User's Manual

Bay Level Offset Calibration

68P09255A69-3

Aug 2002

1X SC4812ET Lite BTS Optimization/ATP Software Release 2.16.1.x

PRELIMINARY

3-88

Table 3-42: Download BLO

Step Action

1 Select the BBX(s) to be downloaded.

2 Click Device in the BTS menu bar, and select Download > BLO from the pull-down menus.

- A status report window displays the result of the download.

NOTE

Selected device(s) do not change color when BLO is downloaded.

3 Click OK to close the status report window.

Calibration Audit Introduction

The BLO calibration audit procedure confirms the successful generation

and storage of the BLO calibration values. The calibration audit

procedure measures the path gain or loss of every BBX transmit path at

the site. In this test, actual system tolerances are used to determine the

success or failure of a test. The same external test equipment set-up

required for TX calibration is used for TX audit.

RF path verification, BLO calibration, and BLO data

download to BBXs must have been successfully completed

prior to performing the calibration audit.

IMPORTANT

TX Path Audit

Perform the calibration audit of the TX paths of all equipped BBX slots,

per the steps in Table 3-43.

Before installing any test equipment directly to any TX

OUT connector, first verify there are no CDMA BBX

channels keyed. Failure to do so can result in serious

personal injury and/or equipment damage.

WARNING

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

TX Audit Test

The Tests menu item, TX Audit, performs the TX BLO Audit test for

BBXs. All measurements are made through the appropriate TX output

connector using the TX calibration setup.