Dual GigE camera SVS8050 - lost packet

[Jan Henneberger]

Hallo,

I would like to run the SVS8050 camera with labview.

It is a 8MP camera with a frame rate of 21 frames/s.
It is a GigE camera, but with two gigabit Ethernet cable to handle the
high data rate. I use the The Intel PRO/1000 PT Dual Port card.

The two gigabit connection are grouped together by a static link
aggregation.

So finally I have a two Gbit connection.
When I run the camera with labview, the maximum frame rate is about 10 1/s and I get a lot of lost packets, which has to be resend. I changed the packet size to 16000.

In my opinion the problem is that I cannot use the Labview High Performance Driver for the link aggregation connection. Or is there a possibility?

Another thing I am wondering if this cause troubles the Desired Peak Bandwidth.
It is a parameter in the Camera Attributes of the Measurement&Automation Explorer.
The maximum Desired Peak Bandwidth is 1000. But for the dual connection it should be 2000.

How can I run the camera in labview with full speed?
Do I need a special network card from NI?
Are the information clear or are additional information needed?

Thank you for your afford

Jan Henneberger

[SamiBenF]

Hi,

The SVS cameras are provided with a software utility called SVCapture.exe .

Do you get the same troubles in SVCapture as in LabVIEW ?

[Jan Henneberger]

Yes, I have in SVCapture the same problem. If I connect both network cable I can run the camera at full speed, but almost every image get lost.

If I only connect one cable it is working fine, unitl the full bandwith of 1Gbit is reach.

A few days ago it was working in SVCapture totally fine. But now I don't get it running again. I played quite a lot with the packet resend paramters in NI MAX. But I think I return to the standard values again.

I am quite confused where I should start to look for the problem.

Cheers

Jan

[SamiBenF]

After all the modification you have done in camera's settings, I suggest you reset the camera to factory default values before trying anything else.

After that, if you still have the same problem in SVCapture, I suggest you focus on solving it outside of the NI environment first, by contacting the SVS Vistek technical support. There are very good engineers there who are usually quick to reply.

[BlueCheese]

I would suggest lowering your packet size to more than 9k. The newer Intel NICs when used with Intel's drivers don't have their buffers optimized for packet sizes larger than 9k.

You are correct that currently our high-performance driver (replacing Intel's) does not have support for link-aggregation at the moment. You do have to use Intel's driver instead.

Also, Desired Peak Bandwidth set to 1000Mbit is effectively "no throttling," regardless of link-speed.

Eric

[pembrokellc]

I just came across this thread.

I am looking for general application software GUI for the SVS-Vistek cameras for both GigE and CameraLink. The GUI has to least provide an interface to declare multiple ROI's.

A good implementation under LabView or Matlab would be fine. If anyone knows what is on the market please let me know.