TIC TR-220 - Regulatory Responsibilities

Rev E TR-220 90 008 088-1
1-2
measurements, the Test Set can be directly connected to the UUT without the use of additional
hardware.
For TIS testing, the Test Set transmits simulated Intruder Flight Data, which is then shown on the
TIS display to verify results.
The Test Set will receive and Decode 1090 MHz ADS-B data including squitter type, airborne
position, surface position, aircraft IDENT category, Airborne velocity, Latitude/Longitude,
North/South velocity, and East/West Velocity. The ADS-B TX function allows the operator to
receive, decode, and display ADS-B squitters. The ADS-B RX function permits the operator to
simulate a 1090MHz squitter. The TR-220 can be configured to transmit an airborne or surface
position squitter containing position, altitude, velocity, heading, aircraft category, flight ID, and
Mode S address.
The simulation of an intruder aircraft converging on the Aircraft Under Test (AUT) accomplishes
TCAS testing. The simulated target will be displayed on the TCAS display so the operator can
ensure proper advisories.
DME tests simulate an aircraft at a simulated speed converging to or from a selected distance. By
comparing the Test Set displayed distance to the DME under test display, the operator can
confirm proper DME operation.
1.3 Regulatory Responsibilities
Effective April 6, 1987, The Federal Aviation Administration (FAA) has required certain tests be
performed on transponders, both conventional ATCRBS and MODE S. In preparation for the
installation of new air traffic control radar facilities, the FAA required new measurements to be
performed on existing transponders and instituted required tests for MODE S transponders. FAR
(Federal Aviation Regulation) Part 43, Maintenance, Preventive Maintenance, Rebuilding and
Alteration section has been modified to reflect current technologies and improvements. Tel-
Instruments has met all FAA requirements and recommends that the user of this type of
equipment review the appropriate FAR or contact the manufacturer of their particular model of
transponder to ensure that the current procedures and limitations are being correctly adhered to.
Eurocontrol has also incorporated new regulations for Mode S Elementary and Enhanced
Surveillance. These requirements include Selective Identifiers for high-density traffic areas and
will become mandatory beginning in May of 2003 for Elementary Surveillance and March 2005 for
Enhanced Surveillance. The TR-220 Test Set has the capability to thoroughly test these new
functions to comply with upcoming requirements. If you would like further information regarding
these requirements, visit www.eurocontrol.int/
.