HP 8920A - Page 486

486
S:\HP892XX\USRGUIDE\manual\rfgscrn.fb
Chapter 18, RF Generator Screen
Field Descriptions
AFGen1 Freq
This Audio Frequency Generator control sets the frequency for the first audio
frequency sinewave generator.
AFGen2 Freq
This Audio Frequency Generator control sets the frequency for the second audio
frequency sinewave generator. It can also be used to set the Function Generator’s
frequency when the signaling encoder is used.
This field is also used to control the send/stop functions for some encoder modes.
For example, when sending a tone sequence, this field is used to send and stop the
sequence. The field’s name changes to
AFGen2 when this type of operation is
used.
This field is removed from this screen when NMT encoding or decoding is used.
(NMT programs can only be run from the NMT Decoder screen.)
See Also
Chapter 10, "Signaling Encoder (AF Generator 2)"
AFGen1 To
This Audio Frequency Generator control is used to set two values:
• The upper field determines whether the AF signal modulates the RF Generator, or is
output through the AUDIO OUT connector.
• The lower field sets the amplitude (including Off). The level at the AUDIO OUT
connector is always in volts rms across a low-impedance output.
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