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RedHat 9 (Linux i386) - man page for sane-umax (redhat section 5)

sane-umax(5)			       File Formats Manual			     sane-umax(5)

NAME
       sane-umax - SANE backend for UMAX scanners

ABOUT THIS FILE
       This  file only is a short descripton of the umax-backend for sane! For detailled informa-
       tion take a look at sane-umax-doc.html (it is included in the sane source directory and in
       the xsane online help)!

DESCRIPTION
       The  sane-umax library implements a SANE backend that provides acces to several UMAX-SCSI-
       scanners and some Linotye Hell SCSI-scanners, parallel-	and  USB-scanners  are	not  (and
       propably will never be) supported!

       I  suggest  you	hold  one hand on the power-button of the scanner while you try the first
       scans!

CONFIGURATION
       The configuration file for this backend resides in      /etc/sane.d/umax.conf.

       Its contents is a list of device names that correspond to UMAX and UMAX	compatible  scan-
       ners. Empty lines and lines starting with a hash mark (#) are ignored. A sample configura-
       tion file is shown below:

	# this is a comment
	#
	option scsi-maxqueue 4
	option scsi-buffer-size-min 65536
	option scsi-buffer-size-max 131072
	option scan-lines 40
	option preview-lines 10
	option scsi-maxqueue 2
	option execute-request-sense 0
	option force-preview-bit-rgb 0
	option slow-speed -1
	option care-about-smearing -1
	option calibration-full-ccd -1
	option calibration-width-offset -1
	option calibration-bytes-pixel -1
	option invert-shading-data -1
	option lamp-control-available 0
	option gamma-lsb-padded 0
	/dev/sge

	#scsi Vendor Model Type Bus Channel ID LUN
	# The following scanner supports lamp control
	option lamp-control-available 1
	scsi UMAX * Scanner * * * * *

	# scanner on /dev/scanner does not support lamp control
	option lamp-control-available 0
	/dev/scanner

	- execute-request-sense:
	  values:
	   0 = disabled
	   1 = enabled
	  default = 0
	  If set to 1 umax_do_request_sense is called in
	  umax_do_calibration. This can hang the system
	  (but has been enabled until this version)

	- scsi-buffer-size-min, scsi-buffer-size-max:
	  values: 4096-1048576, default min=32768, max=131072
	  Especially the minimum value is very important.
	  If this value is set too small the backend is not
	  able to send gamma tables to the scanner or to
	  do a correct color calibration. This may result in
	  strange color effects. If the minimum value is set
	  too large then the backend is not able to allocate
	  the requested scsi buffer size and aborts with
	  out of memory error. The default is 32KB, for
	  some scanners it should be increased to 64KB.

	- scan-lines, preview-lines:
	  values: 1-65535,
	  default: scan-lines=40, preview-lines=10
	  define the maximum number of lines that are scanned
	  into one buffer

	- force-preview-bit-rgb:
	  values:
	   0 = disabled
	   1 = enabled
	  default = 0
	  set preview bit in rgb real scan

	- slow-speed, care-about-smearing:
	  values:
	  -1 = auto
	   0 = disabled
	   1 = enabled
	  default = -1
	  dangerous options, needed for some scanners
	  do not changed these options until you really know
	  what you do, you may destroy your scanner when you
	  define wrong values for this options

	- calibration-full-ccd:
	  values:
	  -1 = auto
	   0 = disabled
	   1 = enabled
	  default = -1
	  do calibration for each pixel of ccd instead of
	  selected image

	- calibration-width-offset:
	  values: -99999=auto, >-99999 set value
	  add an offset width to the calculated with for
	  image/ccd

	- calibration-bytes-pixel:
	  values:
	  -1 = disabled
	   0 = not set
	   1 = 1 byte/pixel,
	   2 = 2 bytes/pixel
	  use # bytes per pixel for calibration

	- invert-shading-data:
	  values:
	  -1 = automatically set by driver - if known
	   0 = disabled
	   1 = enabled
	  default = -1
	  invert shading data before sending it back to the scanner

	- lamp-control-available:
	  values:
	   0 = automatically set by driver - if known
	   1 = available
	  default = 0

	- gamma-lsb-padded:
	  values:
	  -1 = automatically set by driver - if known
	   0 = gamma data is msb padded
	   1 = gamma data is lsb padded
	  default = -1

	- handle-bad-sense-error:
	  values:
	   0 = handle as device busy
	   1 = handle as ok
	   2 = handle as i/o error
	   3 = ignore bad error code - continue sense handler,
	  default = 0

	- scsi-maxqueue:
	  values:
	   1..# (maximum defined at compile time)
	  default = 2
	  most scsi drivers allow internal command queueing with a depth
	  of 2 commands. In most cases it does not mprove anything when you
	  increase this value. When your scsi driver does not support any
	  command queueing you can try to set this value to 1.

       The special device name must be a generic SCSI device or a symlink to such a  device.   To
       find  out to which device your scanner is assigned and how you have to set the permissions
       of that device, have a look at sane-scsi.

SCSI ADAPTER TIPS
       The ISA-SCSI-adapters that are shipped with some Umax-scanners are not supported very well
       by  Linux  (I suggest not to use it), the PCI-SCSI-adapters that come with some Umax-scan-
       ners are not supported at all (as far as I know). On other platforms  these  SCSI-adapters
       are  not  supported.  So  you typically need to purchase another SCSI-adapter that is sup-
       ported by your platform. See the relevant hardware FAQs and HOWTOs for your  platform  for
       more information.

       The UMAX-scanners do block the scsi-bus for a few seconds while scanning. It is not neces-
       sary to connect the scanner to its own SCSI-adapter. But if you need short  response  time
       for  your  SCSI-harddisk (e.g. if your computer is a file-server) or other scsi devices, I
       suggest you use an own SCSI-adapter for your UMAX-scanner.

       If you have any problems with your Umax scanner, check your scsi chain (cable length, ter-
       mination, ...).

       See also: sane-scsi(5)

FILES
       The backend configuration file:
	/etc/sane.d/umax.conf

       The static library implementing this backend:
	/usr/lib/sane/libsane-umax.a

       The shared library implementing this backend :
	/usr/lib/sane/libsane-umax.so
	(present on systems that support dynamic loading)

ENVIRONMENT
       SANE_DEBUG_UMAX
	If  the  library  was compiled with debug support enabled, this environment variable con-
       trols the debug level for this backend. E.g., a value of 128 requests all debug output  to
       be printed. Smaller levels reduce verbosity: SANE_DEBUG_UMAX values

	Number	Remark
	0	print important errors (printed each time)
	1	print errors
	2	print sense
	3	print warnings
	4	print scanner-inquiry
	5	print informations
	6	print less important informations
	7	print called procedures
	8	print reader_process messages
	10	print called sane-init-routines
	11	print called sane-procedures
	12	print sane infos
	13	print sane option-control messages
       Example:
       export SANE_DEBUG_UMAX=8

BUGS
       X-resolutions greater than 600 dpi sometimes make problems

SEE ALSO
       sane(7)

AUTHOR
       Oliver Rauch

EMAIL-CONTACT
       Oliver.Rauch@Rauch-Domain.DE

					  16 august 2000			     sane-umax(5)


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