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ARINC 429 is both an electrical bus standard and a data transfer standard for aircraft avionics.

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How are the BNR and BCD data formats identified in an ARINC-429 message?

I'm a newbie in ARINC-429 standard. How does the receiver identify which data is in BCD format and which is BNR? I understand that labels indicate the message data carried information, but it does not …
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