Chapter 6 Backdating
Backdating Specifications
6-16
Assembly-Level Service Guide
6
Backdating Specifications
CHANGE 1 (53131A, Serial Prefix 3710A and Below)
Page 7-3, External Arm Input Specifications:
Change the Signal Input Range specification
from:
TTL Compatible
to:
High-Level Input: >3.0 V
Low-Level Input: <1.5 V
CHANGE 2 (53132A, Serial Prefix 3546A and Below)
Page 7-3, External Arm Input Specifications:
Change the Signal Input Range specification
from:
TTL Compatible
to:
High-Level Input: >3.0 V
Low-Level Input: <1.5 V
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 ...