Metrologic MS9540-38-3 - MS9540 VoyagerCG Installation And User Manual page 33

T
ROUBLESHOOTING
Symptoms
The unit scans
but the data is
not correct.
The unit is
transmitting each
character twice.
Alpha characters
show as lower
case.
Everything works
except for a
couple of
characters.
The unit powers-
up OK and scans
OK but does not
communicate
properly to the
host.
The host is
receiving data
but the data does
not look correct.
Characters are
being dropped.
G
UIDE
Possible Causes
The unit's configuration
is not correct.
The unit's configuration
is not correct.
The computer is in
Caps Lock mode.
These characters may
not be supported by
that country's key look
up table.
The com port at the
host is not working or
not configured
properly.
The cable is not
connected to the
proper com port.
The scanner and host
may not be configured
for the same interface
parameters.
Inter-character delay
needs to be added to
the transmitted output.
Solution
Make sure that the proper PC type
AT, PS2 or XT is selected. Verify
the correct country code and data
format is selected. Adjust the inter-
character delay symptom.
Increase the interscan code delay
setting. Adjust whether the F0
break is transmitted.
It may be necessary to try this in
both settings.
Enable the Caps Lock detect feature
of the scanner to detect whether the
PC is operating in Caps Lock.
Try operating the scanner in Alt
mode.
Check to make sure that the baud
rate and parity of the scanner and
the communication port match and
that the program is looking for
"RS232" data.
Check to make sure that the unit is
connected to the correct com port
on the host device.
Check that the scanner and the host
are configured for the same
interface parameters.
Add some inter-character delay to
the transmitted output by using the
MetroSelect Single-Line
Configuration Guide.
29