190-01115-01 G3X™/G3X Touch™ Avionics Installation Manual
Rev. AV Page D-1
APPENDIX D LRU PERFORMANCE SPECIFICATIONS/LICENSING/
COMPLIANCE
This section contains various performance specification, licensing, and compliance info for the G3X™
avionics LRUs.
D.1 GAD 29
D.1.1 Environmental Specifications
The GAD 29 has an Operating Temperature Range of -45° C to +70° C
D.2 GAP 26
D.2.1 Environmental Specifications
The GAP 26 has an Operating Temperature Range of -55° C to 240° C
D.3 GDU™ 37X Display
D.3.1 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. In an installation with multiple GDU 37X 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 Appendix H.4.15
(for GDU 37X systems) and
Section 30.4.24
for (GDU 4XX systems) for further information.
D.3.2 Environmental Specifications
The GDU 37X has an Operating Temperature Range of -20°C to +60°C.
Table D-1 GDU 37X 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® global positioning indicator (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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