Garmin G3X User Manual

190-01115-01 G3X™/G3X Touch™ Avionics Installation Manual
Rev. AV Page F-9
F.5.3 Power I/O
F.5.3.1 Aircraft Power
The GSU 73 has four inputs for aircraft power bus inputs of 14/28 Vdc, and can operate using power from
one or both inputs (AIRCRAFT POWER 1 AND AIRCRAFT POWER 2). The pins are internally
connected using diodes to prevent current from flowing between the two power inputs. AIRCRAFT
POWER 2 is for connecting to an alternate power source, such as on aircraft with two electrical buses. The
two aircraft power inputs may optionally be used to monitor aircraft bus voltage (see Appendix H.4.19.3.2
for configuration).
69 OIL PRESS HI In
70 SHUNT 1 HI In
71 VOLTS 1 HI In
72 POS 5 / MISC TEMP HI In
73 CHT 5 HI In
74 TRANSDUCER POWER OUT LO (GROUND) --
75 +5 VDC TRANSDUCER POWER OUT Out
76 FUEL SENSOR PULL-UP 2 (FUEL 2) Out
77 FUEL SENSOR PULL-UP 1 (FUEL 1) Out
78 CONFIG MODULE GROUND --
Pin Connector Pin Name I/O
47 J731 AIRCRAFT POWER 1 IN
49 J731 AIRCRAFT POWER 2 IN
59 J731 POWER GROUND --
61 J731 POWER GROUND --
Pin Pin Name I/O
*Indicates Active Low

Garmin G3X Specifications

General

Display Type	LCD
Touchscreen	Yes
Power Input	10-32 VDC
Connectivity	Bluetooth, Wi-Fi (optional)
Interfaces	RS-232
GPS	Internal GPS/WAAS receiver
AHRS	Integrated AHRS
Air Data Computer	Integrated Air Data Computer
Autopilot Compatibility	Compatible with Garmin autopilots
Operating Temperature	-20°C to +55°C
Sunlight Readability	Sunlight readable display
Screen Size	10.6 inches