LED AND BEEPER INDICATIONS
PRODUCT REFERENCE GUIDE
303
LED AND BEEPER INDICATIONS
The reader’s beeper sounds and its illumination flashes or changes color to indicate var
-
ious functions or errors on the reader. A “Green Spot” also lights to indicate a good
read. The tables below list these indications.
Table 29LED and Beeper Indications
USER INDICATIONS FOR GD4500
Table 30 User Indications for GD4500
INDICATION
LED
BEEPER
Power-up
Upper LED flashes/blinks on power-up,
however, this may be too rapid to view.
With a USB interface, the LED blinks
until enumeration with the host is com
-
pleted.
Reader beeps four times at highest fre
-
quency and volume upon power-up.
Good Read
Upper green LED comes on for pro
-
grammed time (default).
LED behavior for this indication is con
-
figurable using Aladdin utility.
One beep at current frequency, volume,
mono/bi-tonal setting upon a successful
label scan. It is also possible to upload cus
-
tom jingles with Aladdin.
ROM Failure
200 msec on
↔
200 msec off
Reader sounds one error beep at highest
volume for 200 msec.
Limited Scanning Label
Read
N/A
Reader 'chirps' six times at the highest fre
-
quency and current volume.
Reader Disabled
The LED blinks continuously
100 msec on
↔
900 msec off
N/A
STATUS
3GL AND GOOD READ LED
BUZZER
Power-up
OFF
Rising Beeps’ Sequence
USB Enumeration Phase
250 msec
a
ON
↔
250 msec OFF
OFF
USB Suspend
Depends on Power Cable and specific configu
-
rations
OFF
Idle
OFF
OFF
While Reading
OFF
OFF
Decode Done
Solid ON
Programmable Duration (1 s default)
Single Beep
Reader Disabled (POS)
Communication with host not
established
100 msec ON
↔
900 msec OFF
OFF
Firmware Upgrade
250 msec ON
↔
250 msec OFF
OFF
Host Download
250 msec ON
↔
250 msec OFF
OFF
Enter Service Mode
No Effect
Beeps’ Sequence
Label Programming
No Effect
Beep
a. “msec” stands for milliseconds, equivalent to 1/1000th of a second
