Honeywell MKXXII installation manual Table E 3.1.13-129 INPUT/OUTPUT Discrete Type

CONN PIN #

J1-38

J1-19

J1-37

J1-18

J1-36

J1-17

J1-35

J1-16

J1-15

J1-14

J1-13

J1-8

J1-12

J1-34

J1-72

J1-55

J1-78

J1-77

J1-76

J1-73

J1-69

J1-54

J1-51

J1-49

J1-52

J1-48

J1-67

J2-15

J2-31

J1-50

CHANNEL

DESIGNATION

REFERENCE

28V_DISC_02

GND_DISC_02

28V_DISC_03

GND_DISC_03

28V_DISC_04

GND_DISC_04

28V_DISC_05

GND_DISC_05

GND_DISC_06

GND_DISC_07

GND_DISC_08

28V_DISC_09

GND_DISC_09

GND_DISC_10

MON_OUT_1

MON_OUT_2

DISC_OUT_1

DISC_OUT_2

DISC_OUT_3

DISC_OUT_4

DISC_OUT_5

DISC_OUT_6

DISC_OUT_8

DISC_OUT_9

DISC_OUT_7

28V_DISC_11

GND_DISC_14

28V_DISC_13

GND_DISC_15

MON_OUT_3

Honeywell

MK XXII EGPWS Installation Manual

TABLE E 3.1.13-129: INPUT/OUTPUT DISCRETE TYPE 129

PIN TYPE	PIN FUNCTION
Input	+28V Glideslope Inhibit Discrete
Input	GND Glideslope Inhibit Discrete
Input	+28V WOW Discrete
Input	GND WOW Discrete
Input	+28V Audio Inhibit Discrete
Input	Timed Audio Inhibit Discrete
Input	+28V Landing Gear Discrete
Input	GND Landing Gear Discrete
Input	Glideslope Cancel Discrete (Note 1)
Input	Low Altitude Mode Select (Tactical) (Note 1)
Input	Mode 6 Low Volume Discrete
Input	Autopilot Engaged Discrete #1
Input	Terrain Awareness Inhibit Discrete (Note 2)
Input	Self-Test Discrete (Note 1)
Output	GPWS INOP Discrete
Output	TAD INOP Discrete
	Terrain Not Available
	GPWS Warning Discrete
Output	Terrain Awareness Warning
	Obstacle Awareness Warning
	GPWS Alert Discrete
Output	Terrain Awareness Caution
	Obstacle Awareness Caution
Output	Glideslope Cancel Discrete
Output	Low Altitude Mode Discrete (Tactical)
Output	TCAS Inhibit discrete
Output	Terrain Display Select #1 Discrete
Output	Terrain Awareness Caution or Warning
	Obstacle Awareness Caution or Warning
Output	Terrain Display Select #2 Discrete
Output	Timed Audio Inhibit
Input	Not Defined in this ID (Note 3).
Input	Not Defined in this ID (Note 3).
Input	Not Defined in this ID (Note 3).
Input	Not Defined in this ID (Note 3).
Output	Not Defined in this ID (Note 3).

Polarity/Configuration

>+17V = Inhibit <+4.4V = Not Inhibit

Gnd = Inhibit

<not> Gnd = Not Inhibit

>+17V = WOW <+4.4V = Not WOW

Gnd = WOW

<not> Gnd = Not WOW

>+17V = Inhibit <+4.4V = Not Inhibit

Gnd = Audio Inhibit Toggle <not> Gnd = Audio Inhibit Not Toggle

>+17V = Gear Down <+4.4V = Gear Up

Gnd = Gear Down <not> Gnd = Gear Up

Gnd = Cancel Toggle <not> Gnd = Normal

Gnd = Low Altitude Mode Select

<not> Gnd = Normal

Gnd = Low Volume <not> Gnd = Normal

>+17V = Engaged <+4.4V = Not Engaged

Gnd = Inhibit

<not> Gnd = Not Inhibit

Gnd = Self-Test Toggle <not> Gnd = Normal

Gnd = Terrain Pop Up

Gnd = Audio Inhibit

Configuration Data			Possible States
		Lamp Format	Type 1,Type 2
	Flashing Lamps		True, False

Note 1: Provided by Momentary cockpit switch (non-latching)

Note 2: Provided by Alternate cockpit switch (Latching) with guard if inhibiting

Note 3: This discrete may be used in another category.

State

Type 2

False

CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO: 060-4314-225 REV: C SHEET 244