English
Alarm: Motion
Advanced Configuration
How Motion Detection Works
The way that the DVR looks for motion is quite straight forward
-it’s a process where it compares one frame (that is, a single image taken approximately a 25th/30th of a second from the previous image) with the next. A certain amount of“difference” between these two “frames” is interpreted as motion.
As a result, the DVR is able to detect when there is a change in the picture. However, this does not necessarily need to be something moving in the frame. For example, a light being turned on or off, a lightning flash or even the sun coming out momentarily on a cloudy day might be enough to trigger the motion detection on the DVR. However, as these events last only a moment (and are relatively rare) they will only create a few very short redundant clips, which will not take up too much space or pose a problem with scanning through footage.
This method of motion detection can, however, become problematic when using wireless cameras. As wireless technology is susceptible to interference, the static and image distortion common to wireless systems is often enough to trigger the motion detection inadvertently.
As a result, we strongly advise against using wireless cameras with any of our motion sensitive recording equipment, and advise the use of hard wired cameras. If you simply must use wireless technology, we advise using digital wireless technology as this technology is much more resistant to interference from other wireless equipment and environmental causes. However, any wireless technology, digital or otherwise, has serious limitations when combined with motion detection.
For a similar reason, don’t use PTZ systems and motion detection simultaneously. The DVR will interpret the camera moving as ‘motion’ and record. This is particularly true when using Cruise Mode - as the camera is moving almost continually, so too is the DVR recording almost continually!
If you’re planning to use Motion Detection as the primary (or sole) recording mode for the DVR, it’s worth taking a moment to ensure it’s properly configured.
If the motion detection sensitivity is too sensitive, then the DVR will record too frequently or continually - any benefit of motion detection will be lost.
If the motion detection sensitivity is not sensitive enough, then the DVR will not record when it should and may not record anything at all.
We think that motion detection is the best way to get your DVR to operate almost autonomously for long periods of time (typically weeks to months) without you having to worry about losing old footage.
Here, you’ll be able to set the motion detection features of the DVR for each channel. We suggest that motion detection is, under most circumstances, the most practical recording method for the DVR to employ.
How it Works: Once motion detection has been enabled for a channel, it will register to the DVR as a Motion Event. Thus, you can use the Motion recording mode in the schedule to trigger the DVR to record when motion detection triggers an alarm signal.
Enable: Whether or not motion detection is enabled on a specific channel. Each channel can be configured independently of one another.
Motion Detection: Click the applicable Set button to setup
the motion detection area for that channel. See “Alarm: Motion Detection Configuration” on page 43 for details on how to do this, and what it means.
Say, for example, you are trying to monitor your front yard, whilst in the background there is a busy street, and the cars driving past continually set off the motion detection. What can you do about it? Setting only part of the camera’s view to be motion sensitive might be the answer. This is useful in a number of circumstances, such as monitoring one particular door at the end of a busy hallway, or a backyard with a tree that keeps blowing in the wind.
Action: Here you can define what will happen when the camera you’ve selected detects motion.
Note: If you’ve used the
42
