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Matrix switches can scale from a small system with a few cameras to an enterprise-class switch
that can support thousands of cameras and hundreds of monitors.
In a large matrix switch environment, the system may be configured with many components,
including:
●
Main CPU bay—A modular system that contains the system processor, power supply, and
several video input and output modules.
●
Video input module—Accepts input from cameras and other video sources.
●
Video output module—Provides outputs to monitors and VCRs.
●
Monitor expansion bay—Provides connectivity to several monitors. Typically required in
deployments with more than 32 monitors and can also accommodate several keyboards.
●
PTZ data distribution unit—Communicates with PTZ cameras typically by using RS-422
data transmission.
The high-level example in Figure 5 shows how a matrix switch system can grow to accommodate
many cameras, monitors, and recording devices. In this design, a centralized monitoring facility
houses all keyboards and CCTV monitors, which requires the cable infrastructure to be routed to a
single location. While this configuration is able to grow to a large number of devices, the cable
infrastructure does not allow video to be viewed from other stations at the facility or from remote
locations.
Figure 5.
Traditional Matrix Switch
Design Guide
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