Table 1-3 Gdu 37X Lru Power Requirements; Table 1-4 Gdu 37X Lru Physical Specifications - Garmin GDU 37X Installation Manual

1.4.2 Power Specifications
All LRUs are capable of operating at either 14 or 28 VDC. See Table 1-3 for current draw specifications.
LRU
GDU 37X
1.4.3 Physical Specifications
All width, height, and depth measurements are taken with unit rack (if applicable) and connectors.
LRU Width
6.04 inches
GDU 370
(153.4 mm)
6.04 inches
GDU 375
(153.4 mm)
1.4.4 Cooling Requirements
While no forced cooling air is required for the GDU 37X, it is highly recommended that the air behind the
panel be kept moving (by ventilation or a fan).
NOTE
Avoid installing the GDU 37X LRUs near heat sources. If this is not possible, ensure that
additional cooling is provided. Allow adequate space for installation of cables and
connectors. The installer will supply and fabricate all of the cables. All wiring should be
in accordance with FAA AC 43.13-1B and AC 43.13-2B.
190-01054-01
Rev. D

Table 1-3 GDU 37X LRU Power Requirements

Supply Voltage
10-29 Vdc

Table 1-4 GDU 37X LRU Physical Specifications

Height
7.83 inches
(198.8 mm)
7.83 inches
(198.8 mm)
Depth Unit Weight
3.41 inches 1.6 lbs
(86.7 mm) (0.713 kg)
3.41 inches 1.7 lbs
(86.7 mm) (0.753 kg)
GDU 37X Installation Manual
Current Draw
1.10 Amp @ 14Vdc
0.55 Amp @ 28Vdc
Unit Weight
w/Nutplate &
Connector
Weight
1.8 lbs
(0.803 kg)
1.9 lbs
(0.843 kg)
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