Hi All, I have three types of DPM barcode, and I can read these barcodes with DS3578-DP; But I can not read them with MC3190(DPM engine). As we  know, the DS3578-DP and the MC3190(DPM engine) have the same scan engine, that is SE4500 . Anyone can tell me, why the MC3190 can not read the same DPM barcode ?  some setting can improve it's performance ? Any feedback will be appreciate !  Thanks all . Silver