Day/Night Settings for Arecont Vision AV3130 camera
“Exposure threshold to enter to night(day) mode†value sets the illumination level for switching from Day mode to Night mode and back. ( 1 - means that Day mode will be when illumination is very high; therefore, most of the time camera will be in the Night mode; 18 - means that Night mode will be when illumination is very low, and most of the time camera will be in Day mode).
To avoid continuous switching Day\Night modes at the border illumination there is a trusting interval “Exposure threshold delta to return to day(night) mode†(1 - short interval, 5 - long interval).
Good starting point is values 16 and 2. Depending on lighting conditions you would need to slowly adjust these values until switching between Day/Night modes will be satisfactory.