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216 Chapter 6
C:\Spk\Ref\RefGuideRevE\Anlgscrn.fm
Analog Measurements - Screens and Control Fields
Control Fields for Analog Measurements
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
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.
Screens on which this field is displayed
AF ANALYZER
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.
Screens on which this field is displayed
AF ANALYZER