Garmin GTN 6 series Maintenance Manual

Also see for GTN 725: User manual Maintenance manual Maintenance manual Activation Instructions User manual

Contents

Garmin GTN 6 series Maintenance Manual Manual pdf 13 page image

190-01007-B1 GTN 6XX/7XX Part 27 AML STC Maintenance ManualRev. 1 Page 2-12 SYSTEM DESCRIPTION2.1 Equipment DescriptionsThe GTN (Garmin Touch Navigation) WAAS navigators are a family of aviation panel mounted retrofitproducts. The following sections will describe the available functions for each unit in the GTN 6XX/7XXnavigators.2.1.1 GTN 6XXThe GTN 6XX WAAS navigators are a family of panel-mounted GPS/NAV/COM navigators.TheGTN 6XX units include the GTN 625, GTN 635, and GTN 650. They are 6.25 inches wide and 2.65inches tall. The GTN 6XX features a 600 by 266 pixel color LCD touchscreen. The GTN 625 is a GPS/SBAS unit that meets the requirements of Technical Standard Order TSO-C146c. The GTN 635 includesall of the features of the GTN 625 in addition to an airborne VHF communications transceiver. TheGTN 650 includes all of the features of the GTN 625 in addition to an airborne VHF communicationstransceiver and airborne VOR/localizer (LOC) and glideslope (G/S) receivers.2.1.2 GTN 7XXThe GTN 7XX WAAS navigators are a family of GPS/NAV/COM aviation panel-mounted products. TheGTN 7XX units include the GTN 725 and GTN 750. The GTN 7XX units are 6.25 inches wide and 6.00inches tall. They feature a 600 by 708 pixel color LCD touchscreen. The GTN 725 is a GPS/SBAS unitthat meets the requirements of Technical Standard Order TSO-C146c. The GTN 750 includes all of thefeatures of the GTN 725 in addition to an airborne VHF communications transceiver and airborne VOR/localizer (LOC) and glideslope (G/S) receivers. The GTN 725 and 750 also have the ability to remotelycontrol GMA 35 audio panel functions.2.1.3 GMA 35 Audio PanelThe GMA 35 audio panel is both a marker beacon receiver and an audio panel with 6-place intercom thatinterfaces to the communications and navigation radios, headsets, microphones, and speakers. The GMA 35 is remote-mounted and relies upon the GTN 725 or GTN 750 to control and display the audiofunctions.The GMA 35 interfaces to the GTN 7XX via RS-232 for control and display of audio panel functions.Additionally, the GMA 35 includes a six-position intercom system (ICS) with electronic cabin noise de-emphasis, two stereo music inputs, and independent pilot, copilot, and passenger volume controls. Theintercom provides three selectable isolation modes. A pilot-selectable cabin speaker output can be used tolisten to the selected rotorcraft radios or to broadcast PA announcements.2.1.4 NAV Antenna Cable SplitterThe navigation antenna cable splitter (Garmin P/N 013-00112-00) is used for installations involving dualVHF navigation capable GTNs or a single VHF navigation capable GTN installation with a second non-Garmin navigation unit.2.1.5 NAV Antenna Cable DiplexerThe GTN 650/750 navigation units have a single navigation antenna port and thus require a compositesignal for those installations which include separate VOR/LOC and G/S antennas. The navigation diplexer(Comant diplexer VOR/GS, Model CI-507) is used for these installations.