User's Manual

Troubleshooting: Calibration – continued
08/01/2001
6-11
1X SCt4812ET Lite BTS Optimization/ATP
PRELIMINARY
Calibration Audit Failure
Table 6-11: Troubleshooting Calibration Audit Failure
n Step Action
1 Verify Power Meter is configured correctly (refer to the test equipment setup
section).
2 Re-calibrate the Power Meter and verify it is calibrated correctly with cal factors
from the power sensor.
3 Verify that no LPA is in alarm state (rapidly flashing red LED). Reset the LPA by
pulling the circuit breaker, and, after 5 seconds, pushing back in.
4 Verify the power sensor is functioning properly by checking it with the 1 mW (0
dBm) Power Ref signal.
5 After calibration, the BLO data must be re-loaded to the BBXs before auditing.
Click on the BBX(s) and select Download Code > Download Data>Enable.
Re-try the audit.
6 Verify GPIB adapter is not locked up. Under normal conditions, only 2 green
LEDs must be ‘ON’ (Power and Ready). If any other LED is continuously ‘ON’,
power-cycle (turn power off and on) the GPIB Box and retry.
6