Sony ISSUE 3 manual Video Switching and Multiplexing, Switchers

Video Switching and Multiplexing

If a system consists of a single camera and monitor, then a switching device will not be required. It would not, of course, be practical or desirable in a multi-camera system to have a monitor for every camera. In these cases, a switcher will enable the video signal from several cameras to be viewed on just one monitor.

Video Camera 1	Video OUT				Time Lapse VCR
				Video OUT	(ex. SVT-L230P)
	(coaxial cable)	Video INPUT		Video IN
		1 to 16
			Rec	SW OUT
			OUT	PB	Alarm IN
				IN
		YS-DX316P/	Alarm OUT
		DX216E		Mon 1 OUT
				Colour Video Monitor
	Video OUT				(ex. SSM-20N5E)
Video Camera 16	(coaxial cable)
				Mon 2 OUT
				Colour Video Monitor
					(ex. SSM-20N5E)

Switchers

Manual switchers are the most basic form. Here, the operator selects the camera they wish to view. Automatic switchers are the most popular versions. These run a sequence of displays in the order that the operator selects. The operator can also hold one particular camera if he wishes to observe some relevant activity, can skip channels if they do not at that time require monitoring, and adjust the dwell time for each camera. Automatic switchers also normally have an alarm programming option which can override any manual settings.

For more information contact the Sony Business Information Centre: 01932 816340

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