2 - 4 DS3408 Product Reference Guide
LED Definitions
In addition to beep sequences, the digital scanner uses a two-color LED to indicate status. Table 2-2 defines LED
colors that display during scanning.
Host Specific
USB only
4 short high beeps Digital scanner has not completed initialization. Wait several
seconds and scan again.
Short low/short medium/short high
beep sequence after scanning a USB
device type
Communication with the bus must be established before the digital
scanner can operate at the highest power level.
Short low/short medium/short high
beep sequence occurs more than once
The USB bus can put the digital scanner in a state where power to
the digital scanner is cycled on and off more than once. This is
normal and usually happens when the PC cold boots.
RS-232 only
1 short high beep A <BEL> character is received and Beep on <BEL> is enabled.
Table 2-1
Beeper Definitions (Continued)
Beeper Sequence Indication
Table 2-2
Standard LED Definitions
LED Indication
Off No power is applied to the digital scanner, or the digital scanner is on and ready to scan.
Green A bar code was successfully decoded.
Red A data transmission error or digital scanner malfunction occurred.
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