Verifying antenna installation – Symmetricom XL-GPS User Manual
Page 32
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997-01530-01, Rev. C-25, Jan 2008
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generate 10 MPPS and the procedure would be complete. The same method can be used to configure
any of the outputs.
Note
: PPO and Alarm are only available if those options have been purchased and are enabled using
F126 – Options Key Entry (page 108).
Note
: F90 – Code Output Configuration does not control the IRIG signals on the Expansion Module.
Verifying Antenna Installation
After completing the above steps, use the keypad to verify the following:
•
In
F119 – GPS Receiver Configuration (page 104)
, after approximately 20 minutes of operation,
check that GPS STATUS is LOCKED and GPS ANTENNA is OK.
•
In
F73 – Alarm Control / Status (page 64)
, check that the GPS PRI is OK and is ALARM
ENABLED (the same for GPS SEC, if two GPS receivers are present). Clear any alarm latches if
present.
•
Press the STATUS key. “LOCKED GPS PRI” should appear on the front panel display without
an asterisk
. If an asterisk appears, it means that a reference source is not available.
To troubleshoot a problematic Antenna installation, recheck the physical location of the antenna, the
cabling, and the configuration settings described in this manual.
Switch Position Signal Type
0
Off
1
10 MPPS
2
5 MPPS
3
1 MPPS
4
100 kPPS
5
10 kPPS
6
1 kPPS
7
1 PPS
8
Code DC (IRIG-B DC Time Code)
9
PPO
A
Alarm
B-F
Not Used