R&S FSV-K7, Operating Manual, Page: 53 / 262

Analog Demodulation Option R&S FSV–K7
R&S
®
FSV-K7/K7S
53 Operating Manual 1176.7561.02 ─ 06
23 kHz filters are designed as 5th-order Butterworth filters (30 dB/octave). The 150
kHz filter is designed as 8th-order Butterworth filter (48 dB/octave).
The absolute low pass filters are active in the following demodulation bandwidth
range:
3 kHz: 6.4 kHz ≤ demodulation bandwidth ≤ 3 MHz
15 kHz: 50 kHz ≤ demodulation bandwidth ≤ 8 MHz
23 kHz 50 kHz ≤ demodulation bandwidth ≤ 18 MHz
150 kHz: 400 kHz ≤ demodulation bandwidth ≤ 8 MHz
Note: for FM stereo (K7S), all filters are active at all times, as the demodulation range is always 400 kHz
●
Relative low pass filters:
The filters (3 dB) can be selected in % of the demodulation bandwidth. The filters
are designed as 5th-order Butterworth filter (30 dB/octave) and active for all
demodulation bandwidths.
●
"None" deactivates the AF low pass filter. Default is "None".
Remote command:
[SENSe:]FILTer<n>:LPASs[:STATe]
on page 152
[SENSe:]FILTer<n>:LPASs:FREQuency[:ABSolute]
on page 152
[SENSe:]FILTer<n>:LPASs:FREQuency:RELative
on page 153
SFM:
[SENSe:]SFM:<ChannelType>:FILTer:LPASs:STATe
on page 240
[SENSe:]SFM:<ChannelType>:FILTer:LPASs:FREQuency
on page 241
Weighting ← AF Filter
Opens the "Weighting" selection list to select the weighting AF filter.
None ← Weighting ← AF Filter
Deactivates the weighting filter. This is the default setting.
Remote command:
[SENSe:]FILTer<n>:HPASs[:STATe]
on page 151
CCITT ← Weighting ← AF Filter
Switches on a CCITT P.53 weighting filter. The weighting filter is active in the following
demodulation bandwidth range:
20 kHz ≤ demodulation bandwidth ≤ 3 MHz
For FM stereo (K7S), the filter is active at all times, as the demodulation range is
always 400 kHz.
Remote command:
[SENSe:]FILTer<n>:CCIT
on page 149
SFM:
[SENSe:]SFM:<ChannelType>:FILTer:CCITt:STATe
on page 237
Softkeys of the Analog Demodulation option