60 DataMan 300 Quick Reference Guide
DataMan 300 Quick Reference Guide 61
DataMan 300 Series Triggering
DataMan 300 series readers support the following trigger modes:
• Self:
At an interval you configure, the reader automatically detects and
decodes codes in its field of view. If you set a higher re-read delay than the
trigger interval, there is a code output only once until the code is out of the
field of view for the duration of the re-read delay.
• Single (external trigger): Acquires a single image and attempts to decode
any symbol it contains, or more than one symbol in cases where multicode
is enabled. The reader relies on an external trigger source.
•
Presentation: Scans, decodes and reports a single code in the field of view.
The reader relies on an internal timing mechanism to acquire images.
• Manual: Begins acquiring images when you press the trigger button on the
reader, and continues acquiring images until a symbol is found and decoded
or you release the button.
• Burst: Performs multiple image acquisitions based on an external trigger
and decodes any symbol appearing in a single image or within a sequence
of images, or multiple symbols in a single image or within a sequence of
images when multicode is enabled. You can control the number of images
within each burst and the interval between image acquisitions.
• Continuous: Begins acquiring images based on a single external trigger
and continues to acquire and decode images until a symbol is found and
decoded, or until multiple images containing as many codes as specified
in multicode mode are located, or until the trigger is released. You can
configure your reader to acquire images based on the start and stop signal
from separate digital IO pulses.
External Triggers
If you are using external triggering you can use any of these methods to
trigger your DataMan 300 series reader:
• Press the trigger button on
the reader.
• Send a pulse on the I/O
cable:
• T (red)
• Trigger - (black)
• Send a serial trigger command
over the RS-232 connection or
Ethernet connection.
• Press <CTRL>-T on the
keyboard while the Setup Tool
has the input focus.
• Click the Trigger button in the
Setup Tool:
