Honeywell MKXXII installation manual Configuration Module Interface, GPS Antenna Input

Honeywell

MK XXII EGPWS Installation Manual

The Ground discretes are internally biased via a pull up resistor, and are externally pulled down to ground when active. The characteristics of each Ground discrete input are as follows:

Ground Discrete Characteristics
Quantity	15
Active Voltage Range (Logic True)	< +3 VDC
Inactive Voltage Range (Logic False)	> 100 KΩ (to ground) or > +3.5 VDC
Diode Isolation	Each input is diode isolated to prevent current sinking
Input Impedance	> 10 KΩ
Maximum Fault Current	< 100 ∝A (at +28 VDC input)
Pin Assignment (Signal Mnemonic):	See specific discrete in Category 13 (GND_DISC_xx)

E 4.2.11 CONFIGURATION MODULE INTERFACE

System configuration is defined via a Configuration Module, which resides in the MKIV/VI/VIII/XXII EGPWS aircraft wiring harness backshell. The EGPWS Configuration Module contains the aircraft interface and functionality definitions specific to the installed aircraft. Refer to Section 5 for interface and functional definitions by category.

Electrical Characteristics Data definition

Pin Assignment (Signal Mnemonic): Clock

Master Data Out

Master Data In Configuration Module Select Configuration Module +5VDC Configuration Module +5VDC Return

Refer to the EGPWS Configuration Module specification Refer to the EGPWS Configuration Module specification

J2-32 (RED)		(SPICLK)
J2-50 (BLK)		(SPIMOSI)
J2-33	(ORN)	(SPIMISO)
J2-49	(WHT)	(SPISEL_CM#)
J2-17	(VIO)	(SC_PWR)
J2-16 (BLU)		(GND)

Output to Config Module

Clock Out

Master Data Out

Config Module Select

Logic Low (nominal)

EMK4/6/8/22

0 V

0 V

0 V

Logic High (nominal)

EMK4/6/8/22

5 V

5 V

5 V

INTERFACE OF EGPWS OUTPUTS TO CONFIGURATION MODULE

E 4.2.12 GPS ANTENNA INPUT

A GPS input connector is available on the front of the MK VI EGPWS (965-1186-0XX only), MK VIII EGPWS (965-1216- 0XX only), MK XXII EGPWS (965-1590-0XX only), and MK IV EGPWS (965-1686-0XX only).

Quantity	1
Cable Length/Allowed Signal Loss	Not more than 8 dB, at 1575.42 MHz, for cable and
	connector loss from antenna to unit.
Connector Type	TNC
Low Level DC on RF Output	+5 VDC ±5%, 50 mAmps maximum, Shield Ground.
Pin Assignment (Signal Mnemonic):	GPS ANT	(COAX)

CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO: 060-4314-225 REV: C SHEET 175