Installation Instructions

GTN 6XX/7XX AML STC Installation Manual 190-01007-A3
Page iv Rev. 4
2.4.5 Electrical Bonding ................................................................................................................ 2-23
2.4.6 Placards and Labels .............................................................................................................. 2-25
2.4.7 Power Distribution ............................................................................................................... 2-25
2.4.8 Optional Switch Installation ................................................................................................. 2-27
2.4.9 External Annunciators .......................................................................................................... 2-28
2.4.10 Unit Mounting Considerations ............................................................................................. 2-28
2.4.11 Cable and Wiring Considerations ......................................................................................... 2-35
2.4.12 Audio Electrical Noise ......................................................................................................... 2-37
2.4.13 Transmit interlock and Split COM Operation ...................................................................... 2-37
2.4.14 GMA 35 Wiring Considerations for Failsafe Operation ...................................................... 2-38
2.4.15 Magnetic Compass Recalibration ......................................................................................... 2-38
2.4.16 Weather Radar Wiring Considerations ................................................................................. 2-38
3 INSTALLATION PROCEDURE....................................................................................... 3-1
3.1 O
PTIONAL ACCESSORIES .............................................................................................................. 3-1
3.1.1 GPS/WAAS Antenna Options ................................................................................................ 3-1
3.1.2 GPS Antenna Doubler ............................................................................................................ 3-2
3.2 M
ISCELLANEOUS OPTIONS ........................................................................................................... 3-2
3.3
ANTENNA INSTALLATION AND CONNECTIONS ............................................................................. 3-3
3.3.1 GPS/WAAS Antenna ............................................................................................................. 3-3
3.3.2 COM Antenna Cable Considerations ..................................................................................... 3-7
3.3.3 NAV Antenna ......................................................................................................................... 3-8
3.4 GTN/GMA
35 LOCATION AND MOUNTING ................................................................................ 3-10
3.4.1 GTN Rack Installation .......................................................................................................... 3-10
3.4.2 GTN Unit Insertion and Removal ........................................................................................ 3-10
3.4.3 GMA 35 Rack Installation ................................................................................................... 3-11
3.4.4 GMA 35 Unit Insertion and Removal .................................................................................. 3-11
3.5 W
EIGHT AND BALANCE .............................................................................................................. 3-11
3.6 E
LECTRICAL INSTALLATION PROCEDURE .................................................................................. 3-13
3.6.1 Special Tools Required ........................................................................................................ 3-13
3.6.2 Wire Harness Buildup .......................................................................................................... 3-13
3.6.3 Backshell Assembly and D-Subminiature Connectors ......................................................... 3-15
3.6.4 GTN Fan Installation ............................................................................................................ 3-27
3.6.5 TVS, Fuse and Resistor Installation (nonmetallic aircraft only) .......................................... 3-29
3.6.6 Coaxial Cable Termination .................................................................................................. 3-32
3.6.7 Marker Beacon Antenna Cable Termination ........................................................................ 3-33
3.6.8 Instrument Panel Bonding Procedure ................................................................................... 3-34
3.7 E
LECTRICAL LOAD ANALYSIS .................................................................................................... 3-36
3.7.1 Aircraft with Existing Electrical Load Analysis .................................................................. 3-36
3.7.2 Aircraft without Existing Electrical Load Analysis ............................................................. 3-37
3.7.3 Performing an Electrical Load Analysis by Measurement ................................................... 3-38
3.8 AFMS
COMPLETION ................................................................................................................... 3-46
3.8.1 System Capabilities .............................................................................................................. 3-46
3.8.2 Autopilot Listed in GTN 6XX/7XX AML STC ................................................................... 3-47
3.8.3 Autopilot Not Listed in GTN 6XX/7XX AML STC ............................................................ 3-48
4 CONNECTOR PINOUT INFORMATION ...................................................................... 4-1
4.1 GTN 6XX/7XX ............................................................................................................................ 4-1