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Site Requirements
Power Installation
The Power Supply (AC/DC) should be connected to an AC Outlet that is free of electrical noise (clean). A
qualified electrician can determine the amount of electrical noise on the AC line. See additional information
on power installation and restrictions under the Installation: Interface section of this manual.
Note: Using a switched AC outlet is recommended. The switch should be located on the operator’s side
of the checkout counter in close proximity to the scanner to facilitate service of the unit.
Checkout Counter Layout Considerations
When placing a scanner in a checkout counter, the following factors should be considered:
• Items should flow at a distance to the operator that maximizes comfort. The operator should not
need to stretch or strain to reach for and scan packages.
• The MS2421/MS2422/MS2431 can scan a bar code on five sides of a package. The packages
should flow into the scan area that provides the maximum reading performance. No lifting or
orientation of the items is necessary. A properly placed item diverter can maximize the flow of
packages.
• In what direction are the packages flowing? Most checkout counters are designed for left-handed
takeaway. If the operator is facing the vertical window of the scanner, packages flow from the
operator's right to left. The packages are in queue on the conveyor to the right and the bagging is
to the left.