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Which statement about MIL-STD-1553 is false?

  • A.A bus controller directs all traffic
  • B.Manchester encoding is used
  • C.Dual redundant buses are provided
  • D.Any terminal may transmit whenever it has data

Answer: D

Correct answer: Any terminal may transmit whenever it has data

That describes a contention bus and is the opposite of MIL-STD-1553's design. Nothing transmits until the bus controller commands it, which is exactly what makes the traffic deterministic: no collisions, and a worst case that follows from the controller's schedule.

The other three are accurate. A bus controller directs all traffic, Manchester encoding allows clock recovery from the data, and dual redundant buses ensure a severed cable does not stop the system.

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