HP 8921A - Page 442

442
Chapter 19, RX Test Screen
Field Descriptions
AC Level
This measurement displays either rms potential (voltage) or audio power (Watts
or dBm).
Operating Considerations
When the unit-of-measure is changed to measure AF power, the external load
resistance must be specified. (Refer to theExt Load R field description, on page
444
.)
The input for the ac level measurement on this screen is always the AUDIO IN
connectors.
See Also
"Entering and Changing Numbers" on page 63
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 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)"
.