Advanced Qualification · A-003 Measurements · A-003-002-009
What is the output PEP from a transmitter, if an oscilloscope measures 400 volts peak-to-peak across a 50 ohm dummy load connected to the transmitter output?
- A 400 watts
- B 200 watts
- C 600 watts
- D 1000 watts
Correct answer: A — 400 watts. From the official ISED question bank, verified word for word.
Why
To find the power, first turn the 400 volts peak-to-peak reading into a peak voltage by dividing by two, giving 200 volts. 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.