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TCAS test equipment performs functions such as testing the entire TCAS antenna S-Parameters and permitting complete evaluation of the antennas in the field. They allow verification and certification of an aircraft`s TCAS installation, performing many of the required tests for Supplemental Type Certification (STC) during initial installation and subsequent routine maintenance. They also have the capability to monitor TCAS interrogations (displaying decoded information/communication data) and generating ATCRBS or Mode S replies that simulate threat aircraft for bearing accuracy checks.
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