Amateur Extra › E8 Signals and Emissions › E8A03
E8A03
Which of the following describes a signal in the time domain?
Pick an answer to check it.
Answer: B. Amplitude at different times
A time-domain view, like an oscilloscope, shows signal amplitude plotted against time. A frequency-domain view, like a spectrum analyzer, shows amplitude versus frequency instead.
Tip: Time domain = amplitude vs. time (oscilloscope).