Agilent Technologies E4406A VSA manual Spectrum—FFTLength, SENSe:SPECtrum:FFT:LENGth <integer>

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 OFFON01

[: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

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