Microscan MS-890 User Manual page 294

Formulas for Number of Decodes
Single Line Picket Fence Calculation
For single scan line picket fence scanning (Top Offset
setting equal to Bottom Offset), use the following fomula:
ND = Number of Decodes (total applied to each symbol)
SW = Scan Width
SL = Symbol Length
SS = Symbol Speed
DR = Decode Rate
Example:
Angled Picket Fence Calculation
The number of complete scans for angled picket fence is calculated the same as that for
picket fence, with the exception that the scan width is shortened in proportion to scan tilt.
Angled Picket Fence
Orientation
A-30
Single Line Picket Fence
MS-890 Industrial Automation Scanner User Manual
Orientation