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INSTALLATION
Copyright 2007
4-10
VME6U HARDWARE REFERENCE
4.6.2 Fiber-Optic Configuration
The basic SCRAMNet
+
Network communication architecture consists of SCRAMNet
+
boards tied together by paired sets of fiber-optic cable in a ring configuration. The
maximum recommended distance between each node of the network using this
configuration is approximately 300 meters. Maximum node separation using long-link
fiber is 3,500 meters. The recommended fiber-optic cable is 62.5/125 micron core multi-
mode fiber cable with ST connectors.
NOTE:
On a freshly powered system, a message from any node on the ring may be
necessary to establish the carrier signal.
4.6.3 Coaxial Cable Configuration
SCRAMNet
+
coaxial cable is composed of paired, shielded conductors terminated with
SMA connectors. Maximum node separation using coax is 30 meters. The recommended
coaxial cable is RG-58.
4.6.4 Fiber-optic Cables
The optional paired fiber-optic cables are shipped in a separate carton. The fiber-optic
cables are to be attached to the connectors on the SCRAMNet
+
board or the Cabinet Kit,
as appropriate. Remove the rubber boots on the fiber-optic transmitters and receivers as
well as the ones on the fiber-optic cables. These rubber boots should be replaced when
cables are not in use or in the event the node must be returned to the factory.
Figure 4-11 Fiber-optic ST Connector
It is important that the ends of the fiber-optic cable be kept clean. If there is an
exceptional amount of light-power loss experienced, the cable ends should be inspected
for cleanliness. Alcohol-based fiber-optic cleaning pads are available to remove minor
contaminants such as dust and dirt.
Figure 4-11 is a representation of a fiber-optic connector.
Содержание SCRAMNet+ SC150 VME6U
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