Understand the solution

CCTV Handbook 2013 CCTV, Surveillance & Remote Monitoring

Joel White
Joel White

Integrators and installers of video surveillance systems face tasks that are common across both analogue and IP video camera systems. Camera installation, wiring, setup and configuration must be completed for each deployed device in order for the system to recognise and connect to the camera’s video stream.

The growing deployment of IP video systems has added new layers of complexity that the installer must master to be successful. Installers not only have to physically mount, setup and connect the cameras to the recorder, but must also understand the configuration and load balancing of IP networks.

To aid integrators in these new challenges, the best camera manufacturers look beyond simply delivering high quality video capture functionalities. These vendors are also devoted to employing significant resources on product design, software, and accessories to make the entire installation and commissioning process faster and more efficient. Integrators who use these manufacturers’ cameras realise the benefit through higher profitability and a competitive edge in time saved and fewer accessories to purchase.

The best camera manufacturers listen to the voice of customer and the integrators’ perspective to improve on physical installation, power considerations, and configuration of the cameras on the IP network.

Physical installation

Cameras that incorporate multiple installation options into the design of the core product save time and money by enabling faster and easier installation and by reducing or often eliminating the need to purchase mounting accessories or adaptors. A well-designed indoor mini-dome will allow for surface mounting by simply screwing the back plate onto the surface. A smarter design has the hole pattern in the back plate positioned to match common electrical gang boxes so the camera can be screwed directly onto the wiring box. With its back plate removed, the same camera can be flush mounted to a surface using integrated swing out clamps to secure it on locations such as a drop ceiling. In cases where building codes require plenum-rated flush mount installations, a camera can include the adaptor necessary to connect into the wiring conduit to meet the code requirements.

Power supply

All cameras need electrical power and connectivity to the recording system. For IP cameras both these needs can be fulfilled using a PoE (Power over Ethernet) network where only a single RJ-45 cable connection to the camera is necessary. PoE power has two standards – PoE (802.3af) and PoE+ (802.3at). PoE+ delivers higher power and is often used with outdoor cameras that are warmed by heaters as well as most newer indoor HD PTZ cameras that require additional power to run the pan and tilt motors. In certain cases, PoE+ is inadequate and an AC power supply must be used to achieve the lowest operating temperature rating of the camera. It is important to note that the power supply used will directly affect the low temperature ratings of heated outdoor cameras, so the installation environment and camera power/temperature ratings should be carefully considered before deciding on the power supply.

Managing network connectivity

Configuring each IP camera on the network is much different to configuring analogue cameras, as multiple IP cameras are capable of running on the same physical network wire. For example, 50 cameras connected to a single network means the video streams from all the cameras are moving on the same wires simultaneously. In order for the network to distinguish one camera’s video stream data from another, each camera is assigned a unique IP address. Ideally each camera should be named with a common identifier so that it is easy to understand the camera type and location of the camera within the system.

When manufactured, all cameras are given the same default IP address and a unique MAC address. Imagine you are installing 50 cameras, each of which must be named and assigned a unique IP address. The task can be accomplished by opening each camera’s Web user interface and assigning a new IP address. A more efficient way is to use the smart configuration software provided by the manufacturer to manage configuration of multiple cameras automatically. Configuration software will scan and find the connected cameras on the network, batch assign IP addresses, allow for individual camera naming and, if necessary, batch update camera firmware. Well-designed camera configuration software is an indispensable installation and configuration tool.

Cameras that focus on 'installability' will pay dividends in the long run. Time is money so consider using cameras that incorporate features and technology that allow for easier installation and configuration. When comparing camera features, look beyond the high-level specs to understand the whole camera solution. A well thought-out and designed camera can reduce the man-hours necessary for installation, potentially making your operation more cost competitive and profitable.

For more information contact Tyco Security Products, +27 (0)82 566 5274, [email protected], www.tycosecurityproducts.com



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