R&S FSV-K7, Operating Manual

Page: 55 / 262

Analog Demodulation Option R&S FSV–K7
R&S
®
FSV-K7/K7S
55 Operating Manual 1176.7561.02 ─ 06
The following table shows the required demodulation bandwidth for an error less than
0.5 dB up to a maximum AF frequency.
deemphasis 25 µs 50 µs 75 µs 750 µs
max. AF frequency 25 kHz 12 kHz 8 kHz 800 Hz
required demodulation bandwidth ≥ 200 kHz ≥ 100 kHz ≥ 50 kHz ≥ 6.4 kHz
For higher AF frequencies the demodulation bandwidth must be increased.
Remote command:
[SENSe:]FILTer<n>:DEMPhasis[:STATe]
on page 150
[SENSe:]FILTer<n>:DEMPhasis:TCONstant
on page 151
SFM:
[SENSe:]SFM:<ChannelType>:FILTer:DEMPhasis:STATe
on page 239
[SENSe:]SFM:<ChannelType>:FILTer:DEMPhasis:TCONstant
on page 239
All AF Filter Off ← AF Filter
Disables all specified AF Filters.
Remote command:
[SENSe:]FILTer<n>:AOFF
on page 148
Demod Filter
By default, a flat demodulation filter is used in Analog Demodulation mode. However, in
order to optimize the settling behaviour of the filter, a Gaussian filter can be used
instead.
For details on sample rates, measurement times and trigger offsets for various demod-
ulation bandwidths when using a Gaussian filter, see
Chapter 2.1.3, "Sample Rate,
Measurement Time and Trigger Offset" , on page 13.
Remote command:
[SENSe:]BANDwidth:DEMod:TYPE
on page 148
2.2.7 Softkeys of the Sweep Menu – SWEEP Key (Analog Demodulation)
The following table shows all softkeys available in the "Sweep" menu in "Analog
Demodulation" mode ([SWEEP] key). It is possible that your instrument configuration
does not provide all softkeys. If a softkey is only available with a special option, model
or (measurement) mode, this information is delivered in the corresponding softkey
description.
Continuous Sweep ........................................................................................................ 56
Single Sweep ................................................................................................................ 56
Continue Single Sweep .................................................................................................56
Meas Time .....................................................................................................................56
Sweep Count .................................................................................................................56
Sweep Points ................................................................................................................ 57
Capture Mode ............................................................................................................... 57
Capture Time .................................................................................................................57
Demod Offset ................................................................................................................ 57
Softkeys of the Analog Demodulation option