G300 Installation Manual – Installation Overview Page 1-3190-00921-01 Revision A1.4 General G300 LRU Specifications1.4.1 Garmin LRU Part NumbersTable 1-1. G300 LRU Part NumbersLRU Assembly PartNumberUnit Only PartNumberGDU 370 011-01747-10 010-00667-10GDU 375 011-01747-30 010-00667-30GMU 44 011-00870-00 010-00296-00GSU 73 011-01817-00 010-00691-001.4.2 Power SpecificationsAll LRUs are capable of operating at either 14 or 28 VDC. See the individual LRU specificEnvironmental 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 RequirementsLRU Supply Voltage Current DrawGDU 37X 9-29 Vdc 1.07 Amp @ 14Vdc0.54 Amp @ 28VdcGMU 44 12Vdc (from GSU 73) Inc. in GSU Current DrawGSU 73 9-29 Vdc 1.75 Amp @ 14Vdc (Max)0.80 Amp @ 28Vdc (Max)1.4.3 Physical SpecificationsAll width, height, and depth measurements are taken with unit rack (if applicable) and connectors.Table 1-3. G300 LRU Physical SpecificationsLRU Width HeightDepth(GMU 44Diameter,includingflange*)Unit WeightUnit Weightw/Nutplate& ConnectorWeightGDU 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)
