Coaxial AC/DC Detector 10MHz-26.5GHz, 3.5mm, for 8757D Scalar Network Analyzer The Agilent (now Keysight) 85025B is a Coaxial AC/DC Detector with a bandwidth from 10 MHz to 26.5 GHz designed specifically for operation with Agilent (now Keysight) 8757D scalar network analyzer of the 8757 family (not compatible with 8756 or 8755). Detect either a modulated AC or a unmodulated DC microwave signal. AC/DC detection mode range: +16 dBm to > -50 dBm Input connector: APC 3.5 (m)