top of page

FAQs

This is an online repository of FAQs, in-depth "how to" Knowledge Base guides and Technical Bulletins regarding Cadac CM-Series products

Open Book
  • What is the latency through the CM-J50?
    Total through-system latency from inputs on stage to outputs, including all the console's processing and A-D / D-A conversions, is 37 samples (@ 96 kHz), or just under 400us or 0.4 milliseconds
  • What type of optical transceivers do I need for the CM-J50 and the CM-SR series racks?
    The duplex optical LC ports on the CM-J50 and the CM-SR series racks require the use of 1000BASE-LX/LH SFP 1310nm 10km DOM Duplex LC MMF/SMF compatible transceiver modules. Technical Info: 1000BASE-LX/LH Small Form-factor Pluggable (SFP). Standards based Gigabit Ethernet. 1.25 Gbit/sec line speed. Operating distance up to 10km. Transmitter wavelength 1310nm. Industry-standard LC duplex connector. Singlemode Fibre (SMF).
  • What type of optical fibre do I need for connecting the CM-J50 to the CM-SR stage racks?
    You will need single-mode fibre (SMF) to connect the CM-J50 and the CM-SR series of stages racks. SMF is designed to carry a high bandwidth of data over very long transmission distances. With SMF data transmission is handled by a single glass fibre strand, unlike multi-mode fibre (MMF) where multiple glass strands are used, and has much tighter optic tolerances than multi-mode fibre. Single-mode fibre is also referred to as uni-mode fibre or mono-mode optical fibre.
  • What spec of coaxial cable should I use for MegaCOMMS?
    Cadac specify RG6 3G 75 Ohm 18 AWG solid bare copper, super high-resolution coaxial to ensure that the cable is capable of handling over 4 times the data required for MADI.
  • What is the best practice for MegaCOMMS cabling when designing a system?
    When using coaxial cable, it is best practice NOT to tape power cables to the coaxial cable, preferably keep all power cables away from the coaxial cable. Failure to so could lead to interference with the signal and result in unwanted audio artefacts, or in the worst case, total loss of audio. When using coaxial it is also highly recommended that all cables be connected to the appropriate units prior to powering them on. When designing a non-redundant system, it is extremely important to ensure that the total cable runs do not exceed 100m for coaxial and 2km for fibre optic. When using redundancy for a single stage rack, the cable runs (fibre optic or coaxial) from MegaCOMMS Port A and B must be of similar lengths - up to a maximum of 100m for coaxial or 2km for optical. The coaxial link cables connecting the two stage racks must not exceed 100m. The coaxial link cables connecting the two stage racks must not exceed 100m. When using redundancy for two stage racks, the optical and coaxial runs from the console to the stage rack must not exceed 2km or 100m respectively - and must be of similar lengths. The coaxial link cables connecting the two stage racks must not exceed 100m. When designing a non-redundant, redundant or daisy chain system, MegaCOMMS port A or B from the console MUST be connected to MegaCOMMS port A - NOT port B - on both stage racks. Any redundancy link cables must use ports B on both units.
  • Can I connect to a Dante network?
    The use of the CM-DT64 Network Bridge allows MegaCOMMS to connection to a Dante network. The 1U CM-DT64 can work at either 96 kHz or 48 kHz and can handle up to 64 inputs and outputs and also has 128 channels of SRC as well as its own independent word clock.
  • Can I connect to a MADI network?
    The use of the CM-MD64 Network Bridge allows MegaCOMMS to connection to a MADI network. The 1U CM-MD64 can operate at 96 kHz or 48 kHz and can handle up to 64 inputs and outputs and is equipped with 128 channels of SRC as well as its own independent word clock.
  • Can I use Waves with the CM-J50?
    The Cadac CM-J50 comes equipped as standard with an integrated 64 x 64 Waves SoundGrid® interface. This interface can be used to route audio in and out of the console to a Waves SoundGrid® network, either for effects* and plug ins* or for multitrack recording and playback. For more information about Waves please visit: waves.com *Waves licenses will be required, please see waves.com for more details.
  • The CM-J50 fails to load successfully and the log files says memory corrupt, what do I do next?
    Insert a USB key in to the CM-J50 with console software on (version is irrelevant) to access the Command Centre: Press Clear FailSafe – This will reset the registry and delete centre surface cache Restart Console If Clear FailSafe failed to fix the issue, insert a USB key in to the console with console software on to access the Command Centre: Press ‘CMD’ Using a USB keyboard Type in ‘lodctr /r’ then Enter It should give you a message confirming memory counters reset. Restart Console If you cannot access the Command Centre with a USB key attach a USB keyboard to the console: Press Ctrl+Alt+Del Open ‘Task Manager' Press Alt+f Type ‘cmd’ Press Enter Type in ‘lodctr /r’ then Enter It should give you a message confirming memory counters reset. Restart Console
  • The CM-J50 starts up in Debug Mode, what do I do next?
    Insert a USB key, containing the console software, in to the CM-J50 in order to access the Command Centre. Restart Console Press ‘Program Upgrade’ This should re-install the console software that is on the USB key and remove the debug code
  • How do I access Explorer on the CM-J50?
    This can be done by inserting a USB key, with the console software (version is irrelevant) on it, in to the console, this will open the Command Centre and then press ‘Explorer’. It can also be done by sing a USB Keyboard: Press Ctrl+Alt+Del Open ‘Task Manager’ Press Alt+f Type ‘explorer’ and press enter
  • How do I download the CM-J50’s log files?
    Insert a USB key containing a copy of the Console Software. This will automatically open the console’s Command Centre. Double press the Expert View button found at the bottom right-hand corner of the large screen. Press Copy Logs; the console will then download the log files to the USB key. This may take some time if there are a lot of log files. It is advised that you delete the logs – press Clear All Logs – if it takes more than a couple minutes to copy. Do not do this if you are using the desk, only if you are finished with it, as it closes the console software down in order to delete the logs. Remove the USB key from the console. Zip-up the files and email them to Cadac’ service department, or your local distributor, for diagnostics.
  • How do I stop the console programme running on the CM-J50?
    Insert a USB key in to the console with console software on (version is irrelevant) to access the Command Centre Press Clear all Logs Using a USB Keyboard Press Ctrl+Alt+Del Open ‘Task Manager’ and ‘End Task‘ for the console software
  • How do I upgrade the software on the CM-J50?
    Important: Backup all show files that are on the console Download the Console Software file from the relevant link above Then unzip this file into the route directory of an empty USB stick Power up the console and wait for it to boot up Plug the USB stick into a USB port on the console The new Simple Command Centre Screen will appear on the main screen Press Software Update then wait till done Press Power Down and remove USB Make sure the console is completely OFF then Power Up the console After this you should have the latest version of software on your console.
  • How many I/O boxes can I connect to the rear of the CM-J50?
    As standard the CM-J50 has two pairs of MegaCOMMS connectors (with coax or optical options) on the rear. This will allow up to two MegaCOMMS compatible units to be connected to the console.
  • I have attempted a factory reset but the CM-J50 is still having issues on start-up. What should I do?
    If you have attempted a factory reset but you are still having issues on start-up with your console try the following procedure as some of the folders in Windows may have been inadvertently locked. Download the latest version of the Console Software Then unzip this file into the route directory of an empty USB stick Plug the USB stick into a USB port on the console The Command Centre with appear on the main screen On the Command Centre press the red button Clear FailSafe You must then also do a Clean Program Update You then need to power down (ideally power cycle the PSUs) your console then restart the console All the folders will now be unlocked and this should resolve the start-up issues Note: It is also recommended if you have been running an older software version on the console that a Program Update should also be done If the Loader Upgrade button is highlighted in green then please press it Remember you then need to power down (ideally power cycle the PSUs) your console then restart the console
  • I have tried to upgrade my console with new software and the upgrade seems to have failed and the console no longer works. What should I do now?
    The best course of action is to do what is known as a Total Recall. A Total Recall will completely wipe the console of its current software version and allow you to then re-install the console software. Follow the steps below and you will end up with a working console. BUT before you do this procedure save any show files that are on the console as they will be deleted. 1. Download the CM-J Console Software from the website 2. Then unzip this file into the route directory of an empty USB stick 3. Plug the USB stick into a USB port on the console, while the console is switched on 4. The Command Centre with the upgrade menu will appear on the main screen If the Command Centre does not start, connect a USB keyboard to the console: Press CTRL-ALT-DEL Navigate to Start Task Manager Press ALT-F Type “Explorer” Press Enter Go to step 6 5. Double Tap the button Expert View in the bottom right-hand corner of the screen 6. Press the icon highlighted in red Total Recall, this will restart the console 7. Remove the USB stick when the console shuts down 8. The console will reboot, select English when prompted to choose language 9. Next the console will indicate that it cannot find any software – there will be a large red warning screen, do not worry. It says invalid console because the Total Recall has removed all the console data. 10. At this point insert the USB, and the console will shut down 11. Remove the USB when the console shuts down 12. The Console will then reboot automatically. When the console loader appears, it will try to load the software and eventually say ‘Please Re-load Software’ in the black text box, at this point insert the USB key once more. 13. Then command centre will then appear, press Update Software, and then Power down and remove the USB 14. Restart the console. This restart will NOT work 15. Turn the power off to the console and then back on, followed by turning the console back on 16. On the next start up, the software will be fully installed, and the Total Recall has been successfully performed
  • The CM-J50 will not update the user options for start-up. What should I do?
    If you are finding that you are having problems updating Cues on your console try the following procedure as some of the folders in Windows may have been inadvertently locked. Download the latest version of the Console Software Then unzip this file into the route directory of an empty USB stick Plug the USB stick into a USB port on the console The Command Centre with appear on the main screen Press the Expert View button in the bottom right-hand corner of the screen On this screen press the red button Clear FailSafe You then need to power down your console (ideally power cycle the PSUs) then restart the console All the folders will now be unlocked and there should now be no issues when updating your Cues Note: It is also recommended if you have been running an older software version on the console that a Program Update should also be done It is also recommended if you have attempted a Factory Reset then a Clean Program Update should also be done If the Loader Upgrade button is highlighted in green then please press it Remember you then need to power down your console (ideally power cycle the PSUs) then restart the console
  • What is the difference between a Project, Show and a Cue?
    The difference between the three are as follows: Projects store all console and user settings, shows and cues. Shows stores all the cues Cues store the audio data
  • My Cues will not load properly. What should I do?
    If you are finding that you are having problems loading show files on your console try the following procedure as some of the folders in Windows may have been inadvertently locked. Download the latest version of the Console Software Then unzip this file into the route directory of an empty USB stick Plug the USB stick into a USB port on the console The Command Centre with appear on the main screen Press the Expert View button in the bottom right-hand corner of the screen On this screen, press the red button Clear FailSafe You then need to power down your console (ideally power cycle the PSUs) then restart the console All the folders will now be unlocked and there should be no issues when loading your Cues Note: It is also recommended if you have been running an older software version on the console that a Program Update should also be done It is also recommended if you have attempted a Factory Reset then a Clean Program Update should also be done If the Loader Upgrade button is highlighted in green then please press it Remember you then need to power down your console (ideally power cycle the PSUs) then restart the console
  • My Show files will not load properly. What should I do?
    If you are finding that you are having problems updating Cues on your console try the following procedure as some of the folders in Windows may have been inadvertently locked. Download the latest version of the Console Software Then unzip this file into the route directory of an empty USB stick Plug the USB stick into a USB port on the console The Command Centre with appear on the main screen Press the Expert View button in the bottom right-hand corner of the screen On this screen press the red button Clear FailSafe You then need to power down your console (ideally power cycle the PSUs) then restart the console All the folders will now be unlocked and there should now be no issues when updating your show files Note: It is also recommended if you have been running an older software version on the console that a Program Update should also be done. It is also recommended if you have attempted a Factory Reset then a Clean Program Update should also be done. If the Loader Upgrade button is highlighted in green then please press it. Remember you then need to power down your console (ideally power cycle the PSUs) then restart the console
  • What are the shut down options?
    To shut down the console press the power button and the console will give you 3 power down option are Yes, Warm-Start and No. If you choose “Yes” the console will shut-down. If you choose “No” the console will return to the previous operating screen. If you choose “Warm-Start” the console reboots whilst keeping the console running. When the console starts up you must switch on the master fader and return it to where you had it before, or would now like it, and then you must select either to recall the previous snapshot, or if you press no, select a cue. Doing neither of these will result in the console having no connection to the audio!
  • What do the start up options mean?
    The console will ask if you want to reload the state of the console when the power went off – Power Off Snapshot. (This is not the last saved cue, this is the state that the console was in when it was last shut down.) There are three options; Reload the last known state of the console Recall any one of the cues on the cue list Start with the console with only the user defined options retained – e.g user assignable buttons, safes etc
  • What’s the difference between Programme Upgrader and Clean Programme Upgrader?
    Clean Programme Upgrader will reset all the console defaults and erase all the show files in the console. Program Upgrader will leave the existing show files in the console’s memory intact.
  • When upgrading the console software a window appears stating “Console Launcher had stopped working”, what do I do next?"
    Occasionally during upgrading the software the desks starts up and halfway into copying the files on the launcher a Windows error appears saying the Console Launcher has stopped working. To fix this switch off the internal supply shutting down the console, then switch on the PSU and then the console. The console then checks for a “bad shutdown” and this will fix the error.
  • What is MegaCOMMS?
    MegaCOMMS is Cadac’s proprietary digital audio protocol. MegaCOMMS is a robust, TDM (time division multiplex) system. Control data is embedded within the data stream, so that no audio channels have to be sacrificed for this purpose. The high bandwidth available means that the current implementation of MegaCOMMS can carry 128 channels of 24-bit, 96 kHz audio, plus control data, plus clock, bi-directionally, up to 150 metres via a pair of RG6 coaxial cables or 2000m on optical.
  • Will MADI coaxial cables be OK to use?
    NO – unless the cables you are using are RG6 3G 75 Ohm 18 AWG solid bare copper, super high-resolution coaxial. MegaCOMMS requires a cable that is capable of handling over 4 times the data needed for MADI.
  • Why are there red and blue glowing coaxial connectors on the consoles and rack units?
    The glowing BNC connectors on the rear of the console and on the rack mount units are MegaCOMMS ports. The red – Rx – connectors are the receive or “in” ports The blue – Tx – connectors are the transmit or “out” ports
  • Why does Cadac use RG6 coaxial cables rather than Ethernet?
    RG6 is a very robust cable and the BNC connectors used are professional grade connectors and we are not limited to 100m runs of Ethernet technology – MegaCOMMS will easily run up to 150m on coaxial.
  • What resolution do I need on my PC to run the CM-Editor offline editor correctly?
    The CM-Editor's native resolution on the PC is 1920 x 1080, with the scale at 100%. If the PC is not set to this resolution it will look distorted and might be difficult to use.
  • Quick Reference Guide for Waves
    The Cadac CM-J50 is equipped as standard with an integrated 64 x 64 Waves SoundGrid® interface. This interface can be used to route audio in and out of the console to a Waves SoundGrid® network, either for effects* and plug ins* or for multitrack recording and playback. Below is a quick reference for Waves and the CM-J50:
  • CM-J50's local I/O mapping and sharing with Waves
    In the Input / Output tables below all the “slots” in BOLD (41-56) are shared on the CM-J50 with Waves. Only one item out of each pair can be selected at a time. Once an item is selected the alternative option will be greyed out in the assignment window. Note: There are no Waves outputs on slots 63 and 64, these slots are dedicated to the headphone output. Input / Waves / Local IO 1 _ Waves 1 _ not shared 2 _ Waves 2 _ not shared 3 _ Waves 3 _ not shared 4 _ Waves 4 _ not shared 5 _ Waves 5 _ not shared 6 _ Waves 6 _ not shared 7 _ Waves 7 _ not shared 8 _ Waves 8 _ not shared 9 _ Waves 9 _ not shared 10 _ Waves 10 _ not shared 11 _ Waves 11 _ not shared 12 _ Waves 12 _ not shared 13 _ Waves 13 _ not shared 14 _ Waves 14 _ not shared 15 _ Waves 15 _ not shared 16 _ Waves 16 _ not shared 17 _ Waves 17 _ not shared 18 _ Waves 18 _ not shared 19 _ Waves 19 _ not shared 20 _ Waves 20 _ not shared 21 _ Waves 21 _ not shared 22 _ Waves 22 _ not shared 23 _ Waves 23 _ not shared 24 _ Waves 24 _ not shared 25 _ Waves 25 _ not shared 26 _ Waves 26 _ not shared 27 _ Waves 27 _ not shared 28 _ Waves 28 _ not shared 29 _ Waves 29 _ not shared 30 _ Waves 30 _ not shared 31 _ Waves 31 _ not shared 32 _ Waves 32 _ not shared 33 _ Waves 33 _ not shared 34 _ Waves 34 _ not shared 35 _ Waves 35 _ not shared 36 _ Waves 36 _ not shared 37 _ Waves 37 _ not shared 38 _ Waves 38 _ not shared 39 _ Waves 39 _ not shared 40 _ Waves 40 _ not shared 41 _ Waves 41 _ AES in 1L 42 _ Waves 42 _ AES In 1R 43 _ Waves 43 _ AES In 2L 44 _ Waves 44 _ AES In 2R 45 46 _ Waves 46 _ AES In 3R 47 _ Waves 47 _ AES In 4L 48 _ Waves 48 _ AES In 4R 49 _ Waves 49 _ Mic In 1 50 _ Waves 50 _ Mic In 2 51 _ Waves 51 _ Mic In 3 52 _ Waves 52 _ Mic In 4 53 _ Waves 53 _ Mic In 5 54 _ Waves 54 _ Mic In 6 55 _ Waves 55 _ Mic In 7 56 _ Waves 56 _ Mic In 8 57 _ Waves 57 _ not shared 58 _ Waves 58 _ not shared 59 _ Waves 59 _ not shared 60 _ Waves 60 _ not shared 61 _ Waves 61 _ not shared 62 _ Waves 62 _ not shared 63 _ Waves 63 _ not shared 64 _ Waves 64 _ not shared Output-Waves - Local IO 1 _ Waves 1 _ not shared 2 _ Waves 2 _ not shared 3 _ Waves 3 _ not shared 4 _ Waves 4 _ not shared 5 _ Waves 5 _ not shared 6 _ Waves 6 _ not shared 7 _ Waves 7 _ not shared 8 _ Waves 8 _ not shared 9 _ Waves 9 _ not shared 10 _ Waves 10 _ not shared 11 _ Waves 11 _ not shared 12 _ Waves 12 _ not shared 13 _ Waves 13 _ not shared 14 _ Waves 14 _ not shared 15 _ Waves 15 _ not shared 16 _ Waves 16 _ not shared 17 _ Waves 17 _ not shared 18 _ Waves 18 _ not shared 19 _ Waves 19 _ not shared 20 _ Waves 20 _ not shared 21 _ Waves 21 _ not shared 22 _ Waves 22 _ not shared 23 _ Waves 23 _ not shared 24 _ Waves 24 _ not shared 25 _ Waves 25 _ not shared 26 _ Waves 26 _ not shared 27 _ Waves 27 _ not shared 28 _ Waves 28 _ not shared 29 _ Waves 29 _ not shared 30 _ Waves 30 _ not shared 31 _ Waves 31 _ not shared 32 _ Waves 32 _ not shared 33 _ Waves 33 _ not shared 34 _ Waves 34 _ not shared 35 _ Waves 35 _ not shared 36 _ Waves 36 _ not shared 37 _ Waves 37 _ not shared 38 _ Waves 38 _ not shared 39 _ Waves 39 _ not shared 40 _ Waves 40 _ not shared 41 _ Waves 41 _ AES in 1L 42 _ Waves 42 _ AES In 1R 43 _ Waves 43 _ AES In 2L 44 _ Waves 44 _ AES In 2R 45 46 _ Waves 46 _ AES In 3R 47 _ Waves 47 _ AES In 4L 48 _ Waves 48 _ AES In 4R 49 _ Waves 49 _ Mic In 1 50 _ Waves 50 _ Mic In 2 51 _ Waves 51 _ Mic In 3 52 _ Waves 52 _ Mic In 4 53 _ Waves 53 _ Mic In 5 54 _ Waves 54 _ Mic In 6 55 _ Waves 55 _ Mic In 7 56 _ Waves 56 _ Mic In 8 57 _ Waves 57 _ not shared 58 _ Waves 58 _ not shared 59 _ Waves 59 _ not shared 60 _ Waves 60 _ not shared 61 _ Waves 61 _ not shared 62 _ Waves 62 _ not shared 63 _ No Waves _ Headphones L 64 _ No Waves _ Headphones R
  • Formatting a USB key for use with a Waves license
    If you are having issues with using a USB key containing a Waves license for a CM-J50 that has been generated on an Apple Mac, or on a new USB key, you will need to follow the instructions below on how to reformat the key. On the Mac open: Applications | Utilities | Disk Utilities. Then erase the USB key as per the screen shot: Then open Waves Central and add the license to the USB key as normal. If you don’t first do the erase / reformat step on a new, or a Mac formatted USB key, a PC or a CM-J50 cannot see the USB key – however a Mac and Waves Central will.
  • CM-J50: Configuration / Modes
    The CM-J50 can configured to run in different configurations / modes. This includes Side Car, Console Mirroring, Front of House or Monitor Mode, plus with an iPad. Below is a document that provides a step by step guide on how to set-up the console in the different modes:
  • How to replace the BIOS / CMOS Battery replacement in the CM-J50
    This document is a guide on how to change the BIOS (or CMOS) battery in the CM-J50.
  • Master Section of the CM-J50 fails to start-up correctly
    If the Master Section fails to start-up correctly this is most likely due to the Cached Files being corrupt. This can occur when the console has been switched off incorrectly e.g. has the power pulled. To fix the issue insert a USB key with the appropriate software for the console into the desk. Press Clear Caches when it pop ups on the screen, then wait for it to finish processing – this may take several minutes. Pressing Clear Caches on the software command key will fix this issue as it clears out and checks for corruption in the Cadac files. NOTE: It is advised to use the Clear Caches button whenever you update the console. WARNING: If the incorrect Console Software version has been used pressing Clear Caches will stop the desk from loading, and will require a TOTAL RECALL to fix. Manually Remove Cashed Files You can also remove Cached Files manually (or check if they are there) by going into Explorer on the console: C:\Users\ecomixer\AppData\Local You can insert an appropriate Console Software USB key in to the console, then double tap on Expert and then press Explorer, which will allow you to then navigating to the folder. Or by using a USB keyboard attach to the desk. Press CTRL-ALT-DEL Navigate to Start Task Manager Press ALT-F Type “Explorer” Press Enter App Data is a hidden folder so you need to make sure you can see hidden files before you can access it by: Select Folder Options in the ecomixer folder, then select the View tab Under Advanced Settings, select Show Hidden Files, folders, and drives, and then select OK Delete all folders within the Local folder that relate to CADAC and SCC Audio. NO OTHER FOLDERS. If the corrupted files have been removed then the desk will start up without any issues.
  • How to adjust the screen resolution on the CM-J50's 6.5" screen
    This document is a guide to adjusting the screen resolution for the 6.5” screen on the Cadac CM-J50 back to the correct factory settings.
  • A guide on how to "Flip" the 6.5" screen on the CM-J50
    This is a guide to the procedure of “flipping” the small 6.5” screen on the Cadac CM-J50 to improve the viewing. This is done in the Windows software and does not require any hardware changes. If the 6.5” screen appears washed out at a normal viewing angle, then the screen on the console needs to be “flipped”. After the screen has been “flipped” there should be a much-improved colour contrast when viewing the screen at a normal angle.
  • Recommended PIC programming tool for Cadac products
    The linked PDF document provides a recommendation for a PIC programming tool that is needed to upgrade the PICSs on Cadac products.
  • How to update the PIC and / or the FPGA on the CM-MD64 MADI Bridge
    This document is a guide to programming the PIC found on the main board within the CM-MD64. It also has instructions on how, when required, to upgrade the FPGA on the CM-MD64. Both FPGA and PIC contain firmware that may need to be upgraded together or independently on occasion.
bottom of page