Electronics › Electronics › Difference between digital and analog camera › Hiyah Venkatesh,as I’m not
Hiyah Venkatesh,
as I’m not entirely sure of the precise nature of the ‘monitoring system’ you are looking to apply this to, the possibilities are almost endless.
What most people use is a simple ‘surveillance camera’ which has an analogue output along what is called ‘shot-gun cable’. This is not to say that it goes bang, at least it doesn’t if it’s wired correctly, it is the shape of the cable in that it is two cables joined together that look, in profile, like a shot-gun barrel. One cable carries the power to the camera and has a twin wire core, the other carries the signal from the camera and is a screened lead. It has to be screened so that it does not transmit or pick up electrical noise.
If you do an internet search for these surveillance cameras, you may well find the ebay guide (A Guide To Choosing CCTV Security Camera Systems) which has a lot of useful pointers as to what to look for, depending on your requirements. They have literally thousands of listings from a few dollars to hundreds of dollars, it really depends what you are looking to achieve and in what sort of environment.
I often think when trying to answer questions or repair a piece of broken equipment, that it would be very handy to have a crystal ball in my toolkit. Unfortunately, they seem to be unavailable, or the ones that are, don’t work! Thus I can only make a guess and suggest that you opt for an analogue output and hard-wire it to the monitoring system.
As this is obviously some form of security I cannot expect you to publish here all the details, or the system would be rendered public knowledge and the whole point of CCTV security is that it remains private.
I don’t sell this stuff but I do use it a lot. Not only for security but also I have two cameras in the back of the truck to give me rear vision when reversing, I also have what has become known as a ‘road-cam’ which is a small camcorder that records my journeys in a continuous loop of a few hours duration. If there was some incident that required me to show what happened, such as a collision, it is easy to to just show that video. It also makes for funny clips of motorists doing crazy things that end up on youtube! Having one makes me a better driver as I really don’t want to be in one of those clips myself.
As you can appreciate, the applications are many and really varied. The best way to learn is to find the specification sheets on the internet for as many different devices as possible,.. then shut youself away and read all of them carefully. The way in which you build your system is only limited by your imagination, that is why electronics advaces so fast. There is always a new way to use existing technology and sometimes a small innovation can make a whole new range of products we never thought possible.