® Dolby CP650 Digital Cinema Processor Installation Manual Issue 6 Part Number 91569
Dolby® CP650 Installation Manual Dolby Laboratories, Inc. Corporate Headquarters Dolby Laboratories, Inc. 100 Potrero Avenue San Francisco, CA 94103-4813 USA Telephone 415-558-0200 Fax 415-863-1373 www.dolby.com European Headquarters Dolby Laboratories, Inc.
Dolby® CP650 Installation Manual Table of Contents Regulatory Notices......................................................................................................................viii CP650 Operating System Software History...............................................................................xi Chapter 1 Introduction 1.1 Dolby Catalog Number Listing ................................................................1-2 1.2 List of Formats Available ...........................................
Dolby® CP650 Installation Manual 4.8 4.7.1 Crossover Level Adjustment with Cat. No. 791 Crossover......4-13 4.7.2 Setting Coarse EQ.....................................................................4-14 4.7.3 Setting Fine EQ.........................................................................4-15 4.7.4 The EQ Assist Feature ..............................................................4-16 4.7.5 Setting Subwoofer Channel EQ ................................................4-17 4.7.
Dolby® CP650 Installation Manual 7.11 7.12 7.13 7.14 7.15 7.16 7.17 7.18 7.19 7.20 7.21 7.22 Assigning Front-Panel Buttons to Formats ..............................................7-9 Format 80/81 PCM Options .....................................................................7-9 Reversion Mode......................................................................................7-10 Auto Surround EX Disable.....................................................................7-10 Noise Gating ...........
Dolby® CP650 Installation Manual List of Figures Figure 1-1 Surround Speaker/Amplifier Switching for 5.1-Channel Use ....................................1-6 Figure 1-2 Surround Speaker/Amplifier Switching for Dolby Digital Surround EX Mode ........1-6 Figure 2-1 Fuse Locations on Earlier Units with External Fuses.................................................2-1 Figure 2-2 Fuse Locations on Units with Internal Fuses..............................................................
Dolby® CP650 Installation Manual List of Tables Table 1-1 Formats Supported by the Various CP650 Models......................................................1-3 Table 2-1 Solar Cell Preamp Board Connectors ..........................................................................2-5 Table 2-2 Examples of Available Balanced ↔ Unbalanced Adapters ......................................2-11 Table 7-1 Surround Delays Based on Theatre Dimensions (in Feet) ...........................................
Dolby® CP650 Installation Manual Regulatory Notices FCC NOTE: 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.
Dolby® CP650 Installation Manual 14. Do not expose the apparatus to dripping or splashing and no objects filled with liquids, such as vases, shall be placed on the apparatus. 15. CAUTION: Troubleshooting must be performed by a trained technician. To reduce the risk of electric shock, do not attempt to service this equipment unless you are qualified to do so. 16. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other.
Dolby® CP650 Installation Manual 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.
Dolby® CP650 Installation Manual CP650 Operating System Software History V.1.0.4.4 • First product shipments. • Covered in installation manual, Issue 1. V.1.1.3.0 • Added support for Cat. No. 790 or 794 card: Dolby® Digital Surround EXTM decoder and AES3 input for stereo pulse-code modulated (PCM) or Dolby Digital bitstreams from consumer products. • Covered in installation manual addendum, Part No. 91743. V.1.1.5.0 • Added support for Cat. No. 779 remote control unit and Cat. No. 771 remote fader unit.
Dolby® CP650 Installation Manual V2.1.x.y (where x and y may be any numbers) • Added support for the Cat. No. 790 Dolby Digital Surround EX Decoder Card with four S/PDIF digital inputs. This card replaces the Cat. No. 794, adding three additional S/PDIF digital inputs. • Added support for the Cat. No. 791 Digital Crossover Card. This card plugs into the Cat. No. 790, providing two- and three-way screen channel crossover capability along with support for Left Extra/Right Extra screen channels. V2.2.x.
Dolby® CP650 Installation Manual Chapter 1 Introduction The Dolby® CP650 Digital Cinema Processor is a self-contained, all-digital cinema processor capable of supporting Dolby Digital Cinema systems, as well as Dolby Digital, Dolby Digital Surround EXTM, Dolby SR, Dolby A-type, and Academy mono film sound playback.
Dolby® CP650 Installation Manual 1.1 Introduction Dolby Catalog Number Listing Cat. No. 771 Cat. No. 772B Cat. No. 773 Cat. No. 774A Cat. No. 775 Cat. No. 775DC Cat. No. 776 Cat. No. 776DC Cat. No. 777 Cat. No. 778 Cat. No. 779 Cat. No. 790 Cat. No. 791 Cat. No. 795 Cat. No. 792 Cat. No. 794 Cat. No.
Dolby® CP650 Installation Manual 1.2 Introduction List of Formats Available The formats supported by each CP650 model are listed in Table 1-1. See Appendix C for a complete definition of each format.
Dolby® CP650 Installation Manual Introduction CP650SR Format 85 86 87 88 89 90 92 93 Description CP650D CP650 CP650XO CP650DC Cat. No. 773 Cat. No.790 Cat. No. 790 Cat. No. 791 Cat. No.
Dolby® CP650 Installation Manual 1.3 Introduction About Dolby Digital Surround EX Dolby Digital Surround EX adds a third surround channel to digital film sound, a concept first envisioned by sound designers at Lucasfilm’s Skywalker Sound postproduction facility. It gives sound mixers a new level of creative freedom. Dolby Digital Surround EX is fully compatible with all current 5.1 digital sound formats and theatre systems.
Dolby® CP650 Installation Manual un d Ls Bsl su r ro Surround amplifiers Le ft Dolby CP650 Bsr Ls Rs d un ro ur ts gh Ri 10 Introduction Back surround left Back surround right Rs Ls Bsl Bsr Rs Dolby Digital 5.1 mode Figure 1-1 Surround Speaker/Amplifier Switching for 5.
Dolby® CP650 Installation Manual 1.4 Introduction Specifications For digital cinema installations that do not require film soundtrack playback, the CP650DC versions provide digital audio inputs only.
Dolby® CP650 Installation Manual Chapter 2 Installation The CP650 uses a universal switching power supply that can accommodate mains voltages from 100–120 VAC, and 200–240 VAC, at frequencies from 50 to 60 Hz. AC MAINS FUSE BYPASS FUSE AC MAINS FUSE BYPASS FUSE R D .C 05 5M 42 R D .C 05 5N 42 FB FB Figure 2-1 Fuse Locations on Units with Internal Fuses Figure 2-2 Fuse Locations on Earlier Units with External Fuses The CP650DC models do not include a bypass fuse. 2.
Dolby® CP650 Installation Manual Installation compartment. Damage will result. The polarizing clip must be attached on the right side of the carrier at the rear. Snap the fuse compartment door closed. 2.2 Check Bypass Supply Mains Voltage Setting Note: Skip this section if you are installing any of the CP650DC models (no bypass power supply.) The bypass power supply mains voltage selector switch is accessible through a hole in the top cover of the CP650.
Dolby® CP650 Installation Manual Installation Figure 2-4 Star Washers and Rack-Mounting Screws Proper shielding and termination of cables and cable assemblies are also very important. Follow the methods shown in the wiring diagrams. If you are installing a Dolby® Digital soundtrack reader, refer to its installation manual for mounting and alignment. 2.4 Mount the Auditorium Assist Microphone Auditorium AssistTM operation requires the use of the Cat. No. 735 microphone.
Dolby® CP650 Installation Manual 2.5.1 Installation Motor-Start Relays (Except CP650DC Models) 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. Projector motor-start contact closures provide this signal to the CP650. Isolated contact closures from mechanical or opto-isolated relays wired across projector motors must be used.
Dolby® CP650 Installation Manual Installation The 0 V point (audio ground) must be connected from the inboard reader board to the CP650 by a separate wire (or wires) along with the audio signal wires. The cable shield (screen) must be kept separate from the audio ground connections. It must be connected only to the chassis or enclosure of the equipment at each end. The following diagrams show two connectors on the Cat. No. 655 circuit board. The three-pin connector, J1, is used for the power connections.
Dolby® CP650 Installation Manual Installation – 1 CP650 Optical In Out 1+ + 3 Gnd Out 1– Shield 1 9 2* Gnd – 4 2 8 3 7 Out 2+ 4 + 6 6 Gnd Shield 5* Cat.No.
Dolby® CP650 Installation Manual Installation For Non-EU Countries Only If it is necessary to use two- or four-conductor shielded cables, refer to the following wiring diagrams. J2 1 – 3 Gnd CP650 Optical In Out 1+ + Out 1– Belden 8451 or equivalent 1 9 2* Gnd – 4 2 8 3 7 Out 2+ 4 + 6 6 Gnd Shield 5* Cat.No.
Dolby® CP650 Installation Manual 2.5.4 Installation Analog Nonsync Sources The CP650 has two sets of analog nonsync inputs, designated Nonsync In 1 (format 60), and Nonsync In 2 (format 61). The input impedance is 21 kΩ. They both have a wide range of input level adjustment, but to further extend the possible range of input levels, the two sets of inputs have different gain adjustment ranges: • The Nonsync In 1 input will accommodate input levels between approximately 0.2 and 4 V.
Dolby® CP650 Installation Manual Installation Connecting to the Digital Audio Input The external electrical connections to the optional boards in the CP650 are available on the 25-pin D-connector marked Option Card I/O on the rear panel of the CP650. Because the boards have different functionality, each pin on this connector changes its function depending on which optional card is installed. Refer to Table B-2 for the signal definitions.
Dolby® CP650 Installation Manual 2.5.6 Installation Digital Audio Inputs—General Information There are two professional interface formats used for digital audio: AES/EBU (also known as AES3) and AES-3id. These stream the same digital data and professional audio header information over copper conductor links, but use different types of conductors and connectors.
Dolby® CP650 Installation Manual Installation impedance compromises the integrity of the bitstream and may create an unreliable link between pieces of equipment, particularly with long cable runs. Multiple Sources—Conversion Between Interface Standards Although some details of the bitstreams used in the AES and S/PDIF standards are different, the audio information is exactly the same.
Dolby® CP650 Installation Manual 2.5.7 Installation Exploded View and Board Locations Cat. No. 790 Dolby Digital Surround EX Decoder / Digital Aux. Input Card Cat. No. 773 Dolby Digital Decoder Cat. No. 791 Digital Crossover Card (for use with Cat. No. 790 only) Bypass Mains Voltage Selector Switch 115/230 VAC - or Cat. No. 778 Dolby Digital Surround EX Decoder / Digital I/O Card (Not present on CP650DC models) Cat. No. 774 System Controller AC Mains Fuse on Rear (Early Units) Cat. No.
Dolby® CP650 Installation Manual Projector 1 Installation Cat. No. 701 Digital Reader 2-Projector Changeover Single Projector AUDITORIUM ASSIST Microphone Projector 1 Inboard Digital Basement Reader +15V 100 mA MAX 2 1 S/PDIF Digital Output Source 21 1 Proj 1 Motor Start Relay SHIELD GROUND MUTE U2 NONSYNC U1 11 10 05 04 01 2 Projector Motor 3 1 5 Proj 2 Motor Start Relay 9 O AUTOMATION US 13 Wootton Bassett U.K.
Dolby® CP650 Installation Manual Installation AUDITORIUM ASSIST Microphone SHIELD GROUND MUTE U2 NONSYNC U1 11 10 05 04 01 UL 1 PA Microphone 1 (Or Mic-multiplexer for setup) +15V 100 mA MAX C red black 3 2 15 V phantom power switchable via front setup control panel dip switch number 3. 25 To Automation f 1 13 (See Interface Requirements in Appendix B) TM red black 3 2 AUD.
Dolby® CP650 Installation Manual Installation C UL O AUTOMATION US LISTED CP650 Digital Cinema Processor MUTE U2 NONSYNC U1 11 10 13 1 SERIAL DATA (RS-232) Wootton Bassett U.K. San Francisco U.S. PROFESSIONAL AUDIO EQUIPMENT 4J06 01 04 05 MOTOR START REMOTES AND AUD. FADER Dolby Digital READER 2 FADER red L+C+R IN N/C H/I OUTPUT ~ 50 - 60 Hz 120 W 100 - 240 Vac CAUTION 13 1 To reduce the risk of fire replace only with same type and rating 250V time-lag fuse.
Dolby® CP650 Installation Manual Installation C UL O AUTOMATION US CP650DC Digital Cinema Processor MUTE U2 NONSYNC U1 11 10 13 SERIAL DATA (RS-232) Wootton Bassett U.K. San Francisco U.S. LISTED PROFESSIONAL AUDIO EQUIPMENT 4J06 MIC. INPUT ETHERNET 1 01 04 05 REMOTES AND AUD.
Dolby® CP650 Installation Manual Installation C UL O AUTOMATION US LISTED CP650 Digital Cinema Processor MUTE U2 NONSYNC U1 11 10 13 1 SERIAL DATA (RS-232) Wootton Bassett U.K. San Francisco U.S. PROFESSIONAL AUDIO EQUIPMENT 4J06 01 04 05 MOTOR START REMOTES AND AUD. FADER Dolby Digital READER 2 FADER red L+C+R IN N/C H/I OUTPUT ~ 50 - 60 Hz 120 W 100 - 240 Vac CAUTION 13 1 To reduce the risk of fire replace only with same type and rating 250V time-lag fuse.
Dolby® CP650 Installation Manual Installation C UL O AUTOMATION US MUTE U2 NONSYNC U1 11 10 13 SERIAL DATA (RS-232) CP650DC Digital Cinema Processor Wootton Bassett U.K. San Francisco U.S. LISTED PROFESSIONAL AUDIO EQUIPMENT 4J06 MIC. INPUT ETHERNET 1 01 04 05 REMOTES AND AUD.
Dolby® CP650 Installation Manual Installation C UL O AUTOMATION US CP650 Digital Cinema Processor MUTE U2 NONSYNC U1 11 10 13 SERIAL DATA (RS-232) Wootton Bassett U.K. San Francisco U.S. LISTED PROFESSIONAL AUDIO EQUIPMENT 4J06 READER 1 01 04 05 MOTOR START REMOTES AND AUD. FADER Dolby Digital READER 2 black HearingImpaired System REMOTE FADER red L+C+R L L+ C C+ R R+ Ls Ls + Rs Rs + SW SW + IN N/C H/I OUTPUT ~ 50 - 60 Hz 120 W 100 - 240 Vac CAUTION FUSE T 6.
Dolby® CP650 Installation Manual Installation C UL O AUTOMATION US CP650DC Digital Cinema Processor MUTE U2 NONSYNC U1 11 10 13 SERIAL DATA (RS-232) Wootton Bassett U.K. San Francisco U.S. LISTED PROFESSIONAL AUDIO EQUIPMENT 4J06 MIC. INPUT ETHERNET 1 01 04 05 REMOTES AND AUD.
Dolby® CP650 Installation Manual Chapter 3 Front-Panel and Alignment Overview This chapter describes the features on the CP650 front panel, along with an overview of the general principles involved in the alignment of Dolby® cinema equipment. It is useful to develop an understanding of why the CP650 is aligned as described in this manual. If the installer is already familiar with the CP650 and these principles, or is in a hurry to complete the installation, this chapter may be read later.
Dolby® CP650 Installation Manual Front-Panel and Alignment Overview Front-Panel Display L Le C Re R Rs Bsr Bsl Ls SW Figure 3-2 Front-Panel Display Showing All Possible Channels Active Day-to-day operation of the CP650 is performed through interaction with this display. The 20-character, four-line LCD provides a readout of processor condition and operation mode. It can be used by the service engineer to align the CP650 if PC setup software is not used.
Dolby® CP650 Installation Manual Front-Panel and Alignment Overview The 0 shown on the bottom right is the Dolby Digital film error rate. The first indication of satisfactory digital film playback is the detection of a low error rate. The error rate is a number between 0 and 8. With a correctly aligned digital film reader, most films will play at an error rate of 6 or lower.
Dolby® CP650 Installation Manual Front-Panel and Alignment Overview Front-Panel Sound Format Display on Units with Earlier Software The bar graph display on CP650s running software earlier than version 2.1 is slightly different. Dolby Digital Surround EX board installed: Not installed: L C R Ls Rs SW Bsl Bsr L C R Ls Rs SW Figure 3-5 Front-Panel Display when Running Earlier Software Level Display The main fader level is displayed as a two-digit number. Starting from a display of 0.
Dolby® CP650 Installation Manual Front-Panel and Alignment Overview 10 3 1/3 db per step 0 -10 -20 -30 Output -40 Level (dB) 20 dB per step -50 -60 -70 -80 -90 0 1 2 3 4 5 6 7 8 9 10 Fader Level Figure 3-6 Fader Characteristic Projector Signal Indicators On the display, P1 and P2 show which projector optical input has been selected (not active on CP650DC models—P1 remains illuminated).
Dolby® CP650 Installation Manual Front-Panel and Alignment Overview Setup Control-Panel Access Door For use by the service engineer, the access door is opened to expose the setup control panel. Mute Button Pressing the mute button fades the audio output to all channels without disturbing the current main fader setting. The speed of fade-in and fade-out is separately adjustable from 0.2 to 5 seconds, using either the front-panel menu buttons or PC setup software.
Dolby® CP650 Installation Manual 3.2 Front-Panel and Alignment Overview The Setup Control Panel The setup control panel is located behind the front-panel access door. Mic Phantom Power ON Load baseline software during power-up Setup Mode Wakeup projector 2 A laptop PC can be connected to this RS-232 data port. Windows-based set-up software is available for aligning the CP650. This connector is duplicated on the rear panel of the CP650.
Dolby® CP650 Installation Manual Front-Panel and Alignment Overview Setup DIP Switch The eight-position DIP switch is used to set the functions shown. All switches are factory-set to down. Switches 2, 5, 7, and 8 are not used. DIP switch 6 is used to enter CP650 Setup mode. Lt/Rt Signal Presence LEDs These LEDs indicate that signals exist on the Lt and Rt channels from the film’s analog soundtrack. They flash during film playback in both normal and bypass operation.
Dolby® CP650 Installation Manual 3.3 Front-Panel and Alignment Overview Power Supply Voltage Test Points Six test points are located behind the front panel for measuring power supply voltages. They can be accessed by removing the front panel. See Section 9.3.1 for the voltage test ranges. Figure 3-9 shows the locations of the test points. A portion of the front subpanel, with the front panel removed, is also shown in this figure.
Dolby® CP650 Installation Manual Chapter 4 B-Chain Alignment 4.1 Check Theatre Equipment Thoroughly check the loudspeakers and power amplifiers for any sources of poor performance, using the suggested checklists below as a guide. Speakers • • • • • • • • • Loudspeaker cables—Check cable condition and confirm they are the correct gauge for the impedance of the speakers and the length of the run. Speaker wiring—Check that the speakers are connected to the correct power amp channel.
Dolby® CP650 Installation Manual • • B-Chain Alignment Check for blown fuses. Ensure that there is good air movement through power amplifiers. Air Conditioning If air-conditioning noise is audible in the theatre, arrange for lubrication of the motor and fan bearings, adjustment of belts and drives, and cleaning of filters to reduce the ambient noise to a minimum. 4.2 Microphone Placement Position a microphone multiplexer in the center of the listening area.
Dolby® CP650 Installation Manual 4.3 B-Chain Alignment Initial Setup 1. Set all the gain controls on all power amplifiers to a known, repeatable setting. The preferred setting for most amplifier gain controls is maximum. If a different setting is required in order to optimize the noise performance of the system, the controls should be locked in position or marked clearly. Caution: The following steps will cause the CP650 to output pink noise to the power amplifiers.
Dolby® CP650 Installation Manual 4.4 B-Chain Alignment Sound Pressure Level Calibration If your CP650 is equipped with a Cat. No. 791 Crossover Card, an initial setup is required before you begin the SPL calibration. If you do not have a Cat. No. 791 installed, skip to Section 4.4.2. 4.4.1 Initial Setup with Cat. No. 791 Crossover Installed Sound pressure level (SPL) calibration of a CP650 equipped with a Cat. No. 791 Crossover Card is performed with the crossover set to Full Range mode.
Dolby® CP650 Installation Manual B-Chain Alignment 6. The CP650 is shipped from the factory with the mic input-level control set to minimum. If necessary, adjust the mic input-level pot until the center area of the displayed pink noise moves to the middle of the scope screen. The trimpot is accessible through an opening in the setup panel. 7. With a sound pressure level meter, measure the noise level in the room. Hold the sound pressure level meter near the location of mic 1. 8.
Dolby® CP650 Installation Manual 4.5 B-Chain Alignment Initial Output-Level Calibration Each of the channels should now be adjusted to give a reasonable sound pressure level in the room. It is not necessary to get exact readings at this point because the levels will change slightly during equalization of the room. Exact output level adjustment will be performed after equalization. Note: If pink noise is not being generated, this indicates that the status of the digital input has changed.
Dolby® CP650 Installation Manual B-Chain Alignment 8. When all channels have been adjusted, press OK. Saving Changes appears on the front-panel screen. Note: If 4.5.2 Saving Changes..... ... is pressed before OK, all of the level settings will be lost. Subwoofer Channel The initial subwoofer level adjustment uses a displayed RTA reference line, established from the Center channel pink-noise level. The subwoofer level is adjusted to match the displayed reference line.
Dolby® CP650 Installation Manual Crossover Setup—CP650 with Cat. No. 791 If your CP650 is not equipped with a Cat. No. 791 Crossover Card, please skip to the next section. Two jumpers, located on the Cat. No. 772B board, must be set to their enabled position when a Cat. No. 791 Crossover Board is installed. CP650s shipped with a Cat. No. 791 board have the correct jumper setting. See Section 9.3.2 for instructions on gaining access to the jumpers. NO YES J2 C DOLBY LABORATORIES INC. MADE IN THE U.S.A.
Dolby® CP650 Installation Manual B-Chain Alignment The following parameters must be set before adjusting the room equalization in your auditorium: • • • • • • • Crossover mode (2-Way or 3-Way) Left Extra (Le) and Right Extra (Re) screen channel support (available only in 2-Way and Full Range crossover modes) Filter type used at each crossover point (Linkwitz-Riley or Butterworth) Filter corner frequency at each crossover point Filter slope (Butterworth filter type only) Delay Polarity inversion to check
Dolby® CP650 Installation Manual B-Chain Alignment Setting Butterworth Filter Characteristics The crossover filters designed into the Cat. No. 791 are adjustable to allow tailoring of the response to your particular system. For most applications, the default crossover filter, Linkwitz-Riley, should be used. The slopes in this filter are not adjustable. The filter has two cascaded two-pole Butterworth filters for the lowpass side, and a threepole filter for the highpass side at the crossover point.
Dolby® CP650 Installation Manual B-Chain Alignment Setting Crossover Corner Frequency 1. Press to move the arrow to the parameter (Param) selection, then rotate the front-panel knob to select the lowpass filter corner frequency parameter (Freq Lo). 2. Press to move the arrow to the Value selection, then rotate the front-panel knob to select the desired corner frequency. 3.
Dolby® CP650 Installation Manual B-Chain Alignment Setting Output Delay The delay settings must be adjusted to compensate for different physical mounting positions of the speaker drivers. 1. Press to move the arrow to the parameter (Param) selection, then rotate the front-panel knob to select the lowfrequency output delay (Delay Lo). Crossover Config: Channel: Left >Param : Delay Lo Value : 0.0 mSec 2. Press Crossover Config: Channel: Left Param : Delay Lo >Value : 0.0 mSec 3.
Dolby® CP650 Installation Manual 4.7 B-Chain Alignment Room Equalization Room equalization is performed using the real-time analyzer (RTA) circuit built into the CP650 along with an oscilloscope for RTA display. The adjustments for all output channels involves two steps: the coarse, or bulk, adjustment, using bass and treble controls, and the fine adjustment, using a 27-band equalizer.
Dolby® CP650 Installation Manual B-Chain Alignment 4. While observing the RTA display on the oscilloscope, rotate the front-panel knob until the mid-frequency bands are at the same approximate level as the low-frequency bands. 5. Press to move the arrow to the Channel selection, and repeat the procedure for the remaining channels. 6. When all of the crossover level adjustments have been set, press OK to save your settings. 4.7.
Dolby® CP650 Installation Manual B-Chain Alignment screen channels. The corner frequency is fixed at 2 kHz, and there is a 3 dB level shift to the standard response curve displayed on the scope. Caution: Do not press the button. All settings would be lost! 5. Press OK to save all bulk EQ settings. 4.7.3 Saving Changes..... ... Setting Fine EQ 1. Press once to move to the B-Chain EQ menu. The software enters this menu with Center channel selected.
Dolby® CP650 Installation Manual B-Chain Alignment Shortcuts: • • Spin the front-panel knob counterclockwise (more than 100 steps) to set the equalization to flat (no boost, no cut). Spin the front-panel knob clockwise (more than 100 steps) to activate the EQ Assist feature. See Section 4.7.4. = Flat TM 3. When the desired response for this channel has been achieved, press OK to save your settings. = EQ Assist Saving Changes..... ... 4.
Dolby® CP650 Installation Manual 4.7.5 B-Chain Alignment Setting Subwoofer Channel EQ Equalization facilities for the Subwoofer channel are different than for the other channels. This process is designed to correct the principal room resonance in the operating range of the subwoofer. The subwoofer equalizer is a cut-only filter, with adjustable frequency (25 to 125 Hz), Q (center width, selectable between four values), and amount of cut (0 to 12 dB).
Dolby® CP650 Installation Manual 4.7.6 B-Chain Alignment Final Output-Level Calibration Once room equalization is complete, the sound pressure level in the theatre can be set accurately. Main Channels 1. If a microphone multiplexer is being used, select Mic 1. 2. Press to display the Output Levels screen, then repeat the output level setting steps given in Section 4.5.1, starting with step 2. Make the following settings: L, C, R = 85 dB, Ls and Rs = 82 dB (or Ls, Bsl, Bsr, Rs = 82 dB).
Dolby® CP650 Installation Manual B-Chain Alignment Optical Subwoofer Bandwidth This menu item sets the upper frequency limit of the Subwoofer channel to either 50 or 100 Hz. The recommended setting depends on the type of screen speakers in your cinema. If you have direct radiator type screen speakers, set the bandwidth to 50 Hz. If you have older, horn-loaded screen speakers (such as Altec A-4s), set the bandwidth to 100 Hz. 1.
Dolby® CP650 Installation Manual 4.8 B-Chain Alignment Final Sound Check—Rotating Pink Noise 1. Slide DIP switch 6 down to the normal position. The CP650 12345678 will switch to normal operation with the user menu choices available. 2. Press multiple times to move the display to the Rotating Noise screen. Rotating Noise Press OK to Start or Stop 3. Press OK to start the pink noise.
Dolby® CP650 Installation Manual Chapter 5 A-Chain Alignment Note: CP650DC models for digital cinemas do not incorporate 35 mm film sound support. Skip this chapter if you are installing any of these models. The A-chain alignment involves adjustments made to the projector soundhead optics, solar cell, and optical preamplifier board.
Dolby® CP650 Installation Manual 5.1 A-Chain Alignment Projector Checkup Clean the optical surfaces with a cotton swab moistened with glass cleaner. Inspect the film guides for evidence of cuts, cracks, surface defects, or any foreign materials that could impair smooth film guiding. 5.2 Projector Analog Optical Alignment If a stereo solar cell is already installed on projector 1, inspect the surface of the cell for cracks, chipping, or other damage.
Dolby® CP650 Installation Manual A-Chain Alignment Place a white card at the front of the lens close to the position of the film soundtrack. Adjust the position of the exciter lamp until the image of the filament is centered both vertically and horizontally. If you have difficulty obtaining an image of the filament, place a piece of tissue paper over the lens to assist in seeing the image.
Dolby® CP650 Installation Manual 5.3 A-Chain Alignment Dolby Level Set 12345678 Lt Rt SIGNAL PRESENT Video Clamp RTA1 RTA2 Lt Rt Mic Bypass 1. Connect the oscilloscope to the Lt and Rt test points. Ch 1 Ch 2 GND Oscilloscope 2. Slide DIP switch 6 to the up position. This switches the CP650 into 12345678 Setup mode. 5.3.1 Automatic 1. Press multiple times to move the display to Automatic Optical Level Adjust Projector 1. Automatic Optical Level Adjust Projector 1 Press OK When Ready. 2.
Dolby® CP650 Installation Manual 5.3.2 A-Chain Alignment Manual 1. To set Dolby level manually, press OK to return to the Automatic Optical Level Adjust screen, then press twice to move to Manual Optical Level Adjust for projector 1. Manual Optical Level Adjust Projector 1 Press OK When Ready. 2. Press OK to begin manual adjustment. 3. The number displayed on the bottom line represents the level setting for the Left channel.
Dolby® CP650 Installation Manual 5.4 A-Chain Alignment Film-Path Alignment Check 12345678 Lt Rt 1. Connect the oscilloscope to the Lt and Rt test points. Video Clamp RTA1 RTA2 SIGNAL PRESENT Lt Rt Mic Bypass Ch 1 2. Thread and play a SMPTE buzz track test film. This film Ch 2 GND has modulation just beyond the normally scanned areas of the optical soundtracks. The objective of this test is to ensure that the slit illuminates only the soundtracks. Oscilloscope 3.
Dolby® CP650 Installation Manual 5.6 A-Chain Alignment Cell Wiring Check 1. Verify that the outputs of the right and left solar cells are properly connected by placing a white card over the right soundtrack (nearer the outside of the projector) and verifying that the level of the Right channel drops, as indicated by the Rt Signal Present LED on the CP650 setup panel. 2. If the film path, optics, or LED/exciter lamp were adjusted, repeat the previous film- path alignment and cell alignment steps.
Dolby® CP650 Installation Manual 5.8 A-Chain Alignment Focus Check 12345678 Lt Rt Video Clamp RTA1 RTA2 1. Connect the scope to RTA1 and RTA2 test points. SIGNAL PRESENT Lt Rt Mic Bypass Ch 1 Ch 2 GND Oscilloscope 2. Press to move to the Optical Focus adjust menu. The scope RTA will display the frequency response of the Left channel optical preamp output for projector 1. Pressing selects the projector or channel. The front-panel knob selects P1/P2 or Left/Right channel to view.
Dolby® CP650 Installation Manual 5.9 A-Chain Alignment Optical HF Equalization (Slit-Loss EQ) This step adjusts the high-frequency response of the optical preamplifier circuit. The CP650 provides both automatic and manual facilities for optical, or slit-loss, highfrequency equalization. The Auto menu appears first. 5.9.1 Auto Slit-Loss EQ 1. Play the Cat. No. 69P pink noise test film. Auto Slit-loss EQ Projector P1 2. Press to move the CP650 menu to Auto Slit-loss EQ for projector 1.
Dolby® CP650 Installation Manual A-Chain Alignment 5. When the desired response has been achieved, press OK to save the settings. 6. After saving the settings, the display returns the Manual Slit-loss EQ Projector 1 menu. If a second projector is installed, press to move to the Manual Slit-loss EQ Projector 2 menu, and repeat the procedure.
Dolby® CP650 Installation Manual Chapter 6 Digital Soundheads Note: CP650DC models for digital cinemas do not incorporate 35 mm film sound support. Skip this chapter if you are installing any of these models. 6.1 Mechanical Alignment Mechanical alignment of the digital soundhead consists of confirming that the film path through the digital soundhead is aligned with the path through the projector. For built-in reverse-scan (basement) digital soundheads, see the manufacturer’s instructions. 1.
Dolby® CP650 Installation Manual 6.2 Digital Soundheads Adjustment with Oscilloscope Dolby® Digital soundheads are optically aligned at the factory and should not require adjustment unless the CCD circuit board has been disturbed. The following test setup will enable adjustment of focus and confirmation or adjustment of light level and optical alignment. 1. Make sure power to the digital soundhead is provided. Power to the CP650 should also be on. 2. Open the CP650 front-panel setup access door. 3.
Dolby® CP650 Installation Manual Digital Soundheads Figure 6-2 Digital Video Oscilloscope Image—Focus Adjustment 6.4 LED Brightness Confirmation and Adjustment The optimum peak video signal voltage (unobstructed light through the perf hole) is 4 V, measured from the 0 V reference baseline to the upper trace. Figure 6-3 Measuring Peak Video Signal Voltage 6.4.1 Cat. No. 702 Reader The Cat. No.
Dolby® CP650 Installation Manual Digital Soundheads The video level indicator colors and video levels are: Red Signal too low <1.5 V Green Optimum signal 1.5–4.5 V Orange Signal too high >4.5 V With proper LED light output, the indicator is green. To adjust the light level for the optimum signal range, run film containing a Dolby Digital soundtrack and turn the pot clockwise until the indicator turns orange, then turn the indicator counterclockwise until it turns green. 6.4.2 Cat. No.
Dolby® CP650 Installation Manual Chapter 7 Final Adjustments Note: If you are installing CP650DC models for digital cinema, skip to Section 7.2. 7.1 Setting Bypass Level With a Cat. No. 791 Crossover Card installed, two jumpers located on the Cat. No. 772B card must be set to their enabled position. This enables the Cat. No. 791 card bypass output and sends a full-range signal to the hearing-impaired output. CP650s shipped with a Cat. No. 791 card have the correct jumper settings. See Figure 4-4.
Dolby® CP650 Installation Manual Final Adjustments 8. Verify that the audio level in the auditorium sounds the same in both Normal and Bypass modes by using the OK button to toggle back and forth between Normal and Bypass. 9. When finished, leave the CP650 in normal operating mode (power button not glowing red). 7.2 Optical Surround Level Trim This adjustment applies when using any Dolby® Pro Logic® format, from either film or digital sources.
Dolby® CP650 Installation Manual Final Adjustments 9. Press OK to save the setting. 10. If a previous CP650 setup has been performed, restore the original optical surround delay setting noted in the step 3 above. 7.3 Setting Optical Surround Delay Note: If you are installing a CP650DC model (for digital cinemas), formats that require Dolby Pro Logic decoding (for example, 60, 61, 75, 76, or 80) require this setting.
Dolby® CP650 Installation Manual Final Adjustments If you hear discernible dialogue from the surround speakers, the delay time was probably set too long. If you hear an objectionable amount of dialogue from the surround speakers that persists regardless of the delay time setting, there is probably a severe gain or azimuth error in the system. Recheck both the Dolby level and the A-chain alignment of the optical system.
Dolby® CP650 Installation Manual Final Adjustments Table 7-1 Surround Delays Based on Theatre Dimensions (in Feet) Length (feet) Width (feet) 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 20 10 10 20 30 30 40 50 50 60 70 70 80 90 90 100 110 110 120 130 30 10 10 20 20 30 30 40 50 50 60 70 80 80 90 100 100 110 120 120 40 10 10 20 20 30 30 40 40 50 60 60 70 80 80 90 100 100 110 120 50 10 10 20 20 30 30 40 40 50 50 60 70 70 80 90 90 100 110 110 60 10 10 20 20 30 30 40 40 50 50 50
Dolby® CP650 Installation Manual Final Adjustments Static 1. Thread a length of Cat. No. 1010 digital soundhead alignment test film such that the bullet frame (perf 106) is located in the picture gate, and perf number 26 is located at the analog soundhead. 2. With the film threaded through the digital soundhead, read the number of perforations present in the light path of the digital soundhead. Enter this number by pressing Dolby Digital Reader Delay menu.
Dolby® CP650 Installation Manual 7.6 Final Adjustments Dolby Digital Video Level Check (Not active on CP650DC models) On CP650s running software v.2.2 and later, the digital film reader output levels can be checked. Note: Your CP650 must be capable of decoding Dolby Digital film soundtracks to use this feature. If your cinema processor is a Model CP650SR, you must first install a Cat. No. 773 Dolby Digital Film Decoder Circuit Board. The UD/650 Upgrade Kit is available for this purpose. 1.
Dolby® CP650 Installation Manual 7.8 Final Adjustments Mono Level Trim (Not used on CP650DC models) 1. Press to move to the Mono Level Trim menu. Mono Level Trim > xx 2. Thread and play a mono film familiar to you. 3. While the film is running, adjust the front-panel knob to the desired loudness level. Note: During mono level setting, the main fader level is fixed at 7.0. This makes special front-panel fader settings for mono films unnecessary. 4. Press OK to save the desired level setting. 7.
Dolby® CP650 Installation Manual Final Adjustments 3. Press to move the selection to Delay, then rotate the front-panel knob to the desired delay setting for this button (0–170 mSec). Button Presets Button 01 Fader: 6.5 >Delay: 0—170 mSec 4. Press OK to save the presets for this button. 5. Press to return to Button and rotate the front-panel knob to select the next frontpanel button you wish to preset.
Dolby® CP650 Installation Manual Final Adjustments 2. Press to choose between setting PCM Auto Mute (Disabled or Enabled) and PCM Dolby Pro Logic Decode (L/R Stereo or Pro Logic). Note: Be aware that enabling PCM auto mute will not allow the CP650 to play back any PCM content. 3. Rotate the front-panel knob to make the selections. 4. Press OK to save the settings. 7.13 Reversion Mode (Not active on CP650DC models) This function is used mainly by film labs.
Dolby® CP650 Installation Manual Final Adjustments 7.16 Running Auditorium Assist The Auditorium AssistTM feature, included in CP650 operating system software v.2.0 and later, provides an indication of the stability and characteristics of your theatre’s speakers, crossovers, amplifiers, and auditorium acoustics. The first time it is used, the frequency response and sound level of each speaker are checked and stored in the CP650 memory.
Dolby® CP650 Installation Manual 7.16.1 Final Adjustments Establish Reference Measurements 1. To move the display to the Auditorium Assist menu, press multiple times, or press and hold the button while rotating the front-panel knob. A No Reference display means there are no reference measurements stored in CP650 memory.
Dolby® CP650 Installation Manual 7.16.2 Final Adjustments Auditorium Sound Check The Auditorium Assist sound-check function can be performed at any time. 1. To move the display to the Auditorium Assist menu, press multiple times, or press and hold the button while rotating the front-panel knob. 2. Use to choose Check Auditorium, then press OK to begin the process. Auditorium Assist >Check Auditorium .
Dolby® CP650 Installation Manual Final Adjustments Level and Frequency Response A failure is indicated if a new frequency response measurement of any channel (L, C, R, Ls, Rs, Bsl, or Bsr) differs from the saved reference measurements by more than ±3 dB. The measurement is taken in the region between 200 Hz and 5 kHz. A failure is indicated in the Subwoofer channel if the frequency response deviates by more than ±5 dB from the reference reading, in the region between 60 and 100 Hz.
Dolby® CP650 Installation Manual Final Adjustments Unity Gain (available with Cat. No. 778 digital I/O card installed) Unity Gain allows a digital signal to pass through the CP650 while maintaining its original level. In this condition, the CP650 will pass digital signal inputs up to full scale on all channels without clipping, provided that the graphic EQ, subwoofer EQ, treble bulk EQ, bass bulk EQ, optical surround level trim, subwoofer level trim, and fader provide no boost in level. (When the Cat. No.
Dolby® CP650 Installation Manual Final Adjustments 7.17 Dialogue Normalization This feature is normally set to Disabled, and affects Dolby Digital bitstreams from consumer devices such as DVD and terrestrial/satellite broadcast sources. With dialogue normalization enabled, the overall playback level is set in relation to the Center channel dialogue information. This level is determined and set during the encoding process, and is carried by metadata embedded in the Dolby Digital bitstream. 1.
Dolby® CP650 Installation Manual Final Adjustments 7.19 Clock Set The clock is used only to time stamp event log messages to aid in troubleshooting. The CP650 will operate normally without setting the clock. 1. Press , or press and hold the button while rotating the front-panel knob, to move to the Clock Set menu. Clock Set >Hour:xx Min: xx 2. Press to choose between setting the hour and minutes, then rotate the front-panel knob to set the times. 3. Press OK to save your settings. 7.20 Date Set 1.
Dolby® CP650 Installation Manual Final Adjustments 7.22 Auto Dolby Digital Function (Not active on CP650DC models) One of the items found in the user’s menus (DIP switch 6 set to down) is Auto Dolby Digital Enable/Disable. Dolby Digital film soundtracks can be automatically sensed to enable format 10 (Dolby Digital). The sensing can be thought of as source sensing. More specifically, Auto Dolby Digital can only be sensed from an analog film source format.
Dolby® CP650 Installation Manual Chapter 8 Accessories This chapter covers installation of the Cat. No. 779 Remote Control Unit and the Cat. No. 771 Remote Fader. Before installing remote units, read these general points: • • • No more than three remote units (in any combination) may be used with a CP650. A customer-supplied auditorium fader can be connected in addition to the remotes, but it cannot be operated at the same time as any remote.
Dolby® CP650 Installation Manual 8.1 Accessories Cat. No. 779 Remote Control Unit Installation Fader Level Display Displays fader setting. Ranges from 0.0 to 10. Projector Signal Indicators P1 and P2 show which projector’s output is being processed by the CP650. (Not active on CP650DC models) Format Buttons Select the playback format desired. Formats are assigned to these buttons during setup. Mute Button Fades the signal to all channels up or down without disturbing the current main fader setting.
Dolby® CP650 Installation Manual Accessories The wire to the CP650 must run from the connection point on the circuit board without touching any circuit-board components. • • • If the remote control will be mounted in a console or on a wall, we recommend placing the hole in the bottom of the housing. If the remote control will stand alone, we recommend placing the hole in the side of the housing.
Dolby® CP650 Installation Manual 8.1.4 Accessories Set the Address Switch For the CP650 to communicate with all the remote units, each unit must be set to a unique address number using switch SW1. Interface connector J1 SW1 SWITCH SIDE VIEW Set switch SW1 to any setting except 0 Figure 8-4 SW1 Address Switch Location Use a small flat-blade screwdriver to set switch SW1. Do not set the arrow to the 0 position, because that setting generates an error message and disables the unit.
Dolby® CP650 Installation Manual Connect to the CP650 1. Connect the interface wires to the six-way connector shown in the figure below. If you cannot locate the connector, you can order one (Part No. 70206) from Dolby Laboratories. Note: All remote units attach to the same terminals on the connector. Do not connect wires from any Dolby® remote unit to terminals 4, 5, or 6. 2. Plug the connector into the Remotes and Aud. Fader input on the CP650 rear panel. CP650 rear panel REMOTES AND AUD.
Dolby® CP650 Installation Manual 8.2 Accessories Cat. No. 771 Remote Fader Installation Figure 8-6 Cat. No. 771 Remote Fader The Cat. No. 771 Remote Fader can be mounted on a wall or in a console, or it can stand alone. To install the remote fader: 1. Remove the four screws from the corners of the front panel. Store the screws nearby and remove the rear housing. Caution: Do not touch circuit-board components. Static electricity can damage components. 2.
Dolby® CP650 Installation Manual Chapter 9 Maintenance and Troubleshooting If you are installing a CP650DC model, skip to Section 9.3. 9.1 Print Cleanliness As with any soundtrack, keeping the film print clean will give the best performance. The Dolby® Digital print format has robust error correction information encoded along with the audio data, and the CP650 uses a powerful digital error correction technique, allowing the data to be read perfectly even if scratches and dirt are present.
Dolby® CP650 Installation Manual Maintenance and Troubleshooting The tension arm rollers on earlier Dolby Digital film readers Cat. Nos. 701, 700, and 699 may begin to show wear and need replacement. A replacement rollers kit is available for upgrading your unit. 9.3 CP650 Troubleshooting The following sections cover power supply information, the event log, and troubleshooting tips. 9.3.1 Power Supply Voltage Ranges Six test points are located on the front subpanel for measuring power supply voltages.
Dolby® CP650 Installation Manual 9.3.2 Maintenance and Troubleshooting Exploded View and Board Locations Cat. No. 790 Dolby Digital Surround EX Decoder / Digital Aux. Input Card Cat. No. 773 Dolby Digital Decoder Cat. No. 791 Digital Crossover Card (for use with Cat. No. 790 only) Bypass Mains Voltage Selector Switch 115/230 VAC - or Cat. No. 778 Dolby Digital Surround EX Decoder / Digital I/O Card (Not present on CP650DC models) Cat. No.
Dolby® CP650 Installation Manual 9.3.3 Maintenance and Troubleshooting The Event Log The event log stores entries on the operation of the CP650. It can be useful in troubleshooting or tracking subtle system failures. Also, Auditorium AssistTM fail parameters are stored in the event log. (See Section 7.16.3.) Normally, a single log entry occurs every time the CP650 powers on. When viewing the event log display, the newest entries appear at the top; turn the front-panel knob to scroll through the list. 1.
Dolby® CP650 Troubleshooting Chart Symptom Maintenance and Troubleshooting Probable Cause Recommended Action NO SOUND AT ALL See if AC mains panel circuit breaker feeding the CP650 is tripped. Verify that all power connectors are fully inserted into their sockets. No sound, front panel dark, power button not glowing. No power to either main or bypass systems. Defective analog reader LED, exciter lamp, or LED/lamp power supply. No sound, and switching to Bypass doesn’t restore sound.
Dolby® CP650 Troubleshooting Chart Symptom Maintenance and Troubleshooting Probable Cause Recommended Action NO SOUND IN SOME FORMATS No analog film sound (formats 01, 04, or 05). Front panel normal, Dolby Digital sound OK, and nonsync OK. The analog LED or exciter lamp or power supply may have failed or the wrong projector may be selected. Solar cell connections may be loose or damaged.
Dolby® CP650 Troubleshooting Chart Symptom Maintenance and Troubleshooting Probable Cause Recommended Action FADER PROBLEMS Front-panel fader knob has no effect. External analog remote fader pot selected. to show Select front-panel (local) fader by pressing the Fader Setting menu, then turn the front-panel knob to display Local. Press OK. This will restore control to the main front-panel fader and any digital remotes that are connected.
Dolby® CP650 Troubleshooting Chart Symptom Maintenance and Troubleshooting Probable Cause Recommended Action RUMBLES, WHISTLES, HUM IN SOUND Rumble in sound, regardless of format. Audio grounding scheme may need changing. Call service engineer. Whistles in sound. Audio grounding scheme may need changing. Call service engineer. Malfunctioning exciter lamp or lamp power supply. Cover the solar cells with a business card or other opaque object.
Dolby® CP650 Troubleshooting Chart Symptom Maintenance and Troubleshooting Probable Cause Recommended Action TROUBLE IN ONE OR MORE CHANNELS One channel fails. Defective power amplifier, external crossover, or wiring for that channel. Power amplifier input level setting turned down. Malfunctioning board in CP650. Defective power amplifier for that channel. Defective speaker for that channel. (The booth sound is OK but sound in the auditorium is bad).
Dolby® CP650 Troubleshooting Chart Symptom The sound from two or more channels is distorted and you can hear the distortion through the booth monitor at normal listening level. Maintenance and Troubleshooting Probable Cause Malfunctioning two-channel power amplifier. Recommended Action If two distorted channels are served by the same twochannel amplifier, the problem may be in the amplifier. See the manufacturer's instructions. Call service engineer.
Dolby® CP650 Troubleshooting Chart Symptom Maintenance and Troubleshooting Probable Cause The nonsync source is introducing distortion. There is distortion when you play nonsync sound, but sound from the film is not distorted. Excessive output level from nonsync source. Defective Cat. No. 772B board. Nonsync sound is heard in other formats. The nonsync source output level is set far too high or there is a balanced/unbalanced wiring problem. Malfunctioning power amplifier.
Dolby® CP650 Troubleshooting Chart Symptom Maintenance and Troubleshooting Probable Cause Recommended Action CHANGEOVER AND CONTROL TROUBLES Projector changeover command does not change the sound to the output of the selected projector and the front-panel indicators P1 or P2 do not light according to the projector selected. With an automation system connected to the CP650: The CP650 freezes into one format and does not accept any other selected format when you press the front-panel buttons.
Dolby® CP650 Troubleshooting Chart Symptom You can hear pops or thumps during projector changeover. Maintenance and Troubleshooting Probable Cause If the projector changeover relay power is DC, a diode should be soldered across the winding of the relay to prevent switching noise from leaking into the audio wiring. This diode may be missing or defective. Recommended Action If possible, check that the diode is installed across the relay winding.
Dolby® CP650 Power Supply Wiring Maintenance and Troubleshooting TO CAT.NO.775 J14 BACKPLANE POWER CONNECTOR FRONT PANEL BUTTON BYPASS P1 P2 S1 GRN 1 BRN CAT.NO.
Dolby® CP650 Power Supply Wiring Maintenance and Troubleshooting TO CAT.NO.775 J14 BACKPLANE POWER CONNECTOR FRONT PANEL BUTTON P2 S1 BYPASS P1 GRN 1 BRN CAT.NO.795 SNUBBER / TERMINAL BOARD ON GRAY 2 PINK 3 AC MAINS FUSE FILTER T 5A L 250 VAC N 110/250 VAC D 50-60 Hz 6A 5 LT BLU 6 E 8 VARISTOR IPD POWER SUPPLY +5 V +/-15 V 100 W P2 E BYPASS FUSE INTERNAL FUSE BRN 1 110 VAC: T 200 mA L 220 VAC: T 100 mA L BRN BLU 3 P1 L 1 3.
Dolby® CP650 Power Supply Wiring Maintenance and Troubleshooting TO CAT.NO.775 J14 BACKPLANE POWER CONNECTOR P2 P1 GRN 1 7 BYPASS_GND 9 -14VB 18 +5VB 8 +14VB MAINS INLET / FILTER MODULE GRAY 2 PINK 3 250 VAC FUSE L MAINS POWER 100-240VAC 50/60 Hz 120W ORN 4 FROM CAT.NO.792 J2 BYPASS REGULATOR A FILTER T 6.
Dolby® Digital Readers Exploded View Maintenance and Troubleshooting DOWEL 1/8” DIA X 1/2” LG DPN 6501570 2-PL DOWEL 1/8” DIA X 3/4” LG DPN 6501580 (NOT SHOWN) HOUSING ASSY CAT702Z DPN 8304550 SCREW M4 X 6 PAN POZI BLK DPN 6002690 6-PL SPRING OMEGA TOP DPN 6701090 SCREW M4 X 25 CAP SKT BLK DPN 6002280 SPRING OMEGA BOTTOM DPN 6701110 (NOT SHOWN) FLYWHEEL II DPN 6701570 (SECTION SHOWN) SCREW M3 X 6 CAP SKT BLK DPN 6002300 2-PL SCREW M4 X 14 SET SKT CUP SST DPN 6002390 2-PL PAD ARM TOP DPN 6701070 PAD A
Dolby® Digital Readers Exploded View Maintenance and Troubleshooting SPRING ARM DPN 6701740 CABLE CLAMP DPN 7901200 SCREW M3 X 6 BTN SKT BLK DPN 6001800, 2-PL WASHER M3 FLAT FENDER SST DPN 6102140, 2-PL WASHER 1/4" FLAT SS DPN 6102060, 2-PL FS SPRING K=1.6 LB/IN 1-3/8" LONG DPN 6501550 BRACKET DASHPOT DPN 6701150 CABLE ASSY 10WAY DPN 8304540 LIGHT PIPE EXTRUSION DPN 6701890 SCREW M4 X 12 CAP SKT BLK DPN 6002290 2-PL DASHPOT 1.
Dolby® Digital Readers Exploded View Maintenance and Troubleshooting CAT. NO. 534 RV1 LED CURRENT ADJUSTMENT POT HOLE PLUG 3/8" DPN 65199 2-PL CAT. NO. 701 ONLY SCREW M4 X 6 PAN POZI BLK DPN 60269 6-PL DOWEL 1/8” DIA X 1/2” LG DPN 65157 2-PL HOUSING ASSY DPN 83319 DOWEL 1/8” DIA X 3/4” LG DPN 65158 (NOT SHOWN) HOLE PLUG 5/16" DPN 65198 CAT. NO.
Dolby® Digital Readers Exploded View Maintenance and Troubleshooting SPRING ARM DPN 67174 SPRING K=1.6 LB/IN 1-3/8" LONG DPN 65155 WASHER M3 FLAT DPN 61214, 2-PL BRACKET CLAMP DPN 67198 LIGHT PIPE EXTRUSION DPN 67189 SCREW M3 X 6 BTN SKT BLK DPN 60180, 2-PL SCREW M4 X 12 CAP SKT BLK DPN 60229 2-PL BRACKET DASHPOT DPN 67115 WASHER 1/4" FLAT DPN 61206, 2-PL FS DASHPOT 1.5" CYLINDER FACTORY ADJUSTED USER REPLACEABLE DPN 83159 (INCLUDES INSTRUCTIONS DPN 91938) BRACKET HEAT GLASS CAT700 DPN 67172 CAT.
Dolby® CP650 Installation Manual Appendix A Software Operations A.1 Display Information About This CP650 Unit This user’s menu item provides information about the software and hardware installed in your CP650. 1. Confirm that DIP switch 6 is set to the normal (down) position 12345678 to enable the user’s menu choices. 2. Press multiple times, or press and hold the button while rotating the front-panel knob, to move to the About this CP650 screen. This menu is made up of four menu screens. 3.
Dolby® CP650 Installation Manual A.2 Software Operations Updating CP650 Software 1. Connect the PC to the CP650 using a serial cable to the CP650 serial data connector on the front setup panel (or on the rear panel). 12345678 SERIAL DATA Lt Rt Video Clamp RTA1 RTA2 MIC MUX SIGNAL PRESENT Lt Rt L C R Ls Rs Sw Mic Bypass 2. Run the CP650 setup software on the PC. 3. From the Action menu, choose Connect, or click on the connect icon. 4. If prompted, choose to retrieve cinema processor settings.
Dolby® CP650 Installation Manual Software Operations 6. From the File menu, choose Save or click on the save icon. 7. Save the retrieved settings to disk. The file name should end with the .dby extension. 8. Unplug the serial cable from the source CP650 and plug it into the destination CP650. Note: If you have closed the CP650 setup program or opened another settings parameter file (.dby), then before continuing, you must select Open from the File menu and open the file that was saved in step 6. 9.
Dolby® CP650 Installation Manual Appendix B Rear-Panel Connectors B.1 Output Connectors Main Audio Output Connector The Main Audio Output of the CP650 is sourced from balanced output circuits. The connector type and pin configuration conform to the THX® standard. With a Cat. No. 790 Dolby® Digital Surround EXTM decoder board installed (standard model CP650), the Left Surround and Right Surround outputs on this connector are disabled.
Dolby® CP650 Installation Manual Rear-Panel Connectors Option Card I/O Connector The pinout of this connector is determined by the type of option board installed in the connectors of the Cat. No. 774A system controller board. In CP650DC models, the Cat. No. 790 Dolby Digital Surround EX Decoder/Digital Input Card is shipped in this location. Output signals for the surround channels appear on this connector. The digital input pins can be connected to the bitstream audio output of the digital cinema server.
Dolby® CP650 Installation Manual Rear-Panel Connectors The optional Cat. No. 778 card has five pairs of AES inputs, the first of which provides a single digital bitstream input (Dolby Digital or PCM), or up to ten channels of digital PCM audio input. The card provides ten channels of digital audio outputs, while supporting the Dolby Digital Surround EX audio format.
Dolby® CP650 Installation Manual B.2 Rear-Panel Connectors Input Connectors Dolby Digital Reader Connectors—Reader 1 and Reader 2 (Not Present on CP650DC Models) These connectors are used for connecting up to two Dolby Digital film soundtrack readers to the CP650 or CP650D. These connections are inactive on Model CP650SR. The pinout and the signals on these connectors are identical to the Dolby DA20 Digital Film Sound Processor and CP500D Digital Cinema Processor.
Dolby® CP650 Installation Manual Rear-Panel Connectors Motor Start Connector (Not Present on CP650DC Models) The Motor Start connector is used to interconnect the changeover control lines of the CP650 with the theatre control system. If the CP650 is to be used in a platter operation (single projector), a jumper must be installed on this connector between pins 1 and 5. This configuration is identical to the one used on the Dolby CP500.
Dolby® CP650 Installation Manual Rear-Panel Connectors Mic Mux Connector on Front Setup Control Panel An EQ microphone or mic multiplexer can be connected at this location without the need for access to the CP650 rear panel. Pins 1, 2, and 5 are wired in parallel with the rear-panel microphone input XLR connector. If you wish to use a connector already wired for use with a Dolby CP500, add a jumper between pins 5 and 6.
Dolby® CP650 Installation Manual Rear-Panel Connectors Six-Channel Analog Audio Input Connector This input is an unbalanced analog audio input. The nominal reference level is approximately 300 mV. There are no input level trim controls within the CP650 for this input.
Dolby® CP650 Installation Manual Rear-Panel Connectors B.3 I/O Connectors Automation I/O Connector This connector is a 25-pin female D-connector, wired to closely match the configuration of the Dolby Model CP65.
Dolby® CP650 Installation Manual Rear-Panel Connectors Automation I/O Connector—Pins Used for Noise Gating The table below lists the pin numbers used for the noise gating function. See Section 7.15 for a description of this setup menu item. Grounding the listed pin will send pink noise to the listed channel when the setup menu is set to Noise Gating.
Dolby® CP650 Installation Manual Appendix C Format Descriptions Each format supported by the CP650 is described in Section C2. More specifically, each listing describes the audio processing applied by each format for any Dolby® cinema processor. Table C-1 describes the channel designations. C.
Dolby® CP650 Installation Manual C.2 Format Descriptions Format Definitions The formats supported by the CP650 are described below. If a format name is too long for display on the CP650 front panel (limited to 19 characters), a shorter name is given. Format 01 Academy Mono Optical Short name: Mono Audio Description—Optical mono audio comes in on either projector’s optical input, has no noise reduction applied, and is intended to produce audio on the Center channel only.
Dolby® CP650 Installation Manual Format Descriptions Format 10 Dolby Digital Film (Cat. No. 773 required) Short name: Dolby Digital Audio Description—The input is from the Dolby Digital reader, which provides the signal to the Dolby Digital decoder and creates six discrete channels (L, C, R, Ls, Rs, SW). The optical soundtrack is processed as in format 05 at all times, to enable rapid reversions to analog film sound when needed. On a reversion event, the following actions take place: 1.
Dolby® CP650 Installation Manual Format Descriptions Format 20 35 mm Magnetic, L, C, R 3-Channel Short name: 3-Channel Mag Audio Description—This magnetic audio format has four discrete channels (L, C, R, S, though S is unused) and is input through the six-channel analog input. The magnetic preamplifier units (MPUs) are external, and the Academy mag filters (if required) are also external to the CP650. There is no derived subwoofer.
Dolby® CP650 Installation Manual Format Descriptions Format 64 Public Address Center Channel Short name: Public Address, C Audio Description—A single channel is input through the microphone input connector. The audio output is sent to Center only. Format 65 Public Address Surround Channels Short name: Public Address LsRs Audio Description—A single channel is input through the microphone input connector. The audio output is sent to Ls and Rs only.
Dolby® CP650 Installation Manual Format Descriptions Format 74 Nonsync 1 Pro Logic No Subwoofer Short name: NS1 Pro Logic No SW Audio Description—This external audio format has two discrete input channels (L, R) and is input through the Nonsync In 1 connectors. The audio is processed with Dolby Pro Logic decoding and output on channels L, C, R, with a mono signal to Ls and Rs. There is no derived subwoofer.
Dolby® CP650 Installation Manual Format Descriptions Format 81 (Cat. No. 790 required) Bitstream Dolby Digital Surround EX Short name: Fmt 80 w/Surr. EX Audio Description—The input signal is a digital bitstream into the Option Card I/O input. The signal is Dolby Digital (consumer) decoded, and the resultant L, C, R, and SW signals are sent to the output.
Dolby® CP650 Installation Manual Format Descriptions Format 87 (Cat. No. 790 or earlier Cat. No. 794 required) Analog 6-Channel with Surround EX Short name: Fmt 11 w/Surr. EX Audio Description—This analog audio format is a combination of formats 11 and 13, and can be used when the analog output of an external digital processor is connected. Signals of six discrete channels (L, C, R, Ls, Rs, SW) are connected to the six-channel analog input connector.
Dolby® CP650 Installation Manual Format Descriptions Format 90 (Cat. No. 778 or 790 required) 7-Channel PCM Audio Description—This format is used to input seven discrete channels (L/R, C/LFE, Ls/Rs, and Bs) as would exist in a preencoded Dolby Digital Surround EX mix. Processing is identical to format 88, with the following exceptions: 1. The Back Surround (Bs) input (channel 1 of AES input 4) is copied to the Bsl and Bsr outputs. 2. No Dolby Digital Surround EX decoding is performed.
Dolby® CP650 Installation Manual Format Definitions Table C-2 Format Characteristics Chart Format Number 01 Format Name Required Option 2 board Academy Mono Optical Input Optical in Decode Lt + Rt summed to center with Academy filter Noise Reduction Subwoofer Subwoofer Lowpass Sub Output Level Referenced to Center Downward Expander None Surrounds None User defined: 50/100 Hz User defined: 50/100 Hz 120 Hz, defined by recording Dolby A-type Optical Optical in Dolby Pro Logic derived L, C, R
Dolby® CP650 Installation Manual Format Number Format Name 80 Bitstream Master Digital Input 81 Bitstream Dolby Digital Surround EX 85 5-Channel Screen 86 5-Channel Screen + EX 87 6-Channel with Surround EX 88 6-Channel PCM 89 6-Channel PCM + Surround EX 90 7-Channel PCM Required Option 2 Board Input Cat. No. 778 AES1 Cat. No. 790 Cat. No. 794 S/PDIF AES3, S/PDIF Cat. No. 778 AES1 Cat. No. 790 Cat. No. 794 Cat. No. 778 Cat. Nos. 790 and 791 Cat. No. 778 Cat. Nos. 790 and 791 Cat.
Dolby® CP650 Installation Manual Appendix D External Control The CP650 can be controlled via the Ethernet port, by devices connected to the RS-232 serial data connector, or to the rear-panel Remotes and Auditorium Fader connector. For control via the Ethernet port, see the configuration settings in Section 7.18. D.1 Control via Serial Port This appendix is for use by customers who are highly qualified to modify hardware and write software.
Dolby® CP650 Installation Manual External Control Table D-1 Remote Commands Key Range of Values exit 0 .. 1 fader_level 0 .. 100 Corresponding to fader values 0.0 ... 10.0 fader_setting “local” “auditorium” If “auditorium” is selected, the main shaft fader is disabled as are any attached remotes (Cat. No. 779, Cat. No. 771). 0 ..
Dolby® CP650 Installation Manual External Control Query Querying an Individual Parameter “=?” returns a “=” output line for that key. Querying All Available Parameters “all= ?” results in a series of output lines representing every known key in the serial control system. Query Errors If a query cannot be parsed or does not match a known parameter, “error” will be output. External controllers must wait for the response to a query before proceeding. Notes 1.
Dolby® CP650 Installation Manual D.2 External Control Control via Remotes Connector CP650 control using single-wire communications via the Remotes and Aud. Fader connector is available in CP650 system software version 1.1.5 and later. To do so, it is recommended that a Cat. No. 779 Remote Control Unit or Cat. No. 771 Remote Fader be used. Dolby Laboratories occasionally receives requests to interface the CP650 to other types of computers, for the purposes of remote control.
Dolby® CP650 Installation Manual External Control Digital Data Communications Message Protocol Digital Data Communications Message Protocol (DDCMP) was developed by Digital Equipment Corporation as a serial link layer protocol. All messages between the CP650 and the remote accessories take place within the context of the DDCMP protocol. An important reference document, ddcmp.txt, is published by Digital Equipment Corporation. The network is a half-duplex multipoint network.
Dolby® CP650 Installation Manual External Control If the remote has been given the select flag, and it intends to change the state of the CP650, it will send the 1 byte data message. Note: All remotes must parse all messages. This requires looking at the length and cannot be ignored. To command the CP650 to toggle the mute setting, the data message must have a value of zero.
Dolby® CP650 Installation Manual Appendix E Setup and User Menus 12345678 E.1 CP650 Setup Menu DIP switch 6 UP The Bsl and Bsr channels (shown in italics) are available only with Cat. No. 790 installed. The Le and Re channels (shown in italics) are available only with Cat. No. 791 installed. B-Chain menu menu OK OK 1 (with Cat No.
Dolby® CP650 Installation Manual Setup and User Menus CP650 Setup Menu, B-Chain (Continued) menu menu OK OK Notes EQ center frequency: EQ filter width (“Q”): Level Cut: Channel: Level: 25–125 Hz 0.5, 1, 2, 4 0 to –12 dB L, C, R, Ls, Bsl, Bsr, Rs 1–127 (0.3 dB steps) Digital Subwoofer Level Adjust (Final) Level: 1–127 (0.3 dB steps) 13 Optical Subwoofer Bandwidth 50/100 Hz 50/100 Hz 14 Optical Subwoofer Level: Polarity: Center Noise: 1–127 (0.
Dolby® CP650 Installation Manual Setup and User Menus CP650 Setup Menu, A-Chain (Continued) (The shaded menu items do not apply to CP650DC models) menu menu OK OK Notes OK = Bypass/Normal toggle Set bypass trimpots (RTA test points active).
Dolby® CP650 Installation Manual Setup and User Menus CP650 Setup Menu, A-Chain (Continued) menu menu OK OK Notes 48 Headroom Configuration 49 Dialogue Normalization 50 Network Configuration 51 Clock Set 52 Date Set Typical Noise Floor Optimization Unity Gain (Cat. No. 778 only) Disabled/Enabled Disabled/Enabled Local IP address: 192.168.99.200 Address Mask: 255.255.255.0 Gateway address: 192.168.99.
Dolby® CP650 Installation Manual Setup and User Menus 12345678 E.2 CP650 User Menu DIP switch 6 Down The options shown in bold are the default settings when the unit was shipped from the factory. The shaded menu items do not apply to CP650DC models. menu menu OK OK Notes Top 1 This is the top-level menu display.
Dolby® CP650 Installation Manual Setup and User Menus CP650 User Menu (Continued) menu menu OK OK Notes Select from Format list or select Last Format used. Select from Format list or select Last Format used. 22 Power-On Format Select 22 Contrast Adjustment Set the display contrast. 23 Event Log Scroll up and down the event listing.
