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CHAPTER 2 INSTALLATION
Introduction
This chapter provides information for mounting and installing the SE955 scan engine, including physical and
electrical considerations and recommended window properties.
Grounding
CAUTION
An insulator can be inserted between the two chassis, and if metallic (non-magnetic) screws are used,
shoulder washers must be used to isolate the screws from the host. Non-metallic screws may also be used if
mechanical considerations permit.
ESD
The SE955 is protected from ESD events that may occur in an ESD-controlled environment. Always exercise
care when handling the module. Use grounding wrist straps and handle in a properly grounded work area.
Environment
The SE955 must be sufficiently enclosed to prevent dust particles from gathering on the mirrors, laser lens,
and the photodiode. Dust and other external contaminants eventually cause degradation in unit performance.
Motorola does not guarantee performance of the engine when used in an exposed application.
The SE955 chassis is connected to GROUND. If you are installing the SE955 to a hot or powered
host, you must isolate the two. The best integration practice is to avoid ground loops wherever
possible. There is a potential for creating a ground loop by grounding the SE955 chassis to the
ground of the system in which the SE955 is being integrated.
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