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Centuri – Micamp Card
The Microphone input card (generally known as the BMA or ‘Broadcast Mic Amp’) provides 12 input channels.
The input is via a female Varicon (EDAC) connector. Mating connectors can be supplied as a cost option.
Each of the mic inputs has a buffered split output. The buffering takes place after the input pad, the RFI filter
and the 25KHz low-pass filter but before the variable gain stage. The split output has a gain of 26dB above the
mic input level (or 6dB with the pad in circuit) but is unaffected by the consoles’ mic gain setting. The split
outputs are available on two female 25-way D-type connectors.
Micamp cards are normally fitted to the front of the Centuri. If more than 48 channels are required then rear
mounting cards can be specified as a special order.
Refer to section C for connector pinouts.
Centuri – Analogue I/O Card
The Analogue card provides 24 channels of balanced line-level input and output. At least one Analogue card will
need to be included if analogue monitor amplifiers are being used. The connectors used are Canon DL96 types.
Mating connector kits and a contact crimp tool can be supplied (as cost options). This card is rear mounting only.
See page 57 for the DL pinout.
Centuri – Digital I/O Card
The Digital I/O card is available in two versions: 110Ω and 75Ω. Both types provide 64 channels (32 AES/EBU
pairs) of digital input and output. The 110Ω card provides balanced output signals whereas the 75Ω card is
unbalanced for correct matching to co-axial cables. Sample rate conversion is available on every input so the card
can accept input rates from 32kHz to 96kHz. The connectors are all D-25 type females and mating connectors can
be supplied (as a cost option).
A breakout panel is available as an option for the 75Ω card – this converts D-25 connectors to chassis BNC plugs
and comes with 1m connecting looms. These panels should be mounted behind the Centuri rack; they cannot be
remotely located because the linking cables are unbalanced.
Front mounting versions of the digital cards are available to special order only.
Centuri – Madi Card (Copper version)
The MADI I/O card can operate in two ways: either as a 56 channel varispeed I/O multitrack interface (at 48kHz
± 12.5%) or as a 64 channel fixed 48kHz link (station router). In either case a source of sync is required. The sync
source can be AES, Word sync or self clocked from the MADI bitstream. This sync source must be derived from
the same station video reference as used for the CPU card sync input.
The card is fitted with dual MADI connections – MADI A and MADI B. The outputs are duplicates of the MADI
signal so that a safety backup can be made without having to use external distribution. For the inputs, MADI A
has priority but MADI B will take-over if the A signal is lost.
Centuri – Madi Card (Fibre version)
Operates exactly the same as the copper version but the MADI connectors are now singlemode or multimode SC
optical types. The fibre type must be specified at time of order.
Centuri – GPI/O Card
The optional GPI/O card provides 60 GPI inputs and outputs. Inputs (which can trigger many console functions
including channel faders and cuts) are opto-isolated. The outputs are provided by relay closure. Access is via 25-
pin D-type connectors; inputs are male and outputs are female.
Only one GPI/O card can be fitted to the Centuri rack.
System Components
Section 4
Page 19