HP Point of Sale rp5000 HP USB Barcode Scanner Programming Reference Guide - Page 29

UPC/EAN Security Level, As bar code quality levels diminish, certain characters become

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Symbologies UPC/EAN Security Level The scanner offers four levels of decode security for UPC/EAN bar codes. Increasing levels of security are provided for decreasing levels of bar code quality. There is an inverse relationship between security and scanner decode speed, so be sure to choose only that level of security necessary for any given application. UPC/EAN Security Level 0 This is the default setting which allows the scanner to operate fastest, while providing sufficient security in decoding "in-spec" UPC/EAN bar codes. *UPC/EAN Security Level 0 UPC/EAN Security Level 1 As bar code quality levels diminish, certain characters become prone to misdecodes before others (i.e., 1, 2, 7, 8). If you are experiencing misdecodes of poorly printed bar codes, and the misdecodes are limited to these characters, select this security level. UPC/EAN Security Level 1 Programming Reference Guide 2-21

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Symbologies
Programming Reference Guide
2–21
UPC/EAN Security Level
The scanner offers four levels of decode security for UPC/EAN
bar codes. Increasing levels of security are provided for
decreasing levels of bar code quality. There is an inverse
relationship between security and scanner decode speed, so be
sure to choose only that level of security necessary for any given
application.
UPC/EAN Security Level 0
This is the default setting which allows the scanner to operate
fastest, while providing sufficient security in decoding “in-spec”
UPC/EAN bar codes.
*
UPC/EAN Security Level 0
UPC/EAN Security Level 1
As bar code quality levels diminish, certain characters become
prone to misdecodes before others (i.e., 1, 2, 7, 8). If you are
experiencing misdecodes of poorly printed bar codes, and the
misdecodes are limited to these characters, select this security
level.
UPC/EAN Security Level 1