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190-00917-01

June, 2012

Revision D

GMA 240

Installation Manual

PILO T

C OPILO T

MUTE

MON

SQ

OFF/

VOL

SQ

VOL

PULL

MUSIC

VOL

TE L

GMA 240

PILOT

IS O

MUTE MUS IC

MUS IC

IC S

RADIO

NAV1

NAV2

AUX1

AUX2

C OM1

MIC

C OM1

C OM2

C OM2

MIC

TEL

1

1-2

1

2

1
2
3
...
»

Содержание GMA 240

Страница 1: ...2012 Revision D GMA 240 Installation Manual PILOT COPILOT MUTE MON SQ OFF VOL SQ VOL PULL MUSIC VOL TE L GMA 240 PILOT IS O MUTE MUS IC MUS IC IC S RADIO NAV1 NAV2 AUX1 AUX2 COM1 MIC COM1 COM2 COM2 M...

Страница 2: ...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 he...

Страница 3: ...onents contain chemicals known to the State of California to cause cancer birth defects or reproductive harm This Notice is being provided in accordance with California s Proposition 65 If you have an...

Страница 4: ...d the purpose of the modification The table is current at the time of publication of this manual see date on front cover and is subject to change without notice Authorized Garmin Sales and Service Cen...

Страница 5: ...ILITY OR FITNESS FOR A PARTICULAR PURPOSE STATUTORY OR OTHERWISE THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS WHICH MAY VARY FROM STATE TO STATE IN NO EVENT SHALL GARMIN BE LIABLE FOR ANY INCIDENTAL...

Страница 6: ...GMA 240 Installation Manual 190 00917 01 Page iv Rev D This page intentionally left blank...

Страница 7: ...5 GMA 240 Mounting 2 6 Section 3 INSTALLATION PROCEDURE 3 1 3 1 Unpacking Unit 3 1 3 2 Electrical Connections 3 1 3 3 Audio Shield Termination 3 2 3 4 GMA 240 Installation 3 2 3 5 Post Installation C...

Страница 8: ...J2401 J2402 Viewed from Back of Unit 4 1 Figure 4 3 2 5 mm Plug Used with P2403 4 4 Figure 4 4 Audio Jack Wiring 4 10 Appendix A Outline and Installation Drawings A 1 Figure A 1 GMA 240 Outline Drawin...

Страница 9: ...ecommended Crimp Tools 3 1 Section 4 SYSTEM INTERCONNECTS 4 1 Table 4 1 J2401 Pin Assignments 4 1 Table 4 2 J2402 Pin Assignments 4 3 Table 4 3 P2403 Connector 4 4 Table 4 4 Aircraft Power 4 4 Table 4...

Страница 10: ...GMA 240 Installation Manual 190 00917 01 Page viii Rev D This page intentionally left blank...

Страница 11: ...Large single button activation of the COM microphone and audio for two COM transceivers simplifies cockpit workload Photocell dimming circuitry automatically adjusts the brightness of the annunciators...

Страница 12: ...udio source when corresponding mic is selected Memory of explicitly selected COM audio source s when changing COM mic selection MASQ Processing with configurable mute threshold COM swap function PTT i...

Страница 13: ...ton push aural annunciation Intercom Functions Positions 4 pilot copilot 2 passengers Volume controls 3 pilot copilot passengers music VOX level controls 2 pilot copilot passengers VOX circuits 4 one...

Страница 14: ...th Special Functions Front panel selection and volume control Front panel control for muting by radios and ICS Muting by alerts configurable Full power output refers to 300 mW into 50 three 150 headse...

Страница 15: ...etailed in Appendix B Hardware 6 32 100 flat head screw 6 ea and 6 32 self locking nut 6 ea Hardware required to mount the installation rack is not provided Stereo headphone jacks up to 4 microphone j...

Страница 16: ...audio Default operation is recommended R0304 COM1 Internal Sidetone Empty If a jumper is supplied in these positions internal sidetone will be heard during PTT to simulate received sidetone from a rad...

Страница 17: ...vels for volume inputs and for the mute threshold for radio inputs R0314 Only Primary COM mutes MUSIC Empty If a jumper is supplied in this position the RADIO button will mute music only when the Prim...

Страница 18: ...hold This increases background noise during otherwise quiet operation because noise from these inputs is not squelched This option is most useful as a troubleshooting tool CREW ISO This input configur...

Страница 19: ...created when there is more than one path in which return currents can flow or when signal returns share the same path as large currents from other equipment These large currents create differences in...

Страница 20: ...electrical bond to the aircraft to minimize radiated EMI and provide protection from High Intensity Radiation Fields HIRF The GMA 240 is mounted using a GMA 340 unit rack Figure 2 3 shows the GMA 340...

Страница 21: ...44 pin D subminiature 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 connect...

Страница 22: ...onfigurations available Suitable mounting brackets may be fabricated from sheet metal or angle stock To ensure a sturdy mount rear support for the unit should be provided 2 Slide the unit into the rac...

Страница 23: ...ons are loud and clear and PTT operation is correct 3 5 4 Intercom System ICS Check NOTE Stereo headsets are recommended if stereo jacks are installed Alternatively the installation should employ ster...

Страница 24: ...rd when MUSIC 2 is selected as the music source and MUSIC LED is on 5 Connect a stereo audio source to the front panel jack Verify that stereo audio is heard when MUSIC 1 is selected as the music sour...

Страница 25: ...as shown in Figure 4 2 J2401 and J2402 pin assignments are given in Table 4 1 Table 4 2 and Appendix B Following the pin assignment tables Table 4 1 Table 4 2 additional tables group pin connections b...

Страница 26: ...AUX1 AUDIO IN LO 23 RESERVED 24 RESERVED 25 RESERVED 26 RESERVED 27 RESERVED 28 RESERVED 29 CREW ISO IN IN 30 COM 2 MIC KEY OUT OUT 31 ALERT 1 AUDIO IN HI IN 32 ALERT 1 AUDIO IN LO 33 PILOT MIC AUDIO...

Страница 27: ...RESERVED 13 PILOT ISO MUSIC IN IN 14 PILOT ISO MUSIC RETURN 15 ALERT 3 AUDIO IN HI IN 16 PILOT HEADSET AUDIO OUT LEFT OUT 17 RESERVED 18 RESERVED 19 BUTTON PRESS TONE ENABLE IN IN 20 COM SWAP IN IN 2...

Страница 28: ...8 PASS 2 MIC AUDIO IN LO 39 RESERVED 40 RESERVED 41 RESERVED 42 RESERVED 43 RESERVED 44 RESERVED Denotes Active Low Inputs ground to activate Outputs grounded when active Table 4 3 P2403 Connector Pin...

Страница 29: ...8V HI IN Table 4 6 External Configuration Pins Pin Connector Pin Name Description 16 P2401 MASQ INHIBIT IN Ground to disable Master Avionics Squelch circuitry This will cause alerts and selected radio...

Страница 30: ...tive MIC audio into the selected transceiver unit IN 33 P2402 COPILOT MIC KEY IN IN 33 P2401 PILOT MIC AUDIO IN HI Pilot Mic audio input and ground reference IN 35 P2401 PILOT MIC IN LO 32 P2402 COPIL...

Страница 31: ...Sinks current to ground when active Table 4 10 Alert Audio I O Pin Connector Pin Name Description I O 31 P2401 ALERT 1 AUDIO IN HI Alert 1 Audio Input IN 32 P2401 ALERT 1 AUDIO IN LO Ground Reference...

Страница 32: ...ector Pin Name Description I O 23 P2402 MUSIC 1 IN LEFT Music 1 Input IN 24 P2402 MUSIC 1 IN RIGHT IN 25 P2402 MUSIC 1 IN LO Ground Reference for Music 1 26 P2402 MUSIC 2 IN LEFT Music 2 Input IN 27 P...

Страница 33: ...ions using only mono headsets may use a stereo audio jack and leave the ring contact unconnected or install a switch as shown in Figure 4 4 Also note that many stereo headsets have a mono stereo switc...

Страница 34: ...v D Figure 4 4 Audio Jack Wiring 4 5 10 COM Swap Table 4 16 COM Swap Pin Connector Pin Name Description I O 20 P2402 COM SWAP IN Ground Through a Momentary PB Switch to Swap Active COM COM 1 or COM 2...

Страница 35: ...190 00917 01 GMA 240 Installation Manual Revision D Page A 1 APPENDIX A Outline and Installation Drawings Figure A 1 GMA 240 Outline Drawing J2402 J2401...

Страница 36: ...190 00917 01 GMA 240 Installation Manual Revision D Page A 2 APPENDIX A Outline and Installation Drawings Figure A 2 GMA 240 Connector Rack Assembly Drawing J2401 J2402...

Страница 37: ...190 00917 01 GMA 240 Installation Manual Revision D Page A 3 APPENDIX A Outline and Installation Drawings Figure A 3 GMA 240 Recommended Panel Cutout Dimensions...

Страница 38: ...190 00917 01 GMA 240 Installation Manual Revision D Page B 1 APPENDIX B Interconnect Drawings Figure B 1 GMA 240 Interconnect Drawing page 1 of 3...

Страница 39: ...HT CHANNEL OUTPUT TO GROUND THIS CAUSES EXCESS CURRENT TO BE DRAWN AND MAY DAMAGE THE GMA 240 STEREO HEADSETS ARE RECOMMENDED IF STEREO JACKS ARE INSTALLED INSTALLATIONS USING ONLY MONO HEADSETS MAY U...

Страница 40: ...ion Manual Revision D Page B 3 APPENDIX B Interconnect Drawings Figure B 1 GMA 240 Interconnect Drawing page 3 of 3 10 IF PINS 5 6 7 ARE NOT CONNECTED IN THE 14V OR 28V CONFIGURATION BACKLIGHTING WILL...

Страница 41: ...PILOT HEADSET AUDIO OUT LEFT COPILOT MIC AUDIO IN HI RESERVED PILOT HEADSET AUDIO OUT LO 1 0 4 2 J 0 4 2 A M G 2 0 4 2 J 0 4 2 A M G 1 2 3 4 6 5 8 7 10 9 15 13 14 12 11 16 17 18 19 20 21 22 23 24 25...

Страница 42: ...0 00917 01 GMA 240 Installation Manual Revision D Page C 1 APPENDIX C Configuration Jumpers Drawing Figure C 1 GMA 240 Internal ConfigurationJumper Layout Drawing Top of Main Board Bottom of Main Boar...

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