Pelco System 9760 manual Video Signal Flow through the Matrix Bay

VIDEO INPUT CARD

￿16x16 CROSSPOINT

￿INPUT BUFFER

￿VIDEO OUTPUT BUS

REAR PANEL VIDEO INPUT CARD

￿PATH TO VIDEO CARD AND TO DOWNFRAME CONNECTOR

￿VIDEO SIGNAL IN

￿SIGNAL ON BACKPLANE ON

WAY TO VIDEO OUTPUT CARD

￿OUTPUT TITLING MODULE

￿

VIDEO

SIGNAL

OUT

VIDEO OUTPUT CARD	REAR PANEL
	BNC CARD

Figure 44. Video Signal Flow through the Matrix Bay

As illustrated in Figure 44, a video signal enters the matrix bay through the rear panel input card where it is terminated with 75 ohms. The signal then proceeds to the CM9760-VCC video input card via the input buffer and is then directed to the 16 x 16 crosspoint switch. Operation of the crosspoint switch is controlled by the CM9760-VMC video output card.

The signal leaves the video input card and is sent to the video output card by way of the video bus. When received by the video output card, the signal is processed by the CM9760-VMM video output module where the DC level of the signal is restored and the titling message is inserted. The edited video signal leaves the matrix bay through the rear panel output card.

The video signal path is controlled by the microprocessor located on the video output card. The video output card has full control of all video input cards. The number of inputs can vary from 16 to 256 in 16-input increments.

The matrix bay can be used as a standalone routing switcher or it can be connected to other matrix bays to create a larger system.

90 C1572M (9/05)