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Honeywell
MK XXII EGPWS Installation Manual
CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO: 060-4314-225 REV: C
SHEET
244
TABLE E 3.1.13-129: INPUT/OUTPUT DISCRETE TYPE 129
CONN PIN # CHANNEL
DESIGNATION
REFERENCE
PIN TYPE PIN FUNCTION Polarity/Configuration
J1-38 28V_DISC_02
Input
+28V Glideslope Inhibit Discrete >+17V = Inhibit
<+4.4V = Not Inhibit
J1-19 GND_DISC_02
Input
GND Glideslope Inhibit Discrete Gnd = Inhibit
<not> Gnd = Not Inhibit
J1-37 28V_DISC_03
Input
+28V WOW Discrete >+17V = WOW
<+4.4V = Not WOW
J1-18 GND_DISC_03
Input
GND WOW Discrete Gnd = WOW
<not> Gnd = Not WOW
J1-36 28V_DISC_04
Input
+28V Audio Inhibit Discrete >+17V = Inhibit
<+4.4V = Not Inhibit
J1-17 GND_DISC_04
Input
Timed Audio Inhibit Discrete Gnd = Audio Inhibit Toggle
<not> Gnd = Audio Inhibit
Not Toggle
J1-35 28V_DISC_05
Input
+28V Landing Gear Discrete >+17V = Gear Down
<+4.4V = Gear Up
J1-16 GND_DISC_05
Input
GND Landing Gear Discrete Gnd = Gear Down
<not> Gnd = Gear Up
J1-15 GND_DISC_06
Input
Glideslope Cancel Discrete (Note 1) Gnd = Cancel Toggle
<not> Gnd = Normal
J1-14 GND_DISC_07
Input
Low Altitude Mode Select (Tactical) (Note 1) Gnd = Low Altitude Mode
Select
<not> Gnd = Normal
J1-13 GND_DISC_08
Input
Mode 6 Low Volume Discrete Gnd = Low Volume
<not> Gnd = Normal
J1-8 28V_DISC_09
Input
Autopilot Engaged Discrete #1 >+17V = Engaged
<+4.4V = Not Engaged
J1-12 GND_DISC_09 Input Terrain Awareness Inhibit Discrete (Note 2) Gnd = Inhibit
<not> Gnd = Not Inhibit
J1-34 GND_DISC_10
Input
Self-Test Discrete (Note 1) Gnd = Self-Test Toggle
<not> Gnd = Normal
J1-72 MON_OUT_1 Output GPWS INOP Discrete
J1-55 MON_OUT_2
Output
TAD INOP Discrete
Terrain Not Available
J1-78 DISC_OUT_1
Output
GPWS Warning Discrete
Terrain Awareness Warning
Obstacle Awareness Warning
J1-77 DISC_OUT_2
Output
GPWS Alert Discrete
Terrain Awareness Caution
Obstacle Awareness Caution
J1-76 DISC_OUT_3 Output Glideslope Cancel Discrete
J1-73 DISC_OUT_4 Output Low Altitude Mode Discrete (Tactical)
J1-69 DISC_OUT_5 Output TCAS Inhibit discrete
J1-54 DISC_OUT_6 Output Terrain Display Select #1 Discrete
J1-51 DISC_OUT_8
Output
Terrain Awareness Caution or Warning
Obstacle Awareness Caution or Warning
Gnd = Terrain Pop Up
J1-49 DISC_OUT_9 Output Terrain Display Select #2 Discrete
J1-52 DISC_OUT_7 Output Timed Audio Inhibit Gnd = Audio Inhibit
J1-48 28V_DISC_11
Input
Not Defined in this ID (Note 3).
J1-67 GND_DISC_14 Input Not Defined in this ID (Note 3).
J2-15 28V_DISC_13 Input Not Defined in this ID (Note 3).
J2-31 GND_DISC_15 Input Not Defined in this ID (Note 3).
J1-50 MON_OUT_3 Output Not Defined in this ID (Note 3).
Configuration Data Possible States State
Lamp Format Type 1,Type 2 Type 2
Flashing Lamps True, False 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.