Instrument Control (GPIB, Serial, VISA, IVI)

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Differences between driver version 2.6 and 2.7?

We have a device that works under DOS using an NI-PC2 with the 2.6 drivers but will not work under DOS or WindowsNT with the 2.7 drivers. The device (using the latter case) receives the command (a little red light comes on to let the user know it is being operated remotely) but just sits there. I'm asserting the EOI (at least I think I am) when I set up the device. Do I have to set up the card to assert the EOI as well? I'm just perplexed as to why it works with the older card and drivers and not the newer card and drivers.

Any advice or help would be appreciated. Thanks!
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According to http://www.ni.com/support/gpib/versions.htm, This GPIB card is only supported under the 2.6 version of the DOS driver. It is not suupported under Windows NT.

The 488.2 version of the board is supported in Windows 9x/ME under the 1.60 version of the Windows driver.

Randy Solomonson
Application Engineer
National Instruments
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