R&S FSV-K7 Operating Manual page 202

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R&S FSV-K7/K7S
Remote command:
DISPlay[:WINDow<n>]:TRACe<t>:Y[:SCALe]:PDIVision
Reference Position ← AF Range ← Left
Determines the position of the reference line for the modulation depth or the phase
deviation (Analog Demodulation only) or frequency deviation on the y-axis of the dia-
gram. By default, this line is set to 0.
The position is entered as a percentage of the diagram height with 100 % correspond-
ing to the upper diagram border. The default setting is 50 % (diagram center) for the
display of the AM, FM, or PM signal, and 100 % (upper diagram border) for the AF
spectrum display of the AM, FM, or PM signal.
Remote command:
DISPlay[:WINDow<n>]:TRACe<t>:Y[:SCALe]:RPOSition
Reference Value ← AF Range ← Left
Determines the modulation depth or the phase deviation (Analog Demodulation only)
or the frequency deviation at the reference line of the y-axis. The reference value is set
separately for each display of the AM, FM, and PM signal and the AF spectrum of the
AM, FM, and PM signal.
●
AM/FM/PM signal display
The trace display takes individual frequency/phase offsets into account (in contrast,
the
quency/phase offset of the signal, and can therefore not be activated simultane-
ously).
Possible values: 0 and ± 10000 % (AM), 0 and ± 10 MHz (FM), 0 and ± 10000 rad
(PM).
●
AF spectrum display of the AM/FM/PM signal
In the default setting, the reference value defines the modulation depth or the
FM/PM deviation at the upper diagram border.
Possible values: 0 and 10000 % (AM), 0 and 10 MHz (FM), 0 and 10000 rad (PM).
Remote command:
DISPlay[:WINDow<n>]:TRACe<t>:Y[:SCALe]:RVALue
AF Coupling AC/DC ← AF Range ← Left
Controls the automatic correction of the frequency offset and phase offset of the input
signal:
(Note: This function is not available with the AF spectrum display of the FM or PM sig-
nal.)
●
FM signal display
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 signal display
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.
Operating Manual 1176.7561.02 ─ 06
AF Coupling AC/DC softkey permits automatic correction by the average fre-
FM Stereo Option R&S FSV–K7S
Instrument Functions FM Stereo (R&S FSV–K7S)
on page 112
on page 113
on page 114
202