33
S
CANNER
O
PERATION
I
NDICATOR
D
ESCRIPTIONS
Visual
There is a blue LED on the top of the 7820 as well as
three illuminated buttons on the front. When the
scanner is on, the flashing or constant illumination of
the LED indicates the status of the current scan and
the scanner.
Figure 31. LED
No Blue LED
The LEDs will not be illuminated if the scanner is not receiving
power from the host or transformer.
or
The unit is in Power Save Mode. During Power Save Mode,
the laser will be off and the blue LED will not illuminate.
Steady Blue LED
When the laser is active, the blue LED is illuminated. The blue
LED will remain illuminated until the laser is deactivated.
Steady Blue LED to OFF
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
blue LED will remain off until the data can be transmitted.
Single Blue LED Flash
When the scanner successfully reads a bar code, the blue
LED will flash and the scanner will beep once. If the blue LED
does not flash or the scanner does not beep once, then the
bar code has not been successfully read.
The blue LED will also flash once while the EAS is in
deactivation mode.
Flashing Blue LED
This indicates the scanner is in program mode. A flashing
blue LED with razzberry tone indicates that an invalid bar code
has been scanned during this mode.