Garmin Bell 407 GTN User Manual

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

Contents

Garmin Bell 407 GTN User Manual Manual pdf 15 page image

RFMS, Bell 407 GTN GPS/SBAS System 190-01007-J4 Rev. 1Page 15 of 22SYSTEM DESCRIPTIONSPilot’s GuideThe Garmin GTN 6XX or GTN 7XX Pilot’s Guide, part number and revisionlisted below, contain additional information regarding GTN system description,control and function. The Pilot’s Guides do not need to be immediately availableto the flight crew. GTN 6XX Pilot’s Guide P/N 190-01004-03 Rev F or later GTN 7XX Pilot’s Guide P/N 190-01007-03 Rev F or laterPower Power to the GTN is provided through a circuit breaker labeled GPS orNAV/GPS. If more than one GPS or NAV is installed then the label willhave a 1 or 2 to designate the unit receiving power. Power to the optional GTN COM is provided through a circuit breakerlabeled COM. If more than one COM is installed then the label will alsohave a number to designate the unit receiving power. Power to the optional GMA 35 is provided through a circuit breaker labeledAUDIO.Lighting ControlsControl of the GTN backlight and bezel may be provided by either the built inphotocell or via the aircraft instrument dimmer switch. For this installationdimming of the GTN is controlled by: The GTN photocell. The aircraft instrument dimmer switch.If installed, the external HTAWS status annunciator is dimmed via a dedicatedHTAWS bright/dim switch. The HTAWS WARN/CAUTION annunciator canbe operated at two fixed brightness levels as controlled by the aircraftBRIGHT/DIM switch.GMA 35 Audio Panel (Optional)The GTN 725 and 750 can interface to a GMA 35 remotely mounted audiopanel and marker beacon receiver. Controls for listening to various radios,clearance playback control, and marker beacon are accessed by pressing the“Audio Panel” button on the GTN display screen. Volume controls for the audiopanel, telephone, and music are accessed by pressing the “Intercom” button onthe GTN display screen.If an optional GSR 56 is installed, when an incoming phone call is received it isnecessary to turn on the telephone audio to desired recipients. Press the“Intercom” button on the GTN display screen, press the “Telephone” button,and then press the buttons for those who will participate in the call. Telephonevolume can be adjusted using the controls on this page. Upon completion of thecall, turn off the telephone audio by pressing the “Intercom” button on the GTN