8
Preface
Features
The Network Disk Recorders WJ-ND200 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 picture quality.
Up to 16 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-ND200 (this unit) using a web browser installed on a PC connected to a network. Up to 4 PCs
(web browsers) can access this unit concurrently and it is possible to perform the settings and operate this unit.
Recording Functions
Multi-recording
It is possible to perform multiple recordings using a single
network disk recorder even if the operating environments
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 sched-
uled 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 oper-
ating 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 sup-
plied, the recording mode (recording rate) can be changed
to high rate to record pictures.
Removable disk
Two removable disks are provided, and they can be
removed and inserted easily and quickly on the front of the
unit.
When using two drives, it is possible to replace the disks
without interrupting recording.
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 des-
ignated 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 user name
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 oper-
ating this unit if their IP addresses are not registered.
• If a hard disk crashes, the mirroring function prevents
any recorded pictures loss by continuing recording on
the another hard disk. (when using 2 HDDs)
