Symbol orientation, Tilt, pitch, and skew, Symbol orientation tilt, pitch, and skew – Rockwell Automation 2755 StrataScan Bar Code Readers User Manual

Page 24

Text mode
Original mode

3–3

Designing Your System

Publication 2755-6.13

Bar code symbols must have the correct aspect ratio to be read by the
reader. A scan line must cross every bar, space, and both quiet zones
on the same sweep.

Correct:
All bars are
crossed by a
scan line

Not Correct:

Some bars are not
crossed by a scan
line

Refer to the figure below for various package orientations. Tilt,
pitch, and skew can affect the scan aspect ratio, and as a result, can
affect the reader’s ability to read bar code symbols.

reader

Correctly Positioned
Symbol and Package

Tilted Symbol

Pitched Package
and Symbol

Skewed Package
and Symbol

Symbol Orientation

Tilt, Pitch, and Skew