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MS-120X and MS-220X Integration Guide
Calculating The Usable Scan Length Method
Calculate usable scan length as follows (see
MS-120XFZY
MS-120XFZY
MS-220X
MS-2204VHD
MS-1207WA
where:
D = Distance (in inches) from the front edge of the host housing to the bar
code.
d = The host housing's internal optical path from the edge of the housing to the
front of the MiniScan scanner.
B = Internal optical path from the scan mirror to the front edge of the MiniScan
scanner.
A = Scan angle in degrees.
Note: Usable scan length determined by this formula, or 90% of scan line
at any working distance. This formula is based on good quality
symbols in the center of the working range and length of bar code.
2-14
L = 2 x (D+d+B) x Tan (A/2)
Table 2-1. Calculation Constants
Constants
1.17
1.17
1.53
1.53
1.17
Figure 2-12 on page
B
A
42°
Default Mode
30°
Narrow Mode
34°
34°
60°
2-15):
Notes
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