User's Manual

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TX Code Domain Power/Noise Floor Acceptance Test
4-20 1X SC 4812T Lite BTS Optimization/ATP FEB 2005
PRELIMINARY
Background
Overview
This test verifies the Code Domain Power and Noise Floor of each
operator–selected BBX Carrier keyed at a specific frequency specified in
the current CDF. All tests are performed using the external, calibrated
Test Equipment controlled by the same command. All measurements are
made at the appropriate BTS TX Antenna Connector..
CDMA Channel Test Set–up
Pilot Gain should be set to 262 for each antenna and the selected MCC
Cards should be configured to supply all odd–numbered Walsh Code
Traffic Channel Elements by enabling Orthogonal Channel Noise Source
(OCNS) on all odd MCC Channel Elements (maximum 32 Full Rate
Channels with an OCNS Gain of 81).
All even–numbered Walsh Code Traffic Channel Elements should
have OCNS disabled, and are considered “OFF”.
Selected MCC Cards should be Forward–Link Enabled for the
antenna (sector) under test..
Equipment Operation During Testing
The BBX should be keyed–up using a BLO–corrected
bbxlvl Value to
generate a CDMA Carrier consisting of Pilot and OCNS Channels. RF
Output Power, as measured at the appropriate Frame TX Antenna
Connector, is set at one of the following values depending on the
Operating Frequency Spectrum.:
800 MHz: 33.5 dBm
1.9 GHz: 31.0 dBm
Test Measurements
The Test Equipment will measure and return the Channel Element
Power in dB of all specified Walsh Channels within the CDMA
spectrum. Additional calculations will be performed to verify that the
following parameters are met.
Refer to Figure 4-3 for graphic representations.:
S Traffic Channel Element Power Level will be verified by calculating
the ratio of Pilot Power to OCNS Gain of all Traffic Channels [Root
Sum of the Square (RSS) of each OCNS Gain divided by the Pilot
Power].
This value should be 10.2 dB + 2.0 dB.
S Noise Floor (unassigned “OFF” even–numbered Walsh Channels) is
verified to be < –27 dB for IS–95A/B and CDMA2000 1X with
respect to total CDMA Channel Power
.
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