Denso QS20H, Руководство пользователя

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• The QS20H cannot support touch scanning. If you bring the scanning
window into contact with a target code, the QS20H cannot read it.
• The QS20H can read 2D codes omnidirectionally. Note that the target code
including the margin should lie within the scanning range.
• The time required to read a 2D code is proportional to the volume of data
contained in the code. If you scan a 2D code containing a large volume of
data with the QS20H, it may take time.
• Disabling reading of unnecessary types of codes may increase the scan-
ning speed.
• Low-quality bar codes (blurred or printed too lightly) may not be read by
the QS20H even if they are the type that barcode-dedicated scanners can
read.
Before reading labels, clean them if stained.
Avoid using the QS20H in direct sunlight. The QS20H might fail to read
correctly.
Depending upon the cell pitch or code size, the proper scanning distance
from labels will differ.
NOTE
NOTE
NOTE