Advanced Qualification · A-003 Measurements · A-003-003-001
What is a dip meter?
- A A marker generator
- B A field-strength meter
- C A variable frequency oscillator with metered feedback current
- D An SWR meter
Correct answer: C — A variable frequency oscillator with metered feedback current. From the official ISED question bank, verified word for word.
Why
A dip meter works by acting as a variable frequency oscillator that sends a signal into a circuit; when the circuit's frequency matches the oscillator's, energy is absorbed, causing a visible drop, or "dip," in the feedback current shown on the meter. 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.