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190-00917-00 Rev. A

Garmin GMA 240 Pilot’s Guide

11

GMA 240 Audio Panel

GMA 240 PrOGrAMMING OPTIONs

Programming  options  include  variable  configurations  that  can  be 

arranged by a Garmin authorized service center.  Some options include a 
Pilot operable pushbutton or toggle switch or might be fixed configurations 
that are unchangeable.  Configurations include the following:

• 

COM Swap

 - A remote mounted pushbutton is used to transfer the active 

microphone between COM1 MIC and COM2 MIC.

• 

COM muting on transmit

 - Audio on the other selected radios is muted 

while the active transceiver is transmitting.

• 

Deactivate MASQ

TM

 (master avionics squelch).  Enables/disables master 

squelch.  The threshold level of MASQ

TM

 is also adjustable.

• 

Internal  Sidetone

  -  Enables/disables  internal  sidetone  for  radios  that 

do  not  provide  sidetone  during  transmission.    This  can  be  selected 
independently for COM1, COM2, and TEL.

• 

Crew Isolation

 - ICS isolation for the crew in place of Pilot isolation.

• 

PILOT ISO Music

 - Enable music audio to be heard by the Pilot during 

PILOT ISO mode.

• 

Button Press Tone

 - Enable beep tone annunciation of button presses.

• 

Alert Music Mute

 - Disable music interruption by alert audio.  Default 

operation is recommended.

• 

Jack TEL detect

 - Phone detection is bypassed.  Audio panel assumes a 

telephone is plugged into the jack whenever the 

TEL

 Key is selected.

• 

Music mute by primary COM only

 - When 

RADIO

 Key is selected, 

music is muted only when active COM is receiving audio.

• 

Enable  Keyed  ICS

  -  Intercom  MIC  audio  heard  only  when  the 

corresponding 

ICS

 Key for the MIC position is pressed.

• 

Individual volume controls

 - The volume can be adjusted individually 

for each alert input, the rear connector pin TEL audio input, and the front 
accessory jack TEL audio input.

Summary of Contents for Fishfinder 240 Blue

Page 1: ...GMA 240 Pilot s Guide...

Page 2: ...Fax 886 02 2642 9099 Web Site Address www garmin com Except as expressly provided herein no part of this manual may be reproduced copied transmitted disseminated downloaded or stored in any storage m...

Page 3: ...RMINBELIABLEFORANYINCIDENTAL SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES WHETHER RESULTING FROM THE USE MISUSE OR INABILITYTO USETHIS PRODUCT OR FROM DEFECTS INTHE PRODUCT Some states do not allow the e...

Page 4: ...ver and AUX Audio Keys Music On Off Key Intercom Mute Key and Radio Mute Key Pilot ICS Isolation Key Telephone Key Music Audio or Telephone Input Jack Volume Squelch Rotating the Pilot Volume Knob lef...

Page 5: ...ephone key Pressing the TEL Key selects the Telephone interface Pressing again deselects the telephone NAV receiver and AUX keys Pressing a key selects the Nav receiver or AUX audio input Pressing aga...

Page 6: ...nnect tone In addition to radio squelch circuitry MASQTM Master Avionics Squelch processing further reduces ambient noise from the avionics inputs Upon installation the unit may be configured in vario...

Page 7: ...ON and OFF with the avionics master switch The unit may also be turned ON and OFF with the Pilot ICS Volume Knob Rotate the knob clockwise out of the detent to turn ON Rotate the knob counterclockwise...

Page 8: ...tercom audio level Music volume is controlled by pulling the right side Copilot passenger volume control knob and turning it for the desired audio level ICS squelch is adjusted by turning the Pilot si...

Page 9: ...ed Radios Alerts Telephone Pilot Music Copilot Passengers Music Copilot Passengers Music CREW When Crew Isolation is configured and PILOT ISO is selected Selected Radios Alerts Telephone Pilot Copilot...

Page 10: ...MUSIC 2 jacks Press the MUSIC Key to enable the selected music input to be heard Press again to disable music audio Press the MUSIC 1 2 Key to select either the MUSIC 1 or MUSIC 2 input Annunciators...

Page 11: ...tone for radios that do not provide sidetone during transmission This can be selected independently for COM1 COM2 and TEL Crew Isolation ICS isolation for the crew in place of Pilot isolation PILOT IS...

Page 12: ...2 U S A p 503 391 3411 f 503 364 2138 Garmin Europe Ltd Liberty House Bulls Copse Road Hounsdown Business Park Southampton SO40 9RB U K p 44 0870 8501241 f 44 0870 8501251 Garmin Corporation No 68 Jan...

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