355 Fast play6 Previous frame7 Next frame8 Volume9 Previous file10 Next channel11 Next file12 Previous channel13 Search14 Backup4.3.2 Basic Operation4.3.2.1 PlaybackThere are various search modes: video type, channel number or time. The system can maxdisplay 128 files in one screen. You can use page up/down button to view if there are morethan one page.Select the file name and double click mouse (or click enter button), you can view file content.4.3.2.2 Playback ModeThere are two playback modes: 4-ch and all-channel. In 4-ch playback mode, you can selectthe 1/2/3/4-ch playback according to your requirement. In all-channel mode, system canplayback in full channels. Please note the 4-ch has no all-channel playback mode.4.3.2.3 Accurate playbackInput time (h/m/s) in the time column and then click playback button, system can operateaccurate playback.4.3.2.4 Synchronized playback function when playbackDuring playback process, click numeral key, system can switch to the corresponding channelvideo of the same time.4.3.2.5 Digital zoomWhen the system is in full-screen playback mode, drag your mouse in the screen to select asection and then left click mouse to realize digital zoom. You can right click mouse to exit.4.3.2.6 File backupSystem supports backup operation during search. You can draw a √ before file name(multiple choices). Then click backup button (Button 14 in Figure 4-10).4.3.2.7 Slow playback and fast playbackPlease refer to the following sheet for slow play and fast playback function.Button Illustration RemarksFast play button In playback mode, click this button toswitch between various fast play modessuch as fast play 1,fast play 2 and more.Slow play button ► In playback mode, click this button toswitch between various slow play modessuch as slow play 1 or slow play 2.Frame rate mayvary due todifferent versions.Play/Pause► In slow playback mode, click this buttonto switch between play/pause modes.Previous/next In playback mode, you can click │_ and` to view previous or next video incurrent channel.4.3.2.8 Backward playback and frame by frame playbackButton Illustration Remarks