Impedance Stabilization Networks (ISNs) are used for either single or dual, unscreened symmetric (balanced) wire pairs. Due to the variety of telecom standards throughout the world, different specifications are required for the transmission of the wanted signal. Schaffner ISNs are supplied as a kit comprised of a base unit, an impedance adapter for one type of connector/connection standard, and three output adapters. Special connection standards can also be ordered.
Additionally, because it can couple RF signal in or out of the connected port, the ISN System 22 can also be used to perform conductive immunity testing.