Force Computers SPARC CPU-54, Reference Manual

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SPARC/CPU-54 xxiii
Replacement/Expansion
Only replace or expand components or system parts with those recom-
mended by Force Computers. Otherwise, you are fully responsible for
the impact on EMC and the possibly changed functionality of the prod-
uct.
Check the total power consumption of all components installed (see the
technical specification of the respective components). Ensure that any
individual output current of any source stays within its acceptable limits
(see the technical specification of the respective source).
System Controller
If more than one system controller is active in the VMEbus system, the
board or other VMEbus participants can be damaged. Therefore, always
ensure that only one CPU board is configured as system controller in the
VMEbus system.
RJ-45 Connector
An RJ-45 connector is used for both telephone and twisted pair Ethernet
(TPE) connectors. Mismatching the two connectors may destroy your
telephone as well as your SPARC/CPU-54. Therefore:
• TPE connectors have to be clearly marked as network connectors.
• The TPE bushing of the system has to be connected only to safety
extra low voltages (SELV) circuits.
• The total length of the electric cable connected to a TPE bushing must
not exceed 100 meters.