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Purcell Manual v2.3x

1. rranrrnnnnrrnnnnrrnnnnnnnnnne 21 USG MANS Hae 66 fuse replacing eegene 66 USE SA 62 Manual filename Purcell Manual v2 3x doc English version Manual for Software Issue 2 3x August 2005 G Groundin EE leh surtetovencns 62 guide to basic eetup 10 H hardware updates rrrrrrrrnnnnrrrrrnnnnnrornnnnnenrr 69 ADC BEE 26 Henry Purcell 1659 1695 rrrrnnrrnnnnnrnnnnners 4 i FEET ne 39 EEE 1394 EE basene 3 56 IEEE 1394 interface option 64 improvements from upsampling rrnrrrrreenrs 3 In Word menu 26 INACTIVE Message nsenneneeneesennrenernnnenenen 77 indicator 24 35 Indicator DUALT 36 indicator NDUT a a 36 MACAO LEE 35 indicator PW Penne et 35 indicator Status seie 35 IMOICATOR CH H EE 35 indicator WOLK cerminan a aa 36 MOUCHUNOM sissen a 34 Input button rEMOTE ee cceceeeeeeeeeeeeeees 42 INPUT WICC ALON EE 36 input Selection rrranrrnnnnrrnnnrnonnnnnnnnnnene 11 34 input selection automatic 56 input wordlength indicator sssseenesneaenn 26 input wordlength je 26 IND UT E 37 HPV ENO ses 37 HAP UIT OPE Auve 38 NPE RO Aar 37 INPUL WOrdCIOCK spaserte 38 ISSUES MEN aan 29 ISSUCs SONG Hae 29 J ME EE 38 75 Jitter low frequency rranrrrrnrrernnrrornanrnnnnnene 47 L learning remotes rrrnrrrnnnnrrrannennannennnnnnnnnnene 58 lock failure at 1 6Aori kGie eee 75 OSK UNG Lunde 47 LOCKING message 35 locking problemS
2. 1394 Source Identification 23 Out Word Output Wordlength 23 N Shape Noise Shaping 24 Dither 24 WCIk Wordclock 25 Out Mode Output Mode 25 Setting the Output Mode 25 Cloning Bit for Bit Mode 26 In Word Displaying the Input Wordlength 26 Disp Default Display 26 Bright x Display Brightness 27 De Emph Emphasis Processing 27 TimeOut Menu Time Out Setting 27 Ch Check Channel Check Test 27 Ph Check Phase Check Test 28 Burn In Burn In Signal Generation 29 Test Display Test 29 issue Software Issue State 29 Temp Unit Internal Temperature 30 Serial Unit Serial Number 30 Contact Contact information 30 CDUpdate Software Update By CD 30 Factory Restoring Factory Defaults 32 Manual filename Purcell Manual v2 3x doc English version Manual for Software Issue 2 3x email support dcsltd co uk web site www dcsltd co uk dCS Purcell User Manual dCs Ltd The Hardware Controls and Connectors Front Panel Purcell Technical Information General Technical Information Wordlength Reduction Using your dCS Purcell for the first time What s in the Box Safety Notice Mains Voltage Setting Key to Front Panel Power Button Input Button Sjette Output Button ele Status Indicator Remote Control Sensor Main Display Input Mode Indicator Function Button Select Rear Panel Key to Rear Panel AES EBU Digital Input SPDIF Digital Inputs SPDIF Optical Input Wordclock D
3. dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Spurious Free Dynamic Range DDC mode Better than 110dB in the frequency range 20Hz to 20kHz with Filter selected Table 8 shows typical SFDR test results for each DDC combination measured in dB in the frequency range 20Hz 20kHz with Filter selected OUTPUT SAMPLE RATE kS s 32 44 1 48 88 2 96 gt 150 119 132 gt 150 124 148 gt 150 INPUT SAMPLE RATE kS s 116 gt 150 Table 8 Typical SFDR for each Combination A typical example of the spectrum produced by upsampling is shown below 44 1kS s to 176 4kS s Conversion Purcell v1 25 O N A o Q S 6 Level dB0 O 120 140 x P i s pelaga UN iah r il pe ae a alu Ne i d I wy AA vgl Ak TN Ata T d LU d re aid j D d i 160 180 0 10 20 30 40 50 60 70 80 90 100 Frequency kHz Figure 12 Typical Spectrum for 44 1kS s to176 4kS s Conversion Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Sample Rate Combinations and Filter Options Clocking e AT indicates valid combinations with four filter choices e 1 indicates valid combinations with one filter e Blank combinations are not available as a single pass in this software release OUTPUT SAMP
4. Output Wordlength to 24 bits Noise Shaping to Auto Dither to Noise Shaped Triangular Output sample rate to DSD if adCS DAC is detected otherwise 96kS s Output mode to Dual if adCS DAC is detected otherwise Single Filters to Filter Clone to NonClone De Emphasis to Strip Word Clock to Off Display to Fs cO Brightness to Bright4 Timeout to Normal Other settings as you last used them Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Manual filename Purcell Manual v2 3x doc Page 33 email support dcsitd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 THE HARDWARE CONTROLS AND CONNECTORS Front Panel AES DUAL RCA WCLK dCS Purcell So ToS Reference Digital Upsampler BNC 1394 Key to Front Panel Power Button Input Button Figure 8 dCS Purcell Front Panel Power Standby button Input selector or button Output sample rate or Sie button Status indicator Remote Control sensor Main Display Input Mode indicator Function or Beefs button IQQTI1IMUNUW gt This button doubles as a power on off switch and a standby mode switch To switch on press the Power button briefly If power is available the PWR indicator will light and Purcell will run through the powe
5. 1 48 88 2 96 176 4 and 192kS s plus DSD IMPORTANT Before changing the sample rate ALWAYS check that your system is muted The performance of some DACs as the sample rate changes is unpredictable and they may produce a burst of high level noise as the sample rate changes This is unpleasant to hear and in extreme cases could damage your speakers IMPORTANT If you are using Purcell with a dCS Elgar Plus or Delius set the DACs Non Audio Mute Function to ON This mutes the outputs during sample rate changes The Output button doubles as the G y button used for paging forwards through the Function Menu see page 20 Status Indicator This consists of 4 indicators e PWR is lit when power is connected and the unit is turned on e STBY is lit when the unit has been placed in Standby mode e 24bit is lit if the Output Wordlength is set to 24 bits See Out Word on page 23 e NSis lit if Noise Shaping is not set to Off See N Shape on page 24 Remote Control Sensor Point the end of the Remote Control unit towards the sensor for best control range Main Display The main display tells you what Purcell is doing e When not locked to a digital source the display shows No Input e During normal operation the display will show either the Input Sample Rate In Fs Output Sample Rate Out Fs or both In Out depending on the setting of the Display menu option see page 26 e While locking to a source the display shows in se
6. 41 BING IN e EG 37 BIN ail RE 27 Burn N MENU EE 29 PUMPES aa 76 DUE TOLE aat 29 button Display remote 42 button Filter remote rrnrnnnnnnnnnnvnnnnnnnnvnnnnne 42 button Funchon 36 button Function remote eee 42 DURON leie 34 button Input remote rronrrrrrnnnrrrrrnnnrvnnnnnre 42 button Menu Geet 21 36 button Menu Step rrrrrnnrrrnnnnnoonnnnnnnn 21 35 button Menu Step Back 21 35 DUTTON QUIDUT EE 35 DUTION POW EE 34 button Purcell remote arrarnnrnnnnnnnnnnnnnnnnnnne 41 button Standby remote ccccseeeeeeeeeees 42 buttons up down remote nannnnnanneneeaannnni 42 Manual filename Purcell Manual v2 3x doc English version Manual for Software Issue 2 3x August 2005 C cable identification cccccscsececceeeseeeeeeeeees 82 elei 10 37 38 39 73 74 75 cannot change wordlength 23 cannot record from SPDIF output 39 cannot set cloning ccccccseeseeeeeeeeeeeneeeees 26 Cannot set de emphaeis 27 EENHEETEN dech 24 76 Cannot set filter 22 cannot set noise shaping rrrrnrrrnnnnnen 24 76 cannot set out mode 25 cannot set wordlength 76 Caution message 29 CD player problems rannrrrrrrrnnnrnvrnvrnnnnnrenn 73 CD Update IS Imtierrupied 32 CD Update men 30 CD upsampling rrnnnnnnrrnnnnnrnnvnnnvrnnnnnnnnvennnn 3 Ch Check menu 27 changing Options noenneoennnenenneneeneenennnne 64 channel check Ta
7. 50 dither NS mangular 50 dither recommended settings rrnnrrrvennnnnn 23 dither top CH EE 50 dither Irangular iae 50 do not use RCA or BNC outputs 26 do not use with Dual AE 39 Odownsamplmg 23 80 PSP 3 39 45 56 81 PSP mod a EE 80 DSD output MOE rrnrrrerrrnnnrnrvvrrnnnrnvnnnnnnsnre 11 DSD output Conpechmg 14 KREE ue DEE 16 DSP Err1 message EE 72 DSPs Not Loaded message 72 HIR GET 25 38 45 74 75 Dual AES output mode rrrnrrrrnrrnnnrnvrnrnnnnnnre 11 Dual AES outputs Conpechmg 13 Dual AES do not use wb 39 MIER SCUING EE 11 DUA En Le WEE 17 18 DUAL NACA vassere 36 DVD sample rates arrrnnnnrrnnnnronnnnrnnnnnrnnnnnr 75 DVD WDSAM PNG 3 dynamic FANGE Leed 46 E SR Lo EE EN SE EE 62 emphasis Lee 27 51 F factory default setimge 32 Factory un 32 fails to lock to outputs cccceeeeeeeeeeeeee ees 74 fault INGIC ATION EE 72 MT 22 42 47 Filter button remote 1 2 00 cece eee eeeceeceeceeeeeeees 42 filter interpolation rrrnnnnrrnnnnornnnnennnnnnnnnnene 3 UE MUIMDEN EE 47 MSIS USE ele 62 Found Track message 31 FPGAs Not Loaded message 72 frequency response 45 front Ganel ccc ceeeeeeceeseeeceeeeeesseeseesseaeeeeees 34 Fs message 25 TUM SS CAC E 81 Function button 36 Function button remote 42 Function Menu 21 Function Menu closmmg 21 Function Menu opening rrrnnrrenvnnnnvvvnnnnnen 21 Function Menu USING
8. Control you can use this to access the menu the Function button opens the Menu and doubles as the Seta button the T button pages forward through the Menu the a button the 4 button pages backward through the Menu the SEI button to control an Upsampler instead of a DAC first press the Purcell button to turn the blue LED on When you first open the Function Menu the display will show Menu Successive presses of the Sf button page through the Menu You cannot go directly to any particular page but must enter at the top of the Menu and then page through until you reach the page you want There are three types of page in the Menu Parameter Pages Information Pages and Test Pages Parameter pages allow the user to check and also change the current settings of the operating parameters for example Filter When a parameter page is displayed the first press of the button shows the current setting Subsequent presses of the BE button change the page setting Information pages display information about the unit for example Software issue When an information page is displayed pressing the Select button displays the information held on that page Test pages allow the user to initiate a number of useful routines for example Channel Check When a Test page is displayed pressing the Select button starts the test routine There are two ways to close the menu and return to normal operation The easiest way is to wait 5 seconds for
9. F weighting curve lt does not affect signal frequency or transient response but shapes the frequency response of errors Q noise or truncation errors so that they fall as much as possible in the less sensitive part of the spectrum for sample rates of 88 2kS s and above this will mainly be in the ultrasonic region The architecture used also shapes dither where this is added For all the major sample rates 32KS s 44 1kS s 48kS s 88 2kS s and 96kS s the noise shapers have been individually optimised The 1 3 and 9 shapes for 44 1 kS s agree well with Wannamaker s published results Noise Shaping adds more noise power but because of the shaping it is perceived as lower noise There is a compromise to be drawn as more aggressive shaping is used more noise is added and less perceived improvement occurs In practice things stop improving by about the 9 order The gentle shaping tends to follow the E weighting curve by chance For more information on this topic either see the Wordlength Reduction section on page 52 or read the references below If the Out Word menu page is set to less than 24 bits the sound quality will be poor unless you apply enough Noise Shaping and or Dither It actually uses an Error Shaping architecture but the name is now being used for entirely other things and is less well known so we call it erroneously Noise Shaping Minimally Audible Noise Shaping S P Lipshitz and R A Wa
10. Menu see page 20 With the blue LED on use the T and J buttons K to page through the menu and press Function again to change a setting Note that the menu may time out if there is no activity for 5 seconds Input Selector buttons This group of buttons y select the active digital audio input With the blue LED on press AES1 or AES2 to select the AES input press RCA1 or RCA2 to select the RCA input or press the BNC button to select the BNC input The Input button steps through all the available inputs in sequence giving access to the others Filter button With the blue LED on and the unit locked press the Filter button n to select one of 4 interpolation filter settings In this release 4 sample rate in out combinations have optional filters These give a different trade off between aliassing performance and phase response This feature is duplicated in the menu see Filter on page 22 Display button L With the blue LED on repeatedly pressing the Display button reduces the display brightness in steps from Bright 7 to Bright O This feature is duplicated in the Menu see Bright on page 27 Up Down CT J buttons With the blue LED on press one of these buttons x to change the output sample rate This duplicates the Output button on the front panel see page 35 When the Menu is open use these buttons to scroll along the Menu In Purcell mode the Vol Bal Mute and Phase buttons have no effect Manual fi
11. ON OUTPUTS cccccseeeeeceeeeeeseeeeeeeseees 74 noise performance ssessessereeserreeserersrnrnen 24 noise shaping 24 35 49 52 53 55 75 noise shaping recommended settings 23 noise OuUu nlsaton 52 Non Seq message 32 MOM AU GIO EE 51 NON AUCIO TAGs EE 51 Weide e UE 26 NS MAGICAL EE 35 O opening the Function Men 21 operating conditions rrrnnnnrnrnnnrrevnnnrrrennnnnr 48 optical mput nnee 38 option IEEE 1394 mtertace 64 Option remote Confrol 64 ODTONS EE 64 options changing WEE 64 Out Mode men 25 Out dere Rn EE 23 OUTPUT BUON EE 35 output mode aiaa 25 38 Manual filename Purcell Manual v2 3x doc English version Manual for Software Issue 2 3x August 2005 output mode setting rrrrrrrnnnrrvrvrrnnnnnvenn 11 output wordlength rrrrrnnnrrnrnnnnronnnnnnennnnnre 23 output AES 1 resarnrnnnnrnnnnnrnnnnnronnrnvnnannnnnenennn 38 OUIPUL AES 2 anna 38 output RCA rrernorronnnnronnnrernnnnennnnnennnnrennnnennnn 38 output wordclock esannnnnannnoennnnennnnennnennnnne 38 OUTPUTS CONNECTING fo 12 P ACK AG ING NE RE doe eaniantateneota 66 packaging replacement 62 performance NOISE rrrrannrrnnnrrvnnnrnnnnnrnnnnnene 24 Dh Check menu 28 phase check fails AA 76 phase check routine nssneennenenneeenneesennne 28 phase locked Ioop 47 Please check source slaved to DAC Wordclock Out message from DAC 77 Please Start CD mes
12. Rate is 88 2 or 96kS s check that your DAC is capable of double speed operation If you have set Out Mode to Single connect the required single wire output on the Purcell rear panel to the matching inputs on the DAC using suitable cables Signals are available from any of the AES 1 AES 2 RCA or BNC outputs simultaneously Hand Crafted by The Red Hot CD Player Co 16 bits i 44 1kS s WORDCLOCK DIGITAL OUTPUTS EEN EES P ANALOGUE OUTPUTS Balanced or Unbalanced Outputs Outputs To Power Amplifier or Preamplifier Figure 1 Upsampling to 24 96 single wire Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Connecting the Dual AES Outputs Check that your DAC is capable of Dual AES operation If you have set Out Mode to Dual AES connect the AES 1 output on the Purcell rear panel to the AES 1 or AES A input on the DAC and the AES 2 output to the AES 2 or AES B input using two XLR cables Ensure the cables are not swapped L Hand Crafted by deih The Red Hot CD Player Co Oo 16 bits 44 1kS s l dCS Purcell Upsampler DIGITAL OUTPUTS OPTION POWER Keel 52 RCA WI suc i D Q Q m HR BNC H LI U 192kS s dCS Delius DAC LI R E Balanced or _Unbalanced Outputs Outputs To Power Amplifier or Preamplifier Figure 2 U
13. The PWR 24bit NS and one of the input indicators will be lit Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Step 1 Selecting a Digital Input Switch on the source equipment If appropriate load a disk tape and set the machine in PLAY mode to ensure it is generating a digital audio data stream Connecting to a Single AES or SPDIF source Most source equipment such as CD transports DVD players is fitted with a single wire digital output usually on an RCA phono connector Connect your source equipment to the matching input on the Purcell rear panel using a Suitable cable Press the Input button repeatedly until your chosen input is displayed on the input indicator to the right of the display This will be either AES RCA TOS or BNC The unit will lock to the source displaying in sequence Locking d xxx the sample rate then the default display probably 44 1 44 1 depending on the Disp menu setting and the source format Step 2 Setting the Output Sample Rate Choose one of the following sections Sample Rate Conversion To change the Output Sample Rate press the Output button repeatedly to cycle through the available conversions Choose a sample rate to match your DAC usually the highest sample rate your DAC will handle DSD is available on units fitted with
14. Typical SFDR for each Combination ernrnnnrrvvvrnrnnnvrrvnnnnnnrrrernnnnnenn 46 Table 9 Valid In Out Combinations and Number of Filter Options Available 47 Table 10 Power consumption for consumer Droduch 48 Table 11 Size and weight for consumer Products rrrrnrrrnnnnnrnrnnnrnnnnnnnnnnnnnnnn 48 Table 12 Noise Added by Dither Tvpes 50 Table 13 Dither and Noise Shaping Noise Power 53 Table 14 Options available ccccccccceeeececccceeeeeeseeeeeeeeeeeessueeeeeeeeeeeessaaaaeees 64 Table 15 dCS Contact Information nnnnn0aannneneaannnnneannnnrnnnnennrnnenenrnnennnennnne 79 Table 16 Cable colours and Styles rrrrrrrnnnnnrrrrrnnnnnrrnrnnnnnnrnnrnnnnnrrnnnnnnnnennn 82 List of Figures Figure 1 Upsampling to 24 96 single wire 12 Figure 2 Upsampling to 24 192 Dual AE 13 Figure 3 Upsampling to DSD using an IEEE 1394 interface 000000nneeennn 14 Figure 4 Using Elgar Plus in Master Mode with a 1394 Purcell and Verdi 16 Figure 5 Using Elgar Plus in Master Mode with a standard Purcell and Verdi 17 Figure 6 Upsampling to Dual AE 18 Figure 7 Menu flow chat 20 Figure 8 dCS Purcell Front Panel 34 Figure 9 dCS Purcell Rear Panel rrnnnnrnnnnnnnnnnnnrnnnnnnnvnnnnnnvnnnnnnrnnnnnnsennnnnnvnnnnn 37 Figure 10 The Remote Control 41 Figure 11 Filter 1 Response Curves for Conversions from A4 1k is 45 Figure 12 Typical Spectrum for
15. does not work 76 The Display turns on briefly when a control is operated then turns off 76 Troubleshooting the IEEE 1394 Interface 77 Upsampler or Transport displays Inactive 77 The Unit keeps displaying No Comms 77 The Unit keeps displaying Search 77 The DAC displays Verdi Wordclock Missing 77 The DAC displays Missing Wordclock between Clk Out amp Verdi Clk In 77 The DAC displays Please check source slaved to DAC Wordclock Out 77 The DAC displays Wrong Wordclock Verdi Clk In 77 The DAC remains muted 78 The DAC takes a long time to unmute 78 TY OU NGS More Help EE 79 Other Information 79 Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCS Ltd August 2005 Indexes and Software Version Numbers anrernnnnennnnnnnnnnnnnnnnnnnnnnnnnnnennnnnennne 80 Software History 80 Definitions and Abbreviations 81 Key to Cable Identification 82 List of Tables 83 List of Figures 83 Keywords and Phrases 84 About this Manual If you have not used a Purcell before please read the section Using your dCS Purcell for the first time on page 62 This manual has been arranged with the most commonly used sections placed first table of contents page 6 step by step page 10 and applications guides page 16 detailed software and hardware information page 20 techni
16. noise shaping and from truncation Noise Shaped effects with all Triangular dither inputs 16 bit truncation with 9 23 4 dB 17 9 dB Okay with input order noise shaping and noise floors down no dither to 120 dB 16 bit truncation with 9 28 2 dB 16 7 dB Unconditionally free order noise shaping and from truncation Noise Shaped effects with all Triangular dither inputs Table 13 Dither and Noise Shaping Noise Powers 19 DSD carries this further The principle is the same but with DSD there is more noise than there is signal even at full scale It is just that it is in a part of the spectrum the ear cannot hear 14 16 bit Q noise is 98 10dB relative to a full scale sine wave Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Noise shaping on its own is not perfect It relies on a small amount of noise in the input signal to generate the frequency shaped correction signal and if there is very low noise in the input signal this mechanism can break down In reality such a situation can only occur with test signals digitally generated signals or silences introduced in editing If one of these situations may arise any chance of a problem can be completely removed by adding a dither signal as well as using noise shaping The noise shaping shapes the dither in the dCS Purcell arc
17. not to need regular maintenance and contain no user serviceable parts apart from the mains fuse If you experience problems with your Purcell you should check the Troubleshooting section on page 72 You may be able to resolve the situation yourself for example by changing a menu setting If this does not resolve the problem contact your authorised dCS dealer for advice quoting the model the full serial number see Serial on page 30 the software version number see Issue on page 29 and giving a detailed description of the fault If further action is necessary your dealer will advise you fully There is a mains fuse below the power inlet accessible from the outside of the unit If the fuse blows it may be changed by the user The current consumption of the unit is very low so it only blows if power surges occur or there is a fault in the unit Usually power surges cause no other damage but if the fuse blows repeatedly on replacement some other damage will have been done and the unit must be returned to dCS for repair Fuse Type 20 x 5mm 0 5 amp T HRC fuse If the fuse should fail it is essential that it be replaced with one of the same type and rating Failure to do so could result in damage to the unit risk of fire or electric shock and will invalidate the guarantee Replacing a Blown Fuse IMPORTANT Referring to Figure 15 remove the power cable use a small flat bladed screwdriver to pry up the tab on the fus
18. run the Factory routine Use the Input button to select AES 1 AND AES 2 inputs Open the menu again choose a Filter if you wish Use the Volume control to set a comfortable listening level Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Manual filename Purcell Manual v2 3x doc Page 19 email support dcsitd co uk English version web site www dcsltd co uk dCS Purcell User Manual dCs Ltd THE SOFTWARE THE MENU Press Function Step gt to move along the Menu press lt Function Step to move back Press Function Select to set a menu option or change options Menu TS Filterx Transmit P Turns off 1394 data feed DSD mode only First page of the Selects an optional Menu filter if available Filter 1 Filter 2 GE Clone Displays the Allows bit for bit Sets the default number of active operation if Fs In display bits in the input Fs Out e g for needs music HDCD Brightx f De Emph Sale ina dich Processes the Sets the Function ES Emphasis flags in Menu time out brightness the incoming data delay Bright 7 eee ii Bright 0 CDUpdate Restores standard Displays dCS email He address CD factory settings Closes the Function Menu Figure 7 Menu flow chart Manual filename Purcell Manual v2 3x doc English version source
19. the unit to time out and revert to the standard display Alternatively use er button to page forward until the display shows End and then press the Sf button once If the unit times out before the operation in hand has been completed simply re enter the menu page forward or backward and continue where you left off If you find the 5 second time out difficult to use you can extend it to 30 seconds by changing the TimeOut setting to Long Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd Menu Sequence August 2005 Use the flow chart page 20 or the Control Summary sheet to guide you through the Menu more quickly The following explanation deals with the Function Menu pages in the sequence they occur in the Menu The use of each page is shown on an individual basis with the last operation being closing the Menu After you have become more familiar with the Menu you will find it more convenient to perform all the Function Menu operations in one go before finally closing the Menu Filter Interpolation Filter Setting The Filter page is only available when Purcell is set to one of the following conversions 44 196 4844 1 9644 1 or 96 48kS s When other conversions are set this page will not appear in the Menu Assume for the purpose of this illustration that the Filter is currently se
20. to settle again Use the Input button to select the Dual AES input AES1 AES2 and wait for the unit to settle Set the MS menu page to MS Mastr and wait for the unit to settle again Use the Input button to select either the 1394 input for SACD or the Dual AES input for upsampled CD Use the Volume control to set a comfortable listening level Open the menu again and choose a different Filter if you wish Verdi v1 2x with Elgar Plus v4 2x will automatically select the active input Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Upsampling to Dual AES DAC in Slave Mode You can upsample the digital output from any CD player DAT recorder or DVD player to 24 bit 192kS s Dual AES L e Hand Crafted by K A The Red Hot CD Player Co e RCA phono cable dCS Purcell Upsampler DIGITAL INPUTS AES Or jp RCA phono A XLR cables cables L R R A Balanced or Unbalanced Outputs Outputs To Power Amplifier or Preamplifier Figure 6 Upsampling to Dual AES Connect up as shown in Figure 6 Purcell setup You can connect any of Purcell s digital inputs to the CD player use Purcell s Input button to select it Open the menu and run the Factory routine Use the Output button to set the 44 1 5192 conversion Elgar plus setup Open the menu and
21. unit locks and returns to the default display normal operation will be resumed e The Remote Control will operate Purcell only while the blue LED on the handset is lit See page 41 Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual dCs Ltd Manual for Software Issue 2 3x August 2005 Output audio quality is poor Check that Output Wordlength is set correctly for the destination device Outputting a longer wordlength than the destination device can accept will produce a grainy sound that is particularly unpleasant at low signal levels If Out Word is not set to 24 bits use Noise Shaping try setting it to Auto and or Dither This can be caused by a very jittery source The DAC connected to the AES or SPDIF outputs reports an error Check that the DAC can receive the sample rate that Purcell is outputting in the appropriate 1 wire 2 wire format When playing a DVD a short burst of noise is heard and the sample rates change We have found that some DVDs have been compiled with tracks recorded at different sample rates e g 96kS s amp 48kS s There is no warning of this sudden change in sample rate this could be done by using the Non Audio flag or by changing the sample rate code in the data stream so the DAC tries to decode corrupted data momentarily before registering loss of sync muting and re locking The root cause of the proble
22. version 3 46 indicates a minor update for internal dCS use to make testing easier or more thorough or to cater for some minor hardware change Do not update your unit e A change to version 3 50 is a more serious update offering extra functionality If you want to use the extra features update your unit The manual will be updated for this check the web site e Achange to version 4 00 is a major update It will require updated hardware and the manual will be updated If you have older hardware some of the features added by new software may not be available due to for example a missing connector For recent hardware this is mentioned in the Upgrader s notes in this manual If you need the missing feature contact your dealer or dCS to arrange a hardware update e f the software currently loaded includes a CD Update page you can update the software yourself Contact dCS for a CD and follow the instructions in the CD Update section on page 30 or the instructions supplied with the CD The update program will check your hardware configuration and install the latest software compatible with it e f you do not have the CD Update feature loaded or have difficulty with it a dCS distributor can download files from a PC into any unit fitted with a SUC connector Contact your dealer for details e For older units without a SUC connector your distributor can install new firmware in your unit Firmware updates are low cost from dCS Con
23. well The noise added by the dither settings is summarised below Sample Rate kS s Noise Added Noise Perceived Power Power Noise Added 0 Fs 2 unweighted F weighted No dither straight truncation 0 dB Top Hat dither 3 dB Triangular dither 4 8 dB Noise Shaped Triangular dither 4 8 dB Table 12 Noise Added by Dither Types If Dither is used with Noise Shaping it is shaped made less audible by noise shaping This applies as much to noise shaped triangular as the others IMPORTANT If the Out Word menu page is set to less than 24 bits the sound quality will be poor unless you apply enough Noise Shaping and or Dither Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Message Handling AES3 and SPDIF data streams contain message flags which can be used to automatically set up digital audio equipment AES outputs The AES messaging scheme used in all dCS products is based on the AES3 standard expanded to deal with sample rates over 48kS s and multi wire interfaces Purcell implements the messaging as follows e Professional e Non Audio flag Off e Emphasis flag is determined by the input and the De Emphasis menu setting e Sample rates up to 192kS s are coded e Multi wire format is coded e Wordlength is coded SPDIF outputs The SPDIF messaging is based on t
24. your DAC is locked to either 88 2 or 96kS s in Dual AES mode check that the Purcell output sample rate is not set to either 44 1 or 48kS s If this is the case set the Output sample rate to 88 2 or 96kS s as appropriate and the Output Mode to Dual AES Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Channel Check Phase Check and Burn In do not work e Check that the unit is locked to a digital signal e These features are not available in DSD mode Cannot Set Wordlength Dither or Noise Shaping e Check that the unit is not set to 176 4 kS s or 192 kS s output sample rates For these rates Output Wordlength Dither and Noise Shaping cannot be set the unit is automatically set to 24 bits no Dither or Noise Shaping e These features are not available in DSD mode Menu Timeout does not work e Someone has turned the menu timeout off using remote software running on aPC Open the Menu and run the Factory routine to reset everything to ex factory settings The Display turns on briefly when a control is operated then turns off e This happens when the Display Brightness is set to Bright O Access the Menu and change Display Brightness to a different setting Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Man
25. 100 115 120 200 215 220 or 230 240V 10 50 60Hz AC operation Typical power Maximum power consumption consumption Purcell amp Verona Delius Elgar Plus Verdi amp La Scala Table 10 Power consumption for consumer products Size and Weight Purcell amp 461mm 413mm 69mm 8 5kg Verona 18 15 16 18 2 70 18 7Ibs or 461mm 413mm 69mm 8 8kg elius 18 15 16 18 2 70 19 4lbs ATT 461mm 406mm 75mm 12 0kg gar Plus 18 15 16 0 2 94 26 4lbs Verdi amp 461mm 415mm 137mm 17kg La Scala 18 15 16 34 5 39 37 4lbs Table 11 Size and weight for consumer products e Delius only the control Knob protrudes out of the front by 20mm 0 79 e Verdi amp La Scala only the control knob protrudes out of the front by 13mm 0 51 e Allow extra depth for cable connectors Operating Conditions e Ambient temperature range 0 C 32 F to 50 C 122 F non condensing e Do not install the unit near heat sources such as radiators air ducts power amplifiers or direct strong sunlight e If in doubt the easy test is Purcell is happy to work anywhere a human is Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd Noise Shaping IMPORTANT August 2005 The dCS Purcell uses noise shaping that is optimised to the
26. 20 or later e dCS Verdi La Scala Upsampling SACD CD Transport standard fit with the Easy Play menu set to Verdi The system relies on a 1394 link between Verdi and the DAC The DAC will automatically change inputs whenever Verdi changes layer or starts playing If the Verdi starts playing an SACD the DAC selects that 1394 channel Manual filename Purcell Manual v2 3x doc email support dcslid co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 If the Verdi starts playing a CD and e there is a second source on the 1394 bus such as a Purcell the DAC will select the other source e there are more than two other sources on the 1394 bus such as a Purcell or another Verdi the DAC will select one of the other sources You may have to manually select the source you want e Verdi is the only source on the 1394 bus the DAC will scan the PCM inputs and select the first active one it finds The priority order is AES1 and Dual AES first AES2 RCA1 RCA2 TOS ST BNC If the active input is not derived from Verdi you may have to manually select the source you want If none of the PCM inputs are active the DAC will remain selected to the original 1394 channel This arrangement works best with only two inputs connected to the DAC Verdis 1394 feed for SACD s and either a PCM feed from Verdi or an upsampled feed from Verdi The DAC can be in mas
27. 44 1kS s to176 4kS s Conversion 46 Figure 13 Noise Shaping and Dither Goecha 55 Figure 14 Truncation Only Gpechra 55 Figure 15 Changing the Mains use 66 Figure 16 Removing the Remote Control battery Cover 67 Figure 17 Changing the Remote Control unit batteries rrrrrrrnnrrrvvrrnnnvrveen 67 Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual dCs Ltd Keywords and Phrases 1 1394 ID Menu a 23 80 1394 interface EE 39 56 1394 interface option 64 1394 interface deabimg eens 22 1394 interface gvnchrontsimg 56 1394 interface troubleshooting 200 77 1394 output connecting cece eeeeeee eens 14 1394 source identification 23 2 E VE 3 2A Cuan 3 E Te ue iere EE 35 A Se gt EE 26 Active message rrrrrnnnnnrnnnnrrnrnnnrennnnnnrnnnnnsnen 77 DIE 81 AES 1 outpout cece cece ceceeeeeeeeeeeeaeees 38 51 AES 2 output sorrrnnnnrannnnrnnnnnrnnnrnnnnnnsnnnn 38 51 AE OS WAP UU eege eege 37 AES input selecting rrrrrrnrnnnnrnvnnnnrrnnnnnnnen 11 AES messaging WE 51 PE SEB E ME 37 A EE 81 automatic input selechon 56 B Bad CD message ua 32 Bad Checksum message 32 72 batteries for remote Control 67 batteries polarity rrrrrrrrnrrnnrrrrrrrnnnnnvennnnnn 67 DIO Dilana 26 blank display cccccceeeeceeeceeeeeeeeeeaeeeeeees 27 76 DIGS LED Kem Ole EEN
28. 94 interface Verdi can read DSD data from an SACD and output a stereo pair of DSD data onto its 1394 interface The data is encrypted to conform to the conditions of the DSD licensing arrangements Either Elgar Plus or Delius will accept DSD data from the 1394 interface and convert it to high quality analogue The hardware interface is very flexible and software configurable We will add other features and data formats at a later date adopting industry standard formats as they stabilise Synchronising IEEE 1394 interfaces The IEEE 1394 system is great for carrying large amounts or digital audio data but is inherently very jittery To ensure low jitter conversion to analogue each unit linked by the 1394 system must be synchronised to the others by another connection e A DAC in slave mode should be sync ed to Verdi by connecting Verdi s WClk Out to the DAC s WCIk In e A DAC in master mode should sync Verdi by connecting the DAC s WCIk Out to Verdi s WCIk In e An Upsampler should be slaved to Verdi usually by the selected PCM input AES or RCA Automatic Input Selection From October 2002 onwards the software on the following products has been enhanced to automatically select the interface carrying data from Verdi e dCS Elgar Plus DAC standard fit with software version 4 20 or later e dCS Delius DAC optional fit with software version 2 20 or later e dCS Verdi SACD CD Transport standard fit with software version 1
29. D mode Set up your system to play music at a comfortable level Open the Menu and step through until the display shows Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Ch Check Press the EIDEN button once to start the test After briefly displaying Wait the following sequence occurs Left A modulated tone should appear on the left channel only for several seconds Both outputs are muted for a second A modulated tone should appear on the right channel only for several seconds This is displayed briefly at the end of the test If the channels are swapped check for wiring errors from the unit output onwards If you correct this temporarily using the Swap function on a dCS DAC note that the Swap setting is NOT remembered at power down Ph Check Phase Check Test Use this feature to check if one channel in your system is phase inverted It is disabled when in DSD SACD mode Set up your system to play music at a comfortable level Open the Menu and step through until the display shows Ph Check Press the EAN button once to start the test After briefly displaying Wait the following sequence occurs In phase noise appears on both channels for several seconds Both outputs are muted for a second A second burst of noise appears on both channels with the right c
30. LE RATE kS s 32 44 1 48 88 2 96 176 4 192 CA NO a o lt lt oc Ww a lt o gt A zZ O O Table 9 Valid In Out Combinations and Number of Filter Options Available The sample clock quality significantly determines the output performance of the converter The highest quality clocks that are available are crystals so we use these Purcell uses two on board voltage controlled crystal oscillators VCXO s as clock sources one for the 44 1kS s related outputs and one for the 48kS s related outputs Only one VCXO is active at a time In slave mode the active VCXO is synchronised to the clock signal extracted from the input by a phase locked loop PLL This PLL is of a special narrow bandwidth type that provides a significant degree of clock cleaning The PLL is also very robust and will lock to very poor signals if necessary Data is decoded using a much wider band faster PLL so AES3 type low frequency jitter on the input clock can be handled and will be cleaned Synchronising to source 6 Pull in range 300 ppm about nominal frequency Lock in time lt 6 seconds for most situations Available on models fitted with the IEEE 1394 interface only Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsitd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Power requirements Units may be set for
31. Off Power Off Filter 1 Filter 2 Filter 3 Filter 4 Filter 5 Filter 6 Master Slave email support dcsltd co uk web site www dcsitd co uk dCS Purcell User Manual dCs Ltd Transports Manual for Software Issue 2 3x For Verdi amp La Scala the category code is 20 decimal August 2005 These Transport codes are in use on the Transport Remote v2 0 Button Code Decimal OD JO Om SS WN CH aoe ot om A CH Hi OO OO OO OO Om OO OO P A Co Co Ca GO GO DNDN PD O OO OO OI PS Go OO GO zk ON OI PS Go h O O NO OT OD N 17 Hexadecimal 00 01 02 03 04 05 06 07 08 09 OA 0B OG OF 19 1A 1D 20 21 22 23 24 29 2B 32 35 36 37 3A 3B 3C 3D 3E Verdi RC button Keypad 0 10 Keypad 1 Keypad 2 Keypad 3 Keypad 4 Keypad 5 Keypad 6 Keypad 7 Keypad 8 Keypad 9 Standby ON Standby OFF Standby toggle Display Stop Rewind Stop Fast Forward Repeat Next Track Previous Track Next Index Previous Index Play Mode Program Fast Forward Rewind Play Stop Eject Power OFF Clear A B SACD CD select CD layer Select SACD layer for no apparent reason so we changed the code to 55 decimal Manual filename Purcell Manual v2 3x doc English version The Power Off code was 63 decimal in Verdi v1 20 1 25 Some Pronto units were found to send code 20 63 email support dcsltd co uk web site www dcsitd co uk dCS Purcell User Manual Manual for Software Is
32. Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual dCs Ltd Manual for Software Issue 2 3x August 2005 Noise Shaper Noise Shaper with Dither and Dither Only Comparison dCS 972 SW v1 54 60 16 bit truncation Noise Shaped Triangular dither 16 bit truncation Top Hat dither 80 16 bit truncation 10th order noise shaping Noise Shaped Triangular dither RE 16 bit truncation 10th order noise shaping no dither GES P ar sd o ef g a wo 1 00 di w P Q Ee o a d a D E PN VE Nr VAN ANS ee eg NT Gs SN NN Zi oc SIA MT Gah z Cy Kg Pe Ge TODO r 120 G SSN x E weer Swe SVA lt x E Ta T L vest d pot G i gi Sa t me E v ET i z A S Ge 140 fe ER PG Zen 160 0 2 4 6 8 10 12 14 16 18 20 22 Frequency kHz Figure 13 Noise Shaping and Dither Spectra Spectra of 90dB 24 bit sinewave truncated to 16 bits with dither options dCS 972 SW v1 54 60 _ 24 bit source data 80 ETT 16 bit truncation no dither 89 70 dB 16 bit truncated 91 00 dB source signal 100 a 2 4 o e e D db T 2 i i ed H SS J 7 7 i 120 gt 2 2 4 ZE il d boar S to A j TE 4 i r ni i l CN I 1 3 g I i I 1 K e d l tt ee i WW i l e 3 l o Se DH a D al e D S 1 H d ti a e E A a d fe a gt CH 4 D yi e 5 1 ay Gi i o
33. R Analogue Brown solid RCA Phono Analogue Brown long dash XLR Digital AES3 Blue solid BNC Digital Pale blue solid RCA Phono Digital SPDIF Pale blue short dash Optical SPDIF Dark magenta solid Sync Link Green solid Wordclock Dark green solid AES Reference GPS Reference Dark green long dash Red solid Dark green short dash IEEE 1394 RS 232 Purple solid Table 16 Cable colours and styles Where more than one cable of any type is used in a drawing they can be identified by a coloured sleeve at the source and a coloured arrow head at the destination Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd List of Tables August 2005 Table 1 Recommended Output Wordlength Noise Shaping and Dither EH 23 Table 2 Auto Noise Shaping settings ccccccccssessseeeeeeeeeeeeeeeseeeeeeeeeeeaeeeees 24 Table 3 AES EBU Interface Electrical Characteristics cccccceeeeeeneeeeees 44 Table 4 SPDIF Interface Electrical Characteristics c ccccccssseeeeeeeeaeeeeeees 44 Table 5 Optical Interfaces Electrical Characherstce 44 Table 6 Wordclock Interface Electrical Characteristics rrrrrrernnnnrrrrerrnnnnn 44 Table 7 IEEE 1394 Interface Electrical CGharachertstce 45 Table 8
34. Set the MS menu page to MS Mastr and wait for the unit to settle again Use the Input button to select either the SACD feed Verdi or the upsampled CD feed Purcell Use the Volume control to set a comfortable listening level Open the menu again and choose a different Filter if you wish Verdi v1 2x with Elgar Plus v4 2x will automatically select the active input Yes we know it should have no effect Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Using a Standard Purcell with Verdi and Elgar Plus This setup allows you to play SACDs through the 1394 interface and upsample the CDs to 24 bit 176 4kS s Dual AES with the Purcell The Elgar Plus is in Master Mode dCS Verdi SACD Transport XLR BNC 1394 cable Hos Op VP CTIp Ri IL XLR I 1 RCA phono cables cables Balanced _ or Unbalanced Outputs Outputs To Power Amplifier or Preamplifier Figure 5 Using Elgar Plus in Master Mode with a standard Purcell and Verdi Connect up as shown above Open Elgar Plus and Purcells menu and run the Factory routines Purcell set up Use the Input button to select the AES 1 input Use the Output button to select 44 1176 Elgar Plus set up Use the Input button to select the 1394 input and wait for the unit to settle Set the MS menu page to MS Mastr and wait for the unit
35. ace the unit will display a progress bar Next the unit will display in sequence Done 5 Done 4 Done 1 then reboot itself again The unit is ready for use If the CD transport stops or becomes disconnected during an update don t worry The original software is backed up inside the unit Proceed as follows The checking routine will find a sequencing error and Non Seq or Bad CD will appear on the display Turn the power off and on to reboot This message will scroll across the display Bad CheckSum Press Function button to attempt recovery or Bad CheckSum Press Mute button to attempt recovery or Bad CheckSum Press Menu button to attempt recovery depending on the model Press the appropriate button once The original software is retrieved from the internal backup while displaying Wait This may take a few minutes When recovery is complete the unit re boots Run the CD Update routine again to load the new software Factory Restoring Factory Defaults This feature sets most of the parameters back to the factory default settings This can be useful if the settings are accidentally changed and you need to reset the unit to a standard configuration or your children play with it Open the Menu and step through until the display shows Factory Press the BE button and leave the menu to time out After re booting the unit will return to normal operation set up as follows Input to AES1 1394ID to 0
36. after time out e g 44 1kS s Disp Out The display reverts to output sample rate after time out e g 192kS s Disp 0 The display reverts to both input and output sample rates after time out The input sample rate is shown on the left of the display and the output sample rate is shown on the right of the display e g 441 4192 Decimal figures are displayed in a smaller font size Choose whichever you prefer and wait for time out Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Bright x Display Brightness This adjusts the brightness of the main display with settings between 7 brightest and 0 off unless something is touched Open the Menu and step through until the display shows Bright x where x is a number between 7 and 0 Press the Select button repeatedly and the display cycles through Bright 7 Bright 6 snes Bright 1 Bright 0 and back to Bright 7 After time out a setting of Bright O blanks the display unless the unit is not locked Operating any control or locking to a source while in this mode turns the display back on momentarily De Emph Emphasis Processing IMPORTANT The De Emphasis page gives three options for dealing with Emphasis messages in the incoming data Strip Ignores any Emphasis messages and outputs a No Emphasis message Pa
37. al Outputs SPDIF Digital Output The AES 1 and AES 2 outputs may be used individually for digital signals with sample rates up to 96kS s The data format is AES3 For output sample rates of 88 2 and 96kS s the AES 1 and AES 2 outputs may be used together but the Output Mode see page 25 must be set to Dual AES For output sample rates of 176 4 and 192kS s the AES 1 and AES 2 outputs must be used together Purcell automatically sets the Output Mode to Dual AES Use with 110 ohm screened twisted pair cable designed for digital audio or RF Unscreened cables must not be used as they may pick up interference from other appliances The SPDIF output is used individually for digital signals with sample rates up to 96KS s The data format is IEC60958 otherwise known as SPDIF RCA connectors are the type commonly found consumer equipment Use with 75 ohm co axial cables designed for digital audio or RF use Some types of audio cable are not suitable and may cause crackling noises or other malfunctions Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd IMPORTANT IMPORTANT 1394 Interface IMPORTANT Power Link SUC IMPORTANT Power switch IEC Power Inlet August 2005 SPDIF outputs are intended for use with Single AES RCA BNC or optical inputs ONLY If the selected input is in
38. any other format the SPDIF output will carry either the left channel data or full scale noise If the selected input is SPDIF and the Copy Prohibit flag in the source data is set the SPDIF output will be the same and you will not be able to record the data Units fitted with an IEEE 1394 multi channel interface are fitted with two 6 way 1394 conneciors If there are more than eight 1394 sources in the chain Purcell can be made inactive using the Iransmit menu item see page 22 In this release the unit generates DSD data at 2 822MS s from either 1394 connector For correct operation the DAC must be locked to the 44 1kHz signal on Purcell s WCIk Out connector or the system must be locked to a master clock running at 44 1kKHz We recommend using the 1 8 metre long 6 way IEEE 1394 cable assembly and the BNC cable assembly provided See IEEE 1394 Overview on page 56 for more information Do not connect both 1394 outputs to the same DAC or other destination equipment the interface system will be stuck in an endless loop and will not work This can be linked to similar connectors on other dCS units using a link cable All units linked in this way may be turned on or off or set to standby by pressing a single Power button or sending one Remote Control command Link cables are available from dCS The Software Upgrade Connector is intended to be used by dCS service agents to load new software into Purcell Do not connect any other e
39. button again to display the 1394 interface software issue Temp Unit Internal Temperature This displays the temperature inside the unit close to the crystal oscillators Open the Menu and page through until the display shows Temp Press the SAZA button once to display the temperature in degrees Fahrenheit Press Bala again to change to degrees Celsius Serial Unit Serial Number This displays the full serial number including the hardware configuration code We will need this information to assemble upgraded software to suit your unit Have a pen and paper handy to note down the number Open the Menu and step through until the display shows Serial Press the RASI button once and the serial number will scroll across the display Contact Contact information This displays dCS email address and web site URL Open the Menu and step through until the display shows Contact Press the BR button once and the contact information will scroll across the display CDUpdate Software Update By CD Current software for dCS Elgar Plus Elgar Delius or Purcell and all Verdi La Scala or Verona software features a CD Update menu page You can update the software inside any of these products loaded with CD Update software quickly and easily from a CD supplied by dCs IMPORTANT Please follow the latest update instructions supplied with the CD The following is for guidance only You will need a standard CD Transport a CD play
40. cables are not suitable for use with Wordclock or SDIF The DAC displays Missing Wordclock between Clk Out amp Verdi Clk In e With the DAC in master mode check there is an undamaged BNC cable connecting the DAC s WCIk Out to Verdi s WCIk In e Ensure the cable is D C coupled A C coupled cables are not suitable for use with Wordclock or SDIF The DAC displays Please check source slaved to DAC Wordclock Out e With the DAC in master mode check there is an undamaged BNC cable connecting the DAC s WCIk Out to the source s WCIk In e Ensure the cable is D C coupled A C coupled cables are not suitable for use with Wordclock or SDIF The DAC displays Wrong Wordclock Verdi Clk In e Verdi La Scala has detected a clock frequency other than 44 1kHz on it s WCIk In connector Ensure the clock source is set to 44 1kHz e With the DAC in master mode check there is an undamaged BNC cable connecting Verdi La Scala s WCIk Out to the DAC s WCIk In e Ensure the cable is D C coupled A C coupled cables are not suitable for use with Wordclock or SDIF Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 The DAC remains muted e lf the DAC is displaying the Volume setting change the Diso menu page setting to Diso Fs and check for error messages e If all else is in order switch o
41. cal information page 44 information for first time users page 62 options maintenance and troubleshooting page 64 index section page 80 What does the coloured text mean If you are reading a colour print or a soft copy of this manual you will notice that some types of text are in colour e Brown text in bold is a reference to another section or page Sometimes if you are reading a soft copy of the manual page numbers are hyperlinks click on them and you will go there e Blue text is used for controls and connectors described in the hardware section e Meg eee ell EIN iS used for alternative control functions such as menu operation e Pink text is a menu page or setting e Green text in bold shows what appears on the display e Purple text in bold is used for indicators IMPORTANT Important information is presented like this ignoring this may cause you to damage the unit or invalidate the warranty The manual is designed to be helpful If there are points you feel we could cover better or that we have missed out please tell us About Sample Rates All references to sample rates in this manual use the unit kS s kilo Samples per second rather than the technically incorrect kHz Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 STEP BY STEP GUIDE Prelim
42. d and treated The major options are e generate from the signal or generate independently and add Dither It seems implausible that the dither signal can be generated from the signal but it can and this gives the lowest added noise power option It is noise shaping on its own but there are some circumstances where it needs help from additional dither e add inside or outside an error shaping loop e frequency shape to match the ears response or not We can use techniques that Suppress error energy in the areas where the ear is sensitive and put it in areas where the ear is not sensitive Usually this shuffling around process costs US we remove a little from the sensitive areas and add back rather more in the less sensitive parts but that s life We still gain some improvements PDF Probability Distribution Function References to Rectangular Dither or Triangular Dither refer to the shape of the PDF of the dither Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsitd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Table 13 gives the actual noise levels for 16 bit truncated signals with no dither various types of dither noise shaping on its own and noise shaping with dither The OdB reference level is taken as the minimum noise we could possibly get away with the amount that simple 16 bit truncation 16 bit Q noise wo
43. dCS Purcell Digital to Digital Converter User Manual Software Release 2 3x August 2005 dCS Ltd 1999 2005 Price UK 17 50 Euro 25 00 All rights reserved No part of this publication may be reproduced stored in or introduced into a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without the prior written permission of dCS Any person who does any unauthorised act in relation to this publication may be liable to criminal prosecution and civil claims for damages Information contained in this manual is subject to change without notice and whilst it is checked for accuracy no liabilities can be accepted for errors dCS is Data Conversion Systems Ltd Company registered in England No 2072115 dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Manual filename Purcell Manual v2 3x doc Page 2 email support dcsitd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 PRODUCT OVERVIEW Developed from our highly successful and acclaimed dCS 972 professional DDC the dCS Purcell is the first high precision Digital to Digital Converter DDC designed specifically for audiophile use It is used to increase the sample rate and or wordlength of the output from domestic linear PCM digital audio sources such as CD and DVD players up to a maximum sam
44. digital Output Q amp R AES EBU digital outputs AES 1 amp AES 2 on XLR male connectors S amp T SPDIF digital outputs on RCA amp BNC connectors U Optional IEEE 1394 interface on two 6 way connectors V Software Upgrade Connector 9 way D type W IEC Power inlet X Mains fuse holder Upgrader s note Units manufactured before February 2001 did not feature a Toslink input Wordclock In Out provision for a 1394 interface or the spare locations The ST input option is no longer available AES EBU Digital Input SPDIF Digital Inputs The AES input is used for digital signals with sample rates up to 96kS s The data format is AESS Use with 110 ohm screened twisted pair cable designed for digital audio or RF Do not use unscreened cables as they may pick up interference from other appliances The RCA and BNC inputs are used individually for digital signals with sample rates up to 96kS s The data format is IEC60958 otherwise known as SPDIF RCA connectors are the type commonly found consumer equipment Use with 75 ohm co axial cables designed for digital audio or RF use Some types of audio cable are not suitable and may cause crackling noises or other malfunctions Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd SPDIF Optical Input August 2005 The optical input is used for optical
45. e rrrrrrrrnrrrrrrrrnnnvrvren 42 standby mode nessi 34 35 42 Status indicator 2 0 0 eee eeeeeececeeeeeeeeeceeeeees 34 35 ST BY mdicaior 35 Step button rrrnnrrrrrnnnnornnnnnrrrnnnnronrnnnnennnnnne 21 step by step goude 10 SUC connector rrrrrrnnrnerrrnnnrvnnnnnronvnnnnennnnnne 39 supply voltage option 64 supply voltage Setting rrrrnrrrnnnnrrnnnnnrr 40 63 swap CANNES aat 27 SWIICN DOWN unde 39 SYNC tO WOrdclock rrrrrnnnnnnvnrnnnnrvnnrnnnnnvennnnnn 25 synchronising 1394 mtertace 56 SR DUAN Kursene 29 Manual filename Purcell Manual v2 3x doc English version Manual for Software Issue 2 3x August 2005 7 technical information ccccccseeceeseeeeeeeees 52 technical notes rrrnnrrrnnnnrrrnnnornannennnnennnnne 79 Temp NE aan dren 30 temperature scale rrrrrnnnnrrrnnnnrnvnnnnvnnnnnnnnne 30 temperature Imtermal 30 temperature operatmg 48 Test MEN va 29 ticks and Bue 73 UME ei E 76 UNE OUT EN 76 Timeout menu 27 Toslink mput cee ecceeceeeeeeeeeeeeeeeeeeeesaeeeeeens 80 Toslink Optical input ronnnrnrnnnnrrnnnnnnnrnnnnnnnn 74 Track n message cccseeceeeseeeeeeeeeeeeeeaeeeeens 31 transfer function staircase sneneaeeean 52 Transmit MEN KEE 22 troubleshooting secreet enai 72 73 troubleshooting 1394 interface 08 77 truncating the wordlength 15 THUG ATION use 23 24 49 52 55 truncation spectra aerrrnrnnnrvvrnnnnvnvn
46. e Control 67 Opening the battery compartment and removing batteries 67 Fitting new batteries and closing the case 67 dCS Limited Warranty 68 What This Warranty Covers 68 What This Warranty Does Not Cover 68 How To Obtain Service 68 Updating your Purcell 69 Software Updates 69 Hardware Updates 69 Safety and Electrical Safety 70 Cleaning the Case 70 Troubleshooting E 72 Fault Indication 72 Power interruption 72 Power up test errors 72 Troubleshooting Guide 13 The unit fails to power up 73 The DAC suddenly mutes Purcell repeats its power up sequence 73 The unit fails to lock to a digital audio source or displays No Input 73 The display continuously shows Locking 73 The unit locks but no signal is received 73 Using a master clock ticks and noises are heard on the outputs 73 Erratic operation when locked to 96 or 88 2kS s on Toslink or ST inputs 74 The DAC locks but noise is received 74 The DAC fails to lock to Purcell s output at 88 2 or 96kS s 74 The Remote Control fails to control the unit 74 Output audio quality is poor 75 The DAC connected to the AES or SPDIF outputs reports an error 75 When playing a DVD a short burst of noise is heard and the sample rates change 75 The DAC fails to lock to Purcell s output at 176 4 or 192kS s 75 The DAC output is monophonic 75 The stereo image is poor or out of position 75 Channel Check Phase Check and Burn In do not work 76 Cannot Set Wordlength Dither or Noise Shaping 76 Menu Timeout
47. e carrier A and pull it out Push the blown fuse out of the clip in the carrier B and dispose of it Fit a new fuse in the clip C and push the carrier back into the unit so that it clicks home Spare fuses are provided with the unit C pie Figure 15 Changing the Mains Fuse Disconnect the power cable before changing the fuse Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Fitting or Replacing the Batteries in the Remote Control For safety reasons the Remote Control is supplied with the 3 batteries packed separately Any replacement batteries must be tyoe AAA MN2400 or equivalent alkaline leak proof batteries Opening the battery compartment and removing batteries Turn the Remote Control unit over and remove the 4 screws shown in Figure 16 using the 1 point Pozidriv screwdriver supplied Please do not use a Philips head screwdriver as this will damage the screw heads Lift off the battery cover Figure 16 Removing the Remote Control battery cover To remove discharged batteries press the end back against the spring and pull that end out of the unit A small key or screwdriver may be used if the battery is a tight fit Dispose of the discharged batteries safely Fitting new batteries and closing the case To fit a new battery press the end the flat end against
48. egrades the noise performance of the system Open the Menu and step through until the display shows Dither Assuming for this example that Dither is currently switched off the display will change to Off Press the BE button slowly four times The display will show in turn the dither types available oop Hat Triangle N Tri Noise Shaped Triangle and finally Off If the DAC you are using will accept 24 bit input data set Dither to Off Otherwise consult Table 1 for the appropriate setting Choose the setting you want and wait for the Menu to time out For more information about Dither please see Wordlength Reduction on page 52 Note that for 176 4 or 192kS s output sample rates this setting cannot be changed Off is selected automatically Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd WCIk Wordclock IMPORTANT August 2005 This setting allows Purcell to be synchronised to a Wordclock connected to the Wordclock In socket while taking data from the selected digital input This helps reduce jitter The Wordclock may be generated either by a master clock or by the source equipment The source equipment MUST also be synchronised to the Wordclock Select the input you want to synchronise to the Wordclock using the Input button Open the Menu and step through until the display shows WCIk Of
49. enaannnnnnannnnnneennnnnnennenenne 73 LOCKING message 25 LOUGIMCSSAG Gives ceacaeronncerdnteseansedereaecsevadecst 29 M man EPA au 27 35 mains supply voltage opton 64 MAINTE AN ee En 66 master leie 38 73 master clock locking problems 73 email support dcsltd co uk web site www dcsitd co uk dCS Purcell User Manual dCs Ltd master clock usemg 25 master mode DAG USING rrarrrnnnnrennnnre 16 17 Menu Select button 21 Menu Step Back button 21 35 Menu Step button rrronnnrrrrnnnrorrnnnnennnnn 21 35 MENU UME e E 21 27 menu times out 100 soon 27 MENU 1394 RE 80 MESSAGE veden 51 message ACTIVE rrnnnannnnnnnrnnnnnrnnnnnennannnnnnnene 77 message EMPHASIS ccccccsseeeeceseeeeseeees 27 message handling ccccsesceeeseeeeeeeeeeeeeees 51 message Inachve 77 message Missing Wordclock between Clk Out EE 77 message NoCGomms 77 message Please check source slaved to DAC Wordedbek a TEE 77 message SET NES 77 message Verdi Wordclock Missing 77 message Wrong Wordclock Verdi Clk In 77 Missing Wordclock between Clk Out message from DAC 77 mode UN 25 38 mode SAD ae 34 MONO UP aa 75 MUSIC DY PUCE EE 5 N N Shap E UE 24 No Comms message 77 No Input message soennnnoennenennnenennennnnnen 35 NO SION EE 73 No Track message rrrnnnnrnnnnnnrnnrnnnnvnnnnnnrnnnnn 31 NOSSA enn 49 50 52 NOISE TOON OWEN sa 53 NOISE
50. er or a dCS Verdi to play the CD A few CD players are not suitable because they upsample to 48kS s or change some of the data bits in other ways one example is the ML37 Don t worry the CD Update routine detects these and stops preventing any changes to the internal software If you are updating adCS Upsampler or DAC Connect an AES or RCA digital output from the Transport to the Upsampler or DAC and select the input you have just connected Disconnect any 1394 interface cables If you are updating a dCS DAC connected to the Transport through another device Connect an AES or RCA digital output from the other device to the DAC and select the input you have just connected Set the other device to bit for bit mode Cloning on adCS Upsampler Disconnect any 1394 interface cables If in doubt connect the DAC directly to the transport If you are updating a dCS Verona Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd IMPORTANT August 2005 Disconnect ALL cables from the unit except the power cable Open the Menu on the unit to be updated and step through until the display shows CDUpdate Make sure the transport is in STOP mode Press the BIZ button to start the routine When the unit displays Cable connect a BNC cable from the Ext Ref Input to a BNC SPDIF digital output on the transport The
51. f or WCIk In Press the Eta button to switch between these two options When you have the option you want wait for the Menu to time out and the display to revert to its normal mode Set to WCIk Off Purcell ignores clock signals on the Wordclock In socket Set to WCIk In Purcell remains locked to the selected input If a Wordclock is connected to the Wordclock In socket Purcell automatically slaves to it If the Wordclock is not at a standard frequency is out of capture range or Is a superclock the unit will display Locking Fs for 1 minute then Revert to Slave for 10 seconds and reset itself to WCIk Off This menu must be set separately for each selected input allowing you to synchronise some of your source equipment for example a CD player running at 44 1kS s connected to the RCA input to a 44 1kS s master clock while synchronising equipment running at other sample rates for example a DVD player running at 48kS s connected to the BNC input to the data stream instead Out Mode Output Mode This menu page allows the AES output data to be formatted in one of two ways single Use this mode if your DAC will not accept Dual AES or DSD In Single wire mode PCM data is available from all of the AES 1 AES 2 RCA and BNC outputs at sample rates up to 96kS s Dual AES Use this mode if your DAC will accept Dual AES This setting disappears if the output sample rate is less than 88 2kS s or set to DSD If the output
52. ff the Transport the Upsampler and the DAC then switch them on again If this situation keeps recurring please consult your dealer The DAC takes a long time to unmute e The 1394 interface can take around 30 seconds to settle and unmute e Try setting the DAC to 1394 mode before setting the Upsampler to DSD mode e If your system is in standby mode or switched off try turning the DAC on before the Upsampler or Transport If this information does not resolve the problem please contact your dealer for advice Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 IF You NEED MORE HELP In the first instance you should contact your dealer If they cannot resolve the issue contact dCS Our office hours are 8 30 a m to 5 00 p m Monday to Friday UK time GMT in Winter or GMT 1hr in Summer Contact us by phone or fax on Inside the UK Outside the UK Telephone 01799 531 999 44 1799 531 999 Fax 01799 531 681 44 1799 531 681 Table 15 dCS Contact Information You can write to us at dCS Ltd Mull House Great Chesterford Court Great Chesterford Saffron Walden CB10 1PF UK Our email address support dcsltd co uk Our web site is www dcsltd co uk The web site is regularly updated You will find full details of all dCS products here plus the latest dCS news Other Informatio
53. g can be ordered from dCS or our distributors Purcell contains no user serviceable parts Do not attempt to open the case as there are potentially dangerous voltages present inside In the event of the unit developing a fault please consult your dealer This equipment MUST be connected to a safety earth or ground via the power cable 18 The IEEE 1394 interface is an optional extra with Purcell or Delius units and is not yet available with Verona Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Mains Voltage Setting Before connecting the power cable to your Purcell for the first time please check that it has been set to the correct operating voltage for your local mains supply 50Hz or 60Hz operation is not important the unit can use either The unit s present voltage setting is shown on the label beneath the mains inlet on the rear panel If this does not match your local supply voltage DO NOT attempt to use the unit Contact your dealer to arrange to have the unit reset Using the Purcell with the wrong mains setting for your local supply may result in serious damage to the unit and will invalidate the warranty DO NOT attempt to reset the unit yourself IMPORTANT Please use a sensible power cable such as the one supplied with the unit Some audiophile power cables presently availab
54. hannel inverted for several seconds This is displayed briefly at the end of the test The ear responds to positive pressure substantially more than it does to negative pressure for low frequencies so it is worth getting the phasing correct Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 If both channels are in phase the first burst of noise will produce a stable central image but the second burst will not If one channel is out of phase the second burst will produce a stable stereo image but the first will not If there is a phasing error check for wiring errors from the unit output onwards You cannot correct this error on a dCS DAC using the Phase feature as this inverts both channels Burn In Burn In Signal Generation IMPORTANT IMPORTANT Test Display Test Read all the steps in this section before starting the System Burn in routine The Burn in routine outputs a signal at maximum volume This routine is NOT suitable for burning in loudspeakers Ensure your loudspeakers are disconnected or your power amplifier is switched off before starting this routine Use this feature to burn in your system components with modulated pink noise It is disabled when in DSD SACD mode Set up your system volume control to the usual setting Open the Menu and step through until
55. he IEC60958 standard and is implemented as follows e Consumer e Copy prohibit flag is passed through from an SPDIF input Copy Permit if the input is AES e Non Audio flag Off e Emphasis flag is determined by the input and the De Emphasis menu setting 10 AES3 1992 ANSI S4 40 1992 AES Recommended practice for digital audio engineering Serial transmission format for two channel linearly represented digital audio data available from the AES 11 dCS 24 96 and 24 194 Coding Formats 1997 available from dCS on request Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 GENERAL TECHNICAL INFORMATION Wordlength Reduction 12 Wordlength reduction truncation causes an error signal to be added to the wanted signal The error signal is usually referred to as Q noise or Quantisation noise the approximation is made that the errors are noise like This is true for large signals but for smaller ones it is not so As the wanted signal gets smaller the complexity of the error signal decreases and the errors first of all pile into ever lower order harmonics or intermods and then as the level of the signal sinks below the Q level much error power piles into the fundamental This causes its amplitude to become unpredictable it may drop abruptly to zero and disappear o
56. hitecture If Noise Shaped Triangular dither is used then there is very little weighted degradation in the final signal although the quite high level of total noise power now present means that the process should be carried out after major editing There is another option not supported by the dCS Purcell generate the dither independently of the signal and frequency shape it prior to addition but do not add it in an error shaping loop This seems to dCS to combine the worst of all worlds the high noise floor in the 0 6 kHz area of straight dither and the high total noise of noise shaping However some people use it What does it look like Figure 13 gives the spectra of 16 bit truncated 44 1 kS s signals with a 90dBO sine present for two dither only signals Top Hat Noise Shaped Triangular a 10 order noise shaped signal and a 10 order noise shaped signal with added Noise Shaped Triangular dither The equivalent simply truncated spectrum is shown in Figure 14 separately because it is so revolting In it we can see that at the signal level shown 91dB0 error power from the quantising truncation is beginning to pile into the fundamental which is showing an amplitude error of 1 3 dB This would show up on a conventional linearity plot although the sign of the error could be either way 1 gt for example from synthesisers for comparison with the table 10 and 9 order noise shaping are very similar Manual filename
57. ia Mundi HMC901439 London Baroque 10 Sonatas a 4 Harmonia Mundi HMC901438 London Baroque Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual dCs Ltd CONTENTS August 2005 Product e EE 3 Henry Purcell 1659 1695 rrsanarannnavannavennnavnnnavennnavenansvannnnennnnnennnavennnnvannssvnnner 4 COMENTS NSA 6 About this Manual 9 What does the coloured text mean 9 About Sample Rates 9 ESN GUS conesa i a aia aE is 10 Preliminaries 10 Step 1 Selecting a Digital Input 11 Connecting to a Single AES or SPDIF source 11 Step 2 Setting the Output Sample Rate 11 Sample Rate Conversion 11 Bit for Bit Operation 11 Setting the Output mode 11 Step 3 Connecting the Digital Outputs 12 Connecting a Single AES or SPDIF Output 12 Connecting the Dual AES Outputs 13 Connecting the 1394 Interface 14 Step 4 Reducing the Output Wordlength 15 Other Settings 15 KI elle H NT vie e Le E 16 Using a 1394 Equipped Purcell with Verdi and Elgar Plus 16 Using a Standard Purcell with Verdi and Elgar Plus 17 Upsampling to Dual AES DAC in Slave Mode 18 The Software The Menu n ernnnnennnnnnnnnnnnnnnnnnnnnnennnnnnnnnnennnnnennnnnennnnnnnnnnennnnner 20 Using the Function Menu 21 Opening the Menu 21 Types of Menu Page 21 Closing the Menu 21 Menu Sequence 22 Filter Interpolation Filter Setting 22 Transmit Activating the 1394 Outputs 22 1394 ID
58. iceship by copying books of organ parts In 1677 Purcell was appointed composer in ordinary for Charles II s string ensemble and then two years later took over from his mentor John Blow as principal organist for Westminster Abbey This post entitled him to a salary and also provided a house At the age of 21 he wrote his first Welcome Song for Charles Il and also his first music for the theatre Purcell was exceptionally skilled in the way that he set a libretto to music particularly in fitting phrases of varying and uneven length A good example is Dido s final lament When I am Laid in Earth Also about this time he began to produce a wide range of music for the church It is no understatement to say that for sheer beauty and intensity of emotion his sacred music has few peers In 1682 he succeeded Edward Lowe as organist of the Chapel Royal a position which also entailed him being a singer in the choir The following year he wrote one of his best known sacred pieces an Ode for St Cecelia s Day After the death of John Hingeston in 1688 Purcell was appointed organ maker and Keeper of the Royal Instruments His greatest achievement was the opera Dido and Aeneus which was written in 1689 for performance by Young Gentlewomen at Josia Priest s boarding school at Chelsea in London It is the earliest English opera still to be regularly performed His later works for the theatre Dioclesian King Arthur The Fairy Queen The Indian Quee
59. identifying Selects the format of the data outputs Dual AES Ch Check Outputs tone on L channel only then R Displays the unit full serial number Manual for Software Issue 2 3x August 2005 Sets the output wordlength Sets the Noise Shaping order Out Word lt 24 bits 24 bits 22 bits WClock Slaves to Wordclock In if it is Sets the Dither type present WCIk Off WCik In Ph Check Outputs noise on Outputs modulated both channels then pink noise to burn inverts R in your system CAUTION LOUD issue fa Test Displays the Runs a display test routine software version number Db 2 06 feature is not available in DSD mode email support dcsltd co uk web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Using the Function Menu Opening the Menu Types of Menu Page Closing the Menu The Function Menu gives the user access to a wide range of additional features It also allows new features and performance enhancements to be added at a later date by software upgrades The Function Menu is controlled by three buttons e the Function button opens the menu and doubles as the DIE button e the Step gt button pages forward through the Menu referred to in the text as the button e the lt Step button pages backward through the Menu referred to in the text as the button If you have adCS Remote
60. igital Input Output AES EBU Digital Outputs SPDIF Digital Output 1394 Interface Power Link SUC Power switch IEC Power Inlet Mains Fuse Additional Information Remote Control Purcell button and LED Standby button Function button Input Selector buttons Filter button Display button Up Down T J buttons Digital Interface Specifications Sample Rates Frequency Response DDC mode Spurious Free Dynamic Range DDC mode Sample Rate Combinations and Filter Options Clocking Synchronising to source Power requirements Size and Weight Operating Conditions Noise Shaping Dither Message Handling AES outputs SPDIF outputs What does it look like IEEE 1394 Overview Synchronising IEEE 1394 interfaces Automatic Input Selection dCS IR Remote Control Codes Upsampler DACs Transports Manual filename Purcell Manual v2 3x doc English version Manual for Software Issue 2 3x August 2005 email support dcsltd co uk web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Positioning the Unit 63 DNS 64 IEEE 1394 Interface 64 IR Remote Control 64 Mains Supply Voltage 64 Having Your Options Changed 64 Maintenance and Support ssnnnxxnennnnnnnnnnnnnnennnnnnnnnnnnnnnnnnnnnnnnnnennnnnnnnnnnnnennnnnnn 66 Service amp Maintenance 66 Obtaining Service 66 Mains Fuse 66 Replacing a Blown Fuse 66 Fitting or Replacing the Batteries in the Remot
61. inaries IMPORTANT This section guides you through setting up the unit for basic operation You may find this useful if you have not used the Purcell for a while The Control Summary sheet details the menu structure and outlines the use of the front panel controls For more information see the Function Menu section on page 20 For digital interfaces use with cables designed for digital audio e for AES EBU interfaces use 110Q screened twisted pair cables fitted with one male XLR connector and one female XLR connector e for SDIF Wordclock or SPDIF BNC interfaces use 75Q coax cables fitted with BNC plugs e for SPDIF RCA interfaces use 75Q coax cables fitted with RCA Phono plugs e for TOSLINK optical interfaces use Toslink fibre optic cables e for IEEE 1394 interfaces use the IEEE 1394 cable provided with the unit Connect the power cable supplied to the Power inlet on the Purcell rear panel plug the other end into a convenient power outlet Please do not use an excessively thick power cable as this may damage the power inlet connector Press the Power button and wait about 30 seconds while Purcell configures itself The display will show in sequence Purcell Testing and No Input If the unit is likely to be set in an unfamiliar state you can reset it as follows Press the Function button once then press the Input button so the display shows Factory Press the Select button and wait while the unit reboots
62. ing set the player in PLAY mode and check that the unit locks e Occasionally we find a CD player whose sample rate is outside the standard 300ppm tolerance specified for CD players If Purcell locks to another source but not to your CD player the player may need servicing e If you are using Master Clock try slaving to the audio input If the unit locks check the Wordclock connections and the WCIk setting The display continuously shows Locking e Check that a valid signal is connected to the selected digital input e Check that the digital cable is fully plugged in at both ends Try another cable if possible Broken cables are a VERY common cause of faults The unit locks but no signal is received e Check that the source device is in PLAY mode e Purcell may be receiving digital silence e f you are using a Master Clock or other external Wordclock check that the selected digital source is connected correctly Using a master clock ticks and noises are heard on the outputs e Check that the Master Clock sample rate is an exact multiple of the sample rate of the source equipment connected to the selected input e Try setting WCIk to Off e Check for faulty cables and ensure they are properly screened e If the output sample rate is not the same as the input sample rate the DAC or other destination equipment must NOT be synchronised to the master clock Either slave it Purcell s digital output or to Purcell s Wordclock Ou
63. lass cleaner containing ammonia and wipe off gently with a soft cloth taking care to avoid scratches Do not spray the cleaner onto the connectors or the rear panel Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Manual filename Purcell Manual v2 3x doc Page 71 email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 TROUBLESHOOTING Fault Indication Purcell detects the following fault conditions Power interruption If the AC supply is momentarily interrupted or is more than 20 below it s rated voltage the unit displays PowerDn and mutes the audio outputs to protect your loudspeakers from damage This may be caused by loose AC power wiring local power line overloads or heavy duty appliances like air conditioners If this message appears frequently other than when switching the unit off please consult your dealer Power up test errors If Purcell detects a fault during its power up test routine it will remain muted and display one of these messages e DSPs Not Loaded 01 e FPGAs Not loaded 02 e Bad Checksum Press any key to attempt recovery 03 e DSP Err1 04 This can be caused by power line transients occurring during system configuration For Bad Checksum press any butt
64. le 76 channel check routine saennsnennnesennenennnnn 27 Cleaning the case 70 clock cleaning Lua 47 COCKING EE 47 CONE MOTE sr 26 closing the Function Men 21 connecting the outpoute 12 connector Power Link rarnannnnnnnnnnnnnnnnvnnnnnee 39 contact Imtformaton 30 79 Contact unn EE 30 CONTENTS Of DOX EE 62 crystal oscillator rrrrrnnnnnrerrnnnnrnvnnnnnennnnnre 47 D IO MESSAGE se 35 DAO EE 3 35 75 81 DAC TUE Kadare 73 DAC non audio mute 35 DAC remains muted 1394 input 0 78 DAC takes time to unmute 1394 input 78 el 81 al 81 DIDO EEE 3 81 de emphasis rrrrrnnnrorrnnnnonrnnnnrnnnnnnnnen 27 51 definitions er 81 digital interface specifications 0008 44 PISO MENU EE 26 display blanking errrnnnrnrnrrrnnnrnvrnrrnnnrnvnnnnnnn 27 display brightness rrrrnrrnnnrrrrrrrnnnrrvrnnnnnn 27 Display button remote rrrrrrrrnnrrrrrrrnnnnnr 42 display defaults rrrrrnnrrrrnrrnnnrrrrnrrnnnnnrnnnnnnn 26 display SHOWS locking nnnonnnnnnnaannnnneennnne 73 display test routine rrrrnrrnnnrrrrrrnnnnrrvvnnnnnn 29 display MAN sa 35 displaying Tomat 26 email support dcsltd co uk web site www dcsitd co uk dCS Purcell User Manual dCs Ltd displaying Sample rate nnn0aannnnnaenennnani 26 al 50 52 53 55 75 dither EE 24 dither type rrrrnnrrrvvrrnnnnnvrvrrnnnnnvrnrrnnnnnvnnnnnnn 24 dither noise added
65. le are excessively heavy their weight can damage the power inlet connector Such damage is not covered by the warranty Positioning the Unit Place Purcell on a firm vibration free base so as to allow convenient connection to your digital source We suggest that you avoid siting Purcell either directly above or below preamplifiers or tuners if either of these will be used in your system at the same time as Purcell Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 OPTIONS The following options may be fitted to new units or retrofitted at a later date Option code 1394 IEEE 1394 interface RC IR Remote Control V5 Mains voltage set to 230 240V V4 Mains voltage set to 215 220V V3 Mains voltage set to 200V V2 Mains voltage set to 115 120V V1 Mains voltage set to 100V Table 14 Options available IEEE 1394 Interface We can fit an IEEE 1394 interface to enable the unit to generate receive DSD data on either of two 6 way connectors The cost of this option depends on the age of your unit Note the full serial number of your unit and contact your dCs distributor for advice This option must be fitted at dCS to allow full checking For more information see IEEE 1394 Overview on page 56 and Rear Panel on page 37 IR Remote Control The infra red Remote Control unit supplied wi
66. lename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Manual filename Purcell Manual v2 3x doc Page 43 email support dcsitd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 PURCELL TECHNICAL INFORMATION Digital Interface Specifications AES EBU AES3 Input Output Type Balanced differential Impedance 110 110 Q Sensitivity unloaded 1 10 7 V pk pk Maximum Wordlength 24 24 bits Connector XLR3 female XLR3 male x2 Connections Pin 1 Ground or shield Pin 2 Signal Pin 3 Signal Table 3 AES EBU Interface Electrical Characteristics SPDIF electrical Input Output Type Single ended ground referred Impedance 75 75 Q Sensitivity unloaded 0 5 1 0 V pk pk Maximum Wordlength 24 24 bits Connector RCA Phono or BNC Table 4 SPDIF Interface Electrical Characteristics SPDIF optical Toslink Input Type Optical Wavelength 660 nm Maximum Wordlength 24 bits Connector Toslink EIAJ CP 340 Table 5 Optical Interfaces Electrical Characteristics Wordclock Input Output Type Single ended ground referred Impedance 100 25 Q Sensitivity unloaded TTL TTL Connector BNC BNC Table 6 Wordclock Interface Electrical Characteristics Manual filename Purcell Manual v2 3x doc email suppor
67. lish version Manual for Software Issue 2 3x August 2005 wrong emphasis Tag 27 Wrong Wordclock Verdi Clk In message from RE 77 Wrong message 31 email support dcsltd co uk web site www dcsltd co uk
68. ly transmitted digital signals with sample rates up to 48kS s In practice the interfaces are tested up to 96kS s but dCs cannot guarantee this with non dCS source equipment The data format is IEC60958 otherwise known as SPDIF If fitted use the Toslink input with Toslink fibre optic cables designed for digital audio use If fitted use the ST input with ST style fibre optic cables Pull off the plastic cover before use Wordclock Digital Input Output IMPORTANT WCIk In accepts a Wordclock at sample rates up to 96kS s It allows Purcell and your source equipment e g CD or DVD player to be synchronised to a master clock This arrangement helps reduce jitter which can degrade the audio output See WCIk on page 25 for more details If the input and output sample rates are not the same you cannot synchronise the DAC or other equipment driven from Purcell s outputs to the master clock Slave it to Purcell s digital outputs or WCIk Out instead WCIk Out is intended to synchronise other equipment to Purcell It provides a Wordclock at the sample rate of the AES 1 output up to 96kS s If the selected Output Mode see page 25 is Dual AES WCIk Out will run at half the output sample rate Purcell must be locked to a source rather than unlocked attempting to lock for correct operation of this output There is no data on the wordclock interface Use with 75 ohm co axial cables designed for digital audio or RF use AES EBU Digit
69. m is a lack of a formal interface standard covering sample rates above 48kS s When a new standard is agreed Purcell s software can be updated to comply with it This is unlikely to improve the situation with existing disks Meanwhile we Suggest you reduce the volume at the end of the track where a change occurs and increase it when Purcell and the DAC display a new sample rate The DAC fails to lock to Purcell s output at 176 4 or 192kS s Check that the destination device is able to work at these rates and that is appropriately set up Check with the manufacturer or dealer if necessary Check that the appropriate inputs have been selected on the destination device Check that both of Purcell s AES 1 and AES 2 digital outputs have been connected to the DAC Check that the digital cables have been fully plugged in at both ends Try another pair of cables if possible The DAC output is monophonic If Purcell is set to Dual AES Output Mode check that the DAC is set to receive Dual AES Check that both AES 1 and AES 2 cables are connected and not faulty If Purcell is set to Dual AES Output Mode do not use the RCA or BNC outputs Dual AES Output Mode is automatically selected when you set the output sample rate to either 176 4 or 192kS s The source disk tape may actually be monophonic The stereo image is poor or out of position If you are using Dual AES Output Mode check that the AES 1 and AES 2 cables are not swapped over If
70. n dCS produce technical notes from time to time on issues related to ADCs DACs and DDCs If you are interested in these please check our web site Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 INDEXES AND SOFTWARE VERSION NUMBERS Software History This manual is for Purcell software version 2 3x IMPORTANT Updating to v2 3x from v2 2x or earlier is normally carried out by dCS Distributors as it is necessary to install a license into the unit after updating to restore normal operation Version 2 3x differs from 2 2x versions as follows Purcell can lock to an external word clock that is at an exact multiple of the sample rate For example with a input data rate of 48kS s the word clock may be at 32 48 or 96kHz previously 48kHz only Version 2 2x differs from 2 1x versions as follows e Units with 1394 option only DSD mode is now selected from the Output button instead of the Out Mode menu e 1394 ID menu added to identify multiple 1394 sources e After a Factory reset the output mode and sample rate are set to match the other dCS units in the system e 1394 operation generally improved system messages changed e emp menu added Version 2 1x differs from 2 0x versions as follows e menu order rearranged e improved IEEE 1394 interface behaviour Version v2 0
71. n and The Tempest whilst containing excellent music sadly do not lend themselves to performance apart from the plays for which they were written Not much is known about his final years although he undoubtedly remained active as a composer The last Royal occasion he provided music for was Queen Mary s funeral in 1694 He died the following year and was buried in Westminster Abbey Although Purcell s genius spanned every musical genre of the period he is best remembered for his Opera Dido and Aeneus and his choral music particularly his Te Deum Jubilate and Sound the Trumpet all of which are still regularly performed Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Some of Purcell s music may be found on the following recordings Complete Anthems and Services Vol 1 Hyperion CDA66585 Choir Of New College Oxford Complete Anthems and Services Vol 2 Hyperion CDA66609 Choir Of New College Oxford Dido and Aeneas opera Chandos Chaconne CHANO0521 Andrew Parrott Taverner Players amp Taverner Choir 15 Fantasias EMI CDM7630662 London Baroque 7 Sonatas a 3 amp Pavans Chandos CHAN8591 Purcell Quartet 5 Sonatas a 3 2 Sonatas a 4 Pavans amp Fantasias Chandos CHAN8663 Purcell Quartet 8 Sonatas a 4 amp Voluntaries Chandos CHAN8763 Purcell Quartet 12 Sonatas a 3 Harmon
72. new dCS Elgar Plus or Delius DACs It is available as an optional extra with Purcell but is most use with a dCS DAC Purcell button and LED Standby Function ERR AES AES2 OO RCA RCA2 OO BNC Input Filter OOG N Figure 10 The Remote Control The Remote Control normally controls a dCS Elgar Plus or Delius DAC To use it to control a Purcell press the Purcell button C and the blue LED will light up for about 5 seconds Pressing a button during this time will transmit an Upsampler code instead of a DAC code and keep the Remote Control in Purcell mode the blue LED stays on for another 5 seconds Press the Purcell button again while the LED is lit to return to DAC mode or just wait 5 seconds Manual filename Purcell Manual v2 3x doc English version email support dcsltd co uk web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Standby button a When you have finished listening press the Purcell button and then press the Standby button while the blue LED is on The digital outputs will mute and all displays will turn off except the PWR and STBY indicators In this mode Purcell uses less power but stays warm To restore normal operation press the Standby button again and Purcell will power up ready for use Note that standby mode will be cancelled if power is lost or a brown out occurs Function button B Opens the Function
73. nnamaker J AES vol 39 no 11 p836 852 Psychacoustically Optimal Noise Shaping R A Wannamaker J AES vol 40 no 7 8 p611 620 Manual filename Purcell Manual v2 3x doc email support dcslid co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Dither The dCS Purcell uses relatively unusual dither generators to achieve the very good statistics necessary for audio purposes Many dither generators use PRBS generators Pseudo Random Binary Shift register generators These are well known well documented and very predictable but unfortunately their Statistics are not that great The problem shows up as a spectrum that is not flat and histograms PDFs Probability Density Functions that diverge from the ideal quite significantly Adding dither adds noise Top hat dither uses one generator per channel to add 0 5 Isbs p p of rectangularly distributed dither and triangular dither uses two generators per channel to add 1 Isbs p p of triangularly distributed dither This is on top of the Q V12 rms dither from wordlength reduction in the first place where Q is the size of the output word Isb The noise shaped triangular setting uses one generator to add 1 Isbs p p of triangularly distributed dither that is frequency shaped and so has low perceived weighted noise power This last is a significant test of generator performance the dCS Purcell performs very
74. nnnrennnnnr 75 sample rate Combinatons ees 47 sample rate oufput eee 23 35 38 PE A E O AEE A ANEETA AAE T 81 Search message ercer teet E hetis 77 Select DUO DEE 21 36 selecting a single wire mput 11 selecting AN Imput 11 SEA NCI EEN 30 serial number full ya suuasissmes verka 30 serial number en EEN 40 SENICE ee 66 68 Selling Dual Eeer 11 setting output mode rrrrnnrnorrnnnnovnnnnnnennnnnre 11 setting supply voltage rrrrrrarrernnrrernnnennnn 63 settings after Factory reset eee 32 settings Auto Noise Shaping c000 24 SNE AE S ee 25 Single AES output Connechng 12 single wire output mode 11 Le 48 SOMWare SSE NN 29 software update by CD 30 software Die EE 69 software upgrade connector rrrrrnnrrerrnnrr 39 GER Version ass 80 source NAME 1394 rrarrnnnnnnnnnnnnnrnnnnrnnnnnnnnnen 23 source synchronising fo 47 Se DE e E eele enee 51 81 SPDIF input selecting rrrrrrnnnnnrerrnnnnnennnnn 11 DIF IA DUIS mrri E 37 38 SPO IF lte e EE 38 SPDIF output Conpechmg 12 SOEC II CAUON arne 44 specification AES3 WO 44 specification IEEE 1394 interface 44 specification Optical IC 44 specification SPDIF WO 44 Specification wordclock snaannennannnnennnnnan 44 spectrum upsampling rrrranrrnnnnnrnnnnrnnnnnnnne 46 Spurious free dynamic range s sesseneenen 46 ST optical input option 74 Standby button remot
75. nnnvnnnnnnnnn 54 U up down buttons remote rrrnnnnrrrnnnrrnnnnen 42 UDdA ES ete 40 69 updates hardware soannnooannnnennnnennnenennne 69 updates software 69 updating software by CD 30 updating your Purcell ccccceeesseeeeeeeeees 69 upgraders note ccseesceeeeseeeeeeeeeeeeees 37 80 Upgrade ve 3 WS AMIDINNG EE 3 23 upsampling spechrum 46 upsampling improvements sssseseeneeeee ene 3 using DSD EE 16 using Dual AE 17 18 using for the first me 62 using with Verdi and Elgar PIus 16 17 V Ve eee 47 Verdi Wordclock Missing message from DAC EE ee 77 VXXX MESSE EE 31 W Warn erna 68 warranty EXCIUSIONS arrrrnnrerrnnnrrnnrrernnnrnnnnnr 68 WOLK Maal EE 36 WV GIR menter 25 La LEE 48 Word Clo Kinsa tere aed 81 WWOROCIOC EH 25 73 80 WOordel ck Input eieiei ee 38 wordclock OUTPUT rannnrrnnnnnnnrnrrnrrnnnnnrnnnnnnnnne 38 wordclock external arrnrnnnnnnnnnnnnnrnnnnnnnnnnnnn 73 wordclock SYNC Io 25 email support dcsltd co uk web site www dcsitd co uk dCS Purcell User Manual dCs Ltd wordlength rranrnnnnnnonnnrnrnnnnrnnnnnennnnre 3 51 75 wordlength INPU rarnnnnnnnnnrrrnnnrennnnnnrnnnnnnnen 26 wordlength OUtDU cccseeeeeeeeeeeeeeeeeeeeens 23 wordlength reduction ranrrnnnnrrnnnnrnnnnre 15 52 Wrong CD message onoennnnnoennnneseenenennenne 31 Manual filename Purcell Manual v2 3x doc Eng
76. o i wv t 1 t as d i i Ge i H EE 4 1 e y st a i vi l wi e NE NTT E EN ee TN NNN T I a Vi uw o AA IN a a e y L A L r Ag Bi I E D i v d 1 D LV 160 Aa nha Aa N N A n Il ml m A 0 2 4 6 8 10 12 14 16 18 20 22 Frequency kHz Figure 14 Truncation Only Spectra Manual filename Purcell Manual v2 3x doc English version email support dcsltd co uk web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 IEEE 1394 Overview The IEEE 1394 interface is a high speed multi channel system It has the Capacity to carry over 50 channels of DSD Direct Stream Digital or over 30 channels of 24 bit 192KS s audio data through a single cable From October 2001 onwards a pair of 6 way electrical IEEE 1394 interfaces running at 200Mbit s are available on the following dCS products dCS Elgar Plus DAC standard fit with software version 4 10 or later dCS Delius DAC optional fit with software version 2 10 or later dCS Purcell Upsampler optional fit with software version 2 11 or later dCS Verdi SACD CD Transport standard fit dCS Verdi La Scala Upsampling SACD CD Transport standard fit dCS Verdi Encore Upsampling SACD CD Transport standard fit In the current implementation Purcell can upsample standard digital formats such as CD at 44 1kS s 16 bits to DSD at 2 822MS s and output a stereo pair of DSD data onto its 13
77. on to try to clear the fault Otherwise try switching off waiting 20 seconds then switching on again If the fault persists please consult your dealer Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Troubleshooting Guide If you experience difficulties when using Purcell the following suggestions may help resolve the problem The unit fails to power up e Ensure there is power available on the mains cable Connect the power cable press the Power button e Check the rated supply voltage shown on the rear of the unit matches the local supply voltage e Check that the fuse has not blown if so correct any obvious cause then replace the fuse as described on page 66 The DAC suddenly mutes Purcell repeats its power up sequence e This may be caused by short drop outs or brown outs on the AC supply When the disturbance has passed normal operation should be restored e Check for loose mains wiring The unit fails to lock to a digital audio source or displays No Input e Ensure the correct input is selected see page 34 e Check that the digital audio cable is of the correct type correctly connected and not damaged Damaged cables are a VERY common cause of malfunctions e Check that the source is switched on e Some CD players do not generate a digital output unless the disc is play
78. one of the spring contacts in the battery holder then press the battery into its slot Battery polarity is indicated on the battery holder and on the diagram below Always fit a complete set of 3 new batteries Figure 17 Changing the Remote Control unit batteries IMPORTANT Please ensure the batteries are fitted the right way around failure to do so may damage the Remote Control and invalidate the warranty Damage caused by leaking batteries is not covered by the warranty To re assemble the case fit the battery cover ensuring the side with the recessed holes is outward Replace the 4 screws taking care not to over tighten them The Remote Control is ready for use Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 dCS Limited Warranty What This Warranty Covers IMPORTANT Provided the sale of this dCS product is registered with dCS within 30 days of the original purchase this warranty covers parts and labour to correct any defects in materials or workmanship for a period of 1 year from the date of purchase A copy of the original bill of sale may be required to verify the date of purchase Registration is generally completed on your behalf by the authorised dCS reseller However it is your responsibility to ensure that the product is registered If you do not receive a warrant
79. ooting section on page 72 You may be able to resolve the situation yourself for example by changing a menu setting If this does not resolve the problem contact your authorised dCS reseller for advice quoting the model the full serial number the software version and giving a detailed description of the fault If you are unable to contact the reseller you may contact dCS directly at dCS Ltd Mull House Great Chesterford Court Great Chesterford Saffron Walden CB10 1PF UK Phone 44 0 1799 531999 Fax 44 0 1799 531681 eMail support dcsltd co uk Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Updating your Purcell dCS products make extensive use of software configurable chips FPGAs and DSPs This gives us the ability to update our products to add extra features update digital interface standards or make performance improvements by loading new software Occasionally a hardware update may be necessary also to increase the capacity of the electronics add extra connectors or extra front panel controls Software Updates Please note that not all software updates make an earth shattering change You should have a clear idea of what you expect to gain before updating to the latest issue If the software loaded in your unit is for example version 3 45 e A change to
80. or wait for it to get there of its own accord If the unit has to wait for the right track it will display Found Track 1 then Found Track 2 etc until it finds the right one Vx xx will appear on the display this is the new software issue number If the unit displays No Track repeat the procedure but manually advance the transport to track n Next the update progress is displayed in one of the following formats e The display counts up from 0 0 7 to 99 0 7 displays Copying counts up from 0 1 7 to 99 1 7 displays Copying and so on until the last section is loaded and copied Some models may use less than 8 sections e A moving dot counts down slowly from about 3 to 0 After about 15 minutes the update is complete and the unit will reboot itself If the CD is still playing you can stop it now H the unit being updated has a 1394 interface wait until the unit has settled about 30 seconds switch it off for 10 seconds then on again Manual filename Purcell Manual v2 3x doc email support dcslid co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd OOPS August 2005 If the unit detects no change in the 1394 interface code it will boot up as usual and be ready for use If the 1394 interface code has been updated the unit will load the new code into the flash memory on the 1394 interface board this takes about 10 minutes While this is taking pl
81. ple rate of 192kS s and a maximum wordlength of 24 bits This is achieved using extremely powerful and accurate digital interpolation filters which introduce negligible levels of distortion When decoded by an appropriate DAC the upsampled signal from the Purcell shows improved dynamics more dimensional stereo imaging in terms of both width and depth more accurate bass better resolution of fine detail and a more relaxed and natural presentation In this context an appropriate DAC means one that can accept sample rates of up to 96kS s and input word lengths of at least 20 bits and preferably 24 bits The greatest improvement will be achieved when using the dCS Elgar Plus 24 192 DSD DAC The Elgar Plus because of its proprietary dCS Ring DAC technology has the finest linearity of any consumer DAC currently available and is able to accept input sample rates up to 192kS s The most common use for the Purcell is to upsample the 16 bit 44 1kS s digital output from a CD transport or player to either 24 bit 96kS s 24 bit 192kS s or DSD We have carried out listening tests with the dCS Elgar Plus 24 192 DSD DAC using CDs manufactured from 24 96 digital masters and have found that upsampling reveals information that is present in the master source but which is not audible when the CD is played back normally Upsampling cannot increase the amount of information in a signal and the exact mechanism behind the perceived sonic improvements is currently no
82. psampling to 24 192 Dual AES Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Connecting the 1394 Interface Units fitted with an IEEE 1394 interface can output DSD data which can be decoded by a 1394 equipped dCS Elgar plus or Delius DAG Check that your DAC is capable of DSD operation over an IEEE 1394 link Set the DAC to 1394 mode first If you have set the output to DSD connect ONE of the 1394 connectors on the Purcell rear panel to the DAC using the IEEE 1394 cable supplied Also connect Purcell s Wordclock OUT to Wordclock In on the DAC Use the DAC s Input button to select the 1394 input The 1394 interfaces will sync up this may take 30 seconds During this period Purcell may display Active and Inactive messages finally setting down to 44 1 gt 3DSD or similar The DAC may display Wait followed by other messages before finally settling down to Purcell DIGITAL OUT WORD CLK IN CNL Hand Crafted by o e The Red Hot CD Player Co N 16 bits 44 1kS s dm mmm mmm mmm ST A B exe BNC TOSLINK IN OUT OA OQ O Balanced _ or Unbalanced Outputs Outputs To Power Amplifier or Preamplifier Figure 3 Upsampling to DSD using an IEEE 1394 interface IMPORTANT Do not connect both of Purcell s 1394 connectors to the DAC this prevent
83. quence Locking followed by d xxx detecting the base sample rate and finally the normal display e When accessing the Function Menu see page 20 menu options are displayed here e If an error occurs during power up or normal use the details of the fault will be displayed See Fault Indication on page 72 Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Input Mode Indicator This bank of indicators shows which digital input is selected When the Out Mode menu page is set to Dual AES the DUAL indicator lights up When the WCIk menu page is set to WCIk In and Purcell is slaved to its Wordclock Input the WCLK indicator lights up Function Button Select Press the Function button to open the Function Menu see page 20 and change or JARS settings in the menu Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd Rear Panel August 2005 Key to Rear Panel Figure 9 dCS Purcell Rear Panel AES EBU digital input on XLR female connector Qo A SPDIF digital inputs on RCA amp BNC connectors L Spare location M SPDIF optical input on Toslink connector N Spare locations for future enhancements O Wordclock digital Input P Wordclock
84. quipment to the SUC connector as this may damage both Purcell and the equipment so connected Do not operate Purcell with a PC connected Failure to observe this warning will void the unit s warranty and may cause unpleasant effects in your system The Power switch completely isolates the unit from the power supply In normal use set it to the On position I Set it to Off 0 during electrical storms or while you are away for a long period Use with a 3 pin IEC type power cable Mains Fuse Replace only with a 20 x 5mm 500mA T HRC fuse Please see page 66 for replacement details Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Additional Information The rear panel displays the following information about the unit The manufacturer s name and address Supply voltage setting frequency range and rated power Model dCS Purcell The short form of the unit serial number We will need the serial number preferably the full serial number from the menu to give you support over the phone or to ship you software updates Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual dCs Ltd Remote Control Manual for Software Issue 2 3x August 2005 The Remote Control unit is supplied with all
85. r it may cease to go down any more and just stay at a constant level From the audio viewpoint this sounds very unpleasant As a Signal tail decays away the tonal quality changes and then it decays into distorted mush and either abruptly stops or else keeps fuzzing away until a new signal starts The level at which all this happens is the Isb of the output word for CDs it is at the 16 bit level which equates to about 90dBO The level is high enough to be quite audible and the effect must be tackled to make reasonable quality CDs There is really only one way of tackling the problem another signal has to be added to the wanted one to smooth the staircase transfer function that truncation causes Mathematically with two signals present the transfer function the wanted signal sees is the convolution of the PDF of the second signal and the staircase function The converse is also true the transfer function the additional signal sees is the convolution of the PDF of the wanted signal and the staircase function This aspect is not a problem with the dither types considered below but it can be with some highly frequency shaped dithers The additional signal is usually referred to as dither and it is usually noise like because then its statistics can be controlled and the converse effect of the signal modulating the dither can be made insignificant or zero However there are a number of ways that this dither signal can be generate
86. r up routine Note that the Power button will not click when turning power on this is normal When you have finished listening press the Power button briefly to set the unit to standby mode The outputs will mute all displays will turn off except the PWR and STBY indicators In this mode Purcell uses less power but stays warm If power is switched off or fails Standby mode is cancelled To restore normal operation press the Power button briefly again The STBY indicator will turn off and Purcell will power up ready for use To switch off completely press the Power button and hold it for a few seconds until the Main Display shows Power Dn then release it SS oll Bach The Input button controls which digital input is selected as shown by the Input Mode Indicator Press the Input button repeatedly until the required input is shown on the Input Mode indicator The choices for a standard Purcell are AES XLR RCA Toslink or BNC An IEEE 1394 interface is available as an option Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 The Input button doubles as the Menu GREIN button used for paging backwards through the Function Menu see page 20 Output Button Step Press the Output button to select the output sample rate The available output sample rates are 32 44
87. re Issue 2 3x dCs Ltd August 2005 N Shape Noise Shaping The unit can be used to noise shape signals where the wordlength is being truncated set to less than 24 bits Open the Menu and step through until the display shows N Shape Press the GE button once Assuming for this example that Noise Shaping is currently switched off the display will change to Off Press the Select button slowly five times The display will show in turn lst 3rd 9th Auto and finally Off Choose the setting you want and wait for the Menu to time out The NS indicator in the status indicator block lights when Noise Shaping is set to lst 3rd or 9th It also lights when Noise Shaping is set to Auto with Out Word set to less than 24 bits In Auto mode Noise Shaping is applied as follows Out Word 23 24 bits 21 22 bits 17 20 bits 16 bits Table 2 Auto Noise Shaping settings It is generally best to leave Noise Shaping set to Auto as this will always give a sensible setting Otherwise consult Table 1 for the appropriate setting For more information about Noise Shaping please see Wordlength Reduction on page 52 Note that for 176 4 or 192kS s output sample rates the Out Word setting cannot be changed from 24 bits so Noise Shaping is disabled Dither The unit can add Dither to the signal if necessary and has several dither options We recommend you only add Dither if it is really necessary it inevitably d
88. s the IEEE 1394 interfaces synchronising Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Step 4 Reducing the Output Wordlength IMPORTANT Other Settings If you are using Cloning or DSD output mode or the output sample rate is set to 176 4 or 192 kS s the Output Wordlength cannot be changed so proceed to Other Settings Purcell generates 24 bit data regardless of the input word length If your DAC cannot handle 24 bit data the Output Wordlength MUST be set to match Noise Shaping and or Dither MUST be applied to smooth the transitions If the extra bits are just ignored the audio outputs may sound grainy and unpleasant low level effects will result For more information see Wordlength Reduction on page 52 Check the maximum input wordlength specification in the manual for the DAC You must set Purcell to match this Open the Menu and press the Output button once so the display shows Out Word Use the Select button to set this page to match the number of bits your DAG can handle While the menu is still open press the Output button again to scroll to the N Shape page Noise Shape Use the Select button to set this to Auto While the menu is still open press the Output button again to scroll to the Dither page If the Out Word setting is 16 or 18 bits use the Select b
89. s this setting cannot be changed 24 bits output wordlength is selected automatically Open the Menu and step through until the display shows Out Word Press the SIDEN button once Assuming for this example that the current Out Word setting is 24 bits the display will change to Out 24 Press the Sak button slowly five times and the display will show in turn Out 22 Out 20 Out 18 Out 16 and finally Out 24 Choose the setting that matches your DAG The unit stores two wordlength settings the last one used when upsampling and the last one used when downsampling These settings are automatically applied when you change between upsampling and downsampling to help avoid mistakes If Out Word is set to less than 24 bits the 24bit indicator in the status indicator block will turn off This warns that you need to set Purcell to apply some Noise Shaping and or Dither to smooth out the response Use Table 1 below to determine the appropriate Noise Shaping and Dither settings for the Output Wordlength that you have selected Out Word Dither 24 bits Off 22 bits Triangle 20 bits Triangle 18 bits N Tri 16 bits N Tri Table 1 Recommended Output Wordlength Noise Shaping and Dither Settings For more information please see Wordlength Reduction on page 52 Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Softwa
90. sage rrnrrrnnnnnnnnnnnnnnen 31 positioning the unt 63 Power DUWO au 4545 sees 34 JOE GE 39 power interruption rrrrnnnnnnrrnnnnrnnnnnnnvnnnnnne 72 Power Link Connector rrrrrnnrrerrnnrrrrvnnnnnen 39 power Of 34 DOWEL EE 34 power requirements rrrrrnnrrrrrnnnrevvnnrrennnnnr 48 power Switch 39 power up failure rrrrnnnnrrrnnnrrrrnnnrenrnnnrennnnnr 73 PowerDn message 34 72 DOWENNG UP WE 10 programmable logic cccccsseeeeeeeeeeeeeeeeeeens 3 pull iN FANGE EEN 47 Purcell button remote 41 Purcell LED remote EE 41 Purcell MUSIC e VE 5 PY PUlnGiCalOr EE 35 R RCO Reie 58 RCA SOUL sou ee EE 37 FGA GUDU t Eeer 38 rear PAN add 37 remote Control 41 67 74 80 remote control codes cccceseeeeeeeeeaeeeeeees 58 remote control option ccceeseeeeeeeeeeeeeees 64 remote control SENSOF ceeseeceeeeeees 35 74 remote control batteries rrrrrrnnrrrrrrrnnnrnr 74 remote control replacing batteries 67 remote control USING csecceceeeeeceeeeeeeeees 41 resetting to factory staie 32 Revert to Slave message nnoennneannnn 25 RINO DAG sinnc 3 Kall 20 PET 45 S SE IN KE EE ete eee 62 safety eelerer eer 70 sample bk ur 47 email support dcsltd co uk web site www dcsitd co uk dCS Purcell User Manual dCs Ltd sample rate 3 9 37 38 45 51 73 74 75 81 sample rate CHANGES rrrrnnnnrnnnnnnrvnr
91. sample rate is 88 2 or 96kS s setting Dual AES mode formats the data as two 44 1 or 48kS s data streams on the AES 1 and AES 2 outputs Dual AES mode is automatically selected if the output sample rate is 176 4 or 192kS s The DUAL indicator in the Input Indicator block lights when Dual AES is selected Do not use the RCA BNC or 1394 outputs in this mode Setting the Output Mode Open the Menu and step through until the display shows Out Mode Press the GEYER button Assuming for the purpose of this illustration the Output Mode is set to Single and the input sample rate is 96kS s the display will change to Single Press the Bad button slowly twice The display will cycle through Dual AES and Single Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd IMPORTANT August 2005 Set the required mode Wait for the Menu to time out and the display to revert to its normal mode When the Output Mode is set to Dual AES the data output from the RCA BNC and 1394 digital outputs is not valid and should not be used Cloning Bit for Bit Mode When in Cloning Mode Purcell passes through the input data bit for bit with no changes This allows HDCD coded data to pass through unchanged and be decoded by your DAC Dither Noise Shaping and Wordlength truncation are disabled when Cloning Cloning mode is onl
92. ssThru Decodes the Emphasis message and passes it through to the outputs correctly encoded for AES and SPDIF outputs Handle Decodes the Emphasis message performs De Emphasis to either the 50 15us or CCITT J17 standard as necessary and outputs a No Emphasis message If the output sample rate is set to 176 4 or 192kS s no De Emphasis is performed and the Emphasis message is stripped Handle is the usual setting If the incoming Emphasis flag is incorrect and the setting is Handle the wrong De Emphasis curve will be applied If the tonal balance sounds wrong set the De Emph page to Strip and correct the response at the DAC Open the Menu and step through until the display shows DeEmph Press the FAEN button slowly three times Assuming for this example that the unit is currently set to Strip the display will cycle through Passihru Handle and Strip again Set as required and wait the menu to time out TimeOut Menu Time Out Setting If you find the 5 second time out period for the menu is too short use this option to change the time out period to 30 seconds Open the Menu and step through until the display shows Timeout Press the button once and the display will show Normal Press the Glo button again and the display will change to Long Repeat this if you want to change back Ch Check Channel Check Test Use this feature to check if the stereo outputs on your system are swapped It is disabled when in DSD SAC
93. sue 2 3x dCs Ltd August 2005 Manual filename Purcell Manual v2 3x doc Page 61 email support dcsitd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 USING YOUR dCS PURCELL FOR THE FIRST TIME Thank you for purchasing this dCS Purcell Before attempting to use your Purcell please read at least the rest of this section and the Step by Step Guide on page 10 This will enable you to set the unit up quickly with your hi fi system What s in the Box Safety Notice IMPORTANT The box should contain the following dCS Purcell User Manual Control Summary Power Cable Spare Fuses 2 Units supplied with a Remote Control all models except Verona and Purcell should also be supplied with the following e Remote Control unit e 3 x AAA batteries e Pozidriv screwdriver 1 pt For safety reasons the Remote Control is shipped with the batteries packed separately For fitting details see the Maintenance and Support section starting on page 66 Units fitted with an IEEE 1394 interface should also be supplied with the following e IEEE 1394 cable assembly e BNC cable Check the contents of the inner carton very carefully against the list above Notify your dealer as soon as possible if anything is missing or damaged dCS suggest that all of the original packaging is retained for use when transporting any units Replacement packagin
94. t dcsltd co uk English version web site www dcsitd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 IEEE 1394 Type High speed multi channel Data format dCS encrypted DSD Connectors 6 way 2 Table 7 IEEE 1394 Interface Electrical Characteristics Sample Rates e 32 44 1 48 88 2 or 96kS s on single wire interfaces and Wordclock interface auto selected Optical inputs are not guaranteed at 88 2kS s and 96kS s e 88 2 96 176 4 or 192kS s on Dual AES interface auto selected e 2 822MS s for DSD on IEEE 1394 interface use with a 44 1kHz wordclock Frequency Response DDC mode The cut off frequency of the converted digital data stream depends on the lowest of the two sample rates involved in the conversion Roll off starts just below half the lowest sample rate The low frequency response extends to below 10Hz limited by a DC filter Figure 11 shows the Filter frequency response curves for converting a 44 1kS s source to 44 1 48 88 2 96 176 4 and 192kS s Note that signal frequencies higher than 22 05kHz are not defined Filter 1 Response for Conversions from 44 1kS s Level dB 10 12 14 16 18 20 22 Frequency kHz Figure 11 Filter 1 Response Curves for Conversions from 44 1kS s The IEEE 1394 interface is optional on some models Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk
95. t entirely clear We are continuing our research into this subject Units fitted with the IEEE 1394 interface can upsample the source data to DSD format a single bit data stream sampled at 2 822MS s for conversion to extra wide band audio by adCS Elgar Plus or Delius DAC Purcell uses the same digital processing engine running the same DSP code as the dCS 972 974 and they are sonically identical The extensive use of programmable logic makes the Purcell extremely flexible and easy to upgrade Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsitd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 HENRY PURCELL 1659 1695 The dCS Purcell is named after the 17th century English composer organist bass and countertenor Henry Purcell He is widely regarded as one of the greatest composers of the baroque period and some even regard him as the most gifted English musician and composer of all time During his short 35 years he composed in every musical genre of the period Born in London he was a child prodigy and began writing music at the age of eight He started his career as a boy chorister at the Chapel Royal In 1673 he became an unpaid apprentice to John Hingeston Keeper of the Royal Instrument where he acquired considerable experience in tuning the organ at Westminster Abbey He was able to provide himself with an income during his apprent
96. t to Filter 1 Open the Function Menu and step through until the display shows Filter 1 Press the GES button slowly several times The display will in turn show Filter 2 Filter 3 and finally Filter 1 again There is a slight delay whilst the unit changes filter during which it will not respond to further button presses Selecting the most appropriate filter is simply a matter of flipping through the options as you play a CD and choosing the one that you think sounds best Try listening for changes in imaging ambience and low level information bass definition and vocal clarity Select the filter you prefer then wait for the Function Menu to time out and the display to revert to its normal mode Transmit Activating the 1394 Outputs 3 At present the IEEE 1394 interface supports up to eight active DSD sources at any time If more are connected to the bus no more than eight may be active This situation will improve as industry standards stabilise The Iransmit page allows Purcell to be left in DSD SACD output mode but with the 1394 interface inactive With most set ups you will not have to worry about this setting Set up the unit in DSD SACD mode with the 1394 interface connected to at least one other unit Open the Menu and step through until the display shows Transmit Press the Select button to flip between Active and Inactive When you have the option you want wait for the Menu to time out and the display to revert
97. tact your dealer for details Hardware Updates You may wish to have your hardware updated from time to time to take advantage of new features in the latest software dCS offer this service we will retest reset any adjustable items to current shipping standards and install any modifications or updates that have occurred since your unit was first shipped The price will depend on the hardware changes necessary please contact your dealer or dCS for details and pricing In order to ensure speedy turn around please contact us prior to returning the unit to get a Service Return number Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Safety and Electrical Safety There are no user serviceable parts inside Purcell and so there is no need to remove the covers If for some reason you do IMPORTANT Disconnect the power cable before removing any covers or changing the fuse There are no substances hazardous to health inside Purcell Cleaning the Case Do not apply any of the following cleaning products to the case as they will damage or alter the finish e Corrosive or abrasive agents e Spirit or alcohol based cleaners e Wax polish To remove dust wipe with a moist soft cloth To remove deposits from the case first disconnect the power cable then spray very lightly with a proprietary g
98. ter 16 10 up 17 11 down 26 1A Function 27 1B Input 32 20 32kS s out 33 21 44 1kS s out 34 22 48kS s out 35 23 88 2kS s out 36 24 96kS s out 37 25 176 4kS s out 38 26 192kS s out 39 27 DSD 1394 out 41 29 Standby ON 42 2A Standby OFF 43 2B Power OFF 44 2C Filter 1 45 2D Filter 2 46 2E Filter 3 47 2F Filter 4 Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual dCs Ltd DACs For all DACs the category code is 13 decimal Manual for Software Issue 2 3x August 2005 These DAC codes up to decimal 27 are in use on the Elgar Plus Delius Remote v2 0 Transport Remote v2 0 and Elgar Remote v1 0 Elgar Plus v4 20 or later and Delius v2 20 or later will respond to codes over decimal 27 Button or Function Code Hexadecimal Decimal CA N Manual filename Purcell Manual v2 3x doc English version 01 02 03 04 05 06 07 08 09 0C OD OE OF 10 11 1A 1B 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D ZE 2F 30 31 32 33 Elgar Plus Delius Elgar RC function RC button RCA1 Coax1 Opt2 AES1 AES1 AES2 AES2 Opt1 BNC Coax2 Display Display Vol Bal Vol Bal Phase Phase Standby Standby Mute Mute Filter Filter RCA2 up up down down Function Input Input Dual AES SDIF 1394 CH 0 1394 CH 1 1394 CH 2 x 1394 CH 3 1394 CH 4 Mute On Mute Off Standby On Standby
99. ter or slave mode we recommend master mode If you are using a Purcell in Dual AES mode rather than DSD mode you should set the DAC s Dual AES menu page to either Lock or Auto The DAC has enough information about the system set up to report connection and setting errors These are Verdi Wordclock Missing Please Check Source Slaved to Delius Elgar Plus Wordclock Out Missing Wordclock between ClkOut and Verdi Clk In Wrong Fs Verdi Clk In Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 dCS IR Remote Control Codes This section gives details of the Remote Control codes generated by dCS IR Remote Control units for use with programmable remote controls All dCS Remote Control units use the RC5 system and a carrier frequency of 37 9kHz For more information on the use of dCS Remote Control units please refer to the manual for that unit IMPORTANT Please note that dCS cannot accept responsibility for any difficulties experienced with other manufacturer s remote control units Upsampler For Purcell the category code is 29 decimal These Upsampler codes are in use on the Elgar Plus Delius Remote v2 0 and Transport Remote v2 0 Button Code Purcell Decimal Hexadecimal RC button 1 01 RCA1 RCA2 3 03 AES1 AES2 6 06 BNC 7 07 Display 12 OG Standby 14 OE Fil
100. th dCS Elgar Plus and Delius will also operate Purcell If you do not have a dCS DAG the Remote Control is available through your dealer distributor See Remote Control page 41 Mains Supply Voltage Any unit may be set for operation from 230 240V 215 220V 200V 115 120V or 100V A C Units are shipped set for the mains supply voltage according to the destination The voltage setting can be updated later by your dealer if necessary Specify the new country of use or the new voltage setting Having Your Options Changed dCS support modifications updates and option changes to supplied units Major changes are normally carried out at dCS as we have extensive test facilities and can verify the changes Please contact your dealer distributor or dCS for details IMPORTANT Please do not attempt the changes yourself The unit s performance or reliability may be impaired and the warranty will be invalidated Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Manual filename Purcell Manual v2 3x doc Page 65 email support dcsitd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 MAINTENANCE AND SUPPORT Service amp Maintenance Obtaining Service Mains Fuse IMPORTANT dCS audio products are designed
101. the display shows Press the BE button once to start the burn in routine Purcell will show the warning messages Caution and Loud in the main display for 20 seconds and then the burn in signal will ramp up from zero to maximum level over a period of about 10 seconds The display cycles through Burn in Caution and Loud while the Burn In routine is running To stop the Burn in signal press either a Blad or BIZ button once The display will briefly show This runs a test routine to ensure the display is working correctly Open the Menu and step through until the display shows Test Press the SIN button once to start the test e The main display lights up then fades from bottom to top e The indicator LEDs light up briefly in sequence e All indicators light up along with small squares on the main display This flashes off and on once e The display shows Done Issue Software Issue State This displays the issue number of the software fitted to your unit You will need to check this if you are considering a software upgrade or if your unit malfunctions Open the Menu and step through until the display shows Issue Press the Eta button once to display the software issue Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 For units fitted with a 1394 interface press the REI
102. the optional IEEE 1394 interface NonClone must be set DSD data will be available from the 1394 outputs Do not use the other outputs Bit for Bit Operation If you need bit for bit operation for example to pass through HDCD data unchanged you must first use the Output button to set the Output Sample Rate to be the same as the Input sample Rate for example 44 1 44 1 Press the Function button once to open the menu then press the Output button repeatedly until the display shows NonClone or Cloning If necessary use the button to set this to Cloning Setting the Output mode This setting determines whether conversions to 88 2 or 96kS s are output as Single AES or Dual AES Open the Menu and press the Output button repeatedly until Out Mode is displayed Select the mode you want e Single The Output Sample Rate must not be higher than 96kS s Single wire data will be available on all of the AES 1 AES 2 RCA and BNC outpuis e Dual AES The Output Sample Rate must be 88 2 96 176 4 or 192kS s Dual AES data will be available on the AES 1 AES 2 output pair Do not use the other outputs Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Step 3 Connecting the Digital Outputs Choose one of the following three sections Connecting a Single AES or SPDIF Output If the Output Sample
103. to its normal mode A minor software update may change the order of the menu items or add an option If this happens the Control Summary sheet may be updated before the manual Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 1394 ID 1394 Source Identification This page sets a number between 1 and 8 to identify each Purcell you have connected to the 1394 system Open the Menu and step through until the display shows 1394ID x where x is a number between 0 and 8 Press the BE button repeatedly allowing the unit to settle for a few seconds each time The display cycles through 13941D 0 13941D 1 18941D 7 13941D 8 and back to 1394 1D 0 If you set 394 D 2 for example when the DAC is selected to this Purcell it will display Purcell 2 You can set any other Purcells connected to the 1394 system to a different number If you set 1394 1D 0 the DAC displays Purcell without a number Out Word Output Wordlength IMPORTANT The Output Wordlength should be set to match the maximum wordlength that the DAC you are using can accept If you are not sure what this is please consult the manufacturer or your dealer For the dCS Elgar Plus or Delius this is 24 bits Purcell will work best with DACs that can accept 24 bits Note that for 176 4 or 192kS s output sample rate
104. tput Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Erratic operation when locked to 96 or 88 2kS s on Toslink or ST inputs e The Toslink and ST receiver devices are industry standard types which are not guaranteed to operate correctly at 96 or 88 2kS s Connect to a different input instead The DAC locks but noise is received e If the source is a CD or DVD player check that the disc is a CD or DVD and NOT a CD ROM or other type of data disc e Switch off the DAC wait 30 seconds then switch it on again e Check for faulty cables The DAC fails to lock to Purcell s output at 88 2 or 96kS s e Check that the DAC is capable of locking to these sample rates and that it is appropriately set up Consult the manufacturer or your dealer if necessary e Check that the appropriate inputs have been selected on the DAC e Check whether the DAC uses a single wire or two wire Dual AES interface at these sample rates and then set Purcells Output Mode accordingly If a two wire interface is used check that both the AES 1 and AES 2 digital outputs have been connected to the DAC e Check that the digital cable or cables has been fully plugged in at both ends e Try a different cable if possible e Try setting Purcell to an output sample rate of 44 1KS s and see if the DAC locks to single wire data Now tr
105. ual Manual for Software Issue 2 3x dCs Ltd August 2005 Troubleshooting the IEEE 1394 Interface This section covers difficulties that may be encountered using a dCS Verdi SACD Transport v1 20 or later a dCS Verdi La Scala Upsampling SACD Transport or a dCS Purcell Upsampler to drive a dCS Elgar Plus DAC v4 20 or later or Delius DAC v2 20 or later with DSD data over an IEEE 1394 interface Upsampler or Transport displays Inactive e This can happen momentarily during locking If it does not change to Active open the Transport or Upsampler s menu and ensure the Iransmit page is set to Active The Unit keeps displaying No Comms e This will appear briefly while the 1394 system is checking for connections e lf the No Comms message does not clear ensure that all units in the 1394 chain are switched on and securely connected by 1394 cables The Unit keeps displaying Search e This will appear briefly after the 1394 system has established communications e lf the Search message does not clear ensure that you have not connected both 1394 connectors from one unit to both 1394 connectors on another unit or set up a loop This prevents the 1394 bus settling e Check that the 1394 cables are correctly fitted The DAC displays Verdi Wordclock Missing e With the DAC in slave mode check there is an undamaged BNC cable connecting Verdi s WCIk Out to the DAC s WCIk In e Ensure the cable is D C coupled A C coupled
106. uld give if it were well behaved which it is not Straight forward dither always adds noise it can only produce signals with a noise floor higher than Q noise on its own However the noise power added is a few dBs for simple types Noise shaping adds rather more noise but it can be made to add it in parts of the spectrum that the ear is less sensitive to so the perceived noise F weighted noise is lower up to three bits lower It results in a signal that the ear hears as having a far lower noise floor than a 16 bit truncated signal rather than the not much worse of dither alone even though there is really more noise present Truncation Type with Noise Noise Comments 44 1kS s data rate unweighted F weighted rel 16 bitQ rel16 bit Q noise noise 16 bit truncation Unpleasant low level effects 3 dB 3 dB Okay can show noise modulation at low signal levels 16 bit truncation with 4 8 dB 4 8 dB All noise Triangular dither modulation and unpleasant effects removed but noise 16 bit truncation with Top Hat dither floor is high 16 bit truncation with 4 8 dB 1 2 dB All noise Noise Shaped modulation and Triangular dither unpleasant effects removed Not much perceived noise penalty 16 bit truncation with 2 6 2 dB 10 4 dB Okay with input order noise shaping and noise floors down no dither to 102 dB 16 bit truncation with 2 11 0 dB 9 2 dB Unconditionally free order
107. unit will lock to the transport then display Wait If you are updating a dCS Transport the Transport plays the CD and updates itself missing out some of the early steps Disconnect any 1394 interface cables For all dCS units RELAX The update procedure is easy Mute your power amplifier Insert a dCS CD containing software for the unit you want to update into the transport making sure it is in STOP mode Open the Menu on the unit to be updated and step through until the display shows CDUpdate Press the button to start the routine The unit will display Wait while it prepares the flash memory for the update After 3 4 minutes the unit will scroll Please Start CD Press PLAY Do not press PLAY before the unit to be updated is ready This can cause the download to fail Use only dCS CDs The unit will now inspect the CD and will display Scanning while it reads administrative data If there is anything wrong with the dCS CD that has been loaded or it does not match the product the unit will display Wrong or Wrong CD or No Index and revert to normal operation Don t worry the internal software is unchanged Check the CD for dust or scratches If it is not a dCS CD at all the unit will keep repeating Please Start CD for about 30 seconds or display Wrong CD and then revert to normal operation If the data is correct the unit will display Track n where n is a number You can move the Transport on to track n
108. utton to set this to N ri Otherwise set it to Off The basic set up procedure is complete Many more features are available through the Function Menu See the Function Menu section starting on page 20 for more information Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 TYPICAL APPLICATIONS Using a 1394 Equipped Purcell with Verdi and Elgar Plus This setup allows you to play SACDs and CDs through the 1394 interface upsampling the CDs to DSD with the Purcell The Elgar Plus is in Master Mode dCS Verdi SACD Transport CAUTION VISIBLE AND INVISIBLE CLASS 1 LASER RADIATION WHEN OPEN LASER PRODUCT DO NOT STARE INTO BEAM XLR BNC 1394 cable cable cable dCS Purcell Upsampler DIGITAL INPUTS WORDCLOCK 3 TAL OUTPUTS cs OUTPUTS a SEA K s S J up CECR SOO i I S O Os Geh RI XLR A phono cables H cables Balanced or Unbalanced Outputs Outputs To Power Amplifier or Preamplifier Figure 4 Using Elgar Plus in Master Mode with a 1394 Purcell and Verdi Connect up as shown above Open Elgar Plus and Purcell s menu and run the Factory routines Purcell set up Use the Input button to select the AES 1 input Use the Output button to select 44 1 DSD Elgar Plus set up Use the Input button to select the 1394 input and wait for the unit to settle
109. ve signal level or ratio in decibels The context may indicate the reference level dBO Level in decibels referred to a full scale sine wave in a sampled system So OdBO is full scale dBu A signal level relative to 0 775V rms making no allowance for external loading DDC Digital to Digital Converter sometimes referred to as a D D Converter DSD Direct Stream Digital a single bit digital audio format sampled at 2 822MS s kS s Sample rate in kilo samples per second This replaces kHz which is technically incorrect when referring to sample rates SDIF 2 Sony Digital InterFace a stereo digital audio format consisting of 2 serial PCM or DSD data lines Usually used with a Word Clock SPDIF sony Philips Digital InterFace a stereo digital audio format for consumer equipment consisting of one serial PCM data line Similar to AES3 but unbalanced and with different messaging Word Clock A synchronisation signal consisting of a square wave the frequency of which is the sample rate Usually transmitted through co axial cable and BNC connectors Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Key to Cable Identification If you are reading a colour print or a soft copy of this manual cable types shown in figures can be identified from Table 16 Cable Type Colour Style XL
110. x differs from 1 2x versions in supporting DSD at 2 822MS s over the optional IEEE 1394 interface Upgrader s note units manufactured before April 2001 will require a hardware update to support these extra features Version 1 25 adds support for a Toslink input Wordclock In amp Out Upgrader s note units manufactured earlier than February 2001 will require a hardware update to support these extra features Version 1 23 adds support for the front panel Power button The differences between versions 1 22 and 1 20 are minor bug fixes and hardware compatibility updates The main differences between versions 1 20 and 1 1x are 3 downsampling combinations added support for the infra red Remote Control Auto Noise Shaping option added Bit for bit Clone mode added De Emphasis added Long Time Out option added and Message handling improved Manual filename Purcell Manual v2 3x doc email support dcsltd co uk English version web site www dcsltd co uk dCS Purcell User Manual Manual for Software Issue 2 3x dCs Ltd August 2005 Definitions and Abbreviations ADC Analogue to Digital Converter sometimes referred to as an A D Converter AES3 A standard professional stereo digital audio format consisting of one serial PCM data line It uses a balanced cable to extend transmission distance and includes a comprehensive messaging system DAC Digital to Analogue Converter sometimes referred to as a D A Converter dB A relati
111. y certificate in the mail from dCS within 30 days of your purchase contact dCs Registration also ensures you will receive information on important hardware and software upgrades as they become available For products not registered with dCS the 1 year warranty period commences on the date the product was originally shipped from the dCS factory If you sell this product within the warranty period the balance of the warranty will remain in effect for subsequent owners What This Warranty Does Not Cover This warranty does not cover products with missing or altered serial number products originally purchased from other than an authorised dCS reseller or problems that result from e External causes such as accident abuse misuse or problems with electrical power e Unauthorised modifications e Use not in accordance with the operating conditions and instructions stated in the user manual e Service or repair by anyone other than an authorised dCS Distributor e Product operation on voltage outside a range of the voltage specified on the back panel plus or minus 10 or without a proper ground connection e Transport in inadequate packing e Problems caused by using accessories parts or components not supplied by dCs e Master Clock accuracy is not guaranteed 12 months after shipping from dCs This warranty does not cover carriage costs How To Obtain Service Should you encounter a problem please check the Troublesh
112. y possible if the input and output sample rates are the same as any digital processing changes the data Cloning is disabled and the Cloning page disappears from the Menu if either sample rate is changed so they no longer match If the sample rates are changed so that they match again the Cloning page reappears set as before Open the Menu and step through until the display shows NonClone or Cloning Press the SITE button to switch between these two options When you have the option you want wait for the Menu to time out and the display to revert to its normal mode In Word Displaying the Input Wordlength This feature allows the user to confirm the number of active bits in the input signal For this function to operate the unit must be locked to a digital source that is carrying PCM audio data i e music or speech otherwise 0 bits is displayed Open the Menu and step through until the display shows In Word Press the Sta button once Assuming for the purpose of this illustration that Purcell is locked to a source with 16 active bits in the input signal the display will change to 16 bits Wait for the Menu to time out Disp Default Display This feature allows you to choose what Purcell displays when music is playing Open the Function Menu and step through until you come to the Disp page Press the GEYER button repeatedly and the display will cycle through the following Disp In The display reverts to input sample rate
113. y using successively higher output sample rates until you get to 96kS s Try 88 2 and 96kS s with the Output Mode set to both Single and Dual AES If the DAC locks to 44 1 and 48kS s but not to 88 2 or 96kKS s it may not be capable of working at these higher rates The Remote Control fails to control the unit e The Remote Control is normally shipped with the batteries packed separately for safety reasons If you are using the Remote Control for the first time you must fit the batteries first see page 67 e lf the Remote Control has not been used for a long time or has gradually lost range the batteries should be replaced see page 67 e If you have just replaced the batteries but the unit still does not work check that the batteries are fitted the right way around see page 67 If two or more batteries were fitted the wrong way around the Remote Control may be permanently damaged If this occurs contact your dealer for advice e For correct operation there must be a clear line of sight between the infrared transmitter at the end of the Remote Control and the remote control sensor in the main unit located on the left hand side of the display If the line of sight is blocked for example by a coffee table the Remote Control may operate erratically or not at all e While the unit is displaying Locking or changing sample rates the system timing is fluctuating and this may temporarily disrupt the operation of the Remote Control Once the

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