Garmin G3X Installation Manual page 35

2.2.1.2 Other LRU Power Requirements
LRU
GAD 27
GAD 29
GDU 37X**
GDU 45X**
GDU 46X**
GDL 39/39R
GEA 24
GI 260
GMC 305
GMC 307
GMU 22
(from GSU 25/GSU 73)
GPS 20A
GSA 28
GSU 25
GSU 73*
*Garmin recommends using Mod 1 level GSU 73 in aircraft that use a +28 V supply voltage and intend to monitor
current on high voltage devices such as the aircraft alternator.
**The specified current draw is measured with the display backlight set to 100%
190-01115-01
Rev. AA
Table 2-2 G3X LRU Power Requirements
Supply Voltage
14 Vdc 0.2 Amp (varies with connected devices)
28 Vdc Not supported, do not use in 28V installations
14 Vdc 0.2 Amp
28 Vdc 0.1 Amp
14 Vdc 1.10 Amp
28 Vdc 0.540 Amp
14 Vdc 1.25 Amp
28 Vdc 0.7 Amp
14 Vdc 2.0 Amp
28 Vdc 1.0 Amp
14 Vdc 0.25 Amp
28 Vdc 0.125 Amp
14 Vdc 0.43 Amp max (typical external sensor loading)
28 Vdc 0.21 Amp max (typical external sensor loading)
14 Vdc 0.4 Amp
28 Vdc 0.2 Amp
14 Vdc 0.050 A (50 mA)
28 Vdc 0.028 A (28 mA)
14 Vdc 0.120 A (120 mA)
28 Vdc 0.067 A (67 mA)
12 Vdc
Inc. in GSU 25/GSU 73 Current Draw
14 Vdc 0.2 Amp
28 Vdc 0.1 Amp
0.36 Amp (typical)
14 Vdc 1.80 Amp (max)
2.80 Amp (max with 1 Amp trim motor at full load)
0.20 Amp (typical)
28 Vdc 0.90 Amp (max)
1.40 Amp (max with 1 Amp trim motor at full load)
14 Vdc 0.2 Amp (includes GMU 22 load)
28 Vdc 0.11 Amp (includes GMU 22 load)
14 Vdc 1.75 Amp (max)
28 Vdc 0.80 Amp (max)
G3X/G3X Touch Installation Manual - Installation Preparation
Current Draw
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