Agilent Technologies U4154A User manual

Agilent Technologies
Agilent U4154A Logic
Analyzer
Service Guide

Notices
© Agilent Technologies, Inc. 2013
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
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The material contained in this docu-
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ject to being changed, without notice,
in future editions. Further, to the max-
imum extent permitted by applicable
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Technology Licenses
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If software is for use in the performance of
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Limited Rights as defined in FAR 52.227-14
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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
Contents