User Manual

Troubleshooting: Transmit ATP
6-8 1X SC4812T–MC BTS Optimization/ATP 5/21/04
DRAFT
BTS passed Reduced ATP tests
but has forward link problem
during normal operation
Follow the procedure in Table 6-10 to troubleshoot a Forward Link
problem during normal operation.
Table 6-10: Troubleshooting Forward Link Failure (BTS Passed Reduced ATP)
n Step Action
1 Perform these additional TX tests to troubleshoot a forward link problem:
– TX mask
– TX rho
– TX code domain
Cannot Perform TX Mask
Measurement
Follow the procedure in Table 6-11 to troubleshoot a TX mask
measurement failure.
Only one carrier can be tested at a time. All PAs must be
INS during testing. For the carriers not under test, key one
BBX per carrier to a minimum power level. (Refer to
Table 3-37).
NOTE
Table 6-11: Troubleshooting TX Mask Measurement Failure
n Step Action
1 Verify that TX audit passes for the BBX(s).
2 If performing manual measurement, verify analyzer setup.
3 Verify that no PA in the sector is in alarm state (flashing red LED).
Re-set the PA 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 6-12 to troubleshoot a rho or pilot time
offset measurement failure.
Table 6-12: Troubleshooting Rho and Pilot Time Offset Measurement Failure
n 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.
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