Dolby Laboratories CP65 manual

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Buen manual de instrucciones

Las leyes obligan al vendedor a entregarle al comprador, junto con el producto, el manual de instrucciones Dolby Laboratories CP65. La falta del manual o facilitar información incorrecta al consumidor constituyen una base de reclamación por no estar de acuerdo el producto con el contrato. Según la ley, está permitido adjuntar un manual de otra forma que no sea en papel, lo cual últimamente es bastante común y los fabricantes nos facilitan un manual gráfico, su versión electrónica Dolby Laboratories CP65 o vídeos de instrucciones para usuarios. La condición es que tenga una forma legible y entendible.

¿Qué es un manual de instrucciones?

El nombre proviene de la palabra latina “instructio”, es decir, ordenar. Por lo tanto, en un manual Dolby Laboratories CP65 se puede encontrar la descripción de las etapas de actuación. El propósito de un manual es enseñar, facilitar el encendido o el uso de un dispositivo o la realización de acciones concretas. Un manual de instrucciones también es una fuente de información acerca de un objeto o un servicio, es una pista.

Desafortunadamente pocos usuarios destinan su tiempo a leer manuales Dolby Laboratories CP65, sin embargo, un buen manual nos permite, no solo conocer una cantidad de funcionalidades adicionales del dispositivo comprado, sino también evitar la mayoría de fallos.

Entonces, ¿qué debe contener el manual de instrucciones perfecto?

Sobre todo, un manual de instrucciones Dolby Laboratories CP65 debe contener:
- información acerca de las especificaciones técnicas del dispositivo Dolby Laboratories CP65
- nombre de fabricante y año de fabricación del dispositivo Dolby Laboratories CP65
- condiciones de uso, configuración y mantenimiento del dispositivo Dolby Laboratories CP65
- marcas de seguridad y certificados que confirmen su concordancia con determinadas normativas

¿Por qué no leemos los manuales de instrucciones?

Normalmente es por la falta de tiempo y seguridad acerca de las funcionalidades determinadas de los dispositivos comprados. Desafortunadamente la conexión y el encendido de Dolby Laboratories CP65 no es suficiente. El manual de instrucciones siempre contiene una serie de indicaciones acerca de determinadas funcionalidades, normas de seguridad, consejos de mantenimiento (incluso qué productos usar), fallos eventuales de Dolby Laboratories CP65 y maneras de solucionar los problemas que puedan ocurrir durante su uso. Al final, en un manual se pueden encontrar los detalles de servicio técnico Dolby Laboratories en caso de que las soluciones propuestas no hayan funcionado. Actualmente gozan de éxito manuales de instrucciones en forma de animaciones interesantes o vídeo manuales que llegan al usuario mucho mejor que en forma de un folleto. Este tipo de manual ayuda a que el usuario vea el vídeo entero sin saltarse las especificaciones y las descripciones técnicas complicadas de Dolby Laboratories CP65, como se suele hacer teniendo una versión en papel.

¿Por qué vale la pena leer los manuales de instrucciones?

Sobre todo es en ellos donde encontraremos las respuestas acerca de la construcción, las posibilidades del dispositivo Dolby Laboratories CP65, el uso de determinados accesorios y una serie de informaciones que permiten aprovechar completamente sus funciones y comodidades.

Tras una compra exitosa de un equipo o un dispositivo, vale la pena dedicar un momento para familiarizarse con cada parte del manual Dolby Laboratories CP65. Actualmente se preparan y traducen con dedicación, para que no solo sean comprensibles para los usuarios, sino que también cumplan su función básica de información y ayuda.

Índice de manuales de instrucciones

  • Página 1

    Model CP65 Cinema Processor Installation and Alignment Instructions Issue 4 Part No. 91234[...]

  • Página 2

    Model CP65 Cinema Processor Installation and Alignment Instructions Dolby Laboratories Inc U.S. Headquarters Dolb y Laboratories Inc 100 P otrero A venue San Francisco, CA 94103-4813 T elephone 415-558-0200 F acsimile 41-863-1373 www .dolby .com U.K. European Office Dolb y Laboratories Inc W ootton Bassett W iltshire SN4 8QJ England T elephone (44)[...]

  • Página 3

    Model CP65 Cinema Processor Installation and Alignment Instructions iii T able of Contents INTRODUCTIO N ............................................................................................................ . v CP6 5 ........................................................................................................................... . [...]

  • Página 4

    iv Model CP65 Cinema Processor Installation and Alignment Instructions SECTION 6 REFERENCE BLOCK DIAGRAMS .......................................................................... 6- 1 APPENDIX A Checking Phasing of Speakers APPENDIX B Effect of Changes in Slit Height on Slit Losses APPENDIX C CP65M (Mono) Instructions APPENDIX D Backplane Connect[...]

  • Página 5

    INTRODUCTION This manual contains essential information on the installation and alignment of the CP65 Cinema Sound Processor. The CP65 supersedes the CP55 and is available in three versions: CP65 The standard configuration, equipped for the reproduction of the following sound formats • 01 Mono –for all optical prints of any vintage with convent[...]

  • Página 6

    This installation and alignment manual covers the procedures necessary to ensure that the theatre sound system is accurately aligned to standards that have been established by Dolby Laboratories. Following these procedures will ensure that the theatre sound system will accurately reproduce the soundtrack as the director and sound mixers intended. T[...]

  • Página 7

    1-1 SECTION 1 EQUIPMENT REQUIRED a. Dual-trace oscilloscope with X-Y facilities. b. 1/3 Octave Real Time Spectrum Analyzer (RTA) with calibrated microphone. (Preferably multiple microphones and a multiplexer should be used.) c. Sound Pressure Level Meter (with slow time-constant and C weighting scale). d. Cat. No. 85C pink noise generator. e. Cat. [...]

  • Página 8

    1-2 (3) SMPTE Buzz Track (4) Stereo Optical Surround Level — Cat. No. 151 g. The following films can also be purchased from Dolby Laboratories or a cinema equipment dealer. The films are optional items that are used in final system sound verification: (1) “Jiffy” Test Film — Cat. No. 251 (2) “Listen . . .” Film — Cat. No. 351. JIFFY T[...]

  • Página 9

    2-1 SECTION 2 INITIAL SET -UP AND INST ALLA TION Before you remove or replace the Cat. No. 240A Optical Pre-Amp or the Cat. No. 249 Power Supply Card, first disconnect AC power from the CP65 to protect the speakers and the CP65 from damage. For all other modules in the CP65, first switch to BYPASS; you can then safely remove or replace the desired [...]

  • Página 10

    2-2 Locate the power amplifiers away from the Cat. No. 240A optical preamplifier to avoid hum pickup problems. STEP 4 Disconnect power from the existing cinema sound equipment. STEP 5 Disconnect all cabling from the existing cinema sound processing system, but do not disconnect the wiring from power amplifiers, etc. STEP 6 Check that the CP65 volta[...]

  • Página 11

    2-5 STEP 9 Next, check the jumpers in the following locations: Cat. No. 441 Surround Equalization, Subwoofer and SR • D Interface Card (if fitted). J3 J2 High Cat. No. 441 J1 Low Subwoofer Level Range High Low Output Level Range J4 Optical Subwoofer Cr ossover Frequency Surr ound Ster eo Mono 100 Hz 50 Hz auto subwoofer off The Cat. No. 441 has f[...]

  • Página 12

    2-6 Cat. No. 242, B-Chain Card Jumper Holder (for storage) J1 Cat. No. 242 Mono low frequency filter OFF 100mV in 1V in Magnetic Input Sensitivity Setting J5 J6 J7 J8 Cut jumpers for high sensivity power amplifiers J1 Mono LF cut In/Out: selects optional low frequency cut when Mono (format 01) is selected. In some cases the extended low frequency r[...]

  • Página 13

    2-7 Cat. No. 443, Control Logic Card Connect center pad to desir ed wake-up state pad (factory setting shown). Cannot select r emote faders Can select r emote faders REMOTE/LOCAL F ADER JUMPERS T ur ns of f surr ound channel in non-sync T ur ns on surr ound channel in non-sync IN MUTE LIVE J1 J3 W ake up in remote W ake up in local 01 04 05 NS 2:4 [...]

  • Página 14

    2-8 CP65 Backplane J16, J17 J24 Magnetic format headers : In the standard configuration the CP65 is fitted with two channels of A-type noise reduction and therefore does not provide processing for signals entering through the Mag/Aux inputs on TB3 and TB4. Fitting Cat. No. 300 SR/A modules in place of the normal Cat. No. 350 SR modules provides the[...]

  • Página 15

    2-9 CP65-300 In a CP65-300 (when Cat. No . 300 modules are fitted in place of the normal Cat. No . 350 modules) J16 and J18 should be rotated so that the words “ Format 42 ” appears the right way up. With J24 in the “ NR ” position input signals will be A-type decoded when the Mag/Aux format is selected. With J24 in the “ NO NR ” positi[...]

  • Página 16

    2-10 Cat. No. 241 Surround Equalization and Optical Bass Extension. Module (if fitted). High subwoofer output Cat. No. 241 J1 Low subwoofer output J1 Optical Bass Extension output level : sets the output level range for the subwoofer channel. In the HIGH position J1 is set at the factory for a power amplifier input sensitivity of between 90 mV and [...]

  • Página 17

    2-11 STEP 10 If they are not already installed in the CP65 card cage, install all of the cards for your system as shown. Card Descriptions : Dolby Dolby Dolby Dolby Dolby SR R S Dolby THESE MODULES ARE NECESSARY FOR BYP ASS OPERA TION 2-channel Lt Rt n-sync surr gain Q power supply status (L,R) Lt/Rt (C) Lt 450 A (S) Rt 450 A on gnd Cat. No. 242 B [...]

  • Página 18

    2-12 Slot No. Card Function 5 Cat. No. 222 Contains two channels of Dolby A-type noise Two-channel Noise reduction circuitry with LED indicators to set Reduction Module Dolby Level. 6 Cat. No. 150 Derives left, right, center, and surround 2:4 Channel Decoder information from the two optical tracks on the Card film. 7,8,9 Cat. No. 64B Contains trebl[...]

  • Página 19

    2-13 Slot No. Card Function 13 Cat. No. 249 Contains a semi-regulated power supply with Power Supply Module nominal outputs of +15V, -15V, and 24V. Also contains the bypass amplifier, gain trimmer, and a +12V bypass power supply. 14 Cat. No. 259 Contains two power transformers (main and Transformer Module bypass) that convert mains voltage AC to lo[...]

  • Página 20

    2-14 ADDITIONAL INFORMATION FOR THE SAFE OPERATION OF THE CP65 To ensure proper operation and guard against potential shock hazard, the CP65 must be connected only to a properly wired, grounded (earthed) mains receptacle. If you are uncertain about the wiring of your mains outlet do not use it. Consult a qualified electrician. The power cord is sup[...]

  • Página 21

    2-15 GB D F I S NL IMPOR T ANT SAFETY NOTICE This unit complies with the safety standard IEC65. T o ensure safe operation and to guar d against potential shock hazard or risk of fir e, the following must be observed: • If the unit has a voltage selector , ensure that it is set to the corr ect mains voltage for your supply . If there is no voltage[...]

  • Página 22

    2-16 STEP 11 Turn the front pannel FADER fully down, then connect the CP65 to mains power. Model CP65 STEP 12 With the NORMAL/BYPASS switch (accessible with the front door open) in the NORMAL position, verify that all three LEDs on the Cat. No. 249 Power Supply Module are lit. Close the front door and verify that format 04 Dolby stereo optical with[...]

  • Página 23

    2-17 4. Power amplifiers . Disconnect from the CP65 and ground the inputs to determine if the power amplifiers are causing hum problems. With CP65 FADER turned up and format 04 selected: 5. Solar cell wiring . Check the shield connections. Cell wiring should be placed away from mains and other wiring. 6. Exciter lamp power supply . Check for ripple[...]

  • Página 24

    3-1 SECTION 3 AN OVERVIEW OF THE ALIGNMENT PROCEDURE This section is an overview of the general principles involved in the alignment of Dolby cinema equipment. It is useful to develop an understanding of why the CP65 is aligned as described in this manual. If the installer is already familiar with these principles, or is in a hurry to complete the [...]

  • Página 25

    3-2 and with a broad range of speakers. Accurate equalization requires the use of standardized acoustic measurement procedures. A pink noise generator provides a continuous random noise signal that covers the total bandwidth and is used to measure and adjust the response of the loudspeakers. The use of random noise eliminates the problems inherent [...]

  • Página 26

    3-3 Many loudspeakers used in theatres are far from ideal and require boosting of the low- and high-frequency extremes in order to produce an approximation of the standard reference response curve. Bass and treble controls—centered on the turnover points of typical loudspeakers—lift the ends of the spectrum without the need for large amounts of[...]

  • Página 27

    4-1 SECTION 4 A-CHAIN ALIGNMENT The A-chain is the part of the sound system that covers the film path, solar cell, optical preamplifier, slit loss equalizer and Dolby noise reduction circuit. The CP65 does not contain a magnetic A-chain but has facilities for switching external magnetic preamplifiers into the B-chain. An overview of external magnet[...]

  • Página 28

    A-Chain Alignment Procedures Step No. 4-2 Indication Action a. Preliminary Procedures 1 2 3 A-Chain Alignment Procedures Notes 4-3 a. Preliminary Procedures Inspect the lateral film guides for evidence of cuts, cracks, surface defects, and any foreign materials that could impair the film guiding. Clean as required or replace the guides, as necessar[...]

  • Página 29

    A-Chain Alignment Procedures Step No. 4-4 Indication Action 70 TO 80% OF RA TED VOL T AGE a. Preliminary Procedures ✓ 4 5 A-Chain Alignment Procedures Notes 4-5 a. Preliminary Procedures Remove the existing exciter lamp and replace with a new lamp. Adjust the exciter lamp DC voltage to 70% to 85% of the rated voltage and verify that there is no m[...]

  • Página 30

    A-Chain Alignment Procedures Step No. 4-6 Indication Action b. Optical Preamplifier Adjustments 1 2 3 Dolby Rt Lt Lt Rt gnd Proj. 2 hf GAIN hf GAIN Rt tp Rt Lt Lt tp Proj. 1 hf GAIN hf GAIN signal present Cat. No. 240A A-Chain Alignment Procedures Notes 4-7 b. Optical Preamplifier Adjustments Connect the cells to the correct CP65 input terminals vi[...]

  • Página 31

    A-Chain Alignment Procedures Step No. 4-8 Indication Action b. Optical Preamplifier Adjustments Mono 01 format Mono 01 format 4 5 6 Dolby Rt Lt Lt Rt gnd Proj. 2 hf GAIN hf GAIN Rt tp Rt Lt Lt tp Proj. 1 hf GAIN hf GAIN signal present Cat. No. 240A Cat. No. 240A X Y Proj. 1 Status RV101 Gain RV102 hf RV201 Gain RV202 hf TP501 L tp TP502 R tp R L RV[...]

  • Página 32

    A-Chain Alignment Procedures Step No. 4-10 Indication Action b. Optical Preamplifier Adjustments L L L L RR RR ✓ ✓ OSCILLOSCOPE TRACES Rt Lt CAT NO. 222 7 8 Dolby Rt Lt Lt Rt gnd Proj. 2 hf GAIN hf GAIN Rt tp Rt Lt Lt tp Proj. 1 hf GAIN hf GAIN signal present Cat. No. 240A A-Chain Alignment Procedures Notes 4-11 b. Optical Preamplifier Adjustme[...]

  • Página 33

    A-Chain Alignment Procedures Step No. 4-12 Indication n Action b. Optical Preamplifier Adjustments Rt Lt CAT NO. 222 9 10 11 REPEAT AND LR 9 8 OSCILLOSCOPE TRACE CAT. NO. 97 TEST FILM Rt Lt Lt Rt gnd Proj. 2 hf GAIN hf GAIN Rt tp Rt Lt Lt tp Proj. 1 hf GAIN hf GAIN signal present Rt Lt Cat. No. 240A A-Chain Alignment Procedures Notes 4-13 b. Optica[...]

  • Página 34

    A-Chain Alignment Procedures Step No. 4-14 Indication Action ✓ x x Out of phase Incorrect azimuth . . . . 0 0 0 0 5 5 5 5 . . . . 1 1 1 1 . . . . 2 2 2 2 . . . . 4 4 4 4 . . . . 8 8 8 8 1 1 1 1 . . . . 6 6 6 6 3 3 3 3 . . . . 1 1 1 1 5 5 5 5 6 6 6 6 . . . . 3 3 3 3 1 1 1 1 2 2 2 2 . . . . 5 5 5 5 k k k k H H H H z z z z d d d d B B B B – – ?[...]

  • Página 35

    A-Chain Alignment Procedures Step No. 4-16 Indication Action b. Optical Preamplifier Adjustments . . . . 0 0 0 0 5 5 5 5 . . . . 1 1 1 1 . . . . 2 2 2 2 . . . . 4 4 4 4 . . . . 8 8 8 8 1 1 1 1 . . . . 6 6 6 6 3 3 3 3 . . . . 1 1 1 1 5 5 5 5 6 6 6 6 . . . . 3 3 3 3 1 1 1 1 2 2 2 2 . . . . 5 5 5 5 k k k k H H H H z z z z d d d d B B B B – – – ?[...]

  • Página 36

    A-Chain Alignment Procedures Step No. 4-18 Indication Action 16 17 FOR PROJECTOR NO. 2 REPEAT 1 → 16 Rt Lt CAT NO. 222 Dolby Rt Lt Lt Rt gnd Proj. 2 hf GAIN hf GAIN Rt tp Rt Lt Lt tp Proj. 1 hf GAIN hf GAIN signal present Cat. No. 240A b. Optical Preamplifier Adjustments A-Chain Alignment Procedures Notes 4-19 b. Optical Preamplifier Adjustments [...]

  • Página 37

    c. Magnetic Preamplifier Adjustments Magnetic Alignment The CP65 in its normal configuration does not provide noise reduction for signals entering through the Magnetic/Aux input. However an optional configuration using Cat. No. 300 SR/A modules in place of the normal Cat. No. 350 SR modules can be used for playing 70 mm Dolby Stereo prints. To use [...]

  • Página 38

    Magnetic Alignment c. Magnetic Preamplifier Adjustments 7. Remove the Cat. No. 242 card and locate the reversible plug-in Magnetic Input Sensitivity header. 100mV in 1V in The CP65 accepts a nominal operating input level of either 100 mV or 1V — chosen by the position of the reversible plug-in header. The input impedance of the CP65 is 100K at bo[...]

  • Página 39

    SECTION 5 B-CHAIN ALIGNMENT 5-1[...]

  • Página 40

    B-Chain Alignment Procedures Action Indication Step No. 5-2 a. Setting Room Equalization NORMAL BYPASS bypass (switch behind panel) 1 CINEMA EQUALIZER MODULE CAT. No. 64B Dolby Laboratories Inc. San Francisco and London. L CINEMA EQUALIZER MODULE CAT. No. 64B Dolby Laboratories Inc. San Francisco and London. C CINEMA EQUALIZER MODULE CAT. No. 64B D[...]

  • Página 41

    B-Chain Alignment Procedures Action Indication Step No. 5-4 a. Setting Room Equalization 4 5 Cat. No. 85 Cat. No. 150 B-Chain Alignment Procedures Notes 5-5 Remove the Cat. No. 150 Card. Note that when the Cat. No. 150 card is removed, two card edge connectors are exposed on the backplane and that another slot to the immediate left of the Cat. No. [...]

  • Página 42

    B-Chain Alignment Procedures Action Indication Step No. 5-6 a. Setting Room Equalization 5 CONT'D NORMAL BYPASS bypass (switch behind panel) 6 7 ON PO WER AMP B-Chain Alignment Procedures Notes 5-7 Set all the gain controls on all power amplifiers to a known repeatable setting, but do not turn amplifiers on. The preferred setting for the ampli[...]

  • Página 43

    B-Chain Alignment Procedures Action Indication Step No. 5-8 0 1 2 3 4 5 6 7 8 9 10 select local/remote mute local active a. Setting Room Equalization 0 1 2 3 4 5 6 7 8 9 10 NORMAL BYPASS 0 1 2 3 4 5 6 7 8 9 10 select local/remote mute local active 04 Dolby Stereo A-type auto subwoofer o f f C A T . NO. 441 Subwoofer o f f 8 9 10 11 B-Chain Alignmen[...]

  • Página 44

    B-Chain Alignment Procedures Action Indication Step No. 5-10 a. Setting Room Equalization 12 13 → 12 11 REPEA T Dolby gain mono non-sync gain points test mono eq Ls R C L Ls R C L gnd Ls R C L R L signal present Cat. No. 242 Dolby gain mono non-sync gain points test mono eq Ls R C L Ls R C L gnd Ls R C L R L signal present Cat. No. 242 O F F 8 0 [...]

  • Página 45

    B-Chain Alignment Procedures Action Indication Step No. 5-12 a. Setting Room Equalization bypass (switch behind panel) NORMAL BYPASS NORMAL BYPASS 04 Dolby Stereo A-type 14 15 .05 .1 .2 .4 .8 1.6 3.15 6.3 12.5 kHz dB –10 +5 0 –5 +10 2.0 8.0 B-Chain Alignment Procedures Notes 5-13 a. Setting Room Equalization Change the NORMAL/BYPASS switch to t[...]

  • Página 46

    B-Chain Alignment Procedures Action Indication Step No. 5-14 a. Setting Room Equalization .05 .1 .2 .4 .8 1.6 3.15 6.3 12.5 kHz dB –10 +5 0 –5 +10 2.0 8.0 .05 .1 .2 .4 .8 1.6 3.15 6.3 12.5 kHz dB –10 +5 0 –5 +10 2.0 8.0 16 ✓ X X 17 x Do not adjust B-Chain Alignment Procedures Notes 5-15 a. Setting Room Equalization While observing the fre[...]

  • Página 47

    B-Chain Alignment Procedures Action Indication Step No. 5-16 18 19 20 a. Setting Room Equalization Paul B-Chain Alignment Procedures Notes 5-17 a. Setting Room Equalization When equalization is completed, the average of the 27 third-octave band controls should be approximately 12 o’clock (not mostly up or down). If you find the controls are set d[...]

  • Página 48

    B-Chain Alignment Procedures Action Indication Step No. 5-18 a. Setting Room Equalization b. Adjusting L,C,R Gain 0 1 2 3 4 5 6 7 8 9 10 21 22 23 0 1 2 3 4 5 6 7 8 9 10 b. Adjusting L,C,R Gain 1 REPEAT L R 14 → 21 14 → 21 Dolby gain mono non-sync gain points test mono eq Ls R C L Ls R C L gnd Ls R C L R L signal present Cat. No. 242 O FF 8 0 70[...]

  • Página 49

    B-Chain Alignment Procedures Action Indication Step No. 5-20 Dolby gain mono non-sync gain points test mono eq Ls R C L Ls R C L gnd Ls R C L R L signal present Cat. No. 242 c. Setting Mono Gain 1 MIDPOINT 2 01 Mono Dolby gain mono non-sync gain points test mono eq Ls R C L Ls R C L gnd Ls R C L R L signal present Cat. No. 242 O FF 8 0 7 0 6 0 5 0 [...]

  • Página 50

    B-Chain Alignment Procedures Action Indication Step No. 5-22 0 1 2 3 4 5 6 7 8 9 10 select local/remote mute local active auto subwoofer of f CA T . NO. 441 1 2 3 d. Subwoofer Alignment (Cat. No. 441) 10 Dolby Stereo Digital B-Chain Alignment Procedures Notes 5-23 d. Subwoofer Alignment (Cat. No. 441) CP65 processors may be supplied in a number of [...]

  • Página 51

    B-Chain Alignment Procedures Action Indication Step No. 5-24 4 5 6 7 d. Subwoofer Alignment (Cat. No. 441) Dolby n-sync surr gain Q on present signal gnd gain bass Q mid freq cut treble tp bass Q freq mid cut treble gain mag/dig opt gain off auto freq cut tp present signal Subwoofer Left Surround Right Surround Cat. No. 441 D olb y n-sync surr gain[...]

  • Página 52

    B-Chain Alignment Procedures Action Indication Step No. 5-26 8 9 10 d. Subwoofer Alignment (Cat. No. 441) Dolby n-sync surr gain Q on present signal gnd gain bass Q mid freq cut treble tp bass Q freq mid cut treble gain mag/dig opt gain off auto freq cut tp present signal Subwoofer Left Surround Right Surround Cat. No. 441 Dolby n-sync surr gain Q [...]

  • Página 53

    B-Chain Alignment Procedures Action Indication Step No. 5-28 .05 .1 .2 .4 .8 1.6 3.15 6.3 12.5 kHz dB –10 +5 0 –5 +10 CENTER CHANNEL NOTE THIS LEVEL 11 1 12 auto subwoofer off CA T . NO. 441 13 d. Subwoofer Alignment (Cat. No. 441) REPEAT → 8 10 auto subwoofer off CA T . NO. 441 04 Dolby Stereo A-type B-Chain Alignment Procedures Notes 5-29 d[...]

  • Página 54

    B-Chain Alignment Procedures Action Indication Step No. 5-30 .05 .1 .2 .4 .8 1.6 3.15 6.3 12.5 kHz dB –10 +5 0 –5 +10 .05 .1 .2 .4 .8 1.6 3.15 6.3 12.5 kHz dB –10 +5 0 –5 +10 14 d. Subwoofer Alignment (Cat. No. 441) 15 Dolby n-sync surr gain Q on present signal gnd gain bass Q mid freq cut treble tp bass Q freq mid cut treble gain mag/dig o[...]

  • Página 55

    B-Chain Alignment Procedures Action Indication Step No. 5-32 e. Surround Equalization Alignment (Cat. No. 441) 1 2 OFF RIGHT 3 85 dBC STEREO SURROUND 88 dBC MONO SURROUND Dolby gain mono non-sync gain points test mono eq Ls R C L Ls R C L gnd Ls R C L R L signal present Cat. No. 242 04 Dolby Stereo A-type O F F 8 0 7 0 6 0 50 4 0 30 Re S B-Chain Al[...]

  • Página 56

    Action Indication Step No. 5-34 B-Chain Alignment Procedures e. Surround Equalization Alignment (Cat. No. 441) 3 5 4 Dolby n-sync surr gain Q on present signal gnd gain bass Q mid freq cut treble tp bass Q freq mid cut treble gain mag/dig opt gain off auto freq cut tp present signal Subwoofer Left Surround Right Surround Cat. No. 441 Dolby n-sync s[...]

  • Página 57

    Action Indication Step No. 5-36 B-Chain Alignment Procedures e. Surround Equalization Alignment (Cat. No. 441) 6 9 REPEAT 6 → 8 8 7 Dolby n-sync surr gain Q on present signal gnd gain bass Q mid freq cut treble tp bass Q freq mid cut treble gain mag/dig opt gain off auto freq cut tp present signal Subwoofer Left Surround Right Surround Cat. No. 4[...]

  • Página 58

    Action Indication Step No. 5-38 B-Chain Alignment Procedures 85 dBC STEREO SURROUND 88 dBC MONO SURROUND e. Surround Equalization Alignment (Cat. No. 441) 10 1 13 REPEAT 3 → 10 1 12 85 dBC Dolby n-sync surr gain Q on present signal gnd gain bass Q mid freq cut treble tp bass Q freq mid cut treble gain mag/dig opt gain off auto freq cut tp present[...]

  • Página 59

    Action Indication Step No. 5-40 B-Chain Alignment Procedures = 17 e. Surround Equalization Alignment (Cat. No. 441) 16 bypass (switch behind panel) NORMAL BYPASS 14 15 10 Dolby Stereo Digital NORMAL BYPASS Cat. No. 150 Cat. No. 85 B-Chain Alignment Procedures Notes 5-41 e. Surround Equalization Alignment (Cat. No. 441) Thread and play the Cat. No. [...]

  • Página 60

    f. Adjustment of Surround Delay 5-42 B-Chain Alignment Procedures The CP65 incorporates a delay line in the surround channel to ensure that sound from the rear of the theatre arrives at the listeners’ ears approximately 20 milliseconds after the arrival of sound from the front speakers.The delay is set into the Cat. No. 150 card via a thumbwheel [...]

  • Página 61

    Action Indication Step No. 5-44 B-Chain Alignment Procedures g. Adjustment of Bypass Gain NORMAL BYPASS 1 2 3 4 0 1 2 3 4 5 6 7 8 9 10 select local/remote mute local active xx dBC 04 Dolby Stereo A-type D olb y Rt Lt Lt Rt gnd Proj. 2 hf GAIN hf GAIN Rt tp Rt Lt Lt tp Proj. 1 hf GAIN hf GAIN signal present Cat. No. 240A B-Chain Alignment Procedures[...]

  • Página 62

    Action Indication Step No. 5-46 B-Chain Alignment Procedures NORMAL BYPASS bypass (switch behind panel) g. Adjustment of Bypass Gain 6 7 5 Dolby 15V 15V 24V gain bypass status supply power Cat. No. 249 O FF 80 7 0 6 0 50 40 3 0 xx dBC -3 dB yy dBC FROM 4 ➝ B-Chain Alignment Procedures Notes 5-47 g. Adjustment of Bypass Gain Place the NORMAL/BYPAS[...]

  • Página 63

    Action Indication Step No. 5-48 B-Chain Alignment Procedures 60 non-sync 1 4 2 4 3 NORMAL BYPASS 0 1 2 3 4 5 6 7 8 9 10 select local/remote mute local active h. Adjustment of Non-sync Gain B-Chain Alignment Procedures Notes 5-49 h. Adjustment of Non-sync Gain Connect a cassette deck or CD player to the from non sync terminals on terminal block TB1 [...]

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    Action Indication Step No. 5-50 B-Chain Alignment Procedures h. Adjustment of Non-sync Gain 5 6 D olby gain mono non-sync gain points test mono eq Ls R C L Ls R C L gnd Ls R C L R L signal present Cat. No. 242 Dolby n-sync surr gain Q on present signal gnd gain bass Q mid freq cut treble tp bass Q freq mid cut treble gain mag/dig opt gain off auto [...]

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    Action Indication Step No. 5-52 B-Chain Alignment Procedures i. Adjustment of Mono Gain and Equalization 1 NORMAL BYPASS 2 01 Mono 3 4 Dolby gain mono non-sync gain points test mono eq Ls R C L Ls R C L gnd Ls R C L R L signal present Cat. No. 242 5 REPEAT PAGE 5-20 STEP 2 bypass (switch behind panel) NORMAL BYPASS 6 7 B-Chain Alignment Procedures [...]

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    Action Indication Step No. 5-54 B-Chain Alignment Procedures j. Final Checks NORMAL BYPASS 1 4 NORMAL BYPASS 3 04 Dolby Stereo A-type 2 JIFFY TEST FILM CN 251–A subjective film for testing theatre sound DOLBY STEREO Running time: 8 minutes. Picture format: 1.85:1 widescreen or 2.35:1 anamorphic. Sound format: 04 stereo optical with surround Dolby[...]

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    6-1 SECTION 6 REFERENCE DIAGRAMS[...]

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    Cat. No. 22 2 Dual Noise Reductio n M odule[...]

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    CAT. NO. 240A OPTICAL PRE-AMPLIFIER CARD Slit Loss EQ Indicator power P1 LED P2 LED 25 Hz-18 kHz 25 Hz-18 kHz Slit Loss EQ Slit Loss EQ Slit Loss EQ 6 7 Proj 1 Left - + 2 1 Proj 2 Left - + B C Proj 1 Right - + H J Proj 2 Right - + 3 + N Gnd for Proj 2 C/O status 12 10 Lt output Rt output 14 R 16 T Aux outputs P1L P2L P1R P2R INPUTS OUTPUTS[...]

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    Cat. No. 24 1 Opt ical B ass E xten sion and S urro und E qualiz er Car d[...]

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    Cat. No. 242 B -Chai n F acilities Car d[...]

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    Cat. No. 249 P ower Suppl y Ca r d[...]

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    Cat. No. 259 Tran sf or m er Mo dul e[...]

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    CAT. NO. 441 SURROUND EQUALIZER, SUBWOOFER AND DIGITAL INPUT CARD C T S R 10 11 12 B 3 + + + + + A 180 Hz 180 Hz 100 Hz 50 Hz 20 kHz M L D H EQ EQ Downward Expander EQ Fader Fader 8 1 7 SUBWOOFER SURROUND LOGIC Left Right L opt C opt R opt Le mag Re mag Dolby Digital Test FA FB FC Inh SW Inh Surr OUTPUTS Left Surround Right Surround Subwoofer INPUT[...]

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    Ca t. N o. 4 43 Contro l Lo gic Card[...]

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    6-12 Note: The Cat. No. 384 operates from + and – 8V. These voltages are created from the + and – 15V rails by regulators IC3 and IC4, mounted at the lower right hand corner of the backplane. J105 pin 3 is –8V and pin 4 is +8V. C C C C P P P P 6 6 6 6 5 5 5 5 P P P P O O O O W W W W E E E E R R R R D D D D II I I S S S S T T T T R R R R II I [...]

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    A.1 APPENDIX A CHECKING PHASING OF SPEAKERS Loudspeakers are two-wire devices that can be connected incorrectly as well as correctly. Incorrectly wired loudspeakers in a multiple-speaker installation cause degraded performance. For example, woofers in an array must work together to generate a solid wavefront of sound pressure. If some woofers are m[...]

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    B.1 APPENDIX B EFFECT OF CHANGES IN SLIT HEIGHT ON SLIT LOSSES The slit has a finite height that cannot be reduced without a simultaneous reduction in the light output and, thus, the electrical output of the system. The exciter lamp supply output could be increased in an effort to compensate, but this would shorten the life of the lamp. Equally, th[...]

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    C-1 APPENDIX C CP65M (MONO) INSTRUCTIONS 1. Operation The CP65 can be configured for mono-only operation. Systems so equipped are shipped with only the center channel Cat. No. 64 house equalization module and without the Cat. No. 150 surround decoder module and Cat. No. 241 or 441 surround equalizer and optical bass extension board. A Cat. No. 327A[...]

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    C.2 Sch ematic Cat. No. 3 27A A3C2 98 4 re v 2[...]

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    D.1 APPENDIX D BACKPLANE CONNECTIONS LIST CP65 Backplane Connections T erminal Block TB1 T erminal Block TB2 1 Left non-sync i/p 1 [automation select] projector changeover 2 Right non sync i/p 2 ground 3 ground 3 Cat. No. 122 connection “C” 4 S0 [automation select] fmt 01 Mono 4 Cat. No. 122 connection “E” 5 S1 [automation select] fmt 04 Do[...]

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    D.2 D connector J18 1 S0 [automation select] fmt 01 Mono 2 S1 [automation select] fmt 04 Dolby A-type 3 S2 [automation select] fmt 05 Dolby SR [optical] 4 S3 [automation select] fmt 60 non-sync via matrix 5 S4 [automation select] fmt 10 Digital 6 S5 [automation select] fmt 42 mag aux with NR 7 S6 [automation select] fmt 60 non-sync standard 8 S7 [a[...]