User's Manual

Bay Level Offset Calibration – continued

FEB 2005 1X SC 4812T Lite BTS Optimization/ATP 3-125

PRELIMINARY

Table 3-42: Download BLO Data Procedure

n 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 BBX Cards must be successfully completed

prior to performing the Calibration Audit.

NOTE

TX Path Audit

Perform the Calibration Audit of the TX Paths of all equipped BBX

Slots, per the steps in Table 3-43.

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

Before installing any Test Equipment directly to any TX

OUT Connector, first verify that there are no CDMA

BBX channels keyed.

Failure to do so can result in serious personal injury

and/or equipment damage.

WARNING