Cadac M16 Manuel d'utilisateur télécharger pdf (Page 5)

System Racks DSP and I/O Specifications

1 2 3 4 5 6 7 8 9

1 8730 coax communications interface card

2 8671 2 x 8 mic input on XLR3-F with signal

present LEDs

3 8672 16 x line input on TRS

4 8820 16 x line output on TRS

5 8788 16 x line input on XLR-3F

Not illustrated

8844 GPIO providing 8 x relay events - RS-232 MIDI In/Out - 2 x RS-485

8804 coax and bre based MADI I/O

8936 AES/EBU - 4 x stereo pair In - 4 x stereo pair out

8887 16 x line input on D-connector

8888 16 x line output on D-connector

88XX other proprietary digital audio format I/O card currently under development

6 8788 16 x line input on XLR-3F

7 8821 16 x line output on XLR3-M

8 8821 16 x line output on XLR3-M

9 8757 optical bre communications

interface card

DSP Rack

A single 4U 19” DSP rack contains the SHARC devices that process the EQ and

dynamics algorithms for each input and output channel, with capacity to cover

the maximum amount of processing required for 144-channel 72 bus operaon.

A full system requires 9 DSP cards, leaving 3 addional physical slots within the

rack allow for redundancy and future oponal enhancements.

The DSP algorithms have been carefully modelled to replicate the characteriscs

of Cadac’s tradional sound, whilst minimising audio latency and group delay

artefacts.

Two HSD comms cards are ed within all racks to provide for main and redundant

connecons to other I/O racks and the control surface.

I/O Rack

Mulple I/O racks can be congured within a single system, with each rack

capable of housing a user-congurable selecon of analogue and digital audio,

plus control interfaces. Each I/O rack is 10U high, which provides sucient

room for socket labelling and improved physical access, and is 12 slots wide.

All analogue and digital circuitry adheres to our strict policy

of providing opmum audio performance. As with Cadac

analogue consoles, all analogue I/O is hand-tuned to achieve

maximum common mode rejecon and output balance

performance.

A simple socket assignment grid located in the CCM allows

for assignments of the physical sockets in the IO racks to the

desired input or output modules on the control surface.

System Racks

The DSP rack, plus each I/O rack and the control surface, communicate using Cadac’s bespoke HSD comms protocol via coax or bre. Two independent

paths exist for communicaons redundancy. The proprietary protocol transfers all audio and data throughout the system.

Analogue Inputs

Input Impedance: 10k Ohm (electronically balanced)

Nominal Input Level: 0dBu

Max. Input Level: + 24dBu (balanced) + 10dBu (unbalanced)

Reference: + 4dBu = -20dBfs

CMRR: -85dB (50Hz - 10kHz)

Signal to Noise: -105dBu at zero gain

Dynamic Range: 119dB, 20Hz to 20kHz unweighted

THD: 0.009%@ 1kHz, 10dB gain, + 4dBu

Frequency Response: 5Hz to 65kHz: ± 0dB

Crosstalk: -80dB at 10kHz

Overall system frequency response at any analogue output: 5Hz to 45kHz (-3dB point)

Overall system noise at any analogue output: -95dBu (input and output faders @ 0dB)

Digital Processing

Internal Sampling Frequency: 96kHz 24-bit

Latency: analogue in analogue out < 800us

Line Level Gain: ± 10dB Input Trim

-65 to + 10dB Channel Fader

-75 to + 10dB Matrix Send

-75 to + 10dB Output Fader

Analogue Outputs

Impedance: < 100 Ohm (balanced)

Nominal Load Impedance: 600 Ohm

Nominal Output Level: 0 dBu

Max. Output Level: + 24dBu into 600 Ohm

Output Balance: -65dB (50Hz - 10kHz)

Output Reference Level: + 4dBu = -20dBfs

Dynamic Range: 119dB, 20Hz to 20kHz unweighted

THD: 0.008%@ 1kHz, 10dB gain, + 4dBu

Frequency Response: 5Hz to 80kHz: ± 0dB

Crosstalk: -80dB@ 10kHz

Dynamic Parameters

Gate Threshold: -70dBu to + 23dBu

Attack: 0.1ms to 250ms

Release: 50ms to 2.5s

Hold: 25ms to 5s

Compressor Threshold: -70dBu to + 23dBu

Attack: 100ms to 250ms

Release: 50ms to 2.5s

Hold: 25ms to 5s

Ratio: 1:1 to 25:1

Knee Hard or Soft selectable

Peak or RMS selectable

Makeup Gain: 0.0dB to + 30.0dB

Delay: Adjustable DelayTime: 0.1ms to 400ms

General

Power Supply: 19” 2U depth in mm 440 Requirements 90 - 250VAC 50/60Hz

Dimensions: input frame/output frame in mm (WxDxH) 820.8 x 944.65 x 391.5

CCM frame in mm (WxDxH) 455.04 x 944.65 x 391.5

I/O rack 19” 10U x 504mm depth

DSP rack 19” 4U x 504mm depth

CSM rack 19” 4U x 504mm depth

EMC

Complies with: EN55103-1: Emissions

EN55103-2: Immunity

EQ Parameters

4 band parametric (or 6 band 20Hz-20kHz)

LF: 20Hz to 200Hz inc switchable shelf

LMF: 60Hz to 600Hz

HMF: 400Hz to 4.0kHz

HF: 1.5kHz to 15.0kHz inc switchable shelf

All bands ± 18dB gain Q 1.0 to 3.0

HPF: 14.0Hz to 400Hz

LPF: 1.0kHz to 35.0kHz

6 7

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Cadac M16 Manuel d'utilisateur Page 5

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