
4 Connectors
Cameras from SVS-Vistek feature a combined I/O and power supply connector
(Hirose) and a data connector.
4.1 CoaXPress
4.1.1 Protocol description
CoaXPress was established as a standard protocol in machine vision 2009.
The current version documented by Japan Industrial Imaging Association is 1.1.
It is targeted to high bandwidth connections. The CoaXPress standard is scal-
able from 1.25 Gbit/s up to 25 Gbit/s with a maximum distance of more than
200 m.
The standard connector for CoaXPress is a 75Ω DIN 1.0/2.3 connector.
Depending on the desired bit rate, environment and speed you might use 75Ω
coaxial cables like RG11, RG6, RG59 and RG187 (recommended).
SVS-VISTEK uses female connectors on their cameras according to JIIA stand-
ard.
You need cables with male connectors (plugs).
Protocol type is serial and is designed as an end-to-end connection. Forwarding
the data stream to multiple receivers does require additional hardware (pls con-
tact SVS-VISTEK).
SVS-VISTEK cameras are supporting CoaXPress with up to 6.25 Gbit/s per
line. Transmission speeds above this can be managed by operating multiple
CoaXPress lines in parallel. Currently the cameras (depending on the model)
from SVS-VISTEK are supporting up to 4 lines in parallel. All SVS-VISTEK
CoaXPress cameras support the GEN<i>CAM interface.
CoaXPress standard supports camera control and power over CoaXPress
(PoCXP, 24 V@13W). It is recommended to use the frame grabber power sup-
ply over CoaXPress.
4.1.2 Connecting the data cable(s)
You need a CoaXPress frame grabber for connecting the camera to your host
computer.
Before powering on, connect the cables to the camera and the frame grabber.
CXP connectors have a locking mechanism. Always plug and unplug the cable
at the connector, never pull the cable.
If your frame grabber has got less channels than the camera, the data transfer
will not reach the maximum values mentioned in the specifications. If your
frame grabber has more CoaXPress lines than your camera, try to connect the
low channel numbers (0,1,…) first.
You may connect more than 1 camera to a multi-channel frame grabber. Always
connect the CoaXPress data cables before power on!
NOTICE Be careful with the tiny connectors. They slide up neatly and are locking
quite well, but too much force might easily break the connectors.
4 Connectors 19