HP 8590 E-Series User Manual page 246

sets the start and stop frequencies to the values of the delta markers. The start
MARKER
and stop frequencies will not be set if the delta marker is off.
A-SPAN
Front-Panel Key Access: [YZGY]
functions exactly like the CONTINUS FFT softkey, if the spectrum analyzer is
AUTO FFT
already in zero span. If the spectrum 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 4 "Measuring Amplitude Modulation Using the Fast
Fourier Transform" for more information.
Press FFT OFF to return the spectrum analyzer to normal operation. The
spectrum analyzer state prior to pressing MARKER -+ AUTO FFT can be recalled
from register 8.
Front-Panel Key Access: [m)
changes the spectrum analyzer settings so that the frequency at the marker
MARKER
becomes the center frequency.
Front-Panel Key Access:
changes the center-frequency step size to match the value of the active
MARKER
marker. Press
marker delta is active, the step size will be set to the frequency difference
between the markers.
Front-Panel Key Access: [?XYG]
changes the FFT stop frequency to whatever the current value of the FFT
MARKER-+
marker frequency is, within the limitations of the available sweep times. This
FFT STOP
puts the marker on the right side of the graticule.
Front-Panel Key Access: l'j'j]
changes the frequency at the middle of the FFT display to whatever the
MARKER-t
current value of the FFT marker frequency is, within the limitations of the
MID SCRN
available sweep times. This puts the marker in the middle of the graticule.
When using the FFT function the MARKER --+ MID SCRN softkey replaces the
MARKER + CF softkey in the
Front-Panel Key Access:
moves the active marker to the minimum detected amplitude value.
MARKER--+
Front-Panel Key Access: @iiZGj
MINIMUM
finds and displays the frequency and amplitude differences between the
MARKER
highest and lowest trace points. Pressing MARKER -+PK-PK performs the
routine similar to pressing the following keys:
MARKER-, MINIMUM.
Front-Panel Key Access: ljMKR-]
changes the spectrum analyzer settings so that the amplitude at the active
MARKER
marker becomes the reference level.
Front-Panel Key Access: ljj)
changes the start frequency so that it is equal to the frequency of the active
MARKER
marker. This moves the active marker to the left edge of the display.
Front-Panel Key Access: @ZGY]
or
then CF STEP AUTO MAN to view the step size. If
and [ml menus.
or
MARKER A , and
Key Descriptions 7-53