User's Manual

CSM System Time/GPS and LFR/HSO Verification
68P09255A61-4
Aug 2002
1X SC 4812T BTS Optimization/ATP Software Release 2.16.1.x
FIELD TRIAL
3-36
Table 3-19: GPS Initialization/Verification
Step Action
1 To verify that Clock alarms (0000), Dpll is locked and has a reference source, and
GPS self test passed messages are displayed within the report, issue the following MMI
command
bstatus
- Observe the following typical response:
Clock Alarms (0000):
DPLL is locked and has a reference source.
GPS receiver self test result: passed
Time since reset 0:33:11, time since power on: 0:33:11
2 Enter the following command at the CSM> prompt to display the current status of the Loran and the
GPS receivers.
sources
- Observe the following typical response for systems equipped with LFR:
N Source Name Type TO Good Status Last Phase Target Phase Valid
-------------------------------------------------------------------------
0
LocalGPS Primary 4 YES Good 00Yes
1 LFR CHA Secondary 4 YES Good -2013177 -2013177 Yes
2 Not Used
Current reference source number: 0
- Observe the following typical response for systems equipped with HSO:
Num Source Name Type TO Good Status Last Phase Target Phase Valid
----------------------------------------------------------------------------
0 Local GPS Primary 4 Yes Good 3 0 Yes
1
HSO Backup 4 No N/A timed-out* Timed-out* No
*NOTE “Timed-out” should only be displayed while the HSO is warming up. “Not-Present” or
“Faulty” should not be displayed. If the HSO does not appear as one of the sources, then configure the
HSO as a back-up source by entering the following command at the CSM> prompt:
ss 1 12
After a maximum of 15 minutes, the Rubidium oscillator should reach operational temperature and the
LED on the HSO should now have changed from red to green. After the HSO front panel LED has
changed to green, enter
sources <cr> at the CSM> prompt. Verify that the HSO is now a valid
source by confirming that the bold text below matches the response of the “sources” command.
The HSO should be valid within one (1) minute, assuming the DPLL is locked and the HSO rubidium
oscillator is fully warmed.
Num Source Name Type TO Good Status Last Phase Target Phase Valid
----------------------------------------------------------------------------
0 Local GPS Primary 4 Yes Good 3 0 Yes
1
HSO Backup 4 Yes N/A xxxxxxxxxx xxxxxxxxxx Yes
3 HSO information (underlined text above, verified from left to right) is usually the #1 reference source.
If this is not the case, have the OMCR determine the correct BTS timing source has been identified in
the database by entering the
display bts csmgen command and correct as required using the edit
csm csmgen refsrc command.
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