Advanced Qualification · A-003 Measurements · A-003-005-002
What factors limit the accuracy, frequency response and stability of an oscilloscope?
- A Tube face voltage increments and deflection amplifier voltages
- B Accuracy of the time base and the linearity and bandwidth of the deflection amplifiers
- C Deflection amplifier output impedance and tube face frequency increments
- D Accuracy and linearity of the time base and tube face voltage increments
Correct answer: B — Accuracy of the time base and the linearity and bandwidth of the deflection amplifiers. From the official ISED question bank, verified word for word.
Why
An oscilloscope draws waveforms by timing the sweep across the screen and amplifying the signal to move the beam up and down. 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.