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Computer Group Literature Center Web Site
General Information
1
For more detailed information on the VME bus backplane, refer to the
VME Extensions Standard, VITA 1.1-199X, which can be found at
http://www.vita.com.
Safety and Regulatory Compliance
All systems integrated by Motorola meet the standards claimed for those
systems with regard to electromagnetic interference (EMI), radio
frequency interference (RFI), and overall safety. It is possible, however, to
install circuit boards and drives in the MVME956AC enclosure that
produce a system not in compliance with the applicable emission limits.
Note
It is the integrator’s responsibility to design a payload that
meets the desired standards.
When Motorola integrates a payload into the MVME956AC enclosure, it
is often necessary to make changes to the payload in order for the system
to pass RFI standards. The following is a list of conditions that in general
must be met in order to achieve compliance with RFI standards:
❏
At a minimum, the chassis must be connected to earth ground
through the safety ground wire in the power cord to meet safety and
other requirements.
❏
All external I/O cables should be high-quality shielded types with
metal shell connectors.
❏
Connectors on VME modules should be metal shell types,
connected to earth ground. This is accomplished through the
conductive panels in contact with the chassis rails.
❏
All VME modules should have conductive panels to ensure a good
RF ground with the conductive chassis rails.
❏
Blank panels with EMI gaskets should be installed over all unused
chassis slots to ensure there are no RF leaks in the chassis.
