Using this Ross DFR-8110A digital terminal is straightforward. First, make sure the power supply is properly connected. The four Ross UDA 8005 analog utility amp cards and the Leitch VDA-6830 video distribution amplifier will work together to provide you with the necessary functionality. When using it, note that there is only one power supply, so avoid overloading it. For maintenance, keep the terminal in a dry and clean environment. Regularly check the connections of the cards and the amplifier to ensure they are secure. If you encounter any issues, it's best to consult a professional.