Garmin GNC 255 - General Description and Specifications; Introduction and Equipment Overview; Technical Performance Specifications

190-01182-02 GTR 225/GNC 255 TSO Installation Manual
Rev. B Page iii
TABLE OF CONTENTS
1 GENERAL DESCRIPTION ............................................................................................................1-1
1.1 Introduction ......................................................................................................................................1-1
1.2 Equipment Description ....................................................................................................................1-1
1.3 Technical Specifications ..................................................................................................................1-2
1.3.1 Physical Characteristics ................................................................................................................1-2
1.3.2 General Specifications ..................................................................................................................1-2
1.3.3 Display ..........................................................................................................................................1-3
1.3.4 COM Specifications .....................................................................................................................1-3
1.3.5 VOR Specifications .....................................................................................................................1-4
1.3.6 LOC Specifications .......................................................................................................................1-5
1.3.7 Glideslope Specifications .............................................................................................................1-6
1.4 License Requirements ......................................................................................................................1-8
1.5 Regulatory Compliance ...................................................................................................................1-9
1.5.1 Non-TSO Functions ......................................................................................................................1-9
1.5.2 TSO Deviations ..........................................................................................................................1-10
1.5.3 FCC Grant of Equipment Authorization ....................................................................................1-10
1.6 GTR/GNC Database ......................................................................................................................1-11
1.7 Aviation Limited Warranty ............................................................................................................1-11
2 LIMITATIONS .................................................................................................................................2-1
2.1 Installation .......................................................................................................................................2-1
2.2 Aircraft Radio ..................................................................................................................................2-1
3 INSTALLATION OVERVIEW ......................................................................................................3-1
3.1 Introduction ......................................................................................................................................3-1
3.2 Antenna Considerations ...................................................................................................................3-1
3.2.1 COM Antenna Location ...............................................................................................................3-1
3.2.2 Interference of GPS ......................................................................................................................3-2
3.3 GTR/GNC Mounting Considerations ..............................................................................................3-2
3.4 Cabling and Wiring Considerations .................................................................................................3-3
3.5 Air Circulation and Cooling ............................................................................................................3-4
3.6 Compass Safe Distance ....................................................................................................................3-4
4 INSTALLATION PROCEDURES ..................................................................................................4-1
4.1 Unit and Accessories .......................................................................................................................4-1
4.2 Miscellaneous Options .....................................................................................................................4-1
4.3 Optional Reference Material ............................................................................................................4-2
4.4 Installation Materials Required but not Supplied ............................................................................4-2
4.4.1 Accessories Required but not Supplied ........................................................................................4-2
4.4.2 Materials Required but not Supplied (New Installations Only) ...................................................4-2
4.5 Special Tools Required ....................................................................................................................4-3
4.6 Coaxial Cable Installation ................................................................................................................4-4
4.7 Equipment Mounting .......................................................................................................................4-5
4.7.1 Rack Installation ...........................................................................................................................4-5
4.7.2 GTR/GNC Unit Insertion and Removal .......................................................................................4-6
4.7.3 Unit Replacement .........................................................................................................................4-6
4.8 Antenna Installation and Connections .............................................................................................4-6
4.8.1 COM Antenna ...............................................................................................................................4-6
5 CONNECTOR PINOUT INFORMATION ...................................................................................5-1
5.1 Pin Function List ..............................................................................................................................5-1