Part 2/9:
Frequency meters serve as essential tools in examining the characteristics of various signals, particularly in the realm of electromagnetic waves. Traditional frequency meters utilize oscillators, with measurements typically taken in microseconds. The spectrum analyzers, which have been foundational in this field, can manage a wide range of frequencies—from tens of hertz (Hz) to gigahertz (GHz). However, older spectrum analyzers often lack modern selector features, making interpretation and utilization of the data they compile more challenging.