Consider Read Range and Scan Width
MS-850 Raster Scanner User’s Manual
1-7
1–
Q
u
ickst
art
Step 6 Consider Read Range and Scan Width
a) Verify that the labels to be scanned will pass through the readable range. Opti-
mum decode rates can be expected at the center of the depth of field (halfway
between minimum and maximum read range) for a given bar code density.
b) Note The Approximate Scan Width At The Specific Distance The Labels Will Be
Passing Through.
Read range
is the distance from the scanner in which a passing label can be read.
For the MS-850, read range varies from
2
to
25
inches (standard model) depending
on label density and optical version of scanner.
Scan width
is that distance across the scan arc in which a label can be read. For a
moving label, the closer to the scanner, the shorter the time it will be within the
scan width, and hence the fewer scans it will receive.
Scanner
Direction
of travel
Read Range
2" to 25"
(5.08 to 63.5 cm)
Scan
Width
