The Device Management Menu - Swann DVR4-2500 Operating Instructions Manual

The Device Management Menu

For accessing information about your hard drive. This is where you go to correct
or analyze any problem with your hard drive. Additionally, you'll be able to see at
a glance how much recording time you have left at your current quality settings,
as well as being able to format (erase all data from) the hard drive here. You can
format fl ash drives from this screen as well.
For confi guring the DVR's alarm and auto-email settings. Also, this is where you
can confi gure external alarm sensors - this is recommended for advanced users
only.
The setup window for confi guring the DVR to act as a PTZ (Pan, Tilt, Zoom)
controller. Recommended for advanced users.
For confi guring the DVR to interface with mobile devices (such as an iPhone or
mobile devices running Microsoft Windows Mobile
For setting up the motion detection features of the DVR. We suggest that motion
detection is, under most circumstances, the most practical recording method for
the DVR to employ.
30 Remember: After making changes to the settings press/click the APPLY button.
This is the DEVICE MANAGEMENT
menu. Here you'll fi nd options to
customise and confi gure settings
for:
• Your Hard Drive
• Alarm Settings
• PTZ (Pan, Tilt, Zoom) Devices
• Access from Mobile Devices
• Motion Detection
HDD
Alarm
PTZ
Mobile
® ).
Motion
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 fl ash 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 analog 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 strongly advise using digital wireless
technology, as this technology is much more resistant to interference from other
wireless equipment and environmental causes.
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!
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