Which of the following parameters does a spectrum analyzer display on the vertical and horizontal axes?

A spectrum analyzer is an essential piece of test equipment used to examine signals in the frequency domain. On its display, the vertical axis represents signal amplitude (typically in decibels or voltage), while the horizontal axis represents frequency. This allows operators to see the strength of various signals, harmonics, or noise spread across a specific band. It is important to contrast this with a standard oscilloscope, which views signals in the time domain by plotting amplitude on the vertical axis and time on the horizontal axis. Other distractors mention Standing Wave Ratio (SWR), which is a measure of impedance matching typically displayed by an antenna analyzer, network analyzer, or SWR meter, not natively on the primary axes of a standard spectrum analyzer.