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Spectrum Analyzer Mode Key Descriptions
Spectrum Analyzer Mode Functions
MARKER
-START
MARKER
-&TOP
MARKER
ALL OFF
MARKER
AMPTD
changes the start frequency so that it is equal to the
frequency of the active marker. This moves the active
marker to the left edge of the display.
Front-Panel Key Access
@C?i?7]
changes the stop frequency so that it is equal to the
frequency of the active marker. This moves the active
marker to the right edge of the display.
Front-Panel Key Access
Ijj]
turns off
alI
of the markers, including markers used for
marker track and demodulation. Marker annotation is also
removed.
Front-Panel Key Access
IFV1KR)
keeps the active marker at the requested amplitude on
the screen. Once activated, the marker remains at the
amplitude selected by the step keys, knob, or numeric
keypad, even if the signal frequency is changed. Pressing
any digit, 0 through 9, on the numeric keypad brings up
the selected units terminator menu. The marker will be
placed on the signal furthest left at that amplitude. If no
signal exists at that amplitude, it will be placed above the
highest signal amplitude (or below the lowest trace element
if it is below all trace elements). When marker delta is
active in addition to marker amplitude, the behavior of the
active marker is useful for measuring signal bandwidths. For
example, place a marker 20
dB
below the peak of a signal,
press MARKER A , MARKER AMPTD The marker readout
shows the 20
dB
bandwidth.
Front-Panel Key Access
LMKR)
6-92