Stageboxes & Fibre Links
The C-SB Stagebox utilises fibre-optic Madi cable for audio connection between itself and the Centuri processor. This
provides the advantages of noise immunity, reduced weight and bulk of wiring and the elimination of earth loops. A separate
control signal (for gain, pad, filter switching etc.) is carried over the SSL Ethernet network – this control signal can be
converted into fibre for runs longer than 100m.
The cables required for audio connection are duplex fibre with SC connectors (flat not APC type). A redundant connection
will require a second cable. A 2m duplex lead is provided as standard with each stagebox. The interfaces may be specified
as multimode or singlemode fibre types. The maximum cable length for a multimode Madi connection is 550m, and for
singlemode is 2km.
Longer fibre cables and/or ruggedised OB cable using adaptor panels/patch panels may be available to order. SSL is able to
suggest a range of fibre solutions although the facility may prefer to provide its own fibre installation. Details of fibre
installation options should be discussed with SSL’s Project Engineering Department prior to the time of order.
When Stageboxes are specified, it is recommended that a 10/100 Ethernet hub/switch is installed so as to provide isolation
for the remote network connection(s). A 1U rack mounting 16-port switch is available to order.
When locating Stageboxes at distances greater than 100m from the Centuri rack the Ethernet control cable will have to
be buffered – using an Ethernet repeater/switch – or, ideally, converted to fibre by using proprietary media converters.
Up to four Madi fibre interfaces. The Centuri Routing card can be fitted with
The BNC connector associated with each Madi port provides an output of system Wordclock.
Installation Wiring
Section 5
Page 37