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Chapter 5 353
Language Reference
SENSe Subsystem
Spectrum—FFT Length
[:SENSe]:SPECtrum:FFT:LENGth <integer>
[:SENSe]:SPECtrum:FFT:LENGth?
Set the FFT length. This value is only used if length control is set to
manual. The value must be greater than or equal to the window length
value. Any amount greater than the window length is implemented by
zero-padding. This is an advanced control that normally does not need
to be changed.
Factory Preset
and *RST: 706
Range: min, depends on the current setting of the spectrum
window length
max, 1,048,576
Remarks: To use this command, the appropriate mode should be
selected with INSTrument:SELect.
History: Short form changed from LENgth to LENGth, A.03.00
Spectrum—FFT Length Auto
[:SENSe]:SPECtrum:FFT:LENGth:AUTO OFF|ON|0|1
[:SENSe]:SPECtrum:FFT:LENGth:AUTO?
Select auto or manual control of the FFT and window lengths.
This is an advanced control that normally does not need to be changed.
On - the window lengths are coupled to resolution bandwidth,
window type (FFT), pre-FFT bandwidth (sample rate) and
SENSe:SPECtrum:FFT:RBWPoints.
Off - lets you set SENSe:SPECtrum:FFT:LENGth and
SENSe:SPECtrum:FFT:WINDow:LENGth.
Factory Preset
and *RST: ON
Remarks: To use this command, the appropriate mode should be
selected with INSTrument:SELect.
History: Short form changed from LENgth to LENGth, A.03.00