Using the For.A HVS-1000HS digital video switcher is easy. First, connect the main unit and the operating unit with the provided connection cables. Then, plug in the correct power supply to power up the system. You can use the operating unit to control the switcher and select different inputs for your program, preview, aux, and input preview outputs. When using it, make sure the environment is dry and well - ventilated to avoid overheating. For maintenance, clean the unit regularly with a soft, dry cloth. If you encounter any issues, check the software version and consider updating it to the latest one.