Agilent Technologies 16901A User manual

Agilent Technologies
Agilent 16901A
Logic Analysis System
Service Guide

Notices
© Agilent Technologies, Inc. 2006, 2007,
2011
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
16901-97002
Edition
Third edition, November 2011
Printed in Malaysia
Agilent Technologies, Inc.
1900 Garden of the Gods Road
Colorado Springs, CO 80907 USA
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in future editions. Further, to the max-
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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.
2 16901A Logic Analysis System 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.

16901A Logic Analysis System Service Guide 3
The Agilent 16901A Logic Analysis System—At a Glance
The Agilent Technologies 16901A logic analysis system is a
modular system.
Features
•Two slots for logic analyzers and other types of
measurement modules.
•Multiframe Pro for making time- correlated measurements
with a logic analysis system made up of multiple 16900A,
16901A, and 16902A frames.
•Built- in 15 inch TFT color touch screen LCD display,
1,024 x 768 (XGA) resolution.
•250 GB hard disk drive (or external hard drive 16901A
Option 109).
•10/100 Base- T LAN port.
•USB 2.0 ports (six total, two on front, four on back).
•One PCI expansion slot.
•One PCI Express x1 expansion slot.
•Windows® XP Professional operating system. Windows 7
operating system on logic analyzers with serial numbers
MY50370000 or higher.
•Agilent Logic Analyzer application which takes the
complexity out of making logic analyzer measurements.
You can perform all operations directly from one window.

4 16901A Logic Analysis System Service Guide
Supplied Accessories
•PS2 mouse.
•PS2 keyboard.
•Accessory pouch and power cord.
Optional Accessories:
•Multiframe cable (E5861A).
•Probes.
Service Strategy
The service strategy for this instrument is the replacement
of defective assemblies. This service guide contains
information for finding a defective assembly by testing and
servicing the 16901A logic analysis system.
This instrument 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.

16901A Logic Analysis System Service Guide 5
In this Service Guide
This book is the service guide for the 16901A logic analysis
system and is divided into eight chapters.
Chapter 1, “General Information” contains information about
the instrument’s characteristics.
Chapter 2, “Preparing for Use” tells how to prepare the
instrument for use.
Chapter 3, “Testing Performance” gives instructions on how
to test the performance of the instrument.
Chapter 4, “Calibrating and Adjusting” contains calibration
instructions for the instrument.
Chapter 5, “Troubleshooting” contains self- tests and
flowcharts for troubleshooting the instrument.
Chapter 6, “Replacing Assemblies” tells how to replace the
instrument and assemblies of the instrument, and how to
return them to Agilent Technologies.
Chapter 7, “Replaceable Parts” lists replaceable parts, shows
exploded views, and gives ordering information.
Chapter 8, “Theory of Operation” explains how the
instrument works and what the self- tests are checking.
Revision History
Table 1 Revision History
Revision Reason
16901-97002, November 2011
(this version)
Changes in replaceable part numbers and the
recovery procedure for the 16901A logic
analysis systems that are shipped with
Windows 7 installation (serial numbers
MY50370000 or greater)
16901-97001, June 2007 Corrected module interface board (MIB) part
number.
16901-97000, November 2006 First edition.

6 16901A Logic Analysis System Service Guide

16901A Logic Analysis System Service Guide 7
Contents
The Agilent 16901A Logic Analysis System—At a Glance 3
In this Service Guide 5
1 General Information
Electrical and Operating Environment Characteristics 12
Dimensions 14
2 Preparing for Use
To inspect the logic analysis system 16
To apply power 16
To connect multiple frames 17
To install measurement modules 17
To clean the instrument 17
3 Testing Performance
Self-Tests 20
Te s t I n t e r v a l 20
To perform the power-up tests 21
4 Calibrating and Adjusting
Calibration Strategy 24
Calibrations and Adjustments for Modules 24
5 Troubleshooting
To use the 16901A troubleshooting flowcharts 26
To troubleshoot power problems 32
Power Supplies 32
To check the power supply voltages 32
To run the self-tests 35
To exit the test system 36

8 16901A Logic Analysis System Service Guide
Contents
To restore the system software 37
On a Legacy 16901A Series Logic Analysis system with Windows XP
Installation 37
On a 16901A Series Logic Analysis system with Windows 7
Installation 37
Contacting Agilent Service/Support 41
6 Replacing Assemblies
16901A Logic Analysis System Disassembly/Assembly 44
Replacement Strategy 44
Tools Require d 44
To save the license file 45
To prepare the instrument for disassembly 46
To power off the system 46
To remove and replace optional modules or filler panels 48
To remove and replace the cover 50
To remove and replace the power supplies 51
600 watt power supply 51
Secondary power supply 52
To remove and replace the PCI or display board 54
To remove and replace the motherboard 55
To remove and replace the front panel assembly 57
To remove and replace the backlight inverter board 59
To remove and replace the touch screen controller board 61
To remove and replace the front panel bracket assembly 62
To remove and replace the USB cables 63
To remove and replace the display assembly 64
To remove and replace the keypad and keypad board 66
To replace the hard disk drive 68
If you have a 16901 series Logic Analysis system with Windows XP
installation 68
If you have a 16901 series Logic Analysis system with Windows 7
installation 68
To remove and replace the tray assembly 69
To remove and replace the fans 70
60 mm fan 70
92 mm fans 71
To remove and replace the line filter assembly 72

16901A Logic Analysis System Service Guide 9
Contents
To replace the module interface board 73
Returning Assemblies 74
7 Replaceable Parts
Ordering Replaceable Parts 76
Exchange Assemblies 76
Power Cables and Plug Configurations 77
Replaceable Parts List 79
Cover and Front Panel Assemblies 80
16901A Frame 83
8 Theory of Operation
Block Level Theory 88
CPU Subsystem 91
PCI board 92
MIB (Module Interface Board) 92
Front Panel Assembly 95
Power Up Routine 96
Index

10 16901A Logic Analysis System Service Guide
Contents

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Agilent 16901A Logic Analysis System
Service Guide
Agilent Technologies
1
General Information
Electrical and Operating Environment Characteristics 12
Dimensions 14
This chapter contains information on electrical and operating
environment characteristics and dimensions.
See the logic analysis system’s online help for a full listing
of all specifications and characteristics.

12 16901A Logic Analysis System Service Guide
1General Information
Electrical and Operating Environment Characteristics
The following operating characteristics are not specifications,
but are typical operating characteristics for the Agilent
16901A logic analysis system.
Electrical Characteristics
Power Requirements Frame (16901A): 115/230 Vac +/- 20%, 48-66Hz, 775W Max
The line voltage is autodetected by the instrument.
CAT II (Line voltage in appliance and to wall outlet)
Pollution degree 2
Environmental Characteristics
For indoor use only.
Tem pe ra ture Instrument (16901A): 0° to + 45° C (+32° to +113° F)
Probes/cables: 0° to + 65° C (+32° to +149° F)
Altitude 3,000 m (10,000 ft)
Humidity Relative humidity 8% to 80% at 40° C (104° F). Avoid sudden, extreme temperature changes which
could cause condensation on the circuit board.
Vibration Operating: random vibration 0-500 Hz, 10 minutes per axis, 0.3 g (rms).
Non-operating: random vibration 0-500 Hz, 10 minutes per axis, 2.41g (rms); and swept sine resonant
search, 0-500 Hz, 0.75g, 5-minute resonant dwell at 4 resonances per axis.
Weight Model Max Net Max Shipping
16901A 13.6 kg (30.0 lbs) 20.4 kg (45.0 lbs)
The weight of modules ordered with mainframes will add 0.9 kg (2.0 lb) per module.
Storage Store or ship the instrument in environments within the following limits:
Temperature -40°C to +75°C (-40°F to 167°F)
Humidity up to 90% at 65° C (149°F)
Altitude up to 3,000 meters (10,000 feet)
Protect the system from temperature extremes which cause condensation on the instrument.

General Information 1
16901A Logic Analysis System Service Guide 13
Trigger In
The Trigger In connector is 5V Max pk and DC, CAT I (line
isolated).
Clock In
The Clock In connector is 5.5V Max pk and DC, CAT I (line
isolated).
!
!

14 16901A Logic Analysis System Service Guide
1General Information
Dimensions
The following figure provides dimensions for the 16901A
logic analysis system mainframe in centimeters and inches.

15
Agilent 16901A Logic Analysis System
Service Guide
Agilent Technologies
2
Preparing for Use
To inspect the logic analysis system 16
To apply power 16
To connect multiple frames 17
To install measurement modules 17
To clean the instrument 17

16 16901A Logic Analysis System Service Guide
2Preparing for Use
To inspect the logic analysis system
1Inspect the shipping container for damage.
If the shipping container or cushioning material is
damaged, keep them until you have checked the contents
of the shipment and checked the instrument mechanically
and electrically.
2Check the supplied accessories.
Accessories supplied with the logic analyzer are listed on
page 4.
3Inspect the product for physical damage.
Check the logic analyzer and the supplied accessories for
obvious physical or mechanical defects. If you find any
defects, contact your nearest Agilent Technologies Sales
Office. Arrangements for repair or replacement are made,
at Agilent Technologies' option, without waiting for a
claim settlement. Contact information is located on
page 4.
To apply power
1Connect the supplied power cord to the instrument and
to the power source.
This instrument autodetects the line voltage from 115 VAC
to 230 VAC. It is equipped with a three-wire power cable.
When connected to an appropriate AC power outlet, this
cable grounds the instrument cabinet. The type of power
cable plug shipped with the instrument depends on the
model ordered and the country of destination. Refer to
“Power Cables and Plug Configurations” on page 77 more
information on power cables.
2Turn on the power switch located on the front panel.
For first- time power up considerations and setup steps,
refer to the Installation Guide that came with your
instrument. To get the most up- to- date installation guide:
•Go to www.agilent.com.
WARNING
Hazardous voltages exist in this instrument. To avoid electrical
shock, do not apply power to a damaged instrument.

Preparing for Use 2
16901A Logic Analysis System Service Guide 17
•Search for 16901A Logic Analysis System.
•Look under Technical Support and then Manuals and
Guides.
To connect multiple frames
If you need to make time-correlated measurements with
more logic analysis channels than can be installed into a
single logic analysis system frame, you can connect multiple
16900A, 16901A, and 16902A frames together. Refer to the
Installation Guide that came with your instrument for
Multiframe Pro configurations. To get the most up- to- date
installation guide:
•Go to www.agilent.com.
•Search for 16901A Logic Analysis System.
•Look under Technical Support and then Manuals and
Guides.
To install measurement modules
For general information on installing a measurement module
into the mainframe refer to the Installation Guide that came
with your instrument. To get the most up- to- date
installation guide:
•Go to www.agilent.com.
•Search for 16901A Logic Analysis System.
•Look under Technical Support and then Manuals and
Guides.
To clean the instrument
If the instrument requires cleaning:
1Remove power from the instrument.
2Clean the external surfaces of the instrument with a soft
cloth dampened with a mixture of mild detergent and
water.
3Make sure that the instrument is completely dry before
reconnecting it to a power source.

18 16901A Logic Analysis System Service Guide
2Preparing for Use

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Agilent 16901A Logic Analysis System
Service Guide
Agilent Technologies
3
Testing Performance
Self-Tests 20
Te s t I n t e r v a l 20
To perform the power-up tests 21
To ensure the logic analysis system is operating correctly,
you can perform software tests (self- tests) on the system.
Directions for performing the software tests are given in this
chapter. Because there are no specifications for the 16901A
logic analysis system, there are no performance verification
tests.

20 16901A Logic Analysis System Service Guide
3Testing Performance
Self-Tests
The self- tests listed in this chapter check the functional
operation of the mainframe. Self- tests for the optional
modules installed in the frames are listed in the individual
module Service Guides.
There are two types of self- tests: self- tests that automatically
run at powerup, and self- tests that you select on the screen.
For descriptions of the tests, refer to Chapter 8, “Theory of
Operation.”
Perform the self- tests as an acceptance test when receiving
the logic analysis system or when the logic analysis system
is repaired.
If a test fails, refer to Chapter 5, “Troubleshooting.”
Test Interval
There is no recommended test interval for the 16901A logic
analysis system mainframe. However, each of the supported
modules has performance verification tests and therefore
require a periodic verification of specifications. Refer to the
Service Guides of the individual modules for more
information.