Keysight PXA X Series - De-Emphasis (FM Demod Only)

10 Monitor Spectrum Measurement
Meas Setup
De-emphasis (FM Demod Only)
The De-emphasis setting controls a single-pole filter (6 dB/octave roll off), usually to counter intentional
pre-emphasis in the transmitter. When De-emphasis state is OFF the hardware digital filter is bypassed,
otherwise the setting is applied.
Key Path
Meas Setup, Analog Demod, FM
Remote Command
[:SENSe]:MONitor:DEMod:FM:DEEMphasis OFF | US25 | US50 | US75 | US750
[:SENSe]:MONitor:DEMod:FM:DEEMphasis?
Example MON:DEM:FM:DEEM US75
MON:DEM:FM:DEEM?
Notes Only available in FM. Grayed out for AM and PM.
Preset US75
State Saved Saved in instrument state
Range OFF|US25|US50|US75|US750
Initial S/W Revision A.13.00
Off
This setting bypasses the De-emphasis filter.
Key Path
Meas Setup, Analog Demod Tune&Listen, FM, De-emphasis
Example
MON:DEM:FM:DEEM OFF
Readback Off
Initial S/W Revision A.13.00
25 µs
Sets the De-emphasis time constant to 25µs.
Key Path
Meas Setup, Analog Demod Tune&Listen, FM, De-emphasis
Example
MON:DEM:FM:DEEM US25
Readback
25 ∝s
Initial S/W Revision A.13.00
50 µs
Sets the De-emphasis time constant to 50 µs.
Key Path
Meas Setup, Analog Demod Tune&Listen, FM, De-emphasis
Example
MON:DEM:FM:DEEM US50
806 EMI Receiver Mode Reference