermediate trigger),
external analog/digital trigger, and SSI/star trigger (used
with modular chassis).
40
U2300A Series USB DAQ User’s Guide
Features and Functions
3
Analog Input Operation Mode
Analog- to- Digital (A/D) conversion converts analog voltage
into digital information, which enables the computer to
process or to store the signals. Before using an A/D
converter, you should define the properties of the measured
signals, which are the range, polarity (Unipolar/Bipolar) and
signal type. You can also set the desired channels.
The A/D acquisition requires a trigger source. Once the
trigger condition is matched, only then the data acquisition
begins. The measured signal is buffered in a data FIFO.
buffer. The analog inputs are able to provide input voltages
between ±1.25 V to ±10 V (16- bit ADC), except for U2331A
with ±0.05 V to ±10 V (12- bit ADC). The following diagram
illustrates the functional block diagram of the U2300A series
DAQ device.
According to the functional block diagram, when the U2300A
series DAQ device is switched on, the calibration constants
is loaded from the on- board EEPROM to ensure both the
Calibration DACs and PGA circuit are functioning correctly.
Users are required to set the input configuration in the Scan
List, trigger source, and trigger mode using SCPI commands.
The DAQ will start with different scan data acquisition
timings, and when the trigger condition is matched, a trigger
event will take place. The data will be transferred to the
system memory using suitable data transfer mode. The input
signal types are single- ended and differential.
U2300A Series USB DAQ User’s Guide
41
3
Features and Functions
Figure 3-1 Functional block diagram of U2300A series DAQ device
There are two different modes of analog input operation,
which are the polling and continuous.
Table 3-1 Analog input operation overview
Operation
Modes
Types of Acquisition
Analog Input
Polling Mode
Single A/D data acquisition
Continuous Mode
• Single-shot acquisition
• Continuous acquisition
42
U2300A Series USB DAQ User’s Guide
Features and Functions
3
Polling mode
This is the easiest way to acquire a single A/D data. The
A/D converter starts converting one reading whenever the
dedicated SCPI command is executed. This mode is well
suited in applications that needs to process A/D data in real
time. In this mode, the timing of the A/D conversion is fully
controlled by the software. However, it is difficult to control
the A/D conversion rate.
In polling mode, the properties of the measured signal
should be defined. The properties are range, polarity
(unipolar/bipolar) and signal type. Signal type consists of
RSE, NRSE and DIFF.
The default polarity is bipolar. The SCPI command for
performing the polling mode measurement is under
MEASure subsystem.
NOTE
For more information on MEASure subsystem, refer to the Agilent U2300A
Series Multifunction USB Data Acquisition Programming Guide.
Continuous mode
Continuous mode is divided into two types, single- shot and
continuous acquisition. In single- shot acquisition, the data is
acquired at a specified sample points and processed once.
On the other hand, the continuous acquisition allows you to
acquire data continuously until a STOP command is sent.
The SCPI commands below are used to start the acquisition
process:
• Single- shot acquisition:
DIGitize
• Continuous acquisition:
RUN
U2300A Series USB DAQ User’s Guide
43
3
Features and Functions
In continuous mode, there are two parameters that need to
be specified:
Sampling rate
Specify the sampling rate of each AI channel. Since the
U2300A series DAQ devices comes with multiplexing
analog input, the maximum sampling rate depends on the
ADC’s sampling rate and the entry number in the scan
list.
For example, if four channels are specified in the scan
list of the U2356A, the maximum sampling rate is actually
500 kSa/s divided by four, which is 125 kSa/s for each
channel. However, in the U2331A, the maximum sampling
rate is only up to 1 MSa/s when switching of multiple
channels is enabled.
Sample points
Specify the number of acquisition points for the channel.
For example, if 800 sample points and four channels are
specified in the scan list, there will be total of 3200
samples to be acquired.
NOTE
44
The maximum sample points for single-shot acquisition are 8 MSa and for
continuous acquisition is 4 MSa, where both types of acquisitions are of
continuous input mode.
U2300A Series USB DAQ User’s Guide
Features and Functions
3
Scan list (for continuous mode only)
You are required to set up the scan list to include all
desired analog input channels. By default, the U2300A series
scans only CH 101 with the following settings.
• Range: ±10 V
• Input signal type: Single- ended
• Polarity: Bipolar
The settings in channel configuration entry remain
unchanged when the desired data is sampled. You do not
need to reconfigure the channel configuration entry if you
wish to sample new data using the same order and settings.
The maximum number of entries you can set is 100. Table
below shows the structure of a scan list.
Table 3-2 Structure of a scan list with four entries
CHANNEL
RANGE
POLARITY
SIGNAL TYPE
108
10
UNIP
SING
101
±5
BIP
NRS
103
±10
BIP
NRS
102
±2.5
BIP
DIFF
To build a scan list
To build a scan list, follow the steps below:
• Use the ROUTe:SCAN command to define the list of
channels in the scan list. To determine what channels are
currently in the scan list, use the ROUTe:SCAN? query
command.
• Use the ROUTe:SCAN command if you wish to overwrite
the initial setting of the scan list.
• To initiate a scan sequence, use either the DIGitize or
RUN command.
To stop a scan initiated by the RUN command, use the STOP
command.
U2300A Series USB DAQ User’s Guide
45
3
Features and Functions
Burst mode
The DAQ device is equipped with BURST mode. This mode
enables the DAQ device to simulate in simultaneous mode. It
would perform sampling measurement in the highest speed
of the product capabilities. The following figure illustrates an
example of burst mode.
Example:
Sampling rate: 1 kSa/s
Number of sampling channels: three
Scan list sequence: 101, 102, 103
Figure 3-2 Burst mode enabled and disabled during data acquisition
46
U2300A Series USB DAQ User’s Guide
Features and Functions
3
A/D data conversion
A/D data conversion converts analog voltage into digital
information. The following section illustrates the format of
acquired raw data for the A/D conversion.
Below is the illustrated example of the acquired raw data
scan list for CH 101, CH 102, and CH 103.
#800000200
Data length indicator, The
next 8 bytes (0000 0200)
specifying the actual data
length only, not actual data.
Data length (200 bytes long)
<byte>
1st data
LSB
<byte>
1st data
MSB
<byte>
1st data
LSB
CH 101
<byte>
1st data
MSB
CH 102
<byte>
1st data
LSB
<byte>
1st data
MSB
CH 103
<byte>
2nd data
LSB
<byte> ...
2nd data ...
MSB
CH 101
...
16-bit Data Format
LSB
DDDD DDDD
MSB
DDDD DDDD
12-bit Data Format
LSB
DDDD XXXX
MSB
DDDD DDDD
D - Data bits
X - Unused bits
Raw data conversion
To convert the data into an actual float number, we need
the voltage range and polarity information. Below are the
calculations on the raw data conversion for both bipolar and
unipolar.
To perform a sample calculation of the conversion, take
the U2356A as an example. The resolution of U2356A is
16 bits and the range is taken as 10 V. The Int16b value
calculated using conversion algorithm is 12768.
U2300A Series USB DAQ User’s Guide
47
3
Features and Functions
Hence, the 16 bits binary read back calculation will be as
follows.
LSB
MSB
<11100000> <00110001>
= 12768
NOTE
The raw data provided by U2300A series DAQ devices is in the byte order
of LSB first.
Bipolar:
2 × Int16 value
Converted value = ⎛ --------------------------------------⎞ × Range
⎝
resolution ⎠
2
2 × 12768
Example of converted value = ⎛ ------------------------⎞ × 10 = 3.896 V
⎝
⎠
16
2
Unipolar:
Int16 value
Converted value = ⎛ ---------------------------- + 0.5⎞ × Range
⎝ resolution
⎠
2
12768
Example of converted value = ⎛ --------------- + 0.5⎞ × 10 = 6.948 V
⎝ 16
⎠
2
NOTE
48
•
The converted value is of float type. As such, you may need to type cast the
Int16 value to float in your programming environment.
•
For the U2331A, there is a need to perform a 4-bit right shift operation. This is
because it is equipped with 12-bit ADC, and the last 4 bits are truncated.
U2300A Series USB DAQ User’s Guide
Features and Functions
3
AI data format
12-bit AI range
The following Table 3- 3 and Table 3- 4 describes the U2331A
ideal transfer characteristics of the bipolar and unipolar
analog input ranges.
NOTE
The AI resolution of the U2331A is 12 bits. The four lowest bits are
truncated. In the tables below, X refers to four unused bits.
Table 3-3 Analog input range and digital code output for bipolar
Description
Full-scale Range (FSR)
Bipolar analog input range
±10 V
±5 V
±2.5 V
Digital code
output
±1.25 V
Least significant bit (LSB)
4.88 mV
2.44 mV
1.22 mV
0.61 mV
FSR–1LSB
9.9951 V
4.9976 V
2.4988 V
1.2494 V
Midscale +1LSB
4.88 mV
2.44 mV
1.22 mV
0.61 mV
001X
0V
0V
0V
0V
000X
Midscale
Midscale –1LSB
–FSR
–4.88 mV –2.44 mV –1.22 mV –0.61 mV
–10 V
–5 V
–2.5 V
–1.25 V
7FFX
FFFX
800X
Table 3-4 Analog input range and digital code output for unipolar
Description
Full-scale Range (FSR)
Least significant bit (LSB)
0 V to 10 V
0 V to +5 V
0 V to +2.5 V
2.44 mV
1.22 mV
0.61 mV
Digital code
output
FSR–1LSB
9.9976 V
4.9988 V
2.9994 V
7FFX
Midscale +1LSB
5.00244 V
2.50122 V
1.25061 V
001X
Midscale
Midscale –1LSB
–FSR
U2300A Series USB DAQ User’s Guide
Unipolar analog input range
5V
2.5 V
1.25 V
000X
4.9976 V
2.4988 V
1.2494 V
FFFX
0V
0V
0V
800X
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3
Features and Functions
16-bit AI range
The following Table 3- 5 and Table 3- 6 describes the ideal
transfer characteristics of bipolar and unipolar input ranges
of the U2351A, U2352A, U2353A, U2354A, U2355A, and
U2356A models.
Table 3-5 Analog input range and digital code output for bipolar
Description
Bipolar analog input range
Full-scale Range (FSR)
Digital code
output
±10 V
±5 V
±2.5 V
±1.25 V
Least significant bit
(LSB)
305.2 µV
152.6 µV
76.3 µV
38.15 µV
FSR–1LSB
9.999695 4.999847 2.499924 1.249962
V
V
V
V
7FFF
Midscale+1LSB
305.2 µV
152.6 µV
76.3 µV
38.15 µV
0001
0V
0V
0V
0V
0000
Midscale–1LSB
–305.2
µV
–152.6
µV
–76.3 µV
–38.15
µV
FFFF
–FSR
–10 V
–5 V
–2.5 V
–1.25 V
8000
Midscale
Table 3-6 Analog input range and digital code output for unipolar
Description
Full-scale Range
(FSR)
Least significant
bit (LSB)
Digital code
output
0 V to 10 V 0 V to +5 V 0 V to +2.5 V 0 V to +1.25 V
152.6 µV
76.3 µV
38.15 µV
19.07 µV
FSR –1LSB
9.999847 V 4.999924 V
2.499962 V
1.249981 V
7FFF
Midscale +1LSB
5.000153 V 2.500076 V
1.250038 V
0.625019 V
0001
1.25 V
0.625 V
0000
1.249962 V
0.624981 V
FFFF
0V
0V
8000
Midscale
Midscale –1LSB
–FSR
50
Unipolar analog input range
5V
2.5 V
4.999847 V 2.499924 V
0V
0V
U2300A Series USB DAQ User’s Guide
Features and Functions
3
Analog Output Operation Mode
There are two D/A channels that are available in the
U2300A series DAQ devices. The two analog outputs are
capable of supplying output voltages in the range of 0 to 10
V and ±10 V (12- bit for U2355A, U2356A, U2331A and 16- bit
for U2351A, U2353A). Each DAC channel drives a maximum
current of 5 mA. The two analog outputs can be used as
voltage sources to your devices under test (DUT). In addition
to this, the analog outputs are also used to output
pre- defined function generators or any arbitrary waveform.
Analog output operation mode consists of voltage output and
continuous output. Continuous output mode is divided into
function generator and arbitrary.
Figure 3-3 Analog output operation mode
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Features and Functions
Table 3-7 Analog output operation overview
Operation
Modes
Analog Output
Single Voltage Output DC Voltage Output
Continuous Output
Types of Output
• Pre-defined Waveform
• Sine wave
• Square wave
• Triangle wave
• Sawtooth wave
• Noise wave
• Arbitrary Wave
Single voltage output mode
The following SCPI commands show the sample output of a
DC voltage level for the specified DA channels.
Example 1, To output a DC voltage via CH 201
-> *RST;*CLS
-> SOUR:VOLT 2.5, (@201)
-> SOUR:VOLT 3.2, (@201)
-> SOUR:VOLT –3.2,
(@201)
-> SOUR:VOLT? (@202)
<- 0
52
// To reset DAQ to default power-on
state, this command can be ignored if
this operation is not required
// Reference is AO_GND
// Changes output from 2.5 VDC to 3.2
VDC
// Changes output from 3.2 VDC to –3.2
VDC
// To query the state of CH 202
// By default, CH 202 is 0 VDC
U2300A Series USB DAQ User’s Guide
Features and Functions
3
Example 2, To output two DC voltages via CH 201 and CH 202
-> *RST;*CLS
// To reset DAQ to default power-on
state, this command can be ignored if
this operation is not required
-> SOUR:VOLT 3.5, (@201) // Set 3.5 VDC output to CH 201
-> SOUR:VOLT 8.1, (@202) // Set 8.1 VDC output to CH 202
Continuous output mode
The continuous output mode consists of function generator
and arbitrary. You can use the following SCPI commands in
arbitrary mode:
DATA[:USER]
APPLy:USER
NOTE
For further information, refer to the Agilent U2300A Series USB Multifunction Data Acquisition Programming Guide.
Example 3, To output a sine wave via CH 201
-> *RST;*CLS
// To reset DAQ to default power-on
state, this command can be ignored
if this operation is not required
-> ROUT:ENAB ON, (@201)
// Enable CH 201
-> APPL:SIN 5, 0, (@201)
// Sine wave with 5 Vp (10 Vpp) and
0 VDC offset
-> SYST:ERR?
// To check for any error, this
command can be ignored if this
operations is not required
<- +0, “No Error”
-> OUTP ON
// Turn on output
-> OUTP:WAV:FREQ? (@201)
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Features and Functions
<- 4000
// Default output waveform is at 4
kHz
-> OUTP OFF
// Turn off output (both CH 201 and
CH 202 at 0 VDC)
-> OUTP:WAV:FREQ 5000
// Change output frequency to 5
kHz
-> OUTP ON
// Turn on output
Example 4, To output a sine wave and square wave via CH 201 and
CH 202 respectively
-> *RST;*CLS
// To reset DAQ to default
power-on state, this command
can be ignored if this operation is
not required
-> ROUT:ENAB ON,(@201,202)
// Enable CH 201 and CH 202
-> APPL:SIN 5, 0, (@201)
// Sine wave with 5 Vp (10 Vpp)
and O VDC offset
-> ROUT:SQU 3, –1, (@202)
// Square wave with 3 Vp (6 Vpp)
and –1 VDC offset
-> OUTP:WAV:FREQ 3500
// Set both channel’s output to
3.5 kHz
-> SYST:ERR?
54
<- +0, “No Error”
// To check for any error, this
command can be ignored if this
operations is not required
-> OUTP ON
// Turn on output
U2300A Series USB DAQ User’s Guide
Features and Functions
3
D/A reference voltage
By default, the internal reference voltage is 10 V. However,
external reference can be supplied through the external
reference input pin (AO_EXT_REF). The range of the DAC
output is directly related to the reference. The analog output
voltage can be generated by multiplying the digital codes
that are updated with the 10 V as internal reference.
Therefore, when 10 V is taken as the internal reference, the
full range would be –10 V to +9.9951 V in bipolar output
mode, while 0 V to 9.9976 V in unipolar output mode.
While using an external reference, the different output
voltage ranges can be achieved by connecting different
reference voltage. For example, if connecting a 5 VDC with
the external reference (AO_EXT_REF), then the range from
–4.9976 V to +5 V in the bipolar output can be achieved. The
tables below illustrates the relationship between digital code
and output voltages.
AO data format
Data format for single channels arbitrary AO (when either
one channel is enabled and USER mode)
#800000200
<byte> <byte> <byte> <byte> <byte> <byte> <byte> <byte> ...
Data length indicator, The next 8 bytes 1st data 1st data 2nd data 2nd data 3rd data 3rd data 4th data 4th data ...
(0000 0200) specifying the actual data
LSB
MSB
LSB
MSB
LSB
MSB
LSB
MSB
length only, not actual data. Data length
...
CH 201/202
CH 201/202
CH 201/202
CH 201/202
(200 bytes long)
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Features and Functions
Data format for two channels arbitrary AO (when two
channels are enabled and USER mode)
#800000200
<byte> <byte> <byte> <byte> <byte> <byte> <byte> <byte> ...
Data length indicator, The next 8 bytes
(0000 0200) specifying the actual data
length only, not actual data. Data
length (200 bytes long)
1st data 1st data 1st data 1st data 2nd data 2nd data 2nd data 2nd data ...
LSB
MSB
LSB
MSB
LSB
MSB
LSB
MSB
CH 201
CH 202
CH 201
CH 202
...
16-bit Data Format
LSB
DDDD DDDD
MSB
DDDD DDDD
12-bit Data Format
LSB
DDDD DDDD
MSB
XXXX DDDD
D - Data bits
X - Unused bits
Table 3-8 Digital code and voltage output table for bipolar setting (U2331A, U2355A and U2356A)
Digital Code (Hex)
Analog Output
Voltage output (with internal reference of +10 V)
0x0FFF
Vref * (2047/2048)
9.9951 V
0x0801
Vref * (1/2048)
0.0048 V
0x0800
0V
0.0000 V
0x07FF
–Vref * (1/2048)
–0.0048 V
0x0000
–Vref
–10.000 V
Table 3-9 Digital code and voltage output table for unipolar setting (U2331A, U2355A and U2356A)
Digital Code (Hex)
Analog Output
Voltage output (with internal reference of +10 V)
0x0FFF
Vref * (4095/4096)
9.9975 V
0x0800
Vref * (2048/4096)
5.000 V
0x0001
Vref * (1/4096)
0.0024 V
0x0000
Vref * (0/4096)
0.000 V
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Table 3-10 Digital code and voltage output table for bipolar setting (U2351A and U2353A)
Digital Code (Hex)
Analog Output
Voltage output (with internal reference of +10 V)
0xFFFF
Vref * (32767/32768)
9.999694 V
0x8001
Vref * (1/32768)
0.000305 V
0x8000
0V
0V
0x7FFF
–Vref * (1/32768)
–0.000305 V
0x0000
–Vref
–10.000 V
Table 3-11 Digital code and voltage output table for unipolar setting (U2351A and U2353A)
Digital Code (Hex)
Analog Output
Voltage output (with internal reference of +10 V)
0xFFFF
Vref * (65535/65536)
9.999847 V
0x8000
Vref * (32768/65536)
5.00000 V
0x0001
Vref * (1/65536)
0.000152 V
0x0000
Vref * (0/65536)
0V
U2300A Series USB DAQ User’s Guide
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Features and Functions
Digital I/O
The U2300A series DAQ provides 24- bit of general- purpose
digital I/O (GPIO), which is TTL compatible.
The 24- bit GPIO are segmented into four channels (CH 501
to 504). Channel 501 and 502 consists of eight data bit while
Channel 503 and 504 consists of four data bit. All four
channels are programmable as input and output. As the
system starts up and reset, all the I/O pins are reset to the
input configuration and in high impedance.
Figure 3-4 General purpose digital I/O of Agilent U2300A series DAQ
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Features and Functions
3
The SCPI programming examples below will help you to
configure the DIO and read a digital channel.
Configure the digital channel as OUTPUT and check the digital
data
Example 1:
->
->
->
<-
CONF:DIG:DIR OUTP,(@501)
SOUR:DIG:DATA 123,(@501)
SOUR:DIG:DATA? (@501)
123
Example 2:
-> CONF:DIG:DIR OUTP,(@502)
// Configure the CH 502 to
digital output state
-> SOUR:DIG:DATA:BIT 1,4,(@502) // To set the data bit 4 digital
output line at channels 502 to
1 instantly
-> SOUR:DIG:DATA:BIT? 4,(@502)
// Query status of bit 4 of CH
502
<- 1
Configure the digital channel to INPUT and read back the value
Example 1:
-> CONF:DIG:DIR INP,(@501) //Configure the CH 501 to digital
output state
-> MEAS:DIG? (@501)
//To read back the digital value at
channel 501
<- 23
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Features and Functions
Example 2:
-> CONF:DIG:DIR INP,(@501)
-> MEAS:DIG:BIT? 3,(@501)
<- 0
NOTE
Input commands are not allow when channel is in Output mode, while output commands are not allow when channel is in Input mode.
Example 3:
-> CONF:DIG:DIR OUTP,(@501,503)
-> CONF:DIG:DIR INP,(@502,504)
-> CONF:DIG:DIR? (@501:504)
<- OUTP,INP,OUTP,INP
-> MEAS:DIG? (@501)
// CH 501 has been
set to output state,
hence, it cannot
perform input activity
<-! VI_ERROR_TMO: A timeout occurred
-> SOUR:DIG:DATA? (@502)
// CH 502 has been
set to input state,
hence, it cannot
perform output
activity
<-! VI_ERROR_TMO: A timeout occurred
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3
General Purpose Digital Counter
The U2300A series DAQ device has two independent 31–bit
up/down counters to measure the input channels, which are
TTL compatible. It has a programmable counter clock up to
12 MHz or clock generation. Refer to Figure 3- 5 for further
illustration.
The counter is designed with the following features:
• Count up/down capability
• Internal/external programmable counter clock source up
to 12 MHz
• Programmable gate selection which can be triggered
internally or externally
• Pre- loaded software initial count for totalizer
• Read- back capability of current count, without affecting
the counting process
This digital counter operates in two modes: totalizer and
measurement modes. In either measurement mode or totalize
mode, the signal source should be connected to the pin
COUNT_GATE. In measurement mode, the signal that goes
through the COUNT_GATE is the signal users wish to
measure. In totalize mode, the signal that goes through the
COUNT_GATE is the signal that enables the counter to start
counting the clock.
Figure 3-5 General purpose digital counter
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3
Features and Functions
Totalizer mode
In totalizer mode, the counter will start counting the number
of pulses generated on COUNT_CLK. This is done after the
GATE is enabled. The totalize count is measured with the
following command:
MEASure:COUNter:TOTalize? (@301)
The example below illustrates the count up mode when the
counter is configured as totalize with initial count set to 0.
COUNT_GATE will enable the counting after the totalize
function has been enabled and the COUNT_OUT pin will
output a series of pulses as shown below.
Figure 3-6 Totalizer mode
NOTE
62
The output pulse width is at 20.8 ns.
U2300A Series USB DAQ User’s Guide
Features and Functions
3
The following SCPI programming example shows how to set
the counter mode.
// Supply the signal to COUNT301_CLK
// Counter mode setting
-> COUN:FUNC TOT,(@301)
// Set as Totalize function
-> COUN:GATE:SOUR INT,(@301)
// Set the GATE source as
internal
-> COUN:CLK:POL AHI,(@301)
// Set the clock polarity as
active high
-> COUN:CLK:SOUR EXT,(@301)
// Set the clock source as
external
-> COUN:TOT:IVAL 100,(@301)
// Initial Count value
-> COUN:TOT:UDOW:DIR UP,(@301)
// Set as Count Upmode
-> COUN:TOT:UDOW:SOUR INT,(@301) // Set the Up/Down source
as internal
-> SOUR:COUN:OUTP:POL AHI,(@301)
-> COUN:TOT:INIT (@301)
// Initiate Totalize
-> MEAS:COUN:TOT? (@301)
// Initial value = 100
<- 100
-> MEAS:COUN:DATA? (@301)
// Return Totalize value
<- 100
-> COUN:GATE:CONT ENAB,(@301)
// Start Counting (for INT
gate only)
-> COUN:GATE:CONT DIS,(@301)
// Stop Counting (for INT
gate only)
-> MEAS:COUN:TOT? (@301)
<- 105
-> MEAS:COUN:DATA? (@301)
<- 105
-> COUN:ABOR (@301)
// Abort all counter
operation
-> COUN:TOT:CLE (@301)
// Clear Count value
-> MEAS:COUN:TOT? (@301)
<- 0
-> MEAS:COUN:DATA? (@301)
<- 0
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Features and Functions
Measurement mode
In the measurement mode, frequency, period and pulse
width are measured. The measurement is gated by either an
internal or external gate source.
The gate source is set using the command below:
SENSe:COUNter:SOURce
Since all three measurements are derived from the same
basic measurement, the measured frequency, period and
pulse width can be easily retrieved from commands below:
MEASure:COUNter:FREQuency? (@<ch_list>)
MEASure:COUNter:PERiod? (@<ch_list>)
MEASure:COUNter:PWIDth? (@<ch_list>)
The return value for frequency, period and pulse width
measurements is a floating value.
NOTE
• The input frequency measurable range is from 0.1 Hz to 6 MHz.
• The pulse width measurement is in the range of 0.167 s to 178.956 s.
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3
The following SCPI programming examples are for frequency,
period and pulse width measurements.
Example 1:
// Supply the signal to COUNT301_GATE
// Counter mode setting
// Take 5.5 kHz with 70% duty cycle square wave as measurement
-> COUN:GATE:SOUR EXT,(@301)
-> COUN:GATE:POL AHI,(@301)
-> COUN:CLK:POL AHI,(@301)
-> COUN:CLK:SOUR INT,(@301)
-> COUN:CLK:INT?
<- 12000 KHz
-> SOUR:COUN:OUTP:POL AHI,(@301)
-> COUN:FUNC FREQ,(@301)
-> MEAS:COUN:DATA? (@301)
// Return value depend on
function set
<- 5.499542
// Frequency in kHz
-> COUN:FUNC PER,(@301)
-> MEAS:COUN:DATA? (@301)
<- 0.1818333
// Period in ms
-> COUN:FUNC PWID,(@301)
-> MEAS:COUN:DATA? (@301)
<- 0.12725
// Pulse width in ms
-> MEAS:COUN:FREQ? (@301)
<- 5.499542
-> COUN:FUNC? (@301)
<- FREQ
// Function automatic set to
FREQ
-> MEAS:COUN:PER? (@301)
<- 0.1818333
-> COUN:FUNC? (@301)
<- PER
// Function automatic set to
PER
-> MEAS:COUN:PWID? (@301)
<- 0.12725
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Features and Functions
-> COUN:FUNC? (@301)
<- PWID
// Function automatic set to
PWID
Example 2:
// Assume 10 MHz external Clock for FREQ,PER,PWID measurement
-> COUN:CLK:SOUR EXT,(@301)
// Must set the external Clock
value (KHz)
-> COUN:CLK:EXT 10000,(@301)
-> COUN:CLK:EXT? (@301)
<- 10000
NOTE
66
Direction of the counter and the initial value of the counter are not
important for this mode.
U2300A Series USB DAQ User’s Guide
Features and Functions
3
Trigger Sources
The Agilent U2300A series USB DAQ devices provides
flexible trigger options for various applications. There are
four types of trigger sources:
•
•
•
•
none (immediate trigger)
digital trigger
analog trigger
star trigger
Users can configure the trigger source for A/D and D/A
operations remotely.
• The D/A and A/D conversions share the same analog trigger.
NOTE
• Star trigger is used when the DAQ is connected into the modular
instrument chassis.
All four types of trigger sources are summarized in the
following tables.
Table 3-12 Trigger type for single-shot acquisition of continuous mode
Trigger Source
Type
Condition
Pin Selection
None (immediate trigger)
• Post
• Delay
N/A
N/A
Digital trigger
•
•
•
•
Positive/Negative
EXTD_AI_TRIG, EXTD_AO_TRIG
Above High/Below Low/Window
EXTA_TRIG, SONE
Analog trigger
Pre
Middle
Post
Delay
Table 3-13 Trigger type for continuous acquisition of continuous mode
Trigger Source
Type
None (immediate trigger)
Digital trigger
• Post
• Delay
Analog trigger
U2300A Series USB DAQ User’s Guide
Condition
Pin Selection
N/A
N/A
Positive/Negative
EXTD_AI_TRIG, EXTD_AO_TRIG
Above High/Below Low/Window
EXTA_TRIG, SONE
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3
Features and Functions
Trigger types
There are four types of trigger, which are pre- trigger,
post- trigger, middle- trigger, and delay- trigger.
Pre-trigger
This trigger type is used when you wish to collect data
before a trigger event. The A/D conversion starts when you
execute the specified function calls and stops when the
trigger event occurs. For example, you specify four sample
points and the analog trigger occurs after four sample points
are converted. Refer to the following figure for further
illustration.
NOTE
Due to memory limitation on hardware, the maximum sample points is
only up to 8 MSa.
Figure 3-7 Pre-trigger
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Middle-trigger
This trigger type is used when you want to collect data
before and after a trigger event. The sampled data are equal
before and after trigger. For example, if the user specify four
sample points, the conversion only begins after the trigger
event occurs. Two sample points before and after the trigger
are taken. Refer to the following figure for further
illustration.
Figure 3-8 Middle-trigger
Post-trigger
The post- trigger is the default setting and used in
applications when you want to collect data after a trigger
event. As illustrated in the following figure, the sample point
are set to two. Total of two sample points are taken after
the trigger starts.
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Features and Functions
Figure 3-9 Post-trigger
Delay-trigger
This trigger acquisition is used in applications if you want to
delay the data collecting process after a specified trigger
event. The delay time is controlled by the value, which is
pre- loaded in the Delay_counter (32- bit). The clock source is
the Timebase clock. When the count reaches zero, the
counter stops and the board start to acquire data. When the
internal 48 MHz is set as Timebase clock, the delay time is
in the range of 20.8 ns to 89.47 s. If the Timebase clock is
from external clock (48 MHz to 1 MHz), the delay time can
be varied by user’s setting.
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Figure 3-10 Delay-trigger
Digital trigger
There are positive and negative conditions in digital trigger.
It is used when a rising or falling edge is detected on the
digital signal. Positive condition is used when it triggers
from low to high, while high to low when the negative
condition is used.
Figure 3-11 Positive and negative edge of digital trigger.
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Features and Functions
Analog trigger
There are three analog trigger conditions in U2300A series
DAQ and the trigger conditions are as follows:
• Above high
• Below low
• Window
It uses two threshold voltages, which are Low- Threshold and
High- Threshold. Users can easily configure the analog trigger
conditions using the Agilent Measurement Manager software.
Above high
The following figure illustrates the above high analog trigger
condition. The trigger signal is generated when the analog
input signal is higher than the High- Threshold voltage. In
this trigger condition, the Low- Threshold voltage is not used.
Figure 3-12 Above high trigger condition
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Below low
In below low trigger condition, the trigger signal is generated
when the analog input signal is lower than the
Low- Threshold voltage. In this trigger condition, the
High- Threshold voltage is not used. The following figure
illustrates the above high analog trigger condition.
Figure 3-13 Below low trigger condition
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Features and Functions
Window
The window trigger condition is shown in the following
diagram. The trigger signal is generated when the input
analog signal falls within the voltage range of the
High- Threshold and Low- Threshold.
Figure 3-14 Window trigger condition
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SCPI Programming Examples
Analog input
Example 1:
// Digital trigger with delay trigger type
// Supply Digital trigger signal to EXTD_AI_TRIG
-> ACQ:POIN 1000
// For “DIG” mode
-> ACQ:SRAT 1000
-> TRIG:SOUR EXTD
// Digital Trigger
-> TRIG:DTRG:POL POS
-> TRIG:TYPE DEL
-> TRIG:DCNT 225000000 // Count value ~= 5 s
-> WAV:STAT?
<- EMPT
-> WAV:COMP?
<- YES
-> DIG
// Start single-shot acquisition
-> WAV:STAT?
<- FRAG
-> WAV:COMP?
// To check acquisition completion for DIG
<- NO
// Wait for trigger
// Five seconds delay after the trigger event
-> WAV:STAT?
<- DATA
-> WAV:COMP?
<- YES
<- WAV:DATA?
<- #800002000
<byte><byte>...
U2300A Series USB DAQ User’s Guide
// Raw data returned by DAQ
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3
Features and Functions
Example 2:
// Digital trigger with Middle trigger type
-> WAV:POIN 1000
// For “RUN” mode
-> ACQ:SRAT 1000
-> TRIG:SOUR EXTD
// Digital Trigger
-> TRIG:DTRG:POL POS
-> TRIG:TYPE MID
-> RUN
Example 3:
// Analog trigger with Pre trigger type
-> ACQ:POIN 1000
// For “DIG” mode
-> ACQ:SRAT 1000
-> ROUT:SCAN (@101)
-> ROUT:CHAN:POL BIP,(@101)
-> TRIG:SOUR EXTA
-> TRIG:ATRG:COND AHIG
-> TRIG:ATRG:HTHR 3
-> TRIG:ATRG:LTHR –3
// Analog trigger
// Above high Threshold condition
// 3 V high Threshold
-> TRIG:TYPE PRE
// –3 V low Threshold
-> DIG
// Pre trigger
// Trigger will happen when signal go above 3 V
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Example 4:
// Analog Trigger with first scan channel as trigger channel (SONE mode)
-> ACQ:POIN 1000
// For “DIG” mode
-> ACQ:SRAT 1000
-> ROUT:SCAN (@133,101)
// Use channel 133 as
trigger channel
-> ROUT:CHAN:POL UNIP,(@133,101)
-> TRIG:SOUR EXTA
-> TRIG:ATRG:SOUR SONE
-> TRIG:ATRG:COND BLOW
// Below Low Threshold
trigger condition
-> TRIG:ATRG:HTHR 6
// 6 V High Threshold
-> TRIG:ATRG:LTHR
// 2 V Low Threshold
-> TRIG:TYPE POST
// Post Trigger
-> DIG
// Trigger will take place when signal fall below 2 V at channel 133
NOTE
Middle-trigger and pre-trigger are not allow in RUN mode, NONE trigger
and SONE trigger.
U2300A Series USB DAQ User’s Guide
77
3
Features and Functions
Analog output
Example 1:
// Digital trigger with delay trigger type
// Supply Digital trigger signal to EXTD_AO_TRIG
-> OUTP:TRIG:SOUR EXTD
-> OUTP:TRIG:DTRG:POL NEG
-> OUTP:TRIG:TYPE DEL
-> OUTP:TRIG:DCNT 225000000 // Count value ~= 5 s
-> ROUT:ENAB ON,(@201)
- > OUTP ON
// Wait for trigger
// Output turn on after 5 s of delay (after trigger happen)
Example 2:
// Analog trigger with POST trigger type
-> OUTP:TRIG:SOUR EXTA
-> OUTP:TRIG:ATRG:COND WIND
// Window trigger condition (–3
V to 3 V)
-> OUTP:TRIG:ATRG:HTHR 3
// 3 V high Threshold
-> OUTP:TRIG:ATRG:LTHR –3
// –3 V low Threshold
-> OUTP:TRIG:TYPE POST
-> ROUT:ENAB ON,(@201)
-> OUTP ON
78
U2300A Series USB DAQ User’s Guide
Features and Functions
3
Example 3:
// Analog Trigger with first scan channel as trigger channel (SONE mode)
-> OUTP:TRIG:SOUR EXTA
-> ROUT:SCAN (@133)
// Use Channel 133 as trigger
channel
-> OUTP:TRIG:ATRG:SOUR SONE // Above High threshold Trigger
condition
-> OUTP:TRIG:ATRG:COND AHIG
-> OUTP:TRIG:ATRG:HTHR 4
// 4 V High Threshold
-> OUTP:TRIG:ATRG:LTHR 1
// 1 V Low Threshold
-> OUTP:TRIG:TYPE POST
-> ROUT:ENAB ON,(@201)
-> RUN
-> OUTP ON
NOTE
// Important!
For SONE mode, execute the RUN/DIG command first before turning on
the output. Channel 133 will only respond to trigger signal during
acquisition.
U2300A Series USB DAQ User’s Guide
79
3
80
Features and Functions
U2300A Series USB DAQ User’s Guide
Agilent U2300A Series Multifunction USB DAQ
User’s Guide
4
Characteristics and Specifications
Product Characteristics 82
Product Specifications 83
Basic multifunction DAQ device specifications 83
High density multifunction DAQ device specifications 87
Electrical Measurement Specifications 91
Basic multifunction USB DAQ device specifications 91
High density multifunction USB DAQ device specifications 93
This chapter specifies the characteristics, environmental
conditions, and specifications of the U2300A DAQ device.
Agilent Technologies
81
4
Characteristics and Specifications
Product Characteristics
REMOTE INTERFACE
• Hi-Speed USB 2.0
• USBTMC Class Device
POWER REQUIREMENT
• +12 VDC (TYPICAL)
• 2 A (MAX) input rated current
• Installation Category II
POWER CONSUMPTION
+12 VDC, 550 mA maximum
OPERATING ENVIRONMENT
•
•
•
•
•
STORAGE COMPLIANCE
–20 °C to 70 °C
SAFETY COMPLIANCE
Certified with:
Operating temperature from 0 °C to +55 °C
Relative humidity at 15% to 85% RH (non-condensing)
Altitude up to 2000 meters
Pollution Degree 2
For indoor use only
• IEC 61010-1:2001/EN 61010-1:2001 (2nd Edition)
• USA: UL61010-1: 2004
• Canada: CSA C22.2 No.61010-1:2004
EMC COMPLIANCE
•
•
•
•
IEC/EN 61326-1 1998
CISPR 11: 1990/EN55011:1991, Class A, Group 1
CANADA: ICES-001: 1998
Australia/New Zealand: AS/NZS 2064.1
SHOCK & VIBRATION
Tested to IEC/EN 60068-2
IO CONNECTOR
68-pin female VHDCI Type
DIMENSION (WxDxH)
Module dimension:
• 120.00 mm x 182.40 mm x 44.00 mm (with plastic casing)
• 105.00 mm x 174.54 mm x 25.00 mm (without plastic casing)
Terminal block dimension:
• 103.00 mm x 85.20 mm x 42.96 mm
WEIGHT
• 565 g (with plastic casing)
• 400 g (without plastic casing)
WARRANTY
Three years
82
U2300A Series USB DAQ User’s Guide
Characteristics and Specifications
4
Product Specifications
Basic multifunction DAQ device specifications
Table 4-1 Analog input product specifications for basic multifunction DAQ device
Analog Input
Model Number
Resolution
Number of channels
Maximum sampling rate
Scan list memory
Programmable bipolar input range
Programmable unipolar input range
Input coupling
Input impedance
Operational common mode voltage range
Overvoltage protection
Trigger sources
Trigger modes
FIFO buffer size
U2300A Series USB DAQ User’s Guide
U2351A
U2352A
U2353A
U2354A
16 bits, no missing codes
16 SE/8 DI (software selectable/channel)
250 kSa/s
500 kSa/s
Up to 100 selectable channels entries
±10 V, ±5 V, ±2.5 V, ±1.25 V
0 to 10 V, 0 to 5 V, 0 to 2.5 V, 0 to 1.25 V
DC
1 GΩ / 100 pF
±7.5 V maximum
Power on: Continuous ±30 V, Power off: Continuous ±15 V
External analog/digital trigger, SSI/star trigger [1]
Pre- trigger, delay-trigger, post-trigger, and middle-trigger
Up to 8 MSa
83
4
Characteristics and Specifications
Table 4-2 Analog output product specifications for basic multifunction DAQ device
Analog Output
Model Number
Resolution
Number of channels
Maximum update rate
Output ranges
Output coupling
Output impedance
Stability
Power-on state
Trigger sources
Trigger modes
FIFO buffer size
Function generation mode
U2351A
16 bits
2
1 MSa/s
0 to 10 V, ±10 V,
0 to AO_EXT_REF,
±AO_EXT_REF [2]
DC
0.1 Ω Typical
Any passive load
up to 1500 pF
0 V steady state
External
analog/digital trigger,
SSI/star trigger [1]
Post-trigger and
delay-trigger
1 channel: Maximum 8 MSa
2 channels: Maximum 4 MSa/ch
Sine-wave, square-wave, triangle,
sawtooth, and noise waveform
U2352A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
U2353A
16 bits
2
1 MSa/s
0 to 10 V, ±10 V,
0 to AO_EXT_REF,
±AO_EXT_REF [2]
DC
0.1 Ω Typical
Any passive load
up to 1500 pF
0 V steady state
External
analog/digital trigger,
SSI/star trigger [1]
Post-trigger and
delay-trigger
1 channel: Maximum 8 MSa
2 channels: Maximum 4 MSa/ch
Sine-wave, square-wave, triangle,
sawtooth, and noise waveform
U2354A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Table 4-3 Digital I/O product specifications for basic multifunction DAQ device
Digital I/O
Model Number
Number of bits
Compatibility
Input voltage
Input voltage range
Output voltage
84
U2351A | U2352A | U2353A | U2354A
24-bit programmable input/output
TTL
VIL = 0.7 V maximum, IIL = 10 µA maximum
VIH = 2.0 V minimum, IIH = 10 µA maximum
–0.5 V to +5.5 V
VOL = 0.45 V maximum, IOL = 8 mA maximum
VOH = 2.4 V minimum, IOH = 400 µA maximum
U2300A Series USB DAQ User’s Guide
Characteristics and Specifications
4
Table 4-4 General purpose digital counter product specifications for basic multifunction DAQ device
General Purpose Digital Counter
Model Number
Maximum count
Number of channels
Compatibility
Clock source
Base clock available
Maximum clock source frequency
Input frequency range
Pulse width measurement range
U2351A | U2352A | U2353A | U2354A
(2³¹–1) bits
Two independent up/down counter
TTL
Internal or external
48 MHz
12 MHz
0.1 Hz to 6 MHz at 50% duty cycle
0.167 µs to 178.956 s
Table 4-5 Analog trigger product specifications for basic multifunction DAQ device
Analog Trigger
Model Number
Trigger source
Trigger level
Trigger conditions
Trigger level resolution
Bandwidth
Input Impedance for EXTA_TRIG
Coupling
Overvoltage Protection
U2351A | U2352A | U2353A | U2354A
All analog input channels, External analog trigger (EXTA_TRIG)
±Full Scale for internal; ±10 V for external
Above high, below low and window (software selectable)
8 bits
400 kHz
20 kΩ
DC
Continuous for ± 35 V maximum
Table 4-6 Digital trigger product specifications for basic multifunction DAQ device
Digital Trigger
Model Number
Compatibility
Response
Pulse width
U2300A Series USB DAQ User’s Guide
U2351A | U2352A | U2353A | U2354A
TTL/CMOS
Rising or falling edge
20 ns minimum
85
4
Characteristics and Specifications
Table 4-7 Calibration product specifications for basic multifunction DAQ device
Calibration [3]
Model Number
On board reference voltage
Temperature drift
Stability
U2351A | U2352A | U2353A | U2354A
5V
±2 ppm/°C
±6 ppm/1000 hours
Table 4-8 General product specifications for basic multifunction DAQ device
General
Model Number
Remote interface
Device class
Programmable interface
U2351A | U2352A | U2353A | U2354A
Hi-Speed USB 2.0
USBTMC Class Device
Standard Commands for Programmable Instruments (SCPI) and IVI-COM
[1] System Synchronous Interface (SSI) and Star-trigger commands are used when
modular devices are used in instrument chassis.
[2] Maximum external reference voltage for analog output (AO_EXT_REF) is ±10 V.
[3] 20 minutes warm-up time is recommended.
86
U2300A Series USB DAQ User’s Guide
Characteristics and Specifications
4
High density multifunction DAQ device specifications
Table 4-9 Analog input product specifications for high density multifunction DAQ device
Analog Input
Model Number
Resolution
Number of channels
Maximum sampling rate
Scan list memory
Programmable bipolar input range
Programmable unipolar input range
Input coupling
Input impedance
Operational common mode voltage range
Overvoltage protection
Trigger sources
Trigger modes
FIFO buffer size
U2300A Series USB DAQ User’s Guide
U2355A
U2356A
U2331A
16 bits, no missing codes
12 bits, no missing codes
64 SE/32 DI (software selectable/channel)
250 kSa/s
500 kSa/s
3 MSa/s (single channel)
1 MSa/s (multi channels)
Up to 100 selectable channels entries
±10 V, ±5 V, ±2.5 V, ±1.25 V
±10 V, ±5 V, ±2.5 V,
±1.25 V, ±1 V, ±0.5 V,
±0.25 V, ±0.2 V, ±0.05 V
0 to 10 V, 0-5 V, 0-2.5 V, 0-1.25 V
0-10 V, 0-5 V, 0-4 V, 0-2.5
V, 0-2 V, 0-1 V, 0-0.5 V,
0-0.4 V, 0-0.1V
DC
1 GΩ / 100 pF
±7.5 V maximum
Power on: Continuous ±30 V, Power off: Continuous ±15 V
External analog/digital trigger, SSI/star trigger [1]
Pre-trigger, delay-trigger, post-trigger and middle-trigger
Up to 8 MSa
87
4
Characteristics and Specifications
Table 4-10 Analog output product specifications for high density multifunction DAQ device
Analog Output
Model Number
Resolution
Number of channels
Maximum update rate
Output ranges
Output coupling
Output impedance
Stability
Power on state
Trigger sources
Trigger modes
FIFO buffer size
Function generation mode
U2355A | U2356A | U2331A
12 bits
2
1 MSa/s
0 to 10 V, ±10 V, 0 to AO_EXT_REF, ±AO_EXT_REF[2]
DC
0.1 Ω Typical
Any passive load up to 1500 pF
0 V steady state
External analog/digital trigger, SSI/star trigger[1]
Post-trigger and delay-trigger
1 channel: Maximum 8 MSa, 2 channels: Maximum 4 MSa/ch
Sine-wave, square-wave, triangle, sawtooth and noise waveform
Table 4-11 Digital I/O product specifications for high density multifunction DAQ device
Digital I/O
Model Number
Number of bits
Compatibility
Input voltage
Input voltage range
Output voltage
88
U2355A | U2356A | U2331A
24-bit programmable input/output
TTL
VIL = 0.7 V max, IIL = 10 µA max
VIH = 2.0 V min, IIH = 10 µA max
–0.5 V to +5.5 V
VOL = 0.45 V max, IOL = 8 mA max
VOH = 2.4 V min, IOH = 400 µA max
U2300A Series USB DAQ User’s Guide
Characteristics and Specifications
4
Table 4-12 General purpose digital counter product specifications for high density multifunction DAQ device
General Purpose Digital Counter
Model Number
Maximum count
Number of channels
Compatibility
Clock source
Base clock available
Maximum clock source frequency
Input frequency range
Pulse width measurement range
U2355A | U2356A | U2331A
(2³¹-1) bits
Two independent up/down counter
TTL
Internal or external
48 MHz
12 MHz
0.1 Hz to 6 MHz at 50% duty cycle
0.167 µs to 178.956 s
Table 4-13 Analog trigger product specifications for high density multifunction DAQ device
Analog trigger
Model Number
Trigger source
Trigger level
Trigger conditions
Trigger level resolution
Bandwidth
Input Impedance for EXTA_TRIG
Coupling
Overvoltage Protection
U2355A | U2356A | U2331A
All analog input channels, External analog trigger (EXTA_TRIG)
±Full Scale for internal; ±10 V for external
Above high, below low and window (software selectable)
8 Bits
400 kHz
20 kΩ
DC
Continuous for ±35 V maximum
Table 4-14 Digital trigger product specifications for high density multifunction DAQ device
Digital Trigger
Model Number
Compatibility
Response
Pulse width
U2300A Series USB DAQ User’s Guide
U2355A | U2356A | U2331A
TTL/CMOS
Rising or falling edge
20 ns minimum
89
4
Characteristics and Specifications
Table 4-15 Calibration product specifications for high density multifunction DAQ device
Calibration [3]
Model Number
On board reference
Temperature drift
Stability
U2355A | U2356A | U2331A
5V
±2 ppm/°C
±6 ppm/1000 hours
Table 4-16 General product specifications for high density multifunction DAQ device
General
Model Number
Remote interface
Device class
Programmable interface
U2355A | U2356A | U2331A
Hi-Speed USB 2.0
USBTMC Class Device
Standard Commands for Programmable Instruments (SCPI) and IVI-COM
[1] System Synchronous Interface (SSI) and Star-trigger commands are used when
modular devices are used in instrument chassis.
[2] Maximum external reference voltage for analog output (AO_EXT_REF) is ±10 V.
[3] 20 minutes warm-up time is recommended.
90
U2300A Series USB DAQ User’s Guide
Characteristics and Specifications
4
Electrical Measurement Specifications
Basic multifunction USB DAQ device specifications
Table 4-17 Analog input electrical measurement specifications for basic multifunction USB DAQ device
Analog Input Measurement [1]
Model Number
U2351A | U2352A
0 °C to 18 °C
23 °C ± 5 °C
28 °C to 45 °C
±1 mV
±5mV
±2 mV
±5mV
760 kHz
Function
Offset Error
Gain Error
–3 dB small signal bandwidth[2]
U2353A | U2354A
0°C to 18°C
23°C ± 5°C
28°C to 45°C
±1 mV
±5mV
±2mV
±5mV
1.5 MHz
300 kHz
1% THD large signal bandwidth[2]
System noise
CMRR
1 mVrms
300 kHz
2 mVrms
1 mVrms
2.5 mVrms
62 dB
88 dB
62 dB
82 dB
Signal-to-noise and distortion ratio (SINAD) [3]
80 dB
78 dB
Total harmonic distortion (THD) [3]
–90 dB
–82 dB
Signal-to-noise ration (SNR) [3]
80 dB
78 dB
13
12.6
Spurious-free dynamic range (SFDR)
[3]
Effective number of bits (ENOB) [3]
Table 4-18 Analog output electrical measurement specifications for basic multifunction USB DAQ device
Analog Output Measurementv[1]
Model Number
Function
Offset Error
Gain Error
Slew rate
Rise time
Fall time
Settling time to 1% output error
Driving capability
Glitch energy
U2300A Series USB DAQ User’s Guide
U2351A | U2353A
23 °C ± 5 °C
±1 mV
±4mV
0 °C to 18 °C
28 °C to 45 °C
±4 mV
±5 mV
19 V/µs
0.9 µs
0.9 µs
4 µs
5 mA
5 ns-V (Typical), 80 ns-V (Maximum)
91
4
Characteristics and Specifications
[1] Specifications are for 20 minutes of warm-up time, calibration temperature at 23 °C
and input range of ±10 V.
[2] Specifications are based on the following test conditions.
Bandwidth Test
•
•
–3 dB small signal
bandwidth
Model Number Test Conditions
(DUT setting at ±10 V bipolar)
U2351A
U2352A
Sampling Rate:
Input voltage:
250 kSa/s
• –3 dB small signal bandwidth 10% FSR
• 1% THD large signal bandwidth FSR –1 dB FS
1% THD large
signal bandwidth
U2353A
U2354A
Sampling Rate:
Input voltage:
500 kSa/s
• –3 dB small signal bandwidth 10% FSR
• 1% THD large signal bandwidth FSR –1 dB FS
[3] Specifications are based on the following test conditions.
Dynamic Range Test
SFDR, THD, SINAD,
SNR, ENOB
92
Model Number Test Conditions
(DUT setting at ±10 V bipolar)
U2351A
U2352A
Sampling Rate:
Fundamental Frequency:
Number of points:
Fundamental input voltage:
250 kSa/s
2.4109 kHz
8192
FSR –1 dB FS
U2353A
U2354A
Sampling Rate:
Fundamental Frequency:
Number of points:
Fundamental input voltage:
500 kSa/s
4.974 kHz
16384
FSR –1 dB FS
U2300A Series USB DAQ User’s Guide
Characteristics and Specifications
4
High density multifunction USB DAQ device specifications
Table 4-19 Analog input electrical measurement specifications for high density multifunction USB DAQ device
Analog Input Measurement [1]
Model Number
Function
Offset Error
Gain Error
–3 dB small signal bandwidth[2]
1% THD large signal bandwidth[2]
System noise
CMRR
Spurious-free dynamic range
(SFDR)[3]
Signal-to-noise and distortion
ratio (SINAD)[3]
U2355A | U2356A
U2331A
0 °C - 18 °C
0 °C to 18 °C
0 °C to 18 °C
23 °C ± 5 °C 28 °C - 45 °C 23 °C ± 5 °C 28 °C to 45 °C 23 °C ± 5 °C 28 °C to 45 °C
±1 mV
±2mV
±1 mV
±2mV
±2mV
±3mV
±2 mV
±3mV
±2mV
±6mV
±6mV
±7.5mV
760 kHz
1.3 MHz
1.2 MHz
400 kHz
1 mVrms
2 mVrms
64 dB
88 dB
400 kHz
1 mVrms
N/A
4 mVrms
61 dB
86 dB
3 mVrms
5 mVrms
62 dB
71 dB
80 dB
78 dB
72 dB
Total harmonic distortion (THD)[3]
–90 dB
–84 dB
–76 dB
Signal-to-noise ration (SNR)[3]
80 dB
78 dB
72 dB
13
12.6
11.6
Effective number of bits
(ENOB)[3]
Table 4-20 Analog output electrical measurement specifications for high density multifunction USB DAQ device
Analog Output Measurement [1]
Model Number
Function
Offset Error
Gain Error
Slew rate
Rise time
Fall time
Settling time to 1% output error
Driving capability
Glitch energy
U2355A | U2356A
0 °C to 18 °C
28 °C to 45 °C
23 °C ± 5 °C
±1 mV
±4 mV
±4 mV
±5 mV
19 V/µs
0.9 µs
0.9 µs
4 µs
5 mA
5 ns-V (Typical),
80 ns-V (Maximum)
U2300A Series USB DAQ User’s Guide
U2331A
23 °C ± 5 °C
±1.5 mV
±4 mV
0 °C to 18 °C
28 °C to 45 °C
±3mV
±5 mV
19 V/µs
0.9 µs
0.9 µs
4 µs
5 mA
5 ns-V (Typical),
80 ns-V (Maximum)
93
4
Characteristics and Specifications
[1] Specifications are for 20 minutes of warm-up time, calibration temperature at 23 °C
and input range of ±10 V.
[2] Specifications are based on the following test conditions.
Dynamic Range
Test
•
•
–3 dB small signal
bandwidth
Model Number Test Conditions
(DUT setting at ±10 V bipolar)
U2355A
Sampling Rate:
Input voltage:
250 kSa/s
• –3 dB small signal bandwidth 10% FSR
• 1% THD large signal bandwidth FSR –1 dB FS
1% THD large
signal bandwidth
U2356A
Sampling Rate:
Input voltage:
500 kSa/s
• –3 dB small signal bandwidth 10% FSR
• 1% THD large signal bandwidth FSR –1 dB FS
U2331A
Sampling Rate:
Input voltage:
3 MSa/s
• –3 dB small signal bandwidth 10% FSR
• 1% THD large signal bandwidth FSR –1 dB FS
[3] Specifications are based on the following test conditions.
Dynamic Range Test
SFDR, THD, SINAD,
SNR, ENOB
94
Model Number Test Conditions
(DUT setting at ±10 V bipolar)
U2355A
Sampling Rate:
Fundamental Frequency:
Number of points:
Fundamental input voltage:
250 kSa/s
2.4109 kHz
8192
FSR –1 dB FS
U2356A
Sampling Rate:
Fundamental Frequency:
Number of points:
Fundamental input voltage:
500 kSa/s
4.974 kHz
16384
FSR –1 dB FS
U2331A
Sampling Rate:
Fundamental Frequency:
Number of points:
Fundamental input voltage:
3 MSa/s
29.892 kHz
65536
FSR –1 dB FS
U2300A Series USB DAQ User’s Guide
Agilent U2300A Series USB Multifunction DAQ
User’s Guide
5
Calibration
Self-Calibration 96
This chapter introduces the procedures to perform
calibration process to the U2300A series DAQ devices to
minimize A/D measurement errors and D/A output errors.
Agilent Technologies
95
5
Calibration
Self-Calibration
The Agilent U2300A series USB data acquisition devices are
factory- calibrated before shipment. The on- board reference voltage
are calibrated and measured to ensure measurement accuracy. The
device includes a self- calibration function to ensure accuracy of
the measurement made under different environment usage.
For self- calibration, executing the calibration command will initiate
a voltage adjustment in sequence for the specified DAC channel.
This sequence sets a zero and gain adjustment constant for each
DAC output.
Self- calibration can be initiated using the following SCPI command:
CALibration:BEGin
The functions of the DAQ will be halted until the self- calibration
process is completed. You can query the status of calibration
through the following SCPI command:
*OPC?
WA R N I N G
• Unplug all cables that are connected to the DAQ device before
performing self-calibration.
• Any cables connected to the DAQ device will cause the failure of the
self-calibration process.
NOTE
96
It is recommended that the DAQ device is powered-up at least 20 minutes
before performing self-calibration.
U2300A Series DAQ User’s Guide
www.agilent.com
Contact us
To obtain service, warranty or technical
support assistance, contact us at the following
phone numbers:
United States:
(tel) 800 829 4444 (fax) 800 829 4433
Canada:
(tel) 877 894 4414 (fax) 800 746 4866
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(tel) 800 810 0189 (fax) 800 820 2816
Europe:
(tel) 31 20 547 2111
Japan:
(tel) (81) 426 56 7832 (fax) (81) 426 56
7840
Korea:
(tel) (080) 769 0800 (fax) (080) 769 0900
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(tel) (305) 269 7500
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Other Asia Pacific Countries:
(tel) (65) 6375 8100 (fax) (65) 6755 0042
Or visit Agilent World Wide Web at:
www.agilent.com/find/assist
Product specifications and descriptions in
this document are subject to change without
notice.
© Agilent Technologies, Inc., 2006–2009
Printed in Malaysia
Fourth Edition, 1 September 2009
U2351-90002
Agilent Technologies
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