NVR Quick Start
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9. There is no sound when preview or playback the NVR, why?
A. Check if there is an audio in your IPC: you can test it through IE or the built-in client or through
computer.
B. Wrong audio format: NVR only supports G711 audio compressed format. Please adjust your
format through IE of the built-in client.
10. There is no diagram after being saved.
It can be a wrong username or password. It might also because the camera gun may use a
proprietary protocol leading to incompatibility. Suggestion: use camera guns that support i8 or
other proprietary protocol or the internationally agreed ONVIF.
11. There is a videotape prompts of a certain diagram and also has images when double clicked,
but there is no image in multi-channel preview, why?
Click that channel with your right-hand button and there is a pattern pull-down list in the Remote
Configuration, try to replace the main stream with a sub stream and save it. If there is still no
image, it might because the sub stream is set too high, below 1m is suggested.
12. A multi-channel preview is normal, but when double-click on the single picture, it turns to black
screen or the image is stuck, unable to playback the video.
Please check whether your IPC is 1080 p, if yes, then click on the Settings - > device parameters -
>pattern, and see if you can use 1080 pattern. 1080p videos can only display sub stream under
the 720P channel pattern. Please set 1080p IPC to the specified channel. Select the correct mode
and reboot OK.
13. Fail to login for IE viewing?
Please set up according to the following method:
1) IE setting--Internet options--Security--Custom level--enables all relevant options for ActiveX
2) Find and delete original plugin file “dvr_activex” first, then download and install it again
correctly.
