190-01182-02 GTR 225/GNC 255 TSO Installation Manual
Rev. F Page D-11
NOTES
Figure D-5 GTR/GNC - Audio Panel Interconnect
Sheet 2 of 2
ALL WIRES 24 AWG OR LARGER UNLESS OTHERWISE SPECIFIED.
GROUND DESIGNATION: AIRFRAME GROUND
THE 500 AUDIO OUTPUTS ARE BALANCED OUTPUTS, AND THE LO OUTPUTS NEED TO BE CONNECTED.
IF THE AUDIO PANEL DOES NOT HAVE A LO INPUT, THE LO OUTPUT SHOULD BE CONNECTED TO A
GROUND LUG AT THE AUDIO PANEL.
REFER TO MANUFACTURER’S DOCUMENTATION FOR COMPLETE PINOUT AND INTERCONNECT
INFORMATION. PINOUTS OF OTHER UNITS SHOWN FOR REFERENCE ONLY.
SHIELDS FOR AUDIO CABLES SHOULD BE GROUNDED AT ONE END (WITH LEADS LESS THAN 3.0") AND
LEFT FLOATING AT THE OTHER END. IF SHIELDED AUDIO CABLE IS CARRIED THROUGH A DISCONNECT,
CARRY THE SHIELD GROUND THROUGH THE DISCONNECT ON A SEPARATE PIN.
CONNECTING TWO MICROPHONES TO MIC AUDIO HI/LO AT THE SAME TIME MAY RESULT IN WEAK OR
DISTORTED AUDIO. MIC ISOLATION RELAYS ARE RECOMMENDED SO THAT ONLY ONE MIC IS ACTIVE AT
A TIME.
SPLICE 500 COM AUDIO LO AND MIC AUDIO IN LO TOGETHER INTO THE SAME PIN ON AUDIO PANEL.
THE P2002 NAV CONNECTOR IS ONLY APPLICABLE TO THE GNC MODEL.
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