R&S FSL CDMA2000 BTS Analyzer (Option K82)
1300.2519.12 4.327 E-11
Global Results
Under Global Results, the measurement results that concern the total signal (that is, all
channels) for the entire period of observation (that is, all PCGs) are displayed:
– Carrier Frequency Error
Specifies the frequency error referred to the set center frequency of the R&S FSL. The absolute
frequency error is the sum of the frequency error of the R&S FSL and that of the device under
test. Frequency differences between the transmitter and receiver of more than 1.0 kHz impair
synchronization of the Code Domain Power measurement. If at all possible, the transmitter and
the receiver should be synchronized (refer to chapter "Advanced Measurement Examples").
The frequency error is available in the units both Hz and ppm referred to the carrier frequency.
The value of the Carrier Frequency Error in ppm is only displayed in full screen mode.
– Chip Rate Error
Specifies the chip rate error (1.2288 Mcps) in ppm. A large chip rate error results in symbol
errors and, consequently, possibly in the Code Domain Power measurement not being able to
perform synchronization. This measurement result is also valid if the R&S FSL could not
synchronize to the CDMA2000 signal.
– Trigger to Frame
Reflects the time offset from the beginning of the recorded signal section to the start of the first
PCG. In case of triggered data recording, this corresponds to the timing offset:
frame trigger (+ trigger offset) – start of first PCG
If it was not possible to synchronize the R&S FSL to the CDMA2000 signal, this measurement
result is meaningless. If the Free Run trigger mode is selected, dashes are displayed.
The Trigger to Frame value is only displayed in full screen mode.
– Active Channels
Specifies the number of active channels found in the signal. Detected data channels as well as
special channels are regarded as active. With transmit diversity, the result applies to the
selected antenna (refer to Antenna Diversity). No value is displayed in both the Min and Max
columns.
PCG
Under PCG, the measurement results that concern the total signal (that is, all channels) for the
selected power control group (Capture Length) are displayed:
– Total Power
Shows the total power of the signal.
– Pilot Power
Shows the power of the pilot channel. If antenna 2 is selected, the power of the F-TDPICH is
displayed, in all other cases that of the F-PICH (for details refer to Antenna Diversity).
The value for the Pilot Power is only displayed in full screen mode.
– RHO
Shows the quality parameter RHO. According to the CDMA2000 standard, RHO is the
normalized, correlated power between the measured and the ideally generated reference
signal. When RHO is measured, the CDMA2000 standard requires that only the pilot channel
be supplied.
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