G300 Installation Manual – Installation Overview
Page 1-3
190-00921-01
Revision A
1.4
General G300 LRU Specifications
1.4.1
Garmin LRU Part Numbers
Table 1-1. G300 LRU Part Numbers
LRU
Assembly Part
Number
Unit Only Part
Number
GDU 370
011-01747-10
010-00667-10
GDU 375
011-01747-30
010-00667-30
GMU 44
011-00870-00
010-00296-00
GSU 73
011-01817-00
010-00691-00
1.4.2
Power Specifications
All LRUs are capable of operating at either 14 or 28 VDC. See the individual LRU specific
Environmental Forms (Table 1-4) for details on surge ratings and minimum/maximum operating voltages.
See Table 1-2 for current draw specifications.
Table 1-2. G300 LRU Power Requirements
LRU
Supply Voltage
Current Draw
GDU 37X
9-29 Vdc
1.07 Amp @ 14Vdc
0.54 Amp @ 28Vdc
GMU 44
12Vdc (from GSU 73)
Inc. in GSU Current Draw
GSU 73
9-29 Vdc
1.75 Amp @ 14Vdc (Max)
0.80 Amp @ 28Vdc (Max)
1.4.3
Physical Specifications
All width, height, and depth measurements are taken with unit rack (if applicable) and connectors.
Table 1-3. G300 LRU Physical Specifications
LRU Width Height
Depth
(GMU 44
Diameter,
including
flange*)
Unit Weight
Unit Weight
w/Nutplate
& Connector
Weight
GDU 370
6.04 inches
(153.4 mm)
7.83 inches
(198.8 mm)
3.41 inches
(86.7 mm)
1.6 lbs
(0.713 kg)
1.8 lbs
(0.803 kg)
GDU 375
6.04 inches
(153.4 mm)
7.83 inches
(198.8 mm)
3.41 inches
(86.7 mm)
1.7 lbs
(0.753 kg)
1.9 lbs
(0.843 kg)
GMU 44
N/A
2.10 inches
(5.33 cm)
*3.35 inches
(85.1 mm)
0.35 lbs.
(0.16 kg)
0.50 lbs.
(0.23 kg)
GSU 73
5.50 inches
(139.8 mm)
3.96 inches
(100.6 mm)
7.33 inches
(186.2 mm)
3.1 lbs
(1.41 kg)
3.5 lbs
(1.59 kg)
