What type of signals does the Spectrum Analyzer PSA65-C test?

The Spectrum Analyzer PSA65-C is specifically designed to test radio frequency (RF) signals. RF signals refer to electromagnetic waves that fall within a certain frequency range, typically used for communication purposes, including television, radio, and other forms of wireless communication. This type of analyzer captures and visualizes these signals, allowing users to analyze the frequency spectrum, identify signal strength, and detect interference or anomalies.

By focusing on RF signals, the PSA65-C provides critical insights into how these signals behave in various environments, enabling engineers and technicians to optimize performance and troubleshoot issues effectively. This capability is essential in both military and civilian contexts, where reliable communication is paramount.

The other options do not apply to the PSA65-C’s function. While digital and analog signals are important in communication systems, they fall under different categories rather than specifically indicating the frequency range that the analyzer targets. Optical signals pertain to light and fiber optics, which are outside the scope of RF signal testing and analysis. Thus, the correct focus of the PSA65-C is purely on RF signals.