User's Manual

Bay Level Offset Calibration – continued
PRELIMINARY
SC 4812ETL BTS Optimization/ATP
08/15/2000
3-70
Table 3-33: BTS TX Path Calibration
Step Action
1 Select the BBX2(s) to be calibrated.
2 From the Tests menu, select TX Calibration or All Cal/Audit.
3 Select the appropriate carrier(s) displayed in the Channels/Carrier pick list.
Press and hold the <Shift> or <Ctrl> key to select multiple items.
4 Type the appropriate channel number in the Carrier n Channels box.
5 Click on OK.
6 Follow the cable connection directions as they are displayed.
The test results will be displayed in the status report window.
7 Click on Save Results or Dismiss to close the status report window.
Exception Handling
In the event of a failure, the calibration procedure displays a FAIL
message in the status report window and provides information in the
Description field.
Recheck the test setup and connection and re–run the test. If the tests fail
again, note specifics about the failure, and refer to Chapter 6,
Troubleshooting.
Download BLO Procedure
After a successful TX path calibration, download the bay level offset
(BLO) calibration file data to the BBX2s. BLO data is extracted from the
CAL file for the Base Transceiver Subsystem (BTS) and downloaded to
the selected BBX2 devices.
If a successful All Cal/Audit was completed, this
procedure does not need to be performed, as BLO is
downloaded as part of the All Cal/Audit.
NOTE
Prerequisites
Ensure the following prerequisites have been met before proceeding.
S BBXs being downloaded are OOS–RAM (yellow).
S TX calibration successfully completed
Follow the steps in Table 3-34 to download the BLO data to the BBX2s.
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