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190-01878-02

GMA 342/345 Installation Manual

Rev. 5

Page A

Garmin Ltd. or its subsidiaries

Except as expressly provided herein, no part of this manual may be reproduced, copied,

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the express prior written consent of Garmin. Garmin hereby grants permission to download a single

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any use of such marks by Garmin is under license. Other trademarks and trade names are those of their

respective owners.

Garmin International, Inc.

1200 E. 151st Street

Olathe, KS 66062 USA

Aviation Panel-Mount Technical Support Line (Toll Free) 1.888.606.5482

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Garmin aviation support and warranty information can be found at

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RECORD OF REVISIONS

Revision

Revision Date

Description

01/17/17

Initial Release

09/18/17

Updated Transmitter Grant of Equipment Authorization info

04/05/18

Updated Post Installation Checkout Procedure, added 3-COM unit info

09/17/19

Added missing pin info to Table 4-2

11/25/20

Added RS-232 pin info

Содержание GMA 342

Страница 1: ...190 01878 02 November 2020 Revision 5 GMA 342 345 Installation Manual...

Страница 2: ...unauthorized commercial distribution of this manual or any revision hereto is strictly prohibited 2017 The Bluetooth word mark and logos are registered trademarks owned by Bluetooth SIG Inc and any us...

Страница 3: ...ns in whole or in part of this manual DEFINITIONS OF WARNINGS CAUTIONS AND NOTES WARNING This product its packaging and its components contain chemicals known to the State of California to cause cance...

Страница 4: ...party providers You acknowledge that the Software is the property of Garmin and or its third party providers and is protected under the United States of America copyright laws and international copyri...

Страница 5: ...Bonding 2 7 2 7 Cooling Air 2 8 2 8 Configuration and Adjustment Options 2 8 2 9 Updating Software 2 13 2 10 Electrical Noise 2 14 2 11 Mounting Requirements 2 15 Section 3 Installation Procedure 3 1...

Страница 6: ...rete Inputs 4 12 4 8 Marker Beacon 4 12 Appendix A Installation Considerations for Upgrading from a Garmin GMA 340 A 1 A 1 Mechanical Considerations A 1 A 2 Electrical Considerations A 1 A 3 GMA 340 t...

Страница 7: ...ockpit speaker Both also include a cockpit voice recorder and playback feature to help in situations where a COM transmission may need to be heard again The GMA 345 includes a Bluetooth transceiver fo...

Страница 8: ...AUX 2 AUX 3 Microphone Inputs 6 Pilot Copilot 4 Passenger Microphone Keys 2 Pilot Copilot Music Inputs rear connector 2 Alert Inputs unswitched 4 Speaker Output 1 Headset Outputs 3 Pilot Copilot Pass...

Страница 9: ...of this form see the dealer OEM portion of the Garmin web site www garmin com 1 3 1 Physical Characteristics Table 1 2 Physical Characteristics GMA 342 345 Characteristic Specification Bezel Height 1...

Страница 10: ...eiver Transceiver bandwidth 100 Hz to 6 5 kHz Special functions Fail safe operation All inputs use MASQ processing Master Avionics Squelch Max input 5 Vrms Intercom Functions Positions 6 Pilot Copilot...

Страница 11: ...or 10 W The GMA 345 charge port features USB port detection that will connect the optimum charge rate for the device connected The charge port supports a maximum of 2 1 Amp charge current for devices...

Страница 12: ...ption Idle Current 0 34 A 14 VDC 0 19 A 28 VDC 4 76 W 14 VDC 5 32 W 28 VDC Typical Operating Current 0 83 A 14 VDC 0 43 A 28 VDC 11 62 W 14 VDC 12 04 W 28 VDC Maximum Current 1 19 A 14 VDC 0 90 A 28 V...

Страница 13: ...ons as defined in this installation manual The Appliance Project Identifier API for the GMA 342 and GMA 345 is GMN 01319 The API has been used for project identification with the FAA See applicable ha...

Страница 14: ...TSO C35d to not permanently and legibly marking the unit with each TSO s required information Garmin received a deviation from TSO C35d to use FAR 45 15 b instead of FAR 37 7 d as the general rules go...

Страница 15: ...i transmitter product procedures 2 IC GMA 345 Contains IC 5123A BGTWT32I NOTE This device complies with Innovation Science and Economic Development Canada license exempt RSS standard s Operation is su...

Страница 16: ...Documents The following publications are sources of additional information for installing the GMA 342 345 The installer should read all referenced materials along with this manual before attempting in...

Страница 17: ...desired performance and reliability from the GMA 342 345 The guidance of FAA advisory circulars AC 43 13 1B and AC 43 13 2B where applicable may be found useful for making retro fit installations that...

Страница 18: ...00 Conn Kit GMA 342 345 also used for GMA 35 350 Table 2 5 011 02302 00 SMP Install Rack GMA 342 345 also used for GMA 240 340 115 00262 00 Table 2 4 Contents of GMA 342 345 Back Plate Kit 011 00678 0...

Страница 19: ...bundle Solder Sleeves for terminating the shields of the cable to the GMA 342 345 backshell See 190 00313 09 for part numbers Heat shrink tubing SD card needed for updating software in the GMA 342 34...

Страница 20: ...no headsets It is recommended that stereo jacks and stereo headsets be used 2 4 1 Auxiliary Inputs For the GMA 345 3 COM unit a single AUX button is used to select all 3 AUX inputs for simultaneous mo...

Страница 21: ...manufacturer s instructions If the antenna is being installed on a composite aircraft ground planes must sometimes be added Conductive wire mesh radials or thin aluminum sheets embedded in the compos...

Страница 22: ...eld to D Sub as short as possible Ensure the distance from the beginning of the exposed shield to D Sub is no more than 1 5 inches long Terminate the center conductor by directly connecting it to the...

Страница 23: ...Wiring Refer to the interconnect examples in Appendix C for wire gauge guidance In some cases a larger gauge wire such as AWG 18 or 20 may be needed for power connections If using AWG 18 barrel conta...

Страница 24: ...lation Option Section 2 8 4 2 8 1 Master Avionics Squelch MASQ Function MASQ functions to prevent low level noise from being passed to the headset ear speakers this is known as squelching or muting th...

Страница 25: ...Normally the Pilot will be positioned to the left in the Copilot s headset and the Copilot will be positioned to the right in the Pilot s headset When set to ON this setting reverses that so the Pilot...

Страница 26: ...ibility In moderate to lower noise cockpits the default filter usually provides better intelligibility Music During Isolation configuration changes the behavior of the PILOT and CREW isolation modes s...

Страница 27: ...DIBLY ANNUNCIATES SOFTWARE AND DATABASE PRODUCT VERSIONS BOOT BLOCK SYSTEM AUDIO AND BLUETOOTH ADJUSTMENTS PILOT USED FOR INCREASING LEVELS OR ENABLING OPTIONS CREW USED FOR DECREASING LEVELS OR DISAB...

Страница 28: ...audio into the GMA 342 345 while there is COM activity J3402 13 PASSENGER ICS KEY Input If DIP switch 1 is on this active low input when grounded will allow microphone audio to the intercom from Pass...

Страница 29: ...rd is connected to the PC in the SD card slot 9 Run the executable file that was downloaded and follow the prompts on the screen to create the software loader card 10 After the card has been created s...

Страница 30: ...e brought together care must be taken to minimize effects from coupled interference and ground loops Coupled interference can sneak into audio system interconnecting cables when they are routed near l...

Страница 31: ...gure 2 4 See Section 3 6 for installation instructions NOTE Rear support is recommended to ensure a sturdy mount CAUTION The top cover of the unit has a connector number 1 and 2 stamped into it and ce...

Страница 32: ...ubminiature connectors see Figure 3 1 Section 4 defines the electrical characteristics of all input and output signals Required connector and associated hardware are supplied in the connector kits Ref...

Страница 33: ...of the BNC connector 3 4 Shield Block Backshell Installation Instructions 3 4 1 Backshell Installation Parts The GMA 342 345 connector kit includes two Garmin backshell assemblies Garmin s backshell c...

Страница 34: ...inserting the GMA 342 345 into the rack This may damage the connectors unit and or rack If heavy resistance is felt during installation stop Remove the GMA 342 345 and identify the source of resistan...

Страница 35: ...ug contacts and is an inevitable consequence of plugging a mono headset into a stereo jack During power on operation this short will not damage the audio panel 3 Verify that COM1 transceiver can be he...

Страница 36: ...tooth annunciator flashes to indicate the GMA 345 is in pairing mode and Pairing Enabled audio is played Once the Bluetooth annunciator flashes the GMA is discoverable for two minutes or until a devic...

Страница 37: ...PA audio will still be delivered to the headsets CAUTION Be sure to check all aircraft control movements before flight is attempted to ensure that the wiring harness does not touch any moving part 3...

Страница 38: ...are off if no diagnostic information is available The image below depicts which button annunciators are associated with which diagnostic states NOTE The GMA 345 2 COM version is used as the example fo...

Страница 39: ...EL key for 5 seconds 2 An audio clip will be heard in the headset that says Bluetooth Disabled 3 To re enable Bluetooth connectivity without power cycling press and hold the TEL key for 5 seconds 4 An...

Страница 40: ...2 J3401 and J3402 pin assignments are given in Table 4 1 Table 4 2 and Appendix C Following the Table 4 1 Table 4 2 additional tables group pin connections by function An asterisk following a signal...

Страница 41: ...NAV 2 AUDIO IN LO 21 RCVR 3 AUDIO IN HI AUX 1 IN 22 RCVR 3 AUDIO IN LO AUX 1 23 RCVR 5 AUDIO IN HI AUX 3 IN 24 COM ACTIVE OUT OUT 25 RESERVED GMA 342 345 WIRED TEL AUDIO IN HI GMA 345 3 COM unit only...

Страница 42: ...PILOT HEADSET AUDIO OUT LEFT OUT 4 COPILOT HEADSET AUDIO OUT RIGHT OUT 5 LIGHTING BUS 14V LO 28V LO 6 LIGHTING BUS 14V HI 28V LO IN 7 LIGHTING BUS 14V HI 28V HI IN 8 AIRCRAFT POWER IN 9 AIRCRAFT POWER...

Страница 43: ...OPILOT ICS KEY IN 31 PILOT HEADSET AUDIO OUT RIGHT OUT 32 COPILOT MIC AUDIO IN HI IN 33 COPILOT MIC KEY IN IN 34 COPILOT MIC AUDIO IN LO 35 PASS 1 MIC AUDIO IN HI IN 36 PASS 1 MIC AUDIO IN LO 37 PASS...

Страница 44: ...n driving a standard RS232 load 4 6 Audio Inputs Outputs and Mic Keys 4 6 1 Mic Audio Inputs and Mic Keys Table 4 4 Lighting Bus Pin Connector Pin Name I O 5 J3402 LIGHTING BUS 14V LO 28V LO 6 J3402 L...

Страница 45: ...MIC AUDIO IN LO 39 J3402 PASS 3 MIC AUDIO IN HI Passenger 3 Mic audio and ground reference IN 40 J3402 PASS 3 MIC AUDIO IN LO 41 J3402 PASS 4 MIC AUDIO IN HI Passenger 4 Mic audio and ground referenc...

Страница 46: ...Table 4 8 COM Audio and Mic Keys GMA 345 3 COM unit only Pin Connector Pin Name Description I O 3 J3401 COM 3 AUDIO IN COM 3 Audio Input GMA 345 3 COM unit only IN 4 J3401 COM 3 AUDIO LO Ground Refer...

Страница 47: ...Audio Inputs Pin Connector Pin Name Description I O 21 J3401 RCVR 3 AUDIO IN HI AUX 1 RCVR 3 AUX 1 Audio Input IN 22 J3401 RCVR 3 AUDIO IN LO AUX 1 Ground Reference for RCVR 3 AUX 1 Input 7 J3401 RCV...

Страница 48: ...Music Inputs The MUSIC LO signals are not the same reference as other ground connections The MUSIC LO signals should be used as part of a differential pair along with the MUSIC RIGHT and MUSIC LEFT s...

Страница 49: ...to protect the GMA 342 345 headset output from driving a signal into a short and also for internal audio routing determined by the mono headset plugged into the headset jack In aircraft systems that u...

Страница 50: ...tor Pin Name Description I O 16 J3402 PILOT HEADSET AUDIO OUT LEFT Pilot Headset Audio Output OUT 31 J3402 PILOT HEADSET AUDIO OUT RIGHT OUT 1 J3402 PILOT HEADSET AUDIO OUT LO 3 J3402 COPILOT HEADSET...

Страница 51: ...nector Pin Name Description I O 16 J3401 PILOT ICS KEY Discrete Input IN 13 J3402 PASSENGER ICS KEY Discrete Input IN 20 J3402 COM SWAP Discrete Input IN 22 J3402 PLAY KEY Discrete Input IN 30 J3402 C...

Страница 52: ...are compatible and may be reused If replacing a GMA 340 with a GMA 342 345 the GMA 340 330 00220 25 connector backshells can be reused However grounding the wire shields to the GMA 342 345 will be ea...

Страница 53: ...GMA 342 345 NO CONNECT 29 COM 3 SPKR LOAD IN HI 23 MASQ INHIBIT IN 16 COM 3 SPKR LOAD IN LO 24 25 26 27 28 COM 1 SPKR LOAD IN HI COM 1 SPKR LOAD IN LO COM 2 SPKR LOAD IN HI COM 2 SPKR LOAD IN LO GMA...

Страница 54: ...INE AND INSTALLATION DRAWINGS Figure B 1 GMA 342 345 Outline Drawing 4 34 110 3 4X 025 0 64 200 5 08 100 CSK INSIDE RACK 4 PLACES PER SIDE 1 30 33 0 60 15 2 44 11 1 3 49 88 6 65 16 5 1 28 32 4 2X 35 8...

Страница 55: ...Revision 5 Page B 2 APPENDIX B OUTLINE AND INSTALLATION DRAWINGS Figure B 2 GMA 342 345 Installation Drawing GMA 342 345 BACK PLATE ALSO USED ON GMA 240 340 SUB ASSEMBLY 011 00678 00 GMA 342 345 CONNE...

Страница 56: ...OPTION 2 FROM BACK OF AIRCRAFT PANEL RADIO CUTOUT RACK INSTALLED THICKNESS IS 125 INCH 3 2 mm ONLY MAXIMUM AIRCRAFT PANEL OPTION 3 FROM FRONT OF AIRCRAFT PANEL OPTION 1 STACK CUTOUT RACK INSTALLED RA...

Страница 57: ...THAT HAVE HEADSET 14 DENOTES ACTIVE LOW 15 MONO ONLY HEADSET JACK CONNECTION DETAIL 16 USE A MINIMUM 10 WATT SPEAKER 1 UNLESS OTHERWISE INDICATED ALL SHIELDS MUST BE TERMINATED AT THE GMA END ONLY ALL...

Страница 58: ...HI TEL MIC AUDIO OUT HI ALERT 3 AUDIO IN HI ALERT 3 4 AUX 3 AUDIO LO AUX 3 AUDIO IN HI ALERT 3 4 AUX 3 AUDIO LO ALERT 3 4 AUX 3 AUDIO LO PILOT MIC AUDIO IN LO PILOT MIC AUDIO IN HI SEE NOTE 5 SEE NOTE...

Страница 59: ...33 32 35 36 37 38 39 40 41 42 24 23 25 44 43 20 12 19 8 9 10 11 15 29 22 ALERT 2 AUDIO IN HI FAILSAFE WARN AUDIO IN HI PLAY KEY IN 30 COPILOT ICS KEY IN 14 RS 232 IN RS 232 OUT 17 18 MUSIC 2 IN LO MU...

Страница 60: ...V HI 5 7 TO 14 VOLT LIGHTING BUS HI TO 14 VOLT LIGHTING BUS LO LIGHTING BUS 14V HI 28V LO 6 14 VOLT LIGHTING BUS LIGHTING BUS 14V LO 28V LO LIGHTING BUS 14V HI 28V HI 5 7 TO 28 VOLT LIGHTING BUS HI TO...

Страница 61: ...HI MONO CONNECTIONS PILOT HEADSET LO PILOT HEADSET RIGHT PILOT HEADSET LEFT 1 31 16 NC COPILOT HEADSET LO COPILOT HEADSET RIGHT COPILOT HEADSET LEFT 2 4 3 MUSIC 1 IN LO MUSIC 1 IN RIGHT MUSIC 1 IN LE...

Страница 62: ...5 Page C 6 APPENDIX C INTERCONNECT DRAWINGS Figure C 6 Four Passenger Headset Wiring Example Interconnect Drawing PASSENGER HEADSET PARALLEL WIRING PASS HEADSET LO PASS HEADSET RIGHT PASS HEADSET LEFT...

Страница 63: ...HIELD BLOCK USING RING CONNECTORS ALL SPLICES FROM LEMO JACK OCCUR AT GMA END OF HARNESS ALL SPLICES FROM LEMO JACK OCCUR AT GMA END OF HARNESS LEMO SHIELD WIRES CONNECT TO GMA SHIELD BLOCK USING RING...

Страница 64: ...T APPLICABLE TO 3 COM UNITS 0 4 3 J 5 4 3 2 4 3 A M G 16 DISCRETE 1 INPUT PILOT ICS KEY 1 MARKER ANTENNA HI 31 ALERT 1 AUDIO IN HI 17 NAV 1 AUDIO IN HI 30 DISCRETE 6 INPUT COPIILOT ICS KEY 15 ALERT 2...

Страница 65: ...ENNA HI 31 ALERT 1 AUDIO IN HI 17 NAV 1 AUDIO IN HI 30 DISCRETE 6 INPUT COPIILOT ICS KEY 15 ALERT 2 AUDIO IN HI 14 ALERT 2 LO FAILSAFE AUDIO IN LO 44 SPEAKER AUDIO OUT HI 13 DISCRETE 3 INPUT PASS ICS...

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