User's Manual

Troubleshooting: CSM Check-list68P09255A69-3
Aug 2002
1X SC4812ET Lite BTS Optimization/ATP Software Release 2.16.1.x
PRELIMINARY
6-19
GPS Bad RX Message Type
This is believed to be caused by a later version of CSM software (3.5 or
higher) being downloaded, via LMF, followed by an earlier version of
CSM software (3.4 or lower), being downloaded from the CBSC.
Download again with CSM software code 3.5 or higher. Return CSM
board back to repair center if attempt to reload fails.
CSM Reference Source Configuration Error
This is caused by incorrect reference (clock) source configuration
performed in the field by software download. CSM kit SGLN1145 and
SGLN4132 must have proper reference sources configured, as shown in
Table 6-18, to function correctly.
Table 6-18: CSM Reference (Clock) Sources by GPS Type and Kit Number
GPS Type CSM Kit No.
Hardware
Configuration
CSM
Slot No.
Reference Source Configuration
SGLN1145 With GPS Receiver 1 Primary = Local GPS
Backup = Either LFR or HSO
RF GPS
SGLN4132 Without GPS
Receiver
2 Primary = Mate GPS
Backup = Either LFR or HSO
REMOTE
SGLN4132ED
or later
Without GPS
Receiver
1 Primary = Remote GPS
Backup = Either LFR or HSO
REMOTE
GPS
2 Primary = Remote GPS
Backup = Either LFR or HSO
Takes Too Long for CSM to Come INS
This may be caused by a delay in GPS acquisition. Check the accuracy
flag status and/or current position. Refer to the CSM System Time/GPS
and LFR/HSO Verification section of Chapter 3. At least one satellite
should be visible and tracked for the “surveyed” mode, and four
satellites should be visible and tracked for the “estimated” mode. Also,
verify correct base site position data used in “surveyed” mode.
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