Electromagnetic compatibility (EMC)
20
Model 6476 User Guide
2 • Chassis specifications
Figure 4. Rear view of chassis
Figure 5. AC and DC rear power entry modules
Electromagnetic compatibility (EMC)
The Model 6476 ForeFront FullPipe is designed to provide the highest level of EMC performance—in terms
of both interference and susceptibility. The chassis has the following design features to mitigate the effects of
electromagnetic interference (EMI):
•
All gaskets, contacts, and contact surfaces are electrically conductive.
•
The mating surfaces of the EMC chassis and the EMC plug-in unit front panels and/or optional EMC filler
panels are also conductive by use of gaskets/strips.
•
All chassis and plug-in contact surfaces are connected to a common chassis ground.
Mating EMC gaskets and strips are used on the chassis, front panels of boards, and optional filler panels. An
EMC gasket is attached to the bottom of the chassis (front view), and an EMC strip is attached to the top.
Plug-in boards have the corresponding mates on the opposite side (see
figure 6
).
Alarm Card Slot
Rear Power Entry Slot
Blank panel
Rear Transition Module Slots
AC power module
DC power module
