Using the Panasonic AV - HS450 live switcher is straightforward. First, connect your video sources to the 16 SDI inputs. Then, use the AV - HS450C1N control panel to select and switch between different sources. You can view the video on the Dual - screen MultiViewer. Connect your output devices to the 4 SDI outputs or 2 DVI outputs as needed. When it comes to power, make sure the power supply for the AV - HS450C1N Controller is properly connected as it's internally wired. As for maintenance, keep the device in a clean and dry environment. Regularly check the connections to ensure they are secure. If you encounter any issues, refer to the user manual or contact Panasonic support.