Lightwave Multimeter Mainframe The Agilent (now Keysight) Technologies 8163B Lightwave Multimeter is a basic measurement tool that provides flexible modular configuration and easy control of test solutions. This mainframe is used for optical component test. High resolution color display 2 slots for hosting power modules, return loss modules, compact tunable lasers or fixed laser sources Built-in applications: (Return Loss, Passive Component Test, Stability, Logging) GPIB Interface for remote control extended system trigger and clocking system Extensive triggering functionality Both LAN and GPIB interface for remote control