The 85027B Directional Bridge is designed to operate with either the 8757 Scaler Network Analyzer in ac or dc detection modes or with the 8756 or 8755 Scaler Network Analyzers in ac detection mode. This bridge offers high directivity, excellent test port match, and a measurement range of 10MHz to 26.5GHz in coax. The unit has a nominal impedance of 50-ohms and uses 3.5 mm (female) connectors