Rockwell Automation 2755 Enhanced Decoder Series B - Manual (Page 350)

Glossary G–9
Publication 2755-833
symbols per scan
A value that indicates the number of bar code symbols expected in a
single sweep of the scanning beam.
U
UPC
Acronym for Universal Product Code. The standard bar code type
for retail food packaging in the United States.
V
valid package
A scan (or group of scans) that is comprised of valid reads and
satisfies the fields per package parameter.
valid read
A condition that occurs when sufficient valid scans have been
decoded to satisfy the capture count.
valid scan
A condition that occurs when sufficient valid fields have been
decoded to satisfy fields/scan.
W
word
A unit of data which contains two bytes (16 bits).