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G900X/G950 Installation and Maintenance Manual – G900X Installation Overview
Revision D
190-00719-00
1.3.4 Environmental
Specifications
Refer to the applicable environmental qualification form (Table 1-5) for a complete list of environmental
characteristics.
Table 1-5. G900X/G950 LRU Environmental Qualification Forms
Document
Garmin Part Number
GDU 1040 Environmental Qualification Form
005-00150-02
GMA 1347 Environmental Qualification Form
005-00155-79
GEA 71 Environmental Qualification Form
005-00147-02
GDC 74A Environmental Qualification Form
005-00191-77
GRS 77 Environmental Qualification Form
005-00165-31
GMU 44 Environmental Qualification Form
005-00164-31
GTX 33 Environmental Qualification Form
005-00131-03
GCU 476 Environmental Qualification Form
005-00299-01
GDL 69/69A Environmental Qualification Form
005-00217-33
GIA 63W Environmental Qualification Form
005-00148-02
GWX 68 Environmental Qualification Form
005-00171-00
GA 56A Environmental Qualification Form
005-00240-00
GA 56W Environmental Qualification Form
005-00232-00
GA 57 Environmental Qualification Form
005-00240-00
GRT Environmental Qualification Form
005-00217-86
GRC Environmental Qualification Form
005-00217-85
1.3.5 Cooling
Requirements
External cooling is required for the GIA 63W, GDU 1040, and GTX 33. External cooling is optional for
all other G900X/G950 LRUs. When external cooling is required the following guidelines should be
followed:
•
All external cooling fans should be connected to their own circuit breaker. If this is not possible,
all external cooling fans should be combined on the same circuit breaker as the LRU they are
cooling (proper circuit breaker sizing considerations must be taken into consideration).
•
If a form of forced air cooling is installed, make certain that rainwater or condensation cannot
enter and be sprayed on the equipment.
