3 Short-Range Comms & IoT Mode
3.11 IQ Waveform Measurement
the grayed-out control, a warning message “Feature only available with Signal Input RF” appears
If you try to set Mixing Mode via SCPI when disabled, a message -221,"Settings conflict; Feature only
available with signal input RF" is returned
Preset
NORMal
State Saved Yes
Range
NORMal|ALTernate
Invert Spectrum
When set to NORMal, the Spectrum toggle has no effect on the measurement.
When set to INVert, the I/Q data is conjugated, which inverts the spectrum. This
parameter also affects the results of the :MEASure, :READ, and :FETCh queries for
WAVeform4 data. If set to INVert, the I/Q data returned is conjugated, otherwise the
data is raw I/Q.
Remote Command
[:SENSe]:WAVeform:SPECtrum NORMal | INVert
[:SENSe]:WAVeform:SPECtrum?
Example
:WAV:SPEC INVert
Preset
NORMAL
State Saved Saved in instrument state
Power Reference Plane
Allows you to increase the power by 3dB for Baseband I+jQ measurements. Options
are:
Menu SCPI
Baseband
BASeband
RF
RF
Remote Command For valid <meas> values, see "Valid Measurement Keywords" on page 1618
[:SENSe]:<meas>:POWer:IQ:REFerence:PLANe RF | BASeband
[:SENSe]:<meas>:POWer:IQ:REFerence:PLANe?
Example (Complex Spectrum measurement)
SPEC:POW:IQ:REF:PLAN BAS
SPEC:POW:IQ:REF:PLAN?
Dependencies Only available if the I/Q input exists
Enabled only when the input is I/Q and I/Q Path is I+jQ
Disabled for all other conditions
Preset
RF
State Saved Saved in instrument state
Short Range Comms & IoT Mode User's &Programmer's Reference 1617
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