3 Spectrum Analyzer Mode
3.2 Swept SA Measurement
zero span, the previous setting of Channel BW and the flattop filter type are
restored.
Remote Command
[:SENSe]:DEMod:FM:BANDwidth:CHANnel <freq>
[:SENSe]:DEMod:FM:BANDwidth:CHANnel?
Example
:DEM:FM:BAND:CHAN 200 MHz
Notes Grayed-out in Zero Span
Dependencies Unavailable in Zero Span
Couplings In Zero Span only, the value is set equal to the instrument’s current RBW value and it displays that
value on the control, but the control is grayed-out
Preset 150 kHz
State Saved Saved in instrument state
Min 390 Hz
Max 8 MHz
PM Channel BW
Sets the RBW setting used by the hardware during the demodulation period in
nonzero spans for the Tune & Listen function. Note that this is a separate parameter
only for the demodulation function and does not affect the RBW setting in the BW
menu which is used during the normal sweep. The flat top filter type must be used
during the demodulation period. A 5 kHz Video Bandwidth filter is used.
In Zero Span, the instrument’s RBW & VBW filters are used for the demodulation;
thus, the Channel BW (and RBW filter type) will match those of the instrument. This
allows gap-free listening. The Channel BW control is grayed-out and the value
displayed on the control matches the current RBW of the instrument. Upon leaving
zero span, the previous setting of Channel BW and the flattop filter type are
restored.
Remote Command
[:SENSe]:DEMod:PM:BANDwidth:CHANnel <freq>
[:SENSe]:DEMod:PM:BANDwidth:CHANnel?
Example
:DEM:PM:BAND:CHAN 200 MHz
Notes Grayed-out in Zero Span
Dependencies Unavailable in Zero Span
Couplings In Zero Span only, the value is set equal to the instrument’s current RBW value and it displays that
value on the control, but the control is grayed-out
Preset 100 kHz
State Saved Saved in instrument state
Min 390 Hz
Max 8 MHz
Spectrum Analyzer Mode User's &Programmer's Reference 431
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