Garmin GMX 200 Pilot's Manual & Reference

Also see for GMX 200: Pilot's guide Reference guide Installation Pilot's Guide & Reference Specification

Contents

37Detailed OperationADS-B TrafficA small up or down arrow next to the identifierindicates that the traffic is climbing or descendingat a rate of at least 500 feet per minute. The end ofthe vector line that extends beyond the point of thetraffic arrow indicates where it will be at the end ofthe selected time interval. The currently selected timeinterval is indicated in the upper left corner of thedisplay.Selected ADS-B Target Information DetailTIS-B TrafficTraffic Information Service – Broadcast (TIS-B) issupported by displaying non ADS-B equipped aircraftthat are received over the UAT data link radio. NonADS-B equipped aircraft that are detected by ground-based radar can be up-linked to all aircraft in the areathat are UAT data link equipped and within the GBTservice volume.As TIS target location is determined by groundbased radar, coverage, range and target positionalaccuracy are highly dependent on relative location tothe actual radar site.Traffic Information Services-Broadcast (TIS-B) isthe broadcast of traffic information to ADS-B equippedaircraft from ADS-B ground stations. The source ofthis traffic information is derived from ground-basedair traffic surveillance sensors, typically radar. TIS-Bis intended to provide ADS-B equipped aircraft witha more complete traffic picture in situations wherenot all nearby aircraft are equipped with ADS-B. Theadvisory-only application enhances a pilot’s visualacquisition of other traffic. TIS-B service is becomingavailable in selected locations where there are bothadequate surveillance coverage from ground sen-sors and adequate broadcast coverage from GroundBased Transceivers (GBTs). The quality level of trafficinformation provided by TIS-B is dependent upon thenumber and type of ground sensors available as TIS-Bsources and the timeliness of the reported data.In order to receive TIS-B services, the followingconditions must exist:1. The host aircraft must be equipped with a UATADS-B transmitter / receiver or transceiver. Asthe ground system evolves, the ADS-B data linkmay be either UAT or 1090 ES, or both.2. The host aircraft must fly within the coveragevolume of a compatible GBT that is configuredfor TIS-B uplinks. (Not all GBTs provide TIS-Bdue to a lack of radar coverage or because aradar feed is not available).3. The target aircraft must be within the coverageof, and detected by, at least one of the ATCradars serving the GBT in use.Only transponder-equipped targets (i.e., Mode A/Cor Mode S transponders) are detected. Current radarsiting may result in limited radar surveillance coverageat lower altitudes near some general aviation airports,with subsequently limited TIS-B Service volume cover-age. If there is no radar coverage in a given area, thenthere will be no TIS-B coverage in that area.