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Chapter 4, Description of Fields
Fields
Atten Hold
Attenuator hold prevents the fixed RF output attenuators from switching in and
out, eliminating the 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 greatly degraded outside the allowed range.
Screens Where Field is Present
DUPLEX TEST
RF GENERATOR
RX TEST
Audio In Lo
This field sets the AUDIO IN LO connector’s state.
Gnd causes the center pin of the connector to be connected directly to chassis ground.
Float isolates the center pin of the connector from ground, providing a floating input to
the AF Analyzer.
600 To Hi establishes a 600-ohm impedance between the center pins of the AUDIO IN
LO and AUDIO IN HI connectors. Also, the Ext Load R field is removed, since the
load is now fixed to 600 ohms.
Screens Where Field is Present
AF ANALYZER