User's Manual Part 2

Bay Level Offset Calibration – continued

Apr 2001

3-65

SC4812ET BTS Optimization/ATP — CDMA LMF

DRAFT

Before installing any test equipment directly to any TX

OUT connector, first verify there are no CDMA BBX2

channels keyed. Failure to do so can result in serious

personal injury and/or equipment damage.

WARNING

Verify all BBX2 boards removed and repositioned have

been returned to their assigned shelves/slots. Any BBX2

boards moved since they were downloaded will have to be

downloaded again.

IMPORTANT

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 BLO calibration

file data to the BBX2s. BLO data is extracted from the CAL file for the

BTS and downloaded to the selected BBX2 devices.