R&S FSH Digital Modulation Analyzer
Measurements on GSM Signals
Operating Manual 1173.6275.12 - 30 256
Slot EVM (8PSK modulated slots only)
Shows the Error Vector Magnitude (EVM) of the analyzed slot in %.
The EVM is defined as the ratio of the mean error power of the signal to the power of
an ideal reference signal.
Peak EVM (8PSK modulated slots only)
The Peak EVM is the peak value of the EVM of all symbols in the useful part
(excluding tail symbols) of the analyzed slot. The RMS EVM is the root mean square
value of the EVM of all symbols in the useful part (excluding tail symbols) of the
analyzed slot.
I/Q Offset (8PSK modulated slots only)
Shows the DC offset of the analyzed time slot in %.
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