User Manual

Bay Level Offset Calibration – continued

SC4812ET BTS Optimization/ATP — CDMA LMF

Jan 2002

3-84

TX Path Calibration

The TX Path Calibration assures correct site installation, cabling, and the

first order functionality of all installed equipment. The proper function

of each RF path is verified during calibration. The external test

equipment is used to validate/calibrate the TX paths of the BTS.

Before installing any test equipment directly to any TX

OUT connector you must first verify that there are no

CDMA channels keyed. Have the OMC–R place the sector

assigned to the LPA under test OOS. Failure to do so can

result in serious personal injury and/or equipment damage.

WARNING

Always wear a conductive, high impedance wrist strap

while handling any circuit card/module. If this is not done,

there is a high probability that the card/module could be

damaged by ESD.

CAUTION

At new site installations, to facilitate the complete test of

each CCP shelf (if the shelf is not already fully populated

with BBX boards), move BBX boards from shelves

currently not under test and install them into the empty

BBX slots of the shelf currently being tested to insure that

all BBX TX paths are tested.

– This procedure can be bypassed on operational sites

that are due for periodic optimization.

– Prior to testing, view the CDF file to verify the

correct BBX slots are equipped. Edit the file as

required to include BBX slots not currently equipped

(per Systems Engineering documentation).

IMPORTANT