User's Manual

TT21/TT22 Transponder Installation Manual 13 July 2009
00560-00 Issue AF
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Page 48 Trig Avionics Limited
12. ADS-B Compliance
TT21/TT22 transponders include support for Extended Squitter ADS-B out.
The TT21/TT22 is a DO-260A change 2 compliant class B0 broadcast-only
participant.
12.1 ADS-B Parameters Supported
The following table lists the ADS-B parameters that are transmitted by the
TT21 transponder when connected to an appropriate GPS receiver.
Parameter
BDS Register
SPI
0,5
Emergency Indicator
0,5
Barometric Altitude
0,5
Quality Indicator (NIC)
0,5
Airborne Position
Latitude
0,5
Longitude
0,5
Quality Indicator (NIC)
0,6
Surface Position
Latitude
0,6
Longitude
0,6
Surface Ground Speed
0,6
Surface Ground Track
0,6
Aircraft Identification
0,8
Airborne Ground Velocity
0,9
Emergency Status
6,1
Quality Indicator (NACp)
6,5