Behringer SRC2496 User's Manual
Contents
1. In the past the conversion of various sample rates into a fixed value necessitated a whole rack full of components and even then had some disadvantages that could be measured as increased noise distortion or undesirable mirror frequencies high frequency chirping On the other hand the sampling rate converter chip installed in the ULTRAMATCH PRO converts in real time and with 24 bit precision Its processing is absolutely inaudible and can only be identified with state of the art extremely expensive measuring instruments The functional principle is difficult to comprehend even for professionals That is why we are presenting you with an equivalent model which describes the processes taking place in the processor in an easily understandable manner The processor carries out an oversampling at the input signal Between each sample more samples are inserted thereby significantly increasing the number of sampling points by filling in the gaps Subsequently the signal passes through a variable low pass filter which ensures that the correct limit below which no problems with mirror frequencies aliasing occur is observed Then the number of sampling points is distributed in such a way as to obtain the desired sampling rate at the output This enormous oversampling allows the SRC processor to achieve excellent precision in the complete conversion range Moreover it also simultaneously eliminates any jitter present in the input signal2. ULT MATCH PRO SRC2436 a one D A 5 O JI ma 6 Ai MEU s 4 3 C ZV S D ENGLISH ULTRAMATCH PRO SRC2496 IMPORTANT SAFETY INSTRUCTIONS A CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN ATTENTION RISGUE DE CHOC ELECTRIGUE NE PAS OUVRIR A CAUTION To reduce the risk of electric shock do not remove the top cover or the rear section No user serviceable parts inside refer servicing to gualified personnel WARNING To reduce the risk of fire or electric shock do not expose this appliance to rain and moisture The apparatus shall not be exposed to dripping or splashing and no objects filled with liguids such as vases shall be placed on the apparatus This symbol wherever it appears alerts you to the presence of uninsulated dangerous voltage inside the enclosure voltage that may be sufficient to constitute a risk of shock This symbol wherever it appears alerts you to important operating and maintenance instructions in the accompanying literature Please read the manual DETAILED SAFETY INSTRUCTIONS 1 Read these instructions 2 Keep these instructions 3 Heed all warnings 4 Follow all instructions 5 Do not use this apparatus near water 6 Clean only with dry cloth 7 Do not block any ventilation openings Install in accordance with the manufacturer s instructions 8 Do not install near any heat sources such as r
3. SPECIFICATIONS Synchronization Internal sampling rates Synchronization via digital input and wordclock Digital input 1 Type Input impedance Nominal input level Digital input 2 Type Input impedance Nominal input level Digital input 3 Type Synchronization input Type Input impedance Standard Nominal input level Digital output 1 Type Output impedance Nominal output level Digital output 2 Type Output impedance Nominal output level Digital output 3 Type Analog inputs Type Input impedance Converter Input level S N Ratio Analog outputs Type Output impedance Converter Output level S N Ratio Jitter suppression Jitter permitted at input Internal jitter at input Internal jitter with external Synchronization 32 44 1 48 88 2 96 kHz accepts all sampling rates between 31 and 100 kHz automatic synchronization by PLL XLR transformer balanced 110 ohms 0 2 V to 5 V peak to peak RCA transformer balanced 75 ohms 0 2 V to 5 V peak to peak Toslink optical fiber cable BNC 50 kohms Wordclock 1 x FS 2 V to 6 V peak to peak XLR transformer balanced 110 ohms balanced 3 5 V peak to peak RCA transformer balanced 75 ohms 0 5 V peak to peak Toslink optical fibre cable XLR balanced 20 kohms 24 bit 96 kHz 128 64 times oversampling delta sigma AKM A D converter 4 dBu to 22 dBu for 0 dBFS adjustable gt 105 dB XLR balanced 160 ohms 24 bit 96
4. cription of how you can use your ULTRAMATCH PRO in various applications 2 CONTROL ELEMENTS 1 2 Before you begin Your ULTRAMATCH PRO was carefully packed at the factory and the packaging is designed to protect the unit from rough handling Nevertheless we recommend that you carefully examine the packaging and its contents for any signs of physical damage which may have occurred during transit gt If the unit is damaged please do NOT return it to BEHRINGER but notify your dealer and the shipping company immediately otherwise claims for damage or replacement may not be granted Shipping claims must be made by the consignee The BEHRINGER ULTRAMATCH PRO requires one rack unit for installation in a 19 rack Please allow for an additional 4 of rack depth for the rear panel connectors For rack mounting please use M6 metal nuts and bolts Be sure that there is enough air space around the unit for cooling For example to avoid overheating do not place the ULTRAMATCH PRO on power amps gt Before you connect your ULTRAMATCH PRO to the mains please make sure that your local voltage matches the supply voltage required by the unit The fuse holder at the AC power connector has 3 triangular markings Two of these three triangles will be aligned with one another The ULTRAMATCH PRO is set to the voltage shown next to these markings and can be switched over by twisting the fuse holder by 180 IMPORTANT This does not apply t
5. 4 TECHNICAL BACKGROUND 11 ULTRAMATCH PRO SRC2496 There is no doubt that digital signal processing guarantees the lowest distortion and noise values However up until now signal conversion specifically sampling rate conversion had partially led to considerable distortion and interference If you tried to use traditional methods the incoming data quantity would far exceed any hardware capacity If data was put into smaller pieces to avoid storage problems the necessary turnaround time would prevent any practical application Therefore programmers continue to experiment with the most varied of algorithms ending up however always having to make a compromise between computation efforts and sound quality By processing data in real time the processor used in the BEHRINGER ULTRAMATCH PRO can process incredible amounts of data The noise and interference floor is thus below 117 dBFS and the distortion values even with difficult input signals are below 104 dBFS The ULTRAMATCH PRO remains practically inaudible as such values are not normally achieved either by the A D or the D A converter and certainly not by the CD as the final product 4 2 AES EBU and S PDIF standards In principle there are two standards the most important electrical characteristics of which can be seen in tab 4 1 AES EBU is the professional balanced connection via XLR connectors This interface is based on two identical protocols published in November 1
6. converter Output section The buttons in the output section allow you to tailor the output signal to meet your requirements Similarly to the input section the display provides you with all the information on the output signal ULTRAMATCH PRO SRC2496 a EF Ae k 2 1 1 Monitor and input sections ti a 00 MAX ANALOG IN ema ANALOG OUT 96 HEADPHONES SOURCE Fig 2 2 Input section control elements Use the GAIN control to adapt the signal level perfectly to the circuitry of your ULTRAMATCH PRO The level should be as high as possible but the 0 dB LED should only light up occasionally or never at all to avoid distortion The PHONES control governs the headphone volume You can monitor either the analog output or input by setting the SOURCE switch accordingly The analog output always provides the signal applied to the selected digital input so this signal can be monitored with the headphones too When the ULTRAMATCH PRO operates as an A D D A converter the digital input signal is applied to the analog output only in DIG IN mode see 20 21 This is the stereo 1 4 TRS connector for your headphones The ANALOG IN and or ANALOG OUT LEDs indicate which signal input or output is being displayed by the level meter The SOURCE switch routes the analog input or output signal to the level meter LEVEL METER The signal shown here can always be monitored with the headphones e AE
7. digital medium The analog input is set for studio levels 4 dBu but can be adapted to low level signals with the GAIN control Please use the level meter to adapt the level of the input signal as described in chapter 2 1 1 The illustrations 3 1 and 3 2 below show you how to connect the unit 8 3 APPLICATIONS ULTRAMATCH PRO SRC2496 Digital Audio Workstation DAT Recorder Sarr Digital input Sound card Digital outputs ULTRAMATCH PRO Microphone i outputs BEHRINGER XM1800S al z z z hal er al al s Sees IZ gi EJ sa sa Ed AES Fa f aj 63 sm msm mm Jej Jeje Jej jese gi 5 Channel input oonan E gt 01070 1000 B a Ne s BS TSS ib 10 0 BEHRINGER EURORACK UB2222FX PRO Fig 3 1 Example A D conversion of a microphone signal Fig 3 1 shows a typical setup for recording a signal source on a digital recording device here hard disk recording system If your HD recording system is eguipped with a digital interface you can use the ULTRAMATCH PRO to circumvent the A D converter on the sound card and thus avoid interference signals generated by the computer By taking the si
8. kHz 128 times oversampling delta sigma AKM D A converter 16 dBu 0 dBFS gt 108 dB gt 40 ns lt 2 ns lt 20 ns 10 ns typ Channel Status information in output signal Professional mode Consumer mode Power supply Mains voltage U S A Canada Europe U K Australia Japan General export model Power consumption Fuse Mains connection Dimensions weight Dimensions Weight Shipping weight Professional audio use stereo no emphasis or 50 15 us Fs 32 44 1 48 88 2 96 kHz Consumer audio use 2 channel original material switchable copy permit switchable no emphasis or 50 15 us Fs 32 44 1 48 kHz 88 2 96 kHz not defined 120 V 60 Hz 230 V 50 Hz 100 V 50 60 Hz 120 230 V 50 60 Hz 15 W 100 120 V T 250 mA H 250 V 200 240 V T 125 mA H 250 V Standard IEC receptacle approx 1 3 4 44 5 mm x 19 482 6 mm x 7 1 2 190 5 mm approx 2 kg approx 3 2 kg BEHRINGER is constantly striving to maintain the highest professional standards As a result of these efforts modifications may be made from time to time to existing products without prior notice Specifications and appearance may differ from those listed or illustrated 6 SPECIFICATIONS 15 ULTRAMATCH PRO SRC2496 7 WARRANTY 1 WARRANTY CARD ONLINE REGISTRATION To be protected by the extended warranty the buyer must complete and return the enclosed warranty card within 14 days of the date of purc
9. modification of the audio signal but only of the emphasis marker contained in the digital data stream So much for the theory In practice a lit EMPHASIS LED does not necessarily show that the emphasis function has really been applied In several situations the emphasis bit was set during the mastering and editing process due to defective hardware software without any treble boost applied This error usually remains undetected when the material is transferred because modern DAT recorders no longer have an emphasis indicator for reasons of rationalization When the master tape usually only monitored briefly on the DAT recorder due to lack of time arrives at the customer s end it gives him a big surprise The treble range has been cut in the DAT recorder by more than 10 dB which cannot be undone and results in a dull sound that lacks brilliance in the treble range It is for this reason that we equipped the ULTRAMATCH PRO both with an emphasis status LED and with an additional switch for manual correction of the emphasis bit setting 3 5 Line booster signal refresher Longer cable lengths or the use of a digital patchbay lead to deterioration of signal quality which may result in a higher noise floor or even connection failures Using special input circuitry your ULTRAMATCH PRO removes jitter interference and level loss thus restoring the signal to perfect quality As a consequence you can also use the SRC2496 to refresh the signa
10. recording device is the slave i e the CD player provides a clock rate of 44 1 kHz to which the DAT recorder is synchronized When using a mixing console the CD player is the master the console is the slave However this model collapses all of a sudden as soon as a DAT recorder is hooked up which does not record but plays back too The console can synchronize to one source only the audio data from the other source would be processed incorrectly because the two devices are not in sync The need for synchronization in a digital studio is done justice connecting the equipment to one central sync source For example the console could be the master supplying the remaining equipment with a reference signal wordclock However this will only work if your other equipment has a sync input i e can be used as a slave In a studio with a digital tape machine digital effects and hard disk recording system it is impossible to connect commercially available CD players or DAT recorders to the mixing section of the console simply because they cannot be synchronized By inserting the BEHRINGER ULTRAMATCH PRO SRC2496 between the equipment to be synchronized and the mixing console input the SRC2496 can deliver the audio signal with the studio clock rate entered via the external sync input WORDCLOCK 20 In this case the ULTRAMATCH PRO works as intermediate gear of sorts whose toothed transmission always ensures that there is an appropriate gap
11. user This also applies to defects caused by normal wear and tear in particular of faders crossfaders potentiometers keys buttons tubes guitar strings iluminants and similar parts 4 Damages defects caused by the following conditions are not covered by this warranty A improper handling neglect or failure to operate the unit in compliance with the instructions given in BEHRINGER user or service manuals A connection or operation of the unit in any way that does not comply with the technical or safety regulations applicable in the country where the product is used A damages defects caused by force majeure or any other condition that is beyond the control of BEHRINGER 5 Any repair or opening of the unit carried out by unauthorized personnel user included will void the warranty 6 If an inspection of the product by BEHRINGER shows that the defect in question is not covered by the warranty the inspection costs are payable by the customer 7 Products which do not meet the terms of this warranty will be repaired exclusively at the buyer s expense BEHRINGER will inform the buyer of any such circumstance If the buyer fails to submit a written repair order within 6 weeks after notification BEHRINGER will return the unit C O D with a separate invoice for freight and packing Such costs will also be invoiced separately when the buyer has sent in a written repair order 5 WARRANTY TRANSFERABILITY This warranty is exte
12. using the ULTRAMATCH PRO as the ultimate problem solver will soon pay off Virtually all common digital signals it receives at the input appear at the output with new clean markers in the respective chosen format 5 INSTALLATION 5 1 General connection notes The ULTRAMATCH PRO s digital input and output connections are short circuit proof and transformer balanced This rules out any possibility of ground loops caused by additional ground connections even when using the RCA connectors Furthermore the completely potential free concept of the digital connectors allows for using adapters in order to e g route the RCA connector signal to the XLR input of another piece of equipment Unlike digital connectors analog connectors are not galvanically separated but have a balanced design and are thus unproblematic in regard to ground loops 5 2 Analog inputs and outputs In order to give your audio signals the best possible protection from electromagnetic interference the ULTRAMATCH PRO has balanced XLR inputs and outputs As previously described the level at the analog inputs can be adjusted with the GAIN control The outputs operate at studio level 4 dBu Please see the following illustrations for the pin assignment of the connectors Of course it is also possible to send signals to the SRC2496 from unbalanced outputs e g sound cards or mixing console outputs in order to further process them in digitized form Receiving analo
13. 985 EBU Tech 3250 E by the European Broadcast Union and in December 1985 by the Audio Engineering Society AES3 1985 Sony and Philips oriented themselves to this standard and developed a further interface with unbalanced signal routing and a few other major differences predominantly related to the assignment of the channel status bits This interface named after the two companies and known as S PDIF Sony Philips Digital Interface uses either RCA connectors or optical connections with optical fiber cables The procedure standardized in IEC 958 made a name for itself mainly due to efforts to introduce a copy protect technique This standard also describes the revised AES EBU interface which was adapted to the S PDIF format and named IEC 958 Type professional The name of the S PDIF interface is then IEC 958 Type Il consumer Your ULTRAMATCH PRO uses the latest versions of each of the standards AES EBU AES3 IEC 60958 and EIAJ CP 1201 Japanese standard IEC 958 Type II S PDIF RCA optical Unbalanced 110 Ohms 75 Ohms 0 2 V to 5 Vpp 0 2 V to 0 5 V pp m 50 ppm Il 0 1 Not specified ti Variable pitch Not specified Tab 4 1 Important data for AES and IEC 958 Type ll specifications Clock accuracy Table 4 2 illustrates part of the structure of the professional format as it would normally be used with AES EBU connections 1 2 3 4 5 6 7 Locked Sampl reg Channel mode Use of user bits Tab 4 2 M
14. C cables are usually used as connecting cables In order to offer maximum flexibility the ULTRAMATCH PRO s BNC input has a high impedance design and is not equipped with an internal 75 Ohm terminating resistor Should the ULTRAMATCH PRO be the last device in the signal chain however it is necessary to put a T connector into the BNC connector A 75 Ohm terminating resistor in the form of a short BNC plug goes on one end of the T connector and the BNC cable from the master delivering the wordclock signal on the other end 5 INSTALLATION 13 ULTRAMATCH PRO SRC2496 The following figure shows how to correctly connect the unbalanced wordclock input The wiring scheme is the same as is used for networking in computer technology and you can thus obtain the appropriate accessories commercially available cable T connectors terminating resistors in specialist computer shops Word clock input ULTRAMATCH PRO lei IH TIHI a Word clock output device A signal flow terminating resistor Fig 5 6 Unbalanced connection termination of the wordclock input to the ULTRAMATCH PRO When the ULTRAMATCH PRO is used as part of a chain of wordclock devices it is also supplied with a wordclock signal via a T connector which is then relayed to the next device from the other side of the T connector via an additional BNC cable The last device in the chain is then as previously described locked by way of the T connector and a 75 O
15. EDs in the input and output sections read the same status The COPY LED copyright lights up when the input signal was supplied from a copy protected data carrier The ORIG LED original informs you that the audio signal received is an original signal i e that it can be copied see chapter 2 1 3 section 28 The AES EBU LED lights up when an AES EBU signal has been applied at the active input connector The same holds true for the S PDIF LED i e when a consumer format signal has been applied If the unit is set to A D and D A converter mode the S PDIF LED lights up even when no digital signal is present This is due to the circuitry used and does not indicate a malfunction of the unit Further information on the formats AES EBU and S PDIF can be found in chapter 4 2 Use the SOURCE switch to select the active input Only one digital input can be activated at a time However in A D D A converter mode you can use one digital input and the analog inputs simultaneously parallel A D and D A conversion For further information please refer to chapter 3 1 3 The LEDs XLR RCA and OPTICAL indicate the input activated by the user 2 1 2 Mode section SAMPLE RATE CONV i umes A D amp D A CONV zih N Fig 2 4 Mode section The two LEDs SAMPLE RATE CONV and A D amp D A CONV inform you about the operating mode of your SRC2496 i e sampling rate converter or A D D A converter Use the MODE swit
16. ER team With your highly competent suggestions for new products you ve made a significant contribution to shaping our company and making it successful In return we guarantee you uncompromising quality as well as excellent technical and audio properties at an extremely reasonable price All of this will enable you to give free rein to your creativity without being hampered by budget constraints We are often asked how we manage to produce such high quality devices at such unbelievably low prices The answer is quite simple it s you our customers Many satisfied customers mean large sales volumes enabling us to get better purchasing terms for components etc Isn t it only fair to pass this benefit on to you Because we know that your success is our success too would like to thank all of you who have made the ULTRAMATCH PRO possible You have all made your own personal contributions from the developers to the many other employees at this company and to you the BEHRINGER user My friends it s been worth the effort Thank you very much Uli Behringer TABLE OF CONTENTS 1 INTRODUCTION ccccccssceceeeceesceseceneceseeenesneeseens 5 1 1 The design concept ccceecceccseessseeeeceesseeeesseeees 5 1 2 Before you begin 5 2 CONTROL ELEMENT Da aaa ae nak kk 5 2 1 Front panel of the ULTRAMATCH PRO SRC2496 5 2 1 1 Monitor and input sections 6 2 1 2 Mode sec
17. MATCH PRO it will convert it to a common standard format Numerous conversion examples can be found in daily studio practice A Conversion of 48 kHz DAT recordings to the CD standard of 44 1 kHz A Conversion of older digital recordings from 44 056 kHz to 32 44 1 48 88 2 or 96 kHz A Conversion of foreign material with 32 kHz to 44 1 48 88 2 or 96 KHz A Conversion of audio data with a word length of 24 bits to 20 or 16 bits for recording on a digital medium A Conversion of S PDIF format to AES EBU for easy mani pulation of various parameters and improved balanced signal transmission A Setting or removing copy protect bits for further processing of recordings in a studio environment 3 2 1 Typical studio application with DAT Only recently has it become possible to use less expensive DAT recorders for direct recording from analog sources with a sampling rate of 44 1 kHz Most consumer level DAT recorders however record at 48 kHz Usually such recordings have to be transferred via an analog connection from DAT to a professional recorder This process results in an unnecessary deterioration of the original guality of the material due to the additional D A and A D converters involved With the ULTRAMATCH PRO you can eliminate this problem by converting the sampling rate purely in the digital domain which allows for a considerably higher quality than you could achieve with analog converters Further problems such
18. S EBU S PDIF EMPH aa XLR e COPY e RCA ama ORIG ema OPTICAL SOURCE Fig 2 3 Input section control elements This LED array displays the sampling rate of the digital input signal One LED lights up constantly when the sampling rate is kept accurately or does not deviate from the nominal value by more than approx 2 kHz Otherwise the LED for the next value starts flashing The LOCK LED lights up when a valid digital signal o which the ULTRAMATCH PRO can be synchronized is applied to the active input When digital input signals are being processed this LED should be on all the time showing the presence of a stable input signal The ERROR LED warns you of erroneous or the absence of any input signals It displays various error modes such as Unlock Parity Error Bi Phase Error and Confidence Error The signal is then checked as to whether or not it is an audio signal Any detected error makes the SRC2496 mute all of its outputs to protect down stream audio equipment As long as the ERROR LED is lit the ULTRAMATCH PRO cannot process any input signals JI it The EMPH LED shows you whether or not the input signal includes an emphasis marker Emphasis is a high freguency boost function that is applied during the digital recording but is undone during playback When the LED lights up the signal was emphasis processed during recording You should always make sure that the EMPH L
19. ables the dither function The corresponding LED lights up when this function is active Here s a concise explanation of the dither function Whenever analog signals are converted to digital numerical values the finite number of digits available for the mathematical description of the analog signals electrical voltages that are constant in the time and value domains inevitably result in rounding errors and misinterpretations of the analog signals quantization errors In particular signals with a very small amplitude are affected by an audible system error known as granular noise Such errors can be suppressed by adding white noise This type of noise has an exactly defined amplitude minimum amplitude that can be detected only by measuring instruments and by no means affects the audio signal and broadband frequency distribution and is called dither signal Combine this with the high internal resolution of 24 bits and you can generate an audio signal of excellent quality Reducing the digital word length e g from 24 bits to 20 bits also means a reduction of the resolution The resulting misinterpretations which are more likely to result by this word length reduction can be purposefully suppressed with the dither function 2 CONTROL ELEMENTS The EMPH LED lights up when the emphasis bit has been set in the output signal Use the EMPHASIS switch to enable disable this function To avoid sound deterioration the LED in the outpu
20. acting as an A D converter The EXTERNAL LED lights up when the sampling rate is governed by an external wordclock signal The external mode also allows you to generate sampling rates at the output that could not be generated by the SRC2496 as a master unit When the D G IN LED lights up your SRC2496 uses the wordclock signal included in the digital audio signal fed into the unit This setting is useful if you do not want to convert the sampling rate but only the format of the digital output signal S PDIF to AES EBU or vice versa The FORMAT switch determines the format of the digital data stream on the output side as defined in the Channel Status data Available formats are AES EBU and S PDIF The LEDs AES EBU and S PDIF show the adjusted output format which is present at all three digital outputs Using an appropriate cable see chapter 5 3 5 you could also route an S PDIF signal from the XLR output to a second unit in case the RCA output is already in use Use the WORDLENGTH switch to select the digital word length of your choice 16 20 or 24 bits If you want to set the digital word length to a lower value e g to record 24 bit signals with 16 bits on CD MD or DAT we recommend that you switch on the dither function so as to limit the distortion resulting from the omission of the additional bits to an inaudible minimum The LEDs 24 BIT 20 BIT and 16 BIT read the word length selected The DITHER switch enables dis
21. adiators heat registers stoves or other apparatus including amplifiers that produce heat 9 Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong are provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet 10 Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus 11 Only use attachments accessories specified by the manufacturer 12 Use only with the cart stand tripod bracket or table specified by the manufacturer or sold with the apparatus When a cart is used use caution when moving the cart apparatus combination to avoid injury from tip over LAL 13 Unplug this apparatus during lightning storms or when unused for long periods of time 14 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 15 CAUTION These service instructions are for use by qualified service perso
22. alanced and galvanically isolated A Ali analog inputs outputs servo balanced A Conceived and designed by BEHRINGER Germany Made in China We want to point out that the copyright of third parties must not be infringed despite the possibility of removing the copy protect bit with the help of the ULTRAMATCH PRO This device was not developed to produce unauthorized copies ULTRAMATCH PRO SRC2496 FOREWORD Dear Customer welcome to the team of BEHRINGER users and thank you very much for expressing your confidence in us by purchasing the SRC2496 Writing this foreword for you gives me great pleasure because it represents the culmination of many months of hard work delivered by our engineering team to achieve a very ambitious goal considerable improvement of an excellent piece of eguipment The ULTRAMATCH SRC2000 has for guite a long time been a standard tool used by numerous studios The task of designing our new ULTRAMATCH PRO SRC2496 certainly meant a great deal of responsibility which we assumed by focusing on you the discerning user and musician Meeting your expectations also meant a lot of work and night shifts But it was fun too Developing a product usually brings a lot of people together and what a great feeling it is when all who participated in such a project can be proud of what they ve achieved It is our philosophy to share our enjoyment with you because you are the most important member of the BEHRING
23. ample rate conversion 11 4 2 AES EBU and S PDIF standards 12 5 INSTALLAT ION van aaa ae ni avo 12 5 1 General connection notes 12 5 2 Analog inputs and Outputs 12 5 3 Digital inputs and outputs 13 5 3 1 Balanced XLR Connection 13 5 3 2 Unbalanced coaxial RCA connection 13 5 3 3 Optical connection aviarne aaa teo ed bna 13 5 34 NV OROGIOCK assess a a a ME FARNI 13 5 3 5 Connecting with an adapter 14 5 4 Headphones output 14 6 SPECIFICATIONS cccscsssesesenssecssucesssussesesuessuees 15 7 WARRANTY Vsaj runo oje ee ee kda 16 ULTRAMATCH PRO SRC2496 1 INTRODUCTION The BEHRINGER ULTRAMATCH PRO is a fully digital signal processor integrating 24 bit A D and D A converters With its wide range of features it provides a powerful state of the art interface between the physical reality of music and its recording in digital form To retain the true authenticity of your music we not only developed a strong link between analog recording technology and the huge variety of signal processing possi bilities available in the digital world but also designed the ULTRAMATCH PRO SRC2496 to function as a universal inter face between the various digital formats and sampli
24. arkers in professional format AES EBU Table 4 3 presents the corresponding consumer format data as normally used with S PDIF connections 2 3 4 5 6 7 Category code Gen st Source number Channel number Sampling freguency Clock acc Reserved Tab 4 3 Markers in consumer format IEC 958 Type II S PDIF The first bit already defines whether the following bits are to be understood as professional or consumer format bits As shown the audio information can be found at the same position in the data stream in principle making both formats compatible There are however information blocks that differ in both norms If a piece of equipment such as a commercially available DAT recorder has only one S PDIF input the equipment will usually understand that format only It will thus usually stop when supplied with professional format data The reason is simple as shown in the illustrations processing a professionally coded signal with equipment that can only understand consumer format can lead to malfunctions relating to the copy protect bit and the emphasis However this point is not always readily evident as is the case with plug and socket connectors e g 1 4 TRS connectors mini jacks and special adapters for Sub D instead of XLR connectors A lot of equipment has no stop function while other equipment can understand both formats despite having only one type of connector In all of these cases
25. as incorrect formats significantly deviating or unstable sampling rates as long as they do not deviate by more than 12 5 from the current sampling rate will also be corrected by the ULTRAMATCH PRO in real time thus ensuring the successful transfer of your audio data 3 2 2 Hard disk recording Hard disk recording applications also reguire a uniform sampling rate if possible the one used by the subseguent playback medium CD As it can convert audio material from 32 48 88 2 or 96 kHz to the standard 44 1 kHz the ULTRAMATCH PRO makes sure that all sources can be used to feed audio material by way of a digital connection Of course the ULTRAMATCH PRO can be inserted at any point in the audio processing path i e also between the PC and the DAT recorder Therefore with uncritical audio material you can process the material at 32 kHz in the recording system or higher depending on which sampling rates can be processed by the HD recording system and subsequently convert the completely edited material while transferring it to a DAT recorder at 44 1 kHz or even at 48 kHz 3 2 3 Master slave problem solver When a digital mixing console is used it is at this point if not earlier that master slave problems will be encountered The explanation is simple When using CD players DAT recorder and HD recording systems in their normal applications the responsibilities are clearly defined The playback device is the master the
26. ch to switch over between these two operating modes 2 1 3 Output section ama 96 kHz ama PLL LOCK e 88 2 kHz uma 48 kHz ema INTERNAL ama 24 BIT ama 44 1 kHz ema EXTERNAL mmm AES EBU m 20 BIT ema 32 kHz ame DIGIN ama S PDIF ume 16 BIT SAMPLE RATE CLOCK FORMAT Fig 2 5 Output section ema COPY ume DITHER ame EMPH ume ORIG WORD LENGTH DITHER EMPHASIS COPY The SAMPLE RATE switch selects the sampling rate to which the input signal is to be converted or made available at the outputs For this purpose the SRC2496 must be set to internal mode i e it has to function as a master unit see sections and 21 2 CONTROL ELEMENTS ULTRAMATCH PRO SRC2496 The LEDs 32 kHz 44 1 kHz 48 kHz 88 2 kHz and 96 kHz read the sampling rate selected with the SAMPLE RATE switch If the sampling rate is preset by an external wordclock or generated via the digital input signal the LEDs light up constantly thus reading the external sampling rate with a deviation of 2 kHz The next value deviation of gt 2 kHz is displayed by one of the LEDs flashing The CLOCK switch allows you to select the source determining the sampling rate at the digital output of your ULTRAMATCH PRO The PLL LOCK LED shows you that your SRC2496 is processing properly the wordclock signals applied The INTERNAL LED lights up when the SRC2496 generates the sampling rate by itself master which is the preferred mode for the ULTRAMATCH PRO
27. fresher but is still easy to operate The front panel of your ULTRAMATCH RO features a functional and easily understandable layout On the left hand half of the panel you will find the monitor left and input sections right the right hand half includes the mode left and output sections right Just imagine the signal passing through the unit from left to right and the design logic becomes clear The monitor section enables you to monitor analog input output signals The level meter reads the analog input level and allows you to adjust it optimally The status LEDs in the input section make it easy to check which type of digital signal AES EBU or S PDIF is being received and also display its sampling rate Since the ULTRAMATCH PRO is automatically synchronized to any input signals within a range from 31 Hz to 100 kHz there is no need for dedicated sampling rate selector switches on the input side In the mode section you can see which of the SRC2496 s two basic functions A D and D A converter or sampling rate converter is currently active Select the function of your choice at the touch of a button The output section gives you the buttons and displays to adjust a variety of parameters for the digital output signal The ULTRAMATCH PRO stores the last setting made before power down so you can continue from where you stopped when you turn the unit back on again In a later section of this manual we will give you a detailed des
28. g signals e g when using a high end D A converter between a CD Player and amplifier from the ULTRAMATCH PRO via unbalanced connectors e g hi fi amplifier or tape recorder is not a problem too 12 5 INSTALLATION ULTRAMATCH PRO SRC2496 I When using the XLR connectors in an unbalanced configuration pins 1 and 3 on the connectors inserted must be interconnected mixing console signal flow ULTRAMATCH PRO subgroup output analog input shield Fig 5 1 Unbalanced transmission to the ULTRAMATCH PRO ULTRAMATCH PRO device A input analog output hi fi amplifier Nu E li Ks Z za a signal flow shield Fig 5 2 Unbalanced transmission from the ULTRAMATCH PRO 5 3 Digital inputs and outputs 5 3 1 Balanced XLR connection The digital XLR inputs and outputs are not bound by the AES EBU protocol They accept and deliver data streams in both the professional and the consumer format Should the RCA input already be occupied by another device it is even possible to connect the RCA output of say a CD player to the ULTRAMATCH PRO XLR input by using an adapter To do this you will need a cable such as the one shown in fig 5 2 except that instead of a female XLR connector a plug must be mounted The following figure illustrates how to correctly connect the balanced input and output connectors Basically it is the same wiring scheme normally used for balanced audio connections such as for examp
29. ginal copy protect mechanism used in DAT recorders was simple but effective It was impossible to make digital recordings from a CD Later a step by step mechanism was introduced with SCMS which allowed at least for one digital copy from CD The routine implemented in SCMS depends on the generation x copy and the origin category of the digital audio material In professional studio engineering a copy protect mechanism does not make any sense which is why there is none defined in the AES EBU standard Since many studios use inexpensive consumer devices for cost reasons copy protect and or format incompatibility problems professional consumer are encountered frequently The SRC2496 can ignore all types of copy protect information and generate a new completely free marker that allows for multiple copying Thus you can use your ULTRAMATCH PRO to copy material from one consumer DAT to another Further information on this subject can be found in chapter 2 1 3 section 28 3 4 Noise reduction with emphasis A very special feature is the option to influence the set emphasis bit Emphasis here means a noise reduction process with a treble boost step involved prior to recording This treble boost is undone during playback A specific bit emphasis bit in the digital data stream contains the information whether or not 10 3 APPLICATIONS ULTRAMATCH PRO SRC2496 the signal has been processed with this technique It is however NOT a
30. gnals from the subgroup outputs on your mixing console you can record several signal sources at the same time by assigning routing them to the corresponding subgroups In practice the ingenious design of the SRC2496 proves to be versatile to the point that you can also solve problems which are not directly related to a normal studio environment For example digital hi fi recording equipment such as MD recorders Mini Disc have been met with widespread popularity in home systems Unfortunately however such equipment cannot record with 32 kHz using their digital input Thus it is impossible to record digital broadcasting programs directly to digital D A and A D conversion steps are inevitable Not so with the ULTRAMATCH PRO as it can convert the broadcast signal from 32 kHz to any other common sampling rate and also remove any form of copy protect information A second wiring setup shows how to copy tape recordings for restoring and subsequent archiving purposes on digital media 3 APPLICATIONS Digital input Workstation Fig 3 2 Example A D conversion of tape recordings gt Since subgroup outputs on mixing consoles as well as tape and line outputs on hi fi amplifiers usually provide unbalanced signals only please note the corresponding instructions on how to connect the SRC2496 chapter 5 INSTALLATION 3 1 2 Converting dig
31. hase to BEHRINGER Spezielle Studiotechnik GmbH in accordance with the conditions stipulated in 3 Failure to return the card in due time date as per postmark will void any extended warranty claims Based on the conditions herein the buyer may also choose to use the online registration option via the Internet www behringer com or www behringer de 2 WARRANTY 1 BEHRINGER BEHRINGER Spezielle Studiotechnik GmbH including all BEHRINGER subsidiaries listed on the enclosed page except BEHRINGER Japan warrants the mechanical and electronic components of this product to be free of defects in material and workmanship for a period of one 1 year from the Original date of purchase in accordance with the warranty regulations described below If the product shows any defects within the specified warranty period that are not excluded from this warranty as described under 4 BEHRINGER shall at its discretion either replace or repair the product using suitable new or reconditioned parts In the case that other parts are used which constitute an improvement BEHRINGER may at its discretion charge the customer for the additional cost of these parts 2 If the warranty claim proves to be justified the product will be returned to the user freight prepaid 3 Warranty claims other than those indicated above are expressly excluded 3 RETURN AUTHORIZATION NUMBER 1 To obtain warranty service the buyer or his authorized dealer mu
32. hm resistor Some devices also have a switchable terminating resistor in which case the T connector and terminating resistor are not necessary Wordclock output device A Wordclock input l ULTRAMATCH PRO signal flow a Gi 0 dok Fig 5 7 Unbalanced connection loop through of the wordclock input 5 3 5 Connecting with an adapter In certain cases it makes sense to connect the SRC2496 s inputs and outputs to other devices via a cable adapter If for example you wish to simultaneously connect two DAT recorders and each has only one RCA S PDIF connector you can easily connect one of the DAT recorders to the ULTRAMATCH PRO using an XLR RCA adapter The correct connection assignment of the adapter cable for this purpose can be found in fig 5 2 5 4 Headphones output The headphones output on the front panel of the SRC2496 is on a 1 4 TRS connector The connection assignment of the corresponding plug is shown in fig 5 8 Headphones connection with 1 4 TRS connector sleeve tip ground shield left signal strain relief clamp sleeve ring ring right signal tip lea Fig 5 8 Correct wiring assignment for headphones connection gt Please note that high volume levels can damage your hearing and or your headphones Turn the PHONES control to the far left before turning on the device Always take care to keep the volume level at an appropriate level 14 5 INSTALLATION ULTRAMATCH PRO SRC2496 6
33. in the gearwheel It synchronizes the signal coming from the devices to be synchronized while converting to the desired sampling rate in compliance with the wordclock signal In a studio with a central clock generator it is therefore possible to use the ULTRAMATCH PRO to connect any unit to any other regardless of any other options available gt Even if the central clock does not correspond exactly to one of the sampling rates the ULTRAMATCH PRO will assign a corresponding marker to the output signal This marker depends on the automatically detected and displayed sampling rate which is important because DAT recorders usually refuse to enter record mode if an incorrect sampling rate has been indicated 3 2 4 Bridging unformatted passages DAT recorders in particular produce tiny format gaps between individual recorded passages on the tape when intermittent recordings are made Also when you transfer older recordings it can happen that short passages with a different sampling rate than that of the current recording remain stored on tape In such cases the ULTRAMATCH PRO converts this host of single pieces of information into a continuous data stream with a fixed sampling rate Even if the DAT recorder or any other digital source is stopped or switched off the ULTRAMATCH PRO will continue to generate a continuous signal depending on the digital signal if synchronized to it 3 3 Removing copy protect information The ori
34. ital to analog Using the ULTRAMATCH PRO as a digital to analog converter is interesting for all applications in which signals must be made audible again after digital processing e g to circumvent D A converters of inferior quality in equipment with a digital output sound card This can be useful if your sound card is not shielded from electromagnetic interference generated by power supplies or graphics cards for example You can feed the audio signal from the digital interface of the sound card to one of the digital inputs on the SRC2496 and then take it from the analog outputs The type of cable required for connecting the sound card to the ULTRAMATCH PRO depends on the output connector used gt Detailed information on wiring setups can be found in chapter 5 INSTALLATION 3 1 3 Parallel A D and D A conversion The SRC2496 offers you the possibility to simultaneously convert analog signals into digital and vice versa In A D and D A converter mode you can only convert from digital to analog if the CLOCK switch in the output section has been set to DIG IN In this case the sampling rate will be determined by the digital signal applied Otherwise the ULTRAMATCH PRO can only be operated as an A D converter and the D A converter function will be muted In SRC mode the D A converter is always active ULTRAMATCH PRO SRC2496 3 2 Sample rate conversion No matter what type of digital audio signal you feed into the ULTRA
35. l over longer cable lengths or to restore attenuated and distorted signals 3 6 Correcting incorrect sample rates The sample rate of any equipment is subject to fluctuation due to temperature and ageing effects Normally an automatic locking circuit ensures reliable operation even with varying or slightly fluctuating clock signals If such fluctuations exceed a certain level however the receiving equipment cannot be synchronized any longer to the clock rate supplied and therefore fails to function properly Your ULTRAMATCH PRO is totally free from such restrictions as it works over the entire bandwidth from 31 to 100 kHz rather than only within a small range around the actual sampling rate The signal output by the SRC2496 is always synchronized correctly to the value selected Thus you can use your ULTRAMATCH PRO to rescue and work with sampling rates that have been modified deliberately vari pitch function on sampling keyboards or CD players or fail to fall within the adjusted range due to rate fluctuations 3 Vari speed application There are several reasons for modifying the speed of a digital playback e g to change the pitch or synchronize the playback to other equipment In such cases the ULTRAMATCH PRO can track the sampling rate as it changes and then output the signal with a fixed rate of 44 1 kHz or any other selectable or wordclock defined value Thus it reliably removes sampling rate fluctuations which c
36. le the connection between a microphone and a mixing console ULTRAMATCH PRO input l signal flow device A output sim S O SE shield Fig 5 3 Connecting the ULTRAMATCH PRO in a balanced configuration Selecting the correct cable is not critical For distances of less than 20 m generally available microphone cables have no negative effect For greater distances or higher reguirements mobile operation powerful high freguency fields however you should use special 110 Ohm cable with double shielding 5 3 2 Unbalanced coaxial RCA connection The RCA inputs and outputs in turn are not bound to the S PDIF format They accept and deliver data streams in both the professional and the consumer format It is even possible to connect the XLR output e g from the BEHRINGER ULTRA CURVE PRO DSP8024 or other equipment to the RCA input on the ULTRAMATCH PRO by using an adapter Whether or not the reverse will work namely connecting the ULTRAMATCH PRO s RCA connector to the XLR input of another unit depends on the sensitivity of the XLR input in question The following figure illustrates the correct connection for unbalanced input and output connections via RCA plugs signal flow b ULTRAMATCH PRO input device A output vz m jih IA shield Fig 5 4 Connecting the ULTRAMATCH PRO in an unbalanced configuration Basically it is the same wiring scheme as is the norm for unbalanced audio connec
37. le protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures e Reorient or relocate the receiving antenna e Increase the separation between the equipment and receiver e Connect the equipment into an outlet on a circuit different from that to which the receiver is connected e Consult the dealer or an experienced radio TV technician for help This device complies with Part 15 of the FCC rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation Important information Changes or modifications to the equipment not expressly approved by MUSIC Group can void the user s authority to use the equipment behringer com
38. n impossible if it features optical interfaces Such incompatibilities between inputs and outputs are definitely a thing of the past with the ULTRAMATCH PRO For example if the CD player only has an optical digital output while the DAT recorder is equipped with a coaxial RCA input your SRC2496 will easily eliminate the resulting connection problems with its three inputs and outputs in all formats Your ULTRAMATCH PRO allows for interconnecting virtually all equipment that is available on the market today 3 10 Patchbay splitter The digital outputs of your ULTRAMATCH PRO can all be operated at the same time In this case the input selector functions as a kind of miniature patchbay determining which signal is sent to the output It is not necessary to switch over the output because you can freely select on the down stream devices which signal to accept example recording active inactive Therefore the outputs of the ULTRAMATCH PRO carry the identical signal all the time and are operative simultaneously The parallel operation of all three outputs enables you to use your SRC2496 as a splitter which is useful for copying material to several DAT recorders With some special types of equipment in particular that does not allow for looping through the digital data from the input to the output this useful function makes it possible to split up the signal 4 TECHNICAL BACKGROUND 4 1 Ashort digression into digital sample rate conversion
39. nded exclusively to the original buyer customer of retail dealer and is not transferable to anyone who may subsequently purchase this product No other person retail dealer etc shall be entitled to give any warranty promise on behalf of BEHRINGER 6 CLAIM FOR DAMAGES Failure of BEHRINGER to provide proper warranty service shall not entitle the buyer to claim consequential damages In no event shall the liability of BEHRINGER exceed the invoiced value of the product 7 OTHER WARRANTY RIGHTS AND NATIONAL LAW 1 This warranty does not exclude or limit the buyer s statutory rights provided by national law in particular any such rights against the seller that arise from a legally effective purchase contract 2 The warranty regulations mentioned herein are applicable unless they constitute an infringement of national warranty law Customers in the European Union please contact BEHRINGER Germany Support for further details Technical specifications and appearance subject to change without notice The information contained herein is correct at the time of printing ADAT AKM as well as the names of companies institutions or publications pictured or mentioned and their respective logos are registered trademarks of their respective owners Their use neither constitutes a claim of the trademarks by BEHRINGER nor affiliation of the trademark owners with BEHRINGER BEHRINGER accepts no liability for any loss which may be s
40. nerated by conversion from a digital format ANALOG INPUTS Use these balanced analog XLR inputs stereo to feed in analog line level signals Please note the instructions on level adjustment given in chapter 2 1 1 section 4 3 APPLICATIONS Your ULTRAMATCH PRO will soon prove to be a practical tool of valuable help in almost any situation Its straightforward user interface is fun to work with Don t be misled by the plain design the SRC2496 is a really flexible tool in a variety of applications You don t need to own a professional recording studio to benefit from the wide range of features and functions implemented in the SRC2496 Problems with the interfacing of optical and coaxial connectors removing copy protect bits converting sampling rates from 48 to 44 1 or 32 kHz all of these tasks are quite common daily routines even in a home recording environment Additionally the ULTRAMATCH PRO is the logical choice as a high end A D and D A converter or enhanced source selector for digital inputs whenever you need an inexpensive and reliable alternative to equipment with considerably higher prices 3 1 A D and D A conversion with the ULTRAMATCH PRO 3 1 1 Converting analog to digital The ULTRAMATCH PRO is equipped with high grade A D and D A converters With the SRC2496 you own an excellent tool for preparing your analog audio data for digital processing or for converting analog signals directly and storing them on a
41. ng rates Thus incompatibilities between different equipment with regard to modified connectors transmitted signals and applied standards are definitely a thing of the past gt This manual first describes the terminology used so that you can fully understand the SRC2496 and its functions Please read the manual carefully and keep it for future reference 1 1 The design concept The philosophy behind BEHRINGER products guarantees no compromise circuit design and the best choice of components We only use low tolerance resistors and capacitors high grade switches and buttons as well as other select components to make sure that you can fully benefit from state of the art 24 bit 96 kHz technology with regard to low noise and high dynamics With the ULTRAMATCH PRO you have purchased some cutting edge technology Today a lot of hi fi equipment is already equipped with a digital interface so the SCR2496 can not only be used as a high end A D and D A converter in your studio but also raises your home hi fi system to a new level in terms of dynamics low distortion and definition It is thus possible to replace one of the weak points in the signal chain with an absolutely powerful unit The SRC2496 provides you with the functionality of a first class A D and D A converter an outstanding sampling rate converter and a digital patchbay Additionally it can be deployed as a format converter to set or remove copy bits and as a signal re
42. nnel only To reduce the risk of electric shock do not perform any servicing other than that contained in the operation instructions unless you are qualified to do so ULTRAMATCH PRO SRC2496 ULTRAMATCH PRO Ultra high resolution 24 bit 96 kHz A D D A sample rate and format converter ee oe DR I eee ew A High end 24 bit 96 kHz AID me D A converters for ultimate signal purity A Converts any sample rate between 31 and 100 kHz into 32 44 1 48 88 2 or 96 kHz sample rates A Flexible format conversion between AES EBU and S PDIF coaxial or optical A Ultra high quality signal output with 16 20 or 24 bit resolution A Universal sample rate synchronization via wordclock or digital input A Allows parallel A D and D A conversion at identical sample rate A Precise metering for input output signal as well as powerful headphone monitoring A Dithering automatically adapted for word length conversion A Allows direct manipulation of emphasis and copy protection bits A High precision quartz clock generator removes jitter and corrects off tune incorrect sample rates A Extremely fast tracking supports varispeed applications A Self adjusting anti aliasing filter with exceptionally steep edge A Consumer devices e g DAT recorders can be synchronized with the studio clock A Allthree outputs XLR RCA optical simultaneously operational splitter A Inputs separately selectable patchbay functionality A Ali digital inputs outputs b
43. nt to facilitate illegal copying 2 2 Rear panel of the ULTRAMATCH PRO BEHRINGER ULTRAMATCH PRO MODEL SRC2496 CAUTION reptace Fuse WITH SAME FUSE TYPE AND RATING ATTENTION utiiser UN FUSIBLE DE RECHANGE DE MEME TYPE ET CALIBRE 230 V 50 60 Hz 15 W FUSE T125 mAH 250 V Fig 2 6 Mains connector fuse holder MAINS CONNECTOR FUSE HOLDER Use the power cord supplied with the SRC2496 to connect the unit to the mains Please note the instructions given in chapter 1 2 Blown fuses should only be replaced by fuses of the same type and rating ULTRAMATCH PRO SRC2496 SERIAL NUMBER c RISK AT ISGUE DE CHOS vrenja oars DATE CODE A AUTIO OF ELECTRIC SHOCK DO NOT OPEN TENTION NE P IR Fig 2 7 Serial number on the cover SERIAL NUMBER Please take the time to fill out and return the warranty card within 14 days after the date of purchase so as to benefit from our extended warranty Or register online at www behringer com WORDCLOCK CIN Fig 2 8 Wordclock connector The BNC connector WORDCLOCK is a high impedance connector with no internal terminating impedance 75 Ohms Use it to connect equipment for external synchronization of your ULTRAMATCH PRO Please note the instructions given in chapter 3 2 3 XLR OPTICAL RCA yu DIGITAL OUTPUTS Fig 2 9 Digital outputs The digital XLR output is the standard output connector for AES EBU signals AES EBU LED light
44. o export models designed exclusively for 120 V operation gt If you set the unit to a different mains voltage be sure to use a fuse of the correct type and rating In chapter 6 TECHNICAL SPECIFICATIONS you will find the matching fuse type for your local mains voltage The mains connection is made by using the enclosed power cord and a standard IEC receptacle It meets all of the international safety certification requirements I Please make sure that all units have a proper ground connection For your own safety never remove or disable the ground conductor of the unit or of the AC power cord gt Please ensure that only qualified persons install and operate the SRC2496 During installation and operation the user must have sufficient electrical contact to earth Electrostatic discharges might affect the operation of the unit 2 CONTROL ELEMENTS 2 1 Front panel of the ULTRAMATCH PRO SRC2496 z ag ll A gt S ae 5 HE zum on SH e O 2 Fig 2 1 Front panel control elements Monitor and input sections The monitor section enables you to adjust the signal level applied to the analog input and features a controllable headphone connector A clearly structured LED array provides you with detailed information on the various parameters of the digital input signal Mode section Here you can determine whether your ULTRAMATCH PRO is working as a sampling rate converter or A D D A
45. ould otherwise make it impossible to process the digital audio material any further in the digital domain gt At its digital input the ULTRAMATCH PRO accepts sampling rate fluctuations of up to 12 from the adjusted sampling rate without producing any distortion at its output When things get worse the connection will not be interrupted but temporary drops in the signal quality distortion may occur 3 8 Format converter Digital data transfer is frequently affected by problems with the format required While some devices specifically need S PDIF signals on the input side others can only output AES EBU With the SRC2496 this problem is now history The input of your ULTRAMATCH PRO readily accepts any standard used today On the output side you can select either AES EBU or S PDIF so that it is just a matter of one key press to realize the successful transfer of your audio material 3 9 Format interface Many CD players have no coaxial but only an optical output Some DAT recorders on the other hand only have a coaxial input Digital interface cards for personal computers are usually equipped either with optical or coaxial connectors So when you try to transfer data from one unit to another you are likely to encounter incompatibility problems in that one unit has an optical connector while the other has a coaxial RCA connector Connection to professional equipment is difficult because of the XLR connectors used there or eve
46. s up When S PDIF is selected the XLR output also provides this signal Further information on these connectors can be found in chapter 5 3 This is the OPTICAL Toslink output connector of the ULTRAMATCH PRO When the unit is shipped the optical Toslink input output connectors have dummy plugs attached to protect them from dirt and to prevent the emission of light These dummy plugs can be removed easily if you wish to use the connectors The digital standard format for this output is S PDIF However you can also transmit AES EBU signals via this output RCA output The digital standard format for this output is also S PDIF If AES EBU has been selected in the output section this output also provides AES EBU signals Unlike the XLR connector however this output allows for unbalanced signal transmission RCA OPTICAL XLR g DIGITAL INPUTS Fig 2 10 Digital inputs 35 37 DIGITAL INPUTS The RCA input is the digital standard input for S PDIF signals The OPTICAL input Toslink is also used for S PDIF signals XLR input The digital XLR input is the standard input connector for AES EBU signals It can also be used to feed in S PDIF signals like the RCA and OPTICAL inputs which can be used to process AES EBU signals in addition to the S PDIF format ANALOG OUTPUTS ANALOG INPUTS Fig 2 11 Analog outputs and inputs ANALOG OUTPUTS These balanced analog XLR outputs stereo provide the analog signal ge
47. st call BEHRINGER see enclosed list during normal business hours BEFORE returning the product All inquiries must be accompanied by a description of the problem BEHRINGER will then issue a return authorization number 2 Subsequently the product must be returned in its original shipping carton together with the return authorization number to the address indicated by BEHRINGER 3 Shipments without freight prepaid will not be accepted 4WARRANTY REGULATIONS 1 Warranty services will be furnished only if the product is accompanied by a copy of the original retail dealers invoice Any product deemed eligible for repair or replacement under the terms of this warranty will be repaired or replaced 2 If the product needs to be modified or adapted in order to comply with applicable technical or safety standards on a national or local level in any country which is not the country for which the product was originally developed and manufactured this modification adaptation shall not be considered a defect in materials or workmanship The warranty does not cover any such modification adaptation irrespective of whether it was carried out properly or not Under the terms of this warranty BEHRINGER shall not be held responsible for any cost resulting from such a modification adaptation 3 Free inspections and maintenance repair work are expressly excluded from this warranty in particular if caused by improper handling of the product by the
48. t section should read the same status as the EMPH LED in the input section In the rare case of a signal containing an emphasis bit without any treble boost applied you can correct this here and switch off the emphasis bit detailed information can be found in chapter 3 4 The COPY switch copyright allows you to set the status of the copy bits in the transmitted data stream The LEDs COPY and ORIG inform you about the current status of the copy protection digital recording only once COPY LED 6 n ORGLE on digital recording not possible COPY LED on ORIG LED digital recording unlimited COPY LED off ORGLE o woo copvaeo w ORGLED m Tab 2 1 Overview of copy bit settings If both COPY and ORIG light up you can make one copy only Subseguently the data will be copy protected If only COPY lights up digital copies cannot be made If both LEDs are out you can make digital recordings without any limitations Press the switch to change the status of the determining bits and allow for unrestricted copying I This option applies exclusively to S PDIF signals because the Serial Copy Management System SCMS exists in this format only Signals based on the professional AES EBU format can be copied freely gt Even though removing the copyright bit is possible we would like to alert you about the fact that copyright and duplication rights must be safeguarded We did not produce this equipme
49. tion 6 2 1 3 Output section 6 2 2 Rear panel of the ULTRAMATCH PRO T 3 APPLICATIONS vni a ea ka aa a nah 8 3 1 A D and D A conversion with the ULTRAMATCH PRO 8 3 1 1 Converting analog to digital 8 3 1 2 Converting digital to analog 9 3 1 3 Parallel A D and D A conversion 9 3 2 Sample rate conversion 10 3 2 1 Typical studio application with DAT 10 3 2 2 Hard disk recording 10 3 2 3 Master slave problem solver 10 3 2 4 Bridging unformatted passages 10 3 3 Removing copy protect information 10 3 4 Noise reduction with emphasis 10 3 5 Line booster signal refresher 11 3 6 Correcting incorrect sample rates 11 3 7 Vari speed application 11 3 8 Format converter e 11 3 9 Format interface 11 3 10 Patchbay splitter 11 4 TECHNICAL BACKGROUNLD nana 11 4 1 A short digression into digital s
50. tions in hi fi systems e g between a CD player and amplifier For distances less than 10 m standard coaxial line cable has no negative influence However should greater distances be involved you should use XLR 5 3 3 Optical connection Toslink optical inputs and outputs are also not bound by the S PDIF format They accept and deliver data streams in both the professional and the consumer format Optical connections are by nature not sensitive to electric interference fields easy to cable and astonishingly robust The following figure illustrates how to correctly connect the optical input and output connections ULTRAMATCH PRO optical input device A optical output signal flow TT a Mlja Fig 5 5 Connecting the ULTRAMATCH PRO optically via Toslink gt For many consumer devices the consumer format at the optical input is an absolute necessity otherwise they do not accept the signal IB The ULTRAMATCH PRO does not support the ADAT multi track format which can thus neither be looped through nor converted ADAT is a registered trademark of the Alesis Corporation 5 3 4 Wordclock Feeding a wordclock signal into the rear BNC connector enables external synchronization of the ULTRAMATCH PRO Wordclock signals are normally distributed in a network configuration i e are relayed and terminated with 75 Ohm coaxial cable BNC T adapters and terminating resistors Commercially available BN
51. uffered by any person who relies either wholly or in part upon any description photograph or statement contained herein Colours and specification may vary slightly from product Products are sold through our authorised dealers only Distributors and dealers are not agents of BEHRINGER and have absolutely no authority to bind BEHRINGER by any express or implied undertaking or representation No part of this manual may be reproduced or transmitted in any form or by any means electronic or mechanical including photocopying and recording of any kind for any purpose without the express written permission of BEHRINGER Spezielle Studiotechnik GmbH BEHRINGER is a registered trademark ALL RIGHTS RESERVED 2004 BEHRINGER Spezielle Studiotechnik GmbH Hanns Martin Schleyer Str 36 38 47877 Willich Munchheide II Germany Tel 49 2154 9206 0 Fax 49 2154 9206 4903 16 7 WARRANTY FEDERAL COMMUNICATIONS COMMISSION COMPLIANCE INFORMATION FC BEHRINGER ULTRAMATCH PRO SRC2496 Responsible party name MUSIC Group Services USA Inc Address 18912 North Creek Parkway Suite 200 Bothell WA 98011 USA Phone Fax No Phone 1 425 672 0816 Fax 1 425 673 7647 ULTRAMATCH PRO SRC2496 complies with the FCC rules as mentioned in the following paragraph This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonab
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