Electron Microscope SCSI card/connection problem

microscope

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May 28, 2013
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I'm trying to fix a scanning electron microscope that won't connect to a computer. It connects through a PCI card. At first I suspected a problem with the PCI card drivers, but i've completely re-installed windows and all drivers/programs given in the installation discs, following very clear procedures. However, the computer still shows the electron microscope isn't connected.

I'm starting to think it might be a problem with the PCI card itself. When you start the computer, there's an option to go to SCSI select before Windows boots. However, the only device found is the card itself. I doubt it's a problem with the microscope; it was working fine before the computer had a minor unrelated problem that was fixed.

Anyone have suggestions? I don't know very much about SCSI cards; am I doing something wrong?

Album with images.
http://imgur.com/a/KQpP6#0
 

zyky

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Sep 12, 2006
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Expand the "SCSI and RAID controllers" in device manager and see if the adaptec 2940 is listed there.

And check termination and SCSI ID on the microscope. You'll need termination on the microscope's end, and the SCSI ID cannot also be 7 since your controller is set to that.



 

microscope

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May 28, 2013
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The adaptec 2940 is listed and working. How do you check termination and SCSI ID? I assumed the microscope has automatic termination, since very little was said about the SCSI in the setup manual.
 

zyky

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Do you have a model number for the SEM or a link to manuals online? The pages you have photos of only seem to be general overview of connections and nothing SCSI specific.

There might be some sort of dial ID configuration like
http://rays-place.net/Extras/PCTechGuide/tutorials/images/SCSI/P2-Scanner5.jpg

More common is a up/down selector with numerical display of ID 0..7 like in

http://tk386.com/k2000_pccard/slides/DSC_0820.jpg

But also in that last picture is a couple of DIP switches (red part)
and a bank of those could be used to select SCSI ID and/or termination.

If device doesn't have any termination options, you'll need to terminate with a cable.

Does the SEM have 1 or 2 SCSI ports?

And what is the style of connector? here is a reference picture:

http://jpelectron.com/sample/Electronics/PC-%20SCSI%20-%20Connectors.gif