Technical data

Chapter 7 213
CDMA Analyzer
Metrics Provided by the CDMA Tx Analyzer Measurement
CDMA Analyzer
indicating that all of the power is being transmitted correctly.
Carrier Feedthrough
Carrier Feedthrough is a result of the RF carrier signal feeding through the I/Q
modulator and riding on the output circuitry without being modulated. Carrier
Feedthrough is a common cause of bad Rho measurements.
Noise Floor
Noise Floor is the average power of all the inactive channels.
Pilot Power
Pilot Power is the total power in the Pilot code channel, expressed in dBm. The
transmit power of the Pilot Channel signal for a given base station is normally
constant.
Delta Page Power
Delta Page Power is the amplitude difference between the Paging Channel and Pilot
Channel, expressed in dB. The transmit power of the Paging Channel is constant and
can be set at a value relative to the Pilot Power. A common value is -4 dB relative to
the Pilot.
Delta Sync Power
Delta Sync Power is the amplitude difference between the Sync Channel and Pilot
Channel, expressed in dB. The transmit power of the Sync Channel is constant and
may be set at a value relative to the Pilot Power. A common value is -10 dB relative
to the Pilot.
Delta Quick Page Channel Power
Delta Quick Page Channel (QPCH) Power is the amplitude difference between the
Quick Page Channel and Pilot Channel, expressed in dB. The QPCH is a bursted
channel and is not on all the time. In order to capture the level of the QPCH, the
statistic measures and holds the peak level of the QPCH. Until a QPCH has been
measured, the value will be dashes. When “on”, the level of the QPCH is constant
and is set at a value relative to the Pilot Power. The QPCH digital gain level can be
set to 2, 1, 0, -1, -2, -3, -4, and -5 dB relative to the Pilot.