190-01115-01 G3X™/G3X Touch™ Avionics Installation Manual
Rev. AV Page D-2
D.4 GDU 4XX
D.4.1 GPS Specifications
The GDU 4XX uses a high-sensitivity GPS receiver that continuously tracks and uses up to 12 satellites to
compute and update its position. In an installation with multiple GDU 4XX units, each GDU can be
configured to use its own internal GPS receiver, or to receive GPS data transmitted by another GDU. At
least one GDU must be equipped with a GPS antenna. See Section 30.4.24
for further information.
D.4.2 Environmental Specifications
The GDU 4XX has an Operating Temperature Range of -20°C to +60°C.
D.5 GEA™ 24 Engine Interface Module
D.5.1 Environmental Specifications
The GEA 24 has an Operating Temperature Range of -45°C to +70°C.
Table D-2 GDU 4XX GPS Specifications
Characteristics Specifications
Acquisition Time
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
Update Rate 5/second, continuous
Positional Accuracy <10 meters
Antenna Power Supply Voltage (4.5 to 5.0), current (50 mA max)
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