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<TITLE>sane-devel: Re: SCSI Cable (Some comments and questions)</TITLE>
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<META NAME="Author" CONTENT="Oliver Rauch (oliver.rauch@Wolfsburg.DE)">
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<META NAME="Subject" CONTENT="Re: SCSI Cable (Some comments and questions)">
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<H1>Re: SCSI Cable (Some comments and questions)</H1>
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<STRONG>From:</STRONG> Oliver Rauch (<A HREF="mailto:oliver.rauch@Wolfsburg.DE?Subject=Re:%20SCSI%20Cable%20(Some%20comments%20and%20questions)&In-Reply-To=<38A87B26.6F90D9A6@wolfsburg.de>"><EM>oliver.rauch@Wolfsburg.DE</EM></A>)<BR>
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<STRONG>Date:</STRONG> Mon Feb 14 2000 - 14:01:10 PST
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<LI><STRONG>Next message:</STRONG> <A HREF="0156.html">Oliver Rauch: "Re: 'scanimage -T' ?"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0154.html">Johan Bengtsson: "Epson scanner support"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0139.html">mendes: "Re: SCSI Cable (Some comments and questions)"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0116.html">Bruce Burden: "Re: SCSI Cable"</A>
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mendes wrote:
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<BR>
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<P><EM>> Hello
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</EM><BR>
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<EM>> I have just seen the discussion on the list about SCSI Cable. Although
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</EM><BR>
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<EM>> I am not an expert I find the solution of having different cards from scanners
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</EM><BR>
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<EM>> and disks a good solution. In my setup I had to move the HP Scanjet (Oliver, I
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</EM><BR>
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<EM>> am not using my old Umax T-630, I gave up trying to upgrade the bios) to an
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</EM><BR>
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<EM>> adaptec 2906 and my other devices to a TEKRAM 390F. Only in this way I've got
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</EM><BR>
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<EM>> the scanner working ok. Before that the scanner messed up the whole scsi bus.
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</EM><BR>
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<EM>> Please note that TEKRAM 390F doesn't have an external 50 pin so I had
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</EM><BR>
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<EM>> to buy a 50M-50F and attach to the scsi cable in order to have a "fake" 50F
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</EM><BR>
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<EM>> external connector. It worked, but as I said the scsi bus went crazy.
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</EM><BR>
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<EM>> Question: How does this TERMINATION (passive or active???) works? Does
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</EM><BR>
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<EM>> Scanjet need ones? I am clueless....
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</EM><BR>
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<EM>>
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</EM><BR>
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<P>Both ends of the scsi chain HAVE TO BE termiated.
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<BR>
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<P>Passive termination is done with resistors, active termination is done with
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<BR>
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transistors/opamps.
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<BR>
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<P>If there is only the scanner connected on the scsi bus you may try without termination,
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<BR>
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if you have a scsi disk connected you may loose your filesystem if you try without correct termination.
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<BR>
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<P>Bye
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<BR>
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Oliver
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<BR>
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<P><PRE>
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--
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Homepage: <A HREF="http://www.wolfsburg.de/~rauch">http://www.wolfsburg.de/~rauch</A>
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sane-umax: <A HREF="http://www.wolfsburg.de/~rauch/sane/sane-umax.html">http://www.wolfsburg.de/~rauch/sane/sane-umax.html</A>
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xsane: <A HREF="http://www.wolfsburg.de/~rauch/sane/sane-xsane.html">http://www.wolfsburg.de/~rauch/sane/sane-xsane.html</A>
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E-Mail: mailto:<A HREF="mailto:Oliver.Rauch@Wolfsburg.DE?Subject=Re:%20SCSI%20Cable%20(Some%20comments%20and%20questions)&In-Reply-To=<38A87B26.6F90D9A6@wolfsburg.de>">Oliver.Rauch@Wolfsburg.DE</A>
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<P><P><P><P>--
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Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20SCSI%20Cable%20(Some%20comments%20and%20questions)&In-Reply-To=<38A87B26.6F90D9A6@wolfsburg.de>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0156.html">Oliver Rauch: "Re: 'scanimage -T' ?"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0154.html">Johan Bengtsson: "Epson scanner support"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0139.html">mendes: "Re: SCSI Cable (Some comments and questions)"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0116.html">Bruce Burden: "Re: SCSI Cable"</A>
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<EM>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Tue Feb 15 2000 - 08:59:46 PST</EM>
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