R&S FSL CDMA2000 BTS Analyzer (Option K82)
1300.2519.12 4.331 E-11
Only the channels detected as being active are used to generate the ideal reference signal. If a
c
hannel is not detected as being active, e.g. on account of low power, the difference between
the test signal and the reference signal and the composite EVM is therefore very large (see Fig.
4-37). Distortions also occur if unassigned codes are wrongly given the status of "active
channel". To obtain reliable measurement results, select an adequate channel threshold via the
Inactive Channel Threshold field.
Fig. 4-37: Composite EVM display for the case of all the channels contained in the signal being
detected as active.
Remote: CALC1:FEED "XTIM:CDP:MACC"
Peak Code Domain Error
Selects the Peak Code Domain Error result display.
In this result display, the error between the test signal and the ideally generated reference signal
is projected to the base spreading factor. The unit of the y–axis is dB. The base spreading factor
is selected by the Base SF.
The result display consists of the numeric value per PCG for the peak code domain error. You
can set the number of PCGs by the Capture Length. Subsequently, the Peak Code Domain
Error result display takes the whole signal into account over the entire period of observation. The
selected PCG (Power Control Group) is marked in red.
Only the channels detected as being active are used to generate the ideal reference signal. If a
channel is not detected as being active, e.g. on account of low power, the difference between
the test signal and the reference signal is very large. The result display therefore shows a peak
code domain error that is too high (see Fig. 4-38). Distortions also occur if unassigned codes are
wrongly given the status of "active channel". To obtain reliable measurement results, select an
adequate channel threshold via the Inactive Channel Threshold field.
Fig. 4-38: Peak code domain error for the case of all the channels contained in the signal being
detected as active
Remote: CALC:FEED "XTIM:CDP:ERR:PCD"
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