The quality of a CCTV picture basically depends on the number of “lines” the camera can delineate and the number of “lines” the DVR can store and the number of “lines” the monitor can display. The component with the lowest “lines” capability thus sets the
The Signal-to-Noise Ratio specification sometimes noted as “S/N Ratio”, “SNR”, or just “S/N” for cameras, amplifiers, and wireless equipment is sometimes overlooked and miss-understood. The S/N Ratio notation will show up in many specification sheets for the equipment in a CCTV system, so it must
The NTSC video signal format was originally devised to enable transmission of a good quality picture and the various special pulses necessary to synchronize the received picture with the transmitted picture.
Basically – Because your subscribers expect it! They are so used to their music and movies being in stereo, that if their TV programming is NOT in stereo – something seems missing. With more and more people investing “big money” into sophisticated Surround Sound systems,
Complex telemetering, control, and supervisory systems ordinarily comprize a multitude of subsystems. Frequently, the entire system is controlled and/or maintained by two or more administrative entities. Thus, the interfaces between the various subsystems may involve administrative as well as electrical and mechanical considerations. It is