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Electrostatic Discharge ESD considerations
Laser safety and classifications and Electrostatic
Discharge (ESD) considerations
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365-372-304R7.1
Issue 1, November 2007
A - 5
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Electrostatic Discharge ESD considerations
ESD precautions
Industry experience has shown that all integrated circuit packs can be damaged by static
electricity that builds up on work surfaces and personnel. The static charges are
produced by various charging effects of movement and contact with other objects. Dry air
allows greater static charges to accumulate. Higher potentials are measured in areas
with low relative humidity, but potentials high enough to cause damage can occur
anywhere.
In order to prevent damage by electrostatic discharge the following precautions should be
observed when handling circuit packs:
•
Assume all circuit packs contain solid state electronic components that can be
damaged by ESD.
•
When handling circuit packs (storing, inserting, removing, etc.) or when working on
the backplane, always wear a grounded wrist strap such as the one shown in
or wear a heel strap and stand on a grounded, static dissipating floor mat. If
a static dissipating floor mat is used, be sure that it is clean to ensure a good discharge
path.
•
Handle all circuit packs by the faceplate or latch and by the top and bottom outermost
edges. Never touch the components, conductors, or connector pins.
•
Observe warning labels on bags and cartons. Whenever possible, do not remove circuit
packs from antistatic packaging until ready to insert them into slots.
•
If possible, open all circuit packs at a static safe work position, using properly
grounded wrist straps and static dissipating table mats. If a static dissipating floor mat
is used, be sure that it is clean to ensure a good discharge path.
•
Always store and transport circuit packs in static safe packaging. Shielding is not
required unless specified.
•
Keep all static generating materials such as food wrappers, plastics, and styrofoam
containers away from all circuit packs. Upon removal from bay, immediately put
circuit packs into static safe packages.
•
Whenever possible, maintain relative humidity above 20 percent.
To reduce the possibility of ESD damage, assemblies are equipped with grounding jacks
to enable personnel to ground themselves using wrist straps. See
while handling circuit packs or working on an assembly. The jack
CAUTION
ESD hazard
Summary of Contents for Data Multiplexer Explore 1665
Page 8: ... Contents v i i i 365 372 304R7 1 Issue 1 November 2007 ...
Page 12: ... List of figures x i i 365 372 304R7 1 Issue 1 November 2007 ...
Page 16: ... List of tables x v i 365 372 304R7 1 Issue 1 November 2007 ...
Page 24: ... About this document x x i v 365 372 304R7 1 Issue 1 November 2007 ...
Page 272: ... Final operations Operational tests 5 2 2 365 372 304R7 1 Issue 1 November 2007 ...
Page 326: ... Cleaning pluggable optics modules Fiber cleaning B 1 4 365 372 304R7 1 Issue 1 November 2007 ...
Page 408: ...I N 4 365 372 304R7 1 Issue 1 November 2007 Index ...