When it comes to enabling double-feed detection, older versions of Ranger and newer versions behave differently. It is best to upgrade to the latest version of Ranger whenever you can.
To
enable double-feed detection, try making the following call when Ranger is in the TransportChangeOptions state:
Ranger.SetGenericOption("
Optional Devices", "
NeedDoubleDocDetection", "
true"
);
To
disable double-feed detection call:
Ranger.SetGenericOption("
Optional Devices", "
NeedDoubleDocDetection", "
false"
);
If double-feed detection does not seem to work after setting the option above, look in Ranger's driver options file for your scanner. (see Where are the Ranger INI files located? (http://www.sbulletsupport.com/forum/index.php?topic=51.0)) If you find double-feed options in the driver options file, you can set them by calling
Ranger.SetDriverOption().