Garmin GAD 42 Maintenance Manual - Page 5

Repair, Technical Specifications, Gad 42 Installation, General Description, Analog Pc Board - gad 42 adapter

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The GAD 42 Interface Adapter is a microprocessor based input/output (I/O) system used to interface multiple analog and digital avionics systems to Garmin long-range navigation products. Functions provided by the GAD 42 Interface Adapter include: • Input analog or 429 heading information to be sent as 429 data • Input remote selected course from analog or RS 422 sources to be sent as 429 data • Input analog true airspeed to be sent as 429 data • Output main analog RMI/OBI bearing information received as 429 data • Output NAV analog RMI/OBI bearing information received as 429 data • Output analog selected course information received as 429 data • Output analog roll steering information received as 429 data • Output RS 422 NAV data from NAV 429 data • Output 561, 568 or King serial data from GPS 429 data • Output high speed 429 data from low speed GPS 429 data 2.0 REPAIR The GAD 42 contains no field-repairable components. Return faulty units to GARMIN for service. 3.0 TECHNICAL SPECIFICATIONS Technical specifications for the GAD 42 are listed in the GAD 42 Installation Manual, P/N 190-00159-00. 4.0 GAD 42 INSTALLATION Installation information for the unit is found in the GAD 42 Installation Manual. 5.0 GENERAL DESCRIPTION The GAD 42 Interface Adapter consists of two internal printed circuit board assemblies, the Analog PC Board and the CPU PC Board. 5.1 Analog PC Board The Analog PC Board contains the unit power supplies, superflag outputs, and analog I/O circuitry. A 44-pin high-density D-subminiature aircraft interface connector provides interfaces to aircraft power and other avionics. Three 18-pin header board interface connectors provide interconnect to the CPU PC board. GAD 42 MAINTENANCE MANUAL P/N 190-00159-01 Page 4 Rev. A

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GAD 42 MAINTENANCE MANUAL
Page 4
P/N 190-00159-01
Rev. A
The GAD 42 Interface Adapter is a microprocessor based input/output (I/O) system used to
interface multiple analog and digital avionics systems to Garmin long-range navigation products.
Functions provided by the GAD 42 Interface Adapter include:
•
Input analog or 429 heading information to be sent as 429 data
•
Input remote selected course from analog or RS 422 sources to be sent as 429 data
•
Input analog true airspeed to be sent as 429 data
•
Output main analog RMI/OBI bearing information received as 429 data
•
Output NAV analog RMI/OBI bearing information received as 429 data
•
Output analog selected course information received as 429 data
•
Output analog roll steering information received as 429 data
•
Output RS 422 NAV data from NAV 429 data
•
Output 561, 568 or King serial data from GPS 429 data
•
Output high speed 429 data from low speed GPS 429 data
2.0
REPAIR
The GAD 42 contains no field-repairable components. Return faulty units to GARMIN for
service.
3.0
TECHNICAL SPECIFICATIONS
Technical specifications for the GAD 42 are listed in the GAD 42 Installation Manual,
P/N 190-00159-00.
4.0
GAD 42 INSTALLATION
Installation information for the unit is found in the GAD 42 Installation Manual.
5.0
GENERAL DESCRIPTION
The GAD 42 Interface Adapter consists of two internal printed circuit board assemblies, the
Analog PC Board and the CPU PC Board.
5.1
Analog PC Board
The Analog PC Board contains the unit power supplies, superflag outputs, and analog I/O
circuitry. A 44-pin high-density D-subminiature aircraft interface connector provides interfaces
to aircraft power and other avionics.
Three 18-pin header board interface connectors provide
interconnect to the CPU PC board.