Optronis CoaXPress CamPerform Cyclone Series, Руководство пользователя

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2.2 Setting Up System
2.2.1 CoaXPress Standard Overview
CoaXPress is an interface to connect Devices (typically cameras) to Hosts (typically frame grabbers). It combines
the simplicity of coaxial cable with state-of-the-art high-speed serial data technology, allowing up to 12.5 Gbps
data rate per cable, plus device control and power in the same cable.
CoaXPress is a point to point scalable interface. The physical medium between the Device and Host is 75Ω
coaxial cable.
An interface consists of one master connection and optional extension connections, which together form a
link. Each connection is associated with a coax cable. At the Device connections are numbered; 0 for Master,
and 1 to (
n -1) for ( n -1) extension connections as shown in the following figure:
Figure 1: CoaXPress physical topology
Each connection provides the following signaling functions:
•
• High speed serial (usually Device to Host down connection), at up to 12.5 Gbps.
•
• Low speed serial (usually Host to Device up connection), at up to 41.6˙ Mbps.
•
• Power (Host to Device), up to 13W.
A dedicated high speed up connection from the Host to the Device is allowed for high speed triggers and
camera control. This connection does not support power.
The link protocol defines the transfer of triggers, general purpose I/O, control data and high-speed streaming
data over a link, as shown in the following figure:
Figure 2: Signaling connections and data flow