# Re: [Fwd: Re: Problem with Astra 1200s]

Oliver Rauch (oliver.rauch@Wolfsburg.DE)
Sat, 24 Jul 1999 22:57:30 +0200

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Lee Nevo wrote:

> I apologize for sending the attachments, forgot about the charges that
> others occur. I was just being impatient. Won't happen again.

Oh, not such a great problem!
I only say it to everyone who sends big mails so I can keep the
mail-size small! There is no great problem if some people do send
such mails, but if I do not say anything a get a lot of such mails!

> Anyway, back to businees...I disconnected the tape drive internally from
> the controller card. I enabled termination on the card. The kernel
> reports that termination is active. The kernel also reports that the
> card is an Ultra SCSI card, however my documentation does not mention
> that. In any event, I converted the length of my SCSI cable from feet to
> centimeters, and since its a 4' cable, that should be 121.92 cm, so I
> should be under the limit. No luck, same issue.
>
> I guess my next step is to go out and find a better terminator to put on
> the scanner?

Hm.
Is it an active terminator? If no, get one, you need an active one
for an ultra scsi card. It does not help to reduce the speed of the card
because the gradient of the signals is not changed!

Test also the configuration of the scsi card:

- try to reduce speed from 20/40 mhz (ultra/ultrawide) to 10/20 mhz (fast/fastwide)
or 5mhz(asyncronous).
- disable disconnect/reconnect
- disable tagged command queeing

I know you already did this for one scsi id,
if possible , do this for the full card and not only for the scanner device.

If all does not help - do you have the umax scsi card uds-11?
It is a very bad card but for some tests ... (read the umax.faq on my homepage for
more info
about that)!

May be you have a frien wit an ncr53c8xx scsi card or a good adaptec card, could be
worth to try with an other (not ultra) scsi card!

Bye
Oliver

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