User Manual

Bay Level Offset Calibration – continued

SC4812ET BTS Optimization/ATP — CDMA LMF

Jan 2002

3-92

Calibration Audit Introduction

The BLO calibration audit procedure confirms the successful generation

and storage of the BLO calibrations. 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 is used.

RF path verification, BLO calibration, and BLO data

download to BBXs must have been successfully completed

prior to performing the calibration audit.

IMPORTANT

Transmit (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