Dolby Laboratories CP500-D User manual

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Model CP500
Digital Cinema Sound
Processor
Installation and Alignment
Issue 5 Part No. 91371

Installation and Alignment Manual
For
Model CP500
Digital Cinema Sound Processor
Dolby Laboratories Incorporated
U.S.A. 100 Potrero Avenue, San Francisco, CA 94103
Tel: [phone]; Fax: [phone], www.dolby.com
U.K. Wootton Bassett, Wiltshire SN4 8QJ
Tel: [phone]; Fax: [phone]
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. There are no other express or implied warranties and no warranty of
merchantability or fitness for a particular purpose.
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 and the double-D symbol are registered trademarks of Dolby Laboratories.
Windows 95 is a trademark of Microsoft Corporation
Digital decoding covered by the following U.S. patents: 4,790,016, 4,914,701, 4,799,260 4,941,177, 5,109,417, 5,142,656, 5,230,038,
5,274,740, 5,297,236, 5,357,594, 5,463,424, 5,583,962, 5,608,805, and other worldwide patents granted and pending.
©1998 Dolby Laboratories Inc. ISSUE 5
Software v 1.30
S98/11507/12003
Dolby Part No. 91371

TABLE OF CONTENTS
SECTION 1 INTRODUCTION
1.1 About the Dolby CP500 ......................................................................1-1
1.2 Hardware Configurations Available....................................................1-1
CP500-D........................................................................................1-1
CP500-300.....................................................................................1-1
CP500-SR......................................................................................1-2
CP500-70.......................................................................................1-2
1.3 About This Manual..............................................................................1-2
1.4 Specifications ......................................................................................1-3
1.5 Regulatory Notices ..............................................................................1-5
FCC ...............................................................................................1-5
UL..................................................................................................1-5
UK .................................................................................................1-5
IEC.................................................................................................1-5
SECTION 2 EQUIPMENT REQUIRED
SECTION 3 INSTALLATION AND JUMPERS
3.1 Replacing an Existing Sound System..................................................3-1
3.1.1 Before playing the film:........................................................3-1
3.1.2 While playing the film:.........................................................3-1
3.1.3 Disconnect the old system....................................................3-1
3.2 Mount the CP500.................................................................................3-2
3.3 Connect the CP500..............................................................................3-2
3.3.1 Connect Motor Start Relays ................................................3-3
3.3.2 Connect Remote Controls ...................................................3-3
3.3.3 Connection of Solar Cell Boards.........................................3-4
3.4 Check and Set Jumpers........................................................................3-6
Cat. No. 661 Optical Pre-amplifier Card (Analog
Soundtracks)......................................................................3-6
Cat. No. 681 Analog Switch Card.....................................3-6
Cat. No. 682 Analog Output Card.....................................3-7
Cat. No. 683 Crossover Card (Optional)...........................3-8
3.5 Install Circuit Cards - Card Descriptions ..........................................3-10
Model CP500-D ..........................................................................3-10
Cat. No. 222SR/A Module..............................................3-10
Cat. No. 661 Optical Preamplifier Card..........................3-10
Cat. No. 681 Input Switch Card ......................................3-10
Cat. No. 675A Digital Signal Processing Cards (2)........3-10
Cat. No. 685 6-Channel Analog to Digital Converter
Card .................................................................................3-10
Cat. No. 662 6-Channel Digital to Analog Converter
and Voltage Controlled Amplifier Card..........................3-10
Cat. No. 682 Analog Output Card...................................3-10
Cat. No. 684 System Controller Card..............................3-10
Cat. No. 683 Crossover Card (Optional).........................3-11

ii
Dolby Digital Soundtrack Processing System............................. 3-11
Cat. No. 670 Video Front-end Card............................................ 3-11
Cat. No. 671 DSP Cards (2)........................................................3-11
Cat. No. 673 System Services Card ............................................ 3-11
Cat. No. 675A Digital Signal Processing Card ...........................3-11
Cat. No. 680 Bit Rate Converter Card ........................................3-11
Model CP500-D/300...............................................................................3-11
Model CP500-SR .................................................................................... 3-11
Model CP500-70.....................................................................................3-11
Cat. No. 222A Modules (2).........................................................3-11
Cat. No. 669 Adapter Card..........................................................3-11
Cat. No. 685 6-Channel Analog to Digital Converter
Card.............................................................................................3-11
3.6 Bypass Power Wiring.................................................................................... 3-12
3.7 Power On....................................................................................................... 3-13
3.7.1 Hum and Other Noise Problems.....................................................3-14
Fold-Out Drawings:
Card Locations
CP500 Wiring
SECTION 4 FRONT PANEL and ALIGNMENT OVERVIEW
4.1 The CP500 Front Panel.................................................................................4-1
4.1.1 Soft Keys: SK1 to SK8.................................................................. 4-1
4.1.2 Hard Keys....................................................................................... 4-1
Formats........................................................................................4-1
Menu............................................................................................4-1
Cancel.......................................................................................... 4-3
OK...............................................................................................4-3
Exit..............................................................................................4-3
4.1.3 Other Controls and Indicators:.......................................................4-3
4.2 System Password...........................................................................................4-4
4.3 Aligning the B-Chain ....................................................................................4-5
SECTION 5 B-CHAIN ALIGNMENT
5.1 Check Theater Equipment.............................................................................5-1
Amplifiers....................................................................................5-1
Air-conditioning.......................................................................... 5-2
5.2 Preparing for Room Equalization.................................................................. 5-2
Using a Microphone Multiplexer with the CP500...................... 5-2
5.2.1 Configure the Cat. No. 682 for Use with the Optional
Cat. No. 683 Electronic Crossover Card.................................................5-2
5.2.2 Screen Channels............................................................................. 5-2
5.2.3 Surround Channel Bass Drivers (Optional)....................................5-3
5.3 Room Equalization........................................................................................5-4
5.4 Bypass Crossover Adjustment......................................................................5-15

iii
SECTION 6 A-CHAIN ALIGNMENT
6.1 Aligning the A-Chain....................................................................................6-1
6.2 Analog Optical Alignment - Projector...........................................................6-2
SECTION 7 Cat. No. 700 DIGITAL SOUNDHEAD
7.1 Mechanical Alignment ....................................................................................7-1
7.2 Adjustment Setup with Oscilloscope ..............................................................7-1
7.3 Focus Adjustment............................................................................................7-2
7.4 Exciter Lamp Level Confirmation and Adjustment ........................................7-3
7.5 Film Path Alignment.......................................................................................7-3
7.6 Optical Alignment...........................................................................................7-4
7.7 How to Identify Types of Soundtracks............................................................7-6
7.8 Film Threading................................................................................................7-6
7.9 Cat. No. 673.....................................................................................................7-7
7.10 Projector Changeover / Motor Run Indicators ..............................................7-7
7.11 Format Control ..............................................................................................7-7
7.12 Automatic Selection of the Dolby Digital Format.........................................7-7
7.12.1 A Quick Look at Operation With Standard Set-up........................7-7
7.12.2 Operation with Custom Setup ........................................................7-9
Allowable Source Formats..........................................................7-10
Allowable Target Formats...........................................................7-10
How It Works ..............................................................................7-10
Disabling the Auto-Digital Feature .............................................7-10
7.12.3 Setting Up the Auto-Digital System.............................................7-11
Assigning Source Formats...........................................................7-11
Assigning Target Formats ...........................................................7-12
7.13 Maintenance and Adjustments ....................................................................7-13
7.13.1 Replacing the Exciter Lamp.........................................................7-13
7.13.2 Print Cleanliness...........................................................................7-13
7.13.3 Adjustments..................................................................................7-13
SECTION 8 FINAL ADJUSTMENTS
8.1 Setting Optical Surround Delay.......................................................................8-1
8.2 Setting Digital Soundhead Delay ....................................................................8-3
8.2.1 Static.................................................................................................8-3
8.2.2 Dynamic............................................................................................8-4
8.2.3 Typical Settings................................................................................8-4
8.3 Setting Digital Surround Delay.......................................................................8-5

iv
8.4 Bypass Adjustments ........................................................................................8-6
8.4.1 Before you Adjust ............................................................................8-6
8.4.2 Bypass Level Adjustment (No Cat. No. 683 Electronic
Crossover Card Installed)..........................................................................8-7
8.4.3 Output HF/LF Balance and Level Adjustments(With
Cat. No. 683 Electronic Crossover Card)..................................................8-8
8.4.4 Bypass Level Adjustment for Early Cat. No. 682 (No
Cat. No. 683 Electronic Crossover Card Installed)........................8-10
8.4.5 Early Cat. No. 682 Output HF/LF Balance and Level
Adjustments (With Cat. No. 683 Electronic Crossover
Card)...............................................................................................8-11
8.5 About Non-sync ............................................................................................8-12
8.6 Mute Speed Adjustment................................................................................ 8-13
SECTION 9 ACCESSORIES
9.1 CP500 Operation with Remote Controls.........................................................9-1
9.1.1 Cat. No. 689 CP500 Remote Control...............................................9-1
9.1.2 Cat. No. 734 CP500 Remote Fader..................................................9-2
9.1.3 Auditorium Fader.............................................................................9-3
9.2 Operation with Cat. No. 580 Microphone Multiplexer...................................9-4
9.2.1 Operation..........................................................................................9-4
9.2.2 Components......................................................................................9-6
SECTION 10 TROUBLESHOOTING
10.1 During the Show..........................................................................................10-1
10.1.1 If Film Sound Is Lost.................................................................... 10-1
10.1.2 If One Channel Fails or is Distorted.............................................10-2
10.1.3 If Switching to Bypass Does Not Restore Sound.........................10-2
10.1.4 If You Hear Extraneous Noises When Playing a
Digital Film.............................................................................................10-2
10.1.5 Excessive or Inappropriate Sound From Surround
Speakers ..................................................................................................10-3
10.1.6 On CP500s Equipped with Cat. No. 683 Electronic
Crossover:................................................................................................10-3
10.2 Between Shows........................................................................................... 10-4
10.2.1 Analog Film Sound Signal Path LEDs......................................... 10-4
10.2.2 Digital Film Sound Signal Path LEDs ......................................... 10-5
10.2.3 Bypass Signal Path LEDs.............................................................10-7
10.3 Troubleshooting Chart.................................................................................10-7
APPENDIX A ADVANCED OPERATIONS
A.1 Customizing the Format Display Screen........................................................A-1

v
A.2 Saving System Settings...................................................................................A-5
A.2.1 Using the Terminal Program in Windows®.....................................A-5
Equipment Needed ........................................................................A-5
Transferring Data From the CP500 to the Computer....................A-5
Transferring Data From the Computer to the CP500..................A-9
A.2.2 Using Load500 Software...............................................................A-11
Equipment Needed ......................................................................A-11
Transferring Data From the CP500 to the Computer..................A-11
Transferring Data from the Computer the to the
CP500..........................................................................................A-13
A.3 Transferring Data Between Two CP500s.....................................................A-15
APPENDIX B CAT. NO. 683 ELECTRONIC CROSSOVER
B.1 Description and Features.................................................................................B-1
B.2 Installation ......................................................................................................B-1
B.3 Alignment .......................................................................................................B-2
B.3.1 Screen Channels...............................................................................B-2
B.3.2 Surround Channel Bass Drivers.......................................................B-3
B.3.3 Bypass Crossover Subsystem...........................................................B-3
B.4 Special Applications.......................................................................................B-4
B.4.1 Time Delay.......................................................................................B-4
B.4.2 Crossover Frequency........................................................................B-5
B.5 Headers Available...........................................................................................B-5
B.6 Jumpers and Headers ......................................................................................B-6
APPENDIX C BACKPLANE CONNECTOR ASSIGNMENTS
1. Automation Connector:............................................................C-1
2. Serial Data Connector: .............................................................C-1
3. Motor Start Connector:.............................................................C-1
4. Bypass / Remote Connector: ....................................................C-2
5. Main / LF Output Connector:...................................................C-2
6. Crossover Output Connector:...................................................C-2
7. Optical 1 Input Connector:.......................................................C-3
8. Optical 2 Input Connector:.......................................................C-3
9. Mic. Input Connector: ..............................................................C-3
10. Accessory Rack Analog Connector:.......................................C-4
11. Accessory Rack Digital Connector:........................................C-5
12. 6 Channel Input Connector:....................................................C-6
13. Reader 1 and Reader 2 Input Connector:................................C-7
FOLD-OUT DRAWINGS:
System Setup Menu Tree
Alignment and Diagnostics Menu Tree
Signal Block Diagram
Backplane Interconnections

vi
APPENDIX D THE DOLBY DIGITAL SUBSYSTEM
D.1 Basic Functions ..............................................................................................D-1
D.2 Discussion of Changeover Technique............................................................D-3
D.3 Auxiliary Data Channel..................................................................................D-3
APPENDIX E THE EVOLUTION OF DOLBY FILM SOUND
Optical Sound..........................................................................................E-1
Magnetic Sound.......................................................................................E-2
Dolby Gets Involved................................................................................E-3
The Next Step: Dolby SR........................................................................E-4
And Now - Dolby Digital........................................................................E-4
About Dolby AC-3.................................................................................. E-5
Making Films Sound Better ....................................................................E-5

SECTION 1
INTRODUCTION
1.1 About the Dolby CP500
Dolby Laboratories has continuously established new benchmarks for motion
picture sound. The CP500 Digital Cinema Processor maintains that tradition, setting
new standards for performance, value, flexibility, and convenience. Entirely self-
contained, the CP500 provides both Dolby Digital and Dolby analog processing
built in. An easy-to-read LCD screen and uncomplicated front panel soft keys
makes it easy to install, operate, and maintain. Software that can be readily
programmed, controls any existing or future format. Built-in test instrumentation
that includes a real time analyzer make the CP500 easier to align and calibrate than
conventional processors. No external PC is required for setup. Once aligned,
calibration settings can be password protected to prevent mis-adjustment.
Built-in diagnostic software enables theater staff to verify performance of the
complete theater sound system. Calibration settings for a given theater can be
stored on a PC, and should the need ever arise, they can be transferred directly to
another CP500 or other modules, thereby reducing or eliminating the need for
further calibration after repairs. As improvements to the CP500 digital control and
processing software are developed, the latest revisions can be downloaded from a
PC to the CP500 hardware. Moreover, updates to the audio coding used for Dolby
Digital soundtracks, which are included from time to time on Dolby Digital release
prints, download automatically into the CP500 the first time such a print is played in
the cinema.
Options available for the CP500 include internal Linkwitz-Riley crossover networks
(Cat. No. 683) for bi-amplified screen speakers, and 6 channel A/D converter (Cat.
No. 685) for use with Dolby models DA10 or DA20 processors, 70mm magnetic
systems, or other cinema sound systems.
1.2 Hardware Configurations Available
The CP500 is available in four versions:
CP500-D
•Dolby Digital decoding capability
•Dolby A-type and SR analog soundtrack decoding capability
CP500-D/300
•Primarily used in preview theaters and studios
•Dolby A-type and SR analog soundtrack decoding capability
•Dolby Digital decoding capability

1-2
CP500-SR
•Dolby A-type and SR analog soundtrack decoding capability
•Upgradable to Dolby Digital decoding by means of plug-in circuit cards
CP500-70
•Dolby Digital decoding capability
•Dolby A-type and SR analog soundtrack decoding capability
•70mm magnetic soundtrack capability (includes a 6 channel A/D module
and 4 additional channels of Dolby A-Type noise reduction for use with
an external magnetic pre-amp); can play Formats 42 and 43
Any CP500 configuration also interfaces readily with other film sound equipment.
1.3 About This Manual
This manual is intended to be used by individuals who are qualified in the area of
cinema sound equipment installation and service.The basic day-to-day operation of
the CP500 is covered in the CP500 Users' Manual, Dolby part number 91372.
This installation and alignment manual covers the procedures necessary to ensure
that the theater sound system is accurately aligned to standards that have been
established by Dolby Laboratories. Following these procedures will ensure that the
theater sound system will accurately reproduce the soundtrack as the director and
sound mixers intended.
The Dolby CP500 is the central element of the theater sound system.The projector,
the Dolby Processor, the power amplifiers and the loudspeakers, as well as the
auditorium itself, must all be considered when aligning the system for optimum
performance.
The system alignment procedure is divided into two parts. The B-chain alignment
includes the equalization, loudspeaker crossover, and output level adjustments, in
addition to the regulation of miscellaneous functions, such as fade-out time
adjustment. The A-chain alignment involves adjustments made to the projector
soundhead optics, solar cell, and optical preamplifier card.

1-3
1.4 Specifications
Construction
Rack-mount chassis frame construction with plug-in modules accessible behind hinged front
panel.
Signal Connections
a. Standard 9 pin D-type connectors for Mic., Optical 1, Optical 2, Serial Data, and Motor Start
signals.
b. Standard 25 pin female D-type connectors for Digital Readers 1 and 2, Accessory Unit,
Automation connections, and 6 Channel Analog Inputs.
c. RCA type phono jacks for Non-sync 1 and 2.
d. Phoenix screw terminal connectors for processor outputs, bypass power, and remote control
connections.
Signal Inputs
a. 6 Channel: Six analog inputs for use with external magnetic preamplifier or external
processor, 300 mV operating level. (Requires optional Cat. No. 685.)
b. Optical: Two pairs of balanced inputs for two projectors with stereo solar cells (available from
Dolby Laboratories mounted on brackets for most projector types). Inputs compatible with LED
illuminated reverse-scan analog readers.
c. Non-sync: Two stereo inputs for non-sync sources. 50 kOhm input impedance, 50 mV to 2.5 V
sensitivity. 2:4 decoder may be used to decode Dolby Surround program sources.
d. Microphone: One balanced input for B-chain equalization P.A. mic. or multiplexer and one
unbalanced input for house announcement mic.
e. Dolby Digital Film Reader (CP500-D): Two inputs for connection to penthouse or inboard
readers.
Signal Outputs
47 ohms output impedance will drive any load greater than 600 ohms. Maximum output level, +20
dBu. Typical operating level, -10 dBu.
Operating levels from 25 mV to 0.7 V may be accommodated.
Output For Hearing-impaired System
Center-weighted sum of L, R, C for connection to auxiliary system for the hearing impaired.
Output impedance is 47 ohms with a fixed output level of 200 mV.
Optical Preamplifier
A Cat. No. 661 Optical Preamplifier accepts signals from two projectors with stereo solar cells.
Gain and slit loss adjustments are digitally controlled.
Noise Reduction
Two channels of Dolby A-type noise reduction and two channels of Dolby SR are provided as
standard. Up to six channels of A-type (CP500-70) and two additional channels of studio SR
(CP500-300) can be accommodated.
Four Channel Decoder
Cat. No. 675A DSP Module decodes left, center, right, and surround channels from the two optical
tracks on Dolby analog optical prints. Adjustable delay to optimize front to surround separation.

1-4
Loudspeaker Equalization
L,C,R: 27 band digital 1/3 octave EQ; digitally controlled bass and treble
LsRs: digital 9-band, full octave EQ
SW: Digital parametric EQ with 12dB cut capability
Remote Connections
Connections for up to two Dolby Cat. No. 689 remote fader, format selectors and/or Cat. No. 734
fader-only remotes are provided. A provision is also made for a temporary auditorium fader
consisting of a 100k potentiometer.
Automation
Direct mode allows eight contact closures to ground for selecting formats.
Sequential mode allows a single contact closure to ground for sequencing pre-programmed
formats.
Distortion
Typically 0.05% in Dolby SR mode (Format 05, with output operating level set to -10 dBu and
input 10dB over Dolby level ).
Dynamic Range
Typically 92 dB with fader set to 7.0.
Dimensions
Four units high rack mount chassis. Standard 178 mm high by 493 mm wide faceplate (7 x 9").
Maximum projection behind mounting surface is 360 mm (14.17"). Maximum projection in front
of mounting plate is 32 mm (1.23").
Weight
11.7 kgs (26 lb.) Max.
Power Requirements
100 - 240 VAC, 50-60 Hz Auto Sensing. 2 A max. input current. Single phase. 120 Watts max.
Fuse Requirements
Single 1 1/4" or 5 X 20 mm slow blow fuse according to local safety requirements.
Operating Conditions
0 - 40 oC, 20-80 % humidity, non-condensing.

1-5
1.5 Regulatory Notices
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 likelyto cause harmful
interference in which case the user will be required to correct the interference at his or her own
expense.
UL
The CP500 is UL listed. This installation manual is for use by qualified personnel only. To avoid
electric shock do not open the unit or perform any servicing unless you are qualified to do so.
WARNING: Check that the correct fuse has been installed. To reduce the risk of fire, replace the
fuse only with the same type and rating.
FUSE - 2 Amp, time-lag (T2A), 20 mm long, 250 Volt
Dolby part no. 56027
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, correctly wired and earthed power outlet
must be used. Do not use a ground-lifting adapter and never cut the ground pin on the three-prong
plug.
UK
WARNING: THIS APPARATUS MUST BE EARTHED.
As the colours of the cores in the mains lead may not correspond with the coloured markings
identifying the terminals in your plug, proceed as follows:
•The core that is coloured green and yellow must be connected to the terminal in
the plug that is marked with 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.
IEC
This unit complies with the EMC requirements of EN50081-1 and EN 50082-1 when installed in
an E2 environment in accordance with this manual.

1-6
IMPORTANT SAFETY NOTICE
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:
o If the 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
oEnsurefuses 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.
oThepower 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 IEC65. 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 IEC65. 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 IEC 65. 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 IEC65. 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
VIKTIGA SÄKERHETSÅTGÄRDER!
Denna enhet uppfyller säkerhetsstandard IEC65. 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 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:
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
GB
F
D
I
E
S
NL

SECTION 2
EQUIPMENT REQUIRED
The following equipment is required for proper installation and alignment of the
CP500 Digital Cinema Processor.
•Dual-trace oscilloscope with X-Y facilities (minimum bandwidth 20 MHz, 50
MHz recommended).
•Calibrated microphone (preferably multiple microphones and a multiplexer).
•Sound pressure level meter with slow time-constant and C weighting scale.
•Voltmeter for measuring the exciter lamp power supply.
•Test Films, available from Dolby Laboratories or equipment dealers (Figures 2-1
through 2-7). We recommend that you make loops of these test films, long
enough to go through the entire projector film path so that azimuth and lateral
film position adjustments can be made accurately.
Figure 2 - 1. Dolby Tone – Cat. No. 69T.
Figure 2 - 2. Pink Noise – Cat. No. 69P.
Figure 2 - 3. 1kHz, Crosstalk/Cell Alignment – Cat. No. 97.

2-2
Figure 2 - 4. SMPTE Buzz Track.
Figure 2 - 5. Stereo Optical Surround Level – Cat. No. 151B.
Figure 2 - 6. Illumination Uniformity – Cat. No. 566.
JIFFY
TEST FILM
Cat. No.251 SR•D—A subjective film for testing theatre sound
RECORDED IN
RunningTime:
Picture format: 6 minutes
1.85:1 widescreen or
2.35:1 anamorphic
Sound formats:
10
digital 05
analog
Dolby Laboratories Inc. • 100 Potrero Avenue
San Francisco, CA 94103-4813
Telephone [phone] • Facsimile 415-863-1373
Dolby, the Double-D symbol and Dolby Stereo are trademarks
of Dolby Laboratories Licensing Corporation
S96/10117/11146
Figure 2 - 7. “Jiffy” Test Film – Cat. No. 251 SR/Digital.
Additional test films used during Dolby Digital system installation:
•
••
•Cat. No. 1010 Sync Test
•
••
•Cat. No. 1011 Channel ID
•
••
•Cat. No. 1012 Dolby Level

SECTION 3
INSTALLATION AND JUMPERS
Do NOT connect the CP500 to mains power until all connections have been made
and all jumpers have been checked or set.
If air-conditioning noise is audible in the theater, arrange for lubrication of the
motor, fan bearings, adjustment of belts and drives, and cleaning of filters to reduce
the ambient noise to a minimum. If the air-conditioning cannot be repaired switch it
off while the CP500 is being aligned.
3.1 Replacing an Existing Sound System
If the CP500 replaces an existing cinema sound system, play a typical film before
you remove the old system so you will have a benchmark for comparison to the new
system. It can also serve as a check of the positioning of the exciter lamp, the
focusing of the soundtrack lens, and the condition of the solar cell.
3.1.1 Before playing the film:
•Verify that the existing power amplifiers are in good working order.
•Verify that the existing speakers are in good working order, and that
there is no loose or missing hardware, structural parts, or damaged
drivers in the enclosures.
•Verify that all wiring is present and properly connected and that
crossovers are operating and are correctly adjusted.
•Check the polarity of the speaker connections.
•Verify that there are adequate earth (ground) connections.
•Verify that radio interference problems are adequately resolved.
3.1.2 While playing the film:
While you run the film, listen carefully in various parts of the theater for audio
system problems:
•Hum.
•Noise, clicks, pops.
•Distorted sound.
•Poor tonal balance (lack of high-frequency or bass content).
These problems must be resolved before you can proceed with the new installation.
3.1.3 Disconnect the old system
•Disconnect power from the existing cinema sound equipment.
•Disconnect all cabling from the existing sound processor. Leave the
cables connected to the power amplifiers, booth monitor, etc.

3-2
3.2 Mount the CP500
To avoid heat problems, do not mount the Dolby CP500 immediately above or
below the power amplifiers. Locate the power amplifiers away from the CP500 to
avoid hum pickup problems. Always leave a 1U (43 mm, 1.75") space above and
below the CP500 to provide adequate ventilation. Install an air guide or baffle to
deflect hot air from equipment below the CP500.
To ensure good ground contact, install star washers on all or at least one rack
mounting screw per piece of equipment (Figure 3-1). This will also aid in the
prevention of electrical noise problems.
Figure 3 - 1. Install star washers to rack mounting screws.
Proper shielding and termination of cables and cable assemblies are also very
important. Be sure to follow the methods shown in the wiring diagrams.
If you are installing a Dolby Cat. No. 700 Digital Soundtrack Reader, refer to its
installation manual for mounting and alignment.
3.3 Connect the CP500
Refer to the appropriate fold-out page (at the end of this section) showing
connections to the various CP500 model configurations.
Make output signal connections by inserting stripped and tinned leads into the
supplied cable connectors and tightening each lead in place by means of the integral
set screw. The cable connectors are then plugged into place at the corresponding
locations shown on the fold-out wiring diagram. Shields must be connected as
shown in the fold out page to avoid radio frequency interference.
NOTE:Follow all local codes and regulations covering electrical wiring. It is recommended that conduit be
used for wiring runs.
Green plastic connector shells have been included in your installation kit for use in countries which are
governed by the EMC directives. The shells must be used as noted on the fold-out pages.

3-3
3.3.1 Connect Motor Start Relays (Models CP500-D, and -70)
For two-projector installations, motor start relays are required for projector
changeover. Digital data on the soundtrack is read in advance of the picture,
therefore an advanced changeover signal is required (see Appendix C). Projector
motor start contact closures provide this signal to the CP500. Isolated contact
closures from mechanical or opto-isolated relays wired across projector motors
must be used. Refer to the Installation Wiring Power and Control diagram at the
end of this section.
Signal levels:
Motor Start Less than 1 Vdc with respect to signal ground.
Motor Off: Greater than 3.5Vdc, less than 18Vdc.
Refer to the unit connections fold-out diagram for details (located at the end of this
manual). For single projector installations, a prewire connector is supplied.
3.3.2 Connect Remote Controls
The CP500 is equipped for use with three types of remote controls: the Cat. No.
689, and Cat. No. 734, which are offered by Dolby Laboratories, and an auditorium
fader, which can be made from parts purchased at an any electronics store.
The Cat. No. 689 CP500 Remote Control duplicates the front panel format
selection, fader, and mute controls of the CP500.
The Cat. No. 734 CP500 Remote Fader consists of a shaft encoder with LEDs to
indicate the fader setting.
The auditorium fader is a 100k linear pot wired as a variable resistor, with
minimum resistance corresponding to fader 10.
Details on how to connect any of these remotes to the CP500 are shown in the
Installation Wiring Power and Control drawing located at the end of this section.