User's Manual

Troubleshooting: Transmit ATP

08/01/2001

6-15

1X SCt4812ET Lite BTS Optimization/ATP

PRELIMINARY

Cannot Perform Txmask

Measurement

Table 6-12: Troubleshooting TX Mask Measurement Failure

n 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

Table 6-13: 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.

3 Re–load MGLI2 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.