IMPORTANT SAFETY INSTRUCTIONS DETAILED SAFETY INSTRUCTIONS: 1) Read thee intruction 2) Keep thee intruction 3) Heed all warning 4) Follow all intructi

Transcription

1 Uer Manual Verion 1 2 June 2004 ENGLISH

2 IMPORTANT SAFETY INSTRUCTIONS DETAILED SAFETY INSTRUCTIONS: 1) Read thee intruction 2) Keep thee intruction 3) Heed all warning 4) Follow all intruction CAUTION: WARNING: To reduce the rik of electric hock, do not remove the top cover (or the rear ection) No uer erviceable part inide; refer ervicing to qualified peronnel To reduce the rik of fire or electric hock, do not expoe thi appliance to rain and moiture The apparatu hall not be expoed to dripping or plahing and no object filled with liquid, uch a vae, hall be placed on the apparatu Thi ymbol, wherever it appear, alert you to the preence of uninulated dangerou voltage inide the encloure voltage that may be ufficient to contitute a rik of hock Thi ymbol, wherever it appear, alert you to important operating and maintenance intruction in the accompanying literature Pleae read the manual 5) Do not ue thi apparatu near water 6) Clean only with dry cloth 7) Do not block any ventilation opening Intall in accordance with the manufacturer intruction 8) Do not intall near any heat ource uch a radiator, heat regiter, tove, or other apparatu (including amplifier) that produce heat 9) Do not defeat the afety purpoe of the polarized or grounding-type plug A polarized plug ha two blade with one wider than the other A grounding type plug ha two blade and a third grounding prong The wide blade or the third prong are provided for your afety If the provided plug doe not fit into your outlet, conult an electrician for replacement of the obolete outlet 10) Protect the power cord from being walked on or pinched particularly at plug, convenience receptacle, and the point where they exit from the apparatu 11) Only ue attachment/acceorie pecified by the manufacturer 12) Ue only with the cart, tand, tripod, bracket, or table pecified by the manufacturer, or old with the apparatu When a cart i ued, ue caution when moving the cart/apparatu combination to avoid injury from tip-over 13) Unplug thi apparatu during lightning torm or when unued for long period of time 14) Refer all ervicing to qualified ervice peronnel Servicing i required when the apparatu ha been damaged in any way, uch a power upply cord or plug i damaged, liquid ha been pilled or object have fallen into the apparatu, the apparatu ha been expoed to rain or moiture, doe not operate normally, or ha been dropped 15) CAUTION - Thee ervice intruction are for ue by qualified ervice peronnel only To reduce the rik of electric hock do not perform any ervicing other than that contained in the operation intruction unle you are qualified to do o 2

3 ULTRAMATCH PRO Ultra high-reolution 24-bit/96 khz A/D-D/A, ample rate and format converter High-end 24-bit/96 khz A/D and D/A converter for ultimate ignal purity SRC2496 Convert any ample rate between 31 and 100 khz into 32, 44 1, 48, 88 2 or 96 khz ample rate Flexible format converion between AES/EBU and S/PDIF (coaxial or optical) Ultra high-quality ignal output with 16-, 20- or 24-bit reolution Univeral ample rate ynchronization via wordclock or digital input Allow parallel A/D and D/A converion at identical ample rate Precie metering for input/output ignal a well a powerful headphone monitoring Dithering automatically adapted for word length converion Allow direct manipulation of emphai and copy-protection bit High-preciion quartz clock generator remove jitter and correct off-tune, incorrect ample rate Extremely fat tracking upport varipeed application Self-adjuting anti-aliaing filter with exceptionally teep edge Conumer device (e g DAT recorder) can be ynchronized with the tudio clock All three output (XLR, RCA, optical) imultaneouly operational (plitter) Input eparately electable (patchbay functionality) All digital input/output balanced and galvanically iolated All analog input/output ervo-balanced Conceived and deigned by BEHRINGER Germany Made in China * We want to point out that the copyright of third partie mut not be infringed depite the poibility of removing the copy protect bit with the help of the ULTRAMATCH PRO! Thi device wa not developed to produce unauthorized copie! 3

4 FOREWORD TABLE OF CONTENTS Dear Cutomer, welcome to the team of BEHRINGER uer and thank you very much for expreing your confidence in u by purchaing the SRC2496 Writing thi foreword for you give me great pleaure, becaue it repreent the culmination of many month of hard work delivered by our engineering team to achieve a very ambitiou goal: coniderable improvement of an excellent piece of equipment The ULTRAMATCH SRC2000 ha for quite a long time been a tandard tool ued by numerou tudio The tak of deigning our new ULTRAMATCH PRO SRC2496 certainly meant a great deal of reponibility which we aumed by focuing on you, the dicerning uer and muician Meeting your expectation alo meant a lot of work and night hift But it wa fun, too Developing a product uually bring a lot of people together, and what a great feeling it i when all who participated in uch a project can be proud of what they ve achieved It i our philoophy to hare our enjoyment with you, becaue you are the mot important member of the BEHRINGER team With your highly competent uggetion for new product you ve made a ignificant contribution to haping our company and making it ucceful In return, we guarantee you uncompromiing quality a well a excellent technical and audio propertie at an extremely reaonable price All of thi will enable you to give free rein to your creativity without being hampered by budget contraint We are often aked how we manage to produce uch high-quality device at uch unbelievably low price The anwer i quite imple: it you, our cutomer! Many atified cutomer mean large ale volume enabling u to get better purchaing term for component, etc In t it only fair to pa thi benefit on to you? Becaue we know that your ucce i our ucce too! I would like to thank all of you who have made the ULTRAMATCH PRO poible You have all made your own peronal contribution, from the developer to the many other employee at thi company, and to you, the BEHRINGER uer My friend, it been worth the effort! Thank you very much, 1 INTRODUCTION The deign concept Before you begin 5 2 CONTROL ELEMENTS Front panel of the ULTRAMATCH PRO SRC Monitor and input ection Mode ection Output ection Rear panel of the ULTRAMATCH PRO 7 3 APPLICATIONS A/D and D/A converion with the ULTRAMATCH PRO Converting analog to digital Converting digital to analog Parallel A/D and D/A converion Sample rate converion Typical tudio application with DAT Hard-dik recording Mater/lave problem olver Bridging unformatted paage Removing copy protect information Noie reduction with emphai Line booter, ignal refreher Correcting incorrect ample rate Vari-peed application Format converter Format interface Patchbay/plitter 11 4 TECHNICAL BACKGROUND A hort digreion into digital ample rate converion AES/EBU and S/PDIF tandard 12 5 INSTALLATION General connection note Analog input and output Digital input and output Balanced XLR connection Unbalanced coaxial RCA connection Optical connection Wordclock Connecting with an adapter Headphone output 14 6 SPECIFICATIONS 15 7 WARRANTY 16 Uli Behringer 4

5 1 INTRODUCTION The BEHRINGER ULTRAMATCH PRO i a fully digital ignal proceor integrating 24-bit A/D and D/A converter With it wide range of feature, it provide a powerful tate-of-the-art interface between the phyical reality of muic and it recording in digital form To retain the true authenticity of your muic, we not only developed a trong link between analog recording technology and the huge variety of ignal proceing poibilitie available in the digital world, but alo deigned the ULTRAMATCH PRO SRC2496 to function a a univeral interface between the variou digital format and ampling rate Thu, incompatibilitie between different equipment with regard to modified connector, tranmitted ignal and applied tandard are definitely a thing of the pat + Thi manual firt decribe the terminology ued, o that you can fully undertand the SRC2496 and it function Pleae read the manual carefully and keep it for future reference 1 1 The deign concept The philoophy behind BEHRINGER product guarantee nocompromie circuit deign and the bet choice of component We only ue low-tolerance reitor and capacitor, high-grade witche and button a well a other elect component to make ure that you can fully benefit from tate-of-the-art 24-bit/ 96 khz technology with regard to low noie and high dynamic With the ULTRAMATCH PRO you have purchaed ome cuttingedge technology Today, a lot of hi-fi equipment i already equipped with a digital interface, o the SCR2496 can not only be ued a a high-end A/D and D/A converter in your tudio, but alo raie your home hi-fi ytem to a new level in term of dynamic, low ditortion and definition It i thu poible to replace one of the weak point in the ignal chain with an abolutely powerful unit The SRC2496 provide you with the functionality of a firtcla A/D and D/A converter, an outtanding ampling rate converter and a digital patchbay Additionally, it can be deployed a a format converter, to et or remove copy bit, and a a ignal refreher but i till eay to operate The front panel of your ULTRAMATCH RO feature a functional and eaily undertandable layout On the left-hand half of the panel you will find the monitor (left) and input ection (right); the right-hand half include the mode (left) and output ection (right) Jut imagine the ignal paing through the unit from left to right and the deign logic become clear The monitor ection enable you to monitor analog input/output ignal The level meter read the analog input level and allow you to adjut it optimally The tatu LED in the input ection make it eay to check which type of digital ignal (AES/EBU or S/PDIF) i being received and alo diplay it ampling rate Since the ULTRAMATCH PRO i automatically ynchronized to any input ignal within a range from 31 Hz to 100 khz, there i no need for dedicated ampling rate elector witche on the input ide In the mode ection you can ee which of the SRC2496 two baic function (A/D and D/A converter or ampling rate converter) i currently active Select the function of your choice at the touch of a button The output ection give you the button and diplay to adjut a variety of parameter for the digital output ignal The ULTRAMATCH PRO tore the lat etting made before power-down, o you can continue from where you topped when you turn the unit back on again In a later ection of thi manual we will give you a detailed decription of how you can ue your ULTRAMATCH PRO in variou application 1 2 Before you begin Your ULTRAMATCH PRO wa carefully packed at the factory and the packaging i deigned to protect the unit from rough handling Neverthele, we recommend that you carefully examine the packaging and it content for any ign of phyical damage which may have occurred during tranit + If the unit i damaged, pleae do NOT return it to BEHRINGER, but notify your dealer and the hipping company immediately, otherwie claim for damage or replacement may not be granted Shipping claim mut be made by the conignee The BEHRINGER ULTRAMATCH PRO require one rack unit for intallation in a 19" rack Pleae allow for an additional 4" of rack depth for the rear panel connector For rack mounting, pleae ue M6 metal nut and bolt Be ure that there i enough air pace around the unit for cooling For example, to avoid overheating, do not place the ULTRAMATCH PRO on power amp + Before you connect your ULTRAMATCH PRO to the main, pleae make ure that your local voltage matche the upply voltage required by the unit! The fue holder at the AC power connector ha 3 triangular marking Two of thee three triangle will be aligned with one another The ULTRAMATCH PRO i et to the voltage hown next to thee marking and can be witched over by twiting the fue holder by 180 IMPORTANT: Thi doe not apply to export model deigned excluively for 120 V operation! + If you et the unit to a different main voltage, be ure to ue a fue of the correct type and rating! In chapter 6 TECHNICAL SPECIFICATIONS you will find the matching fue type for your local main voltage The main connection i made by uing the encloed power cord and a tandard IEC receptacle It meet all of the international afety certification requirement + Pleae make ure that all unit have a proper ground connection For your own afety, never remove or diable the ground conductor of the unit or of the AC power cord + Pleae enure that only qualified peron intall and operate the SRC2496 During intallation and operation the uer mut have ufficient electrical contact to earth Electrotatic dicharge might affect the operation of the unit 2 CONTROL ELEMENTS 2 1 Front panel of the ULTRAMATCH PRO SRC2496 Fig 2 1: Front panel control element Monitor and input ection The monitor ection enable you to adjut the ignal level applied to the analog input and feature a controllable headphone connector A clearly tructured LED array provide you with detailed information on the variou parameter of the digital input ignal Mode ection Here, you can determine whether your ULTRAMATCH PRO i working a a ampling rate converter or A/D-D/A converter Output ection The button in the output ection allow you to tailor the output ignal to meet your requirement Similarly to the input ection, the diplay provide you with all the information on the output ignal 2 CONTROL ELEMENTS 5

6 2 1 1 Monitor and input ection Fig 2 2: Input ection control element Ue the GAIN control to adapt the ignal level perfectly to the circuitry of your ULTRAMATCH PRO The level hould be a high a poible, but the 0 db LED hould only light up occaionally or never at all to avoid ditortion The PHONES control govern the headphone volume You can monitor either the analog output or input by etting the SOURCE witch accordingly The analog output alway provide the ignal applied to the elected digital input, o thi ignal can be monitored with the headphone, too + When the ULTRAMATCH PRO operate a an A/D-D/A converter, the digital input ignal i applied to the analog output only in DIG IN mode (ee, ) Thi i the tereo 1/4" TRS connector for your headphone The ANALOG IN and/or ANALOG OUT LED indicate which ignal (input or output) i being diplayed by the level meter The SOURCE witch route the analog input or output ignal to the level meter LEVEL METER The ignal hown here can alway be monitored with the headphone The EMPH LED how you whether or not the input ignal include an emphai marker Emphai i a highfrequency boot function that i applied during the digital recording but i undone during playback When the LED light up, the ignal wa emphai-proceed during recording You hould alway make ure that the EMPH LED in the input and output ection read the ame tatu The COPY LED (= copyright) light up when the input ignal wa upplied from a copy-protected data carrier The ORIG LED (= original) inform you that the audio ignal received i an original ignal, i e that it can be copied (ee chapter 2 1 3, ection ) The AES/EBU LED light up when an AES/EBU ignal ha been applied at the active input connector The ame hold true for the S/PDIF LED, i e when a conumer-format ignal ha been applied If the unit i et to A/D and D/A converter mode, the S/PDIF LED light up even when no digital ignal i preent Thi i due to the circuitry ued and doe not indicate a malfunction of the unit Further information on the format AES/EBU and S/PDIF can be found in chapter 4 2 Ue the SOURCE witch to elect the active input Only one digital input can be activated at a time However, in A/D-D/A converter mode, you can ue one digital input and the analog input imultaneouly (parallel A/D and D/A converion) For further information pleae refer to chapter The LED XLR, RCA and OPTICAL indicate the input activated by the uer Mode ection Fig 2 4: Mode ection The two LED SAMPLE RATE CONV and A/D & D/A CONV inform you about the operating mode of your SRC2496, i e ampling rate converter or A/D-D/A converter Fig 2 3: Input ection control element Thi LED array diplay the ampling rate of the digital input ignal One LED light up contantly when the ampling rate i kept accurately or doe not deviate from the nominal value by more than approx 2 khz Otherwie, the LED for the next value tart flahing Ue the MODE witch to witch over between thee two operating mode Output ection The LOCK LED light up when a valid digital ignal to which the ULTRAMATCH PRO can be ynchronized i applied to the active input When digital input ignal are being proceed, thi LED hould be on all the time, howing the preence of a table input ignal The ERROR LED warn you of erroneou (or the abence of any) input ignal It diplay variou error mode, uch a Unlock, Parity Error, Bi-Phae Error and Confidence Error The ignal i then checked a to whether or not it i an audio ignal Any detected error make the SRC2496 mute all of it output to protect down-tream audio equipment A long a the ERROR LED i lit, the ULTRAMATCH PRO cannot proce any input ignal Fig 2 5: Output ection The SAMPLE RATE witch elect the ampling rate to which the input ignal i to be converted or made available at the output For thi purpoe, the SRC2496 mut be et to internal mode, i e it ha to function a a mater unit (ee ection and ) 6 2 CONTROL ELEMENTS

7 The LED 32 khz, 44 1 khz, 48 khz, 88 2 khz and 96 khz read the ampling rate elected with the SAMPLE RATE witch If the ampling rate i preet by an external wordclock or generated via the digital input ignal, the LED light up contantly, thu reading the external ampling rate (with a deviation of ± 2 khz) The next value (= deviation of >2 khz) i diplayed by one of the LED flahing The CLOCK witch allow you to elect the ource determining the ampling rate at the digital output of your ULTRAMATCH PRO The PLL LOCK LED how you that your SRC2496 i proceing properly the wordclock ignal applied ULTRAMATCH PRO SRC2496 The EMPH LED light up when the emphai bit ha been et in the output ignal Ue the EMPHASIS witch to enable/ diable thi function To avoid ound deterioration, the LED in the output ection hould read the ame tatu a the EMPH LED in the input ection In the rare cae of a ignal containing an emphai bit without any treble boot applied, you can correct thi here and witch off the emphai bit (detailed information can be found in chapter 3 4) The COPY witch (= copyright) allow you to et the tatu of the copy bit in the tranmitted data tream The LED COPY and ORIG inform you about the current tatu of the copy protection: The INTERNAL LED light up when the SRC2496 generate the ampling rate by itelf (mater), which i the preferred mode for the ULTRAMATCH PRO acting a an A/D converter The EXTERNAL LED light up when the ampling rate i governed by an external wordclock ignal The external mode alo allow you to generate ampling rate at the output that could not be generated by the SRC2496 a a mater unit When the DIG IN LED light up, your SRC2496 ue the wordclock ignal included in the digital audio ignal fed into the unit Thi etting i ueful if you do not want to convert the ampling rate, but only the format of the digital output ignal (S/PDIF to AES/EBU or vice vera) digital recording only once COPY-LED on ORIG-LED on digital recording not poible COPY-LED on ORIG-LED digital recording unlimited COPY-LED ORIG-LED COPY-LED ORIG-LED on off off off off The FORMAT witch determine the format of the digital data tream on the output ide, a defined in the Channel Statu data Available format are AES/EBU and S/PDIF The LED AES/EBU and S/PDIF how the adjuted output format, which i preent at all three digital output Uing an appropriate cable (ee chapter 5 3 5) you could alo route an S/PDIF ignal from the XLR output to a econd unit, in cae the RCA output i already in ue Ue the WORDLENGTH witch to elect the digital word length of your choice (16, 20 or 24 bit) + If you want to et the digital word length to a lower value (e g to record 24-bit ignal with 16 bit on CD, MD or DAT), we recommend that you witch on the dither function, o a to limit the ditortion reulting from the omiion of the additional bit to an inaudible minimum The LED 24 BIT, 20 BIT and 16 BIT read the word length elected The DITHER witch enable/diable the dither function The correponding LED light up when thi function i active Here a concie explanation of the dither function: Whenever analog ignal are converted to digital (numerical value!), the finite number of digit available for the mathematical decription of the analog ignal (electrical voltage that are contant in the time and value domain) inevitably reult in rounding error and miinterpretation of the analog ignal (quantization error) In particular, ignal with a very mall amplitude are affected by an audible ytem error known a granular noie Such error can be uppreed by adding white noie Thi type of noie ha an exactly defined amplitude (minimum amplitude that can be detected only by meauring intrument and by no mean affect the audio ignal) and broadband frequency ditribution, and i called dither ignal Combine thi with the high internal reolution of 24 bit, and you can generate an audio ignal of excellent quality Reducing the digital word length (e g from 24 bit to 20 bit) alo mean a reduction of the reolution The reulting miinterpretation, which are more likely to reult by thi word length reduction can be purpoefully uppreed with the dither function Tab 2 1: Overview of copy bit etting If both COPY and ORIG light up, you can make one copy only Subequently, the data will be copy protected If only COPY light up, digital copie cannot be made If both LED are out, you can make digital recording without any limitation Pre the witch to change the tatu of the determining bit and allow for unretricted copying + Thi option applie excluively to S/PDIF ignal, becaue the Serial Copy Management Sytem (SCMS) exit in thi format only Signal baed on the profeional AES/EBU format can be copied freely + Even though removing the copyright bit i poible, we would like to alert you about the fact that copyright and duplication right mut be afeguarded We did not produce thi equipment to facilitate illegal copying! 2 2 Rear panel of the ULTRAMATCH PRO Fig 2 6: Main connector/fue holder MAINS CONNECTOR/FUSE HOLDER Ue the power cord upplied with the SRC2496 to connect the unit to the main Pleae note the intruction given in chapter 1 2 Blown fue hould only be replaced by fue of the ame type and rating 2 CONTROL ELEMENTS 7

8 Fig 2 7: Serial number on the cover SERIAL NUMBER Pleae take the time to fill out and return the warranty card within 14 day after the date of purchae, o a to benefit from our extended warranty Or regiter online at www behringer com - DIGITAL INPUTS The RCA input i the digital tandard input for S/PDIF ignal The OPTICAL input (Tolink) i alo ued for S/PDIF ignal XLR input The digital XLR input i the tandard input connector for AES/EBU ignal It can alo be ued to feed in S/PDIF ignal, like the RCA and OPTICAL input which can be ued to proce AES/EBU ignal in addition to the S/PDIF format Fig 2 11: Analog output and input Fig 2 8: Wordclock connector The BNC connector WORDCLOCK i a high-impedance connector with no internal terminating impedance (75 Ohm) Ue it to connect equipment for external ynchronization of your ULTRAMATCH PRO Pleae note the intruction given in chapter ANALOG OUTPUTS Thee balanced analog XLR output (tereo) provide the analog ignal generated by converion from a digital format ANALOG INPUTS Ue thee balanced analog XLR input (tereo) to feed in analog line level ignal Pleae note the intruction on level adjutment given in chapter (ection ) 3 APPLICATIONS Your ULTRAMATCH PRO will oon prove to be a practical tool of valuable help in almot any ituation It traightforward uer interface i fun to work with Don t be miled by the plain deign: the SRC2496 i a really flexible tool in a variety of application Fig 2 9: Digital output The digital XLR output i the tandard output connector for AES/EBU ignal (AES/EBU LED light up) When S/PDIF i elected, the XLR output alo provide thi ignal Further information on thee connector can be found in chapter 5 3 Thi i the OPTICAL (Tolink) output connector of the ULTRAMATCH PRO When the unit i hipped, the optical Tolink input/output connector have dummy plug attached to protect them from dirt and to prevent the emiion of light Thee dummy plug can be removed eaily if you wih to ue the connector The digital tandard format for thi output i S/PDIF However, you can alo tranmit AES/EBU ignal via thi output RCA output The digital tandard format for thi output i alo S/PDIF If AES/EBU ha been elected in the output ection, thi output alo provide AES/EBU ignal Unlike the XLR connector, however, thi output allow for unbalanced ignal tranmiion You don t need to own a profeional recording tudio to benefit from the wide range of feature and function implemented in the SRC2496 Problem with the interfacing of optical and coaxial connector, removing copy protect bit, converting ampling rate from 48 to 44 1 or 32 khz all of thee tak are quite common daily routine even in a home recording environment Additionally, the ULTRAMATCH PRO i the logical choice a a high-end A/D and D/A converter or enhanced ource elector for digital input whenever you need an inexpenive and reliable alternative to equipment with coniderably higher price 3 1 A/D and D/A converion with the ULTRAMATCH PRO Converting analog to digital The ULTRAMATCH PRO i equipped with high-grade A/D and D/A converter With the SRC2496 you own an excellent tool for preparing your analog audio data for digital proceing or for converting analog ignal directly and toring them on a digital medium The analog input i et for tudio level (+4 dbu), but can be adapted to low-level ignal with the GAIN control Pleae ue the level meter to adapt the level of the input ignal, a decribed in chapter The illutration 3 1 and 3 2 below how you how to connect the unit Fig 2 10: Digital input 8 3 APPLICATIONS

9 ULTRAMATCH PRO SRC2496 Digital output Fig. 3.2: Example: A/D converion of tape recording Fig. 3.1: Example: A/D converion of a microphone ignal Fig. 3.1 how a typical etup for recording a ignal ource on a digital recording device (here: hard-dik recording ytem). If your HD recording ytem i equipped with a digital interface, you can ue the ULTRAMATCH PRO to circumvent the A/D converter on the ound card and thu avoid interference ignal generated by the computer. By taking the ignal from the ubgroup output on your mixing conole, you can record everal ignal ource at the ame time by aigning (routing) them to the correponding ubgroup. In practice, the ingeniou deign of the SRC2496 prove to be veratile to the point that you can alo olve problem which are not directly related to a normal tudio environment. For example, digital hi-fi recording equipment uch a MD recorder (Mini Dic) have been met with widepread popularity in home ytem. Unfortunately, however, uch equipment cannot record with 32 khz uing their digital input. Thu, it i impoible to record digital broadcating program directly to digital; D/A and A/D converion tep are inevitable. Not o with the ULTRAMATCH PRO, a it can convert the broadcat ignal from 32 khz to any other common ampling rate and alo remove any form of copy protect information. A econd wiring etup how how to copy tape recording for retoring and ubequent archiving purpoe on digital media. + Since ubgroup output on mixing conole, a well a tape and line output on hi-fi amplifier, uually provide unbalanced ignal only, pleae note the correponding intruction on how to connect the SRC2496 (chapter 5 INSTALLATION ) Converting digital to analog Uing the ULTRAMATCH PRO a a digital-to-analog converter i intereting for all application in which ignal mut be made audible again after digital proceing, e.g. to circumvent D/A converter of inferior quality in equipment with a digital output (ound card). Thi can be ueful if your ound card i not hielded from electromagnetic interference generated by power upplie or graphic card for example. You can feed the audio ignal from the digital interface of the ound card to one of the digital input on the SRC2496 and then take it from the analog output. The type of cable required for connecting the ound card to the ULTRAMATCH PRO depend on the output connector ued. + Detailed information on wiring etup can be found in chapter 5 INSTALLATION Parallel A/D and D/A converion The SRC2496 offer you the poibility to imultaneouly convert analog ignal into digital, and vice vera. In A/D and D/A converter mode, you can only convert from digital to analog if the CLOCK witch in the output ection ha been et to DIG IN. In thi cae, the ampling rate will be determined by the digital ignal applied. Otherwie, the ULTRAMATCH PRO can only be operated a an A/D converter, and the D/A converter function will be muted. In SRC mode the D/A converter i alway active. 3. APPLICATIONS 9

10 3 2 Sample rate converion No matter what type of digital audio ignal you feed into the ULTRAMATCH PRO, it will convert it to a common tandard format Numerou converion example can be found in daily tudio practice: Converion of 48 khz DAT recording to the CD tandard of 44 1 khz Converion of older digital recording from khz to 32, 44 1, 48, 88 2 or 96 khz Converion of foreign material with 32 khz to 44 1, 48, 88 2 or 96 khz Converion of audio data with a word length of 24 bit to 20 or 16 bit for recording on a digital medium Converion of S/PDIF format to AES/EBU for eay manipulation of variou parameter and improved (balanced) ignal tranmiion Setting or removing copy protect bit for further proceing of recording in a tudio environment Typical tudio application with DAT Only recently ha it become poible to ue le expenive DAT recorder for direct recording from analog ource with a ampling rate of 44 1 khz Mot conumer-level DAT recorder, however, record at 48 khz Uually, uch recording have to be tranferred via an analog connection from DAT to a profeional recorder Thi proce reult in an unneceary deterioration of the original quality of the material due to the additional D/A and A/D converter involved With the ULTRAMATCH PRO you can eliminate thi problem by converting the ampling rate purely in the digital domain, which allow for a coniderably higher quality than you could achieve with analog converter Further problem, uch a incorrect format, ignificantly deviating or untable ampling rate (a long a they do not deviate by more than ±12 5% from the current ampling rate), will alo be corrected by the ULTRAMATCH PRO in real time, thu enuring the ucceful tranfer of your audio data Hard-dik recording Hard-dik recording application alo require a uniform ampling rate, if poible the one ued by the ubequent playback medium (CD) A it can convert audio material from 32, 48, 88 2 or 96 khz to the tandard 44 1 khz, the ULTRAMATCH PRO make ure that all ource can be ued to feed audio material by way of a digital connection Of coure, the ULTRAMATCH PRO can be inerted at any point in the audio proceing path, i e alo between the PC and the DAT recorder Therefore, with uncritical audio material you can proce the material at 32 khz in the recording ytem (or higher, depending on which ampling rate can be proceed by the HD recording ytem), and ubequently convert the completely edited material while tranferring it to a DAT recorder at 44 1 khz (or even at 48 khz) Mater/lave problem olver When a digital mixing conole i ued, it i at thi point if not earlier that mater/lave problem will be encountered The explanation i imple: When uing CD player, DAT recorder and HD recording ytem in their normal application, the reponibilitie are clearly defined The playback device i the mater, the recording device i the lave, i e the CD player provide a clock rate of 44 1 khz to which the DAT recorder i ynchronized When uing a mixing conole, the CD player i the mater, the conole i the lave However, thi model collape all of a udden a oon a a DAT recorder i hooked up, which doe not record but play back too The conole can ynchronize to one ource only, the audio data from the other ource would be proceed incorrectly becaue the two device are not in ync The need for ynchronization in a digital tudio i done jutice connecting the equipment to one central ync ource For example, the conole could be the mater-upplying the remaining equipment with a reference ignal (wordclock) However, thi will only work if your other equipment ha a ync input, i e can be ued a a lave In a tudio with a digital tape machine, digital effect and hard-dik recording ytem it i impoible to connect commercially available CD player or DAT recorder to the mixing ection of the conole imply becaue they cannot be ynchronized By inerting the BEHRINGER ULTRAMATCH PRO SRC2496 between the equipment to be ynchronized and the mixing conole input, the SRC2496 can deliver the audio ignal with the tudio clock rate entered via the external ync input (WORDCLOCK, ) In thi cae, the ULTRAMATCH PRO work a intermediate gear of ort, whoe toothed tranmiion alway enure that there i an appropriate gap in the gearwheel It ynchronize the ignal coming from the device to be ynchronized, while converting to the deired ampling rate in compliance with the wordclock ignal In a tudio with a central clock generator, it i therefore poible to ue the ULTRAMATCH PRO to connect any unit to any other, regardle of any other option available + Even if the central clock doe not correpond exactly to one of the ampling rate, the ULTRAMATCH PRO will aign a correponding marker to the output ignal! Thi marker depend on the automatically detected and diplayed ampling rate, which i important becaue DAT recorder uually refue to enter record mode if an incorrect ampling rate ha been indicated Bridging unformatted paage DAT recorder, in particular, produce tiny format gap between individual recorded paage on the tape when intermittent recording are made Alo, when you tranfer older recording it can happen that hort paage with a different ampling rate than that of the current recording remain tored on tape In uch cae, the ULTRAMATCH PRO convert thi hot of ingle piece of information into a continuou data tream with a fixed ampling rate Even if the DAT recorder or any other digital ource i topped or witched off, the ULTRAMATCH PRO will continue to generate a continuou ignal (depending on the digital ignal, if ynchronized to it) 3 3 Removing copy protect information The original copy protect mechanim ued in DAT recorder wa imple but effective: It wa impoible to make digital recording from a CD Later, a tep-by-tep mechanim wa introduced with SCMS, which allowed at leat for one digital copy from CD The routine implemented in SCMS depend on the generation (x th copy) and the origin (category) of the digital audio material In profeional tudio engineering a copy protect mechanim doe not make any ene, which i why there i none defined in the AES/EBU tandard Since many tudio ue inexpenive conumer device for cot reaon, copy protect and/or format incompatibility problem (profeional/conumer) are encountered frequently The SRC2496 can ignore all type of copy protect information and generate a new, completely free marker that allow for multiple copying Thu, you can ue your ULTRAMATCH PRO to copy material from one conumer DAT to another Further information on thi ubject can be found in chapter 2 1 3, ection 3 4 Noie reduction with emphai A very pecial feature i the option to influence the et emphai bit Emphai here mean a noie reduction proce with a treble boot tep involved prior to recording Thi treble boot i undone during playback A pecific bit (emphai bit) in the digital data tream contain the information whether or not 10 3 APPLICATIONS

11 the ignal ha been proceed with thi technique It i however NOT a modification of the audio ignal, but only of the emphai marker contained in the digital data tream So much for the theory In practice, a lit EMPHASIS LED doe not necearily how that the emphai function ha really been applied In everal ituation the emphai bit wa et during the matering and editing proce due to defective hardware/ oftware without any treble boot applied Thi error uually remain undetected when the material i tranferred, becaue modern DAT recorder no longer have an emphai indicator for reaon of rationalization When the mater tape uually only monitored briefly on the DAT recorder due to lack of time arrive at the cutomer end, it give him a big urprie: The treble range ha been cut in the DAT recorder by more than 10 db, which cannot be undone and reult in a dull ound that lack brilliance in the treble range It i for thi reaon that we equipped the ULTRAMATCH PRO both with an emphai tatu LED and with an additional witch for manual correction of the emphai bit etting 3 5 Line booter, ignal refreher Longer cable length or the ue of a digital patchbay lead to deterioration of ignal quality, which may reult in a higher noie floor or even connection failure Uing pecial input circuitry your ULTRAMATCH PRO remove jitter, interference and level lo, thu retoring the ignal to perfect quality A a conequence, you can alo ue the SRC2496 to refreh the ignal over longer cable length or to retore attenuated and ditorted ignal 3 6 Correcting incorrect ample rate The ample rate of any equipment i ubject to fluctuation due to temperature and ageing effect Normally, an automatic locking circuit enure reliable operation even with varying or lightly fluctuating clock ignal If uch fluctuation exceed a certain level, however, the receiving equipment cannot be ynchronized any longer to the clock rate upplied and therefore fail to function properly Your ULTRAMATCH PRO i totally free from uch retriction, a it work over the entire bandwidth from 31 to 100 khz, rather than only within a mall range around the actual ampling rate The ignal output by the SRC2496 i alway ynchronized correctly to the value elected Thu, you can ue your ULTRAMATCH PRO to recue and work with ampling rate that have been modified deliberately (vari-pitch function on ampling keyboard or CD player) or fail to fall within the adjuted range due to rate fluctuation 3 7 Vari-peed application There are everal reaon for modifying the peed of a digital playback, e g to change the pitch or ynchronize the playback to other equipment In uch cae, the ULTRAMATCH PRO can track the ampling rate a it change and then output the ignal with a fixed rate of 44 1 khz (or any other electable or wordclockdefined value) Thu, it reliably remove ampling rate fluctuation, which could otherwie make it impoible to proce the digital audio material any further in the digital domain + At it digital input, the ULTRAMATCH PRO accept ampling rate fluctuation of up to ±12% from the adjuted ampling rate, without producing any ditortion at it output When thing get wore, the connection will not be interrupted, but temporary drop in the ignal quality (ditortion) may occur 3 8 Format converter Digital data tranfer i frequently affected by problem with the format required While ome device pecifically need S/PDIF ignal on the input ide, other can only output AES/EBU With the SRC2496 thi problem i now hitory The input of your ULTRAMATCH PRO readily accept any tandard ued today On the output ide, you can elect either AES/EBU or S/PDIF, o that it i jut a matter of one key pre to realize the ucceful tranfer of your audio material 3 9 Format interface Many CD player have no coaxial but only an optical output Some DAT recorder, on the other hand, only have a coaxial input Digital interface card for peronal computer are uually equipped either with optical or coaxial connector So, when you try to tranfer data from one unit to another you are likely to encounter incompatibility problem, in that one unit ha an optical connector, while the other ha a coaxial RCA connector Connection to profeional equipment i difficult becaue of the XLR connector ued there, or even impoible if it feature optical interface Such incompatibilitie between input and output are definitely a thing of the pat with the ULTRAMATCH PRO For example, if the CD player only ha an optical digital output, while the DAT recorder i equipped with a coaxial RCA input, your SRC2496 will eaily eliminate the reulting connection problem with it three input and output in all format Your ULTRAMATCH PRO allow for interconnecting virtually all equipment that i available on the market today! 3 10 Patchbay/plitter The digital output of your ULTRAMATCH PRO can all be operated at the ame time In thi cae, the input elector function a a kind of miniature patchbay determining which ignal i ent to the output It i not neceary to witch-over the output, becaue you can freely elect on the down-tream device which ignal to accept (example: recording active/inactive) Therefore, the output of the ULTRAMATCH PRO carry the identical ignal all the time and are operative imultaneouly The parallel operation of all three output enable you to ue your SRC2496 a a plitter, which i ueful for copying material to everal DAT recorder With ome pecial type of equipment in particular that doe not allow for looping through the digital data from the input to the output, thi ueful function make it poible to plit up the ignal 4 TECHNICAL BACKGROUND 4 1 A hort digreion into digital ample rate converion In the pat, the converion of variou ample rate into a fixed value neceitated a whole rack full of component and even then had ome diadvantage that could be meaured a increaed noie, ditortion or undeirable mirror frequencie (high-frequency chirping) On the other hand, the ampling rate converter chip intalled in the ULTRAMATCH PRO convert in real time and with 24-bit preciion It proceing i abolutely inaudible and can only be identified with tate-of-the-art, extremely expenive meauring intrument The functional principle i difficult to comprehend, even for profeional That i why we are preenting you with an equivalent model, which decribe the procee taking place in the proceor in an eaily undertandable manner The proceor carrie out an overampling at the input ignal Between each ample, more ample are inerted, thereby ignificantly increaing the number of ampling point by filling in the gap Subequently, the ignal pae through a variable low-pa filter, which enure that the correct limit, below which no problem with mirror frequencie (aliaing) occur, i oberved Then, the number of ampling point i ditributed in uch a way a to obtain the deired ampling rate at the output Thi enormou overampling allow the SRC proceor to achieve excellent preciion in the complete converion range Moreover, it alo imultaneouly eliminate any jitter preent in the input ignal 4 TECHNICAL BACKGROUND 11

12 There i no doubt that digital ignal proceing guarantee the lowet ditortion and noie value However, up until now ignal converion, pecifically ampling rate converion, had partially led to coniderable ditortion and interference: If you tried to ue traditional method, the incoming data quantity would far exceed any hardware capacity If data wa put into maller piece to avoid torage problem, the neceary turnaround time would prevent any practical application Therefore, programmer continue to experiment with the mot varied of algorithm, ending up, however, alway having to make a compromie between computation effort and ound quality By proceing data in real time, the proceor ued in the BEHRINGER ULTRAMATCH PRO can proce incredible amount of data The noie and interference floor i thu below -117 dbfs, and the ditortion value, even with difficult input ignal, are below -104 dbfs The ULTRAMATCH PRO remain practically inaudible a uch value are not normally achieved either by the A/D or the D/A converter, and certainly not by the CD a the final product 4 2 AES/EBU and S/PDIF tandard In principle there are two tandard, the mot important electrical characteritic of which can be een in tab 4 1 AES/EBU i the profeional, balanced connection via XLR connector Thi interface i baed on two identical protocol publihed in November 1985 (EBU Tech 3250-E) by the European Broadcat Union and in December 1985 by the Audio Engineering Society (AES3-1985) Sony and Philip oriented themelve to thi tandard and developed a further interface with unbalanced ignal routing and a few other major difference, predominantly related to the aignment of the channel tatu bit Thi interface, named after the two companie and known a S/PDIF (Sony/ Philip Digital Interface), ue either RCA connector or optical connection with optical fiber cable The procedure, tandardized in IEC 958, made a name for itelf mainly due to effort to introduce a copy protect technique Thi tandard alo decribe the revied AES/EBU interface, which wa adapted to the S/PDIF format and named IEC 958 I (profeional) The name of the S/PDIF interface i then IEC 958 II (conumer) Your ULTRAMATCH PRO ue the latet verion of each of the tandard, AES/EBU (AES3), IEC and EIAJ CP-1201 (Japanee tandard) AES/EBU IEC 958 II (S/PDIF) Connection XLR RCA/optical Mode Balanced Unbalanced Impedance 110 Ohm 75 Ohm Level 0,2 V to 5 Vpp 0,2 V to 0,5 V pp Clock accuracy Not pecified I: ± 50 ppm II: 0,1 % III: Variable pitch Jitter ± 20 n Not pecified Tab 4 1: Important data for AES and IEC 958 II pecification Table 4 2 illutrate part of the tructure of the profeional format, a it would normally be ued with AES/EBU connection Byte Bit P/C Audio Emphai Locked Sampl. freq. 1 Channel mode Ue of uer bit 2 Ue of AUX bit Sample length Reerved 3 Reerved for decription of multichannel recording 4 5 Audio ref. Reerved Reerved Table 4 3 preent the correponding conumer-format data, a normally ued with S/PDIF-connection Byte Bit P/C Audio Copy Emphai Mode 1 Category code Gen.t. 2 Source number Channel number 3 Sampling frequency Clock acc. Reerved Tab 4 3: Marker in conumer format IEC 958 II (S/PDIF) The firt bit already define whether the following bit are to be undertood a profeional or conumer-format bit A hown, the audio information can be found at the ame poition in the data tream, in principle making both format compatible There are, however, information block that differ in both norm If a piece of equipment, uch a a commercially available DAT recorder, ha only one S/PDIF input, the equipment will uually undertand that format only It will thu uually top when upplied with profeional-format data The reaon i imple: a hown in the illutration, proceing a profeionally-coded ignal with equipment that can only undertand conumer format can lead to malfunction relating to the copy protect bit and the emphai! However, thi point i not alway readily evident, a i the cae with plug-and-ocket connector (e g 1/4" TRS connector, mini-jack and pecial adapter for Sub-D intead of XLR connector) A lot of equipment ha no top function while other equipment can undertand both format depite having only one type of connector In all of thee cae uing the ULTRAMATCH PRO a the ultimate problem olver will oon pay off Virtually, all common digital ignal it receive at the input appear at the output with new, clean marker in the repective choen format 5 INSTALLATION 5 1 General connection note The ULTRAMATCH PRO digital input and output connection are hort-circuit-proof and tranformer-balanced Thi rule out any poibility of ground loop caued by additional ground connection, even when uing the RCA connector Furthermore, the completely potential-free concept of the digital connector allow for uing adapter in order to, e g route the RCA connector ignal to the XLR input of another piece of equipment Unlike digital connector, analog connector are not galvanically eparated, but have a balanced deign and are thu unproblematic in regard to ground loop 5 2 Analog input and output In order to give your audio ignal the bet poible protection from electromagnetic interference, the ULTRAMATCH PRO ha balanced XLR input and output A previouly decribed, the level at the analog input can be adjuted with the GAIN control The output operate at tudio level (+4 dbu) Pleae ee the following illutration for the pin aignment of the connector Of coure, it i alo poible to end ignal to the SRC2496 from unbalanced output (e g ound card or mixing conole output) in order to further proce them in digitized form Receiving analog ignal (e g when uing a high-end D/A converter between a CD-Player and amplifier) from the ULTRAMATCH PRO via unbalanced connector (e g hi-fi amplifier or tape recorder) i not a problem, too Tab 4 2: Marker in profeional format (AES/EBU) 12 5 INSTALLATION

13 + When uing the XLR connector in an unbalanced configuration, pin 1 and 3 on the connector inerted mut be interconnected! ULTRAMATCH PRO SRC2496 PRO RCA connector to the XLR input of another unit, depend on the enitivity of the XLR input in quetion The following figure illutrate the correct connection for unbalanced input and output connection via RCA plug Fig 5 1: Unbalanced tranmiion to the ULTRAMATCH PRO Fig 5 4: Connecting the ULTRAMATCH PRO in an unbalanced configuration Baically, it i the ame wiring cheme a i the norm for unbalanced audio connection in hi-fi ytem, e g between a CD player and amplifier For ditance le than 10 m, tandard coaxial line cable ha no negative influence However, hould greater ditance be involved, you hould ue XLR Fig 5 2: Unbalanced tranmiion from the ULTRAMATCH PRO 5 3 Digital input and output Balanced XLR connection The digital XLR input and output are not bound by the AES/EBU protocol They accept and deliver data tream in both the profeional and the conumer format Should the RCA input already be occupied by another device, it i even poible to connect the RCA output of, ay, a CD player to the ULTRAMATCH PRO XLR input by uing an adapter To do thi, you will need a cable uch a the one hown in fig 5 2, except that intead of a female XLR connector, a plug mut be mounted The following figure illutrate how to correctly connect the balanced input and output connector Baically, it i the ame wiring cheme normally ued for balanced audio connection uch a, for example, the connection between a microphone and a mixing conole Optical connection Tolink optical input and output are alo not bound by the S/PDIF format They accept and deliver data tream in both the profeional and the conumer format Optical connection are by nature not enitive to electric interference field, eay to cable and atonihingly robut The following figure illutrate how to correctly connect the optical input and output connection Fig 5 5: Connecting the ULTRAMATCH PRO optically via Tolink + For many conumer device the conumer format at the optical input i an abolute neceity, otherwie they do not accept the ignal + The ULTRAMATCH PRO doe not upport the ADAT multi-track format, which can thu neither be looped through nor converted (ADAT i a regitered trademark of the Alei Corporation) Fig 5 3: Connecting the ULTRAMATCH PRO in a balanced configuration Selecting the correct cable i not critical For ditance of le than 20 m, generally available microphone cable have no negative effect For greater ditance or higher requirement (mobile operation, powerful high-frequency field), however, you hould ue pecial 110-Ohm cable with double hielding Unbalanced coaxial RCA connection The RCA input and output, in turn, are not bound to the S/PDIF format They accept and deliver data tream in both the profeional and the conumer format It i even poible 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 uing an adapter Whether or not the revere will work, namely connecting the ULTRAMATCH Wordclock Feeding a wordclock ignal into the rear BNC connector enable external ynchronization of the ULTRAMATCH PRO Wordclock ignal are normally ditributed in a network configuration, i e are relayed and terminated with 75-Ohm coaxial cable, BNC-T adapter and terminating reitor Commercially available BNC cable are uually ued a connecting cable In order to offer maximum flexibility, the ULTRAMATCH PRO BNC input ha a high-impedance deign and i not equipped with an internal 75-Ohm terminating reitor Should the ULTRAMATCH PRO be the lat device in the ignal chain, however, it i neceary to put a T-connector into the BNC connector A 75-Ohm terminating reitor (in the form of a hort BNC plug) goe on one end of the T-connector and the BNC cable from the mater delivering the wordclock ignal on the other end 5 INSTALLATION 13