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MLA System
USER GUIDE
MLA System
User Guide V2.1
140
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Network
Network cables fall into two categories, U-Net and Ethernet. U-Net is the network protocol that is used to communicate with all
MLA devices; the Merlin Processor and all cabinet types; MLA, MLD, MLA Compact, MSX, MLX and DSX. The protocol is broadly
similar to Ethernet but with a number of significant enhancements. Communication is over Cat5e cable.
Ethernet is used for communication between the control PC and all Merlins and as any Ethernet network uses Cat5e.
It is essential that all network cables are just as robust as any other cable being used which applies both to the type of cable and
connectors used. Cable therefore on all network cables is Belden 1305A rugged tour grade Cat5e. The standard connector for
Ethernet is RJ45 however this is completely unsuitable for touring applications as it is not designed for frequent connection and
disconnection and is not IP rated for use outdoors. After considerable research the connector chosen was a Lemo K Series pattern
8-pin connector manufactured by ODU. This is specially designed for high-speed data, is extremely rugged and rated at IP67. It
is also very quick and easy to connect and disconnect with a very positive latch. Lemo style connectors have been used very
successfully in the touring industry, with radio microphone transmitter packs as the most obvious example, so they will be
familiar to most system technicians. The ODU version has a particularly rugged over-moulded cable restraint which has proved
to make the cables incredibly resilient. They cannot be user-maintained but historically failures have been minimal. The K Series
was recommended to Martin Audio as it is used for data telemetry in Formula One racing cars. They withstand the vibration,
dust, dirt and moisture in that most challenging of environments so should withstand the rigors of the touring industry very
easily.
All network connectors are identical whether they are used for U-Net or Ethernet. The relevant connections are brought out
onto chassis mount ODU connectors on the patch panel installed in Master and Slave racks. There are several lengths available
to suit all applications;-
Содержание MLA
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Страница 151: ...MLA System USER GUIDE MLA System User Guide V2 1 151 This is the narrow section corresponding to the rear wall ...
Страница 152: ...MLA System USER GUIDE MLA System User Guide V2 1 152 This is the response on the ceiling ...
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Страница 436: ...MLA System USER GUIDE MLA System User Guide V2 1 436 The stack is now ready for the next cabinet ...
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Страница 455: ...MLA System USER GUIDE MLA System User Guide V2 1 455 The finshed 6 box ground stack system ...