[sane-devel] Linotype X-ray Scanner

[Oliver Rauch]

The lamp control is done in the scanner.
When the lamp has turned on then the lamp
needs some time to create a stable illumination.
There is no way for the backend to find out if the
lamp just has been turned on or not.

I do not think that the status of the lamp has anything to do with
the freeze of your system. May be you have a problem with the
scsi controller driver or the scsi bus or termination.

Bye
Oliver


Piernicola Oliva schrieb:
> 
> Hi,
> another problem arised...
> Now the images are ok, 12bits deep.
> When the scanner is in standby for more than half an hour (I think) the lamp
> turns off.
> I made some other acquisitions after this (using the same command and the
> same image) and I noticed a different histogram for the same image (say the
> mean vaule was 4000 instead of 2500).This difference appears only for the
> first image acquired after the turning off of the lamp.
> So I waited for another turning off of the lamp and started again a set of
> acquisition... and the computer freezed completely (also the caps-lock light
> didn't work) and I had to reset the computer.
> I made this only one time, so I don't know if it happens every time the lamp
> turns off.
> 
> Do I have to say  in some way to the scanner to turn on the lamp?
> 
> Thank you,
> pier
> 
> --
>     \        name:     Piernicola OLIVA
>    o/\_      address:  Universita' degli Studi di Sassari
>   <\__,\               Struttura Dipartimentale di Matematica e Fisica
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>            \ e-mail:   oliva@uniss.it

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