Traffic Information Service
The GTX 330 Mode S transponder provides a data link for Traffic Information Service
(TIS). TIS is derived through a Mode S transponder data link and viewed on a multifunction
display. ATC radar sends a traffic picture within a radius of 55 miles from select sites. The
TIS protected area is a cylinder of 7-mile radius, extending 3500' above and 3000' below the
aircraft. Refer to the AIM Chapter 1 for more details.
TIS provides a graphic display of traffic information in the cockpit for non-TCAS equipped
aircraft. Transponder-equipped aircraft can be displayed within the coverage volume within
range of your position on indicators such as a Garmin GNS 430 or GNS 530, GTN 6XX/7XX,
GNS 480, and GMX 200. Aircraft without an operating transponder are invisible to TIS. Refer
to 400/500 series, GTN 6XX/7XX, GNS 480, or GMX 200 pilot literature for details.
GTX 330 ES Options
Automatic Dependent Surveillance-Broadcast (ADS-B) technology improves situational
awareness and flight safety. With ADS-B capabilities, position, velocity, and heading
information are automatically transmitted to other aircraft and ground stations. The current
air traffic control system depends on a transponder request for pertinent aircraft information
and does not include 3D position. ADS-B provides automatic transmission of aircraft
information without a request.
NOTE: The GTX 330 with software version 8.01 or later, has been shown
to comply with TSO-C166b and AC 20-165 and is eligible for use as an
ADS-B out Transmitter meeting the requirements of 14 CFR 91.225 and
91.227 when installed in accordance with Garmin's installation instructions.
Refer to the AFMS for more information on your installation and whether
it is ADS-B version 2 compliant.
Audio Alerts
When connected to the aircraft audio system, the GTX 330 will emit important voice alerts
at relevant times. The alerts the GTX 330 will emit are:
• "Leaving Altitude" - Altitude Monitor deviation is exceeded.
• "Traffic" - TIS traffic alert is received.
• "Traffic Not Available" - TIS service is not available or out of range.
• "Timer Expired" - Count down time has expired.
To change the volume of the alerts, and toggle between male voice, female voice, or tone
alerts, refer to the installation guide.
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