Using this BZBGEAR BG - H3GS HDMI to SDI Converter is easy. First, connect your HDMI source device to the converter's HDMI input port. Then, connect the converter's SDI output port to your SDI display. You'll quickly see the HDMI signal on the SDI display. When using it, make sure the cables are properly plugged in to avoid signal loss. Keep the converter in a dry and cool place to prevent overheating. If you need to clean it, use a soft, dry cloth. Don't use any harsh chemicals as they may damage the device. This converter is designed for long - distance transmission, so it can handle connections up to 100 meters for 3G - SDI, 200 meters for HD - SDI, or 300 meters for SD - SDI. Enjoy high - resolution signal conversion with this great device.