User's Manual

Table Of Contents
Troubleshooting: Transmit ATP
6-18 1X SC 4812T Lite BTS Optimization/ATP FEB 2005
PRELIMINARY
BTS Passed Reduced ATP
Tests but Has Forward Link
Problem in Normal Operation
Perform the procedure in Table 6-15 to troubleshoot a Forward Link
problem during normal operation after passing a reduced ATP.
Table 6-15: Forward Link Failure (BTS Passed Reduced ATP) Troubleshooting Procedure
n Step Action
1 Perform the following additional tests to troubleshoot a Forward Link problem:
1a TX Mask
1b TX Rho
1c TX Code Domain
Cannot Perform TX Mask
Measurement
Table 6-16: TX Mask Measurement Failure Troubleshooting Procedure
n Step Action
1 Verify that the TX Audit passes for the BBX(s).
2 If performing manual measurement, verify that the analyzer is set–up correctly.
3 Verify that no LPA in the sector is in Alarm State (flashing red LED).
4 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
Table 6-17: Rho and Pilot Time Offset Measurement Failure Troubleshooting Procedure
n Step Action
1 Verify the presence of the RF Signal by switching to the Spectrum Analyzer Screen.
2 Verify that the PN Offsets displayed on the analyzer is the same as the PN Offset in the CDF File.
3 Re–load MGLI Code and Data, and repeat the test.
4 If performing manual measurement, verify that the analyzer is set–up correctly.
5 Verify that no LPA in the sector is in Alarm State (flashing red LED).
6 Reset the LPA by pulling the circuit breaker, and, after 5 seconds, pushing back in.
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