Technical Solutions

Why am I unable to achieve transfer rates greater than 100 Mbps with the 1394b port on Windows XP when using Image Acquisition Toolbox?

Date Last Modified: Friday, July 17, 2009

Solution ID:		1-3LNN8U
Product:		Data Acquisition Toolbox
Reported in Release:		No Release
Platform:		Windows
Operating System:		Windows XP SP2

 

Subject:

Why am I unable to achieve transfer rates greater than 100 Mbps with the 1394b port on Windows XP when using Image Acquisition Toolbox?

Problem Description:

I have a FireWire camera connected to the 1394b port on my FireWire card. After doing so, I am only able to achieve 100 Mbps transfer rates. As a result, some higher resolution formats or higher frame rates at any resolution are unavailable, both when using the CMU DCAM demo application, as well as Image Acquisition Toolbox.

Solution: The performance of your 1394a or 1394b FireWire devices may be greatly reduced after you update your computer to Microsoft Windows XP Service Pack 2 (SP2). This problem occurs because Windows XP SP2 changes 1394b ports to S100 speed when you upgrade. Microsoft has designed Hotfix 885222 to address this issues. You can find more information about this issue on Microsoft's website: http://support.microsoft.com/kb/885222

 

Related Documents/Files:

• http://www.ptgrey.com/support/kb/index.asp?a=4&q=191
• http://support.microsoft.com/default.aspx?scid=kb;en-us;885222

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