User Manual
Contents
1. bel DIGITAL GROUP MAG4A4 MADI to Multi format AES interface C PSU SYNC MADI AES ae Q Q nn WK VID AES MADI ON OFF LED INDICATION GREEN OK C RED FLASH WARNING Installation and User Guide Reference To Statement Of Conformity This document confirms that products bearing the CE label meet all the requirements in the EMO directive 2004 108 EC and LV directive 2006 95 EC laid down by the Member States Council for adjustment of legal requirements Furthermore the products comply with the rules and regulations from 30 August 1995 referring to the electromagnetic compatibility of devices Bel MA64 units bearing the CE label comply with the following harmonised or national standards EMC BS EN 55103 1 2009 BS EN 55103 2 2009 Safety BS EN 60950 1 2006 ed 2 A1 2010 Insulation Class1 2 MA64 User Manual v1 2 Instructions for Disposal of WEEE by Users in the European Union The symbol shown here is on the product E Or on its packaging which indicates that this product must not be disposed of with other waste Instead it is the user s responsibility to dispose of their waste equipment by handing it over to a designated collection point for recycling of waste electrical and electronic equipment The separate collection and recycling of your waste equipment at the time of disposal will help to conserve natural resources and ensure that it is recycled in a manner that prot2. Bel Digital Group Limited Setting Up Block Diagram amp Operation MADI input fibre r MADI input coax gt MADI interface Front panel control of SRCs Sync References Inputs amp Outputs Sample rate converters with bypass AES interface MADI Loop through output fibre MADI Loop through output coax Input Select LED SRC On LED Sync LED AES EBU Outputs AES3 id Outputs High Speed and SMUX protocols The MA64 is capable of automatically sensing the incoming sample frequency from 44 1 kHz to 96 kHz There are however two recognised MADI protocols used for the transmission of 88 2 kHz and 96 kHz material These are known as High Speed and the historic legacy SMUX protocols The MA64 is capable of working with both In Auto detect mode the MA64 will automatically detect the more recent 88 2 and 96 kHz high speed protocols in addition to 44 1 kHz and 48 kHz material If receiving legacy SMUX MADI then the MA64 will require switching into SMUX mode It is possible to tell at a glance which mode the unit is set to by looking at the MADI input selection LEDs on the front panel 4 see Front Panel Description on page 7 If either the Coax or Fibre LED indicator is flashing it confirms that the unit is in SMUX mode If the LED illumination is constant then the MA64 is set to Auto detect mode and will accept the High Speed MADI sources To select which mode to
3. User Manual v1 2 MAG4 Main Features e Converts all MADI channels to balanced AES EBU and unbalanced AES3 id outputs from 44 1 kHz to 96 kHz e Operates with both SMUX and High Speed MADI protocols e MADI input available as both copper BNC and optical SC e MADI loop through outputs simultaneously on copper and fibre e MADI output conforms to AES10id 2008 AES3 output to AES3 1992 e Transparent to Dolby D E with SRC OFF e Switchable sample rate conversion SRC on all AES outputs provided e Sync to external wordclock external AES3 video black and burst or MADI e Sync reference outputs in wordclock and AES3 formats e Two independent PSUs with separate IEC inputs Bel Digital Group Limited Front Panel Description PSU SYNC SRC MADI is es BALANCED men A Du oO uf ol oo 0 Geez o RESSE O NESSES O oo m O oO PSU status two bi colour LEDs confirming SRC control 2 position toggle switch the current status of each PSU The LEDs are green in normal operation and flash red if a PSU fault condition is detected Sync source selection a 3 position toggle switch for selecting the audio sync source The switch s down position is latching while its up position is momentary Repeated upward presses on the switch scroll through the possible external sync sources The adjacent amber LEDs indi
4. operate in just hold the Sync Source Selection switch 2 in its uppermost position for 4 seconds The state of the MADI input selection LED will then toggle between Bel Digital Group Limited e Solid Auto detect mode Auto detect sample rates from 44 1 kHz to 96 kHz High Speed e Flashing SMUX mode Select this when receiving 88 2 kHz or 96 kHz sources using the SMUX protocol Note When in SMUX MADI mode the MA64 can be used to convert from incoming SMUX to High Speed format at the AES outputs Sample Rate Converters As with all operations involving digital audio it will generally be desirable for the audio outputs of the MA64 to be synchronised in frequency and or phase with a master reference clock which will also synchronise all other digital audio processing in the facility It may also be that the incoming MADI stream could require re synchronising to a different house clock such as that on an outside broadcast vehicle for example To achieve this MA64 includes a Sample Rate Converter SRC for each converted AES pair The SRCs may be switched in or out by a front panel switch 3 see Front Panel Description on page 7 When the SRCs are active a red LED illuminates When enabled the SRCs re clock the audio data against the sync reference at the REF IN connector ensuring that the word blocks in the data are phase MA64 User Manual v1 2 lI locked exactly to the reference clock The MA64 allows the user
5. R BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL CAUTION RISK OF ELECTRIC SHOCK THIS EQUIPMENT HAS MORE THAN ONE POWER CORD TO REDUCE THE RISKS OF ELECTRIC SHOCK DISCONNECT BOTH POWER SUPPLY CORDS BEFORE SERVICING The lightning flash with arrowhead symbol within equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating instructions and maintenance Servicing instructions in the literature accompanying the appliance Important Safety Information This apparatus has no mains switch or other user operated control for disconnecting the AC mains power The mains plugs or the appliance couplers IEC sockets are used as the disconnect devices Either device must remain readily operable and accessible when the apparatus is installed for use This unit includes thermally resettable fuses that are integral to the power supply circuitry but the unit must always be powered from a supply fitted with an HRC type High In Rush Current fuse with a rating of 1A MA64 User Manual v1 2 5 Introduction Thank you for buying this Bel product The MA64 MADI to Multi format AES converter is designed to provide a s
6. T Derived wordclock output from selected reference input BNC AES OUT Derived AES3 sync output from selected reference input BNC ETHERNET Ethernet port RJ45 PSU AC inputs 2 x IEC sockets 8 MA64 User Manual v1 2 Bel Digital Group Limited Installation Hardware Considerations The MA64 is built in a 1U 19 enclosure It is intended to be permanently installed in a standard 19 equipment rack There are ventilation grilles in the top bottom and both sides of the enclosure and care must be taken to ensure that these are not blocked by cables or other equipment when the AES EBU Outputs The 64 audio channels converted from the MADI input are available as 32 AES EBU digital audio output pairs on four front panel 25 way female Dsub connectors Appropriate channel numbers are screenprinted on the front panel above each connector The outputs are balanced and are compliant with AES3 1992 The diagram below provides the pinout which is unit is installed Do not install any other items of Tascam digital compatible equipment immediately above or below to the MAG4 the use of 1U blanking panels is recommended CHANNEL PAR PN ouo ne Be CT e feae e fo Power Supply Considerations The MA64 is fitted with two separate auto ranging switch mode power supplies PSUs The operating voltage range is 100 to 240 V AC 50 60 Hz The internal power rails are diode paralleled to the two supplies and the
7. are achievable n 0 8 16 24 To aid installation an optional AES EBU breakout panel B0B 0 32 is available from Bel This consists of a 1U 19 panel with 16 XLR3M connectors fitted 32 channels Note A single mode fibre option is available but only at time of order Bel Digital Group Limited MA64 User Manual v1 2 9 AES3 id Outputs The 64 audio channels converted from the MADI input are available as 32 AES3 digital audio outputs on the rear panel 37 way female Dsub connector The outputs are unbalanced AES3 id but are compliant with AES3 1992 in all other respects The table below gives the pinout CHANNELS AES 1 AES 2 AES 5 AES 6 AES 9 AESIO AES 13 MES 14 AES 17 AES 18 AESP AES 22 AES 25 AES 26 AES 29 AES 30 ve nn ve cnD Dr AES 3 AESA AES 7 MESE AES 11 AES 12 AES 15 AES 16 AES 19 AES 20 AES 23 AES 24 AES 27 AES 28 AES 31 AES 32 Be Fi N gt o nm oa 3a a o Oo oO ew N n c Z O 10 MA64 User Manual v1 2 Note that each AES3 output carries 2 audio channels To aid installation an optional AES3 id Signal Break Out accessory ASBO is available from Bel This consists of a 1U 19 panel with 32 BNC sockets prewired to a 37 way Dsub plug This may be mounted at the front or rear of the rack and greatly simplifies wiring ETHERNET Port The MA64 includes a standard Ethernet port an RJ45 socket This functionality is for firmware updates
8. case of the MA64 when switched on the SRCs synchronise the incoming MADI source to that of the wordclock AES or video reference inputs whichever of the three is selected Bel Digital Group Limited Q When should an SRC switch be set to OFF A The only time an SRC switch should be set to OFF is when Dolby content is embedded within the MADI stream If this situation does arise then MA64 synchronisation must be set to reference the MADI input unless all equipment is syncronised to a house clock MA64 will then become the sync master reference source Ensure that other equipment then synchronises to the unit s Wordclock output WK Out Q Can Sample Rate Conversion be applied to the MADI outputs A No The MADI Loop through outputs are a regenerated copy of the MADI input stream Audio Outputs Q Is there an easier way to access the AES outputs than wiring directly to the 25 way and 37 way Dsubs A Yes Bel also manufacture a 1U AES3 id breakout unit ASBO that connects directly to MA64 and provides the 32 unbalanced AES outputs on BNC connectors 75 ohm Likewise each 1U BOB 0 32 breakout panel can be used to connect to two of the 25 way AES EBU output connectors thus providing 16 AES output pairs on XLR connectors Contact your Bel dealer for further information Q Are the audio outputs always available A Yes both balanced and unbalanced AES are simulteniously available Q What fibre optic MADI cabl
9. cate the currently selected source When the LED for the desired source is on the switch may be placed in the latching down position to prevent inadvertent further changes of sync source SWITCH POSITION FUNCTION CENTRE NO ACTION INCREMENTS SYNC UP MOMENTARY SOURCE SELECTION DOWN LATCHES a Sn TO CHOSEN The switch is also used to toggle between High Speed and SMUX MADI modes 88 1 kHz and 96 kHz only Bel Digital Group Limited controlling internal SRCs across all channels SWITCH POSITION FUNCTION SRC ON DOWN SRC OFF MADI input selection 2 position toggle switch controlling the input MADI source fibre or coaxial AES EBU output ports Four 25 way female Dsub connectors wired to Tascam format MA64 User Manual v1 2 7 Rear Panel Description PSU 1 MADE IN THE EC PSU 2 Model POWER RATINGS CE Peg Serial No e e 100 240 V 0 5 0 3A CAUTION of RISK OF ELECTRIC SHOCK NOT ETHERNET _IN Coaxial MADI input BNC OUT Coaxial MADI output BNC providing a loop through output of the selected input MADI source __IN Optical MADI input SC OUT Optical MADI output SC providing a loop through output of the selected input MADI source AES UNBALANCED OUTPUTS 37 way female Dsub connector providing unbalanced AES3 id outputs of all available MADI channels REF IN External synchronisation reference input BNC WK OU
10. e should use Recommended fibre types are 62 5 125 um or 50 125 um multimode An SC type fibre optic connector is fitted to MA64 Single mode can be specified at time of order MA64 User Manual v1 2 13 Technical Specifications MADI Input x SC socket multi mode single mode option available x Coaxial 750 BNC Loop through output x SC socket multi mode single mode option available x Coaxial 750 BNC Word clock output Follows Word clock input DC coupled positive going pulses derived from incoming reference signal Breakout panels are available TASCAM is a trademark of TEAC Corporation Specifications and information contained in this manual are subject to change at any time without notice 14 MA64 User Manual v1 2 Bel Digital Group Limited Bel Digital Group Limited MA64 User Manual v1 2 I5 Bel Digital Group Ltd 3 Horwood Court Bletchley Milton Keynes MK1 1RD United Kingdom Tel 44 0 1908 641063 Email info beldigital com URL www beldigital com
11. e video signal should be connected to the REF IN connector on the rear panel The sync input auto detects NTSC or PAL standard video Note Video sync also includes an internally generated 48 kHz clock if internal sync is required Sync To AES3 An AES3 compliant digital audio source may be used as the clock reference source The internal 48 kHz wordclock source is phase locked to the incoming AES3 signal Any audio data contained in the AES3 word will be ignored The audio source should be compliant with AES3 id for 75 ohm coaxial transmission and connected to the REF IN connector on the rear panel Sync To MADI The MA64 can also synchronise to the incoming MADI stream 12 MA64 User Manual v1 2 Clock Outputs A reference clock output is available at the rear panel WK OUT connector 7 and at the AES OUT connector 8 These are derived from whichever synchronisation source is selected Bel Digital Group Limited Frequently Asked Questions Power Q Can run MA64 with just one PSU AC inlet cable A Yes although it is always recommended that two AC inlet cables are connected in order to provide a level of redundancy The two AC inlet cables should be connected to mains circuits which are as independent of each other as possible SDI Q How do you select between MADI inputs A Use the front panel MADI input selector switch to select fibre or coaxial MADI input Synchronisation Q MA64 is not synchronis
12. ects human health and the environment For more information about where you can drop off your waste equipment for recycling please contact your local city office your household waste disposal service or where you purchased the product User s Notice and disclaimer No part of this manual may be reproduced transmitted transcribed stored in a database system or translated without the express written permission of Bel Digital Group Ltd Documentation kept by the end user for back up purposes is excluded from the above All products and corporate names mentioned in this manual may be registered trademarks or copyrights of their respective companies They are used here for indicative purposes only The information contained in this manual has been carefully checked for accuracy however no guarantee is given with respect to its correctness Bel Digital Group Ltd accepts no responsibility or liability for any errors or inaccuracies that may appear in this manual or the products and software described in it Specifications and information contained in this manual are subject to change at any time without notice 2015 Bel Digital Group Ltd All rights reserved This appliance has a serial number located on the rear panel Please record the serial number here for your records Model Number MA64 Serial Number 0 cccececceecesee cesses eeeae eases Bel Digital Group Limited Contents Reference To S
13. ing to wordclock A Ensure that the incoming wordclock is derived from a 75 ohm terminated source as per the AES 11 standard Q What is the most commonly recommended configuration for synchronisation A The most commonly used and recommended synchronisation method for MA64 is slaving it to wordclock via the Ref In connector Ensure that wordclock sync has been selected using the front panel selection switch WK LED should illuminate Q Can daisy chain other devices to MA64 to when synchronising to Wordclock A This is possible by using the wordclock loop through connector WK Out WK Out is a buffered copy of the incoming wordclock Q Can MAG4 be used as a master sync generator A In the majority of installations MA64 should not be used as a master sync generator The only situation that would dictate use as a master clock reference would be when MAG4 is synchronised to an incoming MADI source that contains Dolby bitstreams In this situation the Sample Rate Converter switch should be set to OFF and all other external audio equipment should be synchronised to the MA6G4 s wordclock output WK Out Q Is the wordclock input terminated A Yes it is internally terminated at 75 ohms Sample Rate Converters Q What are the Sample Rate Converters for A In the traditional sense Sample Rate Converters SRCs do as they say convert an incoming or outgoing audio source from one sample rate to another In the
14. o ar wm Do not block any ventilation openings Install with accordance with the manufacturer s instructions 9 No naked flames such as lighted candles should be placed on the apparatus 10 Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat 11 There are no user adjustments or user servicable items inside this apparatus Do not remove the covers of this apparatus doing so will invalidate your warranty 12 Adjustments or alterations to this apparatus may affect the performance such that safety and or international compliance standards may no longer be met 13 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped Caution 14 Hazardous voltages may be present inside this apparatus 15 Do not operate this apparatus with the covers removed 16 To reduce the risk of electric shock do not perform any servicing other than that contained in these Installation Instructions unless you are qualified to do so Refer all servicing to qualified service personnel and ensure that all power cords are disconnected when servicing this apparatus 17 Only use attachmen
15. pace conscious method of reliably converting up to 64 channels from a MADI source to both balanced and unbalanced AES formats The MA64 is a very high quality product engineered for maximum reliability in professional broadcast live and production environments It is intended to be installed and forgotten and left in permanent operation It requires virtually no configuration on installation or adjustment in normal use This manual covers the MA64 s connections and indications including its various options for synchronisation Please keep the manual in a safe place once you have installed the MAB4 Important Please register your MA64 with Bel Digital Group Ltd at info beldigital com Registering your unit will help us in providing you with after sales service should the need arise and may also be of assistance in the event of the unit being stolen Environment The MA64 s range of operating temperature and relative humidity RH are as follows Temperature 5 C to 40 C RH Operating 20 to 80 What s In The Box Unpacking Unpack the MA64 with care It is always a good idea to store all packaging if practical in case you ever need to return the unit to Bel for any reason The shipping carton should contain the items listed below Please contact your distributor immediately if any of them are missing or damaged e MA64 audio interface e Instruction manual e 2x IEC connector retaining clamp 6 MA64
16. parate service grounds 28 This equipment is not supplied with a detachable power cord The device should be connected to a power supply only of the type described in the Installation Guide or as marked on the device The power cord must be earthed and precautions should be made so that the grounding is not defeated A mains cord fitted with an IEC 60320 C13 type socket appropriate sized conductors and plug to suit local electrical requirements 29 The power supply cord i e conductor coupler IEC60320 C13 and plug combination must be suitably rated for apparatus and the country of use meeting local electrical requirements A power supply cord with a rating of not less than 125 of current rating is suitable The minimum rating for the power supply cord at 110 230V ac to be 1A Bel Digital Group Limited Installation 30 When installing this apparatus either fix it into a standard 19 rack or place the apparatus on a secure level surface When this apparatus is rack mounted fit all rack screws 31 Ensure that no strain is placed on the cables connecting to this apparatus Ensure also that such cables are not placed where they can be stepped on pulled or tripped over 32 Do not operate this apparatus whilst it is covered or boxed in any way Bel Digital Group Limited Important Safety Precautions CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER O
17. tatement Of Conformity 2 Important Safety Instructions 00e000 4 Important Safety Precautions sssssssessceeseeees 5 Introduction aan 6 What s In The Ba amp 2 uuu 00en a 6 MA64 Main Features 6 Front Panel Description u a 7 Rear Panel Description 002000 0su0n00s2020 8 Installation anno 9 Hardware Considerations sssccsssescessscesseeees 9 Power Supply Considerations ee 9 FUSES And Ratings anime 9 Unit Connections aan 9 MADI Inputs and Outputs risiini 9 AES EBU Outputs nennen are 9 AES3 1d Outputs et teen een 10 ETHERNET PONG nennen esexssestesatases rsacnsesnessesteasiees 10 Setting Up amp Operation cccccccceeseeees lI Block Dasein II High Speed and SMUX protocols neee E Sample Rate Converters nun E SYNCHFON Sat OH ae 12 Syne To Wordelock nsise 12 Sync To Video Black And Burst ueeeee 12 SYNE TO ABS ii 12 Syne TO MADI sascetiseracsithaisaseveutencaisincrsitnecdeessataetessderntet 12 Clock Outputs neriesi 12 Frequently Asked Questions ssssse0e 13 Technical Specifications ssccccssrees 14 Bel Digital Group Limited MA64 User Manual v1 2 3 Important Safety Instructions Read these instructions Keep these instructions Heed all warnings Follow all instructions Do not use this apparatus near water Do not expose this apparatus to rain or moisture Clean only with a dry cloth o
18. to select a reference clock source to suit the infrastructure of the facility and the nature of the transfer process See following section on Synchronisation Note Passing Dolby encoded material through sample rate converters will corrupt the Dolby bitstream Synchronisation The MA64 should normally be used as a slave device synchronised to an external clock reference MA64 offers a choice of synchronisation sources Selection is made from the front panel and the array of LEDs confirms the currently selected source The selected source is used as reference for all four output SRCs thus ALL audio outputs both in AES EBU and AES3 id formats will be locked to the selected reference The various clock sources are discussed below Sync To Wordclock Sync to an external wordclock is indicated by illumination of the WK front panel LED The clock source should be connected to the REF IN connector a BNC socket on the rear panel and the SRC front panel switch should be set to ON Clock pulses should be of 5 V amplitude positive going Note The wordclock input includes integral 75 ohm termination Use the wordclock output connector to daisy chain wordclock to other devices Note When working with SMUX sources Wordclock should be set to 48 kHz for 96 kHz operation and 44 1 kHz for 88 2 kHz operation Sync To Video Black And Burst The MAG4 can also synchronise to a standard SD 1 V black and burst video signal Th
19. ts accessories specified by the manufacturer 4 MA64 User Manual v1 2 Power Safety 18 This apparatus is fitted with a universal power supply approved and certified for operation in this apparatus There are no user replaceable fuses 19 An external over current protection device is required to protect the wiring to this apparatus This protection device must be installed according to current wiring regulations In certain countries this function is supplied by use of a fused plug 20 If an extension power cable or adaptor is used ensure that the total power rating of the power cable and or adaptor is not exceeded 21 An external disconnect device is required for this apparatus a detachable power cord is a suitable disconnect device 22 The apparatus should be located close enough to an AC outlet so that you can easily grasp the power cord plug at any time 23 This apparatus is a Class construction and shall be connected to an AC outlet with a protective grounding connection 24 Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus 25 Unplug this apparatus during lightning storms or when unused for long periods of time 26 All power cords must be disconnected to isolate this apparatus completely 27 Caution To reduce the risk of electric shock plug each power supply cord into separate branch circuits employing se
20. unit will operate normally if only one PSU is powered or functional For maximum protection when using both PSUs the two AC inlet cables should be connected to mains circuits which are as independent of each other as possible If redundant operation is not required only one AC supply cable need be connected either AC inlet may be used Fuses And Ratings Each of the MAG4 s PSUs has an internal resettable fuse for PSU protection These fuses are not accessible to the user The unit should be powered from a mains supply supplies fitted with an external HRC type fuse High Inrush Current rated at 1 A Unit Connections MADI Inputs and Outputs The MA64 can simultaneously convert up to 64 audio channels embedded in the MADI stream and provide them as both AES EBU and AES3 id outputs MADI inputs are provided as fibre on an SC type connector multi mode and coaxial on BNC The characteristic impedance of the coaxial input is 75 ohm Each MADI input has an active MADI loop through output to simplify the connection of further equipment The co axial MADI output is on a BNC socket and is compliant with AES10id 2008 The characteristic impedance is 75 ohms at a nominal data rate of 125Mbps Transmission distances up to 50 m are generally achievable The fibre loop through output is provided on an SC type connector Recommended fibre types are 62 5 125 um or 50 125 um multi mode Transmission distances of at least 1000 m
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