Dolby Laboratories CP500-300 Installation Manual Page 1

Film-TechThe information contained in this Adobe Acrobat pdffile is provided at your own risk and good judgment.These manuals are designed to facilita

1-21.3 Regulatory NoticesFCCThis equipment has been tested and found to comply with the limits for a Class A digitaldevice, pursuant to part 15 of the

4-3DYNAMIC1. Thread a loop of Cat. No. 1010 through the projector, analog soundhead, andDigital Soundhead. Run the projector.2. Locate SW5, the top r

4-4Delay (ms)10 20 30 40 50 60 70 80 90 100 110 120 130 140 150Switch setting123456789A B C D E FWidth (in feet)20 30 40 50 60 70 80 90 100 110 120 1

5-1SECTION 5THEORY OF OPERATION5.1 DA20 Basic Functions5.2 Discussion of Changeover Technique5.3 Format Control5.4 Auxiliary Data Channel5.1 DA20 Basi

5-2Thresholding and Bit PackingEach dual DSP card then accomplishes Thresholding on the block of 5776 8-bit valuesrepresenting the center of each bit

5-3D/A ConversionThe three two-channel PCM audio serial data streams are converted to six analog audiochannels by the DAC card. Oversampling of the d

5-4CP200:When the CP Type switch is set to position 3 (Auto Digital mode) and the DA20 isconnected to the CP200 using a Cat. No.493 CP200 Auto Digital

5-55.4 Auxiliary Data ChannelThe Auxiliary data channel may be monitored using an RS-232 compatible device. Thedata format is RS-232 standard 115,200

6-1SECTION 6OPERATING INSTRUCTIONS6.1 How to Identify Sound Tracks on Prints6.2 Film Threading6.3 Displays6.4 Format Control6.5 Auliliary Data Channel

6-2dashpot-damped tension arms. The pad rollers on the toothed sprocket are coupled toallow easy film threading. A spring loaded roller arm damps va

6-3IndicatorsIndicatorsIndicatorsPresent1 perf10 perf100 perfX 10msIndicatorsIndicatorsDigital Signal LevelCinema Processor Type SwitchFixed DelaySurr

1-3GBDFIDSNLIMPORTANT SAFETY NOTICEThis unit complies with the safety standard IEC65. To ensure safe operation and to guardagainst potential shock ha

6-4Digital Status IndicatorsThese LEDs indicate the format of the audio coming from the DA20. When the upper(green) LED is on, Format 10 has been sel

6-5the yellow ‘Analog” LED turns on. Corrected digital data must remain valid for a periodof time before the DA20 will switch back to the digital aud

6-6Exception–CP45s built before mid-1997: The DA20 will not automatically switch theCP45 into Format 10 if Format 01(mono) has been selected.The DA2

6-7If all of the above conditions exist, then the DA20 will automatically assert Format 10 thuseliminating the need to separately cue digital films or

6-8which closes when power is applied to the projector) is used to initiate the digitalchangeover. Digital changeover occurs at eight seconds minus t

7-1SECTION 7MAINTENANCE AND ADJUSTMENTS7.1 Digital Soundhead Maintenance7.2 Print Cleanliness7.3 Adjustments7.1 Digital Soundhead MaintenanceThe Cat.

7-27.2 Print CleanlinessAs with any soundtrack, keeping the print clean will give best performance. The DolbyDigital print format has robust error co

8-1SECTION 8UNIT SERVICING / IN CASE OF DIFFICULTY8.1 Troubleshooting During the Show8.2 Problem Identification8.3 Test Mode Operation8.4 Starting and

8-2CP200—Press and hold the “GO” button on the CP200 for at least 4 seconds. The“Digital” LED on the DA20 will go off.CP500—Rotate the CP Type switch

8-3673611A686675674671671670(Left to right, facing front of DA20):SlotNumberCat.No.Description1 Empty2 reserved3 reserved4 reserved5 reserved6 reserve

2-1SECTION 2INITIAL SETUP AND INSTALLATION2.1 Mounting the Digital Soundhead2.2 Electrical Connections to the Soundhead2.3 Connection to Motor Start R

8-4Internal DisplaysCat. No. 670 (Video board)The Cat. No. 670 has two LEDs which indicate which Digital Soundhead is being read.DS2 (green) indicates

8-5Displays Indicating TroubleU (flashing) LINK not present (card missing). If the flashing U is being displayed,check for incompletely inserted card

8-66. Continue moving the switch and writing down the alphanumeric displayreadings for switch positions 4, 5, 6, 7, 8, and 9.7. Return the switch to p

8-7The reset switch used for warm-booting on the DA2O is a small red push-button locatedat the bottom of the Cat. No.673 System Services card. The fro

2-2mounting base down. The mounting base is the surface with thirteen mounting holes.Figure 2.1 shows how the mounting holes correspond to bolt patte

2-38. Thread film through the Digital Soundhead and first few rollers of the projector andadjust the placement of the Digital Soundhead such that ther

2-42.2 Electrical Connections to the Digital SoundheadVideo Cable Mounting AssemblyThe video cable is normally mounted to the Cat. No. 700 by a cable

2-5cables are available. An extra set of connector pins is included in case it is necessary tocut the cable for any reason.Plug the Molex connector o

2-6Wiring to the Molex Connector1. Strip back vinyl outer jacket of cable to 3.0 inches.2. Add 1/2 inch dia heat-shrink about 1/4 inch long near end o

2-77. Cut exposed wiring and twisted shield to the lengths indicated below; measured fromend of the outer cable casing.casingend of outershield - cut

2-812. Install pins into Molex housing according to wiring table121The pins must be inserted in the Molex connector block as shown in the following ta

MODEL DA20DIGITAL FILMSOUND PROCESSORInstallation ManualISSUE 6 Part No. 91341

2-92.4 Connection to Motor Start Relays–For 2 Projector InstallationsBecause the data on the Dolby Digital track is normally read in advance of the pi

2-102.5 Connections to Dolby Cinema ProcessorsThe DA20 may be connected to any of five Dolby Cinema Processors: the CP45, CP55,CP65, CP200, or CP500.

2-11InstallationThe changes below move format 05 (Dolby Stereo SR) to the format 03 button, freeing upthe aux button for the Dolby Digital input.1. Se

2-12LEFT CHANNELGROUNDRIGHT CHANNELFigure No. 2.6 Backplane connections at J144. Since the function of the front panel 03 button is now changed to fo

2-13c. If an SRA5 is currently installed using the AUX format, remove diodes D61,D64, D65, D66, and D72 shown in Figure 2.7 with an ✗. Add diode D67

2-14Cat. No. 242 Pin 19 to Cat. No. 441 Pin 10Cat. No. 242 Pin 17 to Cat. No. 441 Pin 11Cat. No. 242 Pin 16 to Cat. No. 441 Pin 12Cat. No. 242 Pin 9

2-15TB2Rs OUTPUT105KDCUT TRACE HERE1FF28A16 TA1indicatorfaderremoteID0ID1ID2mutegndS9S8SOS1S2S3S4S5S6S7syncCAT.NO.242J7J964BCAT.NO.CAT.NO.241J8indicat

2-16Connections Listing—CP55 to DA20 (See fold-out Figure 2.9)Audio from DA20 to CP55 CP55 to DA20 Sense/ControlDA20CP Audio out Conn. J8 (DB25 Male)

2-192.4.1.4 Cat. No. 441 AlignmentThe Cat. No. 441 alignment procedure (taken from the CP65 Installation Manual) begins here.Subwoofer AlignmentCat. N

Cat. No. 441 Alignment Instructions from the CP65 ManualActionIndicationStepNo.2-20012345678910selectlocal/remotemutelocal activeautosubwooferoffCAT.

INSTALLATION MANUALFORMODEL DA20 DIGITALFILM SOUND PROCESSORDolby Laboratories IncorporatedU.S.A. 100 Potrero Avenue, San Francisco, CA 94103Tel: 41

Cat. No. 441 Alignment Instructions from the CP65 ManualNotes2-21Cat. No. 441—Subwoofer AlignmentThe Subwoofer auto/off switch on the Cat. No. 441 car

Cat. No. 441 Alignment Instructions from the CP65 ManualActionIndicationStepNo.2-224567Cat. No. 441—Subwoofer AlignmentDolbyn-syncsurrgainQonpresentsi

Cat. No. 441 Alignment Instructions from the CP65 ManualNotes2-23Cat. No. 441—Subwoofer AlignmentAdjust the mag/dig gain control on the Cat. No. 441 c

Cat. No. 441 Alignment Instructions from the CP65 ManualActionIndicationStepNo.2-248910Cat. No. 441—Subwoofer AlignmentDolbyn-syncsurrgainQonpresentsi

Cat. No. 441 Alignment Instructions from the CP65 ManualNotes2-25Cat. No. 441—Subwoofer AlignmentTurn the freq control on the Cat. No. 441 card. A di

Cat. No. 441 Alignment Instructions from the CP65 ManualActionIndicationStepNo.2-2611112autosubwooferoffCAT. NO. 44113Cat. No. 441—Subwoofer Alignment

Cat. No. 441 Alignment Instructions from the CP65 ManualNotes2-27Cat. No. 441—Subwoofer AlignmentIf using a single microphone, relocate the microphone

Cat. No. 441 Alignment Instructions from the CP65 ManualActionIndicationStepNo.2-2814Cat. No. 441—Subwoofer Alignment.05.1.2.4.81.63.156.3 12.5 kHzdB–

Cat. No. 441 Alignment Instructions from the CP65 ManualNotes2-29Cat. No. 441—Subwoofer AlignmentAdjust the optical gain control on the Cat. No. 441 c

Cat. No. 441 Alignment Instructions from the CP65 ManualActionIndicationStepNo.2-30Cat. No. 441—Surround Equalization Alignment12OFFRIGHT SURROUNDPOWE

iTABLE OF CONTENTSINTRODUCTIONSpecifications ...

Cat. No. 441 Alignment Instructions from the CP65 ManualNotes2-31Cat. No. 441—Surround Equalization AlignmentThe surround equalizer on the Cat. No. 44

ActionIndicationStepNo.Cat. No. 441 Alignment Instructions from the CP65 Manual2-32Cat. No. 441—Surround Equalization AlignmentDolbyn-syncsurrgainQonp

NotesCat. No. 441 Alignment Instructions from the CP65 Manual2-33Adjust the Left Surround treble control to its mid point, so that it provides neither

ActionIndicationStepNo.Cat. No. 441 Alignment Instructions from the CP65 Manual2-34REPEAT 7→9Dolbyn-syncsurrgainQonpresentsignalgndgainbassQmidfreqcut

NotesCat. No. 441 Alignment Instructions from the CP65 Manual2-35Turn the freq control so that the notch is located over the peak noted in the previou

ActionIndicationStepNo.Cat. No. 441 Alignment Instructions from the CP65 Manual2-3685 dBCSTEREO SURROUND88 dBCMONO SURROUNDREPEAT 4→1185 dBCDolbyn-syn

NotesCat. No. 441 Alignment Instructions from the CP65 Manual2-37Adjust the Ls (Left surround) gain control on the Cat. No. 242 B-Chain card for a sou

ActionIndicationStepNo.Cat. No. 441 Alignment Instructions from the CP65 Manual2-38=18bypass(switch behind panel)NORMAL BYPASS10Dolby StereoDigitalC

NotesCat. No. 441 Alignment Instructions from the CP65 Manual2-39Thread and play the Cat. No. 151 stereo optical surround level film. Check the sound

2-402.5.2 Installation of DA20 with CP65Refer to the CP65 wiring diagram fold-out, Figure 2.10. Two cable assemblies arefurnished in the CP65 kit. T

iiSECTION 7 MAINTENANCE AND ADJUSTMENTS7.1 Digital Soundhead Maintenance ...

2-41CP65 to DA20 Sense/ControlFormat sense and control is accomplished via connection of CP S0 through S7 lines,connected to DA20 CTRL0 through CTRL7.

2-432.5.3 Installation of DA20 with CP200Refer to the CP200 wiring diagram fold-out, Figure 2.11. The lengths of cable in thewiring harnesses furnish

2-452.5.3.1 Cat. Nos. 517, 137L, and 560Installation and Operation Instructions (CP200)The Cat. Nos. 517 and 560 are designed to replace the Cat. Nos.

2-46Cat. No. 517 Jumper SettingsEach of the two Cat. No.517 has five programming jumpers and three switches:• S1 through S3 select a fixed treble boos

2-47Cat. No. 560 settingsThe Cat. No.560 has six programming jumpers and one switch on it:• J1 selects high or low output level range for the CP50 Rig

2-482.5.3.2 Installation of Cat. Nos. 517, 137L, and 560 inCP200 With NO Accessory UnitInstall the wiring shown in the wiring pictorial diagram (Figur

2-49FCHBDEGA1352173proj 2 controlproj 1 control1AT16SK29 SK28SK30116AT112323ABCAT.117 CAT.117CAT.137SK18112323ABCAT.141JM3JM3CAT.160CAT.150SP2emergenc

2-50When the backplane wiring is done as shown in the figure, the operation of the Cat.No.517s for the S, P (left surround), and Q (right surround) ch

2-51No text on this page.

ActionIndicationStepNo.Surround EQ Alignment Instructions from the CP65 Manual2-52Cat. No. 441—Surround Equalization Alignment12OFFRIGHT SURROUNDPOWER

SPECIFICATIONSiiiDA20 Digital Film SoundAdaptorInputsDigital SoundheadInputs for up to two Dolby Cat.No.699/700 Digital Soundheadsor comparable inboar

NotesSurround EQ Alignment Instructions from the CP65 Manual2-53Cat. No. 441—Surround Equalization AlignmentThe surround equalizer on the Cat. No. 441

ActionIndicationStepNo.Surround EQ Alignment Instructions from the CP65 Manual2-54Cat. No. 441—Surround Equalization AlignmentDolbyn-syncsurrgainQonpr

NotesSurround EQ Alignment Instructions from the CP65 Manual2-55Cat. No. 441—Surround Equalization AlignmentAdjust the Left Surround bass control on t

ActionIndicationStepNo.Surround EQ Alignment Instructions from the CP65 Manual2-56REPEAT 7→9Dolbyn-syncsurrgainQonpresentsignalgndgainbassQmidfreqcutt

NotesSurround EQ Alignment Instructions from the CP65 Manual2-57Turn the freq control so that the notch is located over the peak noted in the previous

ActionIndicationStepNo.Surround EQ Alignment Instructions from the CP65 Manual2-5885 dBCSTEREO SURROUND88 dBCMONO SURROUNDREPEAT 4→1185 dBCDolbyn-sync

NotesSurround EQ Alignment Instructions from the CP65 Manual2-59Adjust the Ls (Left surround) gain control on the Cat. No. 242 B-Chain card for a soun

ActionIndicationStepNo.Surround EQ Alignment Instructions from the CP65 Manual2-60=18bypass(switch behind panel)NORMAL BYPASS10Dolby StereoDigitalCa

NotesSurround EQ Alignment Instructions from the CP65 Manual2-61Thread and play the Cat. No. 151 stereo optical surround level film. Check the sound

2-622.5.3.3 Installation of Cat. Nos. 517, 137L, and 560 in a CP200 WITH anaccessory unit fitted with Cat. No. 64 Equalizers for P (Left Surround)and

INTRODUCTIONThis manual contains essential information on the installation and alignment of the DolbyModel DA20 Digital Film Sound Processor. It is d

2-63CDBA21proj 2 controlproj 1 control1AT16SK29 SK28SK30116AT112323ABCAT.117 CAT.117CAT.137SK18112323ABCAT.141JM3JM3CAT.160CAT.150SP2emergency c/oproj

2-64When the backplane wiring is done as shown in the figure, the operation of the Cat.No.517s for the S, P (left surround), and Q (right surround) ch

No text on this page.2-65

ActionIndicationStepNo.2-66012345678910selectlocal/remotemutelocal activeautosubwooferoffCAT. NO. 441123Cat. No. 441—Subwoofer Alignment from the CP6

Notes2-67Cat. No. 441—Subwoofer Alignment from the CP65 ManualThe Subwoofer auto/off switch on the Cat. No. 441 card enables the subwoofer informats o

ActionIndicationStepNo.2-684567Dolbyn-syncsurrgainQonpresentsignalgndgainbassQmidfreqcuttrebletpbassQfreqmidcuttreblegainmag/digopt gainoffautofreqcut

Notes2-69Turn the cut control at the top of the Cat. No. 441 card to the fully clockwise (CW) positionfor minimum cut. This disables the subwoofer eq

ActionIndicationStepNo.2-708910Dolbyn-syncsurrgainQonpresentsignalgndgainbassQmidfreqcuttrebletpbassQfreqmidcuttreblegainmag/digopt gainoffautofreqcut

Notes2-71Turn the freq control on the Cat. No. 441 card. A dip in the frequency response will movealong the frequency axis of the RTA display.Adjust

ActionIndicationStepNo.2-72.05.1.2.4.81.63.156.3 12.5 kHzdB–10+50–5+10CENTERCHANNELNOTE THIS LEVEL11112autosubwooferoffCAT. NO. 44113REPEAT→8 10autos

The system alignment procedure is divided into two parts:1. The mechanical alignment of the Cat. No. 700 Digital Soundhead.2. The electronic adjustmen

Notes2-73If using a single microphone, relocate the microphone to at least one other location in thetheatre and check the audio spectrum on the RTA.

ActionIndicationStepNo.2-74.05.1.2.4.81.63.156.3 12.5 kHzdB–10+50–5+10.05.1.2.4.81.63.156.3 12.5 kHzdB–10+50–5+1014SAME AS11215Dolbyn-syncsurrgainQonp

Notes2-75Adjust the optical gain control on the Cat. No. 441 card so that the average level of thebands from the subwoofer is at the same level on the

2-762.5.3.5 Output level adjustments of Cat. Nos. 517 and 560 in CP2001. Adjustment of P and Q channels.Select format 40 (70 mm mag no NR). Note: If

2-775. Adjustment of magnetic/digital subwoofer level.a. Systems with subwoofers but no Le or Re speakers.Select format 42 (Dolby Stereo 70 mm). Sel

2-782.5.3.6 DA20 to CP200 Wiring TablesRefer to the DA20 to CP200 wiring diagram fold-out, Figure 2.11.Audio from DA20 to CP200 Audio from CP200 to DA

2-79DA20 J6DB25 MalePin NumberCat,. No. 493 DB25 Female Pin Number / CP200 Backplane1 CTRL0 1 SW Control / B21 of SK13 (Soldered)2 CTRL1 2 Assert G

2-80 treble comp (disabled inS slot of CP200)treble comptreble compinoutinoutinoutOUTPUTSlevelrangeLoHiL/ LeS/P/QR/ Re15164C/S3C/S levelL/Le level

2-81EQDownward ExpanderEQFaderSURROUNDLOGICLeftLeft SurroundRight SurroundSubwooferOpticallevelMag/digitallevelAAon/offINPUTSOUTPUTSCP50 CP200B11A16A5

2-822.5.4 Installation of DA20 with CP45An Adapter board, Cat. No. 545, is available for connecting the DA20 to the CP45 rearpanel connector J10. Ref

1-1SECTION 1EQUIPMENT REQUIRED/POWER REQUIREMENTS1.1 Equipment Required1.2 Power Requirements1.3 Regulatory Notices1.1 Equipment RequiredThe following

2-83DA20 to CP45 Sense/Control(This cable is Available from Dolby Laboratories as Part No. 83135)DA20 CP Sense/Control J6 (DB25 Male) PinoutCP45 Ada

2-852.5.5 Installation of DA20 with CP500Refer to the CP500 wiring Diagram fold-out, Figure 2.19CP500 to DA20 Connection TablesAudio from DA20 to CP50

2-86DA20 to CP500 Sense/ControlDA20CP Sense/Control J6(DB25 Male)PinoutCP500 Automation(DB25 Female)Pinout1 CTRL0 1 SK1 Format Select Input2 CTRL1 2

3-1SECTION 3CAT. NO. 700 DIGITAL SOUNDHEAD ALIGNMENT3.1 Cat. No.700 Digital Soundhead Alignment3.2 Test Setup with Oscilloscope3.3 Focus Adjustment

3-26. Adjust the Ch 2 vertical trace position to move the trace off the screen. It is notnecessary to view this signal once triggering has been estab

3-33.4 Exciter Lamp Level Confirmation and AdjustmentThe output voltage of the lamp power supply is factory-set to be between 9.5 and 10volts. Lamp i

3-4ADJUSTMENT SCREWLATERAL CLAMP SCREWTENSION ARMSPRING3.6 Optical AlignmentThe soundhead is optically aligned at manufacture and should not require a

3-5image on the scope. When the video trace is centered with respect to the clamptrace, tighten the screws. XXCLAMP (TRIGGER) TRACEVIDEO TRACEAzi

4-1SECTION 4MODEL DA20 ALIGNMENT4.1 Cinema Processor Type Selection4.2 Digital Soundhead Delay Adjustment4.3 Digital Surround Delay Adjustment4.1 Cine

4-24.2 Digital Soundhead Delay AdjustmentOn a Dolby Digital print, the digital data is located 6 frames in advance of the analogsoundtrack, and 26 fra