Garmin G3X - Page 42

190-01115-01 G3X™/G3X Touch™ Avionics Installation Manual
Rev. AV Page 2-18
GMC 507
14 Vdc 0.20 A (200 mA)
28 Vdc 0.11 A (110 mA)
GMU 11 14/28 Vdc 0.1 A (100 mA)
GMU 22
12 Vdc
(from GSU 25/GSU 73)
Included in GSU 25/GSU 73 Current Draw
GPS 20A
14 Vdc 0.2 Amp
28 Vdc 0.1 Amp
GSA 28
14 Vdc
0.36 Amp (typical)
1.80 Amp (max)
2.80 Amp (max with 1 Amp trim motor at full load)
28 Vdc
0.20 Amp (typical)
0.90 Amp (max)
1.40 Amp (max with 1 Amp trim motor at full load)
GSU 25
14 Vdc 0.2 Amp (includes GMU 22 load)
28 Vdc 0.11 Amp (includes GMU 22 load)
GSU 73*
14 Vdc 1.75 Amp (max)
28 Vdc 0.80 Amp (max)
GTR 20
GTR 200**
14 Vdc
0.6 Amp, Typical when receiving
3.0 Amp, Typical when transmitting
7.50Amp, Maximum, 90% modulated into 3:1
VSWR and 11V power input voltage
28 Vdc
0.30 Amp, Typical when receiving
1.40 Amp, Typical when transmitting
3.75 Amp, Maximum, 90% modulated into 3:1
VSWR and 22 V power input voltage
Table 2-2 G3X LRU Power Requirements
LRU Supply Voltage Current Draw
*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%