Have you ever wondered why Auto Iris cameras seem to go out of focus at night. Many installers have had to return to the job site at night and reset the focus of a camera to solve this problem.
The purpose of the Video Continuity Alarm System is to provide an unambiguous indication of a video facility failure. Current alarm systems cannot distinguish between a transmission facility failure and the video signal being turned off or disconnected at the source.
In the past, CCTV cameras could be counted on to have proper 75 Ohm source impedances, but recently there have been a rash of cameras showing up on the market that do not have a 75 Ohm source impedance. In fact they exhibit an almost
FM SYSTEMS INC. has developed a new measurement technology in the CM-1 CAMERA MASTER. This meter displays video SYNC. amplitude (Video Level), White amplitude (Iris Setting), Composite amplitude (Video Peak to Peak Level), and Color Burst amplitude (Slope Equalization) in I.R.E. Units, as well as
