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Preface
Features
The Network Disk Recorders WJ-ND300A series are designed for use within a surveillance system, and perform
recordings and playbacks pictures from network cameras in the system.
The network disk recorder is a recording device using a hard disk drive to record camera pictures instead of using
video tapes so that pictures recorded by repeated overwriting will not experience deterioration of the recorded pic-
ture quality.
Up to 32 cameras can be connected via a network and it is possible to record their camera pictures. It is possible to
perform the settings or operate the WJ-ND300A (this unit) using a web browser installed on a PC connected to a
network. Up to 8 PCs (web browsers) can access this unit concurrently and it is possible to perform the settings and
operate this unit.
"WJ-ND300A" is the generic name of the network disk recorders WJ-ND300A series.
Various Recording Functions
• Multi-recording
It is possible to perform multiple recordings using a single network disk recorder even if the operating environ-
ments are different, for example, recording pictures of cameras in different places at different times.
• Schedule recording
It is possible to perform recording automatically at a scheduled time on a designated day of a week. It is also
possible to perform recording at a different recording rate according to time range.
• Emergency recording
In the case of an emergency, emergency recordings will be given a higher priority than other recording modes by
operating an external switch.
• External timer recording
It is possible to perform recording automatically using an external timer.
• Event recording
At an event occurrence, such as an alarm signal is supplied, the recording mode (quality and recording rate) can
be changed to high quality to record pictures.
Downloading/Transmitting Images
It is possible to download (save) the currently displayed image in the web browser window onto the hard disk of a
PC. By establishing an FTP server, it is possible to transmit images to the designated FTP server periodically. When
an event occurs, it is possible to transmit images from the camera installed in the place where the alarm occurred.
Event Notification Function
When an event occurs, it is possible to send e-mails to designated addresses to notify of the event occurrence.
It is also possible to send an e-mail with an image recorded when the event occurred.
Security Function and Reliability
• User authentication function (registration of ID and password) allows users access to predetermined selection of
the available functions. Up to 32 users can be registered.
• Host authentication function restricts devices from operating this unit if their IP addresses are not registered.
• If a hard disk crashes, the RAID 5 function prevents any recorded pictures loss.
