Garmin AT Inc. AT7000 Manual De Usuario

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Installation Manual
System Description
560-0405-00 Rev –
December 14, 2001
Page 5
© 2001 by UPS Aviation Technologies Inc.
Section 2 -  Transponder Description
2.1  General
This section defines the system functionality for the AT7000 Mode S transponder.  It is a
Level 2es transponder indicating that it performs basic Mode S functions, and is also ca-
pable of transmitting extended squitters with encoded aircraft information to support
ADS-B functions.  The unit is also upgradeable to ICAO Level 5 (Downlinked Aircraft
Parameters, (DAPS)) capability through software upgrades.
2.2  Overview
The AT7000 transponder is a full-featured Mode S transponder in an ARINC 600 form
factor that has been designed with a built-in capability for future growth.  This trans-
ponder is compatible with Change 7 TCAS systems, as well as UPS AT ADS-B systems.
When utilized with a UPS AT Link and Display Processing Unit (LDPU), the unit serves
as an integral part of a complete ADS-B system.  ADS-B is currently certified for use as a
traffic surveillance system.
The AT7000 responds to both the Air Traffic Control Radar Beacon System (ATCRBS),
and Mode S (Mode Select) interrogations.  The AT7000 meets all requirements described
in DO-181B and EUROCAE ED-73A.  This also meets Eurocae elementary surveillance
requirements including SI capability (six bit Mode S sensor interrogator codes) and flight
ID transmission. Flight ID (FID) may be input to the AT7000 for extended squitter
transmission by either external serial data interface or by using a Gables transponder
control panel capable of accepting and transmitting FID information.
TCAS is fully supported with antenna diversity (top and bottom) antenna ports.  The
AT7000 is designed to operate with all ARINC 718/735 and conforming TCAS II com-
puters.
To provide maximum reliability, the unit has extensive built in test and evaluation (BITE)
capabilities.  This is further augmented by a LCD display on the front panel allowing for
display of descriptive messages allowing for far greater comprehensive testing and trou-
bleshooting capabilities on aircraft.
Software on board the AT7000 is certified to DO-178B Level B.  Software updates can
be completed via an RS232 serial data and will be upgraded to interface with an ARINC
615 data loader.  The data loader port is located on the front panel of the unit.