Setting barcode scanner preferences
How to make the scanner beep less beepy
Settings on barcode scanners are changed by scanning specially-created barcodes specific to that make and model. Use this one-page document giving barcodes for the settings most commonly used at the Folger to set your preferences (for best results, print it out, otherwise you'll just be scanning the reflection from your computer screen).
You can also use the full manual on the manufacturer's website,