Automatic Settings - R&S FSW-K7 User Manual

Analog demodulation measurement option
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®
R&S
FSW-K7
If DC is selected, the absolute frequency is displayed, i.e. an input signal with an
offset relative to the center frequency is not displayed symmetrically with respect to
the zero line.
If AC is selected, the frequency offset is automatically corrected, i.e. the trace is
always symmetric with respect to the zero line.
PM time evaluation
If DC is selected, the phase runs according to the existing frequency offset. In addi-
tion, the DC signal contains a phase offset of ± π.
If AC is selected, the frequency offset and phase offset are automatically corrected,
i.e. the trace is always symmetric with respect to the zero line.
Remote command:
[SENSe:]ADEMod<n>:AF:COUPling
AC Cutoff Frequency
Defines the cutoff frequency for the AC highpass filter (for AC coupling only, see
Coupling).
Note that the audio frequency (AF) filter settings used for demodulation also apply to
the online output.
(See
Remote command:
OUTPut:ADEMod[:ONLine]:AF[:CFRequency]
Phones Output
In addition to sending the output to the IF/VIDEO/DEMOD connector (on the rear panel
of the R&S FSW), it can also be output to headphones connected on the front panel
(PHONES connector).
CAUTION! Risk of hearing damage . To protect your hearing, make sure that the vol-
ume setting is not too high before putting on the headphones.
Note: If you do not hear output on the connected headphones despite having enabled
both general online demodulation output
on page 128) and "Phones Output", adjust the volume setting using the rotary knob on
the front panel.
Remote command:
OUTPut:ADEMod[:ONLine]:PHONes

5.9 Automatic Settings

Access: AUTO SET
Some settings can be adjusted by the R&S FSW automatically according to the current
measurement settings.
MSRA/MSRT operating mode
In MSRA/MSRT operating mode, settings related to data acquisition cannot be adjus-
ted for Analog Demodulation applications.
User Manual 1173.9240.02 ─ 23
Chapter 5.7.3, "AF
Filter",
on page 267
on page 116)
on page 241
(see"Online Demodulation Output State"
on page 241
Configuration

Automatic Settings

AF
129

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