Qvis iBox nvr User Manual page 84


Gain mode: It is to set the video noise level. Check the Auto setting and the system
automatically sets the video gain. Check the Manual setting and you can set gain
threshold and brightness yourself.

Gain threshold: This is for you to set gain value. Each different series product has
different default values. The lower the value, the lower the noise. But the video
brightness may become too dark under the low illumination. If the value is high, it can
enhance the video brightness under the low illumination, but the video noise may
become too high. You will have to use your own judgment to set the preferred level.

BLC: Check the box here to enable the backlight compensation function. The system
can automatically set the exposure level according to the environment so that you can
view the darkest section of the video.

Day/Night mode: This is to set the video color to either a black or white mode.
a) Color: Camera only outputs color video.
b) Auto: Camera auto selects color or black and white video according to device feature
(Video whole brightness or there is any IR light or not.).
c) Black and white: Camera only outputs black and white video.

Exposure mode:
a) Auto: The video's brightness as a whole can adjust automatically within the normal
exposure threshold according to different environments. The lower the gain value,
the smaller the noise is.
b) Manual: This is to display manual exposure value.

Delete: Please select one device in the 'Added device' list and then click it to remove.

Manual add: Click it to add the IPC manually. The port number is 37777. The default user
name is admin and password is admin.
Click the Manual Add button; you can go to the following interface (see Figure 5-73).
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Figure 5-73
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