digico D5 Live Quick Start Manual page 8

Setup & Installation Manual I/O Rack Units
Example Installation.......................................................................
This shows the standard "Stage 1" rack, with 56 Mic inputs and 8 line outputs.
Rack Module Connections ...........................................................
Audio connections to the Rack Modules are made using appropriate connectors for the type of module.
See the Connector Tables for a list of the different connectors used in the Rack Modules.
MADI Cabling Considerations .....................................................
The MADI (Multichannel Audio Digital Interface) standard was devised to operate using standard video
coaxial cable installations. For short cable runs of up to 5m, any good quality video cable should be
sufficient. The absolute maximum length of a MADI cable connection between the Worksurface and a
Rack Unit is 50m.
MADI uses 75ohm cable. 50ohm cable such as that used for computer networks is not acceptable.
The bandwidth of a MADI signal is such that care must be exercised when installing long cable runs. In
general, for maximum length cable runs, a high performance video cable such as RG59/U cable should be
used. If in doubt about the suitability of a particular cable type, a sample of the correct length can be tested
with the system prior to installation to prove its suitability.
The MADI signal should NEVER be routed via video distribution amplifier or switching arrangements, and
any form of plug and socket patching of MADI signals should be avoided if at all possible. There should be
NO common earth connection with other systems (including video) made via the sleeves of MADI cables.
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