Metrologic Instruments MS1690 Focus Manuel D’Utilisation

Page de 56
 
 
17
S
CANNER 
O
PERATION
 
 
Visual
 
Indicators
 
 
 
The MS1690 series scanner 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. 
 
No LEDs are Illuminated 
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. 
 
Steady Yellow  
The yellow LED is illuminated when the scanner is in the stand. 
 
Steady Blue 
The blue LED is illuminated when the scanner is active and linear illumination 
is on or when the scanner is attempting to decode a bar code. 
 
Steady Blue and Single White Flash 
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. 
 
Steady White 
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.  
 
Alternating Flashing of Blue and White 
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. 
 
Flashing Blue  
The blue LED will flash if the trigger is pressed while the scanner is in the  
in-stand presentation mode.  The blue LED will stop flashing after a brief 
period of time.  
Figure 15.