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MK XXII EGPWS Installation Manual
CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO: 060-4314-225 REV: C
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3.2.3 GPS Antenna
A GPS antenna connector is available on the front of the MK XXII EGPWS 965-1590-0XX.
3.2.4 Analog and Digital Inp uts
The analog and digital inputs to the MK XXII EGPWS are defined as the Categories are selected.
Instructions for documenting these interfaces are provided with the Category selection
instructions. Section 3.3 contains detailed category configuration information.
3.2.5 Discrete Inputs
Additional information for some discretes is provided within the Category in which they are used.
See section 3.3.13.
3.2.6 Serial Outputs
The EGPWC provides for ARINC 453 and ARINC 429 serial outputs.
Terrain display data is output on two ARINC 453 channels when the Terrain Awareness display
function is enabled.
Two ARINC 429 low speed output buses provided by the EGPWC. The ARINC 429 output data
includes:
1. Internal data (data output for test purposes only such as internal logic booleans, Geometric
Altitude, and Terrain Clearance information).
2. Alert/Warning status (Voice and Lamp activity can be provided to display systems and flight
recorders).
3. Internal mode status.
4. Terrain display messages for TAD cockpit integration.
Note: During EGPWS Self Test, the SSM of each output label is set to the Functional Test status
code.
For category configuration information see section 3.3.6.