[filmscanners] RE: Which SCSI Card for SS4000

["Thomas Maugham" <TMaugham@yahoo.com>]

You're correct, of course, and my SCSI card is device 7 (the maximum) thus
auto termination is working.  My CD burner (internal) is device 2, my
external JAZ and ZIP drives are 4 and 5 repectively, my SS4000 is 6 and my
flatbed scanner (last physical device on the chain) is 3 so all is well (at
least for now!!!) in SCSI Land!  The termination switch on the SS4000 was
set to OFF previously and, of course, now it still is. With the exception of
the flatbed scanner, all the other devices have been up and running since
last Christmas and there haven't been any problems.  Adding the flatbed
scanner was simple and everything else still works.

But just to be safe, at each full moon I sacriface a goat or two to
hopefully keep the SCSI Gods appeased!

Thanks for the good information, it confirms that my thinking is correct.

Tom

-----Original Message-----
From: filmscanners_owner@halftone.co.uk
[mailto:filmscanners_owner@halftone.co.uk]On Behalf Of Austin Franklin
Sent: Monday, September 09, 2002 8:00 PM
To: TMaugham@yahoo.com
Subject: [filmscanners] RE: Which SCSI Card for SS4000


Hi Tom,

> Actually my SCSI card has automatic termination so I use that and
> thus don't
> have to worry about having a terminator or the termination switch
> on my last
> device.

I think you're misunderstanding what "automatic termination" means.
Automatic termination, with respect to your SCSI card, is only for the SCSI
card.  If the SCSI card is the last thing on one end of the cable, it'll
detect it, and provide termination.  If your SCSI card is in the middle of
the SCSI chain, it'll disable the termination on the card.  That has nothing
to do with the devices out on the cable(s).  SCSI busses need to be
terminated at BOTH ends.

> My last device was my SS4000 but over the weekend I added an HP
> flatbed scanner which is now the last device. I control both
> through VueScan
> and they work great.

You should make sure the termination is OFF on the SS4k, and ON with the HP
flatbed.  SCSI problems can crop up months later, when temperature changes,
when the phase of the moon changes...if you don't have the SCSI termination
set correctly.  Unfortunately, it's one of the things that's really simple
to do, but for some reason, it causes so many problems.

Regards,

Austin

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