Fiber Optic Receiver, DVI Dual-Link, 7x LC. The DVI-7320 is a high-speed fiber optic transport system capable of distributing ultra-high resolution Single-Link or Dual-Link DVI signals over cable lengths up to 500 meters (1,640 ft.) while maintaining flawless image quality. On the source side, an optical transmitter module converts DVI input signals into light pulses for transmission over 7 strands of multi-mode fiber optic cable.