GIA 63 Installation Manual Page 4-1190-00303-05 Revision T4 SYSTEM INTERCONNECTS4.1 Pin Function List4.1.1 P601 (COM)View of J601 connector from back of unit1234567891011121314151617181920212223242526272829303132333435363738394041424344Pin Pin Name I/O1 RESERVED (UNSQUELCHED AUDIO TEST) --2 RESERVED --3 RESERVED --4 COM MIC KEY* In5 INTERCOM MIC IN HI In6 INTERCOM MIC IN LO (GROUND) --7 COM MIC AUDIO IN HI In8 COM MIC AUDIO IN LO (GROUND) --9 COM 500Ω AUDIO OUT HI Out10 COM 500Ω AUDIO OUT LO Out11 TRANSMIT INTERLOCK* In12 COM REMOTE TRANSFER* In13 COM DIGITAL AUDIO OUT Out14 ON-SIDE COM MIC DIGITAL AUDIO IN In15 SIGNAL GROUND --16 COM REMOTE POWER OFF In17 AIRCRAFT POWER 1 InSPARE --18 CROSS-SIDE COM MIC DIGITAL AUDIO IN (011-01105-20 AND011-01105-30 ONLY)In19 AIRCRAFT POWER 1 In20 SPARE --21 AIRCRAFT POWER 1 In22 SPARE --23 AIRCRAFT POWER 2 In24 SPARE --25 AIRCRAFT POWER 2 In26 SPARE --27 AIRCRAFT POWER 2 In28 RESERVED --29 RESERVED --30 POWER GROUND --31 POWER GROUND --32 RESERVED --33 RESERVED --34 RESERVED --* Indicates Active Low† Pin not currently supportedDRAFT Rev T 11/12/2010