82 N9912A FieldFox User’s Guide
Then Mkr->Tune Freq to change the Tune Frequency to that of the marker.
Tip To improve sound quality, try increasing power by reducing the Attenuation
setting and, if available, turn ON the Preamplifier. Learn how on page 75.
Listen Time
While Tune & Listen is actively demodulating a signal, the SA does not sweep
and update the display. Listen Time sets the amount of time that the FieldFox
demodulates, then stops to perform a single sweep and update the display, then
again demodulates.
To select Listen Time:
Press Meas Setup 4
Then Listen Time
Enter a value using the numeric keypad, ▲|▼ arrows, or the rotary knob.
Then select a multiplier key. Learn about multiplier abbreviations on page 19.
Volume Control
To increase or decrease the Volume of the demodulated signal:
Press Meas Setup 4
Then Volume
Enter a value in percent between 0 and 100 (loudest) using the numeric
keypad, ▲|▼ arrows, or the rotary knob.
Volume can also be changed and easily muted from the System menu. Learn
more on page 160.
Demod ON and OFF
To quickly stop the audio demodulation and perform only the normal SA sweeps,
select the following:
Press Meas Setup 4
Then Demod ON OFF
Independent Source/Tracking Generator
A tracking generator, a popular option with Spectrum Analyzers, is a source
which always tracks the SA receiver.
Like a traditional tracking generator, the Independent Source feature can set the
internal FieldFox source to track the SA receiver frequency range. It can also set
the internal source to a CW frequency that is independent of the SA frequency.
Independent Source can be enabled ONLY when the FieldFox is in SA mode.
To view the internal source, you must connect a cable or device between the RF
OUT connector and the RF IN connector.
How to make Independent Source Settings
Press Measure 1.
Then Source
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