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Dolby E Decoder DP572 User`s Manual

1. Metadata SH Dolby E LTC Out CH SYNC video q Sync Ce Status Status Information d Metadata with Ref Video In LCD Interface ra Metering Control VSYINC Front Panel Microcontroller gommands Interface E gt SRC AES TX Ae Y I gt Channel 1 2 DSP1 gt E LK SRC p AES TX re Remote Serial front EE lox al gt Metadata and Control p Channel 3 4 Ethernet L pal i A Dolby E gt src AES TX Lo T bitstream P AES RX DSP2 gt FM Main Input Channel 5 6 a a Jj gt SRC AES TX Ade auxiliary gt H Channel 7 8 e AES RX e Ke b AES TX 3 ls SC PCM Delay kig Output Stereo LK pac I Headphone Output Figure 4 1 DP572 block diagram 4 1 DP572 Dolby E Decoder Dolby E Multichannel Distribution System User Manual mod BuiAjdde e10jeq Huges esnj 39949 SNINNVM 2 Jl ou seuojeloqe Aqjog Jo syreurepej are il JoquiAs q eiqnop au pue qioq mo Aq DS aoc CHL 3 Aqiod Figure 4 2 DP572 front and rear panels 4 2 Dolby E Multichannel Distribution System User Manual DP572 Dolby E Decoder 4 1 1 4 1 7 Main In A Dolby E encoded signal is applied to Main In sent to an AES3 receiver then
2. Program 1 Program 1 Program 1 gt lt gt LE LFE Channel Dolby Srnd Mode Srnd Dwnmx Lev Enter Enter ke Enter Ts a tee Not boby Sma dd Not indicated i Soor cao an A o Caso di l y snd p esto 6 0 48 Program 1 Program 1 Program 1 DCFilter gt LFE Lowpass Filt gt Lowpass Filter lt 4 DC Filter DC Filter LFE Lowpass Filt LFE Lowpass Filt Lowpass Filter Lowpass Filter Disable Enable 4 Disable Enable ki Disable Program 1 Program 1 Program 1 RF Overmd Protect gt Srnd Phase Shift gt Srnd 3dB Atten Enter eso Enter fes Enter ke RF beren RF Bio ieri Srnd Lied Shift ig er iie Atlan dr cn Program 1 Program 1 Program 1 Dialogue Level Audio Prod Info Mixing Level Enter sc Esc Enter sc Dialogue et Audio Prod Info Audio ar Info iu a Range 1 to 31 dB Range 80 111 dB Program 1 Program 1 Program 1 gt Original Bitstrm Copyright RoomType Enter Jese Enter ke Enter e Original Bitstrm Original Bitstrm Copyright Copyright Room Type Room Type No gt Yes No t gt Yes
3. Range Program 1 to Program N where N number of programs in Program Config Figure 4 6 Headphone Prog menu The front panel ofthe DP572 Dolby E decoder includes a stereo headphone output from a 4 inch female connector This menu selects the headphone signal source from the four pairs of rear panel channel outputs 1 2 3 4 5 6 7 8 and PCM Delay The selectable pairs depend on the active Program Config For example channel pair 7 8 can not be monitored in a format with only six channels Change the headphone volume by pressing Shift Enter the headphone icon is below the Enter key and using the arrow keys Program 1 N Selects the Program within the Program Config to monitor through the headphone output The Headphone Map menu see below contains the allowable channel to headphone mappings for that Program 4 9 Dolby E Multichannel Distribution System User Manual DP572 Dolby E Decoder 4 2 4 4 2 5 PCM Delay Selects the PCM Input channel for headphone monitoring Headphone Map Enter Headphone Map DP572 Unit Setup Esc r Headphone Map EN L L R R Headphone Map L Ls R Rs i i This menu provides the allowable channel to headphone mappings based on the Program Headphone Map L C R C Headphone Map L LFE R LFE The mappings above are for a 5 1 channel configuration Mapping
4. Dolby E Model DP571 Encoder Model DP572 Decoder Multichannel Distribution System User Manual Issue 3 Version 1 05 Part No 91685 Dolby Laboratories Inc www dolby com United States 100 Potrero Avenue San Francisco CA 94103 4813 Telephone 415 558 0200 Facsimile 415 863 1373 United Kingdom Wootton Bassett Wiltshire SN4 8QJ England Telephone 44 1793 842100 Facsimile 44 1793 842101 WARNING Troubleshooting must be performed by trained technicians Do not attempt to service this equipment unless you are qualified to do so DISCLAIMER OF WARRANTIES Equipment manufactured by Dolby Laboratories is warranted against defects in materials and workmanship for a period of one year from the date of purchase All warranties conditions or other terms implied by statute are excluded to the fullest extent allowed by law LIMITATION OF LIABILITY It is understood and agreed that Dolby Laboratories liability whether in contract in tort under any warranty in negligence or otherwise shall not exceed the cost of repair or replacement of the defective components and under no circumstances shall Dolby Laboratories be liable for incidental special direct indirect or consequential damages including but not limited to damage to software or recorded audio or visual mate rial or loss of use revenue or profit even if Dolby Laboratories or its agents have been advised orally or in writing of the possibility of such d
5. Chapter 3 DP571 Dolby E Encoder 1 eee 3 1 Chapter 4 31 Hardware le EE 3 1 Sl Digital piscia ege Ehe 3 3 31 2 a A a edited 3 3 3 1 3 A ote teo bec ey reo rar 3 3 A EA POM Delay Input caeso NES 3 3 Saco GE eeben ebe Ee 3 3 SE EE 3 3 JEF OINIGIEXOUE c doe oer o ATE nau o 00 3 4 S18 PEM Delay EE 3 4 A A etic Liane 3 4 SALMO E 3 5 S LAT Hee 3 5 3 2 DP571 Setup Mode Menu Reference mirar o ei EE 3 6 Sul Program Cong oe sedat QN a aaa sta d drca ewes 3 7 3 2 2 Operating Mods isa de ot n ve io e East 3 9 3 23 EE 3 12 324 Metadata Par is ali 3 13 3 2 5 e ete em tete o tec d idu 3 16 3 245 Firmware prado estu am 3 16 3 3 DP571 Status Mode Mens 3 16 DP572 Dolby E Decoder 4 1 4 Hardware ere 4 A A uiui ode me Re Rh se 4 3 4 1 2 Video WE 4 3 4 153 PCM PU E A N A lessicale 4 3 414 Remote ica 4 3 ADS tege Rete et RPT ut DA E 4 3 ge I0BASEL a Vor e a ah 4 3 4 L3 2Melddataz csse es cn een tinere na desee 4 3 ASS ED EOM MEM DuC IA M EM ed 4 4 21 95 Digita OUI DUIS cos ete epe Ui ea halt eec esp ema ge dat 4 5 4 119 PCEM Delay Output co est ope e NUS 4 5 Z LLL CTE UU aire tied eios f pra 4 5 iv 4 2 DP572 Setup Mode Menu Reference 4 6 4 2 4 Operating Modesti etis is 4 7 23 2 25 PCM Chan Config e eset de ee eere fit eg qup pita 4 8 4 2 3 Headphone Pro use ti 4 9 4 24 Headphone Map ote ae e nee ee 4 10 4 2 5 BEE 4 10 4 2 6 Firmware ue eter vati Peer tp t abl eae 4 11 43 DP
6. While the DP572 receives PCM input no metadata is output While the DP572 receives PCM input a default set of metadata parameters more appropriate for two channel audio is sent instead of the Dolby E stream s metadata 4 7 Dolby E Multichannel Distribution System User Manual DP572 Dolby E Decoder Bypass Latency This feature is only relevant if PCM Bypass mode is enabled 1 Frame Maintains a one frame delay Minimal The PCM Bypass audio undergoes the minimum propagation delay from Main In to PCM Out 4 2 2 PCM Chan Config Enter DP572 Unit Setup Esc PCM Chan Config m gt PCM Chan Config L gt Output Routing PCM Chan Config PCM Chan Config PCM Chan Config Voiceover Mode Voiceover Atten gt Delay SRC lt enter Jes enter les Enter Jes Enter Jes Output Routing External Ctrl A v Output Routing Switched Out Voiceover Mode Voiceover Atten Delay SRC Mono 10 dB Normal Range 6 to 31 dB Voiceover Mode Delay SRC Stereo Bypass A v Output Routing Voiceover Output Routing d Delay Out Figure 4 5 PCM Chan Config menu Output Routing Switched Out Voiceover Delay Out External Ctrl Replaces the Program 1 audio with the PCM input The PCM Dly Output is muted Switching is accomp
7. Video Reference An analog composite video reference signal is required for Dolby E encoding and decoding Versions 1 05 and later support two frame rates 29 97 Hz NTSC and 25 Hz PAL VITC information can be extracted from the video reference signal sent to the DP571 for more information see Time Code Input on page 3 9 If the video reference signal is not present or invalid the e DP571 will not encode a Dolby E bitstream e DP572 will stop decoding the Dolby E bitstream e Dolby E output on the encoder and the PCM outputs on the decoder will be muted VRef LED will be red if not present or yellow Vref unequal to frame rate Channel Configuration Because neither the DP571 nor DP572 permit internal remapping ofthe audio channels the following channel configuration must be used to input a 5 1 channel signal to the DP571 L R Digital Inputs 1 2 C LFE Digital Inputs 3 4 Ls Rs Digital Inputs 5 6 Dolby E Multichannel Distribution System User Manual Introduction 1 7 Configuring Jumper Settings Although the DP571 encoder and DP572 decoder will function correctly with no internal adjustments five jumpers provide additional termination options Any necessary changes to the jumpers should be made before the units are installed There are 124 2 terminations on both units for the RS 485 Metadata and Remote control ports The units ship with these terminations bypassed pins 3 and 4 Refer to the t
8. Press the key until Operating Mode Metadata Revert is displayed then press Enter Use the J T keys to select Metadata Revert Last Used and press Enter Press Esc to return to the Operating Mode Metadata Revert screen Use the arrow keys to display the Operating Mode Metadata Source screen and press Enter Use the arrow keys to select Metadata Source Internal and press Enter Selecting the Program Configuration automatically sets the associated Dolby Digital metadata parameters for that program but they can be modified under the DP571 Unit Setup Metadata Params menu See Section 3 2 4 Metadata Params 10 Return to the status screen by pressing Shift Setup 11 The DP571 is now set properly 12 Headphone level can be accessed by pressing Shift Enter the headphone icon is below the Enter key and adjusted with the arrow keys Other than Headphone Mapping and Level and Voiceover the DP572 has very few set up parameters that require user attention because it is almost completely config ured by the DP571 13 Like the DP571 pressing Shift Setup returns the DP572 to the main Status Screen The display on both units should now show Dolby E 5 142 20bit Both units are ready for testing Example In 5 1 2 mode Program One is 5 1 channel and Program Two is 2 channel Each of these programs has its own Dolby Digital Metadata Similar to a DP569 Dolby Digital encoder a unit placed into 5 1 channel mode
9. 3 2L automatically loads a table of metadata values In 5 1 channel mode acmod is set to 3 2L the LFE is turned on etc In two channel mode acmod is set to 2 0 the LFE is turned off etc The same thing occurs in the DP571 when the Program Configuration is changed Dolby E Multichannel Distribution System User Manual Introduction 1 6 1 6 1 1 6 2 1 6 3 1 6 4 1 6 5 Common Features of the DP571 and DP572 This section discusses the most important common features between the encoder and decoder See Chapter 3 DP571 Dolby E Encoder and Chapter 4 DP572 Dolby E Decoder for complete references for both units PCM Delay Channel The encoder and decoder each impart an audio delay equal to one video frame When feeding a pair of channels on a digital VTR the non encoded pair would be out of sync with the encoded signal To compensate for the delay the encoder and decoder both contain a one video frame PCM utility delay Metadata Metadata can be supplied to the DP571 encoder via an RS485 connection During Dolby E decoding the DP572 outputs metadata on an RS485 connection Metadata can also be generated internally in the DP571 Timecode SMPTE Linear Time Code LTC can be applied to the unbalanced BNC connector on the DP571 and can be recovered during decoding from the unbalanced BNC connector on the DP572 Both connectors are marked LTC The time code data is carried as part of the Dolby E bitstream
10. 485 9 pin female D on the rear panel Status Port TTL levels 9 pin female D on the rear panel Auxiliary Port RS 485 9 pin female D on the rear panel 10BASET Port RJ 45 female jack connector on the rear panel Size 1 rack unit 1 75 x 19 x 12 75 inches 44 x 483 x 324 mm Weight 6 0 lb 2 7 kg 5 1
11. Input Output GPI O signals for the DP572 are available from the Status port a female DB 9 connector The input and output signals are 0 5 V TTL Table 4 1 defines the pin configuration Table 4 1 DP572 Status Port Pin Functions Pin Direction Connection Explanation 1 Output Dolby E Detect 1 Dolby E 0 PCM or none 2 Output Reference Video Valid 1 Valid 0 Ref video error 3 Output Dolby E Decoding Valid 1 Valid 0 Decoding error 4 Output System Operational 1 Functional 0 Failed 5 Output Fault 1 Functional 0 Hardware fault 6 Output Reserved 7 Input PCM channel routing Voiceover and Switched mode 8 Input PCM channel routing Voiceover and Switched mode 9 N A Ground Using the Status Port to Select Voiceover and Switched Modes The PCM Input channel routing can be changed via the Status port between Voiceover and Switched Out modes which are generally used when Dolby Eis part ofa distribution system without a VTR Oe a network feed to an affiliate Voiceover mode mixes the PCM input over the main program audio e Switched Out mode replaces the main program audio with the PCM input These modes can be controlled from the front panel serial remote or Status port See Output Routing on page 8 for a complete explanation of other PCM Chan Config Output Routing modes not accessible to change via the Status port 4 4 Dolby E Multichannel Distribution System User M
12. Metadata Source AC 3 Metadata 48kHz Pull Down Frame Rate Bit Depth Adaptive Ext Override Enable Enable 25 fps 16 bit y Metadata Revert Stop Encoding x Metadata Source External b d Metadata Revert Preset Figure 3 5 Operating Mode menu Time Code Input This parameter controls where the DP571 derives its time code information LTC VITC LTC In connector supplies time code Vertical Interval Time Code is derived from the Video Ref In connector Metadata Revert This parameter determines what happens if the external metadata source is interrupted These settings are only active if the Metadata Source is set to External or Ext Override Stop Encoding Stops encoding and displays error status on front panel Error LED Most likely useful only in postproduction Last Used Continues encoding using the last values set by the external source Preset If any metadata parameters are missing the Program Config selected in Metadata Params Reversion Preset is used but no Dolby Digital metadata is included in the Dolby E bitstream See Section 3 2 4 Metadata Params Adaptive Behaves like Last Used if the metadata disappears completely Behaves like Preset if any metadata parameters are missing 3 9 Dolby E Multichannel Distribution System User Manual DP571 Dolby E Encoder Metadata Source Internal Assigns factory default metadata values based on each P
13. TTL The pin configuration is defined in the table below Table 3 1 DP571 Status port pin functions Pin Connection Explanation 1 Preset Tally A Preset tally output 2 Reference Video Valid 1 Valid 0 Ref video error 3 Dolby E Encoding Valid 1 Valid 0 Encoding error 4 System Operational 1 Functional 0 Failed 5 Fault 1 Functional 0 Hardware fault 6 Preset Tally B Preset tally output 7 Preset Ctrl A Preset control input 8 Preset Ctrl B Preset control input 9 Ground Using the Status Port to Select Presets The two inputs on pins 7 and 8 select among the first three of eight presets stored in the DP571 The inputs are normally high internal pull up and trigger a preset recall by sensing a momentary high to low transition A momentary contact closure between pins 7 and 9 ground or pins 8 and 9 is sufficient to activate a function but a held closure also works A low to high transition 1 e a switch release 1s ignored Table 3 2 summarizes the operation of the two inputs 3 4 Dolby E Multichannel Distribution System User Manual DP571 Dolby E Encoder 3 1 10 3 1 11 Table 3 2 Status port preset selection Pin 7 Transition Pin 8 Transition Preset High to low None or low to high 1 None or low to high High to low 2 High to low High to low 3 Presets 1 3 also generate corresponding outputs on the Status port that can be used to
14. channel L R LS RS channels are not used Left and right channels no center or surround channels For a two channel system the signal is reproduced equally from the L R channels For a 5 1 channel system the signal can either be reproduced from only the L R channels or optionally from L C R S see Dolby Srnd Mode Left center and right channels no surround channels For a two channel system the L R signal is reproduced equally from the L R channels the center channel is attenuated 3 dB and sent to the L R channels For a 5 1 channel system the signal is reproduced by the L C R channels Left right and surround channels For a two channel system the L R signal is reproduced equally from the L R channels the surround channel is attenuated 3 dB and sent to the L R channels For a 5 1 channel system the signal is reproduced by the L R S channels This is an extremely un common format Left center right and surround channels For a two channel system the L R signal is reproduced equally from the L R channels the center and surround channels are attenuated 3 dB and sent to the L R channels For a 5 1 channel system the signal is reproduced by the L C R S channels Left right left surround and right surround channels For a two channel system the L R signal is reproduced equally from L R channels the Ls Rs channels are attenuated 3 dB and sent to the L R channels respectively For a 5 1 cha
15. gt Not indicated D Small Room Type gt Large Program 1 Program 1 gt RF Mode Pro Line Mode Pro 2 Enter ese Enter ese RF Mode Pro RF Mode Pro Line Mode Pro Line Mode Pro gt CD Film Standard None 45 Film Standard RF Mode Pro RF Mode Pro Line Mode Pro Line Mode Pro Speech DP Music Light 4 Speech BP Music Light 4 RF Mode Pro La p RF Mode Pro Line Mode Pro La 8 Line Mode Pro Music Standard Music Standard Film Light Film Light Figure 3 7 Metadata Params menu Dolby E Multichannel Distribution System User Manual DP571 Dolby E Encoder Reversion Preset Metadata Params Reversion Preset Enter fe Reversion Preset Program Config Enter less See the Program Config section for possible settings Metadata Params Program 1 N Figure 3 8 Reversion Preset menu Reversion Preset specifies a Program Config to use in case an external metadata source 1s interrupted See Metadata Revert on page 9 for more information on this feature Channel Mode 1 0 Mono 2 0 Stereo 3 0 2 1 3 1 2 2 3 2 Single front channel no surround channels For a two channel system the signal is reproduced equally from both channels attenuated 3 dB For a 5 1 channel system the signal is reproduced from the center
16. more than six channels For example while the 5 1 2 Program Config is selected 16 bit mode is not visible and cannot be selected Change the Program Config to anything with six channels or less and 16 bit mode can be selected When 16 bit mode is selected Program Configs with more than six channels are not available nor are they displayed in the Program Config menu Current postproduction practice stores Dolby E in the 20 bit format for both High Definition HD and Standard Definition SD programming This allows storing a 5 1 channel mix along with a two channel foreign language version of the same program on one AES pair of channels on a VTR usually channels 3 and 4 Channels 1 and 2 normally carry a Dolby Surround or stereo version of the same program This convention makes the tape useful when the multichannel version is not required or cannot be decoded When recording Dolby E onto a digital VTR certain parameters must be adjusted to identify the signal as data instead of audio Both the Sony HDCAM and Panasonic HD D5 have menu settings that switch the audio tracks to DATA MODE The Sony Digital Betacam is automatically in DATA MODE but may require adjustment to the following parameters to optimize performance Edit Mode butt splice only Crossfade Off or 0 ms and Error Correct Correct not Conceal Note Ifthis tape was played back through a plant capable of passing only 16 bit audio the Dolby E track would be truncated
17. passed to the DSP subsystem for decoding A PCM signal can also be input to Main In and passed directly to Digital Outputs 1 2 The DP572 automatically detects whether the Main In signal is Dolby E or PCM Video Reference An analog composite video reference signal is required for Dolby E decoding Versions 1 05 and later support two frame rates 29 97 Hz NTSC and 25 Hz PAL If the video reference signal is not present or invalid the DP572 will stop decoding the Dolby E bitstream e PCM outputs on the decoder will be muted VRefLED will be red Vref not present or yellow Vref unequal to frame rate of Dolby E Main Input PCM Input A separate PCM signal can be applied to the PCM Input and transported in parallel with the Main In signal A delay equal to the main channel latency is added to the PCM signal Remote Future versions of the DP572 will permit remote control through the front RS 232 or rear panel RS 485 remote ports Auxiliary The RS 485 auxiliary port will be implemented in future versions 10BASE T This port will be implemented in future versions Metadata Dolby Digital metadata is extracted from the Dolby E bitstream and sent out the metadata port This port can be connected to the DP569 Dolby Digital Multichannel Encoder software must be version 1 21 or later 4 3 Dolby E Multichannel Distribution System User Manual DP572 Dolby E Decoder 4 1 8 Status General Purpose
18. t H 48kHz Pull Down g Operating Mode Operating Mode Operating Mode Operating Mode PCM Bypass Bypass Metadata Bypass Latency 1 enter les enter Jes enter Jes Enter es enter les Program Play Disable 48kHz Pull Down PCM Bypass Bypass Metadata Bypass Latency Disable Disable Disable 1 Frame Program Play Enable 48kHz Pull Down PCM Bypass Bypass Metadata Bypass Latency Enable Enable Enable Minimal Figure 4 4 Operating Mode menu Program Play Enable Disable Allows the input to Main In to vary from the nominal 48 kHz sample rate Permits the decoder to operate with a VTR in Program Play mode As the sample rate varies from 48 kHz the decoding latency is no longer exactly one video frame The P in the display below reflects that Program Play is enabled Dolby E P 5 142 20bit The sample rate of the Main In input must be 48 kHz for the DP572 to decode 48 kHz Pull Down See 48kHz Pull Down on page 3 10 PCM Bypass Enable Disable Allows smooth transitions between decoded Dolby E and PCM audio Audio outputs are muted until a valid Dolby E stream is received at the Main In input This is useful when editing on a VTR while decoding with the DP572 Bypass Metadata This feature is only relevant if PCM Bypass mode is enabled Disable Enable
19. with the EMC requirements of EN55103 1 and EN55103 2 when operated in an E2 environment in accordance with this manual This equipment shall not be exposed to dripping or splashing and no objects filled with liquids such as coffee cups shall be placed on the equipment Dolby E Multichannel Distribution System User Manual Regulatory Notices Important Safety Notice ep This unit complies with the safety standard IEC65 To ensure safe operation and to guard against potential shock hazard or risk of fire the following must be observed Ifthe unit has a voltage selector ensure that it is set to the correct mains voltage for your supply If there is no voltage selector ensure that your supply is in the correct range for the input requirement of the unit Ensure fuses fitted are the correct rating and type as marked on the unit Theunit must be earthed by connecting to a correctly wired and earthed power outlet e The power cord supplied with this unit must be wired as follows Live Brown Neutral Blue Earth Green Yellow Theunit shall not be exposed to dripping or splashing and no objects filled with liquids such as coffee cups shall be placed on the equipment Important Note de Securite F Ce materiel est conforme la norme IEC65 Pour vous assurer d un fonctionnement sans danger et de pr venir tout choc lectrique ou tout risque d incendie veillez observer les recommandations suivantes e Leselecteur de te
20. 11 LEDs unique to the DP571 and DP572 eS 1 11 Channel Activity LEDs for the DP571 and DP572_ sese 1 12 RS 485 Termination jumper settings ed tet nteger i dala 1 16 DPS571 Stat s port pin functions rl haa beau bestias 3 4 Status port preset selection sra ad onise 3 5 Preset mode tally indication on Status port 3 5 DP571 Program Configurations eec rte t e inte Ene aite el even Dt dd eiua 3 8 DP572 Status Port Pin Functions cir 4 4 Status port output routing mode selection 4 5 viii Dolby E Multichannel Distribution System User Manual Preface Regulatory Notices A FCC This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio fre quency energy and if not installed and used in accordance with this instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his or her own expense Canada This Class A digital apparatus complies with Canadian ICES 003 UL Troubleshooting must be performed by trained technicians D
21. 572 Status Mode Memo alla lado 4 11 Chapter 5 System Specifications sees 5 1 1 1 1 2 1 3 2 1 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 10 3 11 4 1 4 2 4 4 4 5 4 6 4 7 4 8 4 9 4 10 List of Figures Checking the main EE 1 4 Connection between a DP569 and DP572 lle aaa 1 6 DP571 and DP572 front panel controls and LEDS ui 1 8 Typical Dolby E system in a postproduction facility seen 2 3 DRS Block Diagram e sped pu Rupe d de RUN Gig e o queda 3 1 DP571 front and back panel daria 3 2 DPS571 Unit reali 3 6 Progr m Config AAA A A A 3 7 Operating Mode MEL 3 9 PES E 3 12 Mgladata Par asst IU codes sa en Ne LS D I LEM 3 13 Reversion Preset MENU ET 3 14 Systemi Settings D 3 16 Firmware Upgrade menu o6 essa iot ei 3 16 DPS571 status COS eege a ce he de da 3 16 DP372 block diagtdti coil ela e ted dius 4 1 DP572 front and rear panels dille lari 4 2 DPS572 Unit Setup THER io stet elek 4 6 Operating Mode mie aao oret edt tt nine M Na a cut dese e dan eati vus 4 7 PCM Ch n Config ment pa A EA leese 4 8 Headphone Prog menu Sos eot cedet eie A EE 4 9 Headphone Map menu fae UA 4 10 System Settings MENU 5 2550 eco einen 4 10 Firmware Upgrade metu uos testes ix Ee pac ta bl vint d 4 11 DP572 Status Men s aeter tatio vare ctetu ebat iced uiti OH Malus endete even 4 11 vii 1 1 12 1 3 1 4 3 1 3 2 3 3 3 4 4 1 4 2 List of Tables LEDs common to the DP571 and DP572 illa 1
22. 9 the terminators should be applied to the loop through BNC connectors on the DP569 Connect the Main Out of the encoder to the Main In of the decoder and terminate the input Apply power to the DP571 and or DP572 After completing the boot process about 25 s both units show their current status on the display same configuration as when they were last powered down If the VRef LEDs are not green on both units make sure a valid analog NTSC or PAL reference signal black burst is applied to both units and that they are properly terminated The DP571 shows the current encoding Program Config Set it to 5 1 2 by pressing Setup Enter when the display shows DP571 Unit Setup Program Config The display now shows the current program configuration Press the or T keys until 5 1 2 is displayed and press Enter The square cursor to the left stops blinking and disappears to indicate the value has been entered JA Using video equipment for distribution of this AES signal is not generally recom mended Equipment is available designed specifically for passing AES3 ID signals Dolby E Multichannel Distribution System User Manual Introduction 2 9 Verify that the Metadata Revert and Source parameters are in the correct mode Press Esc until DP571 Unit Setup Program Config is displayed again home in the setup menu structure Press the 4 key until DP571 Unit Setup Operating Mode is displayed then press Enter
23. Fase Bruin Nul Blauw Aarde Groen Geel Ditapparaat mag niet worden blootgesteld aan vocht Vanwege het risico dat er druppels in het apparaat vallen dient u er geen vloeistoffen in bekers op te plaatsen xii Dolby E Multichannel Distribution System User Manual Chapter 1 Introduction The Dolby E multichannel distribution system is the first technology that can transport multichannel audio within the digital broadcast industry s current two channel infra structure A single Dolby E bitstream can carry up to eight discrete audio channels each with its associated Dolby Digital metadata in a 16 or 20 bit 48 kHz AES pair Since Dolby E s audio and video frame rates are identical many common editing and switching practices can be performed on the encoded bitstream without causing mutes or other disturbances in the decoded PCM audio For editing tasks that require decoding Dolby E s sophisticated audio coding algorithm allows ten or more encode decode cycles without audible degradation this exceeds the requirements of even the most elaborate program contribution distribution and emission paths Even experienced studio engineers must learn new techniques and terminology to begin using these Dolby E devices Fortunately Dolby Laboratories has greatly simplified the process of getting started e The DP571 encoder and DP572 decoder employ an almost identical front pan el user interface The devices are also similar to som
24. ING To reduce the risk of fire replace fuses only with the same type and rating Each unit uses a universal switching power supply that handles the full range of nominal mains voltages between 90 and 264 VAC and any frequency between 50 and 60 Hz Check Main Fuse T IAL 1 Amp 250 V 20 mm time lag fuse low breaking capacity for all operating voltages WARNING The power to the unit must be off when the following steps are performed Ensure that the main power cable to the unit is not connected to a power source 1 Open the fuse compartment door in the AC power input housing with a small flat blade screwdriver Figure 1 1 2 Check that the fuse in the active lower fuse carrier is the correct rating The fuse carrier must be inserted into the compartment with the orientation shown in Figure 1 1 Do not force the carrier into the compartment or both could be damaged 3 Snap the fuse compartment door closed 1 3 Dolby E Multichannel Distribution System User Manual Introduction Metal clip installed on unused side of camere Install fuse Figure 1 1 Checking the main fuse Internal Fuse The switching power supply contains a separate fuse Most fault conditions should be protected by the main fuse The internal fuse rating is F 2A L 2 Amp 250 V 20 mm fast acting low breaking capacity for all operating voltages Dolby E Multichannel Distribution System User Manual Introduc
25. Manual DP572 Dolby E Decoder 4 2 DP572 Setup Mode Menu Reference This is the top level of the DP572 menu hierarchy for editable parameters Each menu is discussed in its own section and displayed with all submenus and values DP572 Unit Setup DP572 Unit Setup DP572 Unit Setup DP572 Unit Setup DP572 Unit Setup DP572 Unit Setup Operating Mode PCM Chan Config Headphone Prog Headphone Map System Settings Firmware Upgrade Figure 4 3 DP572 Unit Setup menu Conventions In the menu diagrams the arrow keys select among menus at the same hierarchical level and settings within a menu category Although selection between menus and settings is indicated in the diagrams by horizontal and vertical arrows respectively this is a graph ical convention only The keys both go to the next menu or setting the T keys both return to the previous menu or setting A double headed arrow in the diagrams in dicates that an arrow key can select between the two settings or menus The Esc and Enter keys ascend and descend respectively one menu level They are labeled in the menu diagrams and appear as single headed arrows down for Enter and up for Esc Dolby E Multichannel Distribution System User Manual DP572 Dolby E Decoder 4 2 1 Operating Mode Enter DP572 Unit Setup Esc Operating Mode Ch Operating Mode Ly Program Play
26. able below for additional settings Table 1 4 RS 485 Termination jumper settings Connector Tx Term On Rx Term On DP571 Metadata J13 Pin 1 2 J15 Pin 1 2 DP571 Remote J12 Pin 1 2 J14 Pin 1 2 DP572 Metadata J15 Pin 1 2 J13 Pin 1 2 DP572 Remote J12 Pin 1 2 J14 Pin 1 2 The only remaining terminations are accessed via the passive loop through BNC connectors on each unit s rear panel The video reference input on both units should be terminated if the loop through is not used to feed other equipment The AES3 ID 1995 SMPTE276 M standard uses a 75 Q connection and requires proper termination As with video the termination should occur only at the destination of the signal 1 e on the inputs to a device For the DP571 the loop through BNC connectors for the inputs must have terminators if they are not being used to feed other equipment For the DP572 the loop through BNC for the Dolby E input must be terminated Dolby E Multichannel Distribution System User Manual Chapter 2 Common Dolby E Applications 2 1 This section presents six common broadcast audio applications with configuration instructions for the Dolby E encoder and decoder With minor modifications to these application settings most common variations can be easily accommodated Film The two most common types of major motion picture sound formats are two channel Dolby Stereo compatible with Dolby Surround and 5 1 channe
27. amages Dolby and the double D symbol are registered trademarks of Dolby Laboratories 2000 Dolby Laboratories Inc All rights reserved S00 12805 13054 Table of Contents List OF FIQUIGS o occae oue le vii Listof TabI68 enee viii Preface Regulatory Notices ix Chapter 1 Introduction 7 een 1 1 1 1 Broken 1 3 1 2 a s eee eiie O Nea Ae cede tana 1 5 12 4 Digtal OD A alal 1 5 1 22 Vid o Referente too ise e 1 5 1 239 Signal EE 1 5 1 3 Connection with the DP569 Multichannel Encoder 1 6 1 4 Front Panel User teta o o eee aterert eo er 1 7 1 4 1 Menu Selection and Push button Operation 1 9 NAD MDS a cols 1 10 1 amp 3 Disp E eset eiue A at NR ER dude 1 10 UE E 1 12 1 5 Quickstart Guide for the DP571 and DP572 ias aa es 1 13 1 6 Common Features of the DP571 and DP572 1 15 1 6 1 PCM Delay Chanel ss o ee GER e ra erus 1 15 1 62 Metadata iuc AA ares au ee ni edens 1 15 KOS ee 1 15 LGA Video Retroceder 1 15 1 6 5 Channel COn Oda ds 1 15 1 7 Configuring Jumper Settings minita 1 16 Chapter 2 Common Dolby E Applications 2 1 E EN 2 1 2 2 Commercial and Interstitial galla 2 2 2 3 News and Local Programming ci 2 2 2 5 IM b uu e CL aad o E e 2 2 2 5 Live BVOUs cubat A CHER UE E e d x aeu in MATURA 2 2 2 5 POS pr lUe EE 2 3 iii
28. ams while reading this chapter e Figure 3 1 block diagram of the DP571 e Figure 3 2 DP571 front and rear panels FA VREF Frequency Lock KE J Synchron SS Module Video Reference VSYNC dee TC Receiver dd LTC Input AES3 Sample Rat ample Rate gt Receiver Converter v Input Chan 1 2 t Jj LN AES3 Sample Rate Auxiliary Y Receiver Converter Y AES3 Dolby E ET Input Chan 3 4 BSP Transmitter hi 2 ZUM AES3 Sample Rate 9 gt Receiver gt Converter Main Out I gt CJ Input Chan 5 6 Meta Data AES3 Sample Rate Receiver Converter Input Chan 7 8 SH AES3 AES3 bo T Receiver Transmitter SS PCM Delay Input PCM Delay Out 6 oX gt gt FPO 00 LCD amp LEDs Remote Microcontroller Front FPI Switch ES gt Switches Remote Rear gt Figure 3 1 DP571 Block Diagram Status DP571 Dolby E Encoder Dolby E Multichannel Distribution System User Manual jouuosied payyjenb oj sonas e ojos episui sued ejqeeojuies Jasn ON ONINHVM sinduy 8 1 49 9 S 49 ieygig Pi vig UD ZIL 49 19od BuiAjdde a105aq Bunes asnj 19949 DNINUYM Jepoo2u3 3 Aqiog LZSdd I9PON 35 Win pue oosoues ues uj seuoje1oqe qiod XXXXX NIS WS ut e
29. and the tape rendered useless 20 bit Default value allows Dolby E encoding of up to eight channels into a 1 9 Mbps AES pair 16 bit Allows Dolby E encoding of up to six channels into a 1 5 Mbps AES pair 3 11 Dolby E Multichannel Distribution System User Manual DP571 Dolby E Encoder 3 2 3 Presets gt DP571 Unit Setup Enter Presets Esc Presets Presets Save Preset Recall Preset Enter Jes enter Jes Up Down arrow keys Save Preset Recall Preset Arrow keys select presets 1 8 select presets 1 8 1 01 Preset 1 Names assigned in Save Preset appear to the right of the number Enter e enter Left right arrow keys move to next letter in Enter Name Top level preset name Preset 1 Status Menu Up Down arrow keys select letters Enter and numbers Enter Save Settings Esc ENTER Yes ESC No Figure 3 6 Presets menu A Preset represents all settings and values in the DP571 Presets are useful when an en coding task requires manual parameter setting beyond selecting a Program Config Rather than repeating the steps for each encoding session save the proper settings as a named Preset that can be recalled when needed This menu controls saving naming and recalling the DP571 s eight presets Presets have default names PRESET N where N is between 1 and 8 In the Enter Name menu the lt gt keys move to the previous next
30. anual DP572 Dolby E Decoder 4 1 10 4 1 11 The state of the pins is normally high internal pull up and they detect a high to low transition A held contact closure between pins 7 and 9 ground or pins 8 and 9 is required to activate a function A low to high transition i e a switch release restores the External Standby setting Table 4 2 shows the function of the two GPI pins on the DP572 Table 4 2 Status port output routing mode selection PCM Chan Config SA TINGS edad eU ono Routing Mode High High External Standby High Low Voiceover Low High Switched Out Low Low Reserved Digital Outputs A maximum of eight channels of decoded audio are supplied on the four AES3 outputs A second electrically isolated output is supplied for each channel pair Note The digital outputs are electrically separate not passive loop through connections so there is no need to terminate an unused output PCM Delay Output Encoding delay is added to the PCM signal which is then transmitted from the PCM Delay Out connector The DSP subsystem calculates the delay equivalent to the main channel latency and applies it to the PCM Delay Out If PCM bypass mode is enabled the delay matches that of the bypass channel LTC Output After de multiplexing timecode information from the Dolby E stream the DP572 provides a standard SMPTE LTC signal 4 5 Dolby E Multichannel Distribution System User
31. ault Red Hardware related fault condition 4 Off No fault condition Green Remote mode enabled with no communication errors Remote Red Remote mode enabled but communication error detected Off Remote mode not enabled Green Valid PCM signal PCM Delay Yellow Non 48 kHz signal Off No PCM signal Etror Red Input s not valid for current settings Off No error condition Green Lock with a valid analog composite video signal VRef Red Lock not achieved Yellow Frame rate of Vref unequal to frame rate of Dolby E Main Input DP572 or Main Output DP571 TC and Main Table 1 2 LEDs unique to the DP571 and DP572 Name Function TC DP571 Yellow Non 29 97 Hz signal Green Valid time code signal Off No TC signal detected Main DP572 Green Dolby E or PCM signal Red No input signal Yellow Non 48 kHz input or AES3 error condition Input Output Channel Activity The DP571 Input Channel Activity LEDs display the number of channels in the currently selected program configuration The DP572 Output Channel Activity LEDs display the number of active output channels Dolby E Multichannel Distribution System User Manual Introduction The following LED color codes describe the same channel activity for both units Table 1 3 Channel Activity LEDs for the DP571 and DP572 Name Function Yellow Channel enabled level 60 dBFS Green Channel enabled 60 level 0 1 dBFS Red C
32. dio vanno osservate le seguenti misure di sicurezza e Assicurarsi che il selettore di cambio tensione sia posizionato sul valore corretto e Assicurarsi che la portata ed il tipo di fusibili siano quelli prescritti dalla casa costruttrice L apparecchiatura deve avere un collegamento di messa a terra ben eseguito anche la connessione rete deve avere un collegamento a terra lcavo di alimentazione a corredo dell apparecchiatura deve essere collegato come segue Filo tensione Marrone Neutro Blu Massa Verde Giallo lprodotto non deve essere sottoposto a schizzi spruzzi e gocciolamenti e nessun tipo di oggetto riempito con liquidi come ad esempio tazze di caffe deve essere appoggiato sul dispositivo xi Dolby E Multichannel Distribution System User Manual Regulatory Notices Aviso Importante De Seguridad E Esta unidad cumple con la norma de seguridad IEC65 Para asegurarse un funcionamiento seguro y prevenir cualquier posible peligro de descarga o riesgo de incendio se han de observar las siguientes precauciones Aseg rese que el selector de tensi n est ajustado a la tensi n correcta para su alimentaci n Aseg rese que los fusibles colocados son del tipo y valor correctos tal como se marca en la unidad Launidad debe ser puesta a tierra conect ndola a un conector de red correctamente cableado y puesto a tierra El cable de red suministrado con esta unidad debe ser cableado como sigue Vivo Ma
33. e Music Light Applies light compression to music that is already compressed and does not require excessive dynamic range restriction Music Standard Applies more compression to music that is not compressed and requires dynamic range restriction Film Light Applies light compression to a subjectively quiet film that does not require excessive dynamic range restriction Film Standard Applies more compression to a subjectively loud film that requires dynamic range restriction RF Mode Pro RF Mode Pro file sets the compr metadata parameter to presets with the same names as Line Mode Pro but each setting is 11 dB more sensitive to avoid overloading the RF input of a television 3 15 Dolby E Multichannel Distribution System User Manual DP571 Dolby E Encoder 3 2 5 3 2 6 3 3 System Settings Enter DP571 Unit Setup System Settings Esc Ch System Settings System Settings L gt Remote Baud Rate Unit Address System Settings lt gt Unit Name 4 enter ese Enter Jes Enter ese _ Remote Baud Rate Unit Address 9 6 kbps 8280 Unit Name Dolby E Encoder Remote Baud Rate 38 4 kbps Remote Baud Rate 19 2 kbps Figure 3 9 System Settings menu Remote control functions are not yet available for the initial Dolby E product release so this menu is useful only duri
34. e Vref LED turns from green to yellow and decoding is disrupted 29 97 fps Default value for Dolby E output used with NTSC equipment 25 fps For Dolby E output used with PAL equipment 3 10 Dolby E Multichannel Distribution System User Manual DP571 Dolby E Encoder Bit Depth Version 1 05 and later of the DP571 572 can encode decode both 16 and 20 bit Dolby E bitstreams Versions prior to 1 05 offer only 20 bit operation and future versions will offer 24 bit operation The 16 bit feature allows Dolby E to be used with 16 bit recording devices The DP572 automatically responds to the encoded input signal s bit depth and inaudibly switches to decode the correct Dolby E stream The bit depth ofthe current input stream is denoted by the Input Data LEDs Note This only affects the space the Dolby E bitstream occupies in the main AES output and not the resolution of the encoded or decoded PCM audio A16 bit 48 kHz AES channel has a data rate of 1 5 Mbps which is 400 kbps less than a 20 bit 48 kHz channel To compensate for this lower data rate and maintain the highest audio quality over the maximum number of encode decode generations only six audio channels can be encoded in 16 bit mode As the decoder automatically switches from 16 to 20 bit decoding in response to the input stream it seamlessly enables decoding the two additional channels Selecting 16 bit mode is possible only if the current Program Config uses no
35. e name T changes the value of the current character to the previous alphanumeric character Enter Enters the displayed value as the currently active value or descends one level in the menu hierarchy Esc Aborts the current operation or ascends one level in the menu hierarchy When setting a new value in Setup mode a blinking cursor indicates a new value has been selected but not set Press Enter to set the value or Esc to restore the current value either key removes the blinking cursor Pressing Esc again ascends one level in the menu hierarchy Shift Press Shift to access the functions labeled above and below the arrow Setup and Enter DP572 keys The Shift key illuminates until another key is pressed This manual will refer to the actual key marking when giving instructions not to the labels above or below the key For example access the Contrast menu by pressing Shift Access the head phone level on the DP572 by pressing Shift Enter Status Press Shift Setup to enter Status mode to query the device status values can be viewed but not set in this mode See Section 3 3 DP571 Status Mode Menu and Section 4 3 DP572 Status Mode Menu to view the Status mode menus Setup Press Setup to enter Setup mode Displays DP571 Unit Setup Program Config or DP572 Unit Setup Operating Mode from any mode or menu Use the Enter Esc T J and gt keys to navigate and set values in this mode 1 9 Dolby E Multic
36. e of the Dolby Digital series of encoders and decoders which may be familiar to broadcast engineers Choosing the appropriate Program Configuration on the DP571 is logically connected to the application type Selecting the Program Config sets most of the DP571 encoding parameters including the Dolby Digital metadata Very few if any individual parameters need to be set e The DP572 decoder is almost entirely configured by the settings in the encoded Dolby E stream from the DP571 We included both devices in one manual because they will almost always be used in the same system This manual is organized to emphasize the similarities between the encoder and decoder and to enable engineers with different learning styles access to the material in the manner they prefer 1 1 Dolby E Multichannel Distribution System User Manual Introduction The rest of this chapter presents important introductory information Section 1 1 Unpacking and Inspection Discusses how to unpack inspect and check the fuses for both units Section 1 2 System Considerations Discusses Dolby E s digital I O connector types and signal characteristics Section 1 3 Connection with the DP569 Multichannel Encoder Discusses connection with a Dolby E system and metadata setup of the Dolby Digital encoder Section 1 4 Front Panel User Interface Discusses how to navigate the menus set new values and interpret the LEDs Section 1 5 Quickstart G
37. gnal to be mixed with Voiceover or replace Switched Out the Dolby E decoded audio This feature is particularly useful in a facility that must pass network originated multi channel audio but can route a maximum of four channels Voiceover and Switched Out modes are effected within the DP572 and therefore require no additional processors Both modes are described in detail in Output Routing on page 4 8 Main In VRef Local or PCM In Voiceover audio DP572 Dolby E Decoder GPI A Status Digital Outputs 1 2 3 4 5 6 Metadata NN L R C LFE Ls Rs Metadata DP569 Dolby Digital Multichannel Encoder Main Out Figure 1 2 Connection between a DP569 and DP572 1 6 Dolby E Multichannel Distribution System User Manual Introduction 1 4 Front Panel User Interface The DP571 and DP572 employ the same user interface to access menus and display status information This section introduces the interface controls and display features see Figure 1 3 Conventions The symbol will be used to notate key sequences not simultaneous key combinations For example press Shift Setup to enter Status mode means press the Shift key then press the Setup key not press the Shift and Setup keys at the same time The Shift key provides access to the functions labeled above and below the Arrow Setup and Enter DP572 keys This manual will refer to the marking on the actual key pressed whe
38. hannel Distribution System User Manual Introduction 1 4 2 1 4 3 Display The display is a 2 line by 16 character alphanumeric display with green LED back lighting The contrast can be adjusted by pressing Shift Use the arrows to set the contrast During normal Dolby E encoding the DP571 displays the Program Config frame rate and the output data width e During normal Dolby E decoding the DP572 displays signal type PCM or Dolby E Program Config frame rate and the input data width Display LEDs Output Input Data The DP571 displays the Output Data width At version 1 05 only the 16 and 20 bit set tings are valid The DP572 displays the Input Data width for the incoming Dolby E stream Note A 24 bit version will be available in the future Dolby E Program Config The DP571 displays the current encoding Program Configuration on one of eight LEDs The DP572 displays the Program Configuration on one of eight LEDs for the incoming Dolby E stream The LEDs are disabled if the input is PCM audio The LEDs are mutually exclusive The seven most common Program Configs have their own LEDs Other denotes any of the other 15 Program Configs See Section 3 2 1 Program Config for a complete listing Dolby E Multichannel Distribution System User Manual Introduction Fault Remote PCM Dly Error and VRef Table 1 1 LEDs common to the DP571 and DP572 Name Function F
39. hannel enabled level 2 0 1 dBFS Off Channel disabled Flashing Yellow Channel sample frequency out of range DP571 only 1 4 4 Remote Future versions of the DP571 and DP572 will allow remote control operation The front panel Remote port is an RS 232 connector Dolby E Multichannel Distribution System User Manual Introduction 1 5 Quickstart Guide for the DP571 and DP572 This section supplies necessary information to allow immediate encoding and decoding 1 After unpacking the DP571 and or the DP572 but before applying AC power plug in a stable analog video reference signal Standard black burst or color bars can be used as reference video if they are locked to the plant reference Since neither unit will function without a video reference signal we recommend making this connection first Connect the digital audio inputs to the DP571 These are AES3 ID inputs unbalanced 750 1 V peak to peak standard output and are very similar to analog composite video If the loop through BNC connectors are not being used to feed additional equipment terminate them with a standard 75 2 video terminator Connect the digital audio outputs of the DP572 These AES3 ID outputs are electrically separate not loop throughs and should not be terminated at the DP572 Like analog composite video the termination should be placed on the last device in the signal chain For example if the DP572 is connected to a DP56
40. he DP569 Multichannel Encoder One of Dolby E s most important features is its ability to carry Dolby Digital metadata The DP571 can receive metadata from an external device such as a metadata authoring tool or it can generate metadata internally The DP572 decodes the Dolby E signal extracts the metadata and sends it to the DP569 Dolby Digital encoder Use a standard DB 9 male to male cable not a null modem to connect the Metadata output on the DP572 decoder to the Aux Data input on the DP569 Note To be used effectively in a Dolby E system the DP569 must have software version 1 21 or later Figure 1 2 shows the audio connections between the DP572 and DP569 Connect the DP572 s Digital Output channels 1 2 3 4 5 6 to the DP569 s Digital Input channels 1 2 3 4 5 6 respectively Install 75 2 terminators if the loop through BNC connectors on the DP569 are unused When a DP569 receives external metadata the following parameters must be explicitly set e Set the Metadata Source to External e Set the Metadata Program to Program 1 e Set the Metadata Reversion mode Last Used is recommended for a DTV facility because it is the only setting that continues encoding if the external metadata source is interrupted See Metadata Revert on page 3 9 for a complete discussion Figure 1 2 also shows signals applied to the PCM Input and Status connectors The Status signals can command the DP572 to change modes to allow the PCM Input si
41. indicate selection ofa preset via the Status port Serial Remote port future or the front panel A high level for both outputs indicates selection of a preset other than 1 3 or no preset Table 3 2 summarizes the two outputs Table 3 3 Preset mode tally indication on Status port Preset Tally A Preset Tally B Preset Low High 1 High Low 2 Low Low 3 Auxiliary The RS 485 auxiliary port will be implemented in future versions 10BASE T This port will be implemented in future versions 3 5 Dolby E Multichannel Distribution System User Manual DP571 Dolby E Encoder 3 2 DP571 Setup Mode Menu Reference DP571 Unit Setup DP571 Unit Setup DP571 Unit Setup DP571 Unit Setup DP571 Unit Setup DP571 Unit Setup Program Config Operating Mode Presets Metadata Params System Settings Firmware Upgrade Figure 3 3 DP571 Unit Setup menus This is the top level of the DP571 menu hierarchy for editable parameters Each menu is discussed in its own section and displayed with all submenus and values Conventions In the menu diagrams the arrow keys select among menus at the same hierarchical level and settings within a menu category Although selection between menus and settings is indicated in the diagrams by horizontal and vertical arrows respectively this is a graphical convention only The 4 keys both go to the next menu or setting the T keys both
42. l Dolby Digital Most modern films are produced with a 5 1 channel soundtrack that is also compatible with DVD and Digital TV formats It is important to note that while not all Dolby Stereo films have a 5 1 channel Dolby Digital soundtrack a 5 1 channel Dolby Digital films have a Dolby Stereo soundtrack Including a Dolby Stereo soundtrack on Dolby Digital films ensures that a single film print can play in theatres with or without a Dolby Digital reproduction system A two channel Dolby Surround film should use the 2 2 program configuration This allows Program 1 the first 2 in 2 2 to carry the Lt Rt audio with full dynamic range and Program 2 to carry either an NTSC version with a reduced dynamic range or a stereo foreign language SAP version Since Program 1 is Dolby Surround encoded the Dolby Srnd Mode metadata parameter should be set to Indicated Foreign language versions of films are also commonly produced in Dolby Stereo so Program 2 s Dolby Srnd Mode metadata parameter should be set to Indicated The Metadata Params settings Line Mode Pro and RF Mode Pro in both programs should be set to either Film Standard or Film Light depending on the type of film being encoded See Section 3 2 4 Metadata Params for more information Select the 2 2 x 1 program configuration to encode a stereo program as Program 1 and two mono SAP channels as Programs 2 and 3 Since Program 1 is Dolby Surround encoded the Dolby Srnd Mode metadata parameter
43. letter in the name and the J T keys change to the next previous alphanumeric character Each named preset retains a numerical component to its name that can be seen when recalling the preset i e 01 SampleName Names can have a maximum of 12 characters 3 12 Dolby E Multichannel Distribution System User Manual DP571 Dolby E Encoder 3 2 4 Metadata Params The Metadata Params affect Dolby Digital decoding not Dolby E encoding or decoding Enter Metadata Params Program 1 Program 1 Program 1 Program 1 gt Bitstream Mode HH Channel Mode Center Dwnmx Lev Enter e Enter Jese Enter Es Bitstream Mode Channel Mode Channel Mode Center Dwnmx Lev Center Dwnmx Lev Bitstream Mode gt Main Complete gt Assc Voice Over Dd 20 Stereo 4 1 0 Mono Ch 0 707 3 048 0 500 5 0 dB lt 4 Bitstream Mode Bitstream Mode ssc Commentary El Assc Emergency Bitstream Modo La p Bitstream Modo Channel Mode La 8 Channel Mode Assc Dialogue Assc Hear Imp i D 2A Bitstream Mode Channel Mode La gt 3 0 Assc Visual Imp Center Dwnmx Lev h oss 45dg 4 Channel Mode Channel Mode 212 gt 3 2 Bitstream Mode Main M amp E
44. lished with a smooth crossfade Main In can be PCM or Dolby E Mixes the Program 1 audio with the PCM input The PCM Dly Output is muted Main In must be Dolby E for Voiceover to function properly Matches the decoding latency of the Main In signal path This is used when the decoder is connected to a VTR to synchronize Dolby E en coded audio with non encoded PCM audio This is the default setting Puts the DP572 in a standby state waiting for commands from the Status port 4 8 Dolby E Multichannel Distribution System User Manual DP572 Dolby E Decoder 4 2 3 Voiceover Mode Selects Mono or Stereo for Voiceover PCM input Mono adds PCM Input Channels 1 and 2 and attenuates 6 dB Note Voiceover and Switched Out modes can be selected via the Status port See Section 4 1 8 Status Voiceover Atten Applies 0 to 31 dB attenuation to the main Dolby E program At 0 dB attenuation overload can occur if the main Dolby E program and Voiceover audio both reach 0 dBFS Delay SRC The Delay Sample Rate Converter setting is only relevant if the Output Routing mode is Delay Out Bypass Does not send the PCM input through a sample rate converter Normal Passes the PCM input through a sample rate converter Headphone Prog Enter DP572 Unit Setup Esc Headphone Prog m gt Headphone Prog Headphone Prog Headphone Prog EN Program 1 n r Program 2 H PCM Delay e
45. n giving instructions not the text above the key For example access the Contrast menu by pressing Shift Access the headphone level menu on the DP572 by pressing Shift Enter 1 7 Introduction Dolby E Multichannel Distribution System User Manual aow y ajow y S c Ayagoy euueyo INdino S JOH A ajoway Joug ney ULINOd UEN JON A ajouoy 4013 neg Z AIGWOd OL Dap puueyo ynduy J940 DZ k ET TK 1x8 GEAR xe Vs Byuo wesGoig 3 qiog J340 zxy hd Lx9 Lxez vs 1x8 zT US xe VS IT wesbo1d 3 Aqiog PESTI 939190 3seguo5 Souen e mum ch El yq 91 eeg3ndino smes e H sut d amos KG m ES ejejeg ajowsy qoz qoz Z L S 3 Aqiog 19 3 Aqioa Z2Sdq IPPON Jepooeg 3 Aglog Aqiog DO PEE PON Japo9u3 3 qjoq Aqiog DO Figure 1 3 DP571 and DP572 front panel controls and LEDs 1 8 Dolby E Multichannel Distribution System User Manual Introduction 1 4 1 Menu Selection and Push button Operation The DP571 and DP572 share an almost identical push button user interface J Keys Both keys advance to the next menu or parameter value When editing a text field moves to the next letter in the name 4 changes the value of the current character to the next alphanumeric character T Keys Both keys return to the previous menu or parameter value When editing a text field moves to the previous letter in th
46. nels 3 4 on the VTR Although the Dolby E signal could be recorded on either channel pair using channels 1 2 for PCM stereo or Lt Rt allows use of the tape at facilities without a Dolby E decoder It also allows audio repro duction from these tracks during jog and shuttle operations in which Dolby E is muted Connect the VTR s output channels 3 4 to the DP572 decoder for confidence monitoring Headphones can be used to monitor any ofthe active channels It is also possible to connect the DP572 s Digital Outputs to a proper monitoring system to evaluate the entire mix Digital Multitrack Recorder VRef L R C LFE a Lt Rt or SAP 12 43 4 5 6 y7 8 Digital Inputs v DP571 Dolby E Encoder Pali LEN i VRef Main A 3 4 Digital VTR U 9000 LTC Out EI O EI ooocono Ns Y VRef 3 4 Main DP572 Dolby E Decoder VRef Digital Outputs y 1 2 I 3 4 y 5 6 7 8 Headphones To Monitor System Figure 2 1 Typical Dolby E system in a postproduction facility Dolby E Multichannel Distribution System User Manual Chapter 3 DP571 Dolby E Encoder 3 1 Hardware Reference This section discusses the DP571 hardware connectors Refer to the following diagr
47. ng firmware upgrades see the next section Firmware Upgrade DP571 Unit Setup Firmware Upgrade Enter i Esc Firmware Upgrade ENTER Yes ESC No Figure 3 10 Firmware Upgrade menu The firmware in the DP571 can be upgraded via the Remote Serial port See the docu mentation that accompanies the upgrade kit DP571 Status Mode Menu Access the Status mode menus by pressing Shift Setup These menus simply display the device s current status and are not used to set values Use the Setup mode menus to set new values Timecode LTC Metadata L 00 00 00 00 fps d Internal Dolby E Video Ref H 5 142 20bit gt 29 97 fps IN Ext Metadata In PCM Delay ENTER to View No Input Error Stats Firmware Version __ ENTER to View Jar Figure 3 11 DP571 status menus 3 16 Dolby E Multichannel Distribution System User Manual Chapter 4 DP572 Dolby E Decoder 4 1 Hardware Reference This section discusses the DP572 hardware connectors Refer to the following diagrams while reading this chapter Figure 4 1 block diagram of the DP572 Figure 4 2 DP572 front and rear panels Time code data Y oc J LTC s TC Generator e ES
48. ng is either two channel stereo or two channel mono The Dolby Srnd Mode metadata parameter should be set to Indicated Programs that are Dolby Digital encoded at the DTV station then decoded by the consumer result in mono programming directed to the Center channel while stereo programming is mapped to the L C R channels During Pro Logic decoding dialogue emanates primarily from the Center channel in both cases This channel placement most closely matches a 5 1 channel program and provides smooth transitions between mono stereo and 5 1 channel programming without operator intervention Line Mode Pro and RF Mode Pro in both programs should be set to either Speech or Film Light depending on the type of program Film Light is a good general purpose setting for programs with speech and music Music Film and DVD have introduced 5 1 channel music to the general public and these both require the 5 1 2 program configuration The predominant music format however remains the two channel compact disc use the 2 2 program configuration Since music is generally recorded at a much higher level than film audio it may be necessary to increase the dialnorm value i e closer to 0 to apply more attenuation at the Dolby Digital decoder Line Mode Pro and RF Mode Pro should be set to either Music Standard or Music Light depending on the music See Section 3 2 4 Metadata Params Live Events Live events can require encoding techniques from each categ
49. nnel system the signal is reproduced by the L R Ls Rs channels This format is sometimes called quad Left center right left surround and right surround channels For a two channel system the L R signal is reproduced equally from the L R channels The center channel is attenuated 3 dB and sent to the L R channels The Ls Rs channels are attenuated 3 dB and sent to the L R channels respectively For a 5 1 channel system the signal is reproduced by the L C R Ls Rs channels 3 14 Dolby E Multichannel Distribution System User Manual DP571 Dolby E Encoder Dolby Srnd Mode Dolby Srnd Indicates to the decoder that a two channel signal is a Dolby Surround Lt Rt program Can activate Dolby Pro Logic decoding in a 5 1 channel Dolby Digital decoder Not Dolby Srnd Indicates to the decoder that a two channel signal is not a Dolby Surround Pro Logic Lt Rt program Not Indicated Indicates to the decoder that a two channel signal may or may not be a Dolby Surround Lt Rt program Dialogue Level Adjusts the dialnorm metadata parameter between 31 decoder applies no attenuation to 1 30 dB attenuation Line Mode Pro Line Mode Pro file sets the dynrng metadata parameter to one of five presets None No dynamic range compression is applied unless downmixing could cause overload in which case protection dynrng is auto matically applied Speech Appropriate for programs with predominantly dialogu
50. ns a one video frame PCM utility delay that allows the PCM input signal to be transported in parallel with the Digital Inputs Metadata The DP571 receives generates and modifies metadata information Metadata is received through the rear panel input from an external source such as an authoring system and embedded into the Dolby E bitstream See Section 3 2 4 Metadata Params for a discussion of metadata parameters that might need to be explicitly set or checked Remote Future versions of the DP571 will allow remote control via the front RS 232 or rear panel RS 485 ports 3 3 Dolby E Multichannel Distribution System User Manual DP571 Dolby E Encoder 3 1 7 Main Out The encoded Dolby E bitstream is output from the rear panel Main Out connector as an AES3 coaxial digital signal Two connectors are available for transmission of Dolby E data to multiple decoders or monitoring units Note The two Main outputs are electrically separate not passive loop through connections so there is no need to terminate an unused output PCM Delay Out Encoding delay is added to the PCM signal transmitted from the PCM Delay Out connector The DSP subsystem calculates the delay equivalent to the main channel latency and applies it to the PCM Delay Out Status General Purpose Input Output GPI O signals for the DP571 are available from the Status port a female DB 9 connector The input and output signals are 0 5 V
51. nsion doit tre plac sur la valeur correspondante votre alimentation r seau e Les fusibles doivent correspondre la valeur indiqu e sur le materiel e Le materiel doit tre correctement reli la terre Lecordon secteur livr avec le materiel doit tre cabl de la mani re suivante Phase Brun Neutre Bleu Terre Vert Jaune Ne pas exposer cet appareil aux claboussures ou aux gouttes de liquide Ne pas poser d objets remplis de liq uide tels que des tasses de caf sur l appareil Wichtiger Sicherheitshinweis D Dieses Ger t entspricht der Sicherheitsnorm IEC65 F r das sichere Funktionieren des Ger tes und zur Unfallverh tung elektrischer Schlag Feuer sind die folgenden Regeln unbedingt einzuhalten e DerSpannungsw hler mu auf Ihre Netzspannung eingestellt sein e Die Sicherungen m ssen in Typ und Stromwert mit den Angaben auf dem Ger t bereinstimmen e Die Erdung des Ger tes mu ber eine geerdete Steckdose gew hrleistet sein Das mitgelieferte Netzkabel mu wie folgt verdrahtet werden Phase braun Nulleiter blau Erde gr n gelb DasGer t darf nicht mit F ssigkeiten Spritzwasser usw in Ber hrung kommen stellen Sie keine Gef e z B Kaffeetassen auf das Ger t mu fas Norme di Sicurezza Importante I Questa apparecchiatura e stata costruita in accordo alle norme di sicurezza IEC 65 Per una perfetta sicurezza ed al fine di evitare eventuali rischi di scossa elettrica o d incen
52. o not attempt to service this equipment unless you are qualified to do so WARNING Check that the correct fuses have been installed To reduce the risk of fire replace the fuses only with the same type and rating Exposed portions of the power supply are electrically hot In order to reduce the risk of electrical shock the power cord MUST be disconnected when the cover of this equipment is removed The ground terminal of the power plug is connected directly to the chassis of the unit For continued protection against electric shock a three pin power outlet that is correctly wired and earthed must be used Do not use a ground lifting adapter and never cut the ground pin on the three prong plug Dolby E Multichannel Distribution System User Manual Regulatory Notices UK Asthe colours ofthe cores in the mains lead may not correspond with the coloured markings identifying the terminals in your plug proceed as follows e The core which is coloured green and yellow must be connected to the terminal in the plug which is marked with the letter E or by the earth symbol cl or coloured green or green and yellow e The core which is coloured blue must be connected to the terminal which is marked with the letter N or coloured black e The core which is coloured brown must be connected to the terminal which is marked with the letter L or coloured red This apparatus must be earthed IEC Notices This equipment complies
53. ograms One stereo and four mono programs Two stereo and two mono programs Three stereo programs One four channel and two mono programs One four channel program and one two channel program 1 e L C R S and Lt Rt for archiving Dolby Surround soundtracks One 5 1 channel program Eight mono programs One stereo and six mono programs Two stereo and four mono programs Three stereo and two mono programs Four stereo programs One four channel and four mono programs One four channel one stereo and two mono programs One four channel and two stereo programs Two four channel programs Dolby E Multichannel Distribution System User Manual DP571 Dolby E Encoder 3 2 2 Operating Mode Enter DP571 Unit Setup Operating Mode Tom SC CH Operating Mode Operating Mode Operating Mode Operating Mode Operating Mode Operating Mode Operating Mode L Time Code Input Metadata Revert P Metadata Source AC 3 Metadata 48kHz Pull Down Frame Rate i Bit Depth Enter E enter e Enter E Enter E Enter fese Enter ese Enter fese Time Code Input Metadata Revert Metadata Source AC 3 Metadata 48kHz Pull Down Frame Rate Bit Depth LTC Last Used Y Internal Disable Disable 29 97 fps 20 bit Time Code Input Metadata Revert
54. or a discussion of the values that may need to be changed Notational Conventions The symbol separates programs within a configuration For example 5 1 2 represents one 5 1 channel and one stereo program The x symbol shows the number of a given channel format within that configuration For example 4 x 2 represents four two channel programs One configuration has three different formats 4 2 2 x 1 is one four channel one two channel and two mono programs Encoding Considerations Itis important to distinguish between configurations with the same number of channels but different program formats such as 8 x 1 and 4 x 2 Although both configurations encode eight channels 8 x 1 uses eight metadata streams while 4 x 2 uses two Increasing the number of programs with independent metadata streams decreases the number of encode decode generations possible without audible degradation Dolby E Multichannel Distribution System User Manual DP571 Dolby E Encoder Program Config Table 3 4 DP571 Program Configurations Program and Channel Explanation One 5 1 channel and two mono programs May be used for a 5 1 channel and two mono SAPs One 5 1 channel and one stereo program One of the most common configs Two channel could be stereo Dolby Surround Lt Rt or even stereo SAP Four mono programs One stereo and two mono programs Two stereo programs One four channel program LCRS Six mono pr
55. ory mentioned in this chapter The most distinguishing feature of a live event is that although a VTR may record the event for later broadcast or storage the tape cannot normally be stopped to alter encoding parameters and then restarted This is not an issue for postproduction but is a serious concern for live events Using Presets is an excellent method of changing Program Configs during an encoding session to match the metadata to the source material being encoded Pick the most appli cable program configuration for a specific task and store it as a Preset During the live event simply recall the Presets as the encoding requirements change and all associated metadata parameters follow automatically See Section 3 2 3 Presets Using the Status Port to Select Presets on page 3 4 and Using the Status Port to Select Voiceover and Switched Modes on page 4 4 for more detailed information 2 2 Dolby E Multichannel Distribution System User Manual Common Dolby E Applications 2 6 Postproduction Figure 2 1 shows a typical postproduction configuration using Dolby E The same VRef black burst signal locks all units an LTC signal slave locks a digital multitrack recorder to a digital VTR The LTC signal is also sent to the DP571 LTC Input via the loop through connector on the multitrack The DP571 and VTR have the same time code signal to resynchronize the video and audio if they are separated Connect the DP571 s Main Out to chan
56. pew u 9r1 ou seuojeJoqe qjoq Jo syewapey eye JoquiAs q eiqnop ayy pue qiog J9Y O9PIA LAN MO ure ul A ped nog 1 3sv804 jow y snyels gt E 00000 0000 eepe Ww fue ixny o EN Emo 89993 G 89993 0000 DD H qoz ct Vg 3 qioq Figure 3 2 DP571 front and back panel 3 2 Dolby E Multichannel Distribution System User Manual DP571 Dolby E Encoder 3 1 1 Digital Inputs A maximum of eight PCM channels can be sent to the Digital Inputs each with a loop through connection Video Reference An analog composite video reference signal is required for Dolby E encoding Versions 1 05 and later support two frame rates 29 97 Hz NTSC and 25 Hz PAL VITC information can also be extracted from the video reference signal If the video reference signal is not present or invalid the DP571 will not encode the Dolby E bitstream e outputs will all be muted e VRef LED will be red Vref not present or yellow Vref unequal to frame rate of Dolby E Main Output LTC Input The DP571 accepts a SMPTE LTC signal After decoding in the LTC receiver the resulting time code information is passed to the DSP subsystem PCM Delay Input When sending both encoded and non encoded channel pairs to a digital recorder the non encoded pair must be delayed to remain synchronized with the encoded signal The encoder contai
57. return to the previous menu or setting A double headed arrow in the diagrams indicates that an arrow key can select between the two settings or menus The Esc and Enter keys ascend and descend respectively one menu level They are labeled in the menu diagrams and appear as single headed arrows down for Enter and up for Esc Dolby E Multichannel Distribution System User Manual 3 2 1 Program Config Enter DP571 Unit Setup Esc Program Config Program Config 5 1 2x1 Program Config 5 142 Program Config 4x1 Program Config 2 2x1 Program Config 2 2 Program Config 4 Program Config 6x1 Program Config 2 4x1 Program Config 2x2 2x1 Program Config 3x2 Program Config 4 2x1 Program Config 4 2 Program Config 5 1 Program Config 8x1 Program Config 2 6x1 Program Config 2x2 4x1 Program Config 3x2 2x1 Program Config 4x2 Program Config 4 4x1 Program Config 4 2 2x1 Program Config 4 2x2 Program Config 4 4 Figure 3 4 Program Config menu Selecting a Program Config assigns all metadata values that best fit the most common use of that configuration Although the metadata values can be modified it is unlikely the user will need to do so See Section 3 2 4 Metadata Params f
58. rogram within a Program Config these values can still be modified see Section 3 2 4 Metadata Params Ext Override Allows local modification of the external source s metadata values External Uses the external source s Metadata without permitting local modification AC 3 Metadata Disable Does not include Dolby Digital metadata in the encoded Dolby E stream Useful only if the decoded audio will never be Dolby Digital encoded Enable This is the default setting that includes metadata in the Dolby E stream 48kHz Pull Down Disable Default value appropriate for most common VTRs Enable Allows a DP571 encoder to be used with a 30 Hz VTR operating at 29 97 Hz The lt in the display below reflects that 48 kHz Pull Down is enabled Dolby E 5 1 2 20bit Frame Rate Version 1 05 and later allows selection between two frame rates 29 97 fps NTSC and 25 fps PAL Versions prior to 1 05 offer only 29 97 fps The Vref input rate must match the selected frame rate For example if the incoming Vref signal is 29 97 Hz NTSC black burst the frame rate must be 29 97 fps otherwise the Vref LED turns from green to yellow and encoding is disrupted The DP572 does not have a frame rate setting The Vref input rate must match the frame rate of the incoming encoded stream to be properly decoded For example a DP572 that receives a 29 97 Hz Vref input will only decode a Dolby E stream encoded at 29 97 fps otherwise th
59. rr n Neutro Azul Tierra Verde A marill Launidad no debe ser expuesta a goteos o salpicaduras y no deben colocarse sobre el equipo recipientes con liquidos como tazas de cafe Viktiga Sakerhetsatgarder 8 Denna enhet uppfyller s kerhetsstandard IEC65 F r att garantera s kerheten och gardera mot eventuell elchock eller bran drisk m ste f ljande observeras e Kontrollera att sp nningsv ljaren r inst lld p korrekt n tsp nning e Konrollera att s kringarna r av r tt typ och f r r tt str mstyrka s somanvisningarna p enheten f reskriver Enheten m ste vara jordad genom anslutning till ett korrekt kopplat och jordat el uttag e El sladden som medf ljer denna enhet m ste kopplas enligt foljande Fas Brun Neutral Bl Jord Gr n Gul Enheten f r ej uts ttas f r yttre verkan samt f rem l inneh llande v tska s som kaffemuggar f r ej placeras p utrustningen e UN Belangrijk Veiligheids voorschrift NL Deze unit voldoet aan de IEC65 veiligheids standaards Voor een veilig gebruik en om het gevaar van electrische schokken en het risico van brand te vermijden dienen de volgende regels in acht te worden genomen Controleer of de spanningscaroussel op het juiste Voltage staat e Gebruik alleen zekeringen van de aangegeven typen en waarden e Aansluiting van de unit alleen aan een geaarde wandcontactdoos e De netkabel die met de unit wordt geleverd moet als volgt worden aangesloten
60. rrent status and are not used to set values Use the Setup mode menus to set new values PCM Main Frame Rate In Timecode In Metadata In gt 48 kHz 29 97 fps P 00 00 00 00 fps ENTER to View Video Ref PCM Channel D Error Stats Firmware Version 4 xd 29 97 fps y No Input P ENTER to View 1 00 Figure 4 10 DP572 status menus Dolby E Multichannel Distribution System User Manual Chapter 5 System Specifications Audio Encoding Method Dolby E Frequency Response 20 Hz 20 kHz 0 25 dB Distortion lt 0 01 at 1 kHz lt 0 02 20 Hz 20 kHz Dynamic Range gt 110 dB Sampling Rate 48 KHz Video Frame Rate 29 97 Hz NTSC 25 Hz PAL Encoding Delay 1 video frame fixed Output Data Width 20 bit 8 channels 16 bit 6 channels Dolby E Configurations User Selectable 5 1 5 1 2 5 1 1 1 4x2 3x2 8x1 6x1 Other Dolby E Concatenations 10 encode decode concatenations minimum PCM Delay Digital Audio I O Same as Dolby E encoding delay 1 video frame Four BNC female connectors AES 3ID 1995 SMPTE 276M Dolby E I O Two BNC female connectors AES 3ID 1995 SMPTE 276M PCM Delay I O Two BNC female connectors AES 3ID 1995 SMPTE 276M LTC VO BNC female connector Remote Port RS 232 8 pin female mini DIN on the front panel RS
61. s Although the Dolby E stream is carried on a standard AES pair its format is different than that ofa conventional digital audio signal The PCM audio that normally comprises a digital audio signal is encoded along with metadata and time code into the Dolby E bitstream The resulting data no longer directly represents the audio Since a standard Dolby E signal can appear to the unwitting observer as a clipped or distorted digital audio signal this section explains what to expect when measuring or monitoring a Dolby E signal For example a VTR s meters indicate a digital full scale signal when recording or play ing a Dolby E stream and the clip indicators may flash intermittently Dolby E uses the entire audio payload of an AES pair which creates the appearance of full scale audio on the VTR The Dolby E signal sounds like full scale noise when monitored through speakers or headphones this is useful to quickly verify the VTR is receiving a Dolby E signal To simplify working with these new signals and to allow for more detailed analysis Dolby Laboratories has recently introduced the DM100 Portable Audio Monitor This hand held unit displays metadata parameters see Section 3 2 4 and decodes Dolby E Dolby Digital and PCM bitstreams The decoded audio can be monitored through an internal speaker or through user supplied headphones 1 5 Dolby E Multichannel Distribution System User Manual Introduction 1 3 Connection with t
62. s for a four channel configuration are L L R R L C R C L S R S Mapping for a two channel configuration is L L R R Mapping for a single channel configuration is L C R C Figure 4 7 Headphone Map menu selected in the Headphone Prog menu System Settings Enter System Settings DP572 Unit Setup Esc m System Settings L gt Unit Address System Settings i System Settings W Unit Name Remote Baud Rate le Enter Jes Enter e enter Jes Unit Address 8280 Unit Name Dolby E Encoder Remote Baud Rate 9 6 kbps Remote Baud Rate 38 4 kbps Remote Baud Rate 19 2 kbps Figure 4 8 System Settings menu Remote control functions are not yet available for the initial Dolby E product release so this menu is useful only during firmware upgrades see the next section 4 10 Dolby E Multichannel Distribution System User Manual DP572 Dolby E Decoder 4 2 6 Firmware Upgrade 4 3 DP572 Unit Setup Firmware Upgrade Enter Esc Firmware Upgrade ENTER Yes ESC No Figure 4 9 Firmware Upgrade menu The firmware in the DP572 can be upgraded via the Remote Serial port See the docu mentation that accompanies the upgrade kit DP572 Status Mode Menu Access the Status mode menus by pressing Shift Setup These menus simply display the device s cu
63. should be set to Indicated Line Mode Pro and RF Mode Pro in all three programs should be set to either Film Standard or Film Light depending on the type of film Select the 5 1 2 program configuration for a 5 1 channel Dolby Digital film Program 1 contains a copy of the 5 1 channel master used to create the original film Program 2 can carry either an Lt Rt version ofthe film with a reduced dynamic range for the NTSC feed or a stereo SAP Since Program 2 is Dolby Surround encoded the Dolby Srnd Mode metadata parameter should be set to Indicated Line Mode Pro and RF Mode Pro in both programs should be set to either Film Standard or Film Light depending on the type of film Select the 5 1 2 x 1 program configuration to encode a 5 1 channel program and two mono SAP channels Line Mode Pro and RF Mode Pro in all three programs should be set to either Film Standard or Film Light depending on the type of film 2 1 Dolby E Multichannel Distribution System User Manual Common Dolby E Applications 2 2 2 3 24 2 5 Commercial and Interstitial Although current commercial and interstitial material is primarily two channel stereo this fast growing broadcasting sector will almost certainly catch up to film practice thereby ensuring smooth transitions between commercial and feature programs See Section 2 1 Film for the settings to use for two and 5 1 channel material News and Local Programming News and local programmi
64. tion 1 2 1 2 1 1 2 2 1 2 3 System Considerations Digital UO The digital input and output connections on the DP571 encoder and DP572 decoder may seem unfamiliar to the first time user of a digital audio device The Audio Engineering Society AES created a standard electrical interface for digital audio with a balanced XLR connector and 1100 impedance called AES3 1995 This interface was later expanded to include an unbalanced BNC connector 1 V peak to peak signal level and 75 Q impedance the new standard is known as both AES3 ID 1995 and SMPTE 276M The DP571 encoder and DP572 decoder use this new standard for both digital audio and Dolby E electrical interface connections Note These signals must be properly terminated with a 754 impedance at one point only We recommend a standard video terminator Video Reference One of Dolby E s most significant features is that the audio and video frame rates are identical The DP571 encoder and DP572 decoder both require a reference video signal to lock the audio and video at frame boundaries Standard black burst or color bars can be used as reference video if they are locked to the plant reference A passive loop through connection on the encoder and decoder can properly terminate the reference signal or distribute it to multiple devices Note This reference signal must be terminated with a 754 impedance on the last device in the signal chain Signal Characteristic
65. uide for the DP571 and DP572 This is the fastest way to begin encoding decoding The remainder of the manual examines the devices and common applications in greater detail Chapter 2 Common Dolby E Applications Emphasizes that most Dolby E applications fall into one ofthe types discussed in this chapter Each application type strongly suggests a program configuration which in turn almost entirely configures both devices Chapter 3 DP571 Dolby E Encoder and Chapter 4 DP572 Dolby E Decoder Supplies detailed hardware and menu reference information about each device Chapter 5 System Specifications Presents a complete specifications table 1 2 Dolby E Multichannel Distribution System User Manual Introduction 1 1 Unpacking and Inspection Before unpacking the unit inspect the outer carton for shipping damage If the carton shows damage inspect the unit in those areas Several accessories are provided with the unit These may include e Rack screws and washers e Power cord e BNC 75Q terminators used on Digital and Video Ref inputs Part No 79114 e Spare fuse 1 A Part No 56016 e Spare fuse 2 A used on the internal power supply Part No 56017 Hex wrench to access inside of unit Carefully remove the unit from its carton remove the plastic wrapping and place on a flat surface If there are no signs of damage proceed to Section 1 1 1 Fusing Information Fusing Information WARN

Dolby E Decoder DP572 User`s Manual

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