Discussion
Which of the following does not describe MIL-STD-1553?
Any terminal may transmit whenever it has data
A bus controller directs all traffic
Manchester encoding is used
Dual redundant buses are provided
Answer: B
Correct answer: Any terminal may transmit whenever it has data
That describes a contention bus, and it is the opposite of how MIL-STD-1553 works. No terminal transmits unless the bus controller commands it, which is precisely what makes the traffic deterministic - nothing collides and the worst case follows from the controller's schedule.
The other three are accurate: a bus controller directs all traffic, Manchester encoding is used, and dual redundant buses are provided so that a severed cable does not stop the system.
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