3 VMA Mode
3.1 Digital Demod Measurement
Range Auto/Man
The Auto setting for Range causes the range to be set based on the Y Scale settings.
When Range is Auto, the I & Q Range are set based on the top of the Y Scale when
the Y scale is in dB units (for example, power), or to the max(abs(top), abs(bottom))
when the Y scale reference is not at the top of the screen.
Not all measurements support Range Auto/Man. If Auto is not supported in the
current measurement, this control is grayed-out, displaying Man, and MAN is
returned to a SCPI query, but this does not change the Auto/Man setting for Range.
When you switch to a measurement that supports Auto, it goes back to Auto if it was
previously in Auto mode.
Remote Command
[:SENSe]:VOLTage:IQ:RANGe:AUTO OFF | ON | 0 | 1
[:SENSe]:VOLTage:IQ:RANGe:AUTO?
Example Put the I Range and Q Range in manual
:VOLT:IQ:RANG:AUTO OFF
:VOLT:IQ:RANG:AUTO?
Dependencies If Auto is not supported, sending the SCPI command generates an error
Couplings When in Auto, both I Range and Q Range are set to the same value, computed as follows:
Maximum absolute value is computed for the Y Scale. The top and bottom of the graph are computed
based on Ref Value, Scale/Div, and Ref Position. Formula: YMax = max(abs(top), abs(bottom))
The I Range and Q Range are then set to YMax
Preset
ON
State Saved Saved in instrument state
Annotation When in Man, the Range annotation is preceded by "#"
This is an alternate form of the command to match the POWer form of the I Range
and Q Range SCPI.
Remote
Command
[:SENSe]:POWer:IQ:RANGe:AUTO OFF | ON | 0 | 1
[:SENSe]:POWer:IQ:RANGe:AUTO?
Example Put the I Range and Q Range in manual
:POW:IQ:RANG:AUTO OFF
:POW:IQ:RANG:AUTO?
Notes :POW:IQ:RANG:AUTO is an alternate form of :VOLT:IQ:RANG:AUTO, to maintain consistency
with I Range and Q Range, which support both the POWer and VOLTage forms of the command
Preset
ON
Range Auto | Man
Vector Modulation Analyzer Mode User's &Programmer's Reference 250
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