HP 8920A - Page 554

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S:\HP892XX\USRGUIDE\manual\txtscrn.fb
Chapter 23, TX Test Screen
Field Descriptions
AFGen1 Freq
This Audio Frequency Generator control sets the frequency for the first audio
frequency sinewave generator.
AFGen1 Lvl
This Audio Frequency Generator control sets the level out the AUDIO OUT
connector in volts rms (across a low-impedance output), or in mW, W, or dBm
across a 600-ohm load (mW is selected by pressing [SHIFT], [ENTER]).
Operating Considerations
In the TX TEST screen, the signal is always output through the AUDIO OUT
connector.
Current
The Current field is found by selecting the SINAD field on the Test Set display
of the TX TEST screen. This field only displays the DC current measured at the
DC input port on the back of the Test Set. Any offset can be removed by selecting
Zero from the DC Current field.
DC Level
This field displays the DC voltage entering at the DC input port on the back of the
Test Set.
De-Emphasis
This setting selects or bypasses the 750 ms de-emphasis networks in the audio
analyzer and speaker circuitry.
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.
See Also
"Interaction Between Screens" on page 54