Scantron OpScan 4ES, Operator'S Manual

Page: 214 / 242

Chapter : Bar Code Reader
Read Capability
194 Scantron OpScan 4ES and
i
NSIGHT 4ES Scanners
NOTES:
• The bar code reader cannot read bar codes that
produce some ASCII codes. Refer to the technical
reference manual for more information.
• Bar codes with lower case characters cannot be
used with Scantron software.
• With vertical alignment, you can place six types of
bar code format on the top side of a sheet. Each
code can have a different format.
3 of 9 Code
(Code 39) Alphanumeric 0 through 9
A-Z, -, ., /, +,
%, and space Each character is
represented by 5 bars
and 4 spaces.
Three of the 9 bars or
spaces are wide
(binary value of 1); six
of the 9 bars or spaces
are narrow (binary
value of 0).
Start and stop
character for the code
is an asterisk (*).
Universal
Product Code
(UPC), versions
A (UPC-A) and
E (UPC-E) Numeric
(commonly
used on retail
products) 0 through 9 Each character is
represented by 2 dark
bars and 2 spaces of
varying widths.
Version A (regular
version of UPC)
contains 12 positions:
10 numeric and 2
control characters.
Version E allows for
smaller code by
suppressing zeros that
occur within the code.
a. Lowercase “a”, “b”, “c”, “d”, and “s”, are reserved for OpScan 4ES and
i NSIGHT 4ES scanner use. Code 128 B cannot be used to encode data
which includes these characters. These characters are defined by
Scantron and cannot be changed.
Code Type Character Set
Character
Representation