Garmin GMA 240, Руководство по установке

Страница: 30 / 42

GMA 240 Installation Manual 190-00917-01
Page 4-6 Rev. D
4.5 Audio Inputs/Outputs and Mic Keys
4.5.1 Mic Audio Inputs and Mic Keys
4.5.2 Intercom Key Inputs (if configured)
These inputs only perform the described ICS KEY function if the audio panel has been configured for
KEYED ICS by configuration jumper settings (
Section 2.3.1 ). For this configuration, intercom squelch
levels should be set fully CCW (live MIC) because the MIC signal must also break the VOX threshold to
be heard.
Table 4-7 Mic Audio Inputs and Mic Keys
Pin Connector Pin Name Description I/O
34 P2401 PILOT MIC KEY* IN
Enables respective 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 COPILOT MIC AUDIO IN HI
Copilot Mic audio input and ground
reference
IN
34 P2402 COPILOT MIC IN LO --
35 P2402 PASS 1 MIC AUDIO IN HI
Passenger 1 Mic audio and ground
reference
IN
36 P2402 PASS 1 MIC AUDIO IN LO --
37 P2402 PASS 2 MIC AUDIO IN HI
Passenger 2 Mic audio and ground
reference
IN
38 P2402 PASS 2 MIC AUDIO IN LO --
*Denotes Active Low (Ground to activate)
Table 4-8 Intercom Key Inputs
Pin Connector Pin Name Description
17 P2402 PILOT ICS KEY* IN
Enables respective mic audio to be heard in the
intercom
36 P2401 COPILOT ICS KEY* IN
37 P2401 PASSENGER ICS KEY* IN
*Denotes Active Low (Ground to activate)