User Manual of Digital Video Recorder 
 
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Figure 6. 20 4-ch Synchronous Playback Interface 
 
 
  If more than one channel is optional, the synchronous playback will be activated. 
  The record files will be marked by two lines on the process bar. The upper one indicates the record 
files of the selected channel; and the lower one indicates the record files of all the selected channels. 
3.  Click the icon    on the playback control toolbar, and the record files will be played back reversely. 
 
For DVR series, up to 16-ch simultaneous reverse playback is supported. While for Hybrid DVR series, up to 
16-ch (with 704*576 resolution) simultaneous reverse playback is supported; up to 8-ch (with 1280*720 
resolution) simultaneous reverse playback is supported; up to 4-ch (with 1920*1080P resolution) simultaneous 
reverse playback is supported and up to 1-ch (with 2560*1920 resolution) reverse playback is supported.