Garmin GTS 825 Pilots Guide - Page 23

Glossary AGL: Active Target: ADS-B: ATCRBS: CLEAR CAS: CPA: GPS: LRU: MHz: Mode A: Mode C: Mode S: NTA: NM: PA: Target: TA: TAS: TCAS: Above Ground level Any intruder tracked by the appliance using active interrogations Automatic Dependent Surveillance - Broadcast Air Traffic Control Radio Beacon Service- A secondary surveillance radar system having ground-based interrogators and airborne transponders capable of operation on Modes A and C Correlated Location Enhanced ADS-B Receiver Collision Avoidance System Closest Point Approach Global Positioning System Line Replaceable Unit Mega Hertz A type of ATCRBS transmission which requests (via Mode A interrogations) or reports (via Mode A replies) aircraft identity information A type of ATCRBS transmission which requests (via Mode C interrogations) or reports (via Mode C replies) aircraft altitude information A type of secondary surveillance radar transmission which contains a unique 24-bit discrete address, thus allowing interrogations to be addressed to individual aircraft. Mode S transmissions can be short (56 bits) or long (112 bits), with long transmissions containing a 56-bit "message" field. Number of TCAS equipped targets Nautical Mile Proximate Advisory Any intruder tracked by the appliance Traffic Advisory Traffic Advisory System Traffic Alert and Collision Avoidance System 190-00587-02 Rev. A Garmin GTS 8XX Series Traffic Advisory System 19