Question

What is the stated advantage of the Manchester coding used in KNX RF?

KNX BasicLearnKNX RFMedium
Answer

B — Increased transmission reliability, with an edge transition in the centre of each bit

Correct: the source names increased transmission reliability, thanks to the mid-bit 0/1 transition that keeps clocks synchronised.

Source

KNX Basic Course Documentation — 3.1 — p. 142

All proposed choices (exam context)
  1. A.A larger available frequency band
  2. B.Increased transmission reliability, with an edge transition in the centre of each bit
  3. C.Higher maximum transmission power
  4. D.Elimination of the need for a preamble
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Last updated: 19 May 2026

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