EMCO Line Impedance Stabilization Networks (LISNs) are multi-line low pass filter networks used for conducted emissions measurement. It is placed between the power mains and the EUT (Equipment under Test) to stabilize line impedance, provide a 50 ohm RF connection, and eliminate unwanted RF signals from the line supply. In addition, LISNs can be used to predict radiated emissions for diagnostic and pre-compliance testing. The Model 3816/2 is designed and tested in accordance with IEC Publication 1010, Safety Requirements for Electronic Measuring Apparatus. It has also received CSA safety certification from the Canadian standards Association, a further indication of ETS-EMCO's commitment to safety.