Fault Designation: RADIO ALTIMETER BUS
Bus Type: Basic

Honeywell

MK XXII EGPWS Installation Manual

TABLE E 3.1.8-1: RADIO ALTITUDE INPUT SELECT TYPE 1 (ALT 55)

SIGNAL

CONNECTION

SUMMARY DATA

Radio Altimeter #1

(+) = J1-64

 

Format: Alt 55 with Validity Flag

 

 

 

 

 

 

(-) = J1-45

 

Input Type: Basic

 

 

 

 

 

 

 

 

Fault Designation: RADIO ALTIMETER FAULT

 

 

 

Validity: Radio Altitude Valid Discrete #1 (+28V)

PIN FUNCTION

CONNECTION

PIN TYPE

CHANNEL DESIGNATION

 

 

 

Polarity/Configuration

 

 

 

 

 

 

REFERENCE

 

 

 

 

 

 

 

Radio Altitude Validity

J1-29

Input

28V_DISC_07

 

 

>+17V = Valid

 

Discrete #1 (+28V)

 

 

 

 

 

 

<+4.4V = Invalid

 

 

 

DH Discrete (Gnd)

J1-33

Input

GND_DISC_11

 

 

Gnd = Below DH

 

 

 

 

 

 

 

 

<not> Gnd = Above DH

 

 

 

CONFIGURATION DATA

 

Description

 

Value

Out of Track Maximum

 

Pseudo altitude is only allowed to operate within

 

2800

 

 

 

Out of Track Minimum

 

these limits.

 

 

 

-20

 

 

 

Pseudo Altitude Type

 

Selects parameters for pseudo altitude engage logic

4

 

 

 

Field Enable Type

 

Selects pseudo altitude field elevation

 

2

 

 

 

CHANNEL

429RX_5

TABLE E 3.1.8-2: RADIO ALTITUDE INPUT SELECT TYPE 2 (ARINC 429) CONNECT TO:

Left ( #1) LRRA

(Low Speed)

A = J2-21

 

 

Data

B = J2-4

 

Radio Altitude

PIN FUNCTION

 

CONNECTION

 

 

 

 

DH Discrete (Gnd)

 

J1-33

 

 

 

 

 

 

Label

Sig. Bits

Range

 

 

 

164

16

±8192 FT

 

PIN TYPE

 

CHANNEL DESIGNATION

 

 

 

 

 

REFERENCE

 

Input

 

GND_DISC_11

 

 

 

 

 

 

 

 

 

Signal Type

 

Resolution

Basic

 

0.125

Polarity/Configuration

 

Gnd = Below DH

 

 

 

 

<not> Gnd = Above DH

 

 

Rate (ms)

25-50

SIGNAL

Radio Altimeter #1

TABLE E 3.1.8-3: RADIO ALTITUDE INPUT SELECT TYPE 3 (RT-200/300)

CONNECTION

 

SUMMARY DATA

(+) = J1-64

 

Format: DC with Validity Flag (RT-200/300)

(-) = J1-45

 

Input Type: Basic

 

 

Fault Designation: RADIO ALTIMETER FAULT

 

 

Validity: Radio Altitude Valid Discrete #1 (+28V)

PIN FUNCTION

CONNECTION

 

PIN TYPE

CHANNEL DESIGNATION

 

Polarity/Configuration

 

 

 

 

REFERENCE

 

 

Radio Altitude Validity

J1-29

 

Input

28V_DISC_07

 

>+17V = Valid

Discrete #1 (+28V)

 

 

 

 

 

<+4.4V = Invalid

DH Discrete (Gnd)

J1-33

 

Input

GND_DISC_11

 

Gnd = Below DH

 

 

 

 

 

 

<not> Gnd = Above DH

CONFIGURATION DATA

Description

Value

Out of Track Maximum

Pseudo altitude is only allowed to operate within

2800

Out of Track Minimum

these limits.

-20

Pseudo Altitude Type

Selects parameters for pseudo altitude engage logic

3

Field Enable Type

Selects pseudo altitude field elevation

2

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

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Honeywell MKXXII installation manual PIN Function Connection, PIN Type Channel Designation Reference