C-Sb Stagebox (Option); Stagebox (Option) - Solid State Logic C200 Installation Manual

Section 4

C-SB Stagebox (option)

The C-SB is a Mic/Line input/output stagebox which can be located remotely from the Centuri chassis. It operates at
48KHz sample frequency and is a 14U high, 462mm deep, rack-mounted unit.
At the front of the rack are nine slots for plug-in cards: six slots for mic/line input cards; two slots for line output cards
and one for the CPU card. At the rear is an auto-ranging switch-mode power supply.This will accept input voltages from
100–240v without adjustment.The PSU units provide two unswitched mains outlets via IEC 6A shuttered sockets. A 2nd
power supply unit may be fitted to provide redundancy.
Each micamp input card provides 8 channels, therefore a C-SB rack may be fitted with from 8 to 48 mic inputs. The line
output card also provides 8 channels but also features 4 channels of GPI relay closure. The CPU card is fitted with a
headphone socket to allow local monitoring of sources and also provides four analogue outputs via a 25-way D-type
connector.These outputs are assigned from the console and may be used for additional analogue feeds such as talkback or
SLS.
Each mic input is provided with a split output.This output functions in the same way as the BMA circuit. (ie. post pad, limiter
and 26dB buffer but pre the variable gain stage).The split outputs are available on 25-way D-type male connectors.
Remote stageboxes are linked to the Centuri core using duplex SC fibre-optic cable
ethernet cable for the control functions (gain, pad, filter etc.).The audio fibre links to a stagebox can be duplicated thus
(2)
creating audio redundancy for critical or on-air reliability. (Fibre Links for the Centuri rack should be specified at the time
of order).
The standard unit is fanless and so can be located within the live production area – subject to the following note. A low-
noise fan ventilation kit is available as an option.
Note:The stagebox racks are cooled by convection at the front of the rack.The air flow from bottom to top of the front panel
must not be obstructed in any way (cable guides are provided at each side to route cables away from the air intake).The air
temperature at the intake and at the rear PSU heatsinks MUST NOT exceed 30° Centigrade.
Special considerations need to be observed when fitting stageboxes into flight cases – refer to Appendix F.
The fibre optic cable is available in two types: for distances of up to 550m (multimode fibre) and distances of up to 2Km
(1)
(singlemode fibre).
The standard maximum limit for ethernet cable is 100m. For distances of over 100m ethernet repeaters may be needed.
(2)
Alternatively, the ethernet cable can be converted to fibre. This can then run the same distances as the audio fibre. Please
discuss specific requirements with SSL's Project Engineering Department.
3U Stagebox (option)
A smaller 3U Madi stagebox is available. Each unit can be fitted with up to 56 channels of I/O. Plug-in modules are available
for mic, line, AES, MADI and SDI. A 2nd redundant power supply can be fitted. Stageboxes are connected to the console
using one or two duplex optical MADI links.
System Components
for the audio data and a separate
(1)
Page 21