Vector network analyzer is PC-controlled

TEKTRONIX TTR500 Series USB Vector Network Analyzer USB-based RF test instrument delivers a performance range of 122dB and 6GHz frequency. Unit comes with VectorVu-PC analysis software and a built-in bias tee for testing active devices in this category. Product comes with small, compact form factor and dramatically lowers the barrier to entry and features an easy-to-use user interface for common tasks. Unit provides a full 2-port, 2-path S-parameter VNA for such applications as measuring passive/active components, antennas and matching networks, RF modules, test cables, adapters and more. Product’s specifications include 100kHz to 6GHz frequency range, 122dB dynamic range, less than 0.008dB trace noise, and -50 to +7dBm output power, all in a compact package weighing less than 5 pounds.  http://www.tek.com