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Spectrum Analyzer Mode Key Descriptions
Spectrum Analyzer Mode Functions
MARKER
A-SPAN
MARKER+
AUTO FFT
MARKER
+CF
MARKER
-4F
STEP
sets the start and stop frequencies to the values of the delta
markers. The start and stop frequencies will not be set if the
delta marker is off.
Front-Panel Key Access
@X&j
functions exactly like the
CONTINUS
FFT
softkey,
if the
spectrum analyzer is already in zero span. If the analyzer
is not in zero span it activates a marker which must be
placed on the signal that will have an FFT performed on
it and MARKER-+ AUTO FFT must be pressed again. The
resolution bandwidth setting must be wide enough to
include the displayed modulation signals. Refer to Chapter
5 “Measuring Amplitude Modulation Using the Fast Fourier
Transform” for more information.
Press FFT OFF to return the analyzer to normal operation
The analyzer state prior to pressing MARKER+ AUTO FFT
can be recalled from register 8.
Front-Panel Key Access
c-1
changes the analyzer settings so that the frequency at the
marker becomes the center frequency.
Front-Panel Key Access
(jj)
or (PEAK SEARCH]
changes the center-frequency step size to match the
value of the active marker. Press [FREQUENCY) then
CF STEP AUTO
MAN
to view the step size. If marker delta
is active, the step size will be set to the frequency difference
between the markers.
Front-Panel Key Access
[mj
6-90