Garmin GMX 200 Installation Manual

Also see for GMX 200: Pilot's guide Reference guide Installation Pilot's Guide & Reference Specification

Contents

GMX 200 Installation Manual Page 2-3190-00607-04 Revision F2.4.2.2 9 0 B Altitude SourceThe GMX 200 uses altitude for its terrain awareness function and for calculating absolute altitudes fortraffic. Only one type of altitude (GPS or pressure) can be configured for use by the GMX 200. Anexternal altitude source (either GPS or pressure) is required if any of the following features is configured:• The GMX 200 internal terrain awareness function is used (i.e. an external TAWS source is notconfigured)• An Avidyne/Ryan TCAD is configured as the traffic source (altitude is only used to calculate theabsolute altitude for traffic).2.4.2.2.1 1 1 2 B GPS AltitudeIf the Altitude Type is set to GPS, the GMX 200 uses GPS Altitude for all of its calculations (if pressurealtitude is also available to the GMX 200, pressure altitude will not be used). If a GDL 90 is connected,the GMX 200 will use the GPS Altitude from the GDL 90 as a second altitude source, and the altitudesource with the highest integrity will be used for all calculations.2.4.2.2.2 1 1 3 B Pressure AltitudeIf the Altitude Type is set to Pressure, the GMX 200 uses Pressure Altitude for all of its calculations (ifGPS Altitude is also available to the GMX 200, GPS altitude will not be used).2.4.3 5 1 B Mounting ConsiderationsThe GMX 200 is designed to mount in the avionics stack in the aircraft instrument panel within view andreach of the pilot. The GMX 200 must be located where the operator will have easy access to the controlsand adequate viewing of the display meeting the installation limitations in section X 7.2X. The preferredlocation would minimize pilot head movement when transitioning between looking outside of the flightdeck and viewing and operating the GMX 200. Reference X Figure D-4X . A sample diagram of a typicalcockpit front panel view of the GMX 200 is shown in X Figure D-2.X The GMX 200 should be placed ashigh as possible in the radio stack to minimize the shifting of colors on the display. The audio panelshould be the only equipment above the GMX 200.The standard package includes a mounting tube for ease of mounting, connections, and service of the unit.Allow an additional 2” clearance to the rear of the mounting tube for routing cables. Mounting tubedetails are shown in X Figure D-5X and X Figure D-6X .2.4.4 5 2 B Cable and Wiring ConsiderationsWiring should be installed in accordance with AC 43.13-1B Chapter 11. When wire separation cannot beachieved, the following issues should be addressed:• The cable harness should not be located near flight control cables and control, high electricalcapacity lines or fuel lines• The cable harness should be located in a protected area of the aircraft• Do not route cable near high-energy sources2.4.5 5 3 B Air Circulation and CoolingThe GMX 200 does not required external cooling, but mounting configuration should not restrict intakeairflow into the duct above the I/O D-sub connector or exhaust airflow out of the exhaust fans. ReferenceXFigure D-6X for exhaust fan and air duct locations.2.4.6 5 4 B Compass Safe DistanceAfter reconfiguring the avionics in the cockpit panel, if the GMX 200 is mounted less than six inchesfrom the compass, recalibrate the compass and make the necessary changes for noting correction data.