HP 8920A - Page 498

498
S:\HP892XX\USRGUIDE\manual\rxtscrn.fb
Chapter 19, RX Test Screen
Field Descriptions
Amplitude
The amplitude field adjusts the amplitude of the RF Generator.
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.
If a microphone is connected, and the amplitude is off, keying the microphone
causes the amplitude to turn on to its previous level until the microphone is no
longer keyed.
See Also
Atten Hold
field description, on page 498
"Interaction Between Screens" on page 54
"MIC/ACC" on page 568
Atten Hold
Attenuator hold prevents the fixed RF output attenuators from switching in and
out, eliminating the brief loss of the output signal as the level is changed. This
function is helpful when making squelch measurements.
Operating Considerations
When this function is set to On, the RF output level is restricted to a range of
15 dB around the present
Amplitude setting. Attempting to set an amplitude
outside the allowed range results in an error message and beep (if the beeper is
on). RF output level accuracy is uncalibrated outside the allowed range.
Ext Load R
External load resistance is used to calculate and display AF power dissipated in an
external load resistance. Power is calculated using the voltage measured at the
AUDIO IN connections and the resistance value you enter into this field.
See Also
AC Level
field description, on page 496