HP 53150A Series Programming Manual page 3

Programming Guide
This guide describes how to program the HP 53150A, 53151A, and 53152A
Microwave Frequency Counters. The information in this guide applies to
instruments having the number prefix listed below, unless accompanied
by a "Manual Updating Changes" package indicating otherwise.
SERIAL PREFIX NUMBER:
HP 53150A/151A/152A Microwave
Frequency Counter
3735A and above (53150A)
3736A and above (53151A)
3737A and above (53152A)