Spectrum Analyzer Mode Key Descriptions
Spectrum Analyzer Mode Functions
MARKER -START
MARKER
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.
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.
turns off alI of the markers, including markers used for marker track and demodulation. Marker annotation is also removed.
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.
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