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Chapter 4 83
CDMA Measurements - Screens and Control Fields
Channel Power Measurements Channel Power Measurements
Channel Power Measurements
Chan Pwr
Channel power is the absolute power level of the RF signal in a
1.23 MHz bandwidth centered around the RF channel or tune
frequency setting. This measurement must be calibrated using the
Chan Pwr Cal field each time the tune frequency is changed. Refer to
the HP 8935 CDMA Base Station Tests Applications Guide for more
information about channel power measurements.
ADC FS
ADC FS is displayed when channel power is measured. ADC FS
indicates how close the measured power level is to the maximum
allowed input level at the RF IN/OUT port for a particular Gain setting
(on the CDMA ANALYZER screen). Changes to ADC FS can be made
by altering the Gain field setting and by altering the signal level into
the RF IN/OUT port. ADC FS should be between −1.0 and −10 dB when
the Gain field is set to Auto
, and can be manually set up to −0.5 dB
when set to Hold. The measurement will be aborted if ADC FS goes
above −0.5 dB. Measurement accuracy may be degraded if ADC FS goes
below −10 dB.
Screens on which this measurement is displayed.
• CDMA ANALYZER
• CDMA GENERATOR
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