3671 series vector network analyzer include 3671C (100 kHz~14GHz), 3671D (100 kHz~20GHz), 3671E (100 kHz~26.5GHz), 3671G (10MHz~43.5GHz). 3671series network analyzer provides frequency response, Single-port, response isolation, enhanced response, full-dual port, electronic calibration etc. Offer various display formats, such as logarithmic amplitude, linear amplitude, phase, group delay, Smith chart and polar coordinates. It designed with several standard interfaces, such as: USB, LAN, GPIB, VGA, and HDMI interface. It can accurately measure the amplitude frequency characteristics and phase frequency characteristics and group delay characteristics of microwave network. 3671 series vector network analyzers retain the features of high-end vector network analyzers, including performance indicators, instrument appearance, display effect, software interface, etc., while controlling the volume, weight, wind noise and other aspects of the instrument to create a good experience for users. The product can be widely used in communication and other fields, which are indispensable test equipment in university scientific research.