Honeywell MKXXII installation manual Category 9 Navigation Inputs Select

Honeywell

MK XXII EGPWS Installation Manual

3.3.9 Category 9 – Navigation Inputs Select

Category 9 selects the Glideslope and Localizer Deviation interfaces and Glideslope Validity and ILS Tuned discretes.

Appendix E Table E 3.1.9 defines the Category 9 Navigation Inputs Select options (called Navigation Inputs Select Types) and identifies the first MK XXII EGPWS version in which the option was available (see the Effectivity entry).

3.3.9.1 Instructions

1.Using Appendix E Tables E 3, E 3.1.9 and E 3.1.9-xas described above, select the Navigation Input Select Type that matches the aircraft configuration, feature preferences, and version (part number) being installed.

2.Record the ID number for the Navigation Inputs Select Type from Appendix E Table E 3 under the Ident No. heading for Step (Category) 9. This number will be used during programming of the configuration module.

3.Using the Navigation Inputs Select number from Appendix E Table E 3.1.9 as “x”, go to Appendix E Table E 3.1.9-x. .The electrical interfaces (pin-outs) for the Navigation Inputs Select Type are shown in Appendix E Table E 3.1.9-xand are used to determine the wiring interconnects and record it on Appendix A Fig A1-1.

Navigation Inputs Select (Glideslope & Localizer Inputs)

Glideslope Deviation is basic (required) and is available in analog and digital formats. Localizer Deviation is an enhancement (not required) and is available in digital format only.

Glideslope Validity

Glideslope Validity (+28V Super Flag) is required for Navigation Inputs Select 0 at pin J1-11.

Glideslope Validity (Low Level) is required for Navigation Inputs Select 1 at pins J1-30 (+) and J1-10 (-).

Digital 429 Glideslope interfaces (Navigation Inputs 2 & 3) do not require Glideslope Validity input.

ILS Tuned Discrete Input #1 (+28V) and #2 (GND)

The ILS Tuned Discrete indicates that an Instrument Landing System frequency has been selected on the Captain’s (or selected) ILS. The ILS Tuned Discretes #1 (+28V) and #2 (GND) are optional to each other. These discretes are used with the analog Glideslope inputs. When an ILS is tuned, the MK XXII EGPWS checks the Glideslope Validity discretes and monitors the Glideslope inputs.

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