DVR Security System Review

This is the Axis 291 1U video server rack and it is designed to neatly house multiple blade versions of the Axis video server range.  Attaching video servers to the rack is a fairly straightforward process, the front of the rack has three slots that accommodate the video servers.  The first thing you need to ascertain if you have never come across the device is what video servers can be attached, not every Axis video server is compatible with the device.

The blade versions of video servers that are compatible with the Axis 291 1U include the Axis 240Q, Axis 241Q, Axis 243Q and Axis 241S.  In total you can attach 3 Axis video servers to the rack, the back of the device has an Ethernet port so you can control and monitor cameras attached to it to the Internet or a local area network.  The rack has a number of connector interfaces, there are four transistor outputs built in, you can use the transistor outputs to connect external alarms to the device.  When an alarm connected to the video server racks transistor outputs is activated the status of the device will show in the event configuration.

Security cameras with pan tilt and zoom functions can be connected and controlled through the video server rack, the device is fitted with an RS-485 interface to support PTZ cameras.  Not all models of analog PTZ security cameras can be routed through the rack but the list it does accommodate is quite extensive.  Axis produce a number of drivers for configuring and setting up analog PTZ cameras, you can download them for free on their website.

The video server rack can be used to route power to other external devices other than alarms, these can be connected to its auxiliary DC power output.  The rack is quite versatile in its function but there are some limitations when it comes to installing it.  The rack must be installed within 1.8 meters of its power source and there must be at least 5cm of space on either side of the device to ensure it is properly ventilated.  Its possible to place the device on a shelf if necessary or it can be mounted inside equipment racks that are found in large surveillance system installations.

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