Printronix Online Data Validator - Manual (Page 73)

Advanced Validator Options
73
Min. Read Scans
This menu item sets the minimum number of scans per bar code
that must be read. If less than the minimum number is read, then
the “Unscannable / xx Missing Codes” error message is generated.
To ensure that the validator accurately validates the bar codes, set
the Min. Read Scans value to 75% of the number of scans possible
per bar code (rounded down).
Use this formula to determine the number of scans possible per bar
code in relation to print speed and bar code height:
Set Min. Read Scans to 75% of the Number of Scans Possible
value.
IMPORTANT If you have more than one bar code on the form, use the
shortest bar code for the calculation.
Example
For a 0.5 inch tall bar code printing at 4 inches per second:
Set Min. Read Scans to 75% of 12, which is 9.
100 x Bar Code Height In Inches
Print Speed (Inches Per Second)
Number of Scans Possible
=
(rounded down)
100 x 0.5
4
12 Number of Scans Possible
(rounded down)
=