Frequently Asked Questions

Here you will find all the frequently asked questions that we have been asked over the last few years from how do you know if you have a digital aerial to how do i re-tune my TV. Yes we will try to answer all your question.

Can you explain how motion detected recording works?2020-11-19T17:58:17+00:00

How does motion detection work with CCTV cameras and systems

Motion detected recording is a feature on all our DVR recorders. The DVR monitors camera images and decides when it thinks there is movement. To do this the DVR looks at individual image frames and compares them to the previous one. If it sees differences then motion is assumed to have taken place. It is the DVR not the cameras which is looking for movement.

A DVR isn’t as intelligent as you or I and can’t differentiate between background movement, changes in light and someone coming to break into your property. To help minimise false triggers it is possible to limit where on the screen the DVR looks for movement and limit this to a small area or a number of areas. You don’t have to use the full screen. You can set the trigger area using the set up menu on the DVR, you can also set the trigger area remotely if the DVR is connected to your local network / the internet.

Some people only record footage when motion is detected in an attempt to extend the time footage is stored. We are not big fans of doing this. We would rather see motion triggering being used to create bookmarks within 24/7 recording rather than the sole means of capturing footage. Use it to identify which sections might be important but still have constant footage either side of the trigger.

Systems which use motion triggering as the sole method of recording are usually trying to compensate for too little memory. We recommend allowing 250GB of hard drive space per camera on SD systems, 500GB per camera on HD systems. See our guide to hard drives.

Can you explain how Infrared day night cameras work?2020-11-17T22:02:24+00:00

The ability to film in low light conditions or even complete darkness is essential for many CCTV applications. Part of the that ability is down to using the right electronics which are sensitive enough to work in low light, the other tool used is infra red or IR lighting. We have a guide to infra red in our camera buying guide.

Infra red light isn’t visible to the human eye but CCTV cameras switch to black and white as light levels fall and can film the IR light spectrum. This means that to the camera its like shining a torch. IR has to bounce off something but providing there is a hard surface to reflect the infra red your camera is able to see in the dark.

Previously cameras had separate infra red light lamps bolted onto the side of their housings. It made the whole unit very large and industrial looking. In more recent times cameras have been designed with IR lighting built into them. This greatly reduces their overall size and visual impact. It also reduces cost when compared to modular cameras using separate lighting units.

Many people selling CCTV cameras describe them in terms of infra red range. Do not confuse this with the optical range of the camera or the distance at which a camera can record detail. That is determined by the lens. Wider angle lenses will have a shorter optical range, more telephoto lenses a longer range. The IR range is a largely immaterial figure, often made up and is supposed to represent the distance at which the camera’s infra red can be detected. In reality the ability of a camera is a combination of the lens, how powerful the IR is and how sensitive the electronics are.

Something you might see mentioned is an IR cut filter. This is a mecanical filter which moves in front of the camera lens during the daytime. The filter is designed to improve colour rendition during daylight filming. Electronic adjustments can also me made to the camera to improve colour representation.

Why does my TV aerial not work?2020-10-18T20:09:22+00:00

First check that your TV is set to the correct Source or Input, try changing the Source or Input to AV, TV, Digital TV or DTV if you haven’t already. If your “No Signal” message is not due to incorrect Source or Input being selected, then it’s most likely caused by a set up or antenna fault.

Are loft TV aerials any good?2020-10-18T20:07:57+00:00

Aerials do work fine in lofts, but the task should be taken with caution. First things first, advice on a good loft aerial. No such thing in my opinion other than whether it can with stand the outside weather or not. … The foil lining actually reflects the signal so it will never make it to the aerial

Do smart TVs need WiFi?2020-10-18T20:06:13+00:00

A Smart TV can be used extensively without an internet connection; however, if you’re looking to access more advanced features, you may want a standard model. An internet connection is required to use most of the “Smart” features on your TV.

Do I need an aerial for Freeview?2020-10-18T20:03:58+00:00

Yes, you need an aerial to receive Freeview on TV. If you already have an aerial, make sure the cables are undamaged and connected to the aerial point in your home. The aerial needs to be securely plugged into the socket in the back of your Freeview TV or recorder.

Do smart tvs need a TV aerial?2020-10-18T20:02:21+00:00

No smart TVs don’t need a outdoor aerial but, you will not pick up any local stations without an aerial. Since it is a smart TV it should have internet TV services built in. So in short, you will not need an aerial, unless you want to watch live TV in your area.

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