Dolby Laboratories CP65 Installationshandbuch

Model CP65Cinema ProcessorInstallation and AlignmentInstructionsIssue 4 Part No. 91234

2-2Locate the power amplifiers away from the Cat. No. 240A optical preamplifierto avoid hum pickup problems.STEP 4 Disconnect power from the existing

2-5STEP 9 Next, check the jumpers in the following locations:Cat. No. 441 Surround Equalization, Subwoofer and SR• D Interface Card (if fitted).J3J2Hi

2-6Cat. No. 242, B-Chain CardJumperHolder(for storage)J1Cat. No. 242Mono lowfrequency filter OFF100mVin1V inMagnetic InputSensitivity SettingJ5J6J7J

2-7Cat. No. 443, Control Logic CardConnect center pad to desiredwake-up state pad(factory setting shown).Cannot select remote fadersCan select remote

2-8CP65 BackplaneJ16, J17 J24 Magnetic format headers: In the standard configuration the CP65 isfitted with two channels of A-type noise reduction

2-9CP65-300In a CP65-300 (when Cat. No.300 modules are fitted in place of the normal Cat. No.350modules) J16 and J18 should be rotated so that the wo

2-10Cat. No. 241 Surround Equalization and Optical Bass Extension. Module (iffitted).HighsubwooferoutputCat. No. 241J1LowsubwooferoutputJ1 Optical Bas

2-11STEP 10 If they are not already installed in the CP65 card cage, install all of the cardsfor your system as shown.Card Descriptions:DolbyDolbyDolb

2-12SlotNo. Card Function5 Cat. No. 222 Contains two channels of Dolby A-type noiseTwo-channel Noise reduction circuitry with LED indicators to setRed

2-13SlotNo. Card Function13 Cat. No. 249 Contains a semi-regulated power supply withPower Supply Module nominal outputs of +15V, -15V, and 24V. Also

Model CP65 Cinema Processor Installation and Alignment InstructionsDolby Laboratories IncU.S. HeadquartersDolby Laboratories Inc100 Potrero AvenueSan

2-14ADDITIONAL INFORMATION FOR THE SAFE OPERATION OF THE CP65To ensure proper operation and guard against potential shock hazard, the CP65 must beconn

2-15GBDFISNLIMPORTANT SAFETY NOTICEThis unit complies with the safety standard IEC65. To ensure safe operation and to guardagainst potential shock ha

2-16STEP 11 Turn the front pannel FADER fully down, then connect the CP65 to mainspower.Model CP65STEP 12 With the NORMAL/BYPASS switch (accessible wi

2-174. Power amplifiers. Disconnect from the CP65 and ground the inputs todetermine if the power amplifiers are causing hum problems.With CP65 FADER

3-1SECTION 3AN OVERVIEW OF THE ALIGNMENT PROCEDUREThis section is an overview of the general principles involved in the alignment of Dolbycinema equip

3-2and with a broad range of speakers. Accurate equalization requires the use of standardizedacoustic measurement procedures.A pink noise generator

3-3Many loudspeakers used in theatres are far from ideal and require boosting of the low- andhigh-frequency extremes in order to produce an approximat

4-1SECTION 4A-CHAIN ALIGNMENTThe A-chain is the part of the sound system that covers the film path, solar cell, opticalpreamplifier, slit loss equaliz

A-Chain Alignment ProceduresStepNo.4-2IndicationActiona. Preliminary Procedures123A-Chain Alignment ProceduresNotes4-3a. Preliminary ProceduresInspe

A-Chain Alignment ProceduresStepNo.4-4IndicationAction70 TO 80%OF RATED VOLTAGEa. Preliminary Procedures✓45A-Chain Alignment ProceduresNotes4-5a.

Model CP65 Cinema Processor Installation and Alignment InstructionsiiiTable of ContentsINTRODUCTION...

A-Chain Alignment ProceduresStepNo.4-6IndicationActionb. Optical Preamplifier Adjustments123DolbyRtLtLtRtgndProj. 2hfGAINhfGAINRt tpRtLtLt tpProj.

A-Chain Alignment ProceduresStepNo.4-8IndicationActionb. Optical Preamplifier AdjustmentsMono01formatMono01format456DolbyRtLtLtRtgndProj. 2hfGAINhfGA

A-Chain Alignment ProceduresStepNo.4-10IndicationActionb. Optical Preamplifier AdjustmentsLLLLRRRR✓✓OSCILLOSCOPE TRACESRtLtCAT NO.22278DolbyRtLtLtRtg

A-Chain Alignment ProceduresStepNo.4-12IndicationnActionb. Optical Preamplifier AdjustmentsRtLtCAT NO.22291011 REPEAT ANDLR98OSCILLOSCOPE TRA

A-Chain Alignment ProceduresStepNo.4-14IndicationAction✓xxOut of phaseIncorrect azimuth...00005555...1111...2222...4444...88881111...66663333...

A-Chain Alignment ProceduresStepNo.4-16IndicationActionb. Optical Preamplifier Adjustments...00005555...1111...2222...4444...88881111...6666333

A-Chain Alignment ProceduresStepNo.4-18IndicationAction1617FOR PROJECTOR NO. 2REPEAT1→16RtLtCAT NO.222DolbyRtLtLtRtgndProj. 2hfGAINhfGAINRt tpRtLtLt

c. Magnetic Preamplifier AdjustmentsMagnetic AlignmentThe CP65 in its normal configuration does not provide noise reduction for signalsen

Magnetic Alignmentc. Magnetic Preamplifier Adjustments7. Remove the Cat. No. 242 card and locate the reversible plug-in Magnetic InputSensitivity

SECTION 5B-CHAIN ALIGNMENT5-1

ivModel CP65 Cinema Processor Installation and Alignment InstructionsSECTION 6REFERENCE BLOCK DIAGRAMS ...

B-Chain Alignment ProceduresActionIndicationStepNo.5-2a. Setting Room EqualizationNORMAL BYPASSbypass(switch behind panel)1CINEMA EQUALIZER MODULE CA

B-Chain Alignment ProceduresActionIndicationStepNo.5-4a. Setting Room Equalization45Cat. No.85Cat. No.150B-Chain Alignment ProceduresNotes5-5Remove t

B-Chain Alignment ProceduresActionIndicationStepNo.5-6a. Setting Room Equalization5CONT'DNORMAL BYPASSbypass(switch behind panel)67ONPOWER AMPB-

B-Chain Alignment ProceduresAction IndicationStepNo.5-8012345678910selectlocal/remotemutelocal activea. Setting Room Equalization012345678910NORMAL B

B-Chain Alignment ProceduresActionIndicationStepNo.5-10a. Setting Room Equalization1213→1211REPEATDolbygainmononon-syncgainpointstestmono eqLsRCLLsRC

B-Chain Alignment ProceduresActionIndicationStepNo.5-12a. Setting Room Equalizationbypass(switch behind panel)NORMAL BYPASSNORMAL BYPASS04Dolby Stere

B-Chain Alignment ProceduresActionIndicationStepNo.5-14a. Setting Room Equalization.05.1.2.4.81.63.156.3 12.5 kHzdB–10+50–5+102.0 8.0.05.1.2.4.81.63.

B-Chain Alignment ProceduresActionIndicationStepNo.5-16181920a. Setting Room EqualizationPaulB-Chain Alignment ProceduresNotes5-17a. Setting Room Eq

B-Chain Alignment ProceduresActionIndicationStepNo.5-18a. Setting Room Equalizationb. Adjusting L,C,R Gain012345678910212223012345678910b. Adjustin

B-Chain Alignment ProceduresActionIndicationStepNo.5-20Dolbygainmononon-syncgainpointstestmono eqLsRCLLsRCLgndLsRCLRLsignalpresentCat. No.242c. Setti

INTRODUCTIONThis manual contains essential information on the installation and alignment of the CP65Cinema Sound Processor. The CP65 supersedes the C

B-Chain Alignment ProceduresActionIndicationStepNo.5-22012345678910selectlocal/remotemutelocal activeautosubwooferoffCAT. NO. 441123d. Subwoofer Align

B-Chain Alignment ProceduresActionIndicationStepNo.5-244567d. Subwoofer Alignment (Cat. No. 441)Dolbyn-syncsurrgainQonpresentsignalgndgainbassQmidfreq

B-Chain Alignment ProceduresActionIndicationStepNo.5-268910d. Subwoofer Alignment (Cat. No. 441)Dolbyn-syncsurrgainQonpresentsignalgndgainbassQmidfreq

B-Chain Alignment ProceduresActionIndicationStepNo.5-28.05.1.2.4.81.63.156.3 12.5 kHzdB–10+50–5+10CENTERCHANNELNOTE THIS LEVEL11112autosubwooferoffCAT

B-Chain Alignment ProceduresActionIndicationStepNo.5-30.05.1.2.4.81.63.156.3 12.5 kHzdB–10+50–5+10.05.1.2.4.81.63.156.3 12.5 kHzdB–10+50–5+1014d. Subw

B-Chain Alignment ProceduresActionIndicationStepNo.5-32e. Surround Equalization Alignment (Cat. No. 441)12OFFRIGHT385 dBCSTEREO SURROUND88 dBCMONO SU

ActionIndicationStepNo.5-34B-Chain Alignment Procedurese. Surround Equalization Alignment (Cat. No. 441)354Dolbyn-syncsurrgainQonpresentsignalgndgain

ActionIndicationStepNo.5-36B-Chain Alignment Procedurese. Surround Equalization Alignment (Cat. No. 441)69REPEAT6→887Dolbyn-syncsurrgainQonpresentsig

ActionIndicationStepNo.5-38B-Chain Alignment Procedures85 dBCSTEREO SURROUND88 dBCMONO SURROUNDe. Surround Equalization Alignment (Cat. No. 441)10113

ActionIndicationStepNo.5-40B-Chain Alignment Procedures=17e. Surround Equalization Alignment (Cat. No. 441)16bypass(switch behind panel)NORMAL BYPASS

This installation and alignment manual covers the procedures necessary to ensure that thetheatre sound system is accurately aligned to standards that

f. Adjustment of Surround Delay5-42B-Chain Alignment ProceduresThe CP65 incorporates a delay line in the surround channel to ensure that sound from t

ActionIndicationStepNo.5-44B-Chain Alignment Proceduresg. Adjustment of Bypass GainNORMAL BYPASS1234012345678910selectlocal/remotemutelocal activexx

ActionIndicationStepNo.5-46B-Chain Alignment ProceduresNORMAL BYPASSbypass(switch behind panel)g. Adjustment of Bypass Gain675Dolby15V15V24Vgainbypas

ActionIndicationStepNo.5-48B-Chain Alignment Procedures60non-sync14243NORMAL BYPASS012345678910selectlocal/remotemutelocal activeh. Adjustment of Non

ActionIndicationStepNo.5-50B-Chain Alignment Proceduresh. Adjustment of Non-sync Gain56Dolbygainmononon-syncgainpointstestmono eqLsRCLLsRCLgndLsRCLRL

ActionIndicationStepNo.5-52B-Chain Alignment Proceduresi. Adjustment of Mono Gain and Equalization1NORMAL BYPASS201Mono34Dolbygainmononon-syncgainpo

ActionIndicationStepNo.5-54B-Chain Alignment Proceduresj. Final ChecksNORMAL BYPASS14NORMAL BYPASS304Dolby StereoA-type2JIFFYTEST FILMCN 251–A subjec

6-1SECTION 6REFERENCE DIAGRAMS

Cat. No. 222 Dual Noise Reduction Module

CAT. NO. 240A OPTICAL PRE-AMPLIFIER CARDSlit LossEQIndicatorpowerP1 LEDP2 LED25 Hz-18 kHz25 Hz-18 kHzSlit LossEQSlit LossEQSlit LossEQ67Proj1 Left-+21

1-1SECTION 1EQUIPMENT REQUIREDa. Dual-trace oscilloscope with X-Y facilities.b. 1/3 Octave Real Time Spectrum Analyzer (RTA) with calibrated micropho

Cat. No. 241 Optical Bass Extension and Surround Equalizer Card

Cat. No. 242 B-Chain Facilities Card

Cat. No. 249 Power Supply Card

Cat. No. 259 Transformer Module

CAT. NO. 441 SURROUND EQUALIZER, SUBWOOFER AND DIGITAL INPUT CARDCTSR101112B3+++++A180 Hz180 Hz100 Hz50 Hz20 kHzMLDHEQEQDownward ExpanderEQFaderFader8

Cat. No. 443 Control Logic Card

6-12Note: The Cat. No. 384 operates from + and – 8V. These voltages are created from the + and – 15V railsby regulators IC3 and IC4, mounted at the

A.1APPENDIX ACHECKING PHASING OF SPEAKERSLoudspeakers are two-wire devices that can be connected incorrectly as well as correctly.Incorrectly wired lo

B.1APPENDIX BEFFECT OF CHANGES IN SLIT HEIGHT ON SLIT LOSSESThe slit has a finite height that cannot be reduced without a simultaneous reduction in th

C-1APPENDIX CCP65M (MONO) INSTRUCTIONS1. OperationThe CP65 can be configured for mono-only operation. Systems so equipped are shipped withonly the ce

1-2(3) SMPTE Buzz Track(4) Stereo Optical Surround Level — Cat. No. 151g. The following films can also be purchased from Dolby Laboratories or

C.2Schematic Cat. No. 327AA3C2984 rev 2

D.1APPENDIX DBACKPLANE CONNECTIONS LISTCP65 Backplane ConnectionsTerminal Block TB1 Terminal Block TB21 Left non-sync i/p 1 [automation select] projec

D.2D connector J181 S0 [automation select] fmt 01 Mono2 S1 [automation select] fmt 04 Dolby A-type3 S2 [automation select] fmt 05 Dolby SR [optical]4

2-1SECTION 2INITIAL SET-UP AND INSTALLATIONBefore you remove or replace the Cat. No. 240A Optical Pre-Amp or the Cat.No. 249 Power Supply Card, first