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Network Video Server User’s Guide
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1. Trigger Condition
This is to select option how to send an event signal to NETWORK VIDEO SERVER.
① Activation of digital input port
The NETWORK VIDEO SERVER receives an event signal from external devices such as infrared
Sensor Alarm sensor etc.
The “Trigger Condition” (closed or opened) defines the alert state of the digital IO connector. There are
two types of sensors on the market.
One type of sensor keeps the circuit open and closes the circuit in case it detects a motion
-> Trigger Condition = closed.
The second type keeps the circuit closed and opens it in case it detects a motion.
-> Trigger Condition = opened.
② Motion Detection
This is to detect motion from camera by S/W data comparison. When you select “Motion detection”, the
NETWORK VIDEO SERVER detects a motion triggered by camera lens. To detect motion the camera
compares a previous image from present image. When the motion is detected, the camera recognizes the
data changing through comparing the previous image data with present one.
Please note:
It does not work at low light conditions or in darkness.
Motion detection sensitivity: Possible values are 0 to 9.
0 is the lowest sensitivity level. At this level the camera will detect virtually no motion.
9 is the highest setting. At this level the camera will generate a lot of false alarms. The changes in the
image caused by the JPG algorithm are enough to trigger an alarm.
Levels between 3 and 6 give good results and are therefore recommended.
③ Periodically
The NETWORK VIDEO SERVER performs the action based on a time interval (entered in seconds).
About “from … to ….”:
This controls the time window in which the trigger is active. The time is entered in the international 24 hour
time format. Example: 6 = 6 am. 20 = 8 pm.
CAUTION
Using NETWORK VIDEO SERVER’s integrated Motion Detection Function for security
surveillance is not recommended as the function does not work as reliably as professional security
sensors. The use of 3
rd
party Video Surveillance Software and Professional Sensors is
recommended.