Metrologic Instruments MS6720 - Manual (Page 20)

14
V ISUAL I NDICATORS
There are a red LED and a green LED on the scanner. When the scanner is on, the
flashing or stationary activity of the LEDs indicates the status of the scan and scanner.
No Red or Green LED
There are two reasons why the LEDs will not be illuminated:
1. If the scanner is receiving power and the LEDs are not on, then
the scanner has been dormant for a specified time and the laser
has turned off. To reactivate the unit, pass an object
through the scan field.
2. If the scanner is not receiving power from the host or
transformer, then the LEDs will not be on.
Steady Red
When the laser is on, the red LED is also on. The red LED will
remain on until the scanning period has expired.
Steady Red and Single Green Flash
When the scanner successfully reads a bar code, the green LED will
flash then beep once. If the green LED does not flash or the scanner
does not beep once, then the bar code has not been successfully
read.
Steady Red and Steady Green
After a successful scan, the scanner transmits the data to the host
device. If the host is not ready to accept the information, the
scanner’s green LED will remain on until the data can be
transmitted. The red LED will turn off when the scanning period
expires.
Steady Red and Flashing Green
This indicates the scanner is in program mode. A razzberry tone
indicates that an invalid bar code has been scanned in this mode.
Steady Green
This indicates the scanner may be waiting for communication from
the host.
Flashing Green
This indicates the scanner is waking up from a dormant state in
response to an IR sensor activation.