Specifications

Chapter 6 Backdating
Introduction
248 Assembly-Level Service Guide
Introduction
This chapter contains information necessary to adapt this service guide to
older instruments.
The backdating information includes the following:
• Backdating Firmware
• Procedure Changes
• Backdating Hardware
• Backdating Specifications
Serial Numbers
NOTE The serial number prefix for your counter is the first 5 character
positions in the serial number shown on the counter (for example:
MY500
00125). The counter serial number suffix (for example:
MY50000125
) is the production number of the counter. The whole
number (MY50000125) is the actual serial number of the counter.
See Figure 6-1.
This guide applies directly to Counters with the serial prefixes listed in
Table 6-1. (See also Figure 6-1.)
Table 6-1. Instruments this Guide Directly Applies To
Instrument Serial Prefix Number
Agilent 53210A 350 MHz 10-Digit RF
Counter
MY500 or SG500
Agilent 53220A 350 MHz 10-Digit
Universal Counter
MY500 or SG500
Agilent 53230A 350 MHz 12-Digit
Universal Counter
MY500 or SG500