Microscan MS-810, Руководство пользователя

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Chapter A
A-20
MS-810 Industrial Scanner User’s Manual
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Range
Adjusting the label’s range, if possible, is one of the quickest and most effective ways to
improve decode rates. However, in some applications you may need to select a less
than optimum range, or one that is beyond the fringes of the ranges listed in
“Range
Data” on page A-3 .
Scan Width
Increasing scan width will increase the number of scans in a picket fence oriented appli-
cation. Scan width is linked with scan range and changing one will usually require a
change in the other.
Label Speed
Applies to both picket fence and ladder oriented labels. If your application allows it,
slowing label speed (the time in seconds that a label is fully within the scan width of the
scanner) is an effective way to increase the number of scans.
Label Dimensions, Label Density, and Label Ratio
Not usually an option in most applications, but changes to label parameters can affect
number-of-scan calculations and possibly decode rates.
If your application allows it, shortening the length of a picket fence label means the
label will be in the scan range longer and hence receive a greater number of scans.
Increasing the height of a ladder label means it will receive more scans. Changing label
density and/or bar code ratio is another way ranges, decode rates, etc. can be altered.
Gain and Tracking
These adjustments, typically made by qualified technicians, are done from within the
Scanner Setup menu (see
“Setup Menu” on page 2-39 ). Changes to tracking will
generally have a limited effect on decode rates.