Intermec MaxiScan 3100, Installation Manual

Page: 11 / 50

MaxiScan 3100 - Installation Guide 11
1 Before you start
Picket fence reading
Calculating pass-through speed
If your application reads moving bar codes, the MaxiScan 3100 ST / ML must have
time to read each bar code several times (5 scans is a good minimum). You can
calculate the pass-through speed as follows.
Ladder reading
Example:
code height = 2 cm; scan rate = 200 scans/second; number of scans on code = 6
2 code on scans of number
height code rate scan
speed through pass-
+
x
=
sec / cm 50
2 6
2 200
speed through - pass
=
+
x
=
2
+
- x
=
code on scans of number
width) code width (scan rate scan
speed through pass-