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- GMA 340
- Installation Manual
Garmin GMA 340 Installation Manual
Summary of GMA 340
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(gma 340 and gma 340 dual adf shown) £ garmin international, inc. 1200 e. 151 st street olathe, ks 66062 usa 190-00149-01 revision l june 2003 gma 340 audio panel installation manual (gma 340, gma 340h, gma 340 dual adf).
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Page a gma 340 installation manual rev. L 190-00149-01 © copyright 2003 garmin ltd. Or its subsidiaries all rights reserved 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 wi...
Page 3: Table of Contents
Gma 340 installation manual page i 190-00149-01 rev. L table of contents section 1 general information paragraph page 1.1 introduction............................................................................................................................. 1-1 1.2 general description ...............
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Page ii gma 340 installation manual rev. L 190-00149-01 section 3 operation paragraph page 3.1 operation .................................................................................................................................... 3-1 3.1.1 front panel controls...................................
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Gma 340 installation manual page iii 190-00149-01 rev. L list of illustrations figure page 2-1 rear connectors..................................................................................................................... 2-3 2-2 audio shield termination ..........................................
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Page iv gma 340 installation manual rev. L 190-00149-01 gma 340 hardware mod level history the following table identifies hardware modification (mod) levels for the gma 340 audio panel. Mod levels are listed with the associated service bulletin number, service bulletin date, and the purpose of the m...
Page 7: Section 1
Gma 340 installation manual page 1-1 190-00149-01 rev. L section 1 general information 1.1 introduction this manual provides the installation and operating instructions for the garmin gma 340, gma 340h and gma 340 dual adf audio panel. Reference to gma 340 throughout this manual refers to all versio...
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Page 1-2 gma 340 installation manual rev. L 190-00149-01 • independent pilot, copilot, and passenger volume controls • individual vox circuits for each of six (6) mic inputs • automatic selection of radio audio source when corresponding mic is selected • masq tm processing • split com transceiver fu...
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Gma 340 installation manual page 1-3 190-00149-01 rev. L specification characteristic intercom positions: 6 (pilot, copilot, 4 passengers) volume controls: 3 (pilot, copilot, passengers) vox level controls: 2 (pilot, copilot/passengers) vox circuits: 6 (one per mic input) music inputs (stereo): 2 (1...
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Page 1-4 gma 340 installation manual rev. L 190-00149-01 1.6 additional equipment required • antenna sealant (use manufacturer’s instructions, install according to faa ac 43.13-2a). • cables: the installer will fabricate and supply all system cables. Interconnect wiring diagrams are detailed in appe...
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Gma 340 installation manual page 1-5 190-00149-01 rev. L 1.7 limited warranty this garmin product is warranted to be free from defects in materials or workmanship for one year from the date of purchase. Within this period, garmin will at its sole option, repair or replace any components that fail in...
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Page 13: Section 2
Gma 340 installation manual page 2-1 190-00149-01 rev. L section 2 installation 2.1 introduction this section provides the necessary information for the installation and checkout of the gma 340 audio panel. Installation of the gma 340 will differ according to equipment location and other factors. Ca...
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Page 2-2 gma 340 installation manual rev. L 190-00149-01 2.3.4 installation approval considerations for pressurized aircraft antenna and cable installations on pressurized cabin aircraft require faa approved installation design and engineering substantiation data whenever such installations incorpor...
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Gma 340 installation manual page 2-3 190-00149-01 rev. L 2.5 rear connections 2.5.1 location the gma 340 has two 44 pin connectors located at the rear of the unit, designated j1 and j2. J1 and j2 pin assignments are given in table 2-1. When viewed from the back of the rack, j1 and j2 look like the f...
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Page 2-4 gma 340 installation manual rev. L 190-00149-01 pin # connector j1 connector j2 1 mkr ant pilot headset return 2 mkr ant return co-pilot headset return 3 com 3 in co-pilot headset l 4 com 3 return co-pilot headset r 5 com 3 mic 14v lgt lo/28v lgt lo 6 com 3 key* 14v lgt/28v lgt lo 7 adf in ...
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Gma 340 installation manual page 2-5 190-00149-01 rev. L 41 pass headset r pass 4 mic 42 pass headset return pass 4 mic return 43** tel ringer return spkr return 44** tel ringer in spkr out table 2-1. J1 and j2 pin assignments (dual adf in parentheses) connector type high density wire gauge 22-28 aw...
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Page 2-6 gma 340 installation manual rev. L 190-00149-01 2.5.3 noise because the audio panel is a point in the aircraft where signals from many pieces of equipment are brought together, care must be taken to minimize effects from coupled interference and ground loops. Coupled interference can sneak ...
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Gma 340 installation manual page 2-7 190-00149-01 rev. L 2.6.2 failsafe operation check 1. Turn the unit off by rotating the pilot intercom knob (5) counter clockwise. 2. Check the failsafe operation by exercising the com 1 microphone, microphone key and audio over the headphones. Note for units wit...
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Page 2-8 gma 340 installation manual rev. L 190-00149-01 2.6.5 aircraft receivers check 1. Select the audio source corresponding to each installed avionics unit and check for audio over the headsets. 2. Check for pilot/copilot audio isolation when pressing the com 1/2 button (15). (not applicable to...
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Gma 340 installation manual page 2-9 190-00149-01 rev. L 2.7 adjustments the following adjustments can be made through access holes in the top cover of the gma 340: 1. Marker beacon audio level (refer to garmin service bulletin 0208 if connecting to a sandel sn3308 ehsi. 2. Marker beacon sensitivity...
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Page 2-10 gma 340 installation manual rev. L 190-00149-01 a/c radio spkr level pilot pa mic spkr level copilot pa mic spkr level marker audio level music1 mute trip level mkr lo sense mkr hi sense figure 2-3. Access hole location (top view).
Page 23: Section 3
Gma 340 installation manual page 3-1 190-00149-01 rev. L section 3 operation 3.1 operation figure 3-1. Gma 340 front panel 3.1.1 front panel controls 1. Marker beacon lights 2. Marker beacon receiver audio select/mute button 3. Marker beacon receiver sensitivity indicator leds 4. Marker beacon recei...
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Page 3-2 gma 340 installation manual rev. L 190-00149-01 13. Transceiver audio selector buttons (com 1, com 2, com 3) 14. Transmitter (audio/mic) selection buttons 15. Split com button (spkr in dual adf) 16. Aircraft radio audio selection buttons (nav1, nav2, dme, adf) 17. Annunciator test button 18...
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Gma 340 installation manual page 3-3 190-00149-01 rev. L 3.1.5 split com (not applicable to dual adf) pressing the com 1/2 button (15) activates the split com function. While this mode is active, com 2 is dedicated solely to the copilot as a mic/audio source while com 1 is dedicated to the pilot as ...
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Page 3-4 gma 340 installation manual rev. L 190-00149-01 3.1.9 pa function the pa mode is activated by pressing the pa button (11). Then, when either the pilot’s or copilot’s microphone is keyed, the corresponding mic audio is heard over the cabin speaker. If the spkr button (12) is also active, the...
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Gma 340 installation manual page 3-5 190-00149-01 rev. L • pilot mode isolates the pilot from everyone else and dedicates the aircraft radios to the pilot exclusively. The copilot and passengers share communication between themselves but cannot communicate with the pilot or hear the aircraft radios....
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Page 3-6 gma 340 installation manual rev. L 190-00149-01 3.1.13 marker beacon receiver the marker beacon is part of an ils system, and in certain instances, used to identify an airway. In addition to the normal marker beacon functions, the gma 340 provides an audio muting function. The leds illumina...
Page 29: Appendix A
Gma 340 installation manual page a-1 190-00149-01 rev. L appendix a certification documents a.1 continued airworthiness this section provides assistance to the installing agency in preparing instructions for continued airworthiness (ica) in response to bulletin number hbaw 98-18, “checklist for inst...
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Page a-2 gma 340 installation manual rev. L 190-00149-01 4. Servicing information n/a 5. Maintenance instructions maintenance of the gma 340 audio panel is ‘on condition’ only. Periodic maintenance is not required. Refer to the gma 340 audio panel maintenance manual. 6. Troubleshooting information r...
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Gma 340 installation manual page a-3 190-00149-01 rev. L “the attached revised/new instructions for continued airworthiness (date ______) for the above aircraft or component major alteration have been accepted by the faa, superseding the instructions for continued airworthiness (date ______).” 17. A...
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Page a-4 gma 340 installation manual rev. L 190-00149-01 a.2 environmental qualification form nomenclature: gma 340 audio panel type/model/ part no.: 010-00152-( ), which includes all 011-00401-( ); 340h is -01; dual adf is-20. Tso-c50c, tso-c35d class a, jtso-c50c, jtso-2c35d manufacturer’s specifi...
Page 33: Appendix B
Gma 340 installation manual page b-1 190-00149-01 rev. L appendix b installation drawings b.1 general this section contains the following installation drawings: • b1, gma 340 outline drawing • b2, connector/rack kit drawing • b3, gma 340 recommended panel cutout dimensions • b4, j1 interconnect wiri...
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Gma 340 installation manual page b -3 (page b-4 blank) 190- 001 49 -01 rev l figure b1 gma 340 outline drawing.
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Gma 340 installation manual page b -5 (page b-6 blank) 190- 001 49 -01 rev l figure b2. Connector/rack kit drawing.
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Gma 340 installation manual page b -7 (page b-8 blank) 190- 001 49 -01 rev l figure b3. Gma 340 recommended panel cutout dimensions.
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Gma 340 installation manual pag e b -9 (pag e b- 10 b lan k) 190- 001 49 -01 rev l figure b4. J1 interconnect wiring diagram ext amber lamp (m) mkr ant mkr ant return masq inh nc com 1 transceiver com 2 com 3 nav 1 radio dme radio j1 middle mkr sens gnd lug ptt 25 26 9 10 11 12 27 28 13 14 15 30 23 ...
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Gma 340 installation manual page b -11 (page b -12 blank) 190- 001 49 -01 rev l figure b5. J2 interconnect wiring diagram aircraft gnd aircraft gnd j2 ptt 5a 1 31 16 2 4 3 34 33 32 35 36 37 38 39 40 41 42 24 23 25 27 26 28 44 43 13 14 20 21 12 17 19 18 8 9 10 11 5 6 7 15 22 29 30 13a. 14. W h en no ...
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Gma 340 installation manual page b -13 (page b -14 blank) 190- 001 49 -01 rev l figure b6. J1 interconnect wiring diagram com 3 mic com 3 key com 1 spkr load com 1 spkr load return com 2 spkr load return alt wrn return tel ringer return com 3 altitude warning audio adf 2 radio telephone audio j1 mar...
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Gma 340 installation manual page b -15 (page b -16 blank) 190- 001 49 -01 rev l figure b7. J2 interconnect wiring diagram pilot headset return aircraft pwr pa mute 8 ohm select tone enable (reserved, do not use) ics mute inhibit swap return copilot mic key* pass 4 mic return pass 2 mic return pass 1...
Page 42: Appendix C
Gma 340 installation manual page c-1 190-00149-01 rev. L appendix c stc permission c.1 general consistent with n8110.69 or order 8110.4, aviation authority approved installers are hereby granted permission to use stc #sa00710wi data to modify aircraft..
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Page c-2 gma 340 installation manual rev. L 190-00149-01.