3 IQ Analyzer (Basic) Mode
3.1 Complex Spectrum Measurement
Mkr->CF
Lets you set the instrument Center Frequency to the frequency of the selected
marker. The marker stays at this frequency, so it moves to the center of the display.
In DELTa marker mode, this function sets the center frequency to the X-Axis value of
the delta marker. When the frequency scale is in log mode, the center frequency is
not at the center of the display.
If the currently selected marker is not on when this control is pressed, it is turned on
at the center of the screen as a POSition (Normal) marker.
Remote Command Complex Spectrum:
:CALCulate:SPECtrum:MARKer[1]|2|…|12[:SET]:CENTer
Streaming:
:CALCulate:STReaming:MARKer[1]|2|…|12[:SET]:CENTer
Example
:CALC:SPEC:MARK4:CENT
Notes Sending this command selects the subopcoded marker
If specified marker is OFF, this command turns it on at the center of the screen as a POSition type
marker
Dependencies Not available (control is grayed-out) when X-Axis is the time domain
Couplings All the usual couplings associated with setting Center Frequency apply
Mkr->Ref Lvl
Lets you set the reference level to the amplitude value of the selected marker,
moving the marked point to the reference level (top line of the graticule). The
marker’s mode (POSition, DELTa) does not matter in this case. For example, if a
Delta marker is the selected marker, its amplitude is applied to the reference level. If
the reference marker is selected, its amplitude is applied to the reference level.
If the currently selected marker is not ON when this control is pressed, it is turned on
at the center of the screen as a POSition (Normal) marker, and its amplitude
applied to the reference level.
Remote
Command
Complex Spectrum:
:CALCulate:SPECtrum:MARKer[1]|2|…|12[:SET]:RLEVel
Streaming:
:CALCulate:STReaming:MARKer[1]|2|…|12[:SET]:RLEVel
Example
:CALC:SPEC:MARK4:RLEV
Notes Sending this command selects the subopcoded marker
If specified marker is OFF, this command turns it on at the center of the screen as a POSition type
marker
Couplings All the usual couplings associated with setting Reference Level apply
IQ Analyzer Mode User's &Programmer's Reference 226
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