What are the comparative advantages of AM, FM and Digital video transmission technologies?
There is some confusion in the marketplace as which technology is most appropriate for different applications. While there is a lot of marketing hype about digital technology the fact remains that for many applications AM offers very adequate performance at extremely competitive pricing. The following attempts to give a flavour of the trade offs between the main technologies available today. Please contact us if you need any technical advice. AM AM is very simple technology which can provide extremely good performance for many situations. It is easy to get wide bandwidths (at least 15MHz for our OSD381/383 pair, much more for some specialty products) without excessive circuit complexity. Also, over low optical loss budgets typical of most security type CCTV which only occasionally operates over more than 2 to 3km, the signal-to-noise ratio attainable with AM can be very good. This does degrade from some maximum value (typically 55 to 70dB measured over a short fiber length) with increa
