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Chapter 4, Description of Fields
Fields
Controls (Oscilloscope)
This field allows the user to select which of the oscilloscope’s menus is displayed.
Main
Trigger
Marker
Screens Where Field is Present
OSCILLOSCOPE
Controls (Spectrum Analyzer)
This field allows the user to select which of the spectrum analyzer’s menus is
displayed.
Main
RF Gen
Marker
Screens Where Field is Present
SPECTRUM ANALYZER
Current
When set to Current, this field displays the DC current measured at the DC
CURRENT MEAS port on the back of the Test Set. Any offset can be removed by
selecting
Zero in the DC Current field.
This field is a one-of-many field used to select the type of measurement to be
made by the Audio Frequency Analyzer on the audio signal being measured. See
“Measure” in the GPIB Command Syntax chapter of the E8285A Condensed
Programming Reference Guide for programming command syntax.
Selecting this field displays the following measurement choices:
SINAD
Distn (Distortion)
SNR (Signal to Noise Ratio)
AF Freq
DC Level
Current (DC only)
Operating Considerations
This is a priority control field. Accessing the RX TEST or TX TEST screen
overrides any changes made to this field in other screens.
For more information about SNR operation, see the
SNR field description, on page
398
.