Question
The KNX RF duty cycle limits how long a device may transmit. What is that limit?
Answer
D — 1 %, i.e. a maximum of 36 seconds of transmission per hour
Correct: the duty cycle is 1 %, equal to a maximum transmission duration of 36 seconds per hour.
Source
KNX Basic Course Documentation — 3.1 — p. 142
All proposed choices (exam context)
- A.10 %, i.e. a maximum of about 6 minutes per hour
- B.1 %, i.e. a maximum of 3.6 seconds per hour
- C.100 %, with no time limit
- D.1 %, i.e. a maximum of 36 seconds of transmission per hour✓
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