Agilent Technologies U2751A User Manual

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Agilent U2751A USB

Modular Switch Matrix

User’s and Service Guide

Agilent Technologies

Notices

® Agilent Technologies, Inc. , 2008, 2010

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.

Manual Part Number

U2751-90011

Edition

Second Edition, April 12, 2010

Agilent Technologies, Inc.

3501 Stevens Creek Blvd.

Santa Clara, CA 95052 USA

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

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.

WARNING

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	U2751A User’s and Service Guide

Safety Symbols

The following symbols on the instrument and in the documentation indicate precautions which must be taken to maintain safe operation of the instrument.

Direct current (DC)		Off (supply)

Alternating current (AC)		On (supply)

Both direct and alternating current		Caution, risk of electric shock

Three-phase alternating current		Caution, risk of danger (refer to this
		manual for specific Warning or Caution
		information)

Earth (ground) terminal		Caution, hot surface

Protective conductor terminal		Out position of a bi-stable push control

Frame or chassis terminal		In position of a bi-stable push control

Equipotentiality	CAT I	Measurements performed on circuits
		not directly connected to MAINS

Equipment protected throughout by
double insulation or reinforced
insulation

U2751A User’s and Service Guide

III

General Safety Information

WARNING

• Do not operate the device around explosive gas, vapor, or dust.

• Observe all markings on the device before establishing any connection.

• The device is under CAT I measurement category, do not connect the 25-pin connector to MAINS.

CAT I:

Maximum working voltage:

Standalone 35 Vrms

Modular (Used with U2781A) 180 Vrms

Maximum transient voltage: 300 Vrms

•Do not measure higher than the rated voltage (as marked on the device).

•Do not operate the device with the cover removed or loosened.

•Use only the power adapter provided by the manufacturer to avoid any unexpected hazards.

	CAUTION	• Electrostatic discharge (ESD) can cause damage to the components in
	CAUTION	the instrument and accessories. The cables or wires should be

		connected to the plug-in connectors first and covered with the wire
		casing prior to plugging it into the output connector to prevent ESD
		from occurring.
		• If the device is used in a manner not specified by the manufacturer, the
		device protection 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	U2751A User’s and Service Guide

Environmental Conditions

This instrument is designed for indoor use and in an area with low condensation. The table below shows the general environmental requirements for this instrument.

Environmental conditions	Requirements

Operating temperature	0 °C to 50 °C
Operating humidity	20% to 85% RH non-condensing
Storage temperature	–20 °C to 70 °C
Storage humidity	5% to 90% RH non-condensing

CAUTION

The U2751A USB modular switch matrix complies with the following safety and EMC requirements.

•IEC 61010-1:2001/EN61010-1:2001 (2nd Edition)

•Canada: CAN/CSA-C22.2 No. 61010-1-04

•USA: ANSI/UL 61010-1:2004

•IEC 61326-2002/EN 61326:1997+A1:1998+A2:2001+A3:2003

•Canada: ICES-001:2004

•Australia/New Zealand: AS/NZS CISPR11:2004

U2751A User’s and Service Guide

Regulatory Markings

	The CE mark is a registered trademark		The C-tick mark is a registered
	of the European Community. This CE		trademark of the Spectrum
	mark shows that the product complies		Management Agency of Australia.
	with all the relevant European Legal		This signifies compliance with
	Directives.		the Australia EMC Framework
			regulations under the terms of the
			Radio Communication Act of 1992.

	ICES/NMB-001 indicates that this		This instrument complies with the
	ISM device complies with the		WEEE Directive (2002/96/EC)
	Canadian ICES-001.		marking requirement. This affixed
	Cet appareil ISM est confomre a la		product label indicates that you must
	norme NMB-001 du Canada.		not discard this electrical/electronic
			product in domestic household waste.

	The CSA mark is a registered
	trademark of the Canadian Standards
	Association.

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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 as shown below.

Do not dispose in domestic household waste

To return this unwanted instrument, contact your nearest Agilent

Technologies, or visit:

www.agilent.com/environment/product

for more information.

U2751A User’s and Service Guide

VII

In This Guide…

1Getting Started

This chapter provides an overview of the U2751A USB modular switch matrix, which includes the product outlook, product dimensions, and product layout. This chapter also contains instructions on how to install and configure the U2751A.

2Operation and Features

This chapter describes the operation and features that are offered by the U2751A, such as switch controls and relay usage monitoring.

3Characteristics and Specifications

This chapter contains the characteristics and specifications of the U2751A.

4Service Information

This chapter provides the guidelines for returning the U2751A to Agilent Technologies for servicing or for servicing it yourself. It also contains the list of replaceable parts.

VIII	U2751A User’s and Service Guide

U2751A User’s and Service Guide

Declaration of Conformity (DoC)

The Declaration of Conformity (DoC) for this instrument is available on the Web site. You can search the DoC by its product model or description.

http://regulations.corporate.agilent.com/DoC/search.htm

NOTE

If you are unable to search for the respective DoC, please contact your local Agilent representative.

X	U2751A User’s and Service Guide

List of Figures	XIII
List of Tables	XV
1 Getting Started	1
Introduction 2
Product at a Glance		3
Product Outlook		3
Product Dimensions		5
Dimensions Without Bumpers					5
Dimensions With Bumpers				6
Standard Purchase Items			7
Inspection and Maintenance				8
Initial Inspection		8
Electrical Check		8
General Maintenance			8
Installation and Configuration				9
Installation	9
A. Check Your System			10
B. Install the IO Libraries Suite					11
C. Install the Module Driver				12
D. Install the Agilent Measurement Manager						13
E. Connect the Module to Your PC					15
F. Verify Your Module Connection					20
G. Launch Your Agilent Measurement Manager						21
U2751A DSub Connector				23

U2751A User’s and Service Guide

Contents

	U2922A Terminal Block				24
	U2922A Terminal Block Installation					27
	55-Pin Backplane Connector Pin Configuration 29
	Chassis Installation			30
2	Operation and Features			31
	Power Up	32
	Switch Control 33
	Relay Cycle Counter		36
	System-Related Operation				37
	Self-Test	37
	Error Conditions		37
	SCPI Commands for System-Related Tasks 38
3	Characteristics and Specifications					39
	Product Characteristics			40
	Product Specifications			41
4	Service Information		43
	Checking Defective Relay(s)				44
	Replaceable Parts		45
	Disassembly Instructions				46
	Reassembly Instructions				48
	Contacting Agilent Technologies					48

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List of Figures

Figure 1-1. 25-pin male DSub connector 23

Figure 1-2. U2922A pin configuration		24
Figure 1-3. U2922A outlook 25
Figure 1-4. U2922A dimensions 26
Figure 1-5. 55-pin backplane connector pin configuration 29
Figure 2-1.	Switch matrix concept	33
Figure 2-2.	Panel view of the Agilent Measurement Manager 34
Figure 2-3.	Panel view of the relay cycle counter 36
Figure 4-4.	Defective relay(s) check	44

U2751A User’s and Service Guide

XIII

XIV	U2751A User’s and Service Guide

List of Tables

Table 1-1. Pin assignments 23

Table 1-2. Synchronous Simultaneous Interface (SSI) connector pin description 29

Table 3-3.	Electrical and mechanical specifications update per
attached data sheet 41
Table 3-1.	Electrical and mechanical specifications update per
attached data sheet (continued) 42
Table 4-2.	Part number and description of replaceable part 45

U2751A User’s and Service Guide

XVI	U2751A User’s and Service Guide

U2751A USB Modular Switch Matrix

User’s and Service Guide

Getting Started

Introduction 2
Product at a Glance	3
Product Outlook	3
Product Dimensions	5
Dimensions Without Bumpers				5
Dimensions With Bumpers			6
Standard Purchase Items		7
Inspection and Maintenance			8
Initial Inspection	8
Electrical Check	8
General Maintenance		8
Installation and Configuration			9
Installation 9
A. Check Your System		10
B. Install the IO Libraries Suite				11
C. Install the Module Driver			12
D. Install the Agilent Measurement Manager						13
E. Connect the Module to Your PC					15
F. Verify Your Module Connection					20
G. Launch Your Agilent Measurement Manager						21
U2751A DSub Connector 23
U2922A Terminal Block		24
U2922A Terminal Block Installation					27
55-Pin Backplane Connector Pin Configuration						29
Chassis Installation 30

Agilent Technologies

1 Getting Started

Introduction

The U2751A USB modular switch matrix offers a high quality, low cost switching solution for automated test. It can operate as a standalone or modular unit when used with the U2781A USB modular instrument chassis.

The U2751A is a compact 4 8, two-wire modular switch matrix which is controlled remotely over a USB interface via the Agilent Measurement Manager software. The U2751A can also be programmed using the provided drivers or via SCPI commands.

The U2751A has the following features.

•32 two-wire cross-points organized in a 4 rows by 8 columns configuration

•any combination of rows and columns can be connected at a time. Multiple channels can be closed at the same time

•relay cycle counter

The U2751A offers you the most flexible connection path between your device under test (DUT) and your test equipment, allowing different instruments to be connected to multiple points on your DUT at the same time.

Using the Agilent Measurement Manager, you can instruct the matrix to make or break any of the 32 row-column intersections over the USB interface. More details will be covered in the Agilent Measurement Manager help file.

2	U2751A User’s and Service Guide

Getting Started

Product at a Glance

Product Outlook

Top View

Bumpers

U2751A User’s and Service Guide

1 Getting Started

Front View

USB indicator

Power indicator

DSub connector

Rear View

55-pin backplane connector

USB inlet

Fastening hole for USB cable with locking mechanism

Power inlet

4	U2751A User’s and Service Guide

Getting Started

Product Dimensions

Dimensions Without Bumpers

Top View

105.00 mm

175.00 mm

Front View

25.00 mm

U2751A User’s and Service Guide

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