19System ConnectionsConnecting a USB DeviceThis unit is designed with a USB port so that you can connect your USB device and use the build in DVRrecord function. It is also used for software upgrade. See figure below: Please use a USB connector to connect the external USB device to the USB port on the unit. Make sure that Software file for upgrade is stored in the USB device before connection. For more information about DVR, please refer to DVR File System (Page 31.Connecting to a TV AntennaConnect TV signal input source from the aerial to the TV jack on the rear panel of the unit.After connection, turn on the power of the unit. Then press the INPUT button and the direction buttonsto select ATV or DTV mode, press the ENTER button to confirm and conduct program selection.