User's Manual

Troubleshooting: Transmit ATP
SC 4812T CDMA BTS Optimization/ATP
May 2000
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Cannot Perform Txmask
Measurement
Follow the procedure in Table 6-10 to troubleshoot a TX mask
measurement failure.
Table 6-10: Troubleshooting TX Mask Measurement Failure
 Step Action
1 Verify that TX audit passes for the BBX2(s).
2 If performing manual measurement, verify analyzer setup.
3 Verify that no LPA in the sector is in alarm state (flashing red LED). Re-set the LPA by pulling the
circuit breaker, and, after 5 seconds, pushing it back in.
Cannot Perform Rho or Pilot
Time Offset Measurement
Follow the procedure in Table 6-11 to troubleshoot a rho or pilot time
offset measurement failure.
Table 6-11: Troubleshooting Rho and Pilot Time Offset Measurement Failure
 Step Action
1 Verify presence of RF signal by switching to spectrum analyzer screen.
2 Verify PN offsets displayed on the analyzer is the same as the PN offset in the CDF file.
3 Re–load BBX2 data and repeat the test.
4 If performing manual measurement, verify analyzer setup.
5 Verify that no LPA in the sector is in alarm state (flashing red LED). Reset the LPA by pulling the
circuit breaker, and, after 5 seconds, pushing back in.
6 If Rho value is unstable and varies considerably (e.g. .95,.92,.93), this may indicate that the GPS
is still phasing (i.e. trying to reach and maintain 0 freq. error). Go to the freq. bar in the upper
right corner of the Rho meter and select Hz. Press <Shift–avg> and enter 10, to obtain an average
Rho value. This is an indication the GPS has not stabilized before going INS and may need to be
re-initialized.
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