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B
2.2.3 Processor Installation
2.2.3.1
Cooling Considerations
The KMH 820/KTA 810 requires no external forced air cooling.
2.2.3.2
Installation Considerations
Consideration should be given to the following items affected by the choice of
installation location within the aircraft:
A. Environmental Considerations
B. Ease of Interface to aircraft systems
C. GPS Antenna location and coaxial cable length
D. Ability to extract and insert new terrain/obstacle Data Bases supplied on a
CompactFlash Card.
If possible, install the KMH 820/KTA 810 in a dry, temperature-controlled area
such as within the passenger compartment of the aircraft. Standard avionics bays
are acceptable as well.
If possible, the KMH 820/ KTA 810 should NOT be located in close proximity to
equipment which produce considerable heat.
Locations, which require disassembly of the aircraft to gain access, are less desir-
able.
Any location that is exposed to moisture and/or temperature extremes should be
avoided.
Select a mounting location that allows sufficient clearance at the front of the unit
for connectors and cables.
The +28 VDC power wire(s) for the KMH 820/KTA 810 may be routed with the pri-
mary wiring harness for the system and with existing aircraft wiring bundles. There
are no requirements to separate the wire(s) from the bundles.
Do not bundle data lines or antenna cable with any aircraft high current power
cables.
No more than 8.0dB signal loss is allowed in both GPS antenna cable runs,
including the antenna splitter, (if used). Refer to Note 5 on the Antenna Interface
Drawing and
Rev 3, August/2002
Table 1-13
in Section 1 for information on cable types and lengths.
10609I03.CDL
KMH 880/KTA 870
Page 2-3
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