
BCS3600
ex
series
Hand-held scanner and accessories
Faults – causes
and remedies
Subject to technical changes.
April 2022 / Revision C
151/164
12.5
USB-SPP is detected as unknown interface
Possible cause
When using the USB-SPP interface of the Universal supply module
(USM), it is recognized as an unknown device on the Windows PC.
The driver for the USM can also not be installed.
Possible solution
The UVM is recognized as virtual COM port when using the USB-
SPP.
Check the wiring. If the D+ and D- data lines are switched, the UVM
is detected as an unknown USB device. Communication is not
possible in such a case because the wiring is not correct. It is also
important that GND and Shield are connected correctly.
Ferrite core must be used when using the USB-SPP
according to the manual.
If this is not done correctly, problems and disturbances in the
communication with the USB-SPP may result
Note:
The color assignment of USB cables is not standardized.
Which color is used for USB wires D+ and D- depends on the USB
cable manufacturer
Tip:
Measure the cable to know before wiring which wires correspond
to D+ and D-.
Содержание BCS3600ex Series
Страница 1: ...Hand held scanner BCS3600ex series User Manual...
Страница 2: ......
Страница 4: ......
Страница 172: ...Notes BCS3600ex series Hand held scanner and accessories 164 164 Subject to technical changes April 2022 Revision C...
Страница 173: ......