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6-8
LS 3070 Product Reference Guide: Programming
Decode Redundancy
Use this parameter to indicate whether the scanner must read a bar code one
time (LEVEL 1), two times (LEVEL 2), or three times (LEVEL 3) before
decoding it. A higher level of redundancy ensures the accuracy of a decode in,
for example, poor quality symbols.
UPC-A and -E Preamble
Three options are given for the lead-in characters of decoded UPC-A or UPC-
E symbols transmitted to the host device. Select one preamble for UPC-A
decodes and one for UPC-E decodes. These lead-in characters are considered
part of the symbol itself. The three options are:
• a system character only
• the country code and system character
• no preamble
The system character is the digit printed to the extreme left of a UPC symbol.
The country code for UPC is always zero, and it cannot be transmitted without
the system character.
Pause Duration
This parameter, used in data editing, allows a pause to be inserted at any point
in the data transmission. Pauses are set by scanning a two digit number (i.e.,
two bar codes), and are measured in 1/10 second intervals. For example,
scanning bar codes “0” and “1” will insert a 1/10 second pause; “0” and “5”
will give you a 1/2 second delay.
Prefix/Suffix Values
A prefix/suffix may be appended to scan and magstripe data, for use in data
editing. These values are set by scanning a four digit number (i.e., four bar
codes) that correspond to keycodes for various terminals. See the ASCII Table
beginning on page 8-1.