Metrologic Instruments MS1890 Manuel D’Utilisation

 

 

14 

S

CANNER 

O

PERATION

 

 

 

 

 

 

The MS1890 has three LED indicators (yellow, white and 
blue) located on the top of the scanner.  When the scanner 
is on, the flashing or stationary activity of the LEDs 
indicates the status of the current scan and the scanner. 
 
 

The LEDs will not be illuminated if the scanner is not 
receiving power from the host or transformer. 

 

The scanner is in stand-by mode.  Present a bar code to 
the scanner and the blue LED will turn on when the IR 
detects the object. 
 
 

The blue LED is illuminated when the scanner is active and linear illumination 
is on or when the scanner is attempting to decode a barcode. 
 
 

When the scanner successfully reads a bar code it will beep once and the 
white LED will turn on indicating data is being transmitted. 
 
If the scanner does not beep once and the white light does not turn on, then 
the bar code has not been successfully read. 
 
 

When the scanner successfully reads a bar code it will beep once and the 
white LED will turn on indicating data is being transmitted. 

 

After a successful scan, the scanner transmits the data to the host 
device.  Some communication modes require that the host inform the 
scanner when data is ready to be received.  If the host is not ready to 
accept the information, the scanner’s white LED will remain on until the 
data can be transmitted.  

 
 

This indicates the scanner is in configuration mode.  A short razzberry tone 
indicates that an invalid bar code has been scanned while in this mode.