----------
> From: Warren Early <earlyw@sphinx-group.com>
> To: sane-devel@mostang.com
> Subject: Re: UMAX Astra 1200S lamp question
> Date: Thursday, February 25, 1999 6:58 PM
>
> > > > When I connected power (and nothing else) to the scanner, the
imaging
> > > > lamp came on. When I connected the SCSI cable, the lamp stayed on.
> > > > I've tried SCSI bus resets, scanning images, setting every
available
> > > > option in xscanimage and scanimage, and never has the lamp been
off.
> > > > The lamp is still shining under the scanner cover to this day.
> > >
> > > Yep, for me too.
> >
> > I have a Tamarack 1200C, and according to the docs (I wrote the
> > driver), the lamp cannot be turned off.
> >
> > My guess is that they tried stuff like "turn the lamp off after 10
> > minutes of inactivity" and either decided that it would prolong the
> > life of the lamp, and that it would cost them business in lost sales
> > for replacement lamps, but more likely the extra power-cycles for the
> > lamp would wear it down faster than just leaving it on.
> >
>
> I know that Microtek leaves the lamp on so that the scans remain
> consistent for calibration purposes. A cold tube emits less light and of
a
> different color than one that's fully warmed up.
>
>
>
>
>
> > > > Is this normal? Are the Windows drivers able to turn the lamp off?
> > > > Is the hardware incapable of turning the lamp off? Is it some kind
of
> > > > funky solid-state lamp with a 100K-hour lifetime?
> > >
> > > We can hope. I generally leave the power off except: during
> > > boot time, when the BIOS and OS are looking for the scanner,
> > > and when I'm using it.
> >
> > If you're using Linux, just leave it off, until you need it.
> >
> > #!/bin/sh
> > echo "scsi add-single-device 0 0 $1 0" > /proc/scsi/scsi
> >
> > use this script with the SCSI ID of your scanner as the argument to
> > have it detected when you want to use it....
> >
> > > Well, I can't say it's "normal" or "intended", but I can say
> > > that mine and yours are acting the same way.
> > >
> > > Now, if I could only get SANE to FIND the darn thing. (I have
> > > been less lucky than you in getting SANE to work)
> >
> > Tip: Edit dll.conf, and remove all other backends.
> >
> > Roger.
> >
> > --
> > ** R.E.Wolff@BitWizard.nl ** http://www.BitWizard.nl/ ** +31-15-2137555
**
> > *-- BitWizard writes Linux device drivers for any device you may have!
--*
> > * Never blow in a cat's ear because if you do, usually after three or
*
> > * four times, they will bite your lips! And they don't let go for at
*
> > * least a minute. -- Lisa Coburn, age 9
> >
> > --
> > Source code, list archive, and docs: http://www.mostang.com/sane/
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> >
>
>
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