Garmin GPS 400W Installation Manual page 8

2.6 Cabling and Wiring Considerations.............................................................................................. 2-8
2.7 Air Circulation and Cooling ......................................................................................................... 2-8
2.8 Compass Safe Distance ................................................................................................................. 2-9
3 INSTALLATION PROCEDURES ............................................................................................... 3-1
3.1 Unit and Accessories .................................................................................................................... 3-1
3.2 Optional Accessories .................................................................................................................... 3-2
3.2.1 GPS Antenna Options ........................................................................................................... 3-2
3.2.2 Other Accessories ................................................................................................................. 3-2
3.2.3 Enable Cards ......................................................................................................................... 3-3
3.3 Database Options .......................................................................................................................... 3-3
3.4 Miscellaneous Options ................................................................................................................. 3-3
3.5 Optional Reference Material ........................................................................................................ 3-3
3.6 Installation Materials Required but Not Provided ........................................................................ 3-4
3.6.1 Optional Accessories Not Supplied (GNC 420W and GNS 430W Only) ........................... 3-4
3.6.2 Materials Required But Not Supplied (New Installations Only) ......................................... 3-4
3.7 Special Tools Required ................................................................................................................. 3-5
3.8 Cable Installation .......................................................................................................................... 3-6
3.9 Equipment Mounting .................................................................................................................... 3-7
3.9.1 Rack Installation ................................................................................................................... 3-7
3.9.2 400W Series Unit Insertion and Removal ............................................................................ 3-7
3.9.3 Unit Replacement ................................................................................................................. 3-7
3.10 Antenna Installation and Connections .......................................................................................... 3-8
3.10.1 GPS Antenna ........................................................................................................................ 3-8
3.10.2 COM Antenna ....................................................................................................................... 3-9
3.10.3 NAV Antenna ....................................................................................................................... 3-9
4 SYSTEM INTERCONNECTS ..................................................................................................... 4-1
4.1 Pin Function List........................................................................................................................... 4-1
4.1.1 P4001 Main Connector ......................................................................................................... 4-1
4.1.2 P4002 COM Connector (GNC 420W and GNS 430W Only) .............................................. 4-3
4.1.3 P4006 NAV Connector (GNS 430W Only) ......................................................................... 4-4
4.2 Power, Lighting, and Antennas..................................................................................................... 4-5
4.2.1 Power .................................................................................................................................... 4-5
4.2.2 Lighting Bus ......................................................................................................................... 4-5
4.2.3 Antennas ............................................................................................................................... 4-5
4.3 Altitude Gray Code ....................................................................................................................... 4-6
4.4 Main Indicator .............................................................................................................................. 4-7
4.4.1 Main Indicator Function ....................................................................................................... 4-7
4.4.2 Main Indicator Electrical Characteristics ............................................................................. 4-7
4.4.3 Main Indicator Configuration ............................................................................................... 4-8
4.4.4 Main Indicator Calibration and Checkout ............................................................................ 4-8
4.4.5 Main Indicator Interconnect ................................................................................................. 4-8
4.5 Annunciators/Switches ................................................................................................................. 4-9
4.5.1 Annunciators/Switches Function .......................................................................................... 4-9
4.5.2 Annunciators/Switches Electrical Characteristics .............................................................. 4-11
4.5.3 Annunciators/Switches Configuration................................................................................ 4-11
4.5.4 Annunciators/Switches Calibration and Checkout ............................................................. 4-11
Page iv
Rev. G
GNS 400W Series Installation Manual
190-00356-08