Omron V460-H User Manual page 52

Tips and Tricks – Small 1D and 2D Codes, Shiny Codes
• If the code is difficult to read, change the reader position while holding the trigger.
• 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.
• For codes printed in color, select the proper lighting color to create contrast when using Dome
Lighting (RGB available).
• Using the opposite light spectrum will make the target appear darker.
• Using the same light spectrum will make the target appear lighter.
• The target can be the code's foreground or background color.
Readability Tables – Small 1D and 2D Codes, Shiny Codes
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 5.0 mil 1D barcode should be read at a distance ≥ 75 mm. A 5.0 mil 2D code should be read at a
distance ≈ 25 mm.
V460-H Industrial Handheld DPM Reader User Manual
3 Basic Operation
3-11
3