Quadrox QGuard Installation Manual - Manual (Page 4)

GuardNVR Installation Manual 4
Version 4.4 Series
1 Introduction
GuardNVR 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 GuardNVR, up to 20 cameras can be permanently recorded
while multiple operators at different locations on the network are accessing the GuardNVR
network video server.
Being a networked device, GuardNVR utilizes two basic principles of the
Internet/Intranet technology:
GuardNVR 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.
GuardNVR 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
GuardNVR uses Web Browser technology. To
locally monitor video, the GuardNVR also
provides a local interface via a PC monitor
directly connected to the GuardNVR. 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 GuardNVR 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 GuardNVR can be set to record continuously.
Intelligent Storage Option
GuardNVR 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 GuardNVR to
store pre- and post-alarm video. Pre- and Post-alarm images are often more important than the