Electrical Specifications - Garmin G300 Installation Manual

2.1.3 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 ADAHRS/Engine LRU
•
SL40 Comm Transceiver

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 WAAS enabled, high-sensitivity GPS receiver that continuously tracks and uses up
to 12 satellites to compute and update it's position.
Characteristics
Acquisition Time
Update Rate
Positional Accuracy
Velocity Accuracy
Antenna power supply
Max Input Signal
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
0.05 meter/sec steady state
Voltage (4.5 to 5.0), current (50 mA max)
40dB
Specifications
14/28 VDC
28V (Maximum)
15W, 0.540 Amp
15W, 0.540 Amp
Specifications
G300 Installation Manual – GDU 37X
28V (Typical)
8.5W, .300 Amp
9.25W, .330 Amp
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