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Garmin GMA 345 3-COM Pilot's Manual

Aviation audio panel with bluetooth
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GMA 345 3-COM
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Summary of Contents for Garmin GMA 345 3-COM

  • Page 1 GMA 345 3-COM pilot’s guide...
  • Page 2 ©2017 The Bluetooth word mark and logos are registered trademarks owned by ® Bluetooth SIG, Inc. and any use of such marks by Garmin is under license. Other trademarks and trade names are those of their respective owners. February, 2018 190-01878-05 Rev.
  • Page 3 (iv) damage caused by service performed by anyone who is not an authorized service provider of Garmin; or (v) damage to a product that has been modified or altered without the written permission of Garmin. In addition, Garmin reserves the right to refuse warranty claims against products or services that are obtained and/or used in contravention of the laws of any country.
  • Page 4 Distributor warranties are only valid in the area of intended distribution. Devices purchased in the U.S. or Canada must be returned to the Garmin service center in the U.K., the U.S., Canada or Taiwan for service.
  • Page 5 Transmitter Grant of Equipment Authorization Contains FCC ID: QOQWT32I This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
  • Page 6 AND CONDITIONS OF THE FOLLOWING SOFTWARE LICENSE AGREEMENT. PLEASE READ THIS AGREEMENT CAREFULLY. Garmin Ltd. and its subsidiaries (“Garmin”) grants you a limited license to use the software embedded in the Garmin Product (the “Software”) in binary executable form in the normal operation of the Garmin Product.
  • Page 7 Part Number Change Summary 190-01878-05 Initial release Date Description February, 2018 Production Release...

  • Page 8: Table Of Contents

    Enabling/Disabling Muting .....................26 Bluetooth ..........................26 ® Pairing a Bluetooth Device .....................27 Pairing to a Garmin VIRB X or VIRB XE Action Camera ...........28 Pairing To A Third-Party Camera ..................28 Disabling Bluetooth ......................29 Bluetooth Media Controls ....................29 Bluetooth Telephone Volume Controls ................29 USB Power Jack ............................30...
  • Page 9 GMA 345 3-COM Audio Panel FEATURES AND OPERATION The GMA 345 3-COM Audio Panel provides the traditional audio selector functions of microphone and receiver audio selection. The Audio Panel includes an intercom system (ICS), a marker beacon receiver, a COM clearance recorder, USB power jack, and Bluetooth audio.

  • Page 10: Power-Up

    GMA 345 (2-COM) User Interface POWER-UP The GMA 345 3-COM performs a self-test during power-up. During the self-test all Audio Panel annunciator lights illuminate for approximately two seconds. Once the self-test is completed, most of the settings are restored to those in use before the unit was last turned off.
  • Page 11 Minimum/maximum Right seat crew Right seat Knob right/left to volume is reached at member Music crew member increase/decrease full counter-clockwise/ Volume increases/ Music Volume volume clockwise position decreases Left/Right Knob Functions 190-01878-05 Rev. A Garmin GMA 345 3-COM Pilot’s Guide...

  • Page 12: Transceivers

    By default, while transmitting on a COM channel (as selected with the COM1 MIC, COM2 MIC, and COM3 MIC keys), both the transmitting and receiving audio are heard on the COM channel. The GMA 345 3-COM can be configured to instead mute receiving audio on a transmitting COM channel.

  • Page 13: Enabling/Disabling Monitored Com Muting

    MIC Enabled MIC Disabled Transmit Indication: Audio is sent from the Push-to-Talk (PTT) MIC in-key corresponding Crew MIC keyed. annunciator flashes. to the selected COM. * 190-01878-05 Rev. A Garmin GMA 345 3-COM Pilot’s Guide...
  • Page 14 COM2 MIC and COM3 MIC keys. * The pilot has priority when transmitting in the case that both crew members attempt to transmit on the same COM. Transceiver Key Functions Garmin GMA 345 3-COM Pilot’s Guide 190-01878-05 Rev. A...

  • Page 15: Receivers

    (if selected). All radios can be selected individually or simultaneously. Selecting a NAV Radio Receiver AUXILIARY INPUTS The GMA 345 3-COM has 3 AUX inputs. A single AUX Key selects all three AUX inputs to be simultaneously heard. Selecting Auxiliary Inputs MARKER BEACON RECEIVER The marker beacon receiver detects any marker beacon signal within the reception range of the aircraft.

  • Page 16: Turning Marker Beacon Audio On

    3000 Hz White (Inner) The GMA 345 3-COM provides three states of marker beacon operation; On, Muted, and Deselected. The MKR/MUTE key annunciator indicates when marker beacon audio is selected. Marker beacon audio is not heard when the annunciator is off or when the annunciator is on with the marker beacon audio muted.

  • Page 17: Deselecting Marker Beacon Audio

    INTERCOM SYSTEM (ICS) The GMA 345 3-COM includes a three-position intercom system (ICS), two MUSIC inputs, and one telephone/entertainment input for the pilot, copilot and passengers. The intercom provides Pilot and Crew audio isolation.

  • Page 18: Crew Isolate Mode

    The outer, larger knobs are used to control music volume. The left inner knob can be used to turn off the GMA 345 3-COM audio panel, by turning fully counter-clockwise until the knob clicks. All backlight and annunciator LEDs will turn off.

  • Page 19: Passenger Muting

    PA announcements. To initiate Split-PA Mode, first enter Split-COM Mode by pressing any two MIC Keys simultaneously, then press and hold the SPKR Key for one second. 190-01878-05 Rev. A Garmin GMA 345 3-COM Pilot’s Guide...

  • Page 20: 3D Audio

    COM numbers increasing clockwise. All other intercom positions are processed to sound like their relative seat location. By default, the GMA 345 3-COM assumes the pilot sits in the left seat. A Garmin authorized service center can make changes to the default configuration.

  • Page 21: Enabling 3D Audio

    3) If after checking solutions #1 and 3) Incorrect aircraft wiring (left/right #2 see a service center as soon as shorted together) possible to inspect/correct wiring. This wiring fault can cause fail-safe audio not to function. 190-01878-05 Rev. A Garmin GMA 345 3-COM Pilot’s Guide...
  • Page 22 This wiring fault can cause fail-safe no audio heard in instead of left, or audio not to function. left ear left/right swapped) 3D Audio Troubleshooting Garmin GMA 345 3-COM Pilot’s Guide 190-01878-05 Rev. A...

  • Page 23: Clearance Recorder And Player

    GMA 345 3-COM Audio Panel CLEARANCE RECORDER AND PLAYER The GMA 345 3-COM contains a digital clearance recorder that records up to 60 seconds of the selected COM radio signal. Recorded COM audio is stored in separate memory blocks. Once 60 seconds of recording time have been reached, the recorder begins recording over the stored memory blocks, starting from the oldest block.

  • Page 24: Entertainment Inputs

    GMA 345 3-COM Audio Panel ENTERTAINMENT INPUTS The GMA 345 3-COM provides four telephone/entertainment inputs: • The SEL Key selects the music source (Music 1, Music 2, Bluetooth Music, or Music OFF) for all positions. The pilot can choose not to hear the selected music source by either turning down the Pilot music volume or enabling PILOT ‘ICS ISOLATION’.
  • Page 25 * If TEL is selected (green), pre-recorded ringer audio is played. ** If TEL is selected (green), no action is required. TEL automatically turns blue and connects. TEL Key Functions 190-01878-05 Rev. A Garmin GMA 345 3-COM Pilot’s Guide...

  • Page 26: Music Effects

    Press and hold the AUX button for one second to toggle intercom muting of music on and off. The aural message “Intercom Mute Music Enabled/Disabled” is heard. BLUETOOTH ® The GMA 345 3-COM supports the following Bluetooth profiles and functions: • A2DP Bluetooth profile for entertainment audio input. • HFP Bluetooth profile for connection to a telephone (alternate interface for wired TEL function).

  • Page 27: Pairing A Bluetooth Device

    Pairing mode allows a new device to discover and create a connection to the GMA 345 3-COM. Additionally, pairing mode is used to forcefully disconnect a device currently connected to the GMA 345 3-COM. Press and hold the TEL (PAIR) Key for one second to enter pairing mode.

  • Page 28: Pairing To A Garmin Virb X Or Virb Xe Action Camera

    Garmin VIRB action camera that support Bluetooth mic audio input for recording. Pairing a Garmin VIRB to the GMA 345 3-COM works like pairing other Bluetooth audio devices. Once connected, pilot headphone audio will be delivered to the VIRB via Bluetooth. In a connection to the Garmin VIRB, the GMA is the source.

  • Page 29: Disabling Bluetooth

    GMA 345 3-COM Audio Panel isaBling lueTooTh To aid in troubleshooting, the GMA 345 3-COM Bluetooth can be disabled. To disable, press and hold the TEL (PAIR) Key for five seconds. “Bluetooth Disabled” audio is played. To re-enable without powercycling, press and hold the TEL (PAIR) Key for five seconds.

  • Page 30: Usb Power Jack

    Note that the GMA USB dust cover can be clipped to any USB cable plugged into the GMA. The dust cover has a clip feature that can attach to a USB cable for temporary storage to prevent losing the cover. Garmin GMA 345 3-COM Pilot’s Guide 190-01878-05 Rev. A...

  • Page 31: Fail-Safe Operation

    GMA 345 3-COM Audio Panel FAIL-SAFE OPERATION If there is a failure of the GMA 345 3-COM or when power is not applied, a fail-safe circuit connects the pilot’ s headset and microphone directly to the COM1 transceiver. Audio is not available on the speaker during Fail-safe operation.
  • Page 32 Press any two keys Press keys simultaneously simultaneously Music Equalizer Marker Press keys simultaneously Beacon Music High Sens Press and hold for 1 second Bass Press keys simultaneously Boost Alternate Key Function Quick Reference Garmin GMA 345 3-COM Pilot’s Guide 190-01878-05 Rev. A...
  • Page 34 Southampton, Hampshire SO40 9LR U.K. Garmin Corporation No. 68, Zhangshu 2nd Road Xizhi District, New Taipei City, Taiwan Contact Garmin Product Support at www.flygarmin.com. For warranty information refer to https://fly.garmin.com/fly-garmin/support/warranty-information/ 190-01878-05 Rev. A © 2018 Garmin Ltd. or its subsidiaries...

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