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<HTML>
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<TITLE>sane-st400.5</TITLE>
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<BODY BGCOLOR=#FFFFFF TEXT=#000000><H1 ALIGN=CENTER><IMG SRC="/images/sane.png" HEIGHT=117 WIDTH=346></H1>
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<H1>sane-st400.5</H1>
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<HR>
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<PRE>
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<!-- Manpage converted by man2html 3.0.1 -->
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<B><A HREF="sane-st400.5.html">sane-st400(5)</A></B> SANE Scanner Access Now Easy <B><A HREF="sane-st400.5.html">sane-st400(5)</A></B>
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</PRE>
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<H2>NAME</H2><PRE>
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sane-st400 - SANE backend for Siemens ST/Highscan flatbed scanners
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</PRE>
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<H2>DESCRIPTION</H2><PRE>
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The <B>sane-st400</B> library implements a SANE (Scanner Access Now Easy)
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backend that provides access to Siemens ST400 flatbed scanners and com-
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patibles. At present, the following scanners are supported by this
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backend:
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Siemens ST400 (6 bit gray scale)
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Siemens ST800 (6 bit gray scale)
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The driver supports line art and gray scans up to 8bpp.
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The Siemens ST/Highscan series includes several more models, e.g. the
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ST300 and ST600. If you own one of these scanners, or a scanner other
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than the ones listed above that works with this backend, please let us
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know by sending the scanner's model name, SCSI ID, and firmware revi-
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sion to <I>sane-devel@alioth-lists.debian.net</I>. Have a look at
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<I>http://www.sane-project.org/mailing-lists.html</I> concerning subscription
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to sane-devel.
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</PRE>
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<H2>DEVICE NAMES</H2><PRE>
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This backend expects device names of the form:
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<I>special</I>
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Where <I>special</I> is the path-name for the special device that corresponds
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to a SCSI scanner. For SCSI scanners, the special device name must be a
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generic SCSI device or a symlink to such a device. Under Linux, such a
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device name could be <I>/dev/sga</I> or <I>/dev/sge</I>, for example. See
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<B><A HREF="sane-scsi.5.html">sane-scsi(5)</A></B> for details.
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</PRE>
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<H2>CONFIGURATION</H2><PRE>
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The contents of the <I>st400.conf</I> file is a list of device names that cor-
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respond to Siemens scanners. Empty lines and lines starting with a
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hash mark (#) are ignored. A sample configuration file is shown below:
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/dev/scanner
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# this is a comment
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/dev/sge
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The default configuration file that is distributed with SANE looks like
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this:
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scsi SIEMENS "ST 400" Scanner * * 3 0
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In this configuration, the driver can only access the ST400 model at
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SCSI ID 3 LUN 0 (see section <B>BUGS</B> below for the reason). To use the
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driver with other scanner models, add an appropriate line to the con-
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figuration file. For example, to use it with an ST800 at SCSI ID 3 LUN
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0, add the line:
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scsi SIEMENS "ST 800" Scanner * * 3 0
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</PRE>
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<H2>FILES</H2><PRE>
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<I>/usr/local/etc/sane.d/st400.conf</I>
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The backend configuration file (see also description of
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<B>SANE_CONFIG_DIR</B> below).
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<I>/usr/local/lib/sane/libsane-st400.a</I>
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The static library implementing this backend.
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<I>/usr/local/lib/sane/libsane-st400.so</I>
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The shared library implementing this backend (present on systems
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that support dynamic loading).
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</PRE>
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<H2>ENVIRONMENT</H2><PRE>
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<B>SANE_CONFIG_DIR</B>
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This environment variable specifies the list of directories that
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may contain the configuration file. On *NIX systems, the direc-
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tories are separated by a colon (`:'), under OS/2, they are sep-
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arated by a semi-colon (`;'). If this variable is not set, the
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configuration file is searched in two default directories:
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first, the current working directory (".") and then in
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<I>/usr/local/etc/sane.d</I>. If the value of the environment variable
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ends with the directory separator character, then the default
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directories are searched after the explicitly specified directo-
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ries. For example, setting <B>SANE_CONFIG_DIR</B> to "/tmp/config:"
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would result in directories <I>tmp/config</I>, <I>.</I>, and
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<I>/usr/local/etc/sane.d</I> being searched (in this order).
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<B>SANE_DEBUG_ST400</B>
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If the library was compiled with debug support enabled, this
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environment variable controls the debug level for this backend.
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E.g., a value of 128 requests all debug output to be printed.
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Smaller levels reduce verbosity.
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</PRE>
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<H2>MISSING FUNCTIONALITY</H2><PRE>
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Everything but the most basic stuff.
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</PRE>
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<H2>BUGS</H2><PRE>
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Currently, the backend does not check if the attached device really is
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a ST400. It will happily accept everything that matches the configura-
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tion entries. This makes it easy to test the backend with other scan-
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ners: Just add an appropriate line to the configuration file. The con-
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figuration file as distributed (see above) only works with the ST400.
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Be careful: If there is no config file at all, the backend defaults to
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<I>/dev/scanner</I>.
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The ST400 answers on all eight SCSI LUNs. Normally this is not a prob-
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lem, as LUN support is usually disabled in SCSI drivers, but if you are
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seeing multiple instances of the scanner in a device list, either dis-
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able LUNs in your SCSI setup or change the entry in the configuration
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file to match LUN 0 only.
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</PRE>
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<H2>DEBUG</H2><PRE>
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If you encounter a bug please set the environment variable
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<B>SANE_DEBUG_ST400</B> to 128 and try to regenerate the problem. Then send me
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a report with the log attached.
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If you encounter a SCSI bus error or trimmed and/or displaced images
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please also set the environment variable <B>SANE_DEBUG_SANEI_SCSI</B> to 128
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before sending me the report.
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</PRE>
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<H2>SEE ALSO</H2><PRE>
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<B><A HREF="sane.7.html">sane(7)</A></B>, <B><A HREF="sane-scsi.5.html">sane-scsi(5)</A></B>
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<I>http://www.informatik.uni-oldenburg.de/~ingo/sane/</I>
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</PRE>
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<H2>AUTHOR</H2><PRE>
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Ingo Wilken <<I>Ingo.Wilken@informatik.uni-oldenburg.de</I>>
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14 Jul 2008 <B><A HREF="sane-st400.5.html">sane-st400(5)</A></B>
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</PRE>
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