The TDK RF Solutions LI-2000 LISN Interface is used to control all front panel features of an AC or DC LISN via manual or remote control. The LI-2000 operates as its own controller from a direct IEEE-488 bus connection. The interface can also be operated manually via the front panel push button switches. Protection Optical isolators or relays make for a complete electrical isolation between the bus and the V-network, permitting protection from ground loops and undesired RF feedback. Also, by taking operating power from the filtered rack host, noise from power line connections is eliminated.