HP 8920A - Speaker ALC; Speaker Vol; TX Freq Error; TX Frequency

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Chapter 5, AF Analyzer Screen
Block Diagram
Speaker ALC
Speaker Automatic Level Control enables/disables the ALC function for the
instrument’s internal speaker. When
On is selected, the speaker volume is
independent of the signal level being measured. When
Off is selected, the speaker
volume is dependent on the signal level being measured.
Speaker Vol
Speaker Volume enables/disables the instrument’s internal speaker. When Pot is
selected, the VOLUME control knob operates normally. When
Off is selected,
the speaker is disconnected.
TX Freq Error/ TX Frequency
This measurement area is used to display transmitter frequency error or
transmitter frequency. The type of measurement displayed depends on the
Tune
Mode
setting in the TX TEST, DUPLEX TEST, or RF ANALYZER screen.
See Also
"Displaying Measurements" on page 57