Garmin GTX 33 Installation Manual - Page 12
Interface Summary, BDS 1, D Mode S Specific Services Protocols MSP Capability Report. - transponder
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1.6 Interface Summary The GTX 33 provides the following interface connections via the rear connector. See Section 4 and Appendix D for connection details. • Ten (10) encoding altimeter inputs • External IDENT input • External STBY input (useful for dual transponder installations) • External suppression pulse input • Switched power output of up to 1.5 amps (for digital altitude encoder power) • Aircraft power input (14/28 Vdc) • Remote power turn on • Serial airdata or GPS groundspeed input • Serial altitude input (Reduces wire count vs. parallel wire gray code altimeter interface.) • Software update input • Supports Comm-A and Comm-B protocol • Temperature, Altitude Hold and Density Altitude • Digitally recorded voice and discrete warning annunciator activated by Altitude Hold when limits are exceeded • Diversity: GTX 33D is available with the diversity feature • ARINC 429 input The GTX 33 P/N 010-00267-() and GTX 33D 010-00294-() support the following list of Comm-B Definition Subfield (BDS) registers: • BDS (0,0) Air Initiated Comm-B (AICB). • BDS (1,0) Data Link Capability Report. • BDS (1,7) Common Usage Ground Initiated Comm-B (GICB) Capability Report. • BDS (1,8) Mode S Specific Services GICB Capability Report. • BDS (1,9) Mode S Specific Services GICB Capability Report. • BDS (1,D) Mode S Specific Services Protocols (MSP) Capability Report. • BDS (2,0) Aircraft Identification. • BDS (4,0) Selected Vertical Intention • BDS (5,0) Track and Turn Report • BDS (6,0) Heading and Speed Report • BDS (0,6) Extended Squitter surface Position • BDS (0,5) Extended Squitter Airborne Position • BDS (0,8) Extended Squitter Aircraft Identification and Category • BDS (0,9) Extended Squitter Airborne Velocity - Subtypes 1 and 3 • BDS (0,A) Extended Squitter Event Driven Data • BDS (6,1) Emergency/Priority Status • BDS (6,5) Aircraft operational Status GTX 33 Installation Manual Page 1-4 190-00906-00 Rev. F