R&S FSW-K7, User Manual

Page: 111 / 407

Configuration
R&S
®
FSW-K7
111 User Manual 1173.9240.02 ─ 23
Selected Trace ............................................................................................................ 111
Time Domain Zoom .....................................................................................................112
└ State ..............................................................................................................112
└ Start .............................................................................................................. 112
└ Length ...........................................................................................................112
└ Time per Division .......................................................................................... 112
Zero Phase Reference Position (PM Time Domain only) ........................................... 113
Phase Wrap On/Off (PM Time Domain only) .............................................................. 113
Squelch State
Activates the squelch function, i.e. if the signal falls below a defined threshold, the
demodulated data is automatically set to 0. This is useful, for example, to avoid
demodulation noise during transmission breaks.
Remote command:
[SENSe:]ADEMod<n>:SQUelch[:STATe]
on page 268
Squelch Level
Defines the level threshold below which the demodulated data is set to 0 if squelching
is enabled. The squelch level is an absolute value.
Remote command:
[SENSe:]ADEMod<n>:SQUelch:LEVel
on page 268
AF Coupling
Controls the automatic correction of the frequency offset and phase offset of the input
signal:
This function is only available for FM or PM time domain evaluations.
●
FM time evaluation
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
on page 267
Selected Trace
Defines the trace used to determine the results in the Result Summary.
Demodulation