Honeywell MK VI - Manual (Page 255)

Honeywell
MK VI MK VIII EGPWS Installation Design Guide
Proprietary notice on title page applies
CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO: 060-4314-150 REV: SHEET 255
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
#0 are found in Table 5.3.11-0.
In this category, only the following signals are defined:
• Magnetic Heading
• True Heading
Table 5.3.11: Heading Input Select
ID
Heading Input
Select
Description
Software
Effectivity
EGPWS
Effectivity
(Table 5.3.11-x) MKVI MK VIII
0 0
Analog Magnetic Heading
(3-Wire Synchro with reference and validity discrete)
-020 X X
1
2 2
Digital Magnetic Heading
(High Speed ARINC 429) (Note 2)
-020 X X
3 3
Digital Magnetic Heading and True Heading
(High Speed ARINC 429) (Note 2)
-020 X X
254 254
Digital True Heading
(ARINC 429 via dual IOC buses) (Note 1)
-020 N/A X
255 255
Digital Magnetic Heading
(ARINC 429 via dual IOC buses) (Note 1)
-020 N/A X
Note 1: ID 254 and 255 may only be used in conjunction with other IOC bus selections for categories 2,6,8,9,10 and 12.
Note 2: Category 10 and Category 11 use the same ARINC 429 receiver if a digital source is selected.
Table 5.3.11-0: Heading Input Select 0
SIGNAL CONNECTION REFERENCE SUMMARY DATA
Magnetic Heading
(X) = J1-22
(Y) = J1-23
(Z) = J1-3
Reference
(H) = J1-4
(C) = J1-24
6.1.9
4.2.4.2
4.2.4.4
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 References
Magnetic Heading
Validity Discrete
J1-28 Input 28V_DISC_10 >+17V = Valid
< +4.4V = Invalid
6.6.23
4.2.7
Table 5.3.11-2: Heading Input Select Type 2
CHANNEL
429RX_7
CONNECT TO: AHRS
Format: ARINC 429 (High Speed) Fault Designation: AHRS BUS
Bus Type: Basic
A = J2-23
B = J2-6
Data
Magnetic Heading
Reference
6.2.32
Label
320
Sig. Bits
15
Range
±180 degrees
Signal Type
Basic
Resolution
0.0054931640625
Rate (ms)
10-20