Agilent Technologies E8285A manual Atten Hold, Audio In Lo

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.

600To 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

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