Extra exam question E4B01
Subelement E4, AMATEUR PRACTICES· Group E4B
Which of the following factors most affects the accuracy of a frequency counter?
- A.Input attenuator accuracy
- B.Time base accuracy (correct answer)
- C.Decade divider accuracy
- D.Temperature coefficient of the logic
WhyA frequency counter's accuracy is most affected by the accuracy of its internal time base. A frequency counter's accuracy is fundamentally limited by the accuracy of its internal time base, the reference oscillator against which the incoming signal's cycles are counted, since any error in that reference translates directly into an error in every displayed frequency, answer B. Input attenuator accuracy, decade divider accuracy, and the temperature coefficient of the logic circuitry all matter less than the fundamental reference the whole measurement is built on.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.
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