Advanced Qualification · A-003 Measurements · A-003-005-009
An oscilloscope probe must be compensated:
- Aevery time the probe is used with different oscilloscope
- Bwhen measuring a sine wave
- Cthrough the addition of a high-value series resistor
- Dwhen measuring a signal whose frequency varies
Correct answer: A — every time the probe is used with different oscilloscope. From the official ISED question bank, verified word for word.
Why
Each oscilloscope has slightly different input capacitance, so a probe must be adjusted to match the specific unit it connects to. The full explanation — and one for every question — is in Pro.
Practise this section
Measurements is section A-003 of the Advanced exam: Measurements: meters, oscilloscopes, counters, signal generators, and what a reading actually tells you.
Drill A-003 — free, no account