For example: Agilent E4440A or Anritsu 68369

Analyzer

Analyzers, as test equipment, are versatile instruments used for measuring, analyzing, and characterizing various electrical, optical, or signal parameters, providing valuable insights into the performance and behavior of components, systems, and networks.

Manufacturers: Keysight / Agilent, Fluke, Tektronix, Motorola, Aeroflex, Anritsu, Rohde and Schwarz, Lecroy, Wavetek, JDSU, Audio Precision, Hioki, Wandel and Goltermann, Keithley Instruments, General Dynamics, Advantest, BK Precision, Dranetz-BMI, Bird Electronics, Yokogawa, Boonton, IET, IFR Systems, Spirent, Ancot, Fluke Networks, Acterna, Willtek, Voltech, TTC