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Users Manual Area Scan Cameras SVSGigE
Page 16
Users Manual –evo1050, evo2050, evo2150, evo4050, evo4070, evo8050 and evo12040
© SVS-VISTEK GmbH
Using Dual GigE channels (2 cables) with a Switch is NOT supported
Only MANAGED (intelligent) switches must be used. Otherwise Mul-
ticast will not work.
Since a GigE camera always needs a single controlling application, there will be only
one master application. That controlling master application has to open a camera in
multicast mode (IP 232.x.x.x for local multicast groups) for allowing other applications
to connect to the same image data stream. Other applications will become listeners to
an existing image data stream. They will not get control access to the camera, how-
ever their eventual packet resend requests will be served in the same way as for the
controlling application.
When using SVCapture as the controlling application, the “Multicast” checkbox has to
be checked in the Device Discovery dialog before opening a camera.
It is important to enter a suitable maximal packet size. This packet size is determined
as the minimum packet size from all intended listeners. When for example all applica-
tions but one have jumbo frames adjusted to 16112 bytes and the one application has
jumbo frames adjusted to 9000 bytes then the minimum (9000) has to be entered in
the above shown dialog.
A multicast data stream can be identified in SVCapture by a change in a camera
view’s title. A multicast group (232.x.x.x) along with the used port will be shown in-
stead of a camera’s MAC that is usually displayed in that place.
Further the camera is operated as usual in the controlling application without any
changes to normal mode.
A listening application will see a hint “MULTICAST” in the “IP address” field of the dis-
covery dialog for a camera that is streaming in multicast mode along with the IP ad-
dress of the multicast group.