Keysight N9010B - Low SNR Enhancement; EVM Normalization Reference

3 VMA Mode
3.1 Digital Demod Measurement
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Magnitude error
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FSK measured time and FSK measured spectrum (FSK measurements)
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FSK reference time and FSK reference spectrum (FSK measurements)
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FSK error time and FSK error spectrum (FSK measurements)
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Magnitude error (carrier) (FSK measurements)
Remote
Command
:CALCulate:DDEMod:SEGMent1|…|6:NORMalize OFF | ON | 0 | 1
:CALCulate:DDEMod:SEGMent1|…|6:NORMalize?
Example
:CALC:DDEM:SEGM1:NORM ON
:CALC:DDEM:SEGM1:NORM?
Preset
ON
State Saved Yes
Annunciation When this is on, ideal state positions are identified by graphics on the constellation diagram
Backwards
Compatibility
SCPI
:CALCulate:DDEMod:NORMalize
Low SNR Enhancement
Enhances the ability of the demodulator to lock on to signals with low SNR. This
process reduces the frequency lock range and provides additional filtering. This
filtering enables the demodulator to lock in the presence of more. To compensate
for the smaller frequency lock range, the frequency estimate is tracked from
measurement to measurement. An exponential average is used and the output of
this average becomes the starting point for the next frequency estimate for the next
measurement.
Remote Command
[:SENSe]:DDEMod:SEGMent1|…|6:LSNR OFF | ON | 0 | 1
[:SENSe]:DDEMod:SEGMent1|…|6:LSNR?
Example
:DDEM:SEGM1:LSNR ON
:DDEM:SEGM1:LSNR?
Preset
OFF
State Saved Yes
Backwards Compatibility
SCPI
[:SENSe]:DDEMod:LSNR
EVM Normalization Reference
Sets the normalization value for certain error summary metrics.
Vector Modulation Analyzer Mode User's &Programmer's Reference 348