How many usable data bytes are sent in a DMX 512 universe?

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Multiple Choice

How many usable data bytes are sent in a DMX 512 universe?

Explanation:
DMX 512 defines a universe as 512 channels, and each channel is represented by one 8‑bit data value. That means there are 512 usable data bytes transmitted per universe. A start code byte appears before these data bytes to indicate the type of data, but it isn’t one of the channel data bytes. Break and mark-after-break are timing elements of the signal, not data bytes, so they don’t add to the data payload.

DMX 512 defines a universe as 512 channels, and each channel is represented by one 8‑bit data value. That means there are 512 usable data bytes transmitted per universe. A start code byte appears before these data bytes to indicate the type of data, but it isn’t one of the channel data bytes. Break and mark-after-break are timing elements of the signal, not data bytes, so they don’t add to the data payload.

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