330 Chapter5
Language Reference
SENSe Subsystem
Spectrum—Pre-FFT BW Filter Type
[:SENSe]:SPECtrum:BANDwidth|BWIDth:PFFT:TYPE FLAT|GAUSsian
[:SENSe]:SPECtrum:BANDwidth|BWIDth:PFFT:TYPE?
Select the type of pre-FFT filter that is used. This is an advanced
control that normally does not need to be changed.
Flat top- a filter with a flat amplitude response, which provides the
best amplitude accuracy.
Gaussian - a filter with Gaussian characteristics, which provides the
best pulse response.
Factory Preset
and *RST: Flat top
Remarks: To use this command, the appropriate mode should be
selected with INSTrument:SELect.
Spectrum—Resolution BW
[:SENSe]:SPECtrum:BANDwidth|BWIDth[:RESolution] <freq>
[:SENSe]:SPECtrum:BANDwidth|BWIDth[:RESolution]?
Set the resolution bandwidth for the FFT. This is the bandwidth used
for resolving the FFT measurement. It is not the pre-FFT bandwidth.
This value is ignored if the function is auto-coupled.
Frequency span, resolution bandwidth, and the pre-FFT bandwidth
settings are normally coupled. If you are not auto-coupled, there can be
combinations of these settings that are not valid.
Factory Preset
and *RST: 20.0 kHz
250.0 Hz, for iDEN mode
Range: 0.10 Hz to 3.0 MHz
Remarks: To use this command, the appropriate mode should be
selected with INSTrument:SELect.
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