GMA 350/350H Installation Manual
Contents
1. 1 3 1 Physical Characteristics Characteristic Specification Bezel Height 1 30 inches 3 30 cm Bezel Width 6 25 inches 15 88 cm Rack Height Dimple to Dimple 1 33 inches 3 38 cm Rack Width 6 30 inches 16 00 cm Depth Behind Panel with Connectors 8 13 inches 20 65 measured from face of aircraft panel to rear of connector backshells Weight Unit Only 1 5 Ibs 0 7 kg Weight Installed with rack and connectors 2 4 Ibs 1 1 kg GMA 350 350H Installation Manual Page 1 3 190 01134 11 Revision 1 3 2 Electrical Characteristics Characteristic Specification Environmental Compliance RTCA DO 160E and EUROCAE ED 14D Environmental Conditions Software Compliance RTCA DO 178B Level C and D Temperature Range 45 to 55 C normal operation 55 C to 70 C short term Altitude 55 000 Feet Audio Panel Functions Transceiver inputs 3 Receiver inputs 5 Alert unswitched inputs 5 Input impedance 600 Q Input isolation 60 dB minimum Maximum input signal 5 Vrms Intercom Functions Positions 6 or 7 pilot copilot 4 or 5 passengers ICS volume controls 3 pilot copilot passenger Manual ICS VOX level controls 1 shared control VOX processing individual processing for each mic input ICS auto squelch VOX independent DSP determined thresholds for each mic Entertainment Functions GMA 350 Stereo HiFi music inputs 32. IH NI OIGNV OIW I SSVd gt O1 NI OIGNV DIWI SSVd NA NI OIW 1O1IdOO e IH NI OIW 1 0 7 OT NI OIGNY OIW 10114095 1431 INO OIGNYV LASGV3H 1O1d40D 1HOIS INO OIGNV I3SGV3H IOlldOD Br 1431 INO OIGNYV I3SGV3H LO lld 1HOIS INO OIGNV I3SGV3H LOlld eU OT INO OIGNY LaSQVSH LO ld OTINO OIGNY I3SGV3H 101900 522 o AN TF 41 FI Og CC 6c Sl ll 01 61 cl OG el p br ez v ST Ly cw 6 Ov Ze 86 GE 96 ce CE ve 91 LE ZOSEF Figure B 5 GMA 350H J3502 Interconnects Page B 9 Page B 10 blank GMA 350 350H Installation Manual 190 01134 11 Rev B APPENDIX INTERCONNECT DRAWINGS 50 J3501 2 1 MARKER MARKER ANTENNA IN ANTENNA IN LO HI TEL AUDIO AUDIO OUT HI OUT HI TEL AUDIO IN TEL AUDIO LO HI 30 29 24 16 COM 2 MIC ALERT 3 COM ACTIVE AUX 3 AUDIO AUX 1 AUDIO AUX 1 AUDIO NAV 2 AUDIO NAV 2 AUDIO NAV 1 AUDIO NAV 1 AUDIO KEY OUT AUDIO IN HI OUT PTC ICS KEY IN 44 9 38 37 36 35 34 33 32 31 PASS PASS PASS ALERT 2 3 4 HEADSET HEADSET HEADSET MIDDLE MIDOLE OUTER INNER PILOT MIC PILOT MIC PILOT MIC ALERT 1 ALERT 1 MARKER MARKER MARKER MARKER AUDIO IN LO dag sayad SENSE OUT LAMP OUT LAMP OUT LAMP OUT AUDIO IN LO KEY IN AUDIO IN HI AUDIO IN LO AUDIO IN HI ALERT 4 AUDIO IN HI 50 J3502 15 14 13 12 11 10
3. 44 SPEAKER AUDIO OUT HI GMA 350 350H Installation Manual 190 01134 11 GMA350H J3501 KEY OUT AUDIO OUT HI KEY OUT AUDIO OUT HI TEL MIC OUT TEL MIC OUT TEL AUDIO IN TEL AUDIO IN COM ACTIVE AUX 3 AUDIO AUX 1 AUDIO AUX 1 AUDIO NAV 2 AUDIO NAV 2 AUDIO NAV 1 AUDIO NAV 1 AUDIO ALERT 2 3 4 AUDIO IN LO AUDIO OUT GMA350H J3502 RESERVED RESERVED RESERVED SWAP CYCLE 25 MUSIC 1 IN LO 0 3 AUDIO IN LO AUDIO IN HI 22 21 PLAY KEY IN 7 36 SPEAKER AUDIO OUT PASS 1 MIC COPILOT MIC COPILOT MIC COPILOT HEADSET AUDIO IN LO AUDIO IN HI AUDIO IN LO AUDIO IN HI AUDIO IN LO AUDIO IN HI AUDIO IN LO 2 1 16 PILOT PTC ICS KEY IN 34 33 32 31 PILOT MIC PILOT MIC ALERT 1 ALERT 1 KEY IN AUDIO IN HI AUDIO IN LO AUDIO IN HI 4 3 2 1 COPILOT COPILOT COPILOT PILOT HEADSET HEADSET HEADSET HEADSET AUDIO OUT AUDIO OUT AUDIO OUT AUDIO OUT LEFT LO LO 2 19 18 17 16 PA MODE HEADSET SELECTED RS 232 OUT RS 232 IN OUT AUDIO OUT LEFT 3 33 3 1 PILOT AUDIO OUT RIGHT KEY IN AUDIO IN HI Figure B 7 GMA 350H J3501 amp J3502 Connector Layout Drawing Page B 13 Page B 14 blank Rev B APPENDIX INTERCONNECT DRAWINGS Reor Of Unit J3501 J3502 Figure B 8 GMA 350 350H J3501 amp J3502 Connector Layout Drawing GMA 350 350H Installation Manual P
4. oipny IH INO OIW 131 O1NI OIGNV 131 IH NI 131 INO WOO ajqDIjddy Jo Indu Duu luv uooSD g JAIDW UU JS S TALO 114 JOJEDIPUI 1X3 u v A syop y o dn I lid KN 1 paw L FN omoszxnv eoinos OIPDA ZAYN LAWN J AI OSUD1I WOO J AISOSUDI Na WOO H NI SOI O1d 10114 OT NI VNN3INV XAW CJ IH NI 3333VW ONT GND INO ASNAS A3YIYW 31GGIW INO 3332JVW 31GGIW INO dWV1 3332JVW a31noO INO dWV1 3332JVW JINNI 1431 INO OIGNYV I3SGVdH SSVd IHOld INO OIQNY I3SGV3H SSVd OT INO I3SGV3H SSVd NI OIW LOTld IH NI OIGNY OIW 1O1ld OT NI OIGNV OIW IO1ld IH NI XNV NI OIGNV 14317 O1NI OIGNV c 1331V IH NI OIGNV 1331V O1 NI OIGNV I 1331V IH NI OIGNV I 1831 OT NI OIGNV XNV IH NI XNV O1 NI OIGNV L XNV IH NIOIGNV L O1 NI AVN IH NI OIGNV AVN O1 NI OIGNV 1 IH NI OIGNV I AYN INO DIN WOO IH INO OIGNV DIN WOO r ILON 33S OT OIGNV WOO IH NI OIGAY WOO INO DIN WOO IH INO OIGNV DIN WOO r ALON 335 OIGnv WOO IH NI OIGNV Z WOO INO DIN 1 WOO OIGNV OIW I WOOD t
5. two rear connectors and one front panel jack GMA 350H Stereo HiFi music inputs 2 one rear connector and one front panel jack Telephone interfaces 2 one rear connector and one front panel jack Music and TEL sources individually distributable independent of ICS modes to allow any combination of source to ICS position distribution Combined with independent ICS mode selection any ICS position can have private TEL conversations or conference conversations of any combination Headphone Outputs Output amplifiers 3 stereo pilot copilot passengers Power Load and Distortion 65 mW into 150 Ohms with lt 10 THD N 10 output lt 3 THD N Typical Operating Distortion lt 1 THD N 3dB Frequency Response Bandwidth 20 Hz to 20 kHz for Music 350 Hz to 6 5 kHz for Other Audio MICs Radios Alerts Depends on configuration settings Page 1 4 Revision A GMA 350 350H Installation Manual 190 01134 11 Characteristic Speaker Output Specification Outputs 1 pilot selectable Power output Rated load and Power input voltage Aircraft Voltage Speaker Impedance Output Power 14 V 8 Ohms Not recommended 14V 4 Ohms 28 V 8 Ohms 7 W 28 V 4 Ohms 10 W Distortion lt 10 THD N full power lt 3 THD N 10 power 3dB Frequency Response Bandwidth 350 Hz to 6 5 kHz Marker Beacon Receiver Frequency Crystal controlled at 75 MHz Sensitivity LO 1000 HV hard HI 200 u
6. additional information please refer to our web site at www garmin com prop65 Page ii GMA 350 350H Installation Manual Revision B 190 01134 11 TABLE OF CONTENTS PARAGRAPH 1 GENERAL DESCRIPTION secerni giet uati ANA 1 iepen ut tilts eden ut usah 1 2 Eguipment DDescriptiOll 1 3 Technical Specifications 2 1 4 Certifications 23 h u R hun aia ae sele 1 5 Reference Documents ieu tuan uu auqa niyun aaa salads 1 6 Limited W manty S AA 2 INSTALLATION 2 1 AA 2 2 Installation MateralSu La GANANG AE 2 3 Installation Considerations 2 4 Cabling ah ail ah eae 2 5 COON GAM uskadet S usan aka eh 2 0 Mounting Requirements NA NAA 2 7 Installation Approval Considerations for Pressurized Aircraft 2 811 Electrical NOISE ize uy am awam aS Y RYD FF 3 INSTALLATION PROCEDURE S l Unpacking Untu ua ana one am NANANA LA 3 2 Install HON uuu u a 2 D q l qas 3 3 Antenna Cable ConnectOl 8i 3 4 Electrical CONE NONS Lu m S aa aap akaqa 3 5 gt Backshell Assembly eu iu n a CGG h ang 3 6 GMA 350 350H Unit Installation III Lion 3
7. drawings The installer must provide any additional remote mounting equipment To ensure a sturdy mount rear support is highly recommended Figure 2 2 GMA 350 350H Unit Rack GMA 350 350H Installation Manual Page 2 5 190 01134 11 Rev B 2 7 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 incorporate alteration penetration of the cabin pressure vessel by connector holes and or mounting arrangements For needed engineering support pertaining to the design and approval of such pressurized aircraft antenna installations it is recommended that the installer proceed according to any of the following listed alternatives Obtain approved antenna installation design data from the aircraft manufacturer Obtain an FAA approved Supplemental Type Certificate STC pertaining to and valid for the subject antenna installation 3 Contact the FAA Aircraft Certification Office in the appropriate Region and request identification of FAA Designated Engineering Representatives DERs who are authorized to prepare and approve the required antenna installation engineering data 4 Locate an appropriate consultant FAA DER by reviewing the FAA Consultant DER Directory which can be found at the FAA Designee and Delegation web page 5 Contact an aviation in
8. independent of isolation modes e Any combination of private or conference telephone conversations available e User toggling of muting features o Mute passenger mic audio to crew during COM RX o Monitor Mute mute other selected COM s during transmit selected COM RX o Mute Music during selected audio RX o Mute TEL during selected audio RX Copilot can be configured as a passenger e Front panel jack for music or telephone input stereo smart phone compatible e Clearance recorder with playback e Individual processing of muting thresholds for inputs to reduce noise from wiring e Marker beacon receiver with SmartMute audio muting Split COM mode for GMA 350H 1 2 1 3 and 2 3 splits allowed pilot gets lower COM number e COM swap input for GMA 350H cycles through all three COMs e PA mode for keyed addressing to speaker and headsets Power off fail safe connection for Pilot PTT Pilot mic and Pilot s Headset Left to COM 1 Depends on configuration settings Page 1 2 GMA 350 350H Installation Manual Revision A 190 01134 11 1 3 Technical Specifications It is the responsibility of the installing agency to obtain the latest revision of the GMA 350 350H Environmental Qualification Form This form is available directly from Garmin under the following part number GMA 350 Environmental Qualification Form Garmin part number 005 00593 01 To obtain a copy of this form see the dealer OEM portion of the Garmin web site www garmin com
9. inputs On the outputs the GMA 350 350H features high quality digital to analog converters and headset amplifier circuits that are used to minimize noise and distortion The GMA 350 350H provides a speaker output that may be used as a cockpit speaker or for a PA system to address passengers The GMA 350 350H also includes a digital recording and playback feature The GMA 350 350H allows ICS volume adjustments for pilot copilot and passenger Additionally there is a volume adjustment for the MKR AUX MUSIC and TEL sources GARMIN v v bd bedd bedd bed bedd COM1 COM2 NAVI NAV2 J MUSI MUS2 MIC1 MIC2 PLAY AUX PILOT COPLT PASS USPUT cow PA DISTRIBUTE Figure 1 1 GMA 350 Unit View GARMIN GMA 350 Figure 1 2 GMA 350H Unit View GMA 350 350H Installation Manual Page 1 1 190 01134 11 Revision A 1 2 1 Features Summary e 3D Audio In panel configurable e Voice commands and voice feedback e Supports both DSP intercom auto squelch and manual intercom squelch modes e DSP audio processing for low noise high fidelity highly configurable and upgradeable operation e In flight volume control with bar annunciation for all selectable sources except COMs and NAVs e Six Seven position intercom pilot copilot four five passengers with five isolation modes e Remote toggling of passenger isolation supported passengers can change their ICS ISO state e User selectable MUSIC TEL input distribution to ICS positions
10. lamps are installed verify that each marker tone illuminates the proper lamp Outer Marker Blue Lamp 400 Hz AM or received audio tone Middle Marker Amber Lamp 1300 Hz AM or received audio tone Inner Marker White Lamp 3000 Hz AM or received audio tone If the system is configured and or wired to allow both HI and LO sensitivity operation verify that during HI SENS operation the RF threshold is more sensitive marker audio indication occurs as a lower RF power 3 8 8 Other Optionally Installed or Configured Inputs Outputs Verify any other installed configured inputs and outputs operate as described in the applicable pilot s guide Possible examples include PTC voice command Push to Command keys ICS keys Passenger ISO isolation toggle key clearance recorder Play key PA Mute output PA Mode Selected output Com Active output and Middle Marker Sense output Page 3 6 Revision B GMA 350 350H Installation Manual 190 01134 11 3 9 Continued Airworthiness Other than for regulatory periodic functional checks maintenance of the GMA 350 350H is on condition only GMA 350 350H Installation Manual Page 3 7 190 01134 11 Revision B This page intentionally left blank Page 3 8 GMA 350 350H Installation Manual Revision B 190 01134 11 4 SYSTEMINTERCONNECTS 4 1 Pin Function List 4 1 1 P3501 Connector View of J3501 connector from back of unit 15 14 13 12 11 10 9 8 7 6
11. may also be necessary to push the pin out from the face of the connector when using an extractor due to the absence of the wire new contact must be used when reassembling the connector 3 For applications using 16 AWG wire contact Garmin for information regarding connector crimp positioner tooling 3 5 Backshell Assembly The GMA 350 350H connector kit includes two Garmin backshell assemblies Garmin s backshell connectors give the installer the ability to guickly and easily terminate shield grounds at the backshell housing using the Shield Block To assemble the backshell connectors and grounding system refer to instructions provided in the Shield Block Installation Instructions 190 00313 09 Page 3 2 GMA 350 350H Installation Manual Revision B 190 01134 11 3 6 GMA 350 350H Unit Installation Do not use excessive force when inserting the GMA 350 350H into the rack This may damage the connectors unit and or unit rack If heavy resistance is felt during installation stop Remove the GMA 350 350H and identify the source of resistance For final installation and assembly refer to the outline and installation drawings shown in Appendix of this manual 3 7 Sd rc Assemble the backshell as described in Section 3 5 Connect both backshells to the rear plate using the screws provided in the connector kit Mount the unit rack to a suitable mounting location on the panel using the provided nutplates Assemble the
12. 01134 11 4 22 Power 4 2 1 Aircraft Power Pin Connector Pin VO AIRGRAFT POWER P3502 8 In AIRCRAFT POWER P3502 9 In POWER GROUND P3502 10 POWER GROUND P3502 11 4 3 Serial Data 4 3 1 RS 232 Pin Connector Pin VO RS 232 IN P3502 RS 232 OUT P3502 The RS 232 outputs conform to Standard RS 232C with an output voltage swing of at least 25V when driving a standard RS 232 load 4 4 Lighting Pin Name Connector Pin VO LIGHTING BUS IN P3502 LIGHTING BUS IN LO P3502 GMA 350 350H Installation Manual Page 4 5 190 01134 11 Revision B 4 5 Audio Inputs and Outptus 4 5 1 COM Audio Inputs and Outputs COM 1 AUDIO IN HI COM 1 AUDIO LO COM 2 AUDIO IN HI COM 2 AUDIO LO COM 3 AUDIO IN HI GMA 350H Only COM 3 AUDIO LO GMA 350H Only COM 1 MIC AUDIO OUT HI COM 2 MIC AUDIO OUT HI COM 3 MIC AUDIO OUT HI GMA 350H 4 5 2 NAV Audio Inputs NAV 1 AUDIO IN HI NAV 1 AUDIO LO NAV 2 AUDIO IN HI NAV 2 AUDIO LO 4 5 3 Receiver Audio Inputs RCVR 3 AUDIO IN HI RCVR 3 AUDIO IN LO RCVR 4 AUDIO IN HI RCVR 4 AUDIO IN LO RCVR 5 AUDIO IN HI 4 5 4 Telephone GMA 350H Pin Name Connector TEL AUDIO IN HI P3501 TEL AUDIO IN LO P3501 TEL MIC OUT HI P3501 TEL MIC OUT LO P3501 4 5 5 Telephone GMA 350 TEL AUDIO IN HI P3501 3 if TEL AUDIO LO P350
13. 1 TEL AUDIO OUT HI P3501 Page 4 6 GMA 350 350H Installation Manual Revision B 190 01134 11 4 5 6 Pilot Copilot PILOT MIC AUDIO IN HI PILOT MIC AUDIO IN LO COPILOT MIC AUDIO IN HI COPILOT MIC AUDIO IN LO PILOT HEADSET AUDIO OUT LO PILOT HEADSET AUDIO OUT LEFT PILOT HEADSET AUDIO OUT RIGHT COPILOT HEADSET AUDIO OUT LO COPILOT HEADSET AUDIO OUT LEFT COPILOT HEADSET AUDIO OUT RIGHT 4 5 7 Passenger Pin Name Connector PASS 1 MIC AUDIO IN HI PASS 1 MIC AUDIO IN LO PASS 2 MIC AUDIO IN HI PASS 2 MIC AUDIO IN LO PASS 3 MIC AUDIO IN HI PASS 3 MIC AUDIO IN LO PASS 4 MIC AUDIO IN HI PASS 4 MIC AUDIO IN LO PASS HEADSET AUDIO OUT LEFT PASS HEADSET AUDIO OUT RIGHT PASS HEADSET AUDIO OUT LO 4 5 8 Alert Inputs Pin Name Connector ALERT 1 AUDIO IN ALERT 1 AUDIO IN LO ALERT 2 AUDIO IN ALERT 2 3 4 AUDIO IN LO ALERT 3 AUDIO IN ALERT 4 AUDIO IN HI 4 5 9 Speaker Outputs Connector Pin VO SPEAKER AUDIO OUT LO P3502 43 Out SPEAKER AUDIO OUT P3502 44 Out GMA 350 350H Installation Manual Page 4 7 190 01134 11 Revision B 4 6 Music Inputs MUSIC 1 IN LEFT 23 In MUSIC 1 IN RIGHT 24 MUSIC 1 INLO 25 MUSIC 2 IN LEFT GMA 350 Only 26 MUSIC 2 IN RIGHT GMA 350 Only 27 MUSIC 2 IN LO GMA 350 28 4 7 Mic Keys COM 1 MIC KEY OUT P
14. 3501 COM 2 MIC KEY OUT P3501 COM 3 MIC KEY OUT GMA 350H Only P3501 PILOT MIC KEY IN P3501 COPILOT MIC KEY IN P3502 4 8 Marker Beacon MARKER ANTENNA IN HI P3501 1 MARKER ANTENNA IN LO P3501 2 INNER MARKER LAMP OUT P3501 36 OUTER MARKER LAMP OUT MIDDLE MARKER LAMP OUT MIDDLE MARKER SENSE OUT MARKER HI SENS IN Page 4 8 GMA 350 350H Installation Manual Revision B 190 01134 11 APPENDIX OUTLINE AND INSTALLATION DRAWINGS 6 25 158 8 ki GMA 350 350H Installation Manual 190 01134 11 6 30 160 0 1 3 15 80 0 35 8 9 65 16 5 2X 95 24 1 55 140 1 1 1 33 33 7 125 3 2 3 35 85 1 6 26 159 0 7 80 198 0 8 13 206 5 2X 44 11 1 3 93 99 7 5 60 142 2 i 1 33 33 7 Figure A 1 GMA 350 350H Outline Drawing Page A 1 Page A 2 blank Rev B APPENDIX OUTLINE AND INSTALLATION DRAWINGS 211 60234 08 4 PLCS 211 63234 08 2 Ng se 6 PLCS amp et ET San 5 117 00147 00 2 a AN 4 PLCS 211 63234 11 2 4 PLCS 125 00083 00 2 2 PLCS 125 00040 00 1 330 00185 44 2 115 00500 02 2 2 PLCS 2 PLCS 115 00499 02 2 2 PLCS 211 63234 06 2 4 PLCS 211 60234 10 2 a PLCS NOTES PART OF 011 02300 00 BACKPLATE ASSY PART OF 011 02302 00 CONNECTOR KIT Figure A 2 GMA 350 350H Connector Rack Assembly Drawing GMA 3
15. 5 4 3 2 1 0000000000 0 30 29 28 27 26 25 24 23 22 21 20 18 17 16 44 43 42 41 40 39 38 37 36 35 34 33 32 31 1 1 O MARKER ANTENNA IN HI In In 2 MARKER ANTENNA IN LO TEL AUDIO IN HI COM 3 AUDIO IN HI GMA 350H Onl TEL AUDIO LO COM 3 AUDIO LO GMA 350H Only TEL AUDIO OUT HI COM 3 MIC AUDIO OUT HI GMA 350H Onl RESERVED COM 3 MIC KEY OUT GMA 350H Onl AUX 2 AUDIO IN HI AUX 2 AUDIO IN LO ga 9 COM 1 AUDIO IN HI In 10 COM 1 AUDIO LO 12 COM 1 MIC KEY OUT 13 COM 2 AUDIO IN HI In 14 COM 2 AUDIO LO 23 15 COM 2 AUDIO OUT HI PILOT PTC ICS KEY NAV 1 AUDIO IN HI NAV 1 AUDIO IN LO 24 COM ACTIVE OUT RESERVED TEL AUDIO IN LO GMA 350H Only RESERVED TEL MIC OUT HI GMA 350H Only RESERVED TEL MIC OUT LO GMA 350H Only 27 28 16 17 18 19 NAVZAUDIOINH mn 20 21 2 3 IN In In in in RESERVED TEL AUDIO IN HI GMA 350H Onl n 26 Out In Out Out 29 ALERT 3 AUDIO IN HI In 30 COM 2 MIC KEY OUT Out 31 ALERT 1 AUDIO IN HI In GMA 350 350H Installation Manual 190 01134 11 Page 4 1 Revision B Connector P3501 continued Pin Name ALERT 1 AUDIO IN LO PILOT MIC AUDIO IN HI PILOT MIC KEY IN PILOT MIC AUDIO IN LO INNER MARKER LAMP OUT OUTER MARKER LAMP OUT MIDDLE MARKER LAMP OUT MIDDLE MARKER SENSE OUT PASS HEADSET AUDIO OUT LEFT PASS HE
16. 50 350H Installation Manual 190 01134 11 Page A 3 Page A 4 blank Rev B APPENDIX OUTLINE AND INSTALLATION DRAWINGS OPTION 1 STACK CUTOUT RACK INSTALLED FROM FRONT OF AIRCRAFT PANEL OPTION 2 RADIO CUTOUT RACK INSTALLED FROM FRONT OF AIRCRAFT PANEL OPTION 3 RADIO CUTOUT RACK INSTALLED FROM BACK OF AIRCRAFT PANEL ONLY MAXIMUM AIRCRAFT PANEL THICKNESS IS 125 INCH 3 2 mm GMA 350 350H Installation Manual 190 01134 11 1 33133 8 1 25131 8 2 78 70 5 75 19 1 2 72 69 0 75 19 1 6 30 160 0 0511 3 2 78 70 5 6 30 160 0 r 05L1 3 2 72 690 6 18 157 0 NOTES 1 DIMENSIONS INCH mm 2 IF THE FRONT LIP OF THE MOUNTING RACK IS BEHIND THE SURFACE OF THE AIRCRAFT PANEL THE UNIT CONNECTORS MAY NOT FULLY ENGAGE Figure A 3 Recommended Panel Cutout Drawings Page A 5 Page A 6 blank Rev B APPENDIX INTERCONNECT DRAWINGS GMA 350 350H Installation Manual 190 01134 11 NOTES UNLESS OTHERWISE INDICATED ALL SHIELDS MUST BE TERMINATED AT THE GMA END ONLY ALL WIRES ARE 24 AWG OR LARGER TEFLON INSULATED EXCEPT FOR THE FOLLOWING 13502 pins 8 9 10 11 43 44 AWG 22 TEFLON INSULATED ALL HEADSET MICROPHONE AND MUSIC PHONE PLUGS MUST BE ELECTRICALLY ISOLATED FROM GROUND THIS MAY REQUIRE THE USE OF INSULATING WASHERS WHEN MOUNTING THE PHONE PLUGS ADDITIONALLY THE SPEAKER RETURN MUST BE ISOLATED FROM GROUND IF THE TRANSCEIVER HAS A SEPA
17. 6 4 3 2 1 PASS ISO COPILOT COPILOT COPILOT PILOT ALERT 2 TOGGLE ICS MARKER HI PA MUTE AIRCRAFT AIRCRAFT AIRCRAFT AIRCRAFT LIGHTING RESERVED LIGHTING HEADSET HEADSET HEADSET HEADSET AUDIO IN HI KEY IN SENS IN OUT GROUND GROUND POWER POWER BUS IN HI BUS INLO AUDIO OUT AUDIO OUT AUDIO OUT AUDIO OUT RIGHT LEFT LO LO 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 COPILOT FAILSAFE PA MODE PLOT MUSIC 2 IN MUSIC 2 IN MUSIC 1 IN MUSIC 1 IN SWAP HEADSET er yD MUSIC 2 IN LO RIGHT LEFT MUSIC 1 IN LO RIGHT LEFT PLAY KEY IN RESERVED IN Er RS 232 OUT RS 232 IN AUDIO OUT LEFT 44 43 42 41 40 39 38 37 36 31 PILOT HEADSET AUDIO OUT RIGHT SPEAKER SPEAKER PASS 4 MIC PASS4MIC PASS 3 MIC AUDIO OUT HI AUDIO IN LO AUDIO IN HI PASS 3 MIC PASS2MIC PASS 2 MIC AUDIO IN LO AUDIO IN HI AUDIO IN LO AUDIO IN HI PASS 1 MIC PASS 1 MIC COPILOT MIC COPILOT MIC COPILOT MIC AUDIO IN LO AUDIO IN HI AUDIO IN LO AUDIO IN HI Figure B 6 GMA 350 J3501 amp J3502 Connector Layout Drawing GMA 350 350H Installation Manual Page B 11 Page B 12 blank 190 01134 11 Rev B APPENDIX INTERCONNECT DRAWINGS AUDIO OUT HI 30 29 COM 2 MIC ALERT 3 KEY OUT AUDIO IN HI 44 ALERT 4 AUDIO IN HI 15 14 PASS ISO ALERT 2 MARKER TOGGLE ICS AUDIO IN HI SENS IN KEY IN 30 29 COPILOT FAILSAFE PTC ICS KEY WARN AUDIO IN IN HI
18. 7 Post Installation Configuration 3 8 Post Installation Checkout 3 8 Continued Airworthiness 4 SYSTEM 8 4 1 2 1 1 02 02 20 000 040 045 60 E SS 41 Pin Function A NAA AAAA 42 1 RW GW WD w ess JA AA 4 5 Audio Inputs and G a a AQ pa Dr NG Ua 47 MIC aa l EEEE pa a ah pa qu ANSER 4 8 Marker Beacon iu nu kaha apa han uu hu Papa NG GMA 350 350H Installation Manual 190 01134 11 Page iii Revision B PARAGRAPH PAGE APPENDIX A OUTLINE AND INSTALLATION 8 1 APPENDIX B INTERCONNECT DRAWINGS 222 B 1 LIST OF ILLUSTRATIONS FIGURE PAGE Tl GMAc350 Unit VIEW kaa coe EAE EEEE 1 1 1 2 GMA 350H Unit VIEW iii ue ge Ke nede in EY uuu Ig 1 1 2 1 GMA Marker Beacon Coaxial Cable D Sub 2 3 2 2 GMAc 350 350H Unit R ck Ge GU RR YRRU GRIF a u u us 2 5 A 1 GMA 350 350H Outline Drawing ergo 1 2 GMA 350 350H Connector
19. 871 11 Includes GMA 35 Connector Kit 011 02302 00 GMA 350 Install Rack 115 01452 00 and GMA 35 Backplate 011 02300 00 2 2 1 Equipment Available Each of the following accessories is provided separately for the GMA 350 unit Item Garmin P N Connector Kit GMA 35 011 02302 00 Backplate GMA 35 011 02300 00 Install Rack GMA 350 115 01452 00 2 2 2 Additional Equipment Required Hardware 46 32 100 Flat Head SS Screw MS24693 AN507R or other approved fastener 6 ea and 46 32 Self Locking Nut MS21042 or other approved fastener 6 ea Hardware required to mount the installation rack is not provided GMA 350 350H Installation Manual Page 2 1 190 01134 11 Rev B 2 3 Installation Considerations The GMA 350 350H interfaces with various avionics equipment Fabrication of wiring harness is required Sound mechanical and electrical methods and practices are required for installation of the GMA 350 350H 2 3 1 Marker Beacon Antenna Installation 2 3 1 1 Location Considerations The marker beacon antenna should be mounted on a flat surface on the underside of the aircraft body Do not install the antenna inside the aircraft Installing the antenna inside the aircraft limits the antenna reception and increases the antennas susceptibility to radiation from components inside the aircraft Mount the antenna so that there is minimum of structure between it and the ground radio statio
20. A GARMIN GMA 350 350H Installation Manual 190 01134 11 May 2011 Revision B Copyright 2011 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 without the express prior written consent of Garmin Garmin hereby grants permission to download a single copy of this manual and of any revision to this manual onto a hard drive or other electronic storage medium to be viewed and to print one copy of this manual or of any revision hereto provided that such electronic or printed copy of this manual or revision must contain the complete text of this copyright notice and provided further that any unauthorized commercial distribution of this manual or any revision hereto is strictly prohibited Garmin International Inc 1200 E 151 Street Olathe KS 66062 USA Telephone 913 397 8200 Aviation Dealer Technical Support Line Toll Free 888 606 5482 www garmin com Garmin Europe Ltd Liberty House Bulls Copse Road Hounsdown Business Park Southampton SO40 9RB UK Telephone 44 0 8708501241 RECORD OF REVISIONS Revision Description Date P 1 20 11 Production Release 5 10 14 Added reference to Configuration Tool and added new mechanical drawing Page A GMA 350 350H Installation Manual Revision B 190 01134 11 CURRENT REVISION
21. ADSET AUDIO OUT RIGHT PASS HEADSET AUDIO OUT LO ALERT 2 3 4 AUDIO IN LO ALERT 4 AUDIO IN HI Indicates Active Low Page 4 2 GMA 350 350H Installation Manual Revision B 190 01134 11 4 1 2 P3502 Connector View of J3502 connector from back of unit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0000000000000 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 0000000 44 43 42 41 40 39 38 37 36 35 34 33 32 31 5 Pin Name I O PILOT HEADSET AUDIO OUT LO Out COPILOT HEADSET AUDIO OUT LEFT Out 12 PA MUTE OUT Out 13 In 14 PASS ISO TOGGLE ICS KEY IN In 15 ALERT 2 AUDIO IN HI In COM SWAP IN GMA 350 Only COM SWAP CYCLE IN GMA 350H Only In 20 2 MUSIC 1 IN LEFT 3 In 24 MUSIC 1 IN RIGHT In 25 MUSIC 1 INLO In 26 RESERVED MUSIC 2 IN LEFT GMA 350 Onl In In 8 MUSIC 2 IN RIGHT GMA 350 Onl og RESERVED MUSIC 2 IN LO GMA 350 Only 29 FAILSAFE WARN AUDIO IN HI 32 COPILOT MIC AUDIO IN HI In 33 COPILOT MIC KEY IN In 34 COPILOT MIC AUDIO IN LO GMA 350 350H Installation Manual Page 4 3 190 01134 11 Revision B PASS 1 MIC AUDIO IN HI PASS 1 MIC AUDIO IN LO PASS 2 MIC AUDIO IN HI PASS 2 MIC AUDIO IN LO PASS 3 MIC AUDIO IN HI PASS 3 MIC AUDIO IN LO PASS 4 MIC AUDIO IN HI PASS 4 MIC AUDIO IN LO SPEAKER AUDIO OUT LO SPEAKER AUDIO OUT HI Indicates Active Low Page 4 4 GMA 350 350H Installation Manual Revision B 190
22. ALON 33S J AI OSUD11 gt IWOO f O1OIGnv I WOO IH NI OIGNY L WOO 1 GE 8T JI A 9 OH sc CJ 6 8 LE 9 O ov i zr ve E T Og Sl WF EL Figure B 4 GMA 350H J3501 Interconnects Page B 7 Page B 8 blank GMA 350 350H Installation Manual 190 01134 11 Rev B APPENDIX INTERCONNECT DRAWINGS GMA 350H Interconnects refer to B 2 and B 3 for GMA 350 interconnects ME WID XXZ NIO OIPNY x 1NO TET S Aae L sng sng JOMOd HOJDIIY 1X3 0 aynw Jayoeds e N NI ZET SY le NI SOI 315SSO1 OSI SSVd NI SOI O1d 10114402 e NI Ad AV ld Uld LOSET IH NI OIGNY NYVM 34VS1IVJ 5 Uld Loser IH NI LJV IH 518 ONILHON OT NI 509 ONILHON ANNONS N ANNONS JIMOd Vi Y3MOd l4VNONIV El ON NIMOd 14VHDUIV 100 G310319 AGOW INO 3LNW Wd i NI 312A2 dYVMS WOO NI SN3S IH JINAYW HA OT INO AIYXV3IdS IH INO OIGNV JIYV3dS 1431 NI LOISnW LHOI NI I DISNW OTNI I DISAW IH NI OIW r SSVd NI DIN SSVd OIW SSVd lt gt OT NI OIGNY DIW SSVd A NI OIGNY OIW SSVd O1NI OIGNV DIW SSVd
23. DESCRIPTION Page Section pevislon Number s Number Description of Change Clarified number of intercom positions and added 3D Audio Clarified number of intercom positions Added reference to the GMA 350 350H Configuration Tool User s Guide Added configuration summary Edited name of pin 44 Edited name of pin 44 Edited name of pin 44 Edited name of pin 44 Added connector layout drawing DOCUMENT PAGINATION Section Page Range Table of Contents i vi Section 1 Section 2 Section 3 Section 4 Appendix A Appendix B GMA 350 350H Installation Manual 190 01134 11 Page i Revision B INFORMATION SUBJECT TO EXPORT CONTROL LAWS This document may contain information which is subject to the Export Administration Regulations EAR issued by the United States Department of Commerce 15 CFR Chapter VII Subchapter and which may not be exported released or disclosed to foreign nationals inside or outside the United States without first obtaining an export license The preceding statement is required to be included on any and all reproductions in whole or in part of this manual This product its packaging and its components contain chemicals known to the state of California to cause cancer birth defects or reproductive harm This notice is being provided in accordance with Californias proposition 65 If you have any questions or would like
24. E THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS WHICH MAY VARY FROM STATE TO STATE IN NO EVENT SHALL GARMIN BE LIABLE FOR ANY INCIDENTAL SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES WHETHER RESULTING FROM THE USE MISUSE OR INABILITY TO USE THE PRODUCT OR FROM DEFECTS IN THE PRODUCT SOME STATES DO NOT ALLOW THE EXCLUSION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES SO THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU Garmin retains the exclusive right to repair or replace with a new or newly overhauled replacement product the product or software or offer a full refund of the purchase price at its sole discretion SUCH REMEDY SHALL BE YOUR SOLE AND EXCLUSIVE REMEDY FOR ANY BREACH OF WARRANTY Online Auction Purchases Products purchased through online auctions are not eligible for warranty coverage Online auction confirmations are not accepted for warranty verification To obtain warranty service an original or copy of the sales receipt from the original retailer is required Garmin will not replace missing components from any package purchased through an online auction International Purchases A separate warranty may be provided by international distributors for devices purchased outside the United States depending on the country If applicable this warranty is provided by the local in country distributor and this distributor provides local service for your device Distributor warranties are only valid in the area of intended distribution Devices pur
25. I OSUD1I WOO OT NI OIGNV c 1331V IH NI 1331V O1NI OIGNV I 1831V IH NI OIGNV I 1831V gt OT NI OIGNY XNV IH NI OIGNV XNV O1 NI OIGNV I XNV IH NI I OT NI OIGNV AVN IH NI OIGNV Z AVN OT NI OIGNV I AVN IH NI OIGNV 1 AVN IH INO OIGNV 131 r 3ION 33S OT OIGNYV 131 IH NI 131 INO DIN WOO IH INO OIW WOO r ALON 33S Z WOO IH NI OIGnV WOO INO OIW 1 WOO IH OIW I WOD J AI OSUD1I INOO f r 31ON 335 O1OIGnv I WOO IH NI WOO yc 6 Z 9 OV ve EE SE q et 6 CE LE 1 12 OG l 81 41 Og 1 Sl wa vl l Figure B 2 GMA 350 J3501 Interconnects Page B 3 Page B 4 blank GMA 350 350H Installation Manual 190 01134 11 Rev B APPENDIX INTERCONNECT DRAWINGS GMA 350 Interconnects refer to B 4 and B 5 for GMA 350H interconnects MEG VID XXZ NID uluuoc OIPNY 9Jps lDJ 1X3 01 196BuI ejnw H olpnv paly INO 0602 54 NI ZET SY NI A33 SOI 31001 OSI SSVd le NI AVId ey Uld LOGEN IH NAYM 34VSTIV3 KA Uld LOSES sng Hooy 9 JOMOd IH NI ONY LAITV 509 ONILHON OT NI 509 ANNOY
26. RATE RETURN FOR AUDIO IN AND AUDIO OUT BOTH TO GMA AUDIO LO AT THE GMA SYMBOL DESIGNATIONS TWISTED SHIELD PAIR 15 SHIELD TERMINATED TO GROUND TWISTED SHIELDED 3 CONDUCTOR SHIELD TERMINATED TO GROUND I TWISTED SHIELDED PAIR SHIELD FLOATS TWISTED SHIELDED 3 CONDUCTOR TT SHIELD FLOATS UNIT GROUND t WIRE SPLICE CONNECTION e PUSH BUTTON SWITCH SINGLE POLE Figure B 1 Notes Page B 1 Page B 2 blank Rev B APPENDIX INTERCONNECT DRAWINGS GMA 350 Interconnects refer to B 4 and B 5 for GMA 350H interconnects 921unos ejgoojddy Jo uoopD9g 5 IALO TH 1OJDOIPuI 1X3 apod ui O e ud H o L eoinos XNV INO 4AILODV WOO NI SOI O1d 10114 OT NI VNN31NV JJW 7 IH NI VNN3INV 233323 VW ON GND INO 3SN3S AIYAYW 31GGIW INO dWV1 33323JVW 31GGIW INO dWV 1 AIYAYW YILNO INO dWYT JIINIYW JINNI 1431 INO OIGNY I3SGV3H SSVd 1HOI INO LASGW3H SSVd OT INO OIQNY I3SGVdH SSVd NI OIW 1011d IH NI OIW 1011d OT NI OIGNV OIW LOlld OTNI OIODV 1831V IH NI y Halv NI c is31V NI p 1331V Lely 924n0s Z 92Jn0S Xnv OIDDN ZAYN LAWN wWajsAs lt 11 J A
27. Rack Assembly Drawing 2 3 A 3 Recommended Panel Cutout A 5 B 1 Notes uansett B 1 B 2 GMA 35073501 Y GAF Dn B 3 B 3 GMA 350 J3502 Interconnects u san a AA LA B 5 B 4 GMA 350F 13501 Interconnects as un un unitarene NPA LA na ana B 7 B 5 GMA 35S0H J3502 Interconnects i au uu alte umu n Am u SD Ag B 9 B 6 GMA 350 J3501 amp J3502 Connector Layout Drawing a aaa B 11 B 7 GMA 350 J3501 amp J3502 Connector Layout Drawing asss B 13 B 8 GMA 350 350H J3501 amp J3502 Connector Layout Drawing B 15 Page iv GMA 350 350H Installation Manual Revision B 190 01134 11 LIST OF TABLES TABLE PAGE 2 1 Pin nd Crimp Tool Part Numbers aan L ulus Susu E iss 2 3 3 4 Pim Contact Par Numbers h FFYDD a ete doen eos NANANA 3 1 3 2 Recommended Crimp n as u a deus 3 2 GMA 350 350H Installation Manual Page v 190 01134 11 Revision B GMA 350 350H HARDWARE MOD LEVEL HISTORY The following table identifies hardware modification Mod Levels for the GMA 350 350H Audio Panel Mod Levels are listed with the associated service bulletin number service bulletin date and the purpose of the modification The table is current at the ti
28. S 33MOd N ANNOYS 33MOd SYS pm NIMOd LIVADYIY N3MOd 14VYDUIV INO G310313 3GOW Yd INO s31NW NI JIDAD d VMS WOO NI SN3S IH 323337 W OT INO 333Vv3dS IH INO OIGAV 3 345 e7 1431 NI Z OISnW er IHOI NI Z DISNW O1 NIZ OISnW oF 1431 NI LOISNW 1HOI NI I DISNW O1NI 1 DISNW IH NI OIGNY DIN SSVd OT NI OIGNY OIW 55 4 IH NI OIW 6 SSVd OT NI OIGNV OIW SSVd IH NI OIW SSVd OT NI OIGNV OIW SSVd IH NI DIN I SSVd OT NI OIGAV DIW I SSVd NI OIW 101402 e IH NI OIW 10114095 7 OT NI DIN IO1ldOD 1431 INO OIGNV 13SAv3H LOMdOD lHOIN INO OIGNY I3SGV3H 1011409 e 7 OT INO OIGNYV I3SAv3H 101400 Mg 1431 INO I3SGV3H IO lld 1HOIS INO OIGNY I3SGVdH 1O1ld 5 OT INO OIGNV I3SGV3H 10 lld Ll ZL 81 LA NI SOI O1d 1011400 Og CC 6c Sl LL Ol l zi OG l ev 9 LT 8c ET yc ST ly 6 Ov Ze GE 96 ce CE ve 91 LE ZOST Figure B 3 GMA 350 J3502 Interconnects Page B 5 Page B 6 blank GMA 350 350H Installation Manual 190 01134 11 Rev B APPENDIX INTERCONNECT DRAWINGS GMA 350H Interconnects refer to B 2 and B 3 for GMA 350 interconnects OT INO OIW 131 LY euoud palisap JO wajsAs 131 We Be gt
29. V hard Selectivity 6 dB 10 kHz min 40 dB 200 kHz max Input impedance 50 External lamp drive 125 mA max each output Other outputs Middle MKR sense Special functions SmartMute marker audio muting 1 3 3 Power Requirements Characteristic Specification Power Input Voltage 14 or 28 Vdc See the Environmental Qualification Form for details on surge ratings and minimum maximum operating voltages Power Consumption 0 8 14 V typical 15A 14V 0 4 A 28 V maximum typical 1 0 A 28 V maximum GMA 350 350H Installation Manual Page 1 5 190 01134 11 Revision A 1 4 Certification The conditions and tests required for TSO approval of this article are minimum performance standards It is the responsibility of those installing this article either on or within a specific type or class of aircraft to determine that the aircraft installation conditions are within the TSO standards TSO articles must have separate approval for installation in an aircraft The article may be installed only if performed under 14 CFR part 43 or the applicable airworthiness requirements 1 4 1 TSO Compliance Function Airborne Radio Marker Receiving Equipment TSO ETSO TSO C35d Category Aircraft Audio Systems and Equipment TSO C139 1 4 2 TSO Deviations TSO TSO C35d Class Ib Applicable LRU Software Part Numbers 006 B0772 0 _ 006 B0773 0
30. _ Deviation Applicable LRU Boot Block Part Numbers All 006 0772 006 0772 006 0773 006 0773 1 was granted deviation from TSO C35d to use FAR S21 607 d instead of FAR S37 7 as the general rules governing holders of the TSO authorizations 2 Garmin was granted a deviation from TSO C35d to use RTCA DO 160E instead of RTCA DO 138 as the standard for Environmental Conditions and Test Procedures for Airborne Equipment 1 Garmin was granted a deviation from TSO C139 paragraph 7a 2 Garmin was granted a deviation from TSO C139 paragraph 7 b 1 5 Reference Documents The following publications are sources of additional information for installing the GMA 350 350H Before installing the unit the technician should read all referenced materials along with this manual Part Number 190 01134 14 Document GMA 350H Pilot s Guide 190 01134 12 GMA 350 Pilot s Guide 190 01134 13 GMA 350 Maintenance Manual 190 01349 00 GMA 350 350H Configuration Tool User s Guide Page 1 6 Revision A GMA 350 350H Installation Manual 190 01134 11 1 6 Limited Warranty All Garmin avionics products are warranted to be free from defects in materials or workmanship for two years from the date of purchase for new Remote Mount and Panel Mount products one year from the date of purchase for new portable products and any p
31. age B 15 Page B 16 blank 190 01134 11 Rev B
32. chased in the United States or Canada must be returned to the Garmin service center in the United Kingdom the United States Canada or Taiwan for service Garmin International Inc Garmin Europe Ltd 1200 E 151st Street Liberty House Olathe KS 66062 U S A Bulls Copse Road Phone 800 800 1020 Hounsdown Business Park FAX 913 397 0836 Southampton S040 9RB UK Telephone 44 0 870 8501241 GMA 350 350H Installation Manual Page 1 7 190 01134 11 Revision A This page intentionally left blank Page 1 8 GMA 350 350H Installation Manual Revision 190 01134 11 2 INSTALLATION OVERVIEW 2 1 Introduction This section provides hardware equipment information for installing the GMA 350 350H Audio Panel related hardware and suggestions relating to the marker beacon antenna Installation of the GMA 350 350H should follow the aircraft or STC requirements Cabling is fabricated by the installing agency to fit each particular aircraft 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 comply with FAA regulations 2 2 Installation Materials The GMA 350 350H is available as single unit under the following part number Catalog Part Number GMA 350 Unit Only 011 02385 00 010 00871 00 GMA 350 Standard 011 02385 00 010 00871 01 GMA 350H Unit Only 011 02385 10 010 00871 10 GMA 350H Standard 011 02385 10 010 00
33. d alert message 3 8 4 Verify Speaker Output if installed 1 Select the speaker output and verify any one transceiver or receiver is heard clearly 2 Verify that any one unswitched alert source is heard clearly in the speaker depending on configuration these may be heard in the speaker regardless of speaker selection Initiate PA Passenger Address mode and verify that from both the pilot and copilot position the crew position that is pressing PTT has their mic delivered to the speaker clearly If loud squeal is heard while testing PA it is because there is too much acoustic feedback between the speaker and the mic If they cannot be placed further apart lower volume configuration should be used In some installations there is insufficient distance between the speaker and crew seat positions for to speaker to reliably operate In these conditions the PA to speaker volume can be set very low and PA audio will still be delivered to the headsets GMA 350 350H Installation Manual Page 3 5 190 01134 11 Revision B 3 8 5 Verify ICS Intercom System Operation 1 2 Place the audio panel into all ICS mode refer to the applicable pilot s guide so that all ICS positions hear all others Deselect or turn off other audio sources transceivers receivers alerts Some configurations may mute passenger intercom audio to crew when aircraft audio is present From the pilot headset position v
34. dustry organization such as the Aircraft Electronics Association and request their assistance Ne 2 8 Electrical Noise Because the audio panel is a point in the aircraft where signals from many pieces of equipment are brought together take care to minimize effects from coupled interference and ground loops Coupled interference can sneak into audio system interconnecting cables when they are routed near large AC electric fields AC voltage sources and pulse equipment strobes spark plugs magnetos EL displays CRTs etc Interference can also couple into audio system interconnecting cables by magnetic induction when they are routed near large AC current carrying conductors or switched DC equipment heaters solenoids fans autopilot servos etc Ground loops are created when there is more than one path in which return currents flow or when signal returns share the same path as large currents from other equipment These large currents create differences in ground potential between the various equipment operating in the aircraft These differences in potential can produce an additive effect on audio panel input signals The audio panel may see the desired input signal plus an unwanted component injected by ground differentials a common cause of alternator related noise This is the main reason why all audio jacks should be isolated from ground Terminating audio shields just at one end eliminates another potential ground loop injectio
35. er to the unit by pulling the audio breaker 2 Connect a mono headset to the pilot s headset output Jack and pilot s mic jack Use of a true mono headset is required for this test to insure proper wiring even if a stereo jack is provided in the installation Wiring left channel tip contact and right channel ring contact backwards will cause failsafe mode not to function with mono headsets Use of true mono headset is required for this test not stereo headset with mono stereo switch because headset manufactures differ on how they accomplish this switching This will guarantee the condition of the right channel ring terminal being shorted to the return sleeve terminal by the mono headset s plug This short occurs because of the physical design of the headset plug contacts and is an inevitable consequence of plugging mono headset into stereo Jack During power on operation this short will not damage the audio panel 3 Verify that the COM1 transceiver can be heard in the pilot s headset Verify that COM1 can key and transmit the pilot s mic audio by verifying received sidetone or checking reception of the transmission with another radio tuned to receive this transmission verify Pilot PTT and mic operation is delivered to this transceiver 5 Apply unit power by restoring the audio breaker to the normal operating position Verify Installed Transceivers COMs are able to Transmit and Receive 1 Connect a headset t
36. erify the pilot copilot and all passenger mic inputs can be heard in the pilot s headset when speaking into the mic input under test adjust pilot ICS volume if necessary Speak into the pilot s mic and verify that pilot mic audio is heard in the copilot headset adjust copilot ICS volume if necessary and in each passenger headset adjust passenger ICS volume if necessary 3 8 6 Verify Telephone and Music Operation if installed 1 2 Deselect or turn off other audio sources transceivers receivers alerts Some configurations may mute telephone and or music audio when aircraft audio is present From the pilot s headset position initiate a phone call and verify that two way communication over the telephone can be heard when selected refer to the applicable pilot s guide for information on how telephone and music audio can be distributed and insure that it is configured to be heard by the pilot Verify that all installed music sources can be heard when selected refer to the applicable pilot s guide for information on how telephone and music audio can be distributed and insure that it is configured to be heard by the pilot 3 8 7 Marker Beacon Operation if installed 1 With a marker signal generator transmitter test set generate Marker Tones 2 From the pilot headset position verify that marker audio can be heard when selected 3 If the system includes integrated lamp annunciation and or if external
37. me of publication of this manual see date on front cover and is subject to change without notice Authorized Garmin Sales and Service Centers are encouraged to access the most up to date bulletin and advisory information on the Garmin Dealer Resource web site at www garmin com using their Garmin provided user name and password SERVICE SERVICE BULLETIN BULLETIN PURPOSE OF MODIFICATION NUMBER Page vi GMA 350 350H Installation Manual Revision B 190 01134 11 1 GENERAL DESCRIPTION 1 1 Introduction This manual presents mechanical and electrical installation requirements for installing the Garmin GMA 350 350H audio panel The GMA 350 350H can be incorporated into variety of airframes under appropriate TC or STC Each airframe installation may vary Use only approved type or supplemental type data for specific installation instructions in a particular aircraft 1 2 Equipment Description The Garmin GMA 350 350H is a horizontally oriented panel mounted audio controller and marker beacon system that collects processes and distributes audio signals between avionics crew and passengers The GMA 350 350H is a high fidelity digital audio product with improved circuitry that make audio signals less prone to noise e g whining sound of an alternator or blip sound from a radar At the GMA s core is a digital signal processor DSP that cleans up audio using advanced filtering techniques and provides VOX control for mic
38. n point Single point grounding cannot be overstressed for the various avionics producing and processing audio signals Single point in this context means that the various pieces of equipment share a single common ground connection back to the airframe Good aircraft electrical charging system ground bonding is also important The wiring diagrams and accompanying notes in this manual should be followed closely to minimize noise effects Page 2 6 GMA 350 350H Installation Manual Rev B 190 01134 11 3 INSTALLATION PROCEDURE 3 1 Unpacking Unit Carefully unpack the equipment and make visual inspection of the unit for evidence of damage incurred during shipment If the unit is damaged notify the carrier and file a claim To justify a claim save the original shipping container and all packing materials Do not return the unit to Garmin until the carrier has authorized the claim Retain the original shipping containers for storage If the original containers are not available a separate cardboard container should be prepared that is large enough to accommodate sufficient packing material to prevent movement 3 2 Antenna Installation Install the antenna according to the antenna manufacturer s instructions 3 3 Antenna Cable Connectors The antenna cable requires a BNC plug connector Follow BNC connector manufacturer instructions for assembly of the BNC connector 3 4 Electrical Connections All electrical connections to
39. ns Locate it as far away as possible from transmitter antennas 2 3 1 2 Marker Beacon Antenna Mounting Install the antenna according to the antenna manufacturer s instructions If the antenna is being installed on composite aircraft ground planes must sometimes be added Conductive wire mesh radials or thin aluminum sheets embedded in the composite material provide the proper ground plane allowing the antenna pattern gain to be maximized for optimum performance 2 3 1 3 Marker Beacon Antenna Cable Use coaxial cable meeting the applicable aviation regulation for the marker beacon antenna Any cable meeting specifications is acceptable for the installation When routing antenna cables observe the following precautions e All cable routing should be kept as short and as direct as possible e Avoid sharp bends e Avoid routing cables near power sources e g 400 Hz generators trim motors etc or near power for fluorescent lighting e Allow 12 inch minimum separation between any other cables including antenna cables e g ADF COM NAV GS MARKER Page 2 2 GMA 350 350H Installation Manual Rev B 190 01134 11 2 3 1 4 Beacon Antenna Cable Installation This section provides guidance for terminating the coaxial cable into the D Sub connector See the system interconnect section for pin assignments Use coaxial cable meeting the applicable aviation regulation for the marker beacon antenna Route the cable to
40. o the pilot s headset output and mic input jack 2 Verify that each installed transceiver COM can be heard when selected Depending on settings the mic selected COM may mute audio from other COMs Page 3 4 GMA 350 350H Installation Manual Revision B 190 01134 11 3 Verify that each installed transceiver keys for transmission and transmits clear audio from the pilot s mic when selected for transmission and the Pilot PTT key is pressed Because the audio panel can be configured to simulate received sidetone internally verifying transmission with separate radio not in the system is recommended Depending on configuration and sometimes COM system wiring other transceivers may be muted during transmit Also the audio panel may mute the speaker during PTT Move the headset to the copilot s headset jacks and verify that any one of the installed transceivers testing each is not necessary receives and transmits copilot mic properly as above 3 8 3 Verify Audio from Installed Receiver and Alert Sources 1 Connect a headset to the pilot s headset output and mic input jack depending on configuration and ICS mode copilot or passenger positions may not hear all of these sources Verify each installed receiver NAV ADF DME can be heard when selected use test signal generators transmitters when necessary Verify each installed unswitched alert source can be heard when the source is instructed to play simulate
41. rear plate into the GMA 350 350H unit rack Insert the GMA 350 350H into the rack noting proper orientation as shown on the installation drawing in Appendix A 6 Lock the GMA 350 350H in place using the appropriate size hex wrench Post Installation Configuration The GMA 350 350H Configuration Tool 006 A0245 00 and GMA 350 350H Configuration Tool User s Guide 190 01349 00 are available for download from the Garmin Dealers web site With this configuration tool and a GMA 350 USB cable 320 00672 00 configuration settings can be made to the GMA 350 350H without removing the unit from the panel allowing adjustments to be tested guickly Examples of configuration settings and adjustments for a complete list of options refer to the GMA 350 350H Configuration Tool User s Guide Backlight bus voltage Marker sensitivity and max volume Audio input gains max volumes and muting thresholds Music muting options not adjustable by user interface Enable Disable 3D audio default is enabled Pilot sits in left or right seat for proper 3D location of ICS audio Programmable input configuration keyed ICS and Voice Command keys GMA 350 350H Installation Manual Page 3 3 190 01134 11 Revision B 3 8 3 8 1 3 8 2 Post Installation Checkout The GMA 350 350H does not provide valid outputs until the aircraft post installation configuration procedures are completed Verify Failsafe Operation with a Mono Headset 1 Remove pow
42. tended barrels inside the backshell If using AWG 16 or 18 barrel contacts ensure that no two contacts mounted directly adjacent to each other This minimizes the risk of contacts touching and shorting to adjacent pins and to ground Ensure that routing of the wiring does not come in contact with sources of heat RF or EMI interference Check that there is ample space for the cabling and mating connectors Avoid sharp bends in cabling and routing near aircraft control cables 2 5 Cooling Air The GMA 350 350H does not have provisions for attaching cooling air and does not generate an excessive amount of heat during typical operations however the thermal characteristics of the installation should always be assessed An undesirable thermal condition could be created due to the unit s own internal power dissipation combined with restricted ventilation or due to heat generated by adjacent equipment Limiting thermal build up by means of fan or natural convection is always a good practice and recommended to increase the product life Page 2 4 GMA 350 350H Installation Manual Rev 190 01134 11 2 6 Mounting Requirements The GMA 350 350H mounting surface must be capable of providing structural support and electrical bond to the aircraft to minimize radiated EMI and provide protection from High Intensity Radiation Fields HIRF The GMA 350 350H is mounted using its own unit rack Figure 2 2 Refer to Appendix A for installation
43. the D Sub as described in Section 2 3 1 3 When terminating the coaxial cable into the D Sub observe the following guidance refer to Figure 2 1 e Keep the distance from the end of the exposed shield to D Sub as short as possible e Ensure the distance from the beginning of the exposed shield to D Sub is no more than 1 5 inches long e Terminate the center conductor by directly connecting it to the D sub through a crimp pin without a pigtail Figure 2 1 below represents a suggested method for terminating the marker beacon coaxial cable using M17 128 RG400 terminated into a high density D Sub connector Refer to Table 2 1 for Crimp Tool Pin and Crimp Tool Insert part numbers SOLDERED PIGTAIL TO SHIELD GPN 336 00021 00 USE ON SHIELD GPN 336 00044 00 USE ON CENTER CONDUCTOR CENTER CONDUCTOR Figure 2 1 GMA Marker Beacon Coaxial Cable D Sub Termination Table 2 1 Pin and Crimp Tool Part Numbers CRIMP TOOL PIN CRIMP TOOL INSERT Garmin Part Number DANIELS MANUFACTURING CORP 336 00021 00 DMC M22520 2 01 GAGE Garmin Part Number AFM8 CRIMPING TOOL 336 00044 00 GMA 350 350H Installation Manual Page 2 3 190 01134 11 Rev B 2 4 Cabling amp Wiring Refer to the interconnect examples in Appendix B for wire gauge guidance In some cases a larger gauge wire such as AWG 16 18 20 may be needed for power connections Special thin wall heat shrink tubing is also provided to insulate the ex
44. the GMA 350 350H including the marker beacon antenna and shield ground are made through two 44 pin D subminiature connectors Tables in Section 4 define the electrical characteristics of all input and output signals Required connector and associated hardware are supplied in the connector kit P N 011 02302 00 See figures in Appendix B for interconnect wiring diagrams Check wiring connections for errors before inserting the GMA 350 350H into the rack Incorrect wiring could cause internal component damage Table 3 1 Pin Contact Part Numbers 44 pin D Subminiature Connectors P3501 3502 16 AWG 18 20 AWG 22 28 AWG Power Only Power Only Garmin P N 336 00044 01 336 00044 00 336 00021 00 Manufacturer Military P N N A M39029 58 360 AMP N A 204370 2 Positronic N A MC8522D ITT Cannon N A 030 2042 000 GMA 350 350H Installation Manual Page 3 1 190 01134 11 Revision B Table 3 2 Recommended Crimp Tools 18 20 AWG 22 28 AWG Hand Crimping Tool Positioner Insertion Positioner Insertion Extraction Tool Extraction Note 2 Tool Military P N M22520 2 01 M81969 1 04 M22520 2 09 M81969 1 04 9502 11 M81969 1 04 601966 1 M81969 1 04 M81969 1 04 1 Non Garmin part numbers shown are not maintained by Garmin and consequently are subject to change without notice 2 Extracting the 16 18 and 20 contact requires that the expanded wire barrel be cut off from the contact It
45. urchased newly overhauled products six months for newly overhauled products exchanged through a Garmin Authorized Service Center and 90 days for factory repaired or newly overhauled products exchanged at Garmin in lieu of repair Within the applicable period Garmin will at its sole option repair or replace any components that fail in normal use Such repairs or replacement will be made at no charge to the customer for parts or labor provided that the customer shall be responsible for any transportation cost This warranty does not apply to i cosmetic damage such as scratches nicks and dents ii consumable parts such as batteries unless product damage has occurred due to a defect in materials or workmanship iii damage caused by accident abuse misuse water flood fire or other acts of nature or external causes 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 THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES WHETHER EXPRESS IMPLIED OR STATUTORY INCLUDING ANY LIABILITY ARISING UNDER ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE STATUTORY OR OTHERWIS
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