Omron V460-H User Manual page 50

Tips and Tricks – 1D and 2D Codes on Labels
• If the code is shiny and difficult to read, try the suggestions in 3-2-5 Small 1D and 2D Codes (Less
than 5 mil), Shiny Codes.
• While keeping the trigger pulled, move closer if the codes are small.
• If the code is difficult to read, change the reader position while holding the trigger.
• If reading a code at greater than 4" (±100 mm), position the reader at 15° for improved decoding.
• If needed, check the readability table to confirm that the code density can be read at the current
working distance.
• Check that the reader can "see" the entire code, i.e., code size < FOV (field of view).
• Check that the correct code type is currently enabled.
Important: Aztec Code, Pharmacode, and DotCode aren't enabled by default.
• Check that the symbology features are properly enabled.
Important: DMRE (Data Matrix Rectangular Extension) is not enabled by default.
• For Data Matrix codes, only ECC 200 is enabled by default. If necessary, legacy ECC 000 - ECC 130
can be enabled.
Readability Tables – 1D and 2D Codes on Labels
The readability tables below show the calculated PPE (pixels per element) for a range of typical
code sizes (X-dimensions) at certain working distances. For a 1D barcode (high-contrast label): 1.5
PPE is suggested as a minimum. 2.0 PPE or more is preferred. For a 2D code (high-contrast label):
2.5 PPE is suggested as a minimum. 3.5 PPE or more is preferred.
A 10.0 mil 1D barcode should be read up to a distance of 200 mm (or even a little further, as the PPE
at 200 mm is 2.09.) A 10.0 mil 2D code should be read at a distance ≈ 100 mm.
V460-H Industrial Handheld DPM Reader User Manual
3 Basic Operation
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3