Equipment Descriptions; Gtn 6Xx; Gtn 7Xx; Gma 35/35C Audio Panel - Garmin GTN 6 Series Maintenance Manual

2.1 Equipment Descriptions

The GTN WAAS navigators are a family of aviation panel-mounted products. The following sections will
describe the available functions for each unit in the GTN 6XX/7XX navigators.
2.1.1

GTN 6XX

The GTN 6XX WAAS navigators are a family of panel-mounted GPS/NAV/COM navigators.GTN 6XX
units include the GTN 625, GTN 635, and GTN 650. GTN 6XX units are 6.25 inches wide and 2.65 inches
tall. The GTN 6XX features a 600 × 266 pixel color LCD touchscreen. The GTN 625 is a GPS/SBAS unit
that meets the requirements of TSO-C146c. The GTN 635 includes all of the features of the GTN 625 in
addition to an airborne VHF communications transceiver. The GTN 650 includes all of the features of the
GTN 625 in addition to an airborne VHF communications transceiver and airborne VOR/LOC and G/S
receivers.
2.1.2

GTN 7XX

The GTN 7XX WAAS navigators are a family of GPS/NAV/COM aviation panel-mounted products.
GTN 7XX units include the GTN 725 and GTN 750. GTN 7XX units are 6.25 inches wide and 6.00 inches
tall. They feature a 600 × 708 pixel color LCD touchscreen. The GTN 725 is a GPS/SBAS unit that meets
the requirements of TSO-C146c. The GTN 750 includes all of the features of the GTN 725 in addition to
an airborne VHF communications transceiver and airborne
VOR/LOC and GS receivers. The GTN 725 and 750 also have the ability to remotely control GMA 35
audio panel functions.
2.1.3

GMA 35/35c Audio Panel

The GMA 35 Audio Panel is both a marker beacon receiver and an audio panel with a 6-place intercom
that interfaces 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 audio
functions. The GMA 35c provides the functionality of the GMA 35 with the added capability to pair
Bluetooth™ audio sources. This enables the distribution of audio to ICS positions when using a
compatible device. The GMA 35c supports up to ten stored devices and one active Bluetooth device.
The GMA 35 interfaces to the GTN 7XX via RS-232 for control and display of audio panel functions. The
GMA 35 includes a six-position ICS with electronic cabin noise de-emphasis, two stereo music inputs, and
independent pilot/co-pilot/passenger volume controls. The intercom provides three selectable isolation
modes. A pilot-selectable cabin speaker output is used to listen to the selected rotorcraft radios or to
broadcast PA announcements.
2.1.4

Flight Stream 510

NOTE
The Flight Stream 510 is a wireless-enabled data card that is inserted into the GTN data
card slot.
The Flight Stream 510 interfaces to the GTN 6XX/7XX by replacing the front-loaded data card to allow
wireless database synchronization with PEDs. Synchronized information is then disseminated to various
LRUs through their existing GTN interface connections.
190-01007-B1
Rev. 4
GTN 6XX/7XX Part 27 AML STC Maintenance Manual
Page 2-2