
The Basic Liquid Crystal Controller is compatible with the λ/2 Liquid Crystal Variable Retarder (#63-039) and can electrically control the retardance of a single retarder by manually changing the applied voltage. It allows the convenient, stand-alone benchtop operation of the Liquid Crystal Variable Retarders. LED voltage and frequency readouts are shown on a digital display. Additionally frequency and voltage settings of the Basic Liquid Crystal Controller can be easily stored and the system memory retains voltage and frequency settings even at power down.