User's Manual

Introduction
68P64115A18–1
Mar 2003
1X SC 4812T Lite BTS Optimization/ATP Software Release R2.16.1.x
DRAFT
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Introduction
Purpose
This procedure is a guide to performing calibration of new BTS
expansion carriers while the system remains in service. This procedure
also supports BTS recalibration following replacement of RF chain
components while the remainder of the site stays in service.
Motorola recommends performing this procedure during a maintenance
window.
This procedure cannot be performed on BTSs with 2–to–1 combiners.
The procedure can only be performed on one carrier of the BTS at a
time. That is, LPAs 1A, 1B, 1C, and 1D can be calibrated while LPAs
3A, 3B, 3C, and 3D remain in service and vice versa.
Equipment Stabilization and Calibration
NOTE
Calibration of the communications test set (or equivalent test
equipment) must be performed at the site before calibrating the
overall test equipment set. Calibrate the test equipment after it
has been allowed to warm-up and stabilize for a minimum of 60
minutes.
CAUTION
If any component of the test equipment set (for example, a test
cable, RF adapter, signal generator) has been replaced, the test
equipment set must be recalibrated. Failure to do so could
introduce measurement errors which ultimately result in
degradation of system performance.
1X Test Equipment Requirements
In–Service Calibration (ISC) of 1X carrier functions requires using the
following test equipment for the purposes indicated:
S An Advantest R3267 spectrum analyzer to perform TX calibration
S An Advantest R3562 signal generator for R3267 Delta Power
Calibration
S An Agilent E4406A Transmitter Test Set to perform TX calibration
S An Agilent E4432A signal generator for E4406A Delta Power
Calibration
S An Agilent 8935 series E6380A equipped with option 200 (if
purchased new) or option R2K (if retrofitted) to perform TX
calibration
The CDMA communications system analyzers listed above are capable
of calibrating the BTS for both IS–95 A and B mode operation as well as
CDMA2000 1X operation.
NOTE
IS–95A/B communication test sets such as the HP8921A/600
and Advantest R3561L can not calibrate 1X carrier functions.
Calibration and test set–up for the HP 8921A/600 and Advantest
R3561L test sets is included only for situations where it is necessary to
use them for calibration of IS–95A/B mode operation.
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