This article is used to troubleshoot issues related to "USB ignores unknown characters" and provides corresponding processing directions and settings.
Applicable to:
CS9501, E950, RS-9000BT, RS-9000PT, RF5520, RF5520U
Questions
- What should I do if USB ignores unknown characters?
- Why does USB ignore unknown characters?
- What to do when USB ignores unknown characters?
- What settings need to be checked for USB to ignore unknown characters?
Resolution / Answer
This article is used to explain the meaning and common processing directions of the phenomenon "USB ignores unknown characters". Usually when the scan results are abnormal, the device behavior is not as expected, or you need to check whether the current parameters are set incorrectly, you can refer to this article to check them one by one.
Valid only for HID keyboard emulation devices and IBM devices. "Unknown characters" refer to characters that are not recognized by the host computer. Selecting "Send barcodes with unknown characters" will send all barcode data except unknown characters, and the decoder will not issue an error beep.
When "Do not send barcodes with unknown characters" is selected: For IBM devices, any barcode containing at least one unknown character will be prevented from being sent to the host; for HID keyboard emulation devices, only the characters before the unknown character is encountered will be sent. The decoder will beep for errors.
* Send barcodes containing unknown characters (transmission)
Scan the following barcode,* Send a barcode with unknown characters (transmit).
Do not send barcodes containing unknown characters (disabled)
Scan the following barcode to do not send barcodes containing unknown characters (disabled).
If this does not resolve the issue, please reset the barcode scanner or contact us. Click here to find your barcode scanner model and perform the reset.