How to get Acer scanner to work with Win 7

September 23, 2011 at 05:37:03
Specs: Windows 7
Acer Scan Premo 1200 ST & Windows 7

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September 23, 2011 at 05:38:09
This is an older scanner that can also scan negatives and transparencies up to 8x10 and is an inexpensive alternative to a newer model. It uses the old Centronic SCSI type connection but can be made to work with Windows 7 and LSI PCI host adapter LSI20329IE Ultra 320 using a VHDCI 68 PIN TO CENTRONICS 50 PIN (CN50) CABLE. I had trouble getting the new host adapter to see the scanner. I purchased a new 6 foot cable and it seems to connect more reliably. I have now purchased a third cable with internal High Byte termination to see if this cable improves Windows’ ability to recognize the scanner further. During my testing I purchased a third party driver called VueScan to replace the old MiraScan driver that came with the scanner. The VueScan install seemed to cause both drivers to work properly under Windows 7 - go figure?

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September 26, 2011 at 12:31:36
Andy again - Just replaced the cable with one that has high bite termination - meaning the cable has internal resistors to terminate eight of the sixteen wires in the cable not used when the host adapter is connected to an old SCSI device, the scanner, that only supports 8 wires.

Both drivers now recognize the scanner instantly. With the other cable without internal high bite termination it took the card a while to see the scanner.

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