Rockwell Automation 2755-L7, -L9 Scanners - Manual (Page 50)

Glossary
G–12
valid read indicator
An indicator on the:
scan head that indicates a scan has been processed by the decoder and at
least one label has been read.
decoder that indicates a processed scan meets the capture count and fields
per scan for at least one label.
output module that indicates a processed scan meets the capture count,
fields per package, and fields per scan for at least one label.
void(s)
The absence of ink within printed bars. The absence of ink within the
confines of a character.
W
wand
A hand held scanning device used as a contact bar code or OCR reader.
white zone – see quiet zone