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20
SCANNER OPERATION
Visual Indicators
The QuantumT is equipped with a blue and white LED that indicates the
scanner’s state and the status of the current scan when the unit is in operation.
Figure 13. Speaker Location and LED Location
No LEDs
The LEDs will not be illuminated if the scanner is not receiving power from the
host or transformer. They are also not illuminated when the laser is turned off
for any reason.
Steady Blue
When the laser is active, the blue LED is illuminated. The blue LED will remain
illuminated until the laser is deactivated.
Steady Blue and Single White Flash
When the scanner successfully reads a bar code, the white LED will flash and
the scanner will beep once. If the white LED does not flash or the scanner
does not beep once, then the bar code has not been successfully read.
Steady White and Blue
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 Blue and White Flashes
This indicates the scanner is in program mode. A razzberry tone indicates that
an invalid bar code has been scanned in this mode.
Steady White, Blue Off
This indicates the scanner may be waiting for communication from the host.