Hardware manual

Impact Reference Guide Readers Drawer
3-155 Datalogic Automation Inc.
Fixed Grey Level
Threshold Percent-
age
The grey level threshold value for Fixed Threshold Edge Detection Sen-
sitivity when Grey Level Edge detection is selected (0 to 100 percent)
Adaptive Grey
Level Threshold
Offset
If one of the adaptive settings is picked from Edge Detection Sensitivity,
and Grey Level Edges is selected, then this offset is added to the adap-
tive threshold. This allows you to weight the adaptive threshold up or
down.
Noise Level The amount of background noise present in the image. Higher noise
means the edges must be farther apart. Lower noise allows edges that
are closer together.
Barcode Type See “Barcode Types” on page 3-158.
Expand UPC-A to
EAN-13
If True, the tool automatically expands a 12 character UPC code to a 13
character EAN-13 code. This can be useful if the codes are a mix of
UPC and EAN codes and you always want 13 characters to be output.
Expand UPC-E to
UPC-A
If True, the tool automatically expands an 8 character UPC-E code to a
12 character UPC-A code. This can be useful if the codes are a mix and
you always want 12 characters to be output. It is off by default.
Number of Scan
Lines
The number of scan lines to use for the barcode. The lines are automati-
cally spaced equally vertically across the code, perpendicular to the
bars. Their length is determined by the length of the Line Segment ROI.
Percent of Scan
Lines That Must
Pass
If this percentage of scan lines read the code successfully, the tool
passes. To verify that every part of the barcode is readable, set the num-
ber of scan lines high (maximum of ten is recommended) and the per-
centage that must pass high.
To improve the probability of reading a barcode, set this number low so
that if any part of it is readable the tool passes.
Verify String If this property contains a string, the tool passes only if this string
matches the Output String
Verify Optional
Check Character
See “Verify Optional Check Character” on page 3-159.
Output Name What it is
Successful Read If True, the tool read the barcode.
Output String The string that the tool read from the code.
Barcode Type
Found
The type of barcode read. See “Barcode Types” on page 3-158.
Scan Lines The scan lines used to read the code.
Success Per Scan
Line
A list of each lines pass status.
Input Name What it is