Technical Provisions for Mode S Services and Extended Squitter
Technical Provisions for Mode S Services and Extended Squitter
Technical Provisions for Mode S Services and Extended Squitter
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DRAFT - Working Paper ASP TSGWP11-01 <strong>for</strong> review by the TSG during the meeting in June 2011 in Paris<br />
Appendix A A-51<br />
Table A-2-16. BDS code 1,0 — Data link capability report (concluded)<br />
11) Bit 33 indicates the availability of Aircraft Identification data. It shall be set by the<br />
transponder if the data comes to the transponder through a separate interface <strong>and</strong><br />
not through the ADLP.<br />
12) The <strong>Mode</strong> S subnetwork version number shall be coded as follows:<br />
Version<br />
Number<br />
ICAO RTCA EUROCAE<br />
0 <strong>Mode</strong> S subnetwork not available<br />
1 ICAO Doc 9688 (1996)<br />
2 ICAO Doc 9688 (1998)<br />
3 ICAO Annex 10, Vol III, Amdt 77<br />
4 ICAO Doc 9871, Edition 1 DO-181D ED-73C<br />
5 ICAO Doc 9871, Edition 2 DO-181E ED-73E<br />
6 - 127 Reserved<br />
13) Uplink ELM average throughput capability shall be coded as follows:<br />
0 = No UELM Capability<br />
1 = 16 UELM segments in 1 second<br />
2 = 16 UELM segments in 500 ms<br />
3 = 16 UELM segments in 250 ms<br />
4 = 16 UELM segments in 125 ms<br />
5 = 16 UELM segments in 60 ms<br />
6 = 16 UELM segments in 30 ms<br />
7 = Reserved<br />
14) Downlink ELM throughput capability shall be coded as follows:<br />
0 = No DELM Capability<br />
1 = One 4 segment DELM every second<br />
2 = One 8 segment DELM every second<br />
3 = One 16 segment DELM every second<br />
4 = One 16 segment DELM every 500 ms<br />
5 = One 16 segment DELM every 250 ms<br />
6 = One 16 segment DELM every 125 ms<br />
7-15 = Reserved<br />
15) Bit 16 shall be set to ONE (1) to indicate that ACAS is operational <strong>and</strong> set to<br />
ZERO (0) to indicate that ACAS has failed or is on st<strong>and</strong>by.<br />
16) Bit 37 shall be set to ONE (1) to indicate the capability of hybrid surveillance,<br />
<strong>and</strong> set to ZERO (0) to indicate that there is no hybrid surveillance capability.<br />
Draft<br />
17) Bit 38 shall be set to ONE (1) to indicate that the ACAS is generating both TAs<br />
<strong>and</strong> RAs, <strong>and</strong> set to ZERO (0) to indicate the generation of TAs only.<br />
18)<br />
Bit 40 Bit 39 Applicable MOPS Documents<br />
0 0 RTCA DO-185 (see note 1)<br />
0 1 RTCA DO-185A (see note 1)<br />
1 0 RTCA DO-185B<br />
1<br />
Notes.–<br />
1 Reserved <strong>for</strong> future versions<br />
1. RTCA DO-185 equipment is also referenced as TCAS logic version 6.04A.<br />
Equipment compliant to DO-185A, or later versions, are SARPs compliant.<br />
2. Future versions of ACAS will be identified using Part Numbers <strong>and</strong> Software<br />
Version Numbers specified in Registers E516 <strong>and</strong> E616.<br />
19) The Overlay Comm<strong>and</strong> Capability (OCC) in Bit 15 shall be interpreted as follows:<br />
0 = No Overlay Comm<strong>and</strong> Capability<br />
1 = Overlay Comm<strong>and</strong> Capability<br />
Note.– Additional implementation guidelines are provided in §D.2.4.1.<br />
DRAFT - Working Paper ASP TSGWP11-01 <strong>for</strong> review by the TSG during the meeting in June 2011 in Paris