Symmetricom 58502A User Manual
Page 43
Chapter 2 Performance Tests
58502A Calibration (Option 010 Only)
User’s Guide
2-17
Equipment
•
10 MHz Primary Frequency or House Standard: HP 5071A (or
equivalent)
•
Terminal or computer (PC): Any Model with communication
software and RS-232 connection
•
HP 53131A Universal Counter (or equivalent)
•
HP 24542U (or F1047-80002) (or equivalent) Serial Interface Cable
•
HP 10100C 50
Ω BNC Feedthrough (or equivalent)
•
Two BNC Cables (1 meter, male-to-male)
Procedures
Determining Frequency Difference
The frequency difference is measured by synchronizing the frequency
counter with a known standard and observing the 58502A frequency
output to a resolution of at least 10 digits.
1
Connect 10 MHz reference to HP 53131A Universal Counter’s (or
equivalent) rear-panel external timebase (Reference) input as shown in
Figure 2-7.
2
Connect any output of the 58502A to the Counter’s input as shown in
Figure 2-7.
3
Set the Counter’s gate time to 1-second to display at least 10 digits
(10,000,000.000).