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B
Maximum Recommended Cable Length 50 Feet
Pin Assignment (Signal Mnemonic)
RS422_DATA+
RS422_DATA-
RS422_CLK+
RS422_CLK-
4.3
GROUND TEST PROCEDURES
4.3.1
Required Testing Equipment
• Personal Computer with Diagnostic Program (WinViews for the EGPWS
ground tests and TASDIAG for TAS ground tests). (See
• TCAS Ramp Test Set; TCAS 201, BFG TT391 Flightline Tester or equivalent.
• Transponder Ramp Test Set.
• Pitot-Static Test Set.
• Radio Altimeter Test Set, or equivalent.
• Volt-Ohmmeter (DVM) (optional).
• 429 Bus reader (optional).
4.3.2
EGPWS Ground Test Procedures (066-01175-x101 only).
This Ground Test Procedure is designed to minimize potential equipment dam-
age and verify proper operation of the Honeywell EGPWS as installed in the air-
craft.
A.
Review your aircraft installation drawings against the manufacturer's data
sheets and verify that all necessary connections are included on your
drawings and that the pin numbers are in agreement.
B.
With all units disconnected and aircraft power off, do a point to point wiring
check using an ohm meter to verify proper wiring interconnect.
C.
With all units disconnected, apply aircraft DC power and verify that power is
supplied to the power input pins.
D.
Remove power from the aircraft and connect all units.
E.
Connect a PC to the RS-232 communications port of the EGPWS unit.
Rev 3, August/2002
J10-34
J10-35
J10-36
J10-37
10609I03 CDL
KMH 880/KTA 870
Appendix
D).
Page 4-19
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