The Blackmagic Design Studio Converter 2 inputs video signals transmitted over optical fiber and converts the signals to SDI for use with video switchers. When used in conjunction with the Blackmagic Design ATEM Camera Converter, you can send video signals up to 28 miles between camera and switcher using available optical fiber cables. By comparison, sending an HD-SDI signal over traditional copper cable is usually limited to about 300 feet, depending on the quality of the cable.