DNS 8D dialogue noise suppressor OWNER’S MANUAL © 2019 - 2020 CEDAR Audio Ltd Manual version 1.
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Table of Contents An Introduction to the DNS 8D...................................................................... 4 Safety instructions......................................................................................... 5 Setting up the DNS 8D.................................................................................. 6 Operation....................................................................................................... 8 In Use......................................................
AN INTRODUCTION TO THE DNS 8D The CEDAR DNS 8D has been designed specifically for broadcast and live sound. With eight channels of noise suppression, it hosts a new algorithm that marries the best of the DNS 8D and the DNS 2 dialogue noise suppressors.
SAFETY INSTRUCTIONS Read these instructions, and follow them. n Water and moisture The DNS 8D must not be exposed to rain or moisture. Furthermore, if it is brought directly from a cold environment into a warm one, moisture may condense inside it. This, in itself, will not cause damage, but may cause electrical shorting. This could damage the unit, and even cause danger to life. Always allow the unit to reach ambient temperatures naturally before connecting the mains power.
SETTING UP THE DNS 8D Unpack the DNS 8D carefully. Save the carton and all packing materials since you may need them to transport the unit in the future.
Channels AES/EBU pin-out for the DB25 connector In Out View from rear of unit Pin Hot Cold Grd 1&2 24 12 25 3&4 10 23 11 5&6 21 9 22 7&8 7 20 8 1&2 18 6 19 3&4 4 17 5 5&6 15 3 16 7&8 1 14 2 Unused:13 The clock is derived only from channels 1 & 2 so you must use this connection first; use of the other channel pairs is optional.
OPERATION Power/Lock The DNS 8D switches on automatically when power is applied. This guarantees that it reboots after a power failure. Switch it off by pressing and holding the power/lock button for about three seconds. The current settings will be stored during shutdown. If the unit is not shut down correctly, settings may not be stored. Press the power/lock button briefly to lock the soft keys (menu, shift, S1, S2 and S3) and the encoders.
THE SCREENS Main screen - Summary mode The main screen provides visual feedback regarding the current operation of the unit as well as displaying the menus and associated parameters. In normal use, the four boxes provide information regarding the operation of the DNS 8D: • • • • The Processing status The Learn status Whether Detail mode is selected The channel or group of channels currently selected. In normal use the screen also displays a summary of the setup of all eight channels.
Individual screens - Detail mode The first six displays (1 - 6, viewed from left to right) show the Attenuation and Bias information for a given channel or group on a band-by-band basis, with the lowest frequency band shown within the furthest left display, and the highest frequency band shown within the sixth display. The seventh display shows the average Attenuation and Bias across all bands - i.e. the summary display. The eighth display shows which channel or group of channels is currently in focus.
IN USE DNS On/Off Use S1 to switch processing on or off for the selected channel or group. Use SHIFT-S1 to switch processing on or off globally. Learn With Learn (S2) on for any channels or groups of channels, the DNS 8D continually identifies the power and spectral distribution of the noise present. When Learn is Off, the noise identification is frozen at the last determined values.
Groups Grouping channels together makes them adopt identical settings, and allows you to adjust them together. Group channels by clicking two encoders simultaneously or in quick succession. For example, pressing encoders 1 and 4 will group channels 1, 2, 3 and 4 together. Pressing them again removes the grouping. When channels are grouped, you can adjust their Attenuations and Biases using any of the grouped encoders. The Learn function continues to work independently for each channel in a group.
Screen and encoder 7 Screen 7 displays the Summary information for the selected channel, and encoder 7 operates as it does in the summary view: Rotate: Adjust the Attenuation / Bias Click: Toggle the focus between the Attenuation and Bias Click and hold Restore default parameters for that channel / band Screen and encoder 8 These allow you to step through the channels/groups.
MENUS Select the menus by pressing the menu button. Select the desired submenu by pressing the S1, S2 and S3 buttons. When appropriate, press the menu button to leave the menu system. The menu map is as follows: Status Status information Delete Erase Rename Rename Cancel Delete Encoders Presets Load Apply Encoders Save Erase Setup Cancel Encoders Apply Some menus provide options to move around on screen and to edit characters or values in specific locations.
In the example above, 48kHz audio is being received via the Dante interface. The page is also reporting the unit’s MAC and IP addresses. Notes about the Dante fields: Re: Dante is running in redundant mode Sw: Dante is running in switched mode A: DHCP On (server dynamically assigns an IP address and other network configuration parameters) S: DHCP Off (static IP address) For further explanation of these values, please refer to your Dante documentation.
Setup Press menu followed by S3 to access the Setup pages. Page 1 Page 2 • • Select a setup option using encoder 1. Edit the selected option using encoders 2 to 5, as available. Username and password Use these fields to set the case-sensitive username and password that will be requested by web browsers to enable remote control of the unit. The defaults are: Username: Password: DNS8D DNS8D Note for network administrators: The DNS 8D is intended for use on private networks only.
When configured correctly, the DNS 8D will respond to ICMP echo requests (pings) to its control Ethernet IP address Screensaver Select the length of time that passes between the last adjustment and the screen saver dimming the screens to prolong their lives. Options are 5, 30 or 180 minutes, or Off. Brightness Select the screen brightness. Options are high, medium and low. On boot Determine the action undertaken by the DNS 8D upon startup. Options are: Load P0: Load Preset 0.
REMOTE CONTROL The DNS 8D incorporates its remote control software in the form of an internal web page, and you may connect to this using a suitable browser. To access it, connect the DNS 8D’s control port to your Ethernet network. It will attempt to obtain an IP address from the network using DHCP and then register its serial number as its hostname. Once this is complete, enter the unit’s address... http://dns-8-nnnnn.yourdomain.com ...
SETTINGS You may set up the DNS 8D over the network using a standard web browser. Determine the address of your DNS 8D by inspecting the Status window, then launch your browser and type the following into the address bar… xxx.xxx.xxx.xxx/settings.html …where xxx.xxx.xxx.xxx is that address. Warning: Do not change the Network settings unless you are confident in your ability to do so correctly. Note that the DNS 8D is intended for use on trusted networks only.
PRESET MANAGER You may save and reload complete banks of presets over the network using a standard web browser. Determine the address of your DNS 8D by inspecting the Status window, then launch your browser and type the following into the address bar… xxx.xxx.xxx.xxx/presetbackup.html …where xxx.xxx.xxx.xxx is that address. The following screen (or a similar one performing the same function, depending upon browser) will appear.
FIRMWARE UPDATES The DNS 8D firmware may be upgraded over the network using a standard web browser. Determine the address of your DNS 8D by inspecting the Status window, then launch your browser and type the following into the address bar… xxx.xxx.xxx.xxx/update.html …where xxx.xxx.xxx.xxx is that address. The following screen (or a similar one performing the same function, depending upon browser) will appear.
DECLARATION OF CONFORMITY Date of issue Equipment Manufacturer Address 30 September 2019 CEDAR DNS 8D CEDAR Audio Ltd 20 Home End, Fulbourn, Cambridge CB21 5BS, UK This is to certify that the aforementioned equipment, when used in accordance with the instructions in this manual, fully conforms to the protection requirements of the following EC Council Directives: on the approximation of the laws of the member states relating to: 2004/108/EEC Electromagnetic Compatibility Directive Applicable standards: EN
CONTACT INFORMATION Headquarters: CEDAR Audio Ltd, 20 Home End, Fulbourn, Cambridge, CB21 5BS, United Kingdom t: +44 1223 881771 f: +44 1223 881778 e: support@cedaraudio.com USA Office: CEDAR Audio USA 82 Gilman Street, Portland, ME 04102, USA t: +1 207 828 0024 f: +1 207 773 2422 e: cedarusa@cedaraudio.com German Office: CEDAR Deutschland Görlitzer Str. 3, D-49525 Lengerich, Deutschland t: +49 5481 945087 f: +49 5481 945088 e: info@cedaraudio.de Web: www.cedaraudio.
SPECIFICATIONS General Power supply: Power consumption: I/O type: I/O resolution: Sample rates: Latency: Data format: 85–260VAC; 50–60Hz 15W Digital PCM 24 bits 44.1, 48, 96kHz <10 samples AES/EBU Dante® Modes: Resolution: Sample rates: Latency: Network: Other: Switch / Redundant PCM16, PCM24, PCM32 44.
3RD-PARTY LICENCES The CEDAR DNS 8D firmware includes certain elements that are distributed under the following licences. === FreeRTOS LICENSE ================================================================== Copyright (C) 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
the rights. These restrictions translate to certain responsibilities for you if you distribute copies of the software, or if you modify it. For example, if you distribute copies of such a program, whether gratis or for a fee, you must give the recipients all the rights that you have. You must make sure that they, too, receive or can get the source code. And you must show them these terms so they know their rights.
The source code for a work means the preferred form of the work for making modifications to it. For an executable work, complete source code means all the source code for all modules it contains, plus any associated interface definition files, plus the scripts used to control compilation and installation of the executable.
LICENCE AND LIMITED WARRANTY 1. DEFINITIONS In this Licence and Limited Warranty the following words and phrases shall bear the following meanings: ‘the Company’ is CEDAR Audio Limited of 20 Home End, Fulbourn, Cambridge CB21 5BS, UK; ‘a/the System’ means an instance of the DNS 8D sound processing system comprising hardware and software developed by the Company; ‘this Document’ means this Licence and Limited Warranty. 2. ISSUE AND USE OF THE SYSTEM 2.
5. FORCE MAJEURE The Company shall not be liable for any breach of its obligations hereunder resulting from causes beyond its reasonable control including, but not limited to, fires, strikes (of its own or other employees), insurrection or riots, embargoes, container shortages, wrecks or delays in transportation, inability to obtain supplies and raw materials, or requirements or regulations of any civil or military authority. 6.
DNS 8D Inspected: QC Engineer: Serial number: Designed and manufactured by CEDAR Audio Ltd 20 Home End Fulbourn Cambridge CB21 5BS United Kingdom www.cedaraudio.com info@cedaraudio.
