Agilent Technologies 35670A User manual

Agilent Technologies
Agilent 35670A
Dynamic Signal Analyzer
Supplement to Installation,
Service and Operator’s Guide

2Agilent 35670A Supplement
Notices
© Agilent Technologies, Inc. 2002, 2003, 2006
No part of this manual may be reproduced in any
form or by any means (including electronic stor-
age and retrieval or translation into a foreign lan-
guage) without prior agreement and written
consent from Agilent Technologies, Inc. as gov-
erned by United States and international copy-
right laws.
Manual Part Number
35670-90067
Edition
Third Edition. August 2006
Printed in Malaysia
Agilent Technologies, Inc.
3501 Stevens Creek Blvd.
Santa Clara, CA 95052 USA
Microsoft® and Windows® are U.S. registered
trademarks of Microsoft Corporation.
Software Revision
This guide is valid for the firmware that was
installed in the instrument at the time of manu-
facture.
Warranty
The material contained in this document
is provided “as is,” and is subject to being
changed, without notice, in future edi-
tions. Further, to the maximum extent per-
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CAUTION
A CAUTION notice denotes a hazard. It
calls attention to an operating proce-
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could result in damage to the product
or loss of important data. Do not pro-
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A WARNING notice denotes a hazard.
It calls attention to an operating pro-
cedure, 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.

Agilent 35670A Supplement 3
In This Supplement
Purpose
The purpose of this supplement is to describe changes to the
display of the Agilent 35670A. These changes apply only to
instruments with a serial number higher than MY42506200 made
after December 2002.
Most users of the Agilent 35670A will see few or no changes in the
operation of the instrument. The changes apply to specific sections
of the Agilent 35670A Operator’s Guide, the Agilent 35670A
Installation and Verification Guide, and the Agilent 35670A
Service Guide.
How to Use This Supplement
You may use these supplement pages to mark up your other guides
or you may place supplement pages in the appropriate locations in
those guides. Each segment of this document indicates which
section of the original guide is affected by the changes. Only
content which has changed is presented here in order to avoid
confusion.

4Agilent 35670A Supplement

Agilent 35670A Supplement 5
Contents
1Overview
Summary of Changes 8
Display 8
Rear panel 8
Board revisions 8
2 Installation and Verification Guide
Preparing the Analyzer for Use 10
To connect the analyzer to an external monitor 10
3 Operator’s Guide
Formatting the Display 12
To control the screen 12
4ServiceGuide
Preparing the Analyzer for Use 14
AC Power Cable and Grounding Requirements 14
To connect the analyzer to an external monitor 15
Troubleshooting the Analyzer 16
To perform initial verification 16
To troubleshoot the power supply 19
To troubleshoot power-up failures 20
To troubleshoot CPU, memory and buses failures 21
To troubleshoot display failures 22
To troubleshoot IIC bus failures 24
To troubleshoot fast bus failures 26
To troubleshoot memory or battery failures 27
Adjusting the Analyzer 28
Adjusting the analyzer 28
To adjust the frequency reference 28
To adjust the display voltage 28
Replacing Assemblies 29

6Agilent 35670A Supplement
What to do before replacing the CPU assembly 29
What to do after replacing an assembly 30
To r e m o v e C P U 31
To r e m o v e N V R A M 32
To remove memory 32
To remove motherboard 32
Replaceable Parts 33
Assemblies 33
Cables 34
Instrument Covers and Handles 34
Front Panel Parts 35
Rear Panel Parts 36
Chassis Parts 36
Miscellaneous Parts 36
Circuit Descriptions 37
Overall Block Diagram 37
A7 CPU 39
A8 Memory 43
A9 NVRAM 43
A102 DC-DC Converter 43
Voltages and Signals 44
Voltages and Signals 44
Assembly Locations and Connections 45
Power Supply Voltage Distribution 48
A8 Memory 48
A9 NVRAM 49
A99 Motherboard 49
A101 Display 50
A102 DC-DC Converter 51

7
Agilent 35670A Dynamic Signal Analyzer
Supplement to Installation, Service and Operator’s Guide
Agilent Technologies
1
Overview
The changes to the Agilent 35670A Dynamic Signal Analyzer
will not be noticeable to most users. The changes covered in the
supplement include:
•new display
•new CPU board that also incorporates the memory and
NVRAM boards
•memory options are now standard
•new external monitor interface which supports XGA
resolution.
•DC- DC converter has been replaced by a power inverter

8Agilent 35670A Supplement
1Overview
Summary of Changes
Display
Changes in the display will be imperceptible to most users. The
changes are mainly at the assembly level and are addressed in
the Service Guide.
Rear panel
The illustration below shows the new rear panel. The only
change is in the location of the external monitor connection.
This is the only place in this supplement that shows the new
rear panel unless a detailed illustration is required.
Board revisions
Throughout this supplement please note that the following is
true for all instances of the following board numbers:
•A7 (CPU) is now A17
•A8 (memory) in now incorporated into A17
•A9 (NVRAM) in now incorporated into A17 and is no longer
an option
These are global changes and will not be noted in each instance
to avoid a large number of insignificant changes.
Figure 1 Rear panel

9
Agilent 35670A Dynamic Signal Analyzer
Supplement to Installation, Service and Operator’s Guide
Agilent Technologies
2
Installation and Verification Guide
The Agilent 35670A has incorporated a standard VGA
monitor output and is now compatible with most monitors.

10 Agilent 35670A Supplement
2Installation and Verification Guide
Preparing the Analyzer for Use
To connect the analyzer to an external monitor
The External Monitor is a standard 15- pin miniature connector
that can interface with an external monitor. The monitor must
be compatible with the 49.74 kHz line rate, 61.6 Hz frame rate,
analog RGB signals, and TTL sync signals provided by the
Agilent 35670A.
1Set the analyzer’s power switch to on (|).
2Set the monitor’s power switch to on.
3Connect the external monitor’s input cable to the analyzer’s
rear panel EXT MONITOR connector.
4Press the following keys to enable external display mode:
[Disp Format]
[MORE]
[MORE]
[EXT MON ON OFF]
Page in original guide 2-13
Figure 2 Rear panel showing external monitor connector
Pin 1
Pin6
Pin 11
Pin 5
Pin 10
Pin 15
Pin
Number
Signal Name Pin
Number
Signal Name Pin
Number
Signal Name
1 red analog output 6 Ground 11 Not connected
2 green analog output 7 Ground 12 Not connected
3 blue analog output 8 Ground 13 TTL Horizontal Sync
4 not connected 9 Not connected 14 TTL Vertical Sync
5 Ground 10 Ground 15 Not connected