Honeywell MS4980 Installation And User Manual page 28

Symptoms
The unit scans
but the data is
not correct.
The following item is only relevant for an RS232 interface.
The unit powers
up OK and scans
OK but does not
communicate
properly with the
host.
The unit powers
up OK and scans
OK but does not
communicate
properly with the
host.
Characters are
being dropped.
The following item is only relevant for a USB interface.
No LEDs, beep
or illumination.
24
Possible Causes
The scanner and host
may not be configured for
the same interface
parameters.
The com port at the host
is not working or not
configured properly.
The cable is not
connected to the correct
COM port.
Inter-character delay
needs to be added to the
transmitted output.
The USB host may not be
active.
The MS4980 will not
operate from hub/host
power without host
communication.
The unit is not receiving
sufficient power to support
operation.
Refer to the electrical
specifications on page 26.
Solution
Check that the scanner and the
host are configured for the
same interface parameters.
Check to make sure that the
baud rate and parity of the
scanner and the
communication port match and
the program is looking for
"RS232" data.
Check to make sure that the
cable is connected to the
correct COM port.
Add some inter-character delay
to the transmitted output by
using the Configuration Guides
(PN 00-02544 and 00-05252).
Turn on the host device.
Verify adequate power is being
supplied to the scanner.