Dahua DHI-NVR5208-4KS2 User Manual page 196

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The surveillance environment shall not be too complicated. The IVS function is not suitable
for the environment of too many objects or the changing light.
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The surveillance environment shall not contain glasses, reflection light from the ground, and
water. Free of tree branches, shadow, mosquito and bugs. Do not use the IVS function in
the backlight environment, avoid direct sunlight.
Step 1 Select Main Menu > AI > PARAMETERS > IVS.
The IVS interface is displayed. See Figure 4-127.
Step 2 Select a channel from the dropdown list.
Click Add and then set corresponding rule. See Figure 4-128.
Click to delete the selected rule.
Figure 4-127
Local Basic Operation 185