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Chapter 5 151
Analog Measurements - Screens and Control Fields
Settling Span
Settling
This field selects the settling time for making AF measurements. Lower
frequency signals require additional settling time (Slow). Higher
frequency measurements require less settling time (Fast).
Operating Considerations
Use Slow for ≤200 Hz signals. Use Fast for >200 Hz signals.
If the signal being measured is a composite of different frequencies
above and below 200 Hz, select the appropriate filtering to analyze the
desired signal component.
Screens on which this field is displayed
AF ANALZYER
Span
Sets the span of frequencies to be displayed on the screen.
Operating Considerations
When the tracking generator is used, the span also defines the
frequency sweep range.
Spans >1.5 MHz disable the AF analyzer when the analyzer’s AF Anl
In field is set to FM Demod, AM Demod, or SSB Demod. This disables all
the AF analyzer’s measurement and output functions. When the AF
analyzer’s AF Anl In field is set to any of the other available inputs,
such as Audio In or Ext Mod, the speaker and SCOPE MONITOR
OUTPUT are not affected when the spectrum analyzer’s span is
changed.
Screens on which this field is displayed
SPEC ANL: main controls menu
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