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A recorder holds 88 parameters at an average of 2 Hz. The total sample rate is

  • A.44 samples per second
  • B.88 samples per second
  • C.1760 samples per second
  • D.176 samples per second

Answer: D

Correct answer: 176 samples per second

Multiply the parameter count by the average rate:

\[ 88 \times 2 = 176\ \mathrm{samples/s} \]

The figure is what must fit within the format's word rate, so it is the constraint the frame layout is built to satisfy. Averaging conceals a wide spread: control positions may be sampled eight times a second while fuel quantity appears once every four, and the layout is a matter of fitting the fast parameters in without starving the slow ones.

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