ACTi I51 User Manual download pdf (Page 69)

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Firmware User’s Manual V6.08.30

possible combinations of settings using sensitivity level and trigger threshold percentage.

The objects listed in each cell will trigger an alarm under given settings:

Low threshold (0-5%)

High threshold (5-100%)

Low sensitivity

(0-65)

Big and fast

Small and fast

Big and fast

High sensitivity

(65-100)

Big and fast

Big and slow

Small and fast

Small and slow

Big and fast

Big and slow

The camera’s default sensitivity is 70 and threshold is 10%. By these default values, only

the rabbit and the turtle would trigger an alarm while the butterfly and the snail would be

ignored by the motion detection system.

Important: Please remember that changing the size of the motion detection region has an impact

on the threshold – the bigger is the size of the motion detection region the smaller should be the

threshold value if you want the same object size to trigger motion. For example, if you increase

the motion detection region to twice the previous size, please remember to reduce the threshold

to half its original value (from 10% to 5%). On the other hand, changing the location of the motion

detection region has no impact on threshold.

Trigger interval

The last configuration item is the trigger interval. It is the time period from the beginning of the

triggered event during which the all motion activities are ignored by the camera. This is designed

to avoid needless repetitive reporting of the same intrusion. Trigger interval 20 seconds would

mean that when the even happens, camera will take certain one-time actions and ignore the

continuing activity in the motion detection region for 20 seconds. When 20 seconds are over, the

camera will produce a new alarm if there are still action in the motion detection region, and take

actions again.

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ACTi I51 User Manual Page 69