Agilent Technologies U2781A User Manual
Agilent U2781A
USB Modular
Instrument Chassis
User’s Guide
Agilent Technologies
Notices
CAUTION
WARNING
© Agilent Technologies, Inc. 2006 - 2011
No p art o f this manu al may be re produce d 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.
Manual Part Number
U2781-90003
Edition
Fifth Edition, November 8, 2011
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.
Warranty
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.
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).
Safety Notices
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. If the equipment is used in a
manner not specified by the
manufaturer, the protection
provided by the equipment may be
impaired.
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.
II U2781A 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 that precautions must be 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 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.
ICES/NMB-001
This ISM device complies with the Canadian ICES-001.
U2781A User’s Guide III
General Safety Information
WARNING
CAUTION
• 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.
• 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.
IV U2781A 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.
U2781A User’s Guide V
In This Guide…
1Getting Started provides an overview of the U2781A USB modular instrument
chassis, the product outlook and dimension. This chapter also contains
instructions on how to get started with the U2781A USB modular chassis.
2 Features and Functions provides information for better understanding of the
features and functions of the U2781A USB modular instrument chassis.
3 Characteristics and Specifications specifies the characteristics, environment
conditions, and specifications of the U2781A USB modular instrument chassis.
VI U2781A User’s Guide
DECLARATION OF CONFORMITY
According to ISO/IEC Guide 22 and CEN/CENELEC EN 45014
Generic example
Manufacturer’s Name:
Agilent Technologies Microwave Products (M) Sdn. Bhd
Manufacturer’s Address:
Bayan Lepas Free Industrial Zone,
11900, Bayan Lepas, Penang, Malaysia
Declares under sole responsibility that the product as originally delivered
Product Name:
USB Modular Instrument Chassis (USB Card cage)
Models Number:
U2781A
Product Options:
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
StandardStandard
Standard Limit
LimitLimit
Limit
IEC 61326-1:1997+A1:1998 / EN 61326-1:1997+A1:1998
CISPR 11:1990 / EN55011:1991 Class A Group 1
IEC 61000-4-2:1995+A1:1998 / EN 61000-4-2:1995 4 kV CD, 8 kV AD
IEC 61000-4-3:1995 / EN 61000-4-3:1995 3 V/m, 80-1000 MHz
IEC 61000-4-4:1995 / EN 61000-4-4:1995 0.5 kV signal lines, 1 kV power lines
IEC 61000-4-5:1995 / EN 61000-4-5:1995 0.5 kV line-line, 1 kV line-ground
IEC 61000-4-6:1996 / EN 61000-4-6:1996 3 V, 0.15-80 MHz
IEC 61000-4-11:1994 / EN 61000-4-11:1994 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
Supplementary Information:
U2781A is USB Modular Instrument chassis with 6 USB modules slot.
This DoC applies to above-listed products placed on the EU market after:
19-Dec-2006
Date
Mack Soh
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 U2781A Rev 1.0
U2781A User’s Guide VII
Product Regulations
Performance Criteria
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 CD, 8kV AD)
B
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, 1kV line-earth)
B
IEC 61000-4-5:1995 / EN 61000-4-5:1995
(Surge 0.5kV line-line, 1kV line-earth)
B
IEC 61000-4-6:1996 / EN 61000-4-6:1996
(3V, 0.15~80 MHz, 80% AM, power line)
A
IEC 61000-4-11:1994 / EN 61000-4-11:1994
(Dips 1 cycle, 100%)
C
Canada: ICES-001:1998
Australia/New Zealand: AS/NZS 2064.1
EMC
IEC 61010-1:2001 / EN 61010-1:2001
Canada: CSA C22.2 No. 61010-1:2004
Safety
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
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 U2781A User’s Guide
Contents
Contents
1 Getting Started
Introduction 2
Product Overview 3
Product Outlook 3
Dimensions 4
Standard Purchase Items Checklist 5
Installations and Configurations 6
General Maintenance 7
2 Features and Functions
Introduction 10
USB Backplane 11
Trig ge r Bu s (T R IG [0. .7] ) 13
External Trigger Out 14
External Trigger In (Star Trigger) 15
Simultaneous Synchronization (SSI) 16
Single Master–multiple Slaves 18
Multiple Master–multiple Slaves 21
System Reference Clock 23
Chassis Temperature Monitoring 24
Fan Speed Monitoring 25
Identifying Modules Location 26
Geographical Address 26
Modules Identification 26
3 Characteristics and Specifications
Product Characteristics 30
Electrical Specifications 32
Mechanical Specifications 33
U2781A User’s Guide IX
Contents
List of Figures
Figure 2-1 USB backplane block diagram 12
Figure 2-2 Block diagram of Trigger Bus (TRIG [0..7]) and Trigger Out 13
Figure 2-3 Block diagram of the 10 Mhz Reference Clock and External Trigger
In 15
Figure 2-4 Synchronization between modules in the chassis 17
Figure 2-5 Single Master–multiple Slave triggering with DAQ 18
Figure 2-6 Single Master–multiple Slave triggering 19
X U2781A User’s Guide
Figure 2-7 Multiple Master–multiple Slave triggering 21
Figure 2-8 Block diagram of temperature monitoring and fan control 24
Figure 2-9 Identifying modules location 27
Contents
U2781A User’s Guide XI
Contents
List of Tables
Ta b l e 2 - 1 Pin information of SSI connector 11
Ta b l e 2 - 2 Trigger out bits for U2300A, U2500A, and U2600A Series DAQ
devices 14
Ta b l e 2 - 3 Example of configurations for single Master-multiple Slaves using
DAQ and U2700A Series modular products. 20
Ta b l e 2 - 4 Example of configurations for multiple Master–multiple Slaves 22
XII U2781A User’s Guide
Agilent U2781A USB Modular Instrument Chassis
User’s Guide
1 Getting Started
Introduction 2
Product Overview 3
Product Outlook 3
Dimensions 4
Standard Purchase Items Checklist 5
Installations and Configurations 6
General Maintenance 7
This chapter provides an overview of the U2781A USB modular instrument
chassis, the product outlook and dimension. This chapter also contains
instructions on how to get started with the chassis from the installation of
modules to the chassis to the installations of hardware and software to
the start-up and configurations of Agilent Measurement Manager
application software.
Agilent Technologies
1
1Getting Started
Introduction
The U2781A USB modular instrument chassis is a 4U height
chassis with six USB module slots. It is a portable chassis with
high performance added value. It targets a wide range of
applications in both industrial and scientific environments. It helps
to lower cost of test and accelerate your test system integration
and development.
The Agilent U2781A is equipped with USB plug- and- play
connectivity. The USB interface that is compliant with the
TMC- 488.2 Standards work seamlessly with Agilent Measurement
Manager software and can be controlled remotely via industry
standard SCPI commands. In addition, the U2781A modular
instrument chassis comes with Agilent IO Libraries Suite 14.2.
The U2781A modular instrument chassis comes with star trigger
bus, which offers precise synchronization between USB modules
and the external trigger signal. The star trigger bus is a dedicated
trigger lines between the external trigger input and USB slots.
The Agilent U2781A USB modular instrument chassis can be
applied to nearly any industrial data acquisition, industrial
automation and education environment. The primary advantage is
its synchronization capability between modules.
2 U2781A User’s Guide
Product Overview
Module
L-Mount Kit
ON/OFF
switch
Bumper
Trigger In
USB Port
Trigger Out
Ext 10 MHz
AC Input
Product Outlook
Getting Started 1
Front View
U2781A User’s Guide 3
Rear View
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