Garmin GTX 330 Installation Manual page 13

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Aircraft master switch turn-on option.
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Serial altitude or GPS groundspeed input.
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Serial altitude input. (Reduces wire count vs. parallel wire gray code altimeter interface.)
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Software update input.
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Supports Comm-A and Comm-B protocol.
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Temperature, Altitude Hold and Density Altitude.
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Digitally recorded voice and discrete warning annunciator activated by Altitude Hold when limits are
exceeded.
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Diversity: GTX 330 is available with or without the diversity feature.
The GTX 330 supports the following list of Binary Data Selector (BDS) registers:
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BDS (0,0) Air Initiated Comm-B (AICB)
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BDS (1,0) Data Link Capability Report
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BDS (1,7) Common Usage Ground Initiated Comm-B (GICB) Capability Report
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BDS (1,8) Mode S Specific Services GICB Capability Report
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BDS (1,9) Mode S Specific Services GICB Capability Report
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BDS (1,D) Mode S Specific Services Protocols (MSP) Capability Report
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BDS (2,0) Aircraft Identification
BDS register information is presented for the installation agency to understand the functionality of the GTX 330,
and make a determination that the unit complies with the requirements of their civil aviation authorities. No
further wiring or configuration programming is required for the unit.
Note that BDS (3,0) is only required for transponders compatible with ACAS/TCAS II. The GTX 330 does not
support BDS (3,0).
GTX 330 Installation Manual
190-00207-02
Page 1-3
Rev E