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Calculating the Usable Scan Length Method
Calculate usable scan length as follows (see
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.
L = 1.8 x (D+d+B) x Tan (A/2)
Table 2-1. Calculation Constants
Constants
MS 1207FZY (Default Mode)
MS 1207FZY (Alternate Mode) 1.17
MS 1207WA
MS 2207
MS 2207VHD
MS 3207
Figure 2-8 on page
B
1.17
42°
30°
1.17
60°
1.53
34°
1.53
34°
1.93
34°
Installation
2-12):
A
2-11
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