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MK XXII EGPWS Installation Manual
CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO: 060-4314-225 REV: C
SHEET
240
E 5.3.11 CATEGORY 11, HEADING INPUT SELECT
The following table provides identification of the Heading type. The entry in the Heading Input Select corresponds to a table
that provides detailed information on the configuration. For example, the details for Magnetic Heading Input Select #1 are
found in 0-1.
In this category, only the following signals are defined:
•
Magnetic Heading
TABLE E 3.1.11: HEADING INPUT SELECT FOR EGPWS MK XXII
ID
Heading Input
Select
Description Effectivity
(Table E 3.1.11-x) App. Cfg.
00
Analog Magnetic Heading (3-Wire Synchro with
reference and validity discrete)
-001 -001
2 2 High Speed ARINC 429 (Note 1) -006 -006
Note 1: ID 2 is intended to be used in conjunction with Category 10 (Attitude) ID 128.
TABLE E 3.1.11-0: HEADING INPUT SELECT 0
SIGNAL CONNECTION SUMMARY DATA
Magnetic Heading
(X) = J1-22
(Y) = J1-23
(Z) = J1-3
Reference
(H) = J1-4
(C) = J1-24
Format: 5 Wire Synchro with Validity Flag
Input Type: Basic
Fault Designation: MAGNETIC HEADING FAULT
Validity: Magnetic Heading Validity Discrete (+28V)
Reference: Nominal 26 VAC
PIN FUNCTION
CONNECTION PIN TYPE
CHANNEL DESIGNATION
REFERENCE
Polarity/Configuration
Magnetic Heading
Validity Discrete
J1-28 Input 28V_DISC_10 >+17V = Valid
< +4.4V = Invalid
TABLE E 3.1.11-2: HEADING INPUT SELECT 2
CHANNEL
429RX_7
CONNECT TO:
AHRS
(High Speed)
Fault Designation: AHRS BUS
Bus Type: Basic
A = J2-23
B = J2-6
Data
Magnetic Heading
Label
320
Sig. Bits
15
Range
±180 degrees
Signal Type
Basic
Resolution
0.0054931640625
Rate (ms)
10-50