FIBERSTAMP's 4x3G-SDI optical extender is used to extend the reach of 4K video transmission between SDI Source and Sink devices over fiber. The transmission distance can be extended up to 80km with Gigalight’s 3G-SDI optical modules. It includes a 4-lane transmitter and a 4-lane receiver. The transmitter has four standard BNCs used to receive SDI signal from Source and offers Co-axis cable equalizer to recovery SDI signal quality, at the same time, transforms SDI to SFP. The receiver firstly transforms SFP to SDI and then transmit recovered SDI signal to Sink with four standard BNCs, at the same time, offers Co-axis cable driver to amplify SDI signal for cable.