Quadrox QGuard User Manual - Manual (Page 7)

QGuard User Manual 7
Version 4.9 Series
1 Introduction
QGuard is a unique digital video surveillance solution, which combines three major functions
in one Network Video Recorder (NVR) or Digital Video Recorder (DVR): local digital
recording, multiplexing and simultaneous transmission of the video via existing networks
(TCP/IP). To a standard QGuard, up to 16 cameras can be permanently recorded while
multiple operators at different locations on the network are accessing the QGuard device.
Being a networked device, QGuard utilizes two basic principles of the
Internet/Intranet technology:
 QGuard works over the TCP/IP network protocol, which provides maximum
connectivity. This means that the existing computer network infrastructure can be
used eliminating extra installation expenses.
 QGuard uses a web-based user interface to view live images, recordings, etc. More
specific it uses Microsoft Internet Explorer.
Remote and Local Monitoring
To remotely monitor the connected cameras, the
QGuard uses Web Browser technology. To
locally monitor video, the QGuard also provides
a local interface via a PC monitor directly
connected to the QGuard. This local interface
allows an operator to see live video from the
connected cameras without the need for
additional client computers on a network.
Continuous Activity-Based Recording
By default, a QGuard continuously records all images from all the connected cameras based
on activity detection. In this case, only movement is recorded. If there is no movement, no
recording takes place. If necessary, the QGuard can be set to record continuously.
Intelligent Storage Option
QGuard uses a first-in/first-out (FIFO) overwrite principle. Once the disk is full, the oldest
images are overwritten.
Semi-Continuous recording (recording based on activity detection) allows a QGuard to store
pre- and post-alarm video. Pre- and Post-alarm images are often more important than the
images at the time of the alarm event itself. Up to 5 minutes of pre- and post-alarm video can
be stored.