11Operationkeep all the existed channels and add newly found channels to the end of the channel list. To stop search, press MENU button; detected channels will be stored.• Manual tuning: Press OK button to enter into manual tuning menu:Channel: select channel number.Band: select frequency band (VHFH/UHF/VHFL).Frequency: adjust the current frequency step by step.• Fine tune: adjust the current frequency manually to improve the quality of signal if it is too week.• Sound system: select the sound system (DK/BG/I/M).• Channel edit:Current Channel: select the current channel number.Target Channel: select a target channel for swapping.Skip: select Current channel number to be skipped. Select Skip item and select Yes to confirm. Now this channel will be skipped when next/previous channels are selected.Swap: select Current channel and Target channel to be swapped. Select Swap item and and select Yes to confirm swapping.USB operationGeneral information USB file systems supported: FAT32. 2.0 USB version is supported. For correct and satisfactory operation, licensed USB devices of famous brands should be used with this unit. Avoid using USB devices of unknown brands. Playback of images and music of only JPEG and MP3 format is supported. The output capability of the USB port is 1 A.• This unit supports playback of video files with 3GP, AVI, DAT, M2TS, TS, MKV, MOV, VOB extension, with video codecs H264/AVC, H263, DIVX, XVID, MPEGI, MPEGII and audio codecs PCM, DD(AC3), MP3, WAV, WMA. The above list of extensions and codecs is for information only and is not a guarantee that all files having the above extensions and codecs sohuld be read by this unit.• Some AVI files cannot be played due to their parameters and recording conditions. Video files more than 2 Gb having AVI extension can be played partially. According to the USB 1.1/2.0 Standard, usage of a USB device with power current consumption exceeding 500 mA is not recommended without supplementary power supply. Failure to use supplementary power for connected USB drives with power consumption exceeding this value as well as defective USB drives may cause mechanical or thermal changes of elements of this unit as well as failure of internal elements of the USB port. Such damages are not warrantee cases.Warning: usage of external USB drives containing BIN files in the root directory may cause malfunction of the unit or damage to the software.File playbackInsert a USB into the USB jack. Press MENU button, select Media option and press OK button. The screen will show USB playback menu:MultimediaMovie showPhoto showMusic showAuto play• Video file playback: Select Movie Show item and press OK button. Press cursor but-tons to select a file and press OK button to start playback. During playback press MENU button to show playback menu in which you can select an operation by LEFT/RIGHT cursor buttons and perform this operation by press-ing OK button. The operations include Play/Pause, Backward, Forward, Prev., Next, Stop, Repeat Mode, AB Repeat setting, Playlist, Info., Slow Forward, Step Forward, Goto Time,