Specifications - Garmin GMA 340 Installation Manual

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Independent pilot, copilot, and passenger volume controls
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Individual VOX circuits for each of six (6) mic inputs
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Automatic selection of radio audio source when corresponding mic is selected
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MASQ
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Split COM transceiver function. Copilot may transmit and receive on COM2 while pilot
transmits and receives on COM1
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COM swap function
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TX indication
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SmartMute
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Speaker output for radios or PA function
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Power-off fail-safe to connect Pilot PTT, mic, and Headset to COM 1 if unit is turned off
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Power loss fail-safe warning audio
1.3

SPECIFICATIONS

SPECIFICATION
TSO Compliance
Temperature Range
Weight
Physical Dimensions:
Depth Behind Panel with
Connectors (measured from
face of aircraft panel to rear
of connector backshells)
Power Requirements
Altitude
Audio Panel
Page 1-2
Rev. L
TM
Processing
TM
marker audio muting
CHARACTERISTIC
TSO-C50c, C35d, JTSO-C50c, and JTSO-2C35d using DO-160C,
DO-170, and DO-143
-20°C to +55°C
(Unit Only) 1.2 lbs. (0.6 kg)
(Installed with rack and connectors) 1.7 lbs. (0.8 kg)
Bezel Height: 1.30 inches (33 mm)
Bezel Width: 6.29 inches (160 mm)
Rack Height (Dimple to Dimple): 1.33 inches (34 mm)
Rack Width: 6.30 inches (160 mm)
7.12 inches (181 mm)
Supply Voltage: 11.0 to 33.0 VDC; Operating Current: 2.2 A (normal
operation, 13.8 V, speaker on)
50,000 Feet
Transceiver inputs: 3
Receiver inputs: 5 (6 in Dual ADF version)
Unswitched inputs: 2
Input impedance: 500
Input isolation: 60 dB minimum
Special functions: Fail-safe operation
(800 DME input in Dual ADF)
TM
MASQ processing
GMA 340 Installation Manual
190-00149-01