User's Manual

CSM System Time – GPS & LFR/HSO Verification68P09258A31–A
Oct 2003
1X SCt 4812T BTS Optimization/ATP
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Prerequisites
S The LMF is not logged into the BTS.
S The COM1 port is connected to the MMI port of the primary CSM via
a null modem board.
S The primary CSM and the HSO (if equipped) have warmed up for 15
minutes.
If the BTS is equipped with an HSO, follow the procedure in Table 3-22
to configure the HSO.
Table 3-22: HSO Initialization/Verification
Step Action
1 At the BTS, slide the HSO card into the cage.
NOTE
The LED on the HSO should light red for no longer than 15-minutes, then switch to green. The CSM
must be locked to GPS.
2 On the LMF at the CSM> prompt, enter sources <cr>.
– 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 0 0 Yes
1 HSO Backup 4 Yes N/A xxxxxxx –69532 Yes
2 Not used
Current reference source number: 0
When the CSM is locked to GPS, verify that the HSO “Good” field is Yes and the “Valid” field is Yes.
3 If source “1” is not configured as HSO, enter at the CSM> prompt: ss 1 12 <cr>
Check for Good in the Status field.
4 At the CSM> prompt, enter sources <cr>.
Verify the HSO valid field is Yes. If not, repeat this step until the “Valid” status of Yes is returned. The
HSO should be valid within one (1) minute, assuming the DPLL is locked and the HSO Rubidium
oscillator is fully warmed.
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