The dumpinquiry line causes some information about the camera to be printed.
cmdrespause specifies how many usec (1,000,000ths of a second) to wait between writing the command and reading the result. 125000 seems to be the lowest I could go reliably.
breakpause specifies how many usec (1,000,000ths of a second) between sending the "back to default" break and sending commands.
Empty lines and lines starting with a hash mark (#) are ignored. A sample configuration file is shown below:
@CONFIGDIR@/dc210.conf The backend configuration file (see also description of SANE_CONFIG_DIR below).
@LIBDIR@/libsane-dc210.a The static library implementing this backend.
@LIBDIR@/libsane-dc210.so The shared library implementing this backend (present on systems that support dynamic loading).
SANE_CONFIG_DIR This environment variable specifies the list of directories that may contain the configuration file. On *NIX systems, the directories are separated by a colon (`:'), under OS/2, they are separated by a semi-colon (`;'). If this variable is not set, the configuration file is searched in two default directories: first, the current working directory (".") and then in @CONFIGDIR@. If the value of the environment variable ends with the directory separator character, then the default directories are searched after the explicitly specified directories. For example, setting SANE_CONFIG_DIR to "/tmp/config:" would result in directories "tmp/config", ".", and "@CONFIGDIR@" being searched (in this order).
SANE_DEBUG_DC210 If the library was compiled with debugging support enabled, this environment variable controls the debug level for this backend. A value of 128 requests maximally copious debug output; smaller levels reduce verbosity.
This backend is based somewhat on the dc25 backend included in this package by Peter Fales.
The manpage was copied from the dc25 backend and somewhat edited by Henning Meier-Geinitz.
More general comments, suggestions, and inquiries about frontends or SANE should go to the SANE Developers mailing list (see http://www.sane-project.org/mailing-lists.html for details). You must be subscribed to the list, otherwise your mail won't be sent to the subscribers.