Metrologic Instruments MS7320 ユーザーズマニュアル

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18 
V
ISUAL 
I
NDICATORS
 
 
There is a red LED and green LED on  
the front of the MS7320.  When the scanner is on, the 
flashing or constant illumination of the LEDs indicates 
the status of the current scan and the scanner. 
 
Figure 12: LEDs 
 
No Red or Green LED 
The LEDs will not be illuminated if the scanner is not receiving 
power from the host or transformer. 
 
Steady Green 
 
When the laser is active, the green LED is illuminated.  The 
green LED will remain illuminated until the laser is deactivated.  
 
During the power save mode, the laser will turn on and off. 
During this period, the green LED remains illuminated. 
 
Steady Green and Single Red Flash 
 
When the scanner successfully reads a bar code, the red LED 
will flash and the scanner will beep once.  If the red LED does 
not flash or the scanner does not beep once, then the bar code 
has not been successfully read. 
 
Steady Green and Steady Red 
 
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 red 
LED will remain on until the data can be transmitted. 
 
Flashing Green then Flashing Red 
 
This indicates the scanner is in program mode.  A razzberry 
tone indicates that an invalid bar code has been scanned in 
this mode. 
or   
If the unit is in sleep mode, each LED will flash once every 15 
seconds.  
 
Steady Red, Green off 
 
This indicates the scanner may be waiting for communication 
from the host.