mendes wrote:
> Hello
> I have just seen the discussion on the list about SCSI Cable. Although
> I am not an expert I find the solution of having different cards from scanners
> and disks a good solution. In my setup I had to move the HP Scanjet (Oliver, I
> am not using my old Umax T-630, I gave up trying to upgrade the bios) to an
> adaptec 2906 and my other devices to a TEKRAM 390F. Only in this way I've got
> the scanner working ok. Before that the scanner messed up the whole scsi bus.
> Please note that TEKRAM 390F doesn't have an external 50 pin so I had
> to buy a 50M-50F and attach to the scsi cable in order to have a "fake" 50F
> external connector. It worked, but as I said the scsi bus went crazy.
> Question: How does this TERMINATION (passive or active???) works? Does
> Scanjet need ones? I am clueless....
>
Both ends of the scsi chain HAVE TO BE termiated.
Passive termination is done with resistors, active termination is done with
transistors/opamps.
If there is only the scanner connected on the scsi bus you may try without termination,
if you have a scsi disk connected you may loose your filesystem if you try without correct termination.
Bye
Oliver
-- Homepage: http://www.wolfsburg.de/~rauch sane-umax: http://www.wolfsburg.de/~rauch/sane/sane-umax.html xsane: http://www.wolfsburg.de/~rauch/sane/sane-xsane.html E-Mail: mailto:Oliver.Rauch@Wolfsburg.DE-- Source code, list archive, and docs: http://www.mostang.com/sane/ To unsubscribe: echo unsubscribe sane-devel | mail majordomo@mostang.com
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