User manual

REFERENCES
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In multiple reads per cycle, the ON period is extended so that the device can
continue decoding codes until an OFF event occurs. For software trigger mode, the
flash on period is immediately reset after each read and therefore extended. If
another code is decoded before the reset
flash on period expires, it is again reset and
the effect is that the device remains ON, decoding codes until the
flash on or timeout
period expires.
The Safety Time parameter should be used in this case to avoid unwanted multiple
reading of the same code, see section 5.6.5.
5.6.5 Safety Time
Safety time prevents the device from immediately decoding the same code more than
once. Same code consecutive reading can be disabled requiring the reader to be
removed from the code (no decoding) for at least 400 ms, or a timeout can be set up
to 9.9 seconds before the decoder will accept the same code. Reading is immediate if
the code changes.
The safety time parameter is not applicable when reading stacked codes or when
setting one read per cycle in hardware trigger operating mode, since these settings
require voluntary action by the user.
5.7 DECODING PARAMETERS
These parameters are intended to enhance the decoding capability of the
reader for particular applications. Used incorrectly, they can degrade the
reading performance or increase the possibility of a decoding error.
CAUTION
5.7.1 Ink-Spread
The ink-spread parameter allows the decoding of codes, which are not perfectly
printed because the page texture tends to absorb the ink.
5.7.2 Overflow Control
The overflow control parameter can be disabled when decoding codes printed on
small surfaces, which do not allow the use of an overflow space.
This command does not affect code families 2/5, Code 128 and Code 93.