kopia lustrzana https://gitlab.com/sane-project/website
164 wiersze
6.5 KiB
HTML
164 wiersze
6.5 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"
|
|
"http://www.w3.org/TR/REC-html40/loose.dtd">
|
|
<HTML>
|
|
<HEAD>
|
|
<TITLE>sane-devel: Re: SCSI Cable</TITLE>
|
|
<META NAME="Author" CONTENT="Rooster (rooster@seaforn.dircon.co.uk)">
|
|
<META NAME="Subject" CONTENT="Re: SCSI Cable">
|
|
</HEAD>
|
|
<BODY BGCOLOR="#FFFFFF" TEXT="#000000">
|
|
<H1>Re: SCSI Cable</H1>
|
|
<!-- received="Tue Feb 15 04:32:08 2000" -->
|
|
<!-- isoreceived="20000215123208" -->
|
|
<!-- sent="Tue, 15 Feb 2000 12:43:23 +0100 (GMT)" -->
|
|
<!-- isosent="20000215114323" -->
|
|
<!-- name="Rooster" -->
|
|
<!-- email="rooster@seaforn.dircon.co.uk" -->
|
|
<!-- subject="Re: SCSI Cable" -->
|
|
<!-- id="Pine.LNX.4.05.10002151230300.23317-100000@seaforn.dircon.co.uk" -->
|
|
<!-- inreplyto="200002141523.KAA30797@benz.tpk.net" -->
|
|
<STRONG>From:</STRONG> Rooster (<A HREF="mailto:rooster@seaforn.dircon.co.uk?Subject=Re:%20SCSI%20Cable&In-Reply-To=<Pine.LNX.4.05.10002151230300.23317-100000@seaforn.dircon.co.uk>"><EM>rooster@seaforn.dircon.co.uk</EM></A>)<BR>
|
|
<STRONG>Date:</STRONG> Tue Feb 15 2000 - 03:43:23 PST
|
|
<P>
|
|
<!-- next="start" -->
|
|
<LI><STRONG>Next message:</STRONG> <A HREF="0152.html">fmmacr: "Re: Microtek E3 with snapshot 20000130 compiled for OS/2: Still no scans"</A>
|
|
<UL>
|
|
<LI><STRONG>Previous message:</STRONG> <A HREF="0150.html">Karl Heinz Kremer: "Re: 'scanimage -T' ?"</A>
|
|
<LI><STRONG>In reply to:</STRONG> <A HREF="0127.html">Irv Thomae: "Re: SCSI Cable"</A>
|
|
<!-- nextthread="start" -->
|
|
<LI><STRONG>Next in thread:</STRONG> <A HREF="0131.html">Oliver Rauch: "Re: SCSI Cable"</A>
|
|
<!-- reply="end" -->
|
|
<LI><STRONG>Messages sorted by:</STRONG>
|
|
<A HREF="date.html#151">[ date ]</A>
|
|
<A HREF="index.html#151">[ thread ]</A>
|
|
<A HREF="subject.html#151">[ subject ]</A>
|
|
<A HREF="author.html#151">[ author ]</A>
|
|
</UL>
|
|
<HR NOSHADE><P>
|
|
<!-- body="start" -->
|
|
<P>
|
|
On Mon, 14 Feb 2000, Irv Thomae wrote:
|
|
<BR>
|
|
<P><EM>> On Mon, 14 Feb 2000 07:00:29 -0800, Andrew McHorney wrote:
|
|
</EM><BR>
|
|
<EM>>
|
|
</EM><BR>
|
|
<EM>> >Well I can get a simple 4 to 6 scsi foot cable for now. When I get my
|
|
</EM><BR>
|
|
<EM>> >computer desk setup, the scanner will be located much closer and then I can
|
|
</EM><BR>
|
|
<EM>> >use a 3 foot cable.
|
|
</EM><BR>
|
|
<EM>> >
|
|
</EM><BR>
|
|
<EM>> >The scanner came with an adaptec controller which is ok, but I would rather
|
|
</EM><BR>
|
|
<EM>> >not waste a slot.
|
|
</EM><BR>
|
|
<EM>> >
|
|
</EM><BR>
|
|
<EM>> >Andrew
|
|
</EM><BR>
|
|
<EM>> >
|
|
</EM><BR>
|
|
<EM>>
|
|
</EM><BR>
|
|
<EM>> Although it's certainly true that a decent SCSI controller can accept a wide
|
|
</EM><BR>
|
|
<EM>> mix of devices insofar as addressing and delivery are concerned, OTOH it's also
|
|
</EM><BR>
|
|
<EM>> true that slow devices can limit bus speed, effectively bringing all down to
|
|
</EM><BR>
|
|
<EM>> the "least common denominator". *That*, IMHO, is a strong argument for using a
|
|
</EM><BR>
|
|
<EM>> distinct (low-speed, cheap) controller for your scanner. Also, with a lower
|
|
</EM><BR>
|
|
<EM>> maximum speed, the separate bus will more easily tolerate the 6-foot cable
|
|
</EM><BR>
|
|
<EM>> length.
|
|
</EM><BR>
|
|
<EM>> Didn't an el-cheapo controller come with the scanner? If not, check
|
|
</EM><BR>
|
|
<EM>> misc.forsale.whatever , a likely place to find people with extra hardware they
|
|
</EM><BR>
|
|
<EM>> don't happen to want....
|
|
</EM><BR>
|
|
<P><P>This is in fact the real nub of the matter. Mixing slow devices and fast
|
|
<BR>
|
|
devices on the same bus is really going to cause more problems than it is
|
|
<BR>
|
|
worth. As far as I know the majority of scsi scanner don't allow the
|
|
<BR>
|
|
DISCONNET command for suspending data transfers while other devices access
|
|
<BR>
|
|
the bus. That coupled with the higher tolerances you'll need for a 6ft
|
|
<BR>
|
|
long termination (ie completely active and all devices supplying power, if
|
|
<BR>
|
|
they can) then it really becomes a headache.
|
|
<BR>
|
|
I am sure there are plenty of SCSI gurus out there who can explain
|
|
<BR>
|
|
to you the limitations of bandwidth between fast busses and slow & fast
|
|
<BR>
|
|
devices. Personally I have gone the whole hog and use a 4 channel
|
|
<BR>
|
|
(APB3980UA) controller and seperate out HD's , TAPE/DAT's, CDROM/CDRW's
|
|
<BR>
|
|
and the
|
|
<BR>
|
|
scanners (I have 2) onto seperate channels grouping the slowest together
|
|
<BR>
|
|
and the fastest to make the maximum use of the available bandwidth. Oh
|
|
<BR>
|
|
incidentally before I got this controiller I had the trusty ol' 1542CP and
|
|
<BR>
|
|
a APB960 working together. It ran like a dream :)
|
|
<BR>
|
|
<P> Hope this helps, you never know it might even work out cheaper
|
|
<BR>
|
|
than an exotic 68->25 cable ;)
|
|
<BR>
|
|
<P><P>Rooster - A friend.
|
|
<BR>
|
|
<P>"Anyone's friend in particular or just generally well disposed to people?"
|
|
<BR>
|
|
<P> HHGTTG.
|
|
<BR>
|
|
<P>CUT - Campaign for Unmetered Telecomunications:
|
|
<BR>
|
|
Bring the best to all affordably. <A HREF="http://www.unmetered.org.uk">http://www.unmetered.org.uk</A>
|
|
<BR>
|
|
<P><P><PRE>
|
|
--
|
|
Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
|
|
To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20SCSI%20Cable&In-Reply-To=<Pine.LNX.4.05.10002151230300.23317-100000@seaforn.dircon.co.uk>">majordomo@mostang.com</A>
|
|
</PRE>
|
|
<P><!-- body="end" -->
|
|
<HR NOSHADE>
|
|
<UL>
|
|
<!-- next="start" -->
|
|
<LI><STRONG>Next message:</STRONG> <A HREF="0152.html">fmmacr: "Re: Microtek E3 with snapshot 20000130 compiled for OS/2: Still no scans"</A>
|
|
<LI><STRONG>Previous message:</STRONG> <A HREF="0150.html">Karl Heinz Kremer: "Re: 'scanimage -T' ?"</A>
|
|
<LI><STRONG>In reply to:</STRONG> <A HREF="0127.html">Irv Thomae: "Re: SCSI Cable"</A>
|
|
<!-- nextthread="start" -->
|
|
<LI><STRONG>Next in thread:</STRONG> <A HREF="0131.html">Oliver Rauch: "Re: SCSI Cable"</A>
|
|
<!-- reply="end" -->
|
|
<LI><STRONG>Messages sorted by:</STRONG>
|
|
<A HREF="date.html#151">[ date ]</A>
|
|
<A HREF="index.html#151">[ thread ]</A>
|
|
<A HREF="subject.html#151">[ subject ]</A>
|
|
<A HREF="author.html#151">[ author ]</A>
|
|
</UL>
|
|
<!-- trailer="footer" -->
|
|
<HR NOSHADE>
|
|
<P>
|
|
<SMALL>
|
|
<EM>
|
|
This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
|
|
: <EM>Tue Feb 15 2000 - 04:33:40 PST</EM>
|
|
</EM>
|
|
</SMALL>
|
|
</BODY>
|
|
</HTML>
|