The VersiVision FVT1000 and FVR1000 series fiber optic video modems available from Versitron Inc. extend a frequency-modulation video signal over a single fiber optic cable. They provide high-quality transmission of one-channel simplex video at distances of up to 3 km with multimode fiber and up to 40 km with single-mode fiber. A BNC connector provides the copper interface for the video input/output. ST and SC optical connectors are standard for the fiber optic interface. Both modems are compatible with NTSC, PAL and SECAM standards, and both are available as stand-alone devices.