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Dolby Installation Guidelines

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Dolby Installation
Guidelines

S01/13621 Issue

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Summary of Contents for DP570

Page 1: ...Dolby Installation Guidelines i Dolby Installation Guidelines S01 13621 Issue 1 ...

Page 2: ...apan Branch Fuji Chuo Building 6F 2 1 7 Shintomi Chuo ku Tokyo 104 0041 Japan Telephone 81 3 5542 6160 Fax 81 3 5542 6158 Dolby Laboratories Representative Office 7 Fl Hai Xing Plaza Unit H 1 Rui Jin Road S Shanghai 200023 China Telephone 86 21 6418 1015 Fax 86 21 6418 1013 Dolby Laboratories Representative Office Suite 1208 Canway Building No 66 Nanlishi Road Xichen District Beijing 100045 China ...

Page 3: ...3 2 3 2 3 1 Dimensions 2 3 2 3 2 Audio Connections 2 4 2 3 3 Serial I O Remote 2 4 2 3 4 Auxiliary Data 2 4 2 4 DP569 2 4 2 4 1 Dimensions 2 4 2 4 2 Audio Connections 2 5 2 4 3 Vertical Interval Time Code Input 2 5 2 4 4 Linear Time Code Input 2 5 2 4 5 TTL Delay Input 2 5 2 4 6 Serial I O Remote 2 5 2 4 7 General Purpose I O 2 6 2 4 8 Auxiliary Data 2 8 2 5 DP570 2 8 2 5 1 Dimensions 2 8 2 5 2 Au...

Page 4: ... Reference 2 14 2 7 4 LTC Output 2 14 2 7 5 Serial I O Remote 2 14 2 7 6 General Purpose Input Output Status Port 2 14 2 7 7 Auxiliary Data 2 16 2 7 8 Metadata Output 2 16 2 7 9 10BASE T 2 16 2 8 DM100 2 17 2 8 1 Dimensions 2 17 2 8 2 Audio Connections 2 17 2 8 3 Video Reference 2 17 Chapter 3 Installation Issues 3 1 3 1 Venting 3 1 3 2 Timing and Delays 3 1 3 2 1 Dolby Surround 3 1 3 2 2 Dolby Di...

Page 5: ...Authoring 5 1 5 2 Monitoring Dolby E Dolby Digital and Dolby Surround Production5 1 5 2 1 Using a DP570 5 2 5 2 2 Monitoring with a DP569 and DP562 5 3 Chapter 6 Serial Communications 6 1 6 1 RS 232 Ports 6 1 6 2 RS 485 6 2 6 3 Metadata Connections 6 3 6 4 Serial Control 6 4 ...

Page 6: ...Panels of DP569 2 4 2 5 Diagram of Voiceover and Switched Output Operation 2 16 4 1 Hot Standby Operation of the DP569 4 2 5 1 Typical DVD Encoding System 5 1 5 2 Example Equipment Setup for Postproduction Studio or OB Truck 5 2 5 3 Example Equipment Setup for use with Consoles with Full Monitoring Functions 5 3 5 4 Dolby Digital Surround Monitoring 5 4 6 1 Metadata Multidrop 6 4 ...

Page 7: ...tion Card Stereo Mono Output 2 10 2 7 Pin Connections of GPI O Port 2 12 2 8 Status Port Preset Selection 2 12 2 9 Preset Mode Tally Indication on Status Port 2 13 2 10 Pin Connections for the Status Port 2 15 2 11 Status port Output Routing Mode Selection 2 15 3 1 Dolby Digital Coding and Decoding Delays 3 2 6 1 Pin Connections for 9 Pin RS 232 Ports DP562 and DP572 6 1 6 2 Pin Connections for 9 ...

Page 8: ...Dolby DMU AD DA Converter 3 1 ...

Page 9: ...d Dolby Surround Pro Logic decoding When producing material in Dolby Surround the unit allows the effects of the encode decode process to be monitored When used for monitoring Dolby Digital encoding it allows the effects of metadata to be auditioned and the various downmixes to be heard 1 2 DP563 The DP563 is a fully digital implementation of the Dolby Surround matrix encoder used in the analog SE...

Page 10: ...tal videotape digital audio tape or video server 1 7 DM100 The DM100 Bitstream Analyzer is a very useful tool for installation engineers It is a handheld portable diagnostic tool that can monitor Dolby Digital Dolby E and PCM bitstreams It can also generate test streams in any of the above formats Structure of this Document Chapter 2 of this document details the connectivity of each unit including...

Page 11: ...nnex B The digital audio outputs are 3 pin male XLR connectors The outputs are PCM in AES EBU format 5 Vp p 110Ω The analog audio outputs are balanced and use 3 pin male XLR connectors 0 dBFS 24 dBu The output impedance is 25Ω The headphone output is a inch standard audio headphone jack with 11 5 dBu maximum output into 600Ω nominal 2 2 1 Serial I O The DP562 has a rear panel RS 232 port This port...

Page 12: ...l is enabled the internal master level control is disabled Table 2 1 Pin Connections for Status Remote Port Pin Connection Comments 1 Fault Processor memory fault 2 AC 3 PCM 1 AC 3 bitstream 0 Non AC 3 3 AC 3 CRC Error AC 3 CRC error encountered during decode 4 AC 3 CRC Error 5 V Pin 3 and pin 4 is closed for 100 ms when a CRC error is detected 5 Ground and pot low 6 Pot wiper Controls remote leve...

Page 13: ...ctions and Dimensions 2 3 Figure 2 2 Test Box Schematic 2 3 DP563 Figure 2 3 Front and Back Panels of the DP563 2 3 1 Dimensions The DP563 occupies one rack unit and measures 44 483 324 mm 1 75 19 12 75 inches Its net weight is 4 6 kg 10 1 lb ...

Page 14: ... output is 75Ω unbalanced with signal levels compliant with AES3 id 1995 2 3 3 Serial I O Remote The DP563 allows remote control via the front panel RS 232 or rear panel RS 485 ports It is able to communicate at rates of 9 6 kbps 19 2 kbps or 38 4 kbps The unit address can be any discrete tributary address as specified in SMPTE RP 113 1996 See Section 6 4 for further information The default addres...

Page 15: ...r details 2 4 3 Vertical Interval Time Code Input If using SMPTE vertical interval time code VITC connect the composite video signal to the VITC In BNC connector using a 75Ω shielded cable There is a loop through connection that will require a 75Ω termination if this facility is not being used 2 4 4 Linear Time Code Input If using SMPTE linear time code LTC connect the LTC signal to the LTC input ...

Page 16: ...eset 3 8 User Preset 4 Select User Preset 4 9 Ground Pin 1 Connecting pin 1 to ground pin 9 will place the unit into Bypass mode This will occur regardless of the setting of the Bypass mode parameter in the I O control menu However enabling bypass in the menu will also place the unit into bypass regardless of the presence of this connection Pins 2 4 In order to select one of these modes a high to ...

Page 17: ...s that both sources are valid i e locked and stable A high level does not guarantee a valid output only that the input state is valid A low level will imply that a valid output is not being produced Pin 3 This output reflects the status of Pass Through mode A high level indicates that pass through is not active A low level indicates that pass through is active i e that a valid encoded bitstream is...

Page 18: ...tions The digital audio inputs and Lt Rt input are provided on female BNC connectors The Lt Rt input has a loop through connection that requires 75Ω termination if this facility is not being used The inputs should be compliant with AES3 id 1995 There are two sets of digital audio outputs One of the sets is from the output of the input router the other set is from the emulator The digital audio out...

Page 19: ... 24 Left Out 12 Left Out 25 L Ground 13 Table 2 5 Pin Connections for the Cat No 548 Analog Option Card Stereo Mono Output Pin Connection Pin Connection 1 Digital Ground 14 2 15 3 16 4 17 5 18 Solo In R 6 Solo In R 19 SR Ground 7 Solo In L 20 Solo In L 8 SL Ground 21 Mono Out 9 Mono Out 22 M Ground 10 Right Stereo Out 23 Right Stereo Out 11 R Ground 24 Left Stereo Out 12 Left Stereo Out 25 L Groun...

Page 20: ...d Stereo Mono Output Pin Function Pin Function 1 5 V 150 mA 7 19 User Defined Outputs 2 Fault Output 20 Encoder A Input 3 Error Output 21 Encoder B Input 4 User Defined Output 22 Encoder Present Input 5 Solo Tally Output 23 36 User Defined Inputs 6 Solo Control Input 37 Digital ground 2 5 6 Metadata Inputs The metadata input ports are RS 485 ports These can be used for the input of metadata from a...

Page 21: ...equipment terminate them with a standard 75Ω video terminator The PCM delay input is of the same specification except that no termination is required as the PCM output is electrically isolated The main outputs and the PCM delay output are on female BNC connectors The output is formatted in accordance with AES3 id 1995 The nominal output impedance for these connectors is 75Ω The main outputs are el...

Page 22: ...t 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 Pins 1 and 6 Presets 1 3 generate corresponding outputs on the status port that can be used to indicate selection of a preset via the status port serial remote port in future versions or the front panel Table 2 8 Status Port Preset Selection Preset...

Page 23: ... 8 Metadata Input The metadata input port is an RS 485 port This can be used for the input of metadata from a DP572 or other metadata source See Section 5 2 for pin assignments 2 6 9 10BASE T This port will be implemented in future versions 2 7 DP572 Figure 2 7 Front and Back Panels of the DP572 2 7 1 Dimensions The DP572 occupies one rack unit and measures 44 483 324 mm 1 75 19 12 75 inches Its n...

Page 24: ...igital outputs are electrically isolated and therefore no termination is required The headphone output is a inch standard audio headphone jack with 11 5 dBu maximum output into 600Ω nominal 2 7 3 Video Reference A composite video signal should be connected to the video ref BNC connector using a 75Ω shielded cable There is a loop through connection that will require a 75Ω termination if this facili...

Page 25: ... regarding the current condition of the unit A 1 corresponds to a high level on the corresponding pin Pins 7 8 These can be used to select Voiceover and Switched Out modes 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 ...

Page 26: ...M audio The DP572 can also be used to insert voice overs This is advantageous because recording the voice over might otherwise require 5 1 channel editing facilities 2 7 7 Auxiliary Data The Auxiliary Data port is a 9 pin male RS 232 port that may be used for future enhancements See Section 5 2 for pin assignments 2 7 8 Metadata Output The metadata output port is an RS 485 port This can be used fo...

Page 27: ... XLR BNC or Toslink connectors The female XLR connection has an internal 110Ω termination and the female BNC input has an internal 75Ω termination The male XLR output has 110Ω impedance and the female BNC output has 75Ω impedance 2 8 3 Video Reference A composite video signal can be connected to the video reference input This connection is a female phono connector There is an internal 75Ω terminat...

Page 28: ...Dolby DMU AD DA Converter 3 1 ...

Page 29: ...placed directly above or below other rack mount gear 3 2 Timing and Delays Encoding and decoding adds delay to the audio data In audio only situations this may be of little consequence but where the audio has associated video material care should be taken to ensure that these delays are accounted for This can be done by adding the equivalent delay to the video stream by compensating for the delay ...

Page 30: ...hen the decoding delay will vary depending on the rate of the incoming Dolby E bitstream The Dolby E units also have a PCM delay output This can be used to route the PCM input to the PCM output adding the same delay as is being added by the Dolby E encode process This can be used to keep a pair of un encoded audio channels such as channels three and four from a VTR in sync with the encoded audio 3...

Page 31: ...erating status of the units can be assessed by the control using the GPI Os 4 1 DP562 The DP562 features general system alarm and AC 3 decoding status signals as outputs on the status remote port For further details of the connections of this port see Section 2 2 2 4 2 DP563 There are no GPI O ports on this unit However the DP563 will only stop encoding if there is no valid audio input on channels...

Page 32: ...ctions on the GP output for fault and error conditions pins 2 and 3 respectively For critical live applications the system design should be such that the DP570 is only part of the monitor path or that these pins can be used to trigger routing to bypass the main audio around the DP570 4 5 DP571 The status port can be used to control a router console or other switching device in the event of a unit ...

Page 33: ...hows the audio equipment in a typical DVD encoding system Figure 5 1 Typical DVD Encoding System Dolby Laboratories can also supply an interface kit to aid the installation of this system into studios that use either all balanced or unbalanced digital audio connections This kit is called the DVD Audio cable kit Cat No 541 and contains four BNC cables along with four impedance transformers Three of...

Page 34: ...ll be used so these are included as a couple of typical designs Figure 5 2 Example Equipment Setup for Postproduction Studio or OB Truck Figure 5 2 shows an example where the program audio is fed to the DP570 The channel order of the audio can be modified using the DP570 s router before being fed to the DP563 and DP571 With the analog option fitted the DP570 can be used to perform many of the moni...

Page 35: ...9 and DP562 If a DP570 is not available it is possible to use a DP562 along with a DP569 and DP563 to perform similar monitoring functions The setup shown in Figure 5 4 shows how this can be done No external switching equipment is required as either a serial remote connection a GPI O connection or the front panel can be used to control the switching However due to the coding delay of the Dolby Dig...

Page 36: ...Dolby Installation Guidelines Common Applications 5 4 Figure 5 4 Dolby Digital Surround Monitoring ...

Page 37: ...e connections are shown in the tables below For information about the remote protocol contact Dolby Laboratories 6 1 RS 232 Ports DP562 Serial I O female DP572 Auxiliary Data male Table 6 1 Pin Connections for 9 Pin RS 232 Ports DP562 and DP572 Pin Connection Comment 1 DCD Direct connection to DTR DSR and CTS 2 RX Asynchronous data out 3 TX Asynchronous data in 4 DTR Direct connection to DCD DSR a...

Page 38: ...resistor to 5 V 9 NC RS 232 Using a Female 8 Pin Mini DIN Connector This connection is used for the front panel remote connections Table 6 3 Pin Connections for 8 Pin RS 232 Ports Pin Connection Comment 1 NC 2 NC 3 RX Asynchronous data out 4 Ground 5 TX Asynchronous data in 6 NC 7 NC 8 Sense Ground to select front panel remote port 6 2 RS 485 Back panel remote connections except DP562 DP563 Auxili...

Page 39: ...8 TX A Asynchronous data out 9 Shield chassis ground 6 3 Metadata Connections Metadata is data that relates to audio data It is carried in both Dolby E and Dolby Digital bitstreams The dialogue level is given here as an example of a metadata parameter The dialogue level dialnorm value represents the average level of the audio It is referenced to a level of digital full scale It represents this ave...

Page 40: ...ure 6 1 Each DP569 can be controlled by a separate set of parameters in the metadata stream The set of parameters is referred to as a program Metadata DP569 5 1 DP569 Two Channel Two Channel Dolby Digital Output 5 1 Dolby Digital Output Lt Rt L R C LFE Ls Rs DP572 Figure 6 1 Metadata Multidrop 6 4 Serial Control Serial control is available for a number of Dolby pro audio products Each product requ...

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