Using this Kramer 613R/T 3G SDI extender is easy. First, connect it to your 3G SDI source and the receiving device through the appropriate ports. Make sure to use single - mode fiber cables for the best results. When handling, be gentle to avoid damaging the delicate components. Keep it in a cool and dry place to prevent overheating. Regularly check the connections to ensure they are secure. If you notice any performance issues, check the power supply and cable connections.