Chapter 6 Backdating
Introduction
6-2
Assembly-Level Service Guide
6
Introduction
This chapter contains information necessary to adapt this guide to apply
to older instruments.
The backdating information includes the following:
Manual Changes
This guide applies directly to Counters with the following serial prefixes
listed in Table 6-1.
As engineering changes are made, newer instruments may have higher
serial prefix numbers than the one shown on the title page of this guide.
The guides for these instruments will be supplied with “Manual Updating
Changes” package containing the required information. Replace the
affected pages or modify existing guide information as directed in the
pages of the Manual Updating Changes package. Contact the nearest
Hewlett-Packard Sales and Support Office.
Older Instruments
To adapt this guide to older HP 53131A/132A/181A Counters having a
serial prefix lower than 3711, perform the backdating provided in the
following sections.
•
page 6-3
•
page 6-8
•
page 6-16
Table 6-1. Instrument this Guide Directly Applies To
Instrument
Serial Prefix Number
HP 53131A Universal Counter
3711
HP 53132A Universal Counter
3710
HP 53181A Frequency Counter
3711
Summary of Contents for 53131A
Page 1: ...Assembly Level Service Guide HP 53131A 132A 181A 225 MHz Counter ...
Page 2: ......
Page 14: ...Contents xii Assembly Level Service Guide ...
Page 22: ...Preface xx Assembly Level Service Guide ...
Page 23: ...1 Performance Tests Verifying Specifications ...
Page 97: ...2 Service ...
Page 149: ...3 Replacing Assemblies Disassembly and Reassembly ...
Page 173: ...4 Retrofitting Options ...
Page 191: ...5 Replaceable Parts ...
Page 201: ...6 Backdating Manual Changes ...
Page 218: ...Chapter 6 Backdating Backdating Specifications 6 18 Assembly Level Service Guide 6 ...
Page 219: ...7 HP 53131A 132A Specifications ...
Page 235: ...8 HP 53181A Specifications ...
Page 246: ...Chapter 8 HP 53181A Specifications General Information 8 12 Assembly Level Service Guide 8 ...
Page 252: ......
Page 254: ... Manual Part Number 53131 90039 Printed in U S A MARCH 1999 ...