Garmin G1000 Cockpit Reference Guide for Cessna Nav III70SECTION 4 – AUDIO PANELVolume/Squelch ControlWhen the GMA 1347 MAN SQ key is selected, press-ing the VOL/SQ knob toggles between volume andsquelch adjustment. When the unit is in volume adjust-ment mode, the VOL annunciation on the lower left of theVOL/SQ knob is lit and volume can be adjusted. Whenthe unit is in squelch mode, the SQ annunciation on thelower right of the VOL/SQ knob is lit and squelch thresh-old level can be adjusted.Figure 4-7 Volume/Squelch ControlCurrent VOL/SQ StateInput Auto, VOL selected Manual, VOL selected Manual, SQ selectedMAN SQKey PressPrevious State:Manual, VOLselectedManual, VOLselectedAuto, VOL selected Auto, VOL selectedPrevious State:Manual, SQselectedManual, SQselectedGMA 1347 VOL/SQ Knob Press Auto, VOL selected Manual, SQ selected Manual, VOL selectedTable 4-4 Transitioning from Auto to Manual Squelch ModeNOTE: When the MAN SQ key is not selected(auto-squelch is active), pressing the VOL/SQknob has no effect on the VOL/SQ selection stateand VOL is automatically annunciated.When transitioning from auto to manual squelch, theunit returns to the previous VOL/SQ selection (see tablebelow).NOTE: The volume and squelch controls for theCOM and NAV radios are located on the PFD andMFD bezels (refer to the VHF NAV/COM Pilot’sGuide for details).Intercom VOL/SQ StateIntercom Volume ControlIntercom volume can be controlled with the VOL/SQknob. The small knob controls the pilot ICS volume.The large knob controls the copilot/passenger ICS vol-ume. Turning either knob clockwise increases audiolevel. Turning either knob counterclockwise decreasesaudio level. When MAN SQ is off (key not annunciated)volume adjustment is automatically selected and the VOLannunciation is lit.
