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Page 1-2 GMA 240 Installation Manual
Rev. A 190-00917-01
1.2.1 Features Summary
• User-friendly, intuitive front panel layout
• LEDs indicate selected function
• Four position intercom: pilot, copilot, two passengers
• Two stereo headset amplifiers: one for pilot, one for copilot/passengers
• Two differential stereo music source inputs
• Front panel music volume control, source selection, and master music on/off switch
• Front panel controls for music muting by intercom and selected radios
• Two selectable intercom operational modes
• Selectable aural pushbutton annunciation (beep)
• Independent pilot, copilot/passenger intercom volume and squelch controls
• Individual VOX circuits for each of four (4) mic inputs
• Automatic selection of COM audio 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 indication
• Power-off fail-safe to connect Pilot PTT, mic, and Headset to COM 1 if unit is turned off
• Power-off fail-safe warning audio input
• Full duplex Telephone interface
• Front Panel Mini-Jack (MP3 player, cellular phone, etc.)
1.3 Technical Specifications
1.3.1 Physical Characteristics
Characteristic Specification
Bezel Height 1.30 inches (33 mm)
Bezel Width 6.29 inches (159.77 mm)
Rack Height (Dimple to Dimple) 1.33 inches (34 mm)
Rack Width 6.30 inches (160.02 mm)
Depth Behind Panel with Connectors
(measured from face of aircraft panel to rear
of connector backshells)
7.12 inches (181 mm)
GMA 240 Weight (Unit Only) 15.5 oz (440 g)
GMA 240 Weight (Installed with rack and
connectors)
24 oz (680 g)