User's Manual

Bay Level Offset Calibration68P64115A18–1
Mar 2003
1X SC 4812T Lite BTS Optimization/ATP Software Release R2.16.1.x
DRAFT
3-95
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.
NOTE
RF path verification, BLO calibration, and BLO data download
to BBXs must have been successfully completed prior to
performing the calibration audit.
TX Path Audit
Perform the calibration audit of the TX paths of all equipped BBX slots,
per the steps in Table 3-37.
WARNING
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.
NOTE
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.
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.
Prerequisites
Before running this test, the following should be done:
S The card in slot CSM 1, GLIs, BBXs have correct code load.
S Primary CSM and MGLI are INS_ACT (bright green).
S All BBXs are OOS_RAM (yellow).
S Test equipment and test cables are calibrated and connected for TX
BLO calibration.
S LMF is logged into the BTS.