> [EMAIL PROTECTED] wrote:
> > >
> > >If it has a pass thru connector, then either there is a way to enable
> > >termination, or it just happens to work, which would mean
> > you should get a
> > >terminator for it (at any time, it might stop working, or
> > start getting
> > >flaky, without any warning or logic to when and why it does so, in my
> > >experience anyway).
> >
> > ALL SCSI chains MUST be terminated properly.
> >
> > If the chain is very short and only has one device, you can sometimes
> > get away without terminating it because there's not much room for the
> > signals to echo. BUT you will get "mysterious" crashes and hangs and
> > other failures...
>
> Of course. The point I was making is that SOME devices, especially
> scanners, are self terminated. If it doesn't have a pass thru
connector,
> then it HAS to be terminated internally somehow (either it always is,
there
> is a switch to enable, or its automatic). The documentation should
state
> this, if one still has it.
>
> --> Russ
I bought a Umax S-6E scanner (the original subject of this thread) when it
was new, & it came with a pass-through terminator of some sort, but the
docs say *not* to put it on if it was the only device on your external
bus. However, if you do have any others, you should use it, either it the
scanner is the last device, or on whatever is (& BTW there is a further
connector -- 25-pin! just like the SCSI Macs'). Go figure...
I might have mentioned this earlier, but I get the digest. It is also a
known "feature" of the Umax SCSI scanners, at least the early ones, that
you can't have them set to an ID that is already use, even if only on the
other bus.
--
Over,
Jutso
http://pages.ripco.net/~jutso/
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