GMA340 Spec Sheet

GMA 340 audio panel
GARMIN’s new GMA 340 audio panel meets the needs of aircraft owners and operators who require reliability and versatility in the essential audio switching function.
• User-friendly, intuitive front panel layout
• Six position intercom: pilot, copilot, four passengers
• Three stereo headset amplifiers: pilot, copilot, and passengers
• Two stereo music source inputs
• Three selectable intercom operational modes
• Independent pilot, copilot, and passenger volume controls
• Individual VOX circuits for each mic input (6)
• Automatic selection of radio audio source when corresponding mic is selected
• Split COM transceiver function. Copilot may transmit and receive on COM2 while
pilot transmits and receives on COM1
• COM swap function
• TX indication
• MKR beacon MUTE function with auto re-arm feature
• Speaker output for radios and PA function
• Power-off fail safe to connect Pilot PTT, mic, and Headset to COM1 if unit is turned off
Intercom
Specifications - General
TSO Compliance:
Weight:
Physical dimensions:
Power Requirements:
Temperature range:
Altitude:
TSO-C50c
TSO-C35d
using DO-160C, DO-170, and DO-143
TBD
Length 6.4”
Width:
6.29”
Height:
1.3”
Supply voltage:
11-33 Vdc
Operating current:
2.2A (13.8V, spkr on)
-20°C to +55°C (normal operation)
50,000 MSL unpressurized
Positions:
Volume controls:
VOX level controls:
VOX circuits:
Music inputs (stereo):
Intercom isolation modes:
6 (pilot, copilot, 4 passengers)
3 (pilot, copilot, passengers)
2 (pilot, copilot/passengers)
6 (one per mic input)
2 (one input mutable)
3 (pilot, crew, all)
Speaker Outputs
Outputs selectable:
Output power:
Frequency response:
Special functions:
One, pilot selectable
10 Watts into 4 or 8 ohms, any normal supply voltage.
350 to 6 kHz nom
PA Mode, pilot selectable
Marker Beacon Receiver
Frequency:
Sensitivity:
Selectivity:
Input impedance:
External lamp drive:
Other outputs:
Crystal controlled at 75 Mhz
LO 1000 uV hard
HI 200 uV hard
6 dB @ +/- 10kHz min.
40 dB @ +/- 200 kHz max.
50 ohms
125 mA max each output
Middle MKR sense
Audio Panel
Transceiver inputs:
Receiver inputs:
Unswitched inputs:
Input impedance:
Input isolation:
Headphone Outputs
Output amplifiers:
Power:
Frequency response:
3, stereo (pilot, copilot, passengers)
100 mW per stereo channel, each headset, into 150 ohms
with not more than 5% distortion, any normal supply voltage.
Music:
100 Hz to 15 kHz nom
A/C radio: 100 Hz to 6 kHz nom
ICS mic:
(Special cabin noise band de-emphasis)
Specifications are preliminary and subject to change without notice. ©2000 GARMIN Corporation
3
5
2
500 ohms
60 dB min
GARMIN International 1200 E. 151st Street, Olathe, KS USA 66062-3426
Telephone (913) 397-8200 or 1-800-800-1020 Fax (913) 397-8282
http://www.garmin.com
GARMIN (Europe) Ltd. Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, SO51 9AQ U.K.
Telephone 011-44-1794-519944 Fax 011-44-1794-519222
GARMIN (Asia) Corporation No. 68, Jangshu 2nd Rd., Shijr, Taipei County, Taiwan
886/2.2642.9199 FAX 886/2.2642.9099