
32 
TROUBLESHOOTING  
Symptom  Possible Cause(s)  Solution 
All Interfaces 
The bar code may have been 
printed incorrectly.  Check if it is a check digit, character or border problem. 
The scanner is not configured 
correctly for this type of bar 
code. 
Check if check digits are set properly. 
The unit beeps at some 
bar codes but NOT for 
others of the same bar 
code symbology. 
The minimum symbol length 
setting does not work with the 
bar code. 
Check if the correct minimum symbol length is set. 
RS232 Only 
The com port at the host is 
not working or is not 
configured properly. 
The cable is not connected to 
the proper com port. 
The unit powers up OK 
and scans OK but does 
not communicate 
properly to the host. 
The com port is not operating 
properly. 
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. 
The host is receiving 
data but the data does 
not look correct. 
The scanner and host may 
not be configured for the 
same interface. 
Check that the scanner and the host are configured for the 
same interface. 
Characters are being 
dropped. 
The intercharacter delay 
needs to be added to the 
transmitted output. 
Add some intercharacter delay to the transmitted output by 
using the MetroSelect Configuration Guide (MLPN 00-02407x). 
Aux Port Operation With Any Interface 
The secondary scanner 
is not functioning.     Refer to the user’s guide provided with the secondary scanner. 
The secondary scanner cable 
may not be connected to the 
proper port on the StratosH. 
Ensure that the secondary scanner is connected to the MS2122 
com port marked “Aux” port. 
*  The MS2122 must be programmed to enable the auxiliary 
port. 
The secondary scanner 
powers up but data is 
not relayed to the host.  The auxiliary com port may 
not be operating properly. 
The auxiliary input port’s data format must match the main 
output format of the secondary scanner. 
*  Refer to the MS2xxx Stratos Series Configuration Addendum (MLPN 00-02034x) under Scanner Configuration Bar Codes: 
Auxiliary Port, Quick Start for a Secondary Metrologic Scanner.