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1087
Meas Setup
750 µs
Sets the De-emphasis time constant to 750 µsec.
PM
Pressing this key, when it is not selected, selects and activates the PM demodulation function. Pressing it
a second time branches to the PM Demod menu where PM demodulation settings can be adjusted.
Channel BW (PM Demod)
Sets the RBW setting used by the hardware during the demodulation period in nonzero spans. 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 test set’s RBW & VBW filters are used for the demodulation; thus, the Channel BW
(and RBW filter type) will match those of the test set. This allows gap-free listening. The Channel BW
key is grayed out and the value displayed on the key matches the current RBW of the test set. Upon
leaving zero span, the previous setting of Channel BW and the flattop filter type are restored.
Readback 75 μs
Initial S/W Revision Prior to A.02.00
Key Path
Meas Setup, Analog Demod Tune&Listen, FM, De-emphasis
Example DEM:FM:DEEM US750
Readback 750 μs
Initial S/W Revision Prior to A.02.00
Key Path
Meas Setup, Analog Demod Tune&Listen
Example DEM PM turns Phase demodulation function ON
State Saved Saved in instrument state.
Initial S/W Revision Prior to A.02.00
Key Path
Meas Setup, Analog Demod Tune&Listen, M
Remote Command [:SENSe]:DEMod:PM:BANDwidth:CHANnel <freq>
[:SENSe]:DEMod:PM:BANDwidth:CHANnel?
Example DEM:PM:BAND:CHAN 200 MHz
Notes This key / command is grayed out in zero span
Dependencies Unavailable in zero span.