Panasonic WV-ASC970 - - Manual (Page 6)

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Terms and Definitions
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Video Switch Node
A video switch node is a device or a group of devices that are capable of performing a video switch from any of its
video inputs to any of its video outputs. In the WV-ASC970 based system, there are two types of video switch
nodes: digital switch node and analog switch node.
i-Pro video switch node is a digital switch node which can include i-Pro cameras, i-Pro encoders and decoders,
and network recorders.
Analog video switch node is mainly formed with matrix switch devices, matrix control devices, matrix OSD devices
and matrix digital I/O devices. The system currently supports both SX650 and SX850 switch nodes.
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Video Link
A video link is a connection that can pass video from one video switch node to another. It can only transfer video in
one specified direction.
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Video Path
A video path is a connection between video source and video destination, which consists of one or more video
links.
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Server PC (CPU)
Server PC is a Linux-based server computer with WV-ASC970 system software that manages all the system
resources and system devices within a system domain. It usually refers as a system domain computer. Panasonic
recommend using certain model number described in "Readme" file.
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System Unit
System unit refers to a Server PC.
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System Domain
A system domain is an entity that contains one system unit, up to 64 system controllers, only one digital video
switch node, and only one analog video switch node. The domain is capable of performing system tasks as an
independent entity, or working with other domains to create a distributed network security system. In a WV-ASC970
based system, the system assigns its domain number equal to its unit number.
An analog video switch node is always inside a system domain, while a digital video switch node can be across
more than one domain.