The USB-TG124A from Signal Hound is a USB-based tracking generator that operates from 100 kHz to 12.4 GHz. It works with the USB-SA124A spectrum analyzers to measure filters, attenuators, amplifiers and other components to carry out scalar network analyzer measurements. The tracking generator has an amplitude range from -30 to -12 dBm and an absolute accuracy of 2 dB with a scanning rate up to 700 points/sec.