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<TITLE>sane-devel: Re: Mustek 600IICD DTC3181E or 53c810</TITLE>
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<META NAME="Author" CONTENT="Ingo Wilken (Ingo.Wilken@Informatik.Uni-Oldenburg.DE)">
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<META NAME="Subject" CONTENT="Re: Mustek 600IICD DTC3181E or 53c810">
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<H1>Re: Mustek 600IICD DTC3181E or 53c810</H1>
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<!-- received="Sun Sep 17 14:29:16 2000" -->
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<!-- isosent="20000917213913" -->
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<!-- name="Ingo Wilken" -->
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<!-- email="Ingo.Wilken@Informatik.Uni-Oldenburg.DE" -->
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<!-- subject="Re: Mustek 600IICD DTC3181E or 53c810" -->
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<STRONG>From:</STRONG> Ingo Wilken (<A HREF="mailto:Ingo.Wilken@Informatik.Uni-Oldenburg.DE?Subject=Re:%20Mustek%20600IICD%20DTC3181E%20or%2053c810&In-Reply-To=<E13am9Z-00057w-00@petersfehn.Informatik.Uni-Oldenburg.DE>"><EM>Ingo.Wilken@Informatik.Uni-Oldenburg.DE</EM></A>)<BR>
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<STRONG>Date:</STRONG> Sun Sep 17 2000 - 14:39:13 PDT
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<LI><STRONG>Previous message:</STRONG> <A HREF="0165.html">Ingo Wilken: "Re: scanimage always connects to /dev/video"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0157.html">Dario Abatianni: "Mustek 600IICD DTC3181E or 53c810"</A>
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<EM>> Controller that is equipped with the 53c810 chip. I always read that this
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</EM><BR>
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<EM>> card was a good choice to use for scanning, but I can't get it to work
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</EM><BR>
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<EM>> properly. I can get linux to detect the card, and a CD writer attached to the
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</EM><BR>
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<EM>> internal bus works without a problem. But as soon as I connect the scanner to
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</EM><BR>
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<EM>> the 50 pin external connector with a 50 - 50 SCSI II cable, nothing works
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</EM><BR>
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<EM>> anymore. The termination jumper on the card doesn't help. The scsi driver
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</EM><BR>
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<EM>> recognizes the scanner as "QALLEP" instead of "SCANNER" and it reports a
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</EM><BR>
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<EM>> parity error. Is there anything I can do?
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</EM><BR>
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<P>Parity errors are typical for a bus with improper termination or too long
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<BR>
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cables. Your 53c810 operates at 10MHz Fast-SCSI by default, so the sum
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<BR>
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of _all_ cables (including hidden stub cables inside external SCSI boxes)
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<BR>
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should be 3 meters maximum. You also need active termination on both ends.
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<BR>
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It might work with passive termination, but don't count on it. In your
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<BR>
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case, the CD writer and the scanner must both be terminated, and the SCSI
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<BR>
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adapter not. CD writers usually have internal terminators that are
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<BR>
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activated by a jumper. The scanner most likely has no terminator built
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<BR>
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in, so you have to buy one for the second connector (25 pin) on it, or a
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<BR>
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pass-through terminator for the first (50 pin) connector. Both kinds
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<BR>
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cost about $5-$10 (I don't know the prices in the US. I pay about 10 DM
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<BR>
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here in Germany at a large electronics store. Computer stores usually
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<BR>
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charge 25-30 DM.) If your bus still works unreliable after fixing all
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<BR>
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that, set it to operate at 5MHz asynchronous (ncr53c8xx=sync:255).
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<BR>
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<P>Regards,
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<BR>
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Ingo
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<BR>
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<P><PRE>
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--
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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:%20Mustek%20600IICD%20DTC3181E%20or%2053c810&In-Reply-To=<E13am9Z-00057w-00@petersfehn.Informatik.Uni-Oldenburg.DE>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0167.html">Ivo: "Re: SANE on Linux/x86"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0165.html">Ingo Wilken: "Re: scanimage always connects to /dev/video"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0157.html">Dario Abatianni: "Mustek 600IICD DTC3181E or 53c810"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0174.html">Dario Abatianni: "Re: Mustek 600IICD DTC3181E or 53c810"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0172.html">abel deuring: "Re: Mustek 600IICD DTC3181E or 53c810"</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>Sun Sep 17 2000 - 14:30:03 PDT</EM>
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