5-38
Cisco Video Surveillance 8020/8030 IP Camera Reference Guide
Chapter 5 Configuration
Applications > DI and DO
Step 1
Create a new motion detection window.
Step 2
Click the
Profile mode
tab.
Step 3
Select the applicable Schedule mode. Manually enter a time range.
Step 4
Click
Save
to enable the settings and click Close to exit the page.
This motion detection window will also be displayed on the Event Settings page. You can go to
Event >
Event settings > Add Event > Trigger
to select it as a trigger source. Seethe
for detailed information.
How does Motion Detection Work?
There are two motion detection parameters: Sensitivity and Min. Item Size. Sensitivity is a value that
expresses the sensitivity to moving objects. A higher sensitivity setting allows camera to detect slight
movements while a lower sensitivity setting will neglect them.
The minimum item size is a threshold value that determines how many “alerted pixels” can trigger an
event. When the size of an intruding object is larger than the minimum size, and its movement persist
for 0.3 second, the motion is judged to exceed the defined threshold; and the motion window will be
outlined in red. With a large minimum item size, the size of moving object is considered as smaller than
the minimum item size, no motion alarm is triggered. With a smaller minimum item size, the same
moving object triggers the alarm.
For applications that require a high level of security management, it is suggested to use higher sensitivity
settings. However, a higher sensitivity level can also produce false alarms due to fast light changes when
switching between the day and night modes, AE switch, turning the light on or off, etc.
Applications > DI and DO
•
Digital input—Select High or Low as the Normal status for the digital input. Connect the digital
input pin of the camera to an external device to detect the current connection status.
•
Digital output—Select Grounded or Open to define the normal status for the digital output. Connect
the digital output pin of the camera to an external device to determine the current status.
Set up the event source as DI on Event > Event settings Add Event > Trigger. See the
settings” section on page 5-31
for detailed information.
Applications > Tampering detection
This section explains how to set up camera tamper detection. With tamper detection, the camera is
capable of detecting incidents such as redirection, blocking or defocusing, or even spray paint.
To set up the camera tamper detection function, follow these steps:
Step 1
Click to select the check box before tampering conditions: Tampering detection, Image too dark, Image
too bright, and Image too blurry, then enter the tamper trigger duration (10 sec. ~ 10 min.).
