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TROUBLESHOOTING GUIDE (CONTINUED)
SYMPTOMS POSSIBLE CAUSE(S) SOLUTION
Characters are
being dropped.
Intercharacter delay
needs to be added to
the transmitted output.
Add some intercharacter
delay to the transmitted
output by using the
MetroSelect Programming
Guide (
MLPN 00-02407).
Slave operation with any interface
Trouble with the
Slave Scanner.
Refer to the user’s guide
provided with the slave
scanner.
Cable [MLPN 54-54667]
may not be connected
to the proper port.
Ensure slave scanner is
connected to the MS7220
com port marked “Aux” port.
* The MS7220 must be
programmed to enable the
“Aux” port.
Slave Scanner
powers up but
data is not
relayed to the
host.
The “Aux” com port
may not be operating
properly.
The slave scanner must be
configured to send “slave”
formatted data (reserve
code 32).
* Use MetroSet
®
. For the Auxiliary interface, choose “HoloTrak Decode”. All
remaining parameters will be automatically chosen.
USB Only
Check that the scanner is
programmed for USB
operation.
The unit powers
and scans but
does not
communicate.
The USB Port is not
operating correctly.
Check that the host’s USB
port is enabled.
The unit emits a
razz tone and the
LEDs flash three
times when
configured for
USB.
The USB port is not
operating correctly.
Disconnect then reconnect
the USB cable at the host
end. Contact a Metrologic
service representative if
symptoms persist.