How many labels are defined in ARINC 429 for calibrated altitude?
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$\begingroup$ What Equipment ID are you interested in? $\endgroup$– selectstriker2May 6, 2019 at 13:20
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$\begingroup$ I dont know it................. $\endgroup$– Leo Anggara KrisnaMay 6, 2019 at 15:08
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$\begingroup$ Are you trying to decode an ARINC label or figure out what label to send the data as or something else? By "calibrated" to mean baro corrected? $\endgroup$– selectstriker2May 6, 2019 at 15:21
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$\begingroup$ I find out what is the Arinc label for calibrated alt data? $\endgroup$– Leo Anggara KrisnaMay 6, 2019 at 15:36
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$\begingroup$ In my copy of ARINC 429 (2004), there is no label defined for "calibrated altitude". There are labels defined for [Pressure] Altitude (1013.2 mbar) and Baro Corrected Altitude. What exactly are you trying to indicate? $\endgroup$– selectstriker2May 6, 2019 at 17:52
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2 Answers
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There is no defined "calibrated altitude". The following are all altitude related labels:
102 Selected Altitude,
107 Selected Cruise Altitude,
- 120 Range to Altitude,
- 127 Selected Landing Altitude,
- 131 Intruder Altitude,
- 144 Altitude Error,
- 153 Max Altitude,
- 162 Density Altitude,
- 164 Min Descent Altitude (MDA),
- 203 Altitude,
- 204 Baro Corrected Altitude #1 & Baro Altitude,
- 206 Altitude (Variable Resolution),
- 212 Altitude Rate,
- 220 Baro Corrected Altitude #2,
- 225 Compensated Altitude Rate,
- 251 Baro Corrected Altitude #3,
- 252 Baro Corrected Altitude #4,
- 254 Altitude Rate,
- 323 Geometric Altitude,
- 361 Altitude (Inertial)
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In ARINC 429 a label refers to a parameter, for instance AOA (angle of attack). When you have several sensors for the same parameter, the same label is used for all sensors but 2 additional digits (SDI, Source Destination Identifier) are used to distinguish them, for instance left AOA and right AOA.
As a summary, a parameter can't use several labels but the same label might refer to similar parameters from different sources or sensors.
