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naveen
March 5, 2014, 08:21:18
Hi,
I am using DFK 23F618 firewire 800 model camera when i set FPS 90 or 120,It is flickering in IC capture.Please let me know how to avoid the flickering at high FPS.

Thanks,
Naveen

Stefan Geissler
March 5, 2014, 08:40:39
Hi

I suppose, you mean, the images are bright and dark.

In this case, please use a flicker free light source. What you see, is the flickering of your light source. If you have daylight, then you wont see flicker.

Usually, I suggest to use longer exposure times, so you expose over the complete bright and dark phases of your light source, but at 90 and 120 fps this is not possible.

naveen
March 5, 2014, 08:59:13
Hi ,
I didn't use any lighting,In daylight,it's flickering.Please help me to come out of this issue.

Thanks,
Naveen

Stefan Geissler
March 5, 2014, 09:12:31
In this situation, please describe "flickering". I do not know, what you mean by this. Maybe you have an image?

naveen
March 5, 2014, 11:02:53
Hi,
I have attached a video link which describes our issue. Please help me to come out of this issue.

http://www.dailymotion.com/video/x1ero7m_flickering-issue_tech

Note:Without light also we are getting same issue.

thanks,
Naveen

Stefan Geissler
March 5, 2014, 12:32:32
Hello Naveen,

this is damaged images, caused by interrupted image data transfer.

You may try this:
http://www.theimagingsourceforums.com/faq.php?faq=ic_camerahandling#faq_ic_pismusb

It helped for FireWire 400 cameras in the past too.

Which 1394b controller chip do you use? I used a Texas Instruments.

naveen
March 7, 2014, 07:07:17
Hi,
I am using Texas instrument.I have tried everything from this link( http://www.theimagingsourceforums.co...faq_ic_pismusb).
It doesn't resolve my issue,I found one more issue,I am getting maximum 15fps in Windows Xp SP3.I couldn't get 120 fps in XP.
I don't know why its showing 120fps in win7 and 15fps in XP.
1677

Stefan Geissler
March 7, 2014, 09:38:43
Hi Naveen,

the camera slows down, if a 400mBit Controller is in use only. However, I would expect the camera run with 60 fps at least. Which driver version do you use?

naveen
March 8, 2014, 07:15:42
Hi ,
I am using following drivers
v5.0.13.327 Device Driver for The Imaging Source FireWire 800 Cameras,but i am getting 15fps in XP even though i am using i5 processor(higher configuration system).Kindly do the needful.

Stefan Geissler
March 10, 2014, 09:02:36
Hi Naveen,

it mus be something with your computer. Which computer model do you use? Which driver is installed for the IEEE Hostcontroller? It should be the standard Microsoft one.

Also:
You may try this:
Please refer to http://support.microsoft.com/kb/885222
The topic about the SID Speeds may is the interesting point. However, it should not limit the list of available frame rates in the camera.

Stefan Geissler
March 10, 2014, 11:40:19
Hello Naveen,

I had a discussion with the camera engineer.

If the DFK 23F618 shows a maximum frame rate of 15, then it runs in S100 mode, which means, your FireWire controller runs with 100mBit only.

As I posted above, have a look on the SID speeds, as shown in the Microsoft Hotfix documentation.

However, this is not all. If you want to run the camera with full 120 fps in Windows XP SP3, you must exchange the FireWire controller driver, with the one, that was provided with Windows XP SP1. This is an issue, created by Microsoft.