Ground loops exist in many oscilloscope test setups. In particular, the P2104A, P2105A, and almost all commonly available ‘power rail’ probes, which measure small signals, are susceptible to errors caused by ground loops. The J2115A was designed to fit easily into your test setup, inline with your power rail probe, and to virtually eliminate the ground loop connection’s induced errors. A compact footprint, SMA connections, high CMRR, and high bandwidth enable this probe coaxial isolator to significantly reduce ground loop errors in your power rail noise measurements.