6
Negative quantities are by default not supported, but when using the 'Negative quantities'
option (see Appendix A) it is possible to scan negative quantities of barcodes. When a
specific barcode has a negative quantity the LED color changes to from green (add) or
orange (subtract) to red on a good read and the sound becomes slightly lower.
6
Deleting the database file from the internal RAM disk
It might be possible that your OPN has a full or corrupt RAM disk or contains unwanted
barcode data that you want to delete from the OPN. In this situation it is possible to read
the label below to erase all files from the RAM disk.*
_+-_
When using the OPN in USB-‐MSD mode, then it’s also possible to delete the file manually
using a file browser.
* Note: If the battery of the OPN goes dry, then the OPN won't immediately lose its
barcode data. However, after a few days after becoming empty all data on the RAM disk
will be lost. Also the internal clock will reset if the battery is completely drained. This
requires the correct time to be reconfigured using Appload.
Summary of Contents for OPN2002
Page 19: ... 19 ...