Sinad; Snr; Snr Operation - HP 8920A User Manual

Chapter 5, AF Analyzer Screen
Block Diagram

SINAD

SNR

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This measurement field is used to select and display any one of the following
measurements:
SINAD
Distortion
SNR (Signal to Noise Ratio)
AF Frequency
DC Level
1
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.

SNR Operation

• Selecting SNR turns off the other audio measurement.
• The RF Generator and AFGen1 must be set up to provide the radio's carrier. (AFGen1
is automatically turned on and off repeatedly during this measurement.)
• AFGen2 must be turned off.
• The radio's receiver's audio output must be connected to the AUDIO IN port (set the
AF Anl In field to Audio In).
See Also
"Interaction Between Screens" on page 54
The field is found by selecting the SINAD field on the Test Set display of the
SNR
AF ANALYZER screen.This field displays the signal to noise ratio of the input
audio signal.
1. HP 8920A requires Current Measurement option