Advanced Qualification · A-003 Measurements · A-003-004-002
What factors limit the accuracy, frequency response and stability of a frequency counter?
- A Number of digits in the readout, speed the logic, and time base stability
- B Number of digits in the readout, external frequency reference and temperature coefficient of the logic
- C Time base accuracy, speed of the logic, and time base stability
- D Time base accuracy, temperature coefficient of the logic and time base stability
Correct answer: C — Time base accuracy, speed of the logic, and time base stability. From the official ISED question bank, verified word for word.
Why
A frequency counter counts cycles over a set time, so its precision depends entirely on how accurate and stable that internal clock, called the time base, really is. The full explanation — and one for every question — is in Pro.
Practise this section
Measurements: meters, oscilloscopes, counters, signal generators, and what a reading actually tells you.