R&S FSV-K7 Operating Manual page 33

®
R&S FSV-K7/K7S
Remote command:
[SENSe:]FILTer<n>:CCIR[:UNWeighted][:STATe]
SFM:
[SENSe:]SFM:<ChannelType>:FILTer:CCIR[:UNWeighted][:STATe]
on page 238
CCIR Weighted ← Weighting ← AF Filter ← AM
Switches on the CCIR weighted filter. The weighting filter is active in the following
demodulation bandwidth range:
100 kHz ≤ demodulation bandwidth ≤ 3.0 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>:CCIR:WEIGhted[:STATe]
SFM:
[SENSe:]SFM:<ChannelType>:FILTer:CCIR:WEIGhted[:STATe]
A Weighted ← Weighting ← AF Filter ← AM
Switches on the A weighted filter. The weighting filter is active in the following demodu-
lation bandwidth range:
100 kHz ≤ demodulation bandwidth ≤ 800 kHz
Remote command:
[SENSe:]FILTer<n>:AWEighted[:STATe]
SFM:
[SENSe:]SFM:<ChannelType>:FILTer:AWEighted[:STATe]
Deemphasis ← AF Filter ← AM
Opens the "Deemphasis" selection list to switch on a deemphasis with the given time
constant.
The deemphasis is active in the following demodulation bandwidth range:
Note: For FM stereo measurements (K7S), the demodulation bandwidth is always 400
kHz, thus the deemphasis is always active.
25 µs:
50 µs:
75 µs:
750 µs:
The following table shows the required demodulation bandwidth for an error less than
0.5 dB up to a maximum AF frequency.
deemphasis
max. AF frequency
required demodulation bandwidth
Operating Manual 1176.7561.02 ─ 06
Analog Demodulation Option R&S FSV–K7
Softkeys of the Analog Demodulation option
25 kHz ≤ demodulation bandwidth ≤ 40 MHz
6.4 kHz ≤ demodulation bandwidth ≤ 18 MHz
6.4 kHz ≤ demodulation bandwidth ≤ 18 MHz
800 Hz ≤ demodulation bandwidth ≤ 3 MHz
25 µs
25 kHz
≥ 200 kHz
on page 150
on page 150
on page 149
on page 237
50 µs 75 µs
12 kHz 8 kHz
≥ 100 kHz ≥ 50 kHz
on page 238
750 µs
800 Hz
≥ 6.4 kHz
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