Lucent Technologies WaveStar OLS 40G, Installation Manual

Page: 45 / 578

Issue 1.0 March 2001
1-13
365-575-389
Installation Manual Overall Installation and Test Considerations
Safety Instructions (Continued)
Electrostatic
Discharge (ESD)
Considerations Observe the following precautions when handling circuit packs to prevent damage
by ESD:
!
CAUTION:
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.
■
Assume all circuit packs and units contain solid state electronic
components that can be damaged by ESD.
■
Wear (always) a grounded wrist strap (shown in Figure 1-2) or wear a heel
strap and stand on a grounded, static-dissipating, floor mat when handling
circuit packs (storing, inserting, removing, etc.) or when working on the
backplane.
■
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.
■
Open (if possible) all circuit packs at a static-safe work position, using
properly grounded wrist straps and static-dissipating table mats.
■
Always store and transport circuit packs in static-safe packaging.
■
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.
■
Maintain (whenever possible) relative humidity above the 20-percent level.
■
Keep the electromagnetic interference (EMI)/ESD protective front covers
installed at all times except during an upgrade or maintenance procedure.
Once a circuit pack is replaced in the shelf, close the front cover
immediately.
(Continued on next page)