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Appendix D Performance Tests
Operational Verification
Operating and Programming Guide D-5
Operational Verification
Introduction
The 58503B and 59551A GPS Receivers are designed to automatically
detect and acquire satellites in order to begin providing precise
frequency and time information.
Until such acquisition is complete and the unit is locked with
FFOM = 0, the signals produced on the rear panel are not precise.
However, it is possible to verify that the Receiver has been received in
good working condition by performing some simple operational
verification tests upon receipt.
Except for two tests (Time Stamp Verification and Programmable
Pulse Verification), all of the following operational verification tests do
not require usage of the GPS antenna. These tests are designed to
provide a high degree of confidence that the Receiver is functioning,
but the tests will not verify the specified performance characteristics.
Such testing requires more expensive equipment and very long test
times (over 72 hours per unit). We recommend that full or complete
Performance Testing be restricted to testing only after any repairs to
the 58503B or 59551A.
The 58503B and 59551A require no calibration.
Record the results of the Operational Verification in the
appropriate place on the appropriate (i.e., 58503B or 59551A)
Performance Test Record, which is located at the end of this
chapter.
Power-Up Procedure
NOTE Use the HP 10100C 50Ω feedthrough on the input of the oscilloscope
for the following test.
1 Connect the Receiver to a suitable power source. The unit will perform
a self-test of internal components.
2 Verify that after 15 seconds the Power indicator is on and the Alarm
indicator is off. This ensures that all internal components and
connections are functioning. (If needed, refer to the subsection titled
“To Connect Power” in Chapter 1 of the 58503B/59551A Getting
Started Guide for assistance in connecting the Receiver to a power
source.)