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Related Manuals for Garmin 347
Summary of Contents for Garmin 347
- Page 1 GMA 347 audio panel pilot’s guide...
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Page 2: Limited Warranty
Garmin retains the exclusive right to repair or replace the unit or software, or to offer a full refund of the purchase price, at its sole discretion. - Page 3 Except as expressly provided herein, no part of this manual may be reproduced, copied, transmitted, disseminated, downloaded or stored in any storage medium, for any purpose without the express written permission of Garmin. Garmin hereby grants permission to download a single copy of this manual and of any revision...
- Page 4 Copilot/Passenger Volume Knob Marker Mute Com Receiver Nav Receiver Recording Playback Keys Keys Marker Beacon Indicators Marker Beacon Transmit Receive Split Com Telephone and Speaker Intercom Isolation Hi/Lo Sensitivity Keys Keys Keys Garmin GMA 347 Pilot’s Guide 190-00325-00 Rev. A...
- Page 5 PA mode. SPKR key blinks in PA mode. Intercom isolation keys. Four modes available. Marker Beacon System. Annunciators, Marker Mute key, Marker Sense key and Hi Sense LED. Marker Mute key also turns ON/OFF Music Mut- ing and halts COM playback. Garmin GMA 347 Pilot’s Guide Layout...
- Page 6 Description INTRODUCTION The Garmin GMA 347 is an audio control panel and mark- er beacon system. Pushbutton keys control audio selection of COM, NAV, telephone and intercom. With the exception of the PLAY key, LED annunciators indicate when a key function is selected.
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Page 7: Mono/Stereo Headsets
Microphones The GMA 347 Audio Panel can accept up to six (6) micro- phone inputs, allowing for a two-person crew and up to four (4) passenger intercom stations in the aircraft. NOTE: A push-to-talk (PTT) switch must be pressed to transmit on a selected Transceiver. - Page 8 The unit may be configured with preset volume levels for MUSIC 1, MUSIC 2, UNSWITCHED 1, UNSWITCHED 2, UNSWITCHED 3 and ALTITUDE WARNING. configuration table at the end of this manual. Contact a Garmin- authorized service center for volume level adjustment. COM MUTING The COM muting on receive and COM muting on transmit options are enabled in the Configuration mode.
- Page 9 Telephone The GMA 347 provides a 2-way telephone interface. Operation depends on the state of the TEL key and ICS mode. See the ICS Isolation Modes & Telephone Distribu- tion table in the operation section of this manual. Tele- phone communication is much like using the intercom, allowing both parties to talk at once.
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Page 10: System Operation
PA mode. The SPKR key LED blinks when PA is active. Power ON/OFF The GMA 347 may be powered ON and OFF with the avionics master switch. To control the ON and OFF function with the Pilot ICS volume, rotate the knob clockwise out of the detent to turn ON and counterclockwise into the detent to turn OFF. - Page 11 Split COM mode. The copilot’ s voice is then heard over the cabin speaker when keyed. A second press of the SPKR key returns the copilot to normal Split COM operation. Garmin GMA 347 Pilot’s Guide Operation...
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Page 12: Transmit Interlock
Split COM can be disabled in the Configuration mode. Contact a Garmin-authorized service center for Split COM and transmit-interlock configuration. COM SWAP A remote mounted pushbutton switch may be used to transfer the active microphone between COM1 MIC and COM2 MIC. -
Page 13: Marker Beacon Receiver
The GMA 347 can drive external marker lamps if required and also provides an autopilot middle marker sense output. Prior to beginning an ILS approach, select high or low marker sensitivity with the SENS key. - Page 14 MUSIC 1; TEL audio Copilot; Selected radios; passengers; pilot; TEL audio MUSIC 1 ICS Isolation Modes & Telephone Distribution Garmin GMA 347 Pilot’s Guide Passenger Input to Phone Hears Selected radios; pilot; copilot; None passengers; MUSIC 2 Selected radios;...
- Page 15 Selected radios; Selected radios; pilot; copilot; pilot; copilot; TEL audio TEL audio ICS Isolation Modes & Telephone Distribution (Cont’d) Garmin GMA 347 Pilot’s Guide Operation Passenger Hears Input to Phone Selected radios; pilot; passengers; Copilot MUSIC 2 Selected radios;...
- Page 16 Operation GMA 347 PROGRAMMING OPTIONS Programming options include variable configurations that can be arranged by a Garmin authorized service center. Some options include a crew operable pushbutton or toggle switch or might be fixed configurations that are unchangeable by the crew.
- Page 17 Unswitched 1, Unswitched 2, Unswitched 3 and Alti- tude Warning 190-00325-00 Rev. A CAUTION: When the GMA 347 Audio panel is turned OFF or inoperative, certain autopilots will not oper- ate. No warning tone is supplied when the autopilot disengages, and the middle marker sense signal is not supplied.
- Page 18 Unit 5, The Quadrangle Abbey Park Industrial Estate Romsey, SO51 9DL, U.K. p: 44/0870.8501241 f: 44/0870.8501251 Garmin Corporation No. 68, Jangshu 2nd Road Shijr, Taipei County, Taiwan p: 886/2.2642.9199 f: 886/2.2642.9099 www.garmin.com © 2005 Garmin Ltd. or its subsidiaries 190-00325-00 Rev. A...