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Cadac C Series Hardware Overview

Remote stage racks
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Cadac Remote Stage Racks
CM-SR64 CM-SR40 CM-SR24
Hardware Overview
CM-SR644024_09-11-2023_Rev-25
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Summary of Contents for Cadac C Series

  • Page 1 Cadac Remote Stage Racks CM-SR64 CM-SR40 CM-SR24 Hardware Overview CM-SR644024_09-11-2023_Rev-25 Page. 1...
  • Page 2 Left Intentionally Blank CM-SR644024_09-11-2023_Rev-25 Page. 2...

  • Page 3: Table Of Contents

    Table of Contents Important Safety Information For US and CANADA Only General Precautions Declarations of Conformity Introduction Surface Overview Front Panel Controls Rear Panel Shipping Details Remote Stage Racks I/O Units Stage Rack Overview MegaCOMMS Protocol Stage Rack Features CM-SR Stage Rack Hardware Controls Front Panel Menu Structure Main Menu...
  • Page 4 Other Front Panel Audio I/O Headphones Maintenance Sub Menu Updating Firmware SR Stage Rack Firmware Upgrade Procedure Unit Factory Reset Unit Factory Reset Procedure Appendix Socket / Port Mappings against Physical Port Positions Technical Specifications Dimensions and Weights CM-SR24 CM-SR40 CM-SR64 Notes: CM-SR644024_09-11-2023_Rev-25...

  • Page 5: Important Safety Information

    Important Safety Information CAUTION: These servicing instructions are for use by qualified personnel only. To reduce the risk of electric shock, do not perform any servicing other than that contained in the User Manual unless you are qualified to do so. Refer all servicing to qualified service personnel. 1.

  • Page 6: General Precautions

    General Precautions • Do not place heavy objects on the stage rack, expose it to sharp objects or handle the stage rack in any way that may cause damage, e.g., rough handling and /or excessive vibration. • Do not subject the equipment to dirt, dust, heat or vibration during operation or storage. Never expose the stage rack to rain or moisture in any form.

  • Page 7: Declarations Of Conformity

    Declarations of Conformity The following pages show the individual declarations of conformity, for both the CE and UKCA marks, for the Cadac CM-SR24, CM-SR40 and CM-SR64 stage racks. CM-SR644024_09-11-2023_Rev-25 Page. 7...
  • Page 8 We, SCC Audio Limited, of 1 New Street, Luton, Bedfordshire, LU1 5DX declare under our of Conformity (DoC) sole responsibility that the Cadac CM-SR24 stage rack, as detailed below complies with CM-SR Series the provisions of the following UKCA Directives and is eligible to bear the UKCA mark:...
  • Page 9 We, SCC Audio Limited, of 1 New Street, Luton, Bedfordshire, LU1 5DX declare under our (DoC) sole responsibility that the Cadac CM-SR24 stage rack, as detailed below complies with CM-SR Series the provisions of the following European Directives and is eligible to bear the CE mark:...
  • Page 10 We, SCC Audio Limited, of 1 New Street, Luton, Bedfordshire, LU1 5DX declare under our of Conformity (DoC) sole responsibility that the Cadac CM-SR40 stage rack, as detailed below complies with CM-SR Series the provisions of the following UKCA Directives and is eligible to bear the UKCA mark:...
  • Page 11 We, SCC Audio Limited, of 1 New Street, Luton, Bedfordshire, LU1 5DX declare under our (DoC) sole responsibility that the Cadac CM-SR40 stage rack, as detailed below complies with CM-SR Series the provisions of the following European Directives and is eligible to bear the CE mark:...
  • Page 12 We, SCC Audio Limited, of 1 New Street, Luton, Bedfordshire, LU1 5DX declare under our of Conformity (DoC) sole responsibility that the Cadac CM-SR64 stage rack, as detailed below complies with CM-SR Series the provisions of the following UKCA Directives and is eligible to bear the UKCA mark:...
  • Page 13 We, SCC Audio Limited, of 1 New Street, Luton, Bedfordshire, LU1 5DX declare under our (DoC) sole responsibility that the Cadac CM-SR64 stage rack, as detailed below complies with CM-SR Series the provisions of the following European Directives and is eligible to bear the CE mark:...

  • Page 14: Introduction

    “high-agility” user interface utilising a wide format touch screen. Professional sound engineers familiar with other digital consoles will find the transition to the Cadac workflow quick and intuitive.

  • Page 15: Surface Overview

    Surface Overview The Cadac CM-SR range of stage racks are used as part of a larger audio system made up of multiple units: control surface and remote MegaCOMMS I/O device(s). The CM-SR stage racks include analogue and digital inputs and outputs that provide remote I/O capability for Cadac CM-Series audio mixing consoles.

  • Page 16: Rear Panel

    Rear Panel The only connections that are not on the front panel are the power connections for the dual internal, auto switching, power supplies. The connectors accept the standard and locking IEC cables. PSU connectors: The dual internal PSUs have an input range of 100-240 V AC~50-60Hz, the output requirements are +17 V, -17 V, +12 V, with a front mounted power switch.

  • Page 17: Shipping Details

    Shipping Details The stage rack is shipped in a carboard box with the following additional items: • 2 x IEC locking power cables CM-SR644024_09-11-2023_Rev-25 Page. 17...

  • Page 18: Remote Stage Racks I/O Units

    Remote Stage Racks I/O Units Various versions of remote stage racks are available: • CM-SR64: 7U unit: 56 mic / line inputs and 32 balanced line outputs, 8 AES3 inputs / outputs • CM-SR40: 4U unit: 32 mic / line inputs and 8 balanced line outputs, 8 AES3 inputs / outputs •...

  • Page 19: Stage Rack Overview

    Stage Rack Overview The CM-SR40, CM-SR24 and CM-SR64 are the first in a series of Cadac stage racks designed for the CM Series of consoles. The CM-SR40 unit is configured with 32 analogue inputs and 8 analogue outputs. The CM-SR24 has 16 analogue inputs and 24 analogue outputs, the CM-SR64 56 analogue inputs and 32 analogue outputs.

  • Page 20: Megacomms Protocol

    MegaCOMMS Protocol Communication between the stage racks and the control surface is via a proprietary Cadac high speed protocol called MegaCOMMS. The protocol uses high-speed 75 ohm coaxial cable terminated in BNC connectors or depending on the unit, via fibre optic cable using the duplex optical LC ports.

  • Page 21: Stage Rack Features

    Stage Rack Features Individual stage racks have: • CM-SR64 has in 7U: • 56 mic / line inputs on XLRs • 32 balanced line outputs on XLRs • 8 AES3 inputs and outputs on 4 balanced XLRs • CM-SR40 has in 4U: •...

  • Page 22: Cm-Sr Stage Rack Hardware Controls

    CM-SR Stage Rack Hardware Controls Front Panel 1. MENU button: Brings up the Main Menu screen on the control screen. 2. BACK button: Returns the user one level up from the currently display menu screen. 3. Rotary encoder with push function: Is used to navigate the menu structure displayed on the control screen [3].
  • Page 23 4. Menu Screen: The 2.4-inch colour display shows the stage rack control menu structure. Navigation is done via the Menu button [1] and Back button [2] and the rotatory encoder [3]. 1: The default screen display as the unit powers up 2: After start-up the main menu appears.
  • Page 24 6. Outputs: Between 8 to 32 balanced analogue audio outputs populate the stage racks, on XLR male sockets. Any output channel, insert send or direct out, may be routed to these. Characteristics are identical to the console. 4: Analogue Outputs on male XLRs b.
  • Page 25 8. MegaCOMMS: 4 x RG6 BNC connectors - in 2 pairs – and two duplex optical LC ports carrying all audio and control data between the control surface and other MegaCOMMS devices, such as stage racks and network bridges. 6: 2 x MegaCOMMS ports on BNC RG6 coaxial and LC optical transceiver SFP ports a.

  • Page 26: Menu Structure

    Menu Structure Main Menu After start-up, the Main Menu appears on the screen: 7: Main Menu structure The page title appears in red. The selectable items – in white - can be cycled through using the rotatory encoder [3] with the current function highlighted within the blue rectangle. When the required function is highlighted it is selected by using the push function of the rotatory encoder [3].

  • Page 27: Analogue Sub Menu

    Analogue Sub Menu When selected the Analogue Sub Menu appears on the screen: 8: Analogue sub menu By using the rotatory encoder [3] the Inputs or Outputs sub menu can be highlighted and by using the push function of the rotatory encoder [3] they can be selected. This will bring up the individual menus for the Inputs or Outputs on the stage rack, which are shown over the following pages.
  • Page 28 Inputs 9: Input port selection. The lines in pale blue are non-selectable within the option selected. 10: Shows selectable functions in white Selectable controls Port activates input port selection, any from 1 to 56 * Gain activates gain value selection, 0 to 64 in 0.5 dBs increments 48 V activates 48 V selection, which can be toggled On or Off for the active port activates pad selection, which can be toggled On or Off for the active port...
  • Page 29 Outputs 11: Output port selection 12: Shows selectable functions in white. The lines in pale blue are non-selectable within the option selected. Selectable controls Port activates input port selection, any from 1 to 32 * Mute activates Mute, which can be toggled between On and Off for the active port Monitor causes the active port to be routed to the HEADPHONES.

  • Page 30: Aes Sub Menu

    AES Sub Menu 13: AES mode selection 14: AES mode selection Selectable controls Port Pair activates AES pair 1, 2, 3 or 4 Direction selection between In or Out of active pair Clock when an output pair is selected the clock selection is enabled. Options are: External AES output pair are synchronised to WC BNC input Internal allows a choice of internal clock...

  • Page 31: Headphones Sub Menu

    Headphones Sub Menu 15: Headphone Mono mode selection 16: Headphone Stereo mode selection Selectable controls Monitor Mode activates selection between Mono or Stereo Mono: One monitor button appears on the analogue menus, selection made to monitor will be fed to the Left and Right channels of headphone output. Stereo: Two buttons appear on the analogue menus to allow any port to be selected for headphone Left and Right.

  • Page 32: Aux Sub Menu

    Aux Sub Menu 17: Aux menu Selectable controls Control switches control of the unit between the Console or Rack (the SR unit itself) All Mute all the mutes on the unit can be Muted or Un-Muted globally Auto Unmute selects whether auto un-mute is On or Off. Auto Unmute will unmute when the unit is reconnected to MegaCOMMS when in Snake Mode or console mode Fan Speed...

  • Page 33: Settings Sub Menu

    Settings Sub Menu 18: Setting menu Selectable controls Control switches control of the unit between the Console or Rack (the SR unit itself) Rack Mode activates the options of Console, Snake Head or Snake Tail Rack ID selects the rack identity number of 1 or 2. When two units are connected directly to a console each rack must have a different Rack ID.

  • Page 34: Connecting The Hardware

    MegaCOMMS unit will automatically switch its comms to Path B if communication is lost on Path A, as might occur if a cable is damaged. Note that the Cadac CM-J series system is fully functional in all respects if only one coax TX / RX or optical path is connected.

  • Page 35: System Connection Options

    MUST be connected to MegaCOMMS port A - NOT port B. Any redundancy link cables must use ports B on both units. One stage rack: Non-Redundant System using coaxial cables (or fibre optic) Cadac CM-J series Max Cable Run: Optical 2km...
  • Page 36 Two stage racks: Non-Redundant System using coaxial cables Cable Run ≤ 100m Cadac CM-J series SR series stage rack 2 Cable Run ≤ 100m SR series stage rack 1 One stage rack: Redundant System using coaxial cables Cadac CM-J series Cable Run ≤...
  • Page 37 Snake Mode between two racks: Non-Redundant System using coaxial cables SR series stage rack: Snake Head SR series stage rack: Snake Tail Cable Run ≤ 100m Snake Mode between two racks: Redundant System using coaxial cables SR series stage rack: Snake Head SR series stage rack: Snake Tail Cable Run ≤...
  • Page 38 Console and two stage racks: Non-Redundant System using fibre optic cable Cable Run ≤ 2 km Cadac CM-J series SR series stage rack 2 Cable Run ≤ 2 km SR series stage rack 1 Console and one stage rack: Redundant System using fibre optic cables Cadac CM-J Cable Run ≤...
  • Page 39 Console and two stage racks: Redundant System using fibre optic cables with coaxial linking racks Cable Run ≤ 2 km SR series stage rack 2 Cadac CM-J series Coaxial Linking Cables ≤ 100m Cable Run ≤ 2 km SR series stage rack 1 NOTE: With the system setup above MegaCOMMS PORT A on both stage racks MUST be connected to the console.
  • Page 40 Snake Mode between two racks: Non-Redundant System using fibre optic cables SR series stage rack: Snake Head SR series stage rack: Snake Tail Cable Run ≤ 2 km Snake Mode between two racks: Redundant System using fibre optic cables SR series stage rack: Snake Tail SR series stage rack: Snake Head Cable Run ≤...
  • Page 41 Console and daisy chaining two racks using coaxial cables SR series stage rack 2 Cadac CM-J series Cable run ≤ 100m Cable run ≤ 100m SR series stage rack 1 NOTE: With the system setup above MegaCOMMS PORT A on the first stage rack MUST be connected to the console.
  • Page 42 NOTE: Only RG6 video cable suitable for 3G HD-SDI (High-Definition Serial Digital Interface) should be used for the Cadac MegaCOMMS connections. The cables should be terminated in BNC connectors of the appropriate type, and total system cable run should not exceed 100m (surface-to- stage rack or stage rack to stage rack as a snake).

  • Page 43: Word Clock In

    Word Clock In The stage racks cater for digital audio I/O in the form of eight AES3 inputs and eight AES3 outputs. 21: AES and Word Clock In connector The AES3 outputs have Sample Rate Converters (SRCs) and can operate at any frequency required by applying an external clock source to the WORD CLOCK IN connector.

  • Page 44: Stage Rack Routing

    Stage Rack Routing The routing within the stage rack is done using the on-screen Input and Output Assign functions on the console. 23: Cadac CM-J series Routing Screen CM-SR644024_09-11-2023_Rev-25 Page. 44...

  • Page 45: Custom Naming

    Custom Naming The SR stage racks can be given a custom or a “friendly” name to help identify individual racks, for example “Stage Right”. The name can be up to 15 characters long. The rack name will appear on at the top of the Rack Menu and, providing the racks are connected to the console via Ethernet, above either Rack 1 or Rack 2 on the console routing page.
  • Page 46 26: The IP address displayed on the SR stage rack needs to be typed into the web browser. When the appropriate client is found then the screen will display the above At the same time the stage rack firmware update menu will appear on the PC browser window (Note not all web browsers maybe compatible): Stage Right_ 27: PC browser window –...
  • Page 47 The custom name for the SR rack will appear on the console’s routing page above the rack 1 and rack 2 slots. The slots will, however, still retain the type of rack that is attached to MegaCOMMS port A (rack 1) and port B (rack 2): 28: Custom Name CM-SR644024_09-11-2023_Rev-25...

  • Page 48: Connector Details

    Connector Details Analogue Inputs: 3-pin female XLR connectors. The inputs are electronically balanced and are suitable for connection of either microphones or line level sources. Input impedance is 1.2 kohms in Mic Mode, or 10 kohms in Line Mode, Mic or Line mode being selected from the assigned channel’s Input Gain panel.

  • Page 49: Other Front Panel Audio I/O

    AES3 digital outputs: Four AES3 digital audio outputs are available at the rear of the control surface on 3-pin XLR male connectors. The outputs are balanced, with a characteristic impedance of 110 ohms. Connections to these outputs should always be made using cable specifically designed for digital audio.

  • Page 50: Maintenance Sub Menu

    Maintenance Sub Menu 29: Maintenance menu The Maintenance window will confirm the rack type: CM-SR64 or CM-SR40 or CM-SR24. It will also show the unit’s current software version, along with the FPGA firmware version installed. These are highlighted in red, which indicates these are for information only and cannot be selected (or have the option of being selected) from the menu.

  • Page 51: Updating Firmware

    This can be done by connecting an Ethernet cable to the front panel [12] linked to a Windows PC. Download the latest firmware version from www.cadac-sound.com (software is on the Support / Software Download page), SR Stage Rack Firmware Upgrade Procedure 1.
  • Page 52 32: Successful connection to client server The IP address displayed on the SR stage rack needs to be typed into the web browser. The stage rack firmware update menu will appear on the PC browser window (Note not all web browsers maybe compatible). 33: PC browser window There are two firmware elements that may be updated: •...
  • Page 53 The unit will then need to be powered off (ideally disconnected from the power) Reconnect the power Before restarting the unit press and hold the MENU [1] and BACK [2] buttons on the front panel Now power up the unit – still holding the MENU and BACK buttons 34: Press both buttons simultaneously Wait for the following screen to appear before releasing the MENU and BACK buttons: 34: Unit resetting to factory defaults...
  • Page 54 10. When the unit has reset it will display the Main Menu 35: Unit has finished resetting to factory defaults 11. The unit has now successfully completed the firmware update If the unit fails to update it will return to the menu without restarting. If the unit continually fails to update please contact your local distributor.

  • Page 55: Unit Factory Reset

    Unit Factory Reset The SR stage racks may, on the rare occasion, need a factory reset as the screen may have become locked and the menu has become inaccessible. This could be a result of a failed firmware upgrade. A factory reset can be done, without need of accessing the Maintenance Sub Menu and the selecting Reset Rack Device function, by following the procedure below.

  • Page 56: Appendix

    Be aware that port numbers do not match the console view of the stage rack port assignments, these are defined as below for each individual stage rack. Output Sockets Input Sockets AES Sockets 38: Cadac CM-SR64 Output Sockets Input Sockets AES Sockets 39: Cadac CM-SR40 CM-SR644024_09-11-2023_Rev-25 Page.
  • Page 57 Input Sockets Output Sockets AES Sockets 40: Cadac CM-SR24 CM-SR644024_09-11-2023_Rev-25 Page. 57...

  • Page 58: Technical Specifications

    4 x XLR AES/EBU inputs 4 x XLR AES/EBU outputs Neutrik connectors Tolerant of 48 V connection and short circuit protected Comms 2 x Cadac MegaCOMMS on: • 4 x BNC connectors • 2 x duplex optical LC ports 1000BASE-LX/LH SFP 1310nm 10km DOM Duplex LC...
  • Page 59 Audio S pecification Sample Rate 96 kHz Processing Delay Sub 0.4 millisecond latency through compl ete signal chain Internal Processing 40-bit floating point ADC/DAC 24-bit Frequency Response 20 Hz to 44 kHz + 0.5 / -1.5 dB THD+N better than 0.005% @unity gain, 10 dB input at 1 kHz Channel Separation better than 90 dB <...

  • Page 60: Dimensions And Weights

    Dimensions and Weights CM-SR24 482.6 CM-SR40 482.6 CM-SR24 and SR-CM40 436.2 349.90 364.90 Weight: 7.1 kgs / 15.65 lbs CM-SR644024_09-11-2023_Rev-25 Page. 60...

  • Page 61: Cm-Sr64

    CM-SR64 482.6 436.2 349.90 364.90 (Dimensions in mm) Weight: 10.2 kgs / 22.48 lbs CM-SR644024_09-11-2023_Rev-25 Page. 61...

  • Page 62: Notes

    Notes: CM-SR644024_09-11-2023_Rev-25 Page. 62...
  • Page 63 One New Street whether mechanical or electronic, without the written permission of Cadac. Luton Due to Cadac’s policy of continual Bedfordshire improvement Cadac reserves the right to England alter features, appearance and specifications without notice.

This manual is also suitable for:

Cm-sr64Cm-sr40Cm-sr24

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