User's Manual Part 2

Introduction
08/01/2001
H-1
1X SCt4812ET Lite BTS Optimization/ATP
PRELIMINARY
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 side of the BTS at one
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 Warm up
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.
IMPORTANT
*
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.
CAUTION
1X Test Equipment
Requirements
Calibration of 1X carrier functions requires using either of the following
test equipment combinations:
S An Advantest R3267 spectrum analyzer with an Advantest R3562
signal generator
S An Agilent E4406A Transmitter Test Set with an Agilent E4432A
signal generator
S An Agilent 8935 series E6380A equipped with option 200 (if
purchased new) or option R2K (if retrofitted) and an Agilent E4432B
signal generator
These test equipment combinations are capable of calibrating the BTS
for both IS–95 A and B mode operation as well as IS–2000 CDMA 1X
operation.
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