Denso AT20B-SM User Manual page 101

USB Keyboard interface :
Trouble
②③
The keyboard type selected not match
one that is set up in the host computer.
②③
The Caps Lock state selected not
match that of the connected keyboard.
②
Any device driver other than the
system-supplied driver (USB device
class driver for HID) may be used.
②
The computer's keyboard is pressing.
②
The transaction
application program used is slower
than the transmission speed from the
scaner to the host computer.
Cause
speed of the
Countermeasure
Select the same keyboard type as one that is set up in the host
computer.(You can check the computer's keyboard type by
clicking My Computer|Control Panel|Keyboard|Hardware.)
Select the same Caps Lock state as that of the connected
keyboard.
Use the system-supplied driver.
Do not press the computer's keyboard when reading barcode.
Set a longer scaner data transmission interval.
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