Dolby Laboratories DP569 User Manual
Model DP569
Dolby Digital
Multichannel Audio Encoder
User’s Manual
Issue 3 Part Number 91572
Corporate Headquarters
Dolby Laboratories, Inc.
100 Potrero Avenue
San Francisco, CA 94103-4813
Telephone 415-558-0200
Fax 415-863-1373
Email info@dolby.com
www.dolby.com
European Headquarters
Dolby Laboratories, Inc.
Wootton Bassett
Wiltshire, SN4 8QJ, England
Telephone (44) 1793-842100
Fax (44) 1793-842101
Dolby Laboratories, Inc.
WARNING:
Troubleshooting must be performed by trained technicians. Do not attempt
to service this equipment unless you are qualified to do so.
Check that the correct fuses have been installed. To reduce the risk of fire,
replace the fuses only with the same type and rating. See page xi.
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 material), 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 damages.
Dolby, Pro Logic, Surround EX, AC-3, and the double-D symbol are trademarks of Dolby Laboratories. All other
trademarks remain the property of their respective owners.
2001 Dolby Laboratories, Inc. All rights reserved.
S01/13793/13940 Issue 3, Part Number 91572
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Model DP569 User’s Manual
Table of Contents
List of Figures .............................................................................................................. vii
List of Tables............................................................................................................... viii
Regulatory Notices and Fuse Information ..................................................................ix
Chapter 1 Introduction .......................................................................................... 1-1
Chapter 2 Setting Up ............................................................................................. 2-1
2.1 Unpacking.................................................................................... 2-1
2.2 System Considerations................................................................ 2-1
2.2.1 Jumpers........................................................................... 2-1
2.2.2 Digital Input and Output ................................................... 2-2
2.3 Front Panel .................................................................................. 2-3
2.3.1 Front-Panel Interface ....................................................... 2-3
2.3.2 Contrast Adjust ................................................................ 2-3
2.3.3 Preset Buttons ................................................................. 2-4
2.4 Status Menu................................................................................. 2-4
2.5 Setup Menu ................................................................................. 2-4
2.5.1 Selecting Parameters ...................................................... 2-5
2.5.2 Entering Text ................................................................... 2-6
2.6 Front-Panel Indicators ................................................................. 2-7
2.6.1 Digital Input Status LEDs................................................. 2-7
2.6.2 Fault, Error, Test, Ref In, Remote, and Timecode LEDs ... 2-7
2.6.3 Channel Activity LEDs ..................................................... 2-8
2.6.4 Remote Connector........................................................... 2-8
Chapter 3 Applications.......................................................................................... 3-1
3.1 Digital Television Broadcasting.................................................... 3-1
3.1.1 Basic Integration with an MPEG Encoder or Multiplexer ... 3-1
3.1.2 Integration within a Dolby E System ................................ 3-2
3.1.3 Metadata Reversion......................................................... 3-3
3.1.4 Coding Delay and Audio/Video Synchronization.............. 3-3
3.1.5 Alarms and Monitoring..................................................... 3-4
3.1.6 Quick Start for Digital Television Broadcasting ................ 3-4
3.2 DVD Authoring............................................................................. 3-5
3.2.1 Overview.......................................................................... 3-5
3.2.2 Quick Start for DVD Authoring ......................................... 3-6
Chapter 4 Front-Panel Menus ............................................................................... 4-1
4.1 Status Menu................................................................................. 4-1
4.2 Setup Menu ................................................................................. 4-2
4.2.1 System Settings Operating Mode .................................... 4-2
4.2.2 Metadata Control ............................................................. 4-3
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Model DP569 User’s Manual
4.2.3 Metadata Params ............................................................ 4-4
4.2.4 User Presets .................................................................... 4-5
4.2.5 I/O Control ....................................................................... 4-6
4.2.6 System Settings............................................................... 4-9
Chapter 5 DolbyRemote ........................................................................................ 5-1
5.1 DolbyRemote Overview ............................................................... 5-1
5.2 Installation.................................................................................... 5-1
5.2.1 PC System Requirements................................................ 5-1
5.2.2 Software Installation ........................................................ 5-1
5.2.3 Serial Cable Installation ................................................... 5-2
5.2.4 DP569 Setup ................................................................... 5-3
5.3 Starting DolbyRemote.................................................................. 5-3
5.3.1 Device Type..................................................................... 5-3
5.3.2 Communications .............................................................. 5-3
5.3.3 Adding or Removing Additional Devices .......................... 5-5
5.4 General Operation ....................................................................... 5-5
5.4.1 Saving and Restoring Configurations .............................. 5-5
5.4.2 Exporting Configurations.................................................. 5-5
5.5 Common Setup Problems............................................................ 5-5
5.6 Display Overview ......................................................................... 5-6
5.6.1 Audio Service Parameters ............................................... 5-7
5.6.2 Preprocessing.................................................................. 5-8
5.6.3 Bitstream Info................................................................... 5-8
5.6.4 Dual Mono ....................................................................... 5-9
5.6.5 Input and Output Settings and Reference Input............... 5-9
5.6.6 Presets .......................................................................... 5-10
5.6.7 Timecode Parameters ................................................... 5-11
Chapter 6 Specifications ....................................................................................... 6-1
6.1 System Block Diagram ................................................................ 6-1
6.2 Connections................................................................................. 6-1
6.2.1 Digital Audio Connections................................................ 6-2
6.2.2 Vertical Interval Timecode Input (VITC In) ....................... 6-2
6.2.3 Delay Control Input (TTL Delay) ...................................... 6-2
6.2.4 Linear Timecode Input ..................................................... 6-2
6.2.5 Metadata Serial Port ........................................................ 6-3
6.2.6 Rear Panel Remote Control Serial Port (Remote) ........... 6-3
6.2.7 Front Panel Remote Control Serial Port (Remote)........... 6-4
6.2.8 General Purpose Control Input Port (GPI/O In) ............... 6-4
6.2.9 General Purpose Status Output Port (GP I/O Out) .......... 6-5
6.3 Mechanical Specifications............................................................ 6-5
6.4 Environmental Specifications....................................................... 6-5
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Model DP569 User’s Manual
Appendix A Metadata ................................................................................................A-1
A.1 Metadata Overview...................................................................... A-1
A.2 Dialogue Level .............................................................................A-4
A.3 Dynamic Range Control............................................................... A-6
A.3.1 Line Mode........................................................................ A-7
A.3.2 RF Mode.......................................................................... A-7
A.3.3 Dynamic Range Control Profiles...................................... A-8
A.4 Downmixing ................................................................................. A-9
A.5 Parameter Definitions ................................................................ A-11
A.5.1 Universal Parameters .................................................... A-12
A.5.2 Extended Bitstream Information Parameters ................. A-19
A.6 Metadata Combinations............................................................. A-22
Appendix B SMPTE Time Stamp ..............................................................................B-1
Appendix C Factory Default Presets ........................................................................C-1
Appendix D Error Messages .....................................................................................D-1
v
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Model DP569 User’s Manual
List of Figures
2-1 Jumper Locations............................................................................................ 2-2
2-2 DP569 Front Panel.......................................................................................... 2-3
2-3 Front-Panel Navigation Buttons ...................................................................... 2-3
2-4 Preset and Program Buttons........................................................................... 2-4
2-5 Front-Panel Indicators..................................................................................... 2-7
3-1 DP569 Integrated with a Multiplexer ............................................................... 3-2
3-2 Connection Between a DP569 and DP572 ..................................................... 3-3
3-3 Hot-Standby Operation of the DP569 ............................................................. 3-4
3-4 DVD Encoding System Block Diagram ........................................................... 3-6
5-1 DolbyRemote Open Device Window............................................................... 5-3
5-2 DolbyRemote Window..................................................................................... 5-4
5-3 Controlling Two Encoders ............................................................................... 5-5
5-4 Audio Service Parameters .............................................................................. 5-7
5-5 Encoder Stop and Start Buttons...................................................................... 5-7
5-6 Preprocessing Tab .......................................................................................... 5-8
5-7 Bitstream Info Tab........................................................................................... 5-8
5-8 Dual Mono Tab ............................................................................................... 5-9
5-9 Input/Output Tab ............................................................................................. 5-9
5-10 Reference Input ............................................................................................ 5-10
5-11 Presets Tab................................................................................................... 5-10
5-12 Timecode Tab ............................................................................................... 5-11
6-1 System Block Diagram.................................................................................... 6-1
6-2 DP569 Rear Panel .......................................................................................... 6-1
A-1 Metadata Flow from Production to Consumer................................................. A-3
A-2 DRC Profile Pattern......................................................................................... A-8
B-1 Encoding Audio with Timecode....................................................................... B-1
B-2 Time Stamps and AC-3 Frames in the IEC958 Datastream............................ B-2
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Model DP569 User’s Manual
List of Tables
2-1 Status Menu Navigation Buttons..................................................................... 2-4
2-2 Setup Menu Navigation Buttons...................................................................... 2-5
2-3 Commands that Exit the Setup Menu.............................................................. 2-5
2-4 Navigation in Text Entry Menu ........................................................................ 2-6
2-5 Digital Input LED States .................................................................................. 2-7
2-6 Status LED States........................................................................................... 2-7
2-7 Input Channel Activity LED States .................................................................. 2-8
4-1 Metadata Params Submenus.......................................................................... 4-4
4-2 Coding Delay .................................................................................................. 4-8
6-1 Linear Timecode Input Pins ............................................................................ 6-2
6-2 Metadata Serial Port Pin-Outs ........................................................................ 6-3
6-3 Rear Panel Remote Control Serial Port Pin-Outs ........................................... 6-3
6-4 Front Panel Remote Control Serial Port Pin-Outs........................................... 6-4
6-5 General Purpose Control Input Port Pin-Outs ................................................. 6-4
6-6 General Purpose Status Output Port Pin-Outs................................................ 6-5
6-7 Mechanical Specifications............................................................................... 6-5
6-8 Environmental Specifications .......................................................................... 6-5
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Model DP569 User’s Manual
Regulatory Notices and Fuse Information
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 frequency 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
WARNING:
Exposed portions of the power supply assembly are electrically "hot". In order to reduce the risk
of electrical shock, the power cord MUST be disconnected when the power supply assembly 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 correctly wired and grounded (earthed) threepin power outlet must be used. Do not use a ground-lifting
adapter and never cut the ground pin on the three-prong plug.
Troubleshooting must be performed by a trained technician. Do not attempt
to service this equipment unless you are qualified to do so.
Check that the correct fuses have been installed. To reduce the risk of fire,
replace only with fuses of the same type and rating.
UK
The power cord Dolby part 92021 supplied for use in Europe is not suitable for use in the UK. To use
the cord in the UK cut off the CEE7/7 plug and replace with an approved BS 1363 13A plug:
• The core that is coloured green and yellow must be connected to the terminal in the plug
identified by the letter E or by the earth symbol
or coloured green or green and yellow.
• The core that is coloured blue must be connected to the terminal that is marked with the letter
N or coloured black.
• The core that is coloured brown must be connected to the terminal that is marked with the
letter L or coloured red.
• This apparatus must be earthed.
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Model DP569 User’s Manual
EU
This equipment complies with the EMC requirements of EN55103-1 and EN55103-2 when
operated in an E2 environment in accordance with this manual.
IMPORTANT SAFETY NOTICE
This unit complies with the safety standard EN60065. The unit shall not be exposed to dripping or splashing
and no objects filled with liquids, such as coffee cups, shall be placed on the equipment. To ensure safe
operation and to guard against potential shock hazard or risk of fire, the following must be observed:
o Ensure that your mains supply is in the correct range for the input power requirement of the unit.
o Ensure fuses fitted are the correct rating and type as marked on the unit.
o The unit must be earthed by connecting to a correctly wired and earthed power outlet.
o The power cord supplied with this unit must be wired as follows:
Live—Brown Neutral—Blue Earth—Green/Yellow
IMPORTANT – NOTE DE SECURITE
Ce materiel est conforme à la norme EN60065. Ne pas exposer cet appareil aux éclaboussures ou aux gouttes
de liquide. Ne pas poser d'objets remplis de liquide, tels que des tasses de café, sur l'appareil. Pour vous
assurer d'un fonctionnement sans danger et de prévenir
tout choc électrique ou tout risque d'incendie, veillez à observer les recommandations suivantes.
o Le selecteur de tension doit être placé sur la valeur correspondante à votre alimentation réseau.
o Les fusibles doivent correspondre à la valeur indiquée sur le materiel.
o Le materiel doit être correctement relié à la terre.
o Le cordon secteur livré avec le materiel doit être cablé de la manière suivante:
Phase—Brun Neutre—Bleu Terre—Vert/Jaune
WICHTIGER SICHERHEITSHINWEIS
Dieses Gerät entspricht der Sicherheitsnorm EN60065. Das Gerät darf nicht mit Flüssigkeiten (Spritzwasser
usw.) in Berührung kommen; stellen Sie keine Gefäße, z.B. Kaffeetassen, auf das Gerät. Für das sichere
Funktionieren des Gerätes und zur Unfallverhütung (elektrischer Schlag, Feuer) sind die folgenden Regeln
unbedingt einzuhalten:
o Der Spannungswähler muß auf Ihre Netzspannung eingestellt sein.
o Die Sicherungen müssen in Typ und Stromwert mit den Angaben auf dem Gerät übereinstimmen.
o Die Erdung des Gerätes muß über eine geerdete Steckdose gewährleistet sein.
o Das mitgelieferte Netzkabel muß wie folgt verdrahtet werden:
Phase—braun Nulleiter—blau Erde—grün/gelb
NORME DI SICUREZZA – IMPORTANTE
Questa apparecchiatura è stata costruita in accordo alle norme di sicurezza EN60065. Il prodotto non deve
essere sottoposto a schizzi, spruzzi e gocciolamenti, e nessun tipo di oggetto riempito con liquidi, come ad
esempio tazze di caffè, deve essere appoggiato sul dispositivo. Per una perfetta sicurezza ed al fine di evitare
eventuali rischi di scossa êlettrica o d'incendio vanno osservate le seguenti misure di sicurezza:
o Assicurarsi che il selettore di cambio tensione sia posizionato sul valore corretto.
o Assicurarsi che la portata ed il tipo di fusibili siano quelli prescritti dalla casa costruttrice.
o L'apparecchiatura deve avere un collegamento di messa a terra ben eseguito; anche la connessione rete deve
avere un collegamento a terra.
o Il cavo di alimentazione a corredo dell'apparecchiatura deve essere collegato come segue:
Filo tensione—Marrone Neutro—Blu Massa—Verde/Giallo
AVISO IMPORTANTE DE SEGURIDAD
Esta unidad cumple con la norma de seguridad EN60065. La unidad no debe ser expuesta a goteos o
salpicaduras y no deben colocarse sobre el equipo recipientes con liquidos, como tazas de cafe. Para
asegurarse un funcionamiento seguro y prevenir cualquier posible peligro de descarga o riesgo de incendio, se
han de observar las siguientes precauciones:
o Asegúrese que el selector de tensión esté ajustado a la tensión correcta para su alimentación.
o Asegúrese que los fusibles colocados son del tipo y valor correctos, tal como se marca en la unidad.
o La unidad debe ser puesta a tierra, conectándola a un conector de red correctamente cableado y puesto a tierra.
o El cable de red suministrado con esta unidad, debe ser cableado como sigue:
Vivo—Marrón Neutro—Azul Tierra—Verde/Amarillo
GB
F
D
I
E
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Model DP569 User’s Manual
VIKTIGA SÄKERHETSÅTGÄRDER!
Denna enhet uppfyller säkerhetsstandard EN60065. Enheten får ej utsättas för yttre åverkan samt föremål
innehållande vätska, såsom kaffemuggar, får ej placeras på utrustningen." För att garantera säkerheten och
gardera mot eventuell elchock eller brandrisk, måste följande observeras:
o Kontrollera att spänningsväljaren är inställd på korrekt nätspänning.
o Konrollera att säkringarna är av rätt typ och för rätt strömstyrka så som anvisningarna på enheten föreskriver.
o Enheten måste vara jordad genom anslutning till ett korrekt kopplat och jordat el-uttag.
o El-sladden som medföljer denna enhet måste kopplas enligt foljande:
Fas—Brun Neutral—Blå Jord—Grön/Gul
BELANGRIJK VEILIGHEIDS-VOORSCHRIFT:
Deze unit voldoet aan de EN60065 veiligheids-standaards. Dit apparaat 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. 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:
o Controleer of de spanningscaroussel op het juiste Voltage staat.
o Gebruik alleen zekeringen van de aangegeven typen en waarden.
o Aansluiting van de unit alleen aan een geaarde wandcontactdoos.
o De netkabel die met de unit wordt geleverd, moet als volgt worden aangesloten:
Fase—Bruin Nul—Blauw Aarde—Groen/Geel
S
NL
Fuse Information
WARNING:
To reduce the risk of fire, replace fuses only with the same type and rating.
The 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 Hz and 60 Hz.
Check Main Fuse
The Main fuse rating is:
1 Amp, 250 V, 20 mm, time-lag fuse (for all operating voltages)
WARNING:
1. Open the fuse compartment door in the AC power input housing with a small flat-blade
screwdriver (see figure next page). Carefully pull out the fuse carrier.
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.
2. Check that the fuse has the correct rating. The fuse carrier must be inserted into the
compartment with the orientation shown in the figure below. Do not force the carrier into the
compartment or both could be damaged.
3. Snap the fuse compartment door closed.
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Model DP569 User’s Manual
Checking the Main Fuse
Internal Fuse
The switching power supply contains a separate fuse. Most fault conditions should be protected
by the main fuse.
If you find it necessary to replace the internal fuse, be certain to replace it with a fuse of the same
type and rating as printed on the switching power supply board.
xii
Model DP569 User’s Manual
Chapter 1
Introduction
The Dolby DP569 is the reference Dolby Digital multichannel audio encoder. It
supports encoded bit rates from 56 to 640 kbps and channel configurations from
mono to 5.1-channel surround sound. The DP569 is intended for digital TV, cable,
and disc authoring applications, including automated broadcast installations and
mastering for DVD and other recorded media.
The DP569 provides three pairs of AES3 digital audio inputs and a single AES3
output. A separate AES3 input may be used for a clock reference signal. Previously
encoded Dolby Digital audio bitstreams pass through unchanged—automatically, if
the DP569’s bitstream detection feature is activated. Matrix encoding on Dolby
Surround input signals also remains unaffected.
EBU/SMPTE LTC and VITC timecode inputs make it possible to start and stop the
encoder accurately to create separate program segments and soundtrack files for disc
authoring. The DP569 can also derive the time stamps required for A/V synchronization.
The DP569 supports all metadata parameters, including the flag to indicate material
encoded in Dolby Digital Surround EX. An automatic data rate setting allows the output
data rate to follow the number of encoded channels dynamically for broadcast
applications.
The rear-panel Metadata connector provides external metadata input from other
Dolby products (such as a Dolby E decoder). Two additional connectors are provided
for general-purpose I/O signals, including status and control signals. Fault-monitoring
circuits warn of actual or potential system failure, and bypass connections enable a
hot-standby mode for broadcast installations.
The DP569’s front panel features an alphanumeric display showing status parameters
and tri-color LEDs indicating channel activity. Controls include an elastomeric
keypad for menu navigation and preset recall. Front- and rear-panel serial interfaces,
along with supplied application software, make it possible to configure and control
the DP569 from Windows 95/98/2000/NT-equipped PCs or other remote devices.
1-1
l
This chapter covers all general connection and installation requirements for the DP569.
2.1 Unpacking
Before unpacking the DP569, 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.
• A power cord (US style)
Model DP569 User’s Manual
Chapter 2
Setting Up
• Floppy disks containing the DolbyRemote software
• A serial connection cable for the front-panel RS-232 port
• A bag containing BNC 75Ω terminators, rack-mount screws, washers, and
fuses
• A foldout Quick Start Guide and this User’s Manual
2.2 System Considerations
2.2.1 Jumpers
The Model DP569 allows you to choose options that are configured by internal jumpers.
Factory default settings are shown in Figure 2-1, these are suitable for most installations.
To gain access to these jumpers, remove the top cover of the unit as follows:
WARNING:
The power to the DP569 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 and that a suitably qualified person is
performing this task.
1. Remove the 12 screws securing the top cover to the chassis (use the supplied
hex wrench to remove the three screws on the upper front panel).
Note: The front panel is attached to the chassis by means of three screws at the
lower end of the front panel. Do not remove these screws.
2-1
Model DP569 User’s Manual Setting Up
2. Gently lift the top cover upward and towards the rear. Carefully set aside.
3. Reverse the above procedure when re-assembling the unit.
J40
Signal Ground to
Chassis Ground Link
Open
Linked
J31J32J40J41
Aux Data Output
Ter m in a ti o n
Aux Data Input
Te rm in a ti o n
Remote Output
Ter m in a ti o n
Remote Input
Te rm in a ti o n
Ter m in a te d
Not Terminated
Not Used
Figure 2-1 Jumper Locations
2.2.2 Digital Input and Output
The digital input and output connections on the DP569 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 110Ω impedance called AES3-1995. This interface was later expanded
to include an unbalanced BNC connector, 1 V peak-to-peak signal level, and 75Ω
impedance; the new standard is known as both AES3-ID-1995 and SMPTE-276M.
The DP569 uses this new standard.
J34
Te rm i n at e d
J30 J25 J26 J28
Ref
Input
Dig 1/2
Input
Not Terminated
Dig 3/4
Input
Dig 5/6
Input
Note: These signals must be properly terminated with a 75Ω impedance on the last
device in the signal chain. External 75Ω terminations for standard installations
are supplied within the packing kit for the DP569.
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Model DP569 User’s Manual Setting Up
2.3 Front Panel
The Model DP569 front-panel interface consists of a two-line alphanumeric liquid
crystal display (LCD), a set of user-input buttons, a set of dedicated LED status
indicators, and a remote port. Please see Figure 2-2 for the front-panel illustration.
Figure 2-2 DP569 Front Panel
2.3.1 Front-Panel Interface
The menu system has two independent structures: setup and status. The setup menu
lets you configure the DP569 to suit your environmental and program requirements,
and the status menu displays information regarding the operating status and the
condition of input signals.
Navigation Buttons
The eight buttons closest to the display window control navigation through the menus
and selection of parameters within menu screens.
Figure 2-3 Front-Panel Navigation Buttons
To select the function listed above or below a button, first press Shift, then the
associated button. For example, to select Remote, press Shift, ←. Do not hold down
Shift while pressing the second button.
Insert and Delete have no impact except in text entry menus. For details on text
entry, see Section 2.5.2, Entering Text.
2.3.2 Contrast Adjust
Press Shift, ↓ to access the contrast control.
Use the arrow buttons to adjust the contrast on the LCD. Press Enter or Esc to return
to the previous menu.
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Model DP569 User’s Manual Setting Up
2.3.3 Preset Buttons
The second group of buttons allows you to quickly select existing presets.
Figure 2-4 Preset and Program Buttons
To select a preset, press the appropriate Preset button. A table of factory default
presets can be found in Appendix C. Presets 28–32 are copied to presets 1–5 when
shipped from the factory.
2.4 Status Menu
To navigate the status menu, use the front-panel navigation buttons as shown in
Table 2-1.
Table 2-1 Status Menu Navigation Buttons
Command Result
← or ↑
↓ or →
Esc
2.5 Setup Menu
To navigate the setup menu, use the front-panel navigation buttons as shown in
Table 2-2.
Displays the previous status menu
Displays the next status menu
Displays main status menu
2-4
Model DP569 User’s Manual Setting Up
Table 2-2 Setup Menu Navigation Buttons
Command Result
← or ↑
↓ or →
Enter
Esc
Displays the previous menu item available on line 2 of the display.
Displays the next menu item available on line 2 of the display.
Enters the menu item on line 2 of the display; changes function
status and menu display accordingly.
Displays the next higher menu level. If you have changed the
display from the current parameter value without pressing Enter,
Esc returns display to current parameter value.
These commands and results remain constant throughout the setup menu except
during text entry. For details on text entry, see Section 2.5.2, Entering Text.
The commands in Table 2-3 exit the setup menu. (If you are in edit mode of a
parameter, the Status key and the Remote keys do not respond.)
Table 2-3 Commands that Exit the Setup Menu
Command Result
Status
Remote
Displays current status menu
Engages the remote control and
displays the main status menu
To return to the setup menu, press Setup. If you engage the remote, to use the front-panel
status menu you must first disengage the remote by pressing Shift, ←, then Setup.
2.5.1 Selecting Parameters
When line 2 of the display includes a flashing cursor, the parameter displayed on that
line is not active. Pressing Enter activates that parameter. Pressing Esc while the
cursor is flashing returns line 2 of the display to the active parameter for that menu.
Example:
Clock Source
Internal 48kHz
Press Enter to activate the Clock Source setting. Press Esc to return the display to the
active status:
with flashing cursor
Clock Source
Digital Input
without cursor
If you press Enter from the active status display, there is no change. If you press Esc,
the next higher menu level displays:
2-5
Model DP569 User’s Manual Setting Up
I/O Control
Clock Source
2.5.2 Entering Text
In certain situations you will be prompted to enter text. In the text entry window,
Enter Name
RESET 6
P
the first line prompts you to enter text. The second line displays the current text for
the parameter or, if no text is yet defined, a default text string. An underline cursor
appears under the first character in the string.
Note: Do not use more than 12 characters, including spaces, for a preset name.
Button functions in Text Entry mode are described in Table 2-4.
Table 2-4 Navigation in Text Entry Menu
Command Result
← or →
↑
↓
Enter
Esc
Insert
Delete
Remote
Moves the cursor to the left or right
Displays the next character in the character set
Displays the previous character in the character set
Saves the text on line 2 temporarily, pending confirmation; changes
display to confirmation dialog
Returns text on line 2 to initial display; if text is unmodified,
displays the next higher menu level
Places a blank space at the cursor location; if there are characters to
the right of the cursor, moves all characters one space to the right
Deletes the character at the cursor location
Engages the remote control and displays the main status menu
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Model DP569 User’s Manual Setting Up
2.6 Front-Panel Indicators
Figure 2-5 Front-Panel Indicators
The front-panel LED indicators provide information on the operational state of the
DP569.
2.6.1 Digital Input Status LEDs
The front panel has three status LEDs for audio inputs Digital In 1/2, 3/4, and 5/6.
Each indicates if its respective input is in use and, if so, if it is valid.
Bypass mode does not affect the function of the status LEDs.
Table 2-5 Digital Input LED States
State Description
Off Input is unused.
Green Input is in use and a valid input is detected.
Red Input is required, but invalid or not present.
2.6.2 Fault, Error, Test, Ref In, Remote, and Timecode LEDs
Table 2-6 Status LED States
LED State Description
Fault
Error
Test
Off PSU and processor status OK.
Red PSU or processor/memory fault.
Off No operational errors are detected by the DP569.
Red One or more operational errors are detected and the DP569 output is not valid.
Off Normal operation.
Red Test tone output is enabled. Audio from the system inputs is ignored.
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Model DP569 User’s Manual Setting Up
LED State Description
Off The Ref In input is not selected.
Ref In
Remote
Green The Ref In input is required and locked without errors.
Red The Ref In input is required, but invalid or not present.
Off Remote interface is disabled.
Green Remote interface is enabled and operating without errors.
Red Remote interface is enabled but there is a low-level serial communications error.
Off The timecode input is not required.
Timecode
Green Input is required and a valid input is detected.
Red
Input is required, but invalid (e.g., stop time frame number >25 and timecode
is at 25 fps) or not present.
2.6.3 Channel Activity LEDs
There are six-channel activity LEDs.
If an input channel is muted because its input source is missing or invalid, the
respective activity LED will be turned off.
If the system is missing its clock signal then all activity indicators will be turned off
even if audio inputs are present.
Table 2-7 Input Channel Activity LED States
State Description
Off Channel is not used. Channel is muted due to invalid input.
Yellow Channel is selected and less than –60 dBFS.
Green Channel is selected and between –0.1 and –60 dBFS.
Red Channel is selected and is greater than –0.1 dBFS (clip).
2.6.4 Remote Connector
The front-panel RS-232 port is active only when a connector is physically attached to
the port and the Remote mode or Download mode is enabled.
The following front-panel functions are active during the Remote mode:
• All front-panel status LEDs. This includes the LEDs on the front-panel preset
buttons, although the buttons themselves are not active.
• The Remote mode remains active whether or not controlling devices are
attached to the remote ports and whether or not commands are being received.
Note that commands from the front-panel remote port override any commands
received from the rear-panel port.
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Model DP569 User’s Manual
Applications
The two main applications for the DP569 Dolby Digital encoder are:
• Digital Television Broadcasting
• DVD Authoring
Each environment has unique requirements in terms of installation and operation. In
this chapter, we discuss each application in detail. This chapter assumes the user has
some knowledge of the ideas and principles behind metadata. If this is not the case,
we suggest you read Appendix A before continuing.
3.1 Digital Television Broadcasting
Chapter 3
3.1.1 Basic Integration with an MPEG Encoder or Multiplexer
The DP569 is designed to integrate with existing MPEG encoders and transport
stream multiplexers. Various methods can be used to control the encoder settings,
particularly the metadata parameters used during the encoding process, each
providing a different level of complexity and service.
The DP569 is connected as shown in Figure 3-1. This diagram shows a 5.1-channel
installation; stereo and mono installations will be identical except for the number of
digital audio inputs.
In the simplest mode of operation, all system settings (including metadata parameters)
are set once in the encoder for all transmissions. In this mode the metadata settings
will need to be configured to match the characteristics of the audio currently used
within the TV station (for example, the levels, dynamic range, peak levels, and so
forth). Consequently, all audio must conform to these characteristics before it reaches
the DP569 in order to match these metadata settings. This is similar to the requirements
of analog or MPEG digital transmissions, where the audio system has fixed
characteristics and the program audio is conformed to match.
The next level of complexity uses the GPI status port to select up to four different user
presets, allowing automation systems to choose different metadata settings for different
types of programming. For example, one setting for network transmissions and another
for local insertions, or settings for news, sports, feature films, and commercials.
Again, the audio will need to be conformed to match the chosen setting; however,
there is now a greater amount of flexibility available for audio transmissions.
3-1
Model DP569 User’s Manual Applications
MUXDP569
L/R
C/LFE
Ls/Rs
48 kHz
Reference
Digital
In
Ref In
Status
Optional Preset Recall
via automation
GPI
Main
Out
Alarms and Status
Multiplexer
Dolby
Digital Input
GPI
Input
Ref Out
MPEG Transport
stream output
Figure 3-1 DP569 Integrated with a Multiplexer
3.1.2 Integration within a Dolby E System
More and more broadcast systems are using Dolby E to distribute multiple channels
of audio within and between TV stations. Dolby E will provide both the audio and
metadata for the DP569 encoder, in effect “remote controlling” the DP569 settings.
Consequently, the configuration of the DP569 itself is simplified yet the whole audio
transmission is highly flexible.
An example of a 5.1-channel installation is shown in Figure 3-2. Stereo or mono
installations will follow a similar pattern. The DP572 decodes the Dolby E signal,
extracts the audio and metadata, and sends it to the 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 75Ω terminators if the loop-through
BNC connectors on the DP569 are unused.
Use a standard DB9 male-to-male cable (not a null modem) to connect the Metadata
output on the DP572 decoder to the Metadata input on the DP569. It is possible to
connect one DP572 to many DP569 units by simply cascading the metadata
connection.
When a DP569 receives external metadata, the following parameters must be
explicitly set:
• Set the Metadata Source to the appropriate program—this is usually
Program 1. See Section 4.2.2.
• Set the Reversion Mode. See Section 4.2.2.
This can also be done quickly by recalling factory preset 1 from the front panel (a
copy is stored in preset 28).
3-2
Model DP569 User’s Manual Applications
DP572
Dolby E
Video Ref (Studio
Ref or Source VTR)
Main
Input
L/R
Digital
Audio
Outputs
GPI Status
Metadata
Out
Aux
Input
Figure 3-2 Connection Between a DP569 and DP572
3.1.3 Metadata Reversion
It is important to consider what will happen in situations where metadata does not
exist. There are two common situations where metadata may not be available.
1. When using audio material that has been supplied without metadata—for
example, archived material or regular stereo broadcast programming such as
news or local programming material.
Digital
In
GPI
Status
Main
Out
Alarms and
Status
MUXDP569
Multiplexer
Dolby
Digital Input
GPI
Input
MPEG Transport
stream output
2. Equipment failure within the broadcast audio chain.
When a DP569 (or Dolby E products) does not receive metadata, it will revert to a set
of preconfigured metadata parameters. This reversion behavior can be used as part of
a systems design to apply the correct metadata values in case 1 above as well as
providing suitable values in case 2. See Section 4.2.2.
We suggest you contact your systems designer or Dolby Laboratories to discuss the
correct settings for your installation and operating practices.
3.1.4 Coding Delay and Audio/Video Synchronization
It is important to establish the correct system timing relationship between the video
encoder or MPEG transport stream multiplexer and the DP569 in order to maintain
sync. In most cases the MPEG encoder/multiplexer will be able to compensate
internally for the DP569 encoding delay and will have a setting to enable this.
If possible, it is recommended that both the MPEG encoder/multiplexer and the
DP569 be set to compensate for 200 ms of delay (plus an additional one frame in the
multiplexer if also compensating for the decoding delay of Dolby E). As 200 ms is
larger than the minimum delay value required by the DP569 (at 48 kHz) small timing
adjustments can be made in the DP569 if necessary.
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Model DP569 User’s Manual Applications
3.1.5 Alarms and Monitoring
The DP569 has a bypass input that can be used for redundant or hot standby
operation. In order to connect a pair of DP569 for hot standby, the following
connections should be made.
DP569 Primary Encoder
Main Program
Audio
Digital
In
Dolby Digital
Encode Processing
Main
Out
Main Program
Output
Main
Out
Not Used
Optional Terminator
Not Connected
Bypass In
DP569 Standby Encoder
Digital
In
Dolby Digital
Encode Processing
Bypass In
Normal
Bypass
Switched
Out
Switched
Out
Figure 3-3 Hot-Standby Operation of the DP569
The unit automatically enters Bypass mode when an internal fault occurs or when
power to one unit is lost. Bypass mode can also be selected from the I/O Control
menu or via the GPI/O input port.
For further security, pins 1 and 9 (ground) of the GPI/O ports can be used to control a
unit fault alert. If pin 1 goes “low,” then a power supply or hardware fault has
occurred. These can be used on both the encoders so that a faulty standby encoder can
be identified before it is required. Pins 3, 4, and 9 can also be used to ascertain
whether the unit is producing an encoded output, and to trigger a warning.
3.1.6 Quick Start for Digital Television Broadcasting
This section describes the steps necessary to configure the DP569 for typical operation.
1. After unpacking the unit, connect the Digital Audio Inputs to the DP569 using
termination as required. See Section 2.2.2, Digital Audio Inputs.
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Model DP569 User’s Manual Applications
2. If you wish to clock the DP569 using an external AES reference, connect this
reference and change the Clock Source menu to Ref-In SRC On. See Section
4.2.5.
3. If required, connect the appropriate GPIs to an alarm system and/or a second
encoder for redundant operation. See Section 3.1.5
4. Connect the main output (or switched output) to the Dolby Digital input of the
transmission multiplexer.
5. Configure the transmission multiplexer to accept a pre-encoded Dolby Digital
bitstream, as per the unit’s instructions.
6. Set the correct Coding Delay. See Section 3.1.4.
7. Define the Input Channels configuration. See Section 4.2.5.
In a Dolby E facility
8. Recall preset number 1 (copied in preset 28), the DP569 will now be
configured to follow the metadata supplied by the DP572 Dolby E decoder.
In an installation without Dolby E
8. Connect the GPI preset recall pins to the automation as required.
9. You will now need to create individual user preset(s), stored in numbers 1–4,
to hold sets of metadata parameters suitable for your station. Presets 2–5
(copied from 29–32) provide starting points for the most common types of
program. We recommend that you use the DolbyRemote software to configure
and back up these presets.
3.2 DVD Authoring
3.2.1 Overview
The DP569 can be used as part of an integrated system for encoding audio for DVD
applications. The system consists of the following hardware and software:
• PC computer running Windows with a suitable digital I/O soundcard installed
(A list of soundcards is available at www.dolby.com.)
• DP569 Dolby Digital Encoder
• DP562 Multichannel Dolby Digital/Pro Logic Decoder
• DolbyRemote software (supplied with a DP569)
• Dolby Digital Recorder software (Cat. No. 542)
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