Instruction manual

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 Agilent Technologies Sales and Support Office.
Older Instruments
To adapt this guide to older Agilent 53131A/132A/181A Counters having a serial
prefix lower than 3711, perform the backdating provided in the following sections.
• Backdating Hardware page 6-3
• Backdating Firmware page 6-8
• Backdating Specifications page 6-16
Table 6-1. Instrument this Guide Directly Applies To
Instrument Serial Prefix Number
Agilent 53131A Universal Counter 3711
Agilent 53132A Universal Counter 3710
Agilent 53181A Frequency Counter 3711