Honeywell

MK XXII EGPWS Installation Manual

3.3.7.8 WOW Reversal

The WOW discrete input is defined in Category 13. The Category 7 control is used to reverse the defined logic to match aircraft wiring, if necessary.

+28 VDC WOW discrete active position:

WOW Discrete (Category 13)

WOW Discrete = +28V

WOW Discrete = Open

WOW Reversal

Not Selected

Selected

WOW

Not WOW

Not WOW

WOW

Ground seeking WOW discrete active position:

WOW Discrete (Category 13)

WOW Discrete = GND

WOW Discrete = Open

WOW Reversal

Not Selected

Selected

WOW

Not WOW

Not WOW

WOW

3.3.7.9 GPS Altitude Reference

The GPS Altitude (label 076, Category 3) may be referenced to mean sea level (MSL) or WGS-

84.Determine which reference the GPS position uses and set the GPS Altitude Reference accordingly in this Category. If using the internal GPS card select MSL.

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

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Honeywell MKXXII installation manual WOW Reversal, GPS Altitude Reference