Garmin GTX 330 GPS Receiver User Manual


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Part One: Section 1
Part One:
Traffic Information Service
(TIS) Interface
Section 1: TIS Operation and
Symbology
TIS Operation
NOTE: Part One of this Addendum assumes the user
has experience operating the 400W/500W Series units
and the Garmin GTX 330 Transponder.
The Traffic Information Service (TIS) provides
a graphic display of traffic advisory information in
thecockpitfornon-TCAS(TrafcalertandCollision
Avoidance System) equipped aircraft. TIS is a ground-
basedserviceprovidingrelativelocationofallATCRBS
(AirTrafcControlRadarBeaconSystem)ModeA
and Mode C transponder-equipped aircraft within a
specified service volume. The TIS ground sensor uses
real-timetrackreportstogeneratetrafcnotication.
TIS Traffic display is available to aircraft equipped
withaModeSDataLinksuchastheGarminGTX330
Transponder.TISTrafcfromaGTX330Transpon-
dercanthenbedisplayedonaGarmin400W/500W
Series unit. Surveillance data includes all transponder-
equipped aircraft within the coverage volume. Aircraft
without an operating transponder are invisible to TIS.
TIS displays up to eight traffic targets within seven
nautical mileshorizontallyfrom3000feetbelowto
3500feetabovethe requesting aircraft.
The TIS is a ground-based service that displays
nearbyaircraftonyour400W/500W-seriesdisplay.
FortheTISfeaturetoinformyouofanearbyaircraft’s
presence, several conditions must be met:
• YouraircraftmustbeequippedwithaModeS
datalinktransponder,suchastheGTX330.
• YoumustbewithinrangeofaModeSradar
that provides the TIS service. Not all Mode S
ground radars provide TIS service.
• The“intruder”aircraftmustbeequippedwith
a transponder, and that transponder must be
turned on. Aircraft that are not equipped with
operating transponders will not be visible to the
Mode S surveillance radar.
• The“intruder”aircraftmustbewithintheTIS
coverage volume for your aircraft. TIS displays
up to eight traffic targets within seven nautical
mileshorizontallyfromtherequestingaircraft,
andfrom3,000feetbelowto3,500feetabove
the requesting aircraft.
• Bothyouraircraftandtheintruderaircraftmust
be visible to the Mode S surveillance radar on
the ground.
Always remember that TIS cannot alert you to
the presence of aircraft that are not equipped with
transponders, nor can it alert you to aircraft that may
be nearby, but obscured from the ground surveillance
radar by intervening terrain.
TIS Coverage Volume (not to scale)
7.0 nm
3,500 ft
3,000 ft
TIS Operation and Symbology
190-00356-30 Rev F
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