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Chapter 4, Description of Fields
Fields
Span
This field is displayed when the Controls field is set to Main. This field sets the
span of frequencies to be displayed on the screen.
GPIB Example
“DISP CSP;CSP:SPAN 3 MHZ“
sets the frequency span to 3 MHz.
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 AUDIO MONITOR OUTPUT are not affected when the
Spectrum Analyzer’s span is changed.
The span setting is coupled to the
BW= field.
Range of values: 10 kHz to 5 MHz
Screens Where Field is Present
SPECTRUM ANALYZER
CDMA REVERSE CHANNEL SPECTRUM
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 Where Field is Present
AF ANALYZER