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Chapter 5 123
Analog Measurements - Screens and Control Fields
AF Anl In AF Cnt Gate
Control Fields for Analog Measurements
AF Anl In
The audio frequency analyzer input selects the input for the analyzer.
When selected, this field displays a list of choices.
Signals can be analyzed from three different types of inputs:
• The output of the AM, FM, or SSB demodulators.
• The AUDIO IN, ANALOG MODULATION IN, and AUDIO OUT
connectors.
• The signal present at the AM or FM modulators for the RF
generator.
Operating Considerations
Changing this field changes the audio measurement (in the upper-right
of the screen) to correspond to the selected signal.
See "Selecting the Oscilloscope’s Input" on page 72 for more
information.
Screens on which this field is displayed
AF ANALYZER
AF Cnt Gate
Audio frequency counter gate specifies how long the AF counter
samples the signal before displaying the frequency. Specifying a shorter
gate time may enable you to see frequency fluctuations that might not
be seen using a longer gate time.
Screens on which this field is displayed
AF ANALYZER
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