Chapter 2 WCDMA Call Mode
System parameters
72 WCDMA Options Version 6.20
Mag Error
Peak [%]
The magnitude error peak value indicates the dif-
ference between the measured vector’s and the
ideal vector’s magnitude, also expressed as a per-
centage value.
Limit value range according to WCDMA specifi-
cations: ±50 %
Phase Error
RMS [deg]
The root mean squared phase error is a measure-
ment of the phase component of the vector error of
the UE’s transmit signal at the decision points.
Limit value range according to WCDMA specifi-
cations: ±10°
Phase Error
Peak [deg]
The peak phase error indicates the phase differ-
ence, i.e. the angle difference, between the signal
vector measured and the ideal signal vector.
Limit value range according to WCDMA specifi-
cations: ±45°
Frequency
Error [Hz]
Here the limit for the frequency error measurement
is set. The measurement results (with a pass/fail
verdict according to these limits) are shown on the
Basic menu.
Limit value range according to WCDMA specifi-
cations: ±200 Hz
Rho
The Rho is the waveform quality factor, a measure
of modulation accuracy. A value of 1 indicates per-
fect waveform quality.
Limit value according to WCDMA specifications:
0.9440
I/Q Offset
[dB]
The I/Q imbalance value is the determined ratio
between the I/Q offset vector and the average sig-
nal vector corrected by offset. It is expressed in dB.
Limit value according to WCDMA specifications:
–15 dB
I/Q
Imbalance
[dB]
The I/Q imbalance value indicates the ratio of the
power in the desired sideband carrier produced and
the undesired sideband carrier produced due to an
amplitude difference between the input signals to
the I/Q modulator, expressed in dB.
Limit value according to WCDMA specifications:
–25 dB
BER [%]
The Bit Error Rate indicates the number of errone-
ous bits transmitted or received in relation to the
total number of bits in a transmission. It is
expressed as a percentage. A BER of 0 would be
ideal.
Limit value according to WCDMA specifications:
0.001 %
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