User's Manual Part 3

TX Code Domain Power Acceptance Test

Apr 2001

4-9

SC4812ET BTS Optimization/ATP — CDMA LMF

DRAFT

Background: Code Domain

Power Test

This test verifies the Code Domain Power/Noise of each BBX2 carrier

keyed up at a specific frequency per the current CDF file assignment.

All tests are performed using the external calibrated test set controlled by

the same command. All measurements are via the appropriate TX OUT

(BTS/RFDS) connector.

For each sector/antenna under test, the Pilot Gain is set to 262 and all

MCC channel elements under test are configured to generate Orthogonal

Channel Noise Source (OCNS) on different odd Walsh codes, and are

assigned a full–rate gain of 81. The maximum number of MCC/CEs to

be tested an any one time is 32 (32 odd Walsh codes). If more than 32

CEs exist, then multiple sets of measurements are made, so all channel

elements are verified on all sectors.

BBX2 power output is set to 40 dBm as measured at the TX OUT

connector (on either the BTS or RFDS directional coupler).

Code domain power levels, which have been set for all ODD numbered

Walsh channels, are verified using the OCNS command. This is done by

verifying that Pilot Power (dBm) minus OCNS Power (dBm) is equal to

10.2 + 2 dB and that the noise floor of all “OFF” Walsh channels

measures

< –27 dB (with respect to total CDMA channel power).

The BBX2 then de-keys and, the applicable redundant BBX2 is assigned

to the current TX antenna path under test. The test is then repeated.

Upon completion of the test, OCNS is disabled on the specified

MCC/CE.