Garmin GTN 725, Installation Manual

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Page ii GTN 725/750 TSO Installation Manual
Rev. A 190-01007-02
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 GPS Specifications...............................................................................................................1-3
1.3.4 COM Specifications (GTN 750 Only) .................................................................................1-4
1.3.5 VOR Specifications (GTN 750 Only) ..................................................................................1-5
1.3.6 LOC Specifications (GTN 750 Only) ..................................................................................1-5
1.3.7 Glideslope Specifications (GTN 750 Only) .........................................................................1-6
1.3.8 GPS Antenna Requirements.................................................................................................1-7
1.4 License Requirements...............................................................................................................1-8
1.5 Regulatory Compliance ............................................................................................................1-9
1.5.1 TSO Authorization and Advisory Circular References........................................................1-9
1.5.2 TSO Deviations ..................................................................................................................1-11
1.5.3 FCC Grant of Equipment Authorization ............................................................................1-11
1.6 Database Options and Updates ...............................................................................................1-12
1.6.1 Navigation Database ..........................................................................................................1-12
1.6.2 TAWS/Terrain Database ....................................................................................................1-12
1.7 Fault Detection and Exclusion (FDE) ....................................................................................1-12
1.8 Limited Warranty ...................................................................................................................1-13
2. INSTALLATION OVERVIEW ......................................................................................................2-1
2.1 Introduction ..............................................................................................................................2-1
2.2 Minimum System Configuration ..............................................................................................2-1
2.2.1 VFR Installation ...................................................................................................................2-1
2.2.2 IFR GPS Installation ............................................................................................................2-1
2.2.3 IFR VOR/LOC/GLIDESLOPE Installation.........................................................................2-2
2.3 External Sensors .......................................................................................................................2-2
2.3.1 Multiple Uncorrected Pressure Altitude Sources .................................................................2-2
2.3.2 Multiple Baro-Corrected Altitude Sources...........................................................................2-3
2.3.3 Multiple Heading Sources....................................................................................................2-3
2.3.4 Multiple Indicated Airspeed Sources ...................................................................................2-4
2.3.5 Multiple True Airspeed Sources ..........................................................................................2-4
2.3.6 Multiple VLOC Course Select Sources ...............................................................................2-4
2.3.7 GPS Course Select Sources..................................................................................................2-5
2.3.8 Total Air Temperature Sources ............................................................................................2-5
2.3.9 Static Air Temperature Sources ...........................................................................................2-5
2.3.10 Joystick Waypoint Data .......................................................................................................2-6
2.4 Antenna Considerations............................................................................................................2-7
2.4.1 GPS Antenna Location.........................................................................................................2-7
2.4.2 COM Antenna Location .......................................................................................................2-8
2.4.3 VOR/LOC Antenna Location.............................................................................................2-10
2.4.4 Glideslope Antenna Location.............................................................................................2-10
2.4.5 Electrical Bonding..............................................................................................................2-10
2.4.6 Interference of GPS............................................................................................................2-10
2.5 Mounting Considerations .......................................................................................................2-11
2.6 Cabling and Wiring Considerations .......................................................................................2-11