[ale] UPS/Scanner

[Michael Morris]

If the AVA-1502E ISA-to-SCSI host adapter will not work, do you think it
is possible to use the SCSI port from my SoundBlaster 16 sound card
which includes a SCSI port?

Stephen G Lewis wrote:
> 
> > On Wednesday, January 29, 1997 4:15 PM Micheal Morris <mjm at avana.net> wrote:
> > ...
> > Also, has anyone hooked a Microtek E3 scanner to their system. It comes
> > with an Adaptec 1502E ISA SCSI card (make by Adaptec for Microtek). I
> > would like to hook-up this scanner and a SCSI Zip drive from the
> > supplied SCSI card. Are there any tricks to setting this up or special
> > scanning software that I will need?
> 
> ----
> I have the same scanner, and it came with the same card.  I haven't tried to use it
> with Linux yet, but I'm reasonably sure that you will have nothing but trouble trying
> to use the supplied SCSI card with anything but the scanner.  To quote the docs
> that came with my card:
>    The AVA-1502E ISA-to-SCSI host adapter is ... for connecting a single, nonbootable
>    external SCSI device to your PC.
>    The AVA-1502E host adapter supports 2.0 Mbytes/sec asynchronous and 5.0
>    Mbytes/sec synchronous SCSI data transfer rates.
> A "Real" SCSI card supports upto seven devices at 10 Mbytes/sec.  Fast-and-wide
> SCSI supports even faster data rates.  The 1502 is a cheap card with a non-standard
> DB-25 connector and slow speed designed as an interface to the slow SCSI port on
> the scanner.  Normal SCSI connectors are either a 50-pin Centronics-style (sort of a
> long printer port) or a sub-miniture DB-50 (much smaller, more closely packed pins
> than a standard RS-232 connector).  You would have little luck setting up your
> proposed system under DOS, much less Linux.
> 
> I use an Adaptec AH-2940 on my system with the Microtek E3 scanner, a NEC
> 4xi CD-ROM, and a HP JetStore 5000 4mm DAT drive.  I have also successfully
> used an Adaptec AH-1520.  Both of these cards have worked well for me in Linux,
> DOS, and Windows.  I believe that there are some less expensive cards that will
> work as well, but I don't have any experience with any others.
> 
> The Microtek scanner can only work at a data rate of 5Mbytes/sec.  The AH-1520
> can only opperate at one speed with all devices, so to use it with the scanner, I
> had to slow it down to half speed for everything.  The AH-2940 can be configured
> to communicate at different rates to different devices, so it can slow down when
> talking to the scanner, yet talk to the CD-ROM and tape drive at the full 10
> Mbyte/sec rate.

-- 
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 |                      Michael Morris                            |
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