Dahua HCVR21**HS-S2 Series, User Manual

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HDCVI Series DVR User
’s Manual
109
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Preview drag: If you want to change position of channel 1 and channel 2 when you are
previewing, you can left click mouse in the channel 1 and then drag to channel 2, release
mouse you can switch channel 1 and channel 2 positions.
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Use mouse middle button to control window split: You can use mouse middle button to switch
window split amount.
Preview Control
The preview control function has the following features.
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Support preview playback.

In the preview desktop, system can playback previous 5-60 minutes record of current
channel. Please go to the Main Menu->General to set real-time playback time.

Support drag and play function. You can use your mouse to select any playback start time.
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Support playback, pause and exit function.

Right now, system does not support slow playback and backward playback function.
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Support digital zoom function.
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Support real-time backup function.
You can follow the contents listed below for the operation instruction.
Preview control interface
Move you mouse to the top centre of the video of current channel, you can see system pops up the
preview control interface. See Figure 4-14 and Figure 4-15. If your mouse stays in this area for more
than 6 seconds and has no operation, the control bar automatically hides.
Figure 4-14 Analog Channel
Figure 4-15 Digital Channel
1) Realtime playback
It is to playback the previous 5-60 minutes record of current channel.
Please go to the Main menu->Setting->->System->General to set real-time playback time.
System may pop up a dialogue box if there is no such record in current channel.
2) Digital zoom
It is to zoom in specified zone of current channel. It supports zoom in function of multiple -channel.
Click button , the button is shown as .
There are two ways for you to zoom in.
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Drag the mouse to select a zone, you can view an interface show as Figure 4-16.
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