Honeywell

MK XXII EGPWS Installation Manual

SIGNAL

Uncorrected Barometric Altitude

Outside Air Temp Total Air Temperature

CONNECTION

(+)= J1-62 (-) = J1-43

TABLE E 3.1.2-3: AIR DATA INPUT SELECT #3

SUMMARY DATA

Format: DC with Validity Flag

Input Type: Basic

Fault Designation: BAROMETRIC ALTITUDE FAULT

Validity: Barometric Alt Valid (+28V)

Format: DC

Input Type: Basic

Fault Designation: STATIC AIR TEMPERATURE FAULT

Probe element Excitation:

Temp Input (probe element):

Ground

5 V = J1-25

(+)= J1-63 (-) = J1-44

GND = J1-53

J1

OAT PROBE ELEMENT

Voat

25(5 V Ref)

4.42K Ohms

63

 

+

 

Temp In

-

44

 

 

 

 

 

 

 

 

 

 

 

 

53 Chassis Gnd

Computed Airspeed

PIN FUNCTION

Barometric Altitude Validity Discrete (+28V)

No Connection

CONNECTION

J1-9

N/A

PIN TYPE

Input

Note: Nominal 500 Temperature Probe only.

Resistance @ 0°C: 500Ω ± 0.6

Connection example:

CIC Temperature Sensor, P/N 05257 (2 wire). Connect positive lead to both J1-25 and J1-63. Connect negative lead to both J1-44 and J1- 53 (Chassis Ground).

Other probes may have three contacts.

Substitute Ground Speed for Airspeed (airspeed is not available with this air data input)

 

CHANNEL

 

 

 

 

DESIGNATION

 

Polarity/Configuration

References

 

REFERENCE

 

 

 

 

28V_DISC_08

 

>+17V = Valid

6.6.19

 

 

 

< +4.4V = Invalid

4.2.7

 

 

 

 

 

 

 

 

 

 

Configuration Data

Derive Baro Altitude Rate

Type

Analog

Summary Data

Baro Altitude Rate is derived using Uncorrected Barometric Altitude. Baro Rate is not available with this air data source.

CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO: 060-4314-225

REV: C SHEET 191

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Honeywell MKXXII installation manual Table E 3.1.2-3 AIR Data Input Select #3 Summary Data