Electrical Specifications - Garmin GDU 370 Installation Manual

2.1.2 Interface Summary
The GDU 37X uses CAN and RS-232 communications interfaces. The GDU 37X communicates with the
following Garmin LRUs:
•
Other GDU 37X
•
GSU 73
•
SL30 Nav/Comm Transceiver
•
SL40 Comm Transceiver
•
GNS 400/500 Series Units
•
GTX 327/330 Transponder

2.2 Electrical Specifications

2.2.1 Electrical Characteristics
Characteristics
Power Requirements
2.2.2 Power Consumption
LRU 14V (Maximum)
GDU 370 15W, 1.10 Amp
15W, 1.10 Amp
GDU 375
2.2.3 GPS Specifications
The GDU 37X uses a high-sensitivity GPS receiver that continuously tracks and uses up to 12 satellites to
compute and update its position.
Characteristics
Acquisition Time
Update Rate
Positional Accuracy
Antenna Power Supply
Page 2-2
Revision A
Table 2-1. GDU 37X Supply Voltages
Table 2-2. GDU 37X Power Requirements
14V (Typical)
8.5W, .600 Amp
9.5W, .675 Amp
Table 2-3. GDU 37X GPS Specifications
a) Warm Start (position known to 10 nm, time known to 10
minutes, with valid almanac and ephemeris): Less than 5
seconds
b) Cold Start (position known to 300 nm, time known to 10
minutes, with valid almanac): Less than 45 seconds
c) AutoLocate™ (with almanac, without initial position or
time): Less than 60 seconds
5/second, continuous
<10 meters
Voltage (4.5 to 5.0), current (50 mA max)
Specifications
14/28 VDC
28V (Maximum)
15W, 0.540 Amp
15W, 0.540 Amp
Specifications
G3X Installation Manual – GDU 37X
28V (Typical)
8.5W, .300 Amp
9.25W, .330 Amp
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