Analogue Vs. IP Cameras

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Analogue Vs. IP Cameras

Comments (0) Posted by: Century on May 30th, 2014 @ 10:11 AM
Tagged with: Analogue CCTV CCTV System IP Cameras maintenance Safety Security security system Video Entry

When looking for a CCTV Security System for your home or your business, one of the main decisions you need to make is whether to go with an IP or Analogue System. There are many differences between the two, yet the main difference is the way in which the video signal is delivered.

Analogue Cameras turn the video signal into a format that can be received by televisions and monitors. IP Cameras however (also known as an IP Network Camera) digitalize the video signal using a specialised encoder, which contains an onboard web server.

At Century Electronic Security Ltd, we can advise and guide you to chose the best system to meet your specific home or business requirements.

Analogue Cameras

The advantages:

  • The Installation and the cameras themselves are a lot cheaper than IP Cameras (however, research shows that IP prices are continually lowering)
  • Almost every Analogue CCTV Camera will plug into any DVR, allowing you to easily customise and upgrade your system whenever.
  • They require very little maintenance, although we do strongly recommend an annual service to be taken out by a qualified engineer, who will check the complete system thoroughly to prevent any potential faults from occurring.
  • Analogues can also perform better in low light and darkness. This is because most use either a CCD image sensor or Infra-Red, allowing cameras to record images even if they are in complete darkness.

The disadvantages: 

  • Analogue Cameras can only produce a maximum of 700TVL (which is equivalent to around 0.4 megapixels)
  • They can't cover large distances, so this will require more cameras. (Not only this, but getting cameras to work over broad ranges is proved quite difficult)
  • Many basic Analogue Cameras lack some of the more advanced features such as digital zoom or tilting.
  • The signals are less secure and can be intercepted or viewed by anyone with access to the cabling. 

IP Cameras

The advantages:

  • IP Cameras can range from 1.3 megapixels to 8 megapixels and this resolution is retained by the NVR (meaning that you will see the same level of play back from your recorded footage)
  • They can cover a much wider area than a standard Analogue Camera (a single megapixel camera can often cover the same area as up to four Analogue Cameras)!
  • The main advantage to an IP Camera is the ability it has to add on cameras by plugging into any network connection.
  • They can be simply wired into the nearest network switch where it uses the existing network infrastructure to take the signals back to the DVR.
  • The IP Camera has encryption built into them, providing for a more secure network. Interference is also not a problem with any IP based model

The disadvantages:

  • Because of the additional technology that is built into each camera, the cost is generally higher. 
  • They deliver great megapixel resolution, but do not handle low light well. However, if needed, separate IR Illuminators can be added onto the camera (again, at another cost)
  • An IP megapixel surveillance system is set up specifically to work with the network protocol it is designed for, meaning different IP Cameras and NVR brands may not be compatible.




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