The simplest and most effective method for eliminating a ground loop is to add a wideband common mode transformer to the measurement, such as the Picotest J2102A Common Mode Transformer. The transformer for a low impedance PDN measurement must have very wide bandwidth, low loss and tight coupling, otherwise, the results will not be accurate over the measured frequency range. It is also important to maintain the 50 Ohm transmission line impedance through this transformer. The Picotest J2102A Common Mode Transformer accomplishes this with ease.
•Greatly attenuates the effects of low frequency ground loops
•Supports the 2 Port Shunt Thru impedance measurement required for Power Distribution Networks (PDN’s)
•Maintains 50 Ohm transmission line integrity to approximately 500MHz
•Works with all types of test equipment to eliminate ground loops, such as Network Analyzers, Oscilloscopes and Spectrum Analyzers
•J2102A Common Mode Transformer
•1 Year Warranty