Agilent Technologies U4154A Manual de usuario

Agilent Technologies

Agilent U4154A Logic

Analyzer

Service Guide

Notices

No part of this manual may be reproduced

in any form or by any means (including

electronic storage and retrieval or transla-

tion into a foreign language) without prior

agreement and written consent from Agi-

lent Technologies, Inc. as governed by

United States and international copyright

laws.

Manual Part Number

U4154-97005

Edition

Fourth edition, February 2013

Available in electronic format only

Agilent Technologies, Inc.

1900 Garden of the Gods Road

Colorado Springs, CO 80907 USA

Warranty

The material contained in this docu-

ment is provided “as is,” and is sub-

ject to being changed, without notice,

in future editions. Further, to the max-

imum 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 par-

ticular purpose. Agilent shall not be

liable for errors or for incidental or

consequential damages in connection

with the furnishing, use, or perfor-

mance 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 sep-

arate 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

If software is for use in the performance of

a U.S. Government prime contract or sub-

contract, Software is delivered and

licensed as “Commercial computer soft-

ware” as defined in DFAR 252.227-7014

(June 1995), or as a “commercial item” as

defined in FAR 2.101(a) or as “Restricted

computer software” as defined in FAR

52.227-19 (June 1987) or any equivalent

agency regulation or contract clause. Use,

duplication or disclosure of Software is

subject to Agilent Technologies’ standard

commercial license terms, and non-DOD

Departments and Agencies of the U.S. Gov-

ernment will receive no greater than

Restricted Rights as defined in FAR

52.227-19(c)(1-2) (June 1987). U.S. Govern-

ment users will receive no greater than

Limited Rights as defined in FAR 52.227-14

(June 1987) or DFAR 252.227-7015 (b)(2)

(November 1995), as applicable in any

technical data.

Safety Notices

CAUTION

A CAUTION notice denotes a haz-

ard. It calls attention to an operat-

ing 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 per-

formed or adhered to, could result

in personal injury or death. Do not

proceed beyond a WARNING

notice until the indicated condi-

tions are fully understood and met.

2U4154A Logic Analyzer Service Guide

Trademark Acknowledgements

Windows and MS Windows are U.S. regis-

tered trademarks of Microsoft Corporation.

Windows XP is a U.S. registered trademark

of Microsoft Corporation.

U4154A Logic Analyzer Service Guide 3

Additional Safety Notices

This apparatus has been designed and tested in accordance with IEC Publication 1010,

Safety Requirements for Measuring Apparatus, and has been supplied in a safe condition.

This is a Safety Class I instrument (provided with terminal for protective earthing). Before

applying power, verify that the correct safety precautions are taken (see the following

warnings). In addition, note the external markings on the instrument that are described

under "Safety Symbols."

Warnings

•Before turning on the instrument, you must connect the protective earth terminal of the

instrument to the protective conductor of the (mains) power cord. The mains plug shall

only be inserted in a socket outlet provided with a protective earth contact. You must

not negate the protective action by using an extension cord (power cable) without a

protective conductor (grounding). Grounding one conductor of a two-conductor outlet

is not sufficient protection.

•Only fuses with the required rated current, voltage, and specified type (normal blow,

time delay, etc.) should be used. Do not use repaired fuses or short-circuited

fuseholders. To do so could cause a shock or fire hazard.

•If you energize this instrument by an auto transformer (for voltage reduction or mains

isolation), the common terminal must be connected to the earth terminal of the power

source.

•Whenever it is likely that the ground protection is impaired, you must make the

instrument inoperative and secure it against any unintended operation.

•Service instructions are for trained service personnel. To avoid dangerous electric

shock, do not perform any service unless qualified to do so. Do not attempt internal

service or adjustment unless another person, capable of rendering first aid and

resuscitation, is present.

•Do not install substitute parts or perform any unauthorized modification to the

instrument.

•Capacitors inside the instrument may retain a charge even if the instrument is

disconnected from its source of supply.

•Do not operate the instrument in the presence of flammable gasses or fumes.

Operation of any electrical instrument in such an environment constitutes a definite

safety hazard.

•Do not use the instrument in a manner not specified by the manufacturer.

To clean the instrument

If the instrument requires cleaning: (1) Remove power from the instrument. (2) Clean the

external surfaces of the instrument with a soft cloth dampened with a mixture of mild

detergent and water. (3) Make sure that the instrument is completely dry before reconnect-

ing it to a power source.

Safety Symbols

Instruction manual symbol: the product is marked with this symbol when it is

necessary for you to refer to the instruction manual in order to protect against

damage to the product.

Hazardous voltage symbol.

Earth terminal symbol: Used to indicate a circuit common connected to grounded

chassis.

4U4154A Logic Analyzer Service Guide

Agilent U4154A Logic Analyzer - At a Glance

The U4154A logic analyzer module is a 136 channel state

and timing analyzer that provides 2.5 Gb/s state logic

analysis and up to 5.0 GHz timing analysis. The U4154A has

2 M to 200 M sample memory depth (depending on the

option chosen).

The U4154A logic analyzer module uses 4 pod cables. Each

of these pod cables has 2 90- pin probe connector pods

making it a total of eight pods per U4154A module. Each of

these pods contain 17 channels, out of which 16 are data

channels and 1 channel is bonus bit or clock channel.

Features

Some of the main features of the U4154A are as follows:

•136 channels per module

•Expandable to 272 channels (as a 2- card set in the AXIe

chassis).

•2.5 Gb/s maximum state acquisition speed.

•“Eye scan” feature.

•A state sampling clock with four qualifiers.

•2.5 GHz timing analysis on all channels and 5.0 GHz

timing analysis in the half channel timing mode.

Service Strategy

The service strategy for this module is the replacement of

defective module/parts. This service guide contains

information for finding a defective assembly by testing and

servicing the U4154A logic analyzer module.

The modules can be returned to Agilent Technologies for all

service work, including troubleshooting. Contact your nearest

Agilent Technologies Sales Office for more details.

Contacting Agilent Technologies

To locate a sales or service office near you, go to

www.agilent.com/find/contactus.

U4154A Logic Analyzer Service Guide 5

Application

This service guide applies to U4154A logic analyzer modules

installed in a M9502A or M9505A AXIe chassis.

U4154A Logic Analyzer Module

The following figure displays the M9502A (2- slot) AXIe

chassis and M9505A 5- slot AXIe chassis.

M9502A and M9505A AXIe Chassis

6U4154A Logic Analyzer Service Guide

In This Service Guide

This book is the service guide for the U4154A logic analyzer

module.

This service guide has five chapters.

Chapter 1, “General Information” contains information about

the module, lists accessories for the module, gives

specifications and characteristics of the module, and

provides a list of the equipment required for servicing the

module.

Chapter 2, “Preparing for Troubleshooting or Performance

Testing” tells how to prepare the module for use.

Chapter 3, “Testing U4154A Performance” tells how to verify

the U4154A performance with specifications.

Chapter 4, “Calibrating” contains calibration instructions for

the module (if required).

Chapter 5, “Troubleshooting” contains explanations of

self- tests and flowcharts for troubleshooting the module.

Chapter 6, “Returning and Replacing a U4154A Module or its

cables” explains how to replace the module, its circuit board

and cables and how to return these to Agilent Technologies.

U4154A Logic Analyzer Service Guide 7

Contents

Agilent U4154A Logic Analyzer - At a Glance 4

In This Service Guide 6

1 General Information

Accessories 12

Probing Accessories 12

U4201A Pod Connector Cables 12

Chassis and software 12

Specifications 13

Characteristics 14

Environmental Characteristics 15

2 Preparing for Troubleshooting or Performance Testing

To set up the U4154A module 18

To test the U4154A module 19

To clean the module 19

3 Testing U4154A Performance

Perform the Self-Tests 24

Equipment Required for the Performance Test 25

Assemble the SMA/Flying Lead Test Connectors 26

Set Up the Test Equipment 31

Connect the Test Equipment 35

Connect the U4154A Logic Analyzer Pod to the Pulse Generator 35

Connect the Pulse Generator Output to the Oscilloscope 37

Verify and adjust the pulse generator DC offset 38

Deskew the oscilloscope 39

8U4154A Logic Analyzer Service Guide

Contents

Test the U4154A Module 40

Configure the Logic Analysis System 41

Determine maximum clock rate 46

Adjust sampling positions using Eye Scan 48

Re-align a stray channel 52

Test Pod 1 54

Tes t P od 2 58

Tes t P ods 3 60

Performance Test Record 62

4 Calibrating

Calibration Strategy 66

5 Troubleshooting

To use the flowcharts 68

Self-Test Descriptions 70

PC Board Revision Test 70

Interface FPGA Version Test 70

Interface FPGA Register Test 70

FPGA to FPGA Communication Test 70

SPI Bus Communication Test 70

EEPROM Test 70

Probe ID Read Test 71

Chip Registers Read/Write Test 71

Freq Synth Lock Detect Test 71

Acquisition Chip BIST Test 71

Resource Bus Connection Test 71

Comparator Programming Test 71

Comparator/DAC Test 71

Comparator Delay Test 72

Comparator Zero-Hold Cal Test 72

Comparator Calibrations Test 72

Acquisition Memory Write/Read Test 72

Acquisition Memory Cell Test 72

ATB (AXIe Trigger Bus) Test 73

To run the self tests 74

To exit the test system 75

To test the cables 76

6 Returning and Replacing a U4154A Module or its cables

To remove the U4154A module 86

U4154A Logic Analyzer Service Guide 9

Contents

To remove the logic analyzer cable 86

To install the U4201A logic analyzer cable 87

To replace the circuit board 87

To return the U4154A module or cable for Repair/Exchange 88

Index

10 U4154A Logic Analyzer Service Guide

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