User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL
T
3
CAS/Part No.9005000
● 0,8 Aircraft ID and Category
● 0,9 Airborne Velocity
NOTE:
1090 ES ADS-B BDS data is transmitted in the ME field of
DF=17.
BDS registers currently specific to Elementary Surveillance (ELS) are:
● 1,0 Data Link Capability
● 1,7 Common Usage GICB Capability
● 2,0 Aircraft Identification
● 3,0 ACAS Active Resolution Advisory
NOTE: ELS BDS data is transmitted in the MB field of DF=20 or DF=21.
BDS registers currently specific to Enhanced Surveillance (EHS) are:
● 4,0 Selected Vertical Intent
● 5,0 Track and Turn
● 6,0 Heading and Speed
NOTE:
EHS BDS data is transmitted in the MB field of DF=20 or
DF=21.
b) Detailed BDS Register Descriptions
This section provides a detailed description of the BDS register data
currently specific to 1090 ES ADS-B, ELS, and EHS. The first column in
each of the BDS register tables that follow provides the number of bits
allocated for each parameter listed that is listed in the second column.
The third column provides typical transponder ramp tester parameter
data. The fourth and last column provides the external sources and
details that are required by the transponder to effectively assemble each
parameter into the BDS register.
Refer to ICAO Annex 10, Vol III, Part 1, Chapter 5 and RTCA DO 260 for
more details.
Pub. No. 8600200-001, Revision 004
34-45-29
1-122
04 Nov 2014
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