MDI-4000 Series Serial Interface Manual
Keyboard Language Commands (continued)
4.3.9 Troubleshooting USB-HID
Use this table to find possible solutions to common USB-HID problems.
USB-HID Troubleshooting
Output is not correct
Characters are out of order
• Make sure the keyboard language and output destination application
settings are correct.
• If the host processing speed is not fast enough, add an inter
character delay.
• If the control string is included, make sure that Ctrl +“any alphabet
key” does not overlap with the shortcut key on the host side.
Multi-byte character is not
output
Try the Windows WIME application with USB-COM. For more
information, see “COM to HID Output (WIME)” on page 30.
Configure the additional suffix setting based on the host application’s
line break.
Images cannot be transferred.
Scan engine does not
appear in the device
manager
Scan engine unexpectedly
restarts
Error beep sounds and there
is no output after reading a
barcode
• Make sure the USB cable is properly connected.
• Make sure that the connected USB port is operating properly.
• Make sure that the USB port power supply is providing enough
power. Laptops or hubs may not be able to supply sufficient power.
• Remove the scan engine from the USB port, and then re-connect
the scan engine.
• Connect the scan engine to a different port.
4.4 Data Buffer Mode Common Setting
The data buffer mode setting is common to all interfaces. This setting lets you specify whether
to read an object during data output.
When data buffer mode is enabled, the scan engine can perform other operations, such as
barcode scanning while outputting decoded data. However, reading performance may decrease
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