User Guide

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Table Of Contents

Garmin G1000 Audio Panel Pilot’s Guide190-00378-02 Rev. A

6A-13

OPERATION

To adjust ICS volume when MAN SQ is OFF

(key not annunciated):

1. Turn the appropriate

VOL/SQ

knob.

To adjust ICS volume when MAN SQ is ON

(key annunciated), do one of the following:

1a. If the unit is in manual squelch threshold

adjustment mode (

annunciation at the

lower right of the

VOL/SQ

knob is lit), press the

VOL/SQ

knob to toggle to ICS volume adjust-

ment mode, and turn the appropriate

VOL/SQ

knob.

1b. If the unit is already in ICS volume adjustment

mode (

VOL

annunciation at at the lower left

of the

VOL/SQ

knob is lit), turn the appropriate

VOL/SQ

knob.

Intercom Squelch Control

Each microphone input has an automatic squelch

threshold. Manual squelch override as well as keyed ICS

operation (for noisier cockpits) is also available.

The VOL/SQ knob manually adjusts squelch thresh-

old when the MAN SQ key is annunciated and the SQ an-

nunciation is lit. The small VOL/SQ knob controls pilot

squelch threshold and the large VOL/SQ knob controls

copilot/passenger squelch threshold. Turning either knob

clockwise increases the threshold. Turning either knob

counterclockwise decreases the threshold.

NOTE: In manual squelch mode, when the

VOL/SQ knob is adjusted to minimum, all crew

audio inputs can break squelch. When the

VOL/SQ knob is adjusted to maximum, the

ICS audio is heard only when an ICS PTT is

pressed.

To adjust squelch threshold level manually

when

MAN SQ

is OFF (key not annunciated):

1. Press the

MAN SQ

key:

2a. If the

VOL

annunciation is lit, press the

VOL/SQ

knob for

annunciation and turn the

VOL/SQ

knob.

2b. If the

annunciation is already lit, turn the

VOL/SQ

knob.

To adjust squelch threshold level manually

when

MAN SQ

is ON (key annunciated):

1a. If the

VOL

annunciation is lit, press the

VOL/SQ

knob for

annunciation and turn the

VOL/SQ

knob.

1b. If the

annunciation is already lit, turn the

VOL/SQ

knob.

Volume Adjustments

The audio level of various signals can be adjusted if

desired by a Garmin-authorized service center.

MASTER AVIONICS SQUELCH (MASQ)

MASQ (Master Avionics Squelch) reduces ambient

noise from the aircraft radios. When no audio is detected,

MASQ processing further reduces the amount of back-

ground noise from the radios.

The Master Avionics Squelch (MASQ) threshold level

can be adjusted or disabled by a Garmin-authorized ser

vice center.