Freedom R8100 SERIES, Руководство оператора

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3 dB Marker
Selects the 3 dB marker with the following horizontal menu choices:
Off – Function is off
Frequency – Places a marker above and below center frequency where the signal is -3 dB below the peak
amplitude measured at center frequency. The upper and lower frequencies are shown on the display.
Delta – Places a marker above and below center frequency where the signal is -3 dB below the peak
amplitude measured at center frequency. The difference between these two frequencies is shown on the
display.
Marker Mode
Provides display marker control via a horizontal soft key menu. Markers can be turned off or on with a
choice of numeric readout for the signal measurements. “Absolute” provides actual peak readings while
“Delta” measures the relative difference of both power and frequency between the markers. Note:
Depending on the installed options up to 4 markers can be enabled and selected for positioning while in
Instrument Mode.
Find Peak
Moves the cursor to the highest signal peak in the display window and provides a numeric readout of the
amplitude and frequency.
Toggle Marker
Cycles through the available markers to select the active one (yellow) for positional adjustment on the
display. The active marker is moved using the Left/Right (◄►) cursor control buttons.
Center Marker
Centers the operating frequency and display of the R8100 Spectrum Analyzer around the frequency of the
active marker.
Center Peak
Centers the operating frequency and display of the R8100 Spectrum Analyzer around the highest peak
signal within the display range.
Demod At Marker
When the Marker Mode is Absolute, this function demodulates the carrier and provides audio for the
signal at the marker location with the following horizontal menu choices (see Figure 2.2.4.1-2):
Off – Function is off.
Single – Provides a one-time demodulation of the carrier signal located at the marker position for a quick
listen at the marker frequency. Moving the marker or changing the monitor frequency, mode, or Display
Zone selection switches the Demod At Marker function Off.
Continuous – Continuous mode allows users to move the selected marker to demodulate carriers across
the entire displayed spectrum. On full-screen instruments, the user can setup several markers on various