JSD 80 Manual

8/9/2019 JSD 80 Manual

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USL, Inc. JSD-80 Instruction Manual Page 11st Edition. December, 2004

1. Introduction .................................... 3

1.1 Safety notice1.2 Unpacking1.3 The JSD-80 Overview1.4 Technical Specifications1.5 Certifications

2. Installation ...................................... 92.1 System Hardware Mounting

and Grounding2.2 System Cooling and Ventila-

tion

3. Block Diagrams ............................ 103.1 Audio Block Diagram3.2 Two-Channel Analog Inputs

Block Diagram3.3 Eight-Channel Input Block

Diagram3. Control Block Diagram

4. System Modules ........................... 144.1 Input Module

4.2 Output Module4.3 Control Module

5. Front Panel .................................... 155.1 Overview5.2 Adjusting Format Levels5.3 Adjusting Projector Gains

6. Back Panel .................................... 166.1 Rear Wiring Diagram6.2 Back Panel Input Connec-

tions

6.3 Back Panel Signal OutputConnections

6.4 Other Back Panel Connec-tions

7. JSD-80 Interface Software ............ 197.1 Installation Procedure7.2 Opening screen7.3 Profile Screen

7.4 Formats Screen

7.5 Inputs Screen7.6 Equalizer Screen7.7 Outputs Screen7.8 Slit Eq Analyzer7.9 Creating, Saving and Loading

Configuration Files

8. “A” Chain Alignment .................... 238.1 Preparing the Soundhead8.2 Alignment of Solar Cell and

Preamplifier

8.3 Sum and Difference Mode8.4 Mono EQ and Bypass Level8.5 Optical Surround Gain and

Delay8.6 Optical Subwoofer8.7 Analog Non-Sync, Aux and

Mic levels8.8 Digital Non-Sync, Digital Aux,

and Digital eight-channelinputs

8.9 Digital Time Delays9. “B” Chain Alignment .................... 299.1 Channel configuration9.2 Headroom settings9.3 Main channels9.4 Subwoofer channel9.5 Saving Settings After Align-

ment

10. Other Options .............................. 3310.1 Pre-set Format Levels

10.2 Startup Mode10.3 Remote Fader10.4 System Restore from Person-

ality Module

11. Trouble Shooting ......................... 35

12. Connector Pinouts ....................... 38

13. Installation Check List ................. 39

Table Of Contents

JSD-80Cinema Sound Processor


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USL, Inc. JSD-80 Instruction Manual Page 2 1st Edition. December, 2004

One Year Limited Warranty

★★★★★

USL, Inc. warrants that each product manufactured by it will be freefrom defects in material and workmanship under normal usage fora period of one (1) year after its purchase new from an authorizeddealer. Our obligation under this warranty is limited to repairing orreplacing any product or component which we are satisfied does notconform with the foregoing warranty and which is returned to our fac-tory, freight paid, or serviced by one of our authorized contractors.The foregoing warranty is exclusive and in lieu of all other warranties,whether expressed or implied. Such warranty shall not apply to any

product or component (A) repaired or altered by anyone other thanUSL, Inc. or an authorized service contractor; (B) tampered with oraltered in any way or subjected to misuse, negligence or accidentor (C) which has been improperly connected, installed or adjustedother than in accordance with USL, Inc. instruction.


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Please read the entire manual before begin-ning your installation.

1.1 Safety Notices

General Safety Summary EuropeanReview the following safety precautionsto avoid injury and prevent damage tothis product. To avoid potential risk, usethis product only as specified and only forthe purpose described in the instructionmanual.

To Avoid Fire and Personal Injury:• Use Correct Power Cable. Use only

the power cable provided. Ensure

that the AC power outlet is locatednear the product and is easily acces-sible.

• Use a Correctly Grounded PowerSource. The Power Supply earthground is established through theground conductor in the power cable.To avoid the potential of electricshock, the ground conductor must becorrect.

• Observe Source Ratings. To avoid risk

of fire or electric shock, the powersource must be 100 - 240 V AC 50-60Hz. (European Models)

• Do Not Operate with Suspected Fail-ures. If you suspect there is damageor malfunction with this product, callthe factory.

• Do Not Attempt Repair. Only a trainedfactory service person is authorizedto repair this product.

• Do Not Operate this Product Near

Heat Sources. This product shouldnot be located near heat sources suchas radiators, heat registers, or stoves.

• Provide Proper Ventilation. The oper-ating temperature range is between0° C and 40° C. The humidity range isbetween 20% and 80%, non-condens-ing. The cooling method is by convec-tion.

• Keep Product Surfaces Clean and Dry.Disconnect the power cable from thepower source before cleaning. Do not

use liquid cleaners or aerosol clean-ers. Use a damp cloth for cleaning.• Do Not Push Objects Into Opening

of this Product. Never insert objectsinto the product through openings.

• Do Not Operate In Wet or Damp Con-ditions.

• Do Not Operate in an Explosive Atmo-sphere.

• Prevent the Spilling of Liquids ontothe System Components.

• Inspect the Power Cable and allCables prior to Use. Confirm that thepower cable and other interconnect-ing cables are free from damage.

Safety StandardThe EN 60950 standard specifies safetydesign requirements that reduce or elimi-nate the risk of personal injury to both theproduct user and service personnel. Thisproduct is designed and tested to meet thestandards of the International Electrotech-nical Commission (IEC) European Norm EN60950, IEC 60950 (The Standard for Infor-mation Technology Equipment IncludingElectrical Business Equipment).

Section 1. Introduction


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Le Résumé de la Sécurité généralEuropéen

Examinez les précautions de la sécuritésuivantes éviter la blessure et prévenir ledégât à ce produit. Éviter le risque poten-tiel, utilisez ce produit seulement commea spécifié et seulement car le but a décritdans le manuel d’instructions.

Éviter Feu et Blessure Personnelle:• Utilisez le Câble du Pouvoir Correct.

Utilisez seulement le câble du pouvoirfourni. Assurez que les AC font fonc-tionner le débouché est localisé prèsle produit et est accessible facile-ment.

• Utilisez une Source du Pouvoir Cor-rectement Fondée.

La terre du monde de la Provision duPouvoir est établie à travers le con-ducteur moulu dans le câble dupouvoir. Éviter le potentiel de chocélectrique, le conducteur moulu doitêtre correct.

• Observez des Estimations de laSource. Pour éviter risque de feu ouchoc électrique, la source du pouvoirdoit être 100-240 V AC 50-60 Hz..

• N’opérez as ce Produit avec Toutes

Clôtures Ouvertes ou Enlevez.• Évitez l’Ensemble de circuits Exposé.

N’entreprenez pas ouvrir la Provisiondu Pouvoir parce que sa certi-fica-tion de la sécurité serait invalidée. LaProvision du Pouvoir est un appareilscellé non-réparable.

• N’opérez pas avec les Échecs Sus-pects. Si vous suspectez il y a le dégâtou mal fonctionner avec ce produit,appelez l’usine.

• N’entreprenez pas Réparation. Seule-ment une personne du service del’usine compétente est autorisée pourréparer ce produit.

• N’opérez pas ce Produit Sources dela Chaleur Proches. Ce produit nedevrait pas être localisé de sourcesde la chaleur proches tel que radia-teurs, registres de la chaleur, poêles,

ou amplificateurs.• Fournissez Ventilation Adéquate.

La température du fonctionnementdevrait être entre 0° C et 40° C.

• L’humidité devrait être 20% et 80%. Laméthode refroidissante est par con-vection et un ventilateur interne.

• Gardez les Surfaces du Produit Nettoi-ent et Sec.

• Déconnectez le câble du pouvoir de lasource du pouvoir avant de nettoyer.N’utilisez pas de nettoyeurs liquidesou de nettoyeurs de l’aérosol. Utilisezun tissu humide pour nettoyer.

• Ne poussez pas d’Objets Dans Ouvrirde ce Produit.

• Jamais objets de l’encart dans le

produit à travers ouvertures.• N’opérez pas Dans les ConditionsMouillées ou humides.

• N’opérez pas Dans une AtmosphèreExplosive.

• Prévenez le Répandre des Liquidessur les Composants du Système.

• Inspectez le Câble du Couvoir et tousles Câbles antérieur à Usage. Confir-mez que le câble du pouvoir et autresinterconnectant câbles sont libres de

dégât.Le Niveau de la sécurité

L’EN 60950 niveau spécifie exigences dudessin de la sécurité qui réduisent ou élimi-nent le risque de blessure personnelle àl’utilisateur du produit et personnel du ser-vice. Ce produit est conçu et est testé poursatisfaire aux niveaux de l’ElectrotechnicalCommission Interna-tional (IEC) Norm Eu-ropéen EN 60950, IEC 60950 (Le Niveau pourMatériel de la Technologie de l’Informationqui Inclut le Matériel de l’Affaire Élec-trique).


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Allgemeine Sicherheit-ZusammenfassungEuropäisch

Überprüfen Sie die folgend Sicherheit-Vorkehrungen, Verletzung zu vermeidenund Schaden zu diesem Produkt zu ver-hindern. Um potentielles Risiko zu vermei-den, benutzen Sie dieses Produkt nur als

vorgeschrieben hat und nur denn der Zweckbeschrieb in der Bedienungsanleitung.

Um Feuer und Persönliche Verletzung zuvermeiden:• Benutzen Sie Korrektes Macht-Kabel.

Benutzen Sie nur das Macht-Kabel,das bereitgestellt wurde. Stellen Siesicher, daß der WECHSELSTROM-Macht-Abfluß in der Nähe vomProdukt gefunden wird und leicht

zugänglich ist.• Benutzen Sie eine Korrekt geerdetMacht-Quelle. Der Macht VersorgungErde Boden wird durch den Boden-Schaffner im Macht-Kabel gegründet.Das Po-tential elektrischen Schockszu vermeiden muß der Boden-Schaff-ner korrekt sein.

• Beobachten Sie Quelle-Klassen. Risikovon Feuer oder elektrischem Schockzu vermeiden muß die Macht-Quelle

100 sein-240 V AC 50-60 Hz.• Operieren Sie dieses Produkt mitIrgendwelchen Gehegen nicht, diegeöffnet wurden, oder entfernen Sie.

• Vermeiden Sie Ungeschützten Schalt-kreise. Versuchen Sie, die Macht-Ver-sorgung zu öffnen nicht, weil seine Si-cherheit-Zulassung ungültig gemachtwerden würde. Die Macht-Versorgungist ein nicht-reparierbares luftdichtverschlossene Gerät.

• Operieren Sie mit verdächtigt Mißer-folgen nicht. Wenn Sie verdächtigen,gibt es Schaden oder Funktions-störung mit diesem Produkt, rufen Siedie Fabrik.

• Versuchen Sie keine Reparatur. Nureine erzogen Fabrik-Dienst-Personwird ermächtigt, dieses Produkt zureparieren.

• Operieren Sie dieses Produkt Nahe

Hitze-Quellen nicht. Dieses Produktsollte keine nahe Hitze-Quellen wieHeizkörper, Hitze-Register, Herde,oder Verstärker gefunden werden.

• Stellen Sie Richtige Belüftung bereit.Die operierend Temperatur solltezwischen 0° C und 40° C. Die Luft-feuchtigkeit sollte sein 20% und 80%.Die erfrischend Methode ist durchKonvektion und einen innererenFächer.

• Bleiben Sie, Produkt-Oberflächen rei-nigen und Trocken. Trennen Sie dasMacht-Kabel von der Macht-Quellevor dem Reinigen. Benutzen Sie keineflüssige Reiniger oder Aerosol-Reini-ger. Benutzen Sie einen klammen Stofffür das Reinigen.

• Schieben Sie keine Gegenstände InsÖffnen von diesem Produkt. Nie Beifü-gung-Gegenstände ins Produkt durchÖffnungen.

• Operieren Sie In Nassen oder Klam-men Zuständen nicht.

• Operieren Sie In einer ExplosivenAtmosphäre nicht.

• Verhindern Sie das Verschütten vonFlüssigkeiten auf die System-Bestand-teile.

• Inspizieren Sie das Macht-Kabel undalle Kabel vorausgehend zu Verwend-ung. Bestätigen Sie, daß das Macht-Kabel und andere verbindend Kabelfrei von Schaden sind.

Sicherheit-StandardDer EN 60950 Standard schreibt Sicherheit-Entwurf-Anforderungen vor, der reduzierenoder das Risiko persönlicher Verletzung zusowohl dem Produkt-Benutzer als auch Di-

enst-Personal ausschließen. Dieses Produktwird entworfen und wird geprüft, um denStandards vom Internationalen Electrotech-nical Commission zu entsprechen (IEC) eu-ropäischer Norm EN 60950, IEC 60950 (DerStandard für Informationen-Technologie-Ausrüstung, die Elektrische Unternehmen-Ausrüstung einschließt,).


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1.2 UnpackingUnpack the unit carefully. If the containerhas been damaged, thoroughly inspect theequipment to make certain there is no hid-den damage. File a claim immediately withthe carrier if any damage is found. Alsoadvise your dealer or the factory.The box should include the following items.If anything is missing, notify your dealer orthe factory:

• JSD-80 Chassis• Power Supply cable• Backup Power Supply• Screw-terminal plugs (4)• DB-9 connectors (2)

• CD with PC Host program• Instruction Manual

1.3 The JSD-80 OverviewUltra Stereo has combined its vast expe-rience with conventional analog theatersound systems with state of the art digitalsignal processing technology. The result:The JSD-80, which we believe to be the finestsurround decoder available today. Some ofthe standard features include:

• Dual stereo projector inputs with low-noise preamplifiers, individual gainand high-frequency boost controls,

and emergency backup circuitry.• Stereo line-level inputs for Non-Sync(with fade-in), plus an Auxiliary input.

• The Microphone input is for publicaddress use.

• 100 % digital “A” and “SR” type noisereduction that emulates the analogstandards.

• Eight-channel discrete analog inputfor interfacing to existing digital for-mat 35mm film decoders.

• 1/3 octave equalization on ALL chan-nels except subwoofer.

• Advanced automation features includ-ing level settings for each format.

• Built-in Personality Module contains abackup copy of all settings which canbe used to restore the system.

The JSD-80 unit includes all of the abovefeatures in every unit. All units come withan international power supply and a backuppower supply.

• Optional eight-channel AES-EBU

digital inputs for interfacing to digitalsources.• Optional AC3 decoder with two

S/PDIF inputs.This manual contains information on theinstallation, set-up, and operation of theJSD-80 Cinema Processor. Also included isfundamental information on alignment ofprojector soundheads.

IMPORTANT NOTICE

The AC3 license from Dolby Laboratoriesis for ALTERNATIVE CONTENT ONLY!


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Voltage adjustment: Nonef. Digital Input: Eight channels AES-EBU @ 32-96 kHz,

24-bit sample rate.

Line Outputs:

Voltage: 24 mV to 750 mV (nominal:300 mV)Impedance: < 500 OhmsGain Adjustment: -22 to +8 dBHearing Impaired Outputs: 500 Ohms im-pedanceNominal level: 300 mV rms: sum of L,C & Rwith left and right channels lowered 3 dB.

Audio Signal PathsHeadroom: 26 dB (with EQ flat), 20 dB typi-cal with 6 dB EQ boost)S/N Ratio: 80 dB A weighted 22-22 kHzEQ (subwoofer): one parametric adjustablefrom 20 to 100 HzEQ bands (all other): 27 1/3 octave bandsfrom 40 Hz to 16 kHzEQ level adjustment: +/-6 dBBass and Treble adjustable +/-6 dB

Automation Inputs:

Active low, momentary dry contact clo-sures. Automation common is connectedto signal ground inside the JSD-80 througha 10 Ohm resistor (to minimize ground loopproblems).

Automation Outputs (DB25):Active low. Recommended indicator circuitis a standard LED with a 1k series resistorconnected between 5 V and the automationstatus line. (See Section 12.)

Power Input:100-240 V AC 50-60 Hz @ 360 mA JSD-80, Cinema Sound Processor

1.4 Technical Specifications:Rack-mount chassis frame constructionwith plug-in modules accessible behindremovable front panel.

Signal Connectionsa. Standard 9-pin D-type female connec-

tors for Projector 1, Projector 2, Mic,and RS-232 communications port.

b. Standard 25-pin D-type female con-nectors for Analog eight-channel In-put (Ext 1), Digital eight-channel (Ext2) and automation I/O.

c. Standard 25-pin D-type Male for Moni-tor output.

d. Detachable screw terminal connec-tors are used for Automation inputs,Hearing Impaired output, Line out-

puts, Changeover pulse, Remote faderand Mute.

e. RCA jacks are used for Non/Sync andAux input.

Signal Inputsa. Projector Inputs: Voltage: 0.35 mV nominal Impedance: 360 Ohms Voltage adjustment: -23.9 to +11.9 dB

(.35 to 20 mV)

High Frequency Slit EQ: 10 to 32 kHzb. Non-Sync Input:

Voltage: 300 mV rms Impedance: 30 kOhms

Voltage adjustment: -24 to +6 dB (150-750 mv)

c. Auxiliary Input: Voltage: 300 mV rms Impedance: 30 kOhms

Voltage adjustment: -23.9 to +11.9 dB

(75 mV-1.2 V)d. Microphone Input:

Impedance (mic): 2 kOhms Voltage adjustment: -23.9 to +11.9 dB

(1.1-17.6 mV)e. Analog eight-channel Input:

Voltage: 300 mV rms Impedance: 30 kOhms


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EC Declaration of ConformityMeets intent of Directive 89/336/EEC forElectromagnetic Compatibility and Low-Voltage Directive 73/23/EEC for ProductSafety. Compliance was demonstrated tothe following specifications as listed inthe Official Journal of the European Com-munities:EN 55022 Conducted Emissions, EN 55022Radiated Emissions: Class A Limits

EN 55024 Immunity:EN61000-4-2 Electrostatic Discharge Im-munityEN61000-4-3 RF Electromagnetic Field Im-munityEN61000-4-4 Electrical Fast Transient/Burst ImmunityEN61000-4-5 Power Line Surge ImmunityIEN61000-4-6 Conducted RF ImmunityEN61000-4-7 Voltage Dips, Short Interrup-tions and Variations

CertificationsLow Voltage Directive 73/23/EEC:

EN EN60950 Information Technology,Video and similar Electronic Apparatus

Safety Requirements IEC 60950

CE, UL, cUL Safety and Overall Compli-ance

VDE Certified Power Cords

PollutionNot intended for environments where con-

ductive pollutants may be present.

Equipment ClassClass III Equipment: Equipment in whichprotection against electrical shock reliesupon supply from SELV circuits (SafetyTransformer) and in which hazardousvoltages are not generated. Insulation andprotective fusing are used in addition tothese criteria.Equipment Type A: Equipment that is

intended for connection to the buildingpower supply wiring via non-industrialplugs and sockets or via appliance cou-plers or both.

1.5 Declaration ofConformance, CE


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Section 2: Installation

2.1 System Hardware Mountingand Grounding

The JSD-80 is designed to mount in a stan-dard 19" rack, and is two standard rackspaces (3-1/2") high. We recommend ventedpanels above and below whenever spacepermits. Mounting the unit immediatelyabove a major heat-producing component(such as a power amplifier) is not recom-

mended. The JSD-80 includes a three-pronggrounding plug and a three-wire powercord to accommodate a safe ground pathfrom the chassis to the electrical systemground. Defeating this ground by removingthe ground prong is not recommended.

2.2 System Cooling andVentilationImportant

Care should be taken to insure the JSD-80has adequate ventilation for cooling duringoperation. It is recommended that one rackspace below the JSD-80 is left open to allowoutside air circulation through the unit. Aventilation panel, USL, Inc. part numberVP-1, is recommended for projection boothswhere the normal ambient temperature

exceeds specified equipment operatingtemperatures listed in the safety sectionof this manual. Also, it is recommendedthat equipment with no more than a nine-inch depth be mounted directly above theJSD-80 to insure adequate airflow throughthe unit’s rear ventillation slots.


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Section 3: Block Diagrams

3.1 Audio Block Diagram


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3.2Two-ChannelAnalogInput BlockDiagram


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3.3Eight-ChannelInput BlockDiagram

E x t 1

E x t 2


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3.4Control BlockDiagram


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4.1 Input ModuleThe Input Module contains the projectorpreamps plus Non-Sync, Auxiliary and Micinputs. It also contains the bypass circuitry.Two high-power DSPs implement “A” typeand “SR” noise reduction. A third DSP isused for the matrix decoder, slit eq analyzerand pink noise generator. Test points permitconnection of an oscilloscope to align thefilm projector’s analog reader. LEDs indicatethe presence of left, center, right and sur-round signals. Bicolor LEDs indicate thecorrect level for LT and RT preamp inputs.A status LED indicates the module is in a“fault” condition.

1. Projector 1 Bypass Level Adjust2. Projector 2 Bypass Level Adjust3. Left Channel Test Point4. Projector 1 Indicator green LED5. Right Channel Test Point6. Projector 2 Indicator red LED7. Ground Test Point8. Bypass level test point9. *Left channel level indication.

10. *Right channel level indication.11. Signal presence LEDs left to right: L,C, R, Surround

12. THX pink noise enable jack13. Status: Fault red LED *A red color indicates signal is “low,”

a green color means OK, flashing redindicates “high.”

4.2 Output ModuleThe Output Module contains the eight-chan-

nel analog and AES-EBU input circuitry. Italso contains the balanced output circuitry.Two high-power DSPs implement sevenchannels of 1/3 octave equalization, plus aparametric subwoofer equalizer. Test pointson each channel permit connection of diag-nostic instruments. Level LEDs indicate thepresence of signals. A status LED indicatesthe module is in a “fault” condition.

1. Test Point. Gnd.

2-16. Signal presence LEDs left to right:L, C, R, Sw, Ls, Rs, Bsl, Bsr, (or Lc,Rc)

3-17. Test point left to right: L, C, R, Sw,Ls, Rs, Bsl, Bsr (or Lc, Rc)

18. Status Light

4.3 Control ModuleThe Control Module manages all the com-munication in the unit. It also contains theautomation interface, bypass volume andremote volume circuitry.

On the Control Module is a “Non-VolatileFlash” memory card known as the “Person-ality Module.” This module contains a copyof all the installation alignment settingsmade to the unit. If there is a failure of any ofthe three internal modules, a technician willbe able to re-install the original alignmentsettings without requiring a laptop.

1. Personality Module2. Write Protect Switch3. Write Protect Indicator LED4. Restore Switch5. Restore6. Fault

Note: When using the laptop interface, prior to saving the configurationand parameters to the Personality Mod-

ule (1), you must slide the Write Protect Switch (2) to the left (OFF) to allow writ- ing to that module. Please remember toturn the Write Protect Switch (2) to “ON”after the data is saved to the Personality

Module (1).

Section 4: System Modules


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5.1 OverviewThe front panel allows the operator to manuallyselect formats and adjust the main fader. An LEDnumerical readout indicates fader level. StatusLEDs indicate presence of power supplies. Theunit is placed into the bypass mode by turningoff the main power switch. A removable panelallows access to service or replace modules.

5.2 Adjusting Format LevelsEach format has a preset level. These presetscan be set with a laptop or directly on the frontpanel. Pressing and holding the appropriateformat button and rotating the main fader willchange the preset level for that format. The LEDdisplay will indicate the preset level number.

5.3 Adjusting Projector Gains1. Turn off the processor.2. Hold down the “Mute” button and turn

the power on.

3. Continue to hold the “Mute” buttonuntil the LED display indicates 1.1 whichmeans Projector 1, Left channel.

4. Run a Cat 69T tone loop on the projector.5. Watch the LED level indication on the

Input Module: (9 & 10).

6. If the left indicator (9) is red, the signalis too low. Rotate the main fader controlclockwise to raise the level. When thelevel is correct, the indicator (9) willturn green. A flashing red means that thesignal is too high.

7. When the left indicator is green, pressthe “Mute” button to signal OK. The dis-play will change to 1.2 (Projector 1, RightChannel). Adjust the main fader until theright (10) indicator turns green. Press“Mute.” The optimum setting is first clickfrom solid red to solid green.

8. The LED display will show 2.1 (Projec-tor 2, Left Channel). Press “Mute” when

adjustment is complete. If there is noProjector 2, press “Mute” twice to returnto normal operation. If there is a Projec-tor 2, press “Mute” once and proceed tostep 9.

9. The LED display will show 2.2 (Projector2, Right Channel). Press “Mute” when theadjustment is finished.

10. The last “Mute” button press will returnthe system to its normal operating mode.Operation will resume after six seconds.

1 .

M o n o s i g n a l f r o m 3

5 m

m a n a l o g s o u n d t r a c k

2 .

S t e r e o

s i g n a l w i t h

“ A ” t y p e

n o i s e

r e d u c t i o n

f r o m

3 5 m m

s o u n d t r a c k

3 .

S t e r e o

s i g n a l w i t h

“ S R ” t y p e

n o i s e

r e d u c t i o n

f r o m

3 5 m m

s o u n d t r a c k

4 .

E x t . 1 : E i g h t - c h a n n e l a

n a l o g i n p u t

5 .

E x t . 2 : E i g h t - c h a n n e l A

E S / E B U d i g i t a l i n p u t

6 .

N o n / S y n c : T w o - c h a n n e l i n p u t w i t h f a d e i n , f a d e o u t

7 .

A u x : T w o - c h a n n e l i n p u t

8 .

M i c : f o r p

a g i n g p u r p o s e s

9 .

M u t e : g l o

b a l l y m u t e s a l l o u t p u t s

1 0 . L e v e l I n d

i c a t o r : a l s o u s e d f o r s e t t i n g p r o j e c t o r g a i n s

1 1 . P o w e r S w

i t c h : w h e n o f f , u n i t g o e s i n t o b

y p a s s m o d e .

1 2 . B y p a s s L

E D : i n d i c a t e s B y p a s s i s a c t i v e .

1 3 . P o w e r L E

D s : i n d i c a t e s s t a t u s o f a l l i n t e r

n a l s u p p l i e s .

1 4 . M a i n F a d

e r C o n t r o l : a l s o u s e d f o r s e t t i n

g p r o j e c t o r g a i n s .

Section 5: Front Panel


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Section 6: Back Panel6.1 Rear Wiring Diagram


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6.2 Back Panel InputConnections

Projector InputsThe projector inputs are connected throughstandard 9-pin D-type connectors. (Theseconnectors are included with the JSD-80).

The pinout is:1. In L+2. In L-3. Shield4. In R+5. In R-6. Gnd7. Reserved8. Reserved9. Gnd

(An adapter board with setscrew terminalsis available for solderless connections.)

Non-Sync Inputs - AnalogTwo RCA connectors facilitate easy con-nection to standard CD players. A softwarefade in/fade out algorithm allows smoothtransition between intermission music andthe main program.

Auxiliary Input - AnalogTwo RCA connectors are used to connect

to external two-channel sources such as asound card in a computer supplying videoadvertising content.

Microphone InputThe public address balanced microphoneinput is available on a standard 9-pin D-typeconnector.

The pinout is:1. Mic in +2. Mic in -

3. Reserved4. Reserved5. Chassis Gnd.6. N/C7. 9 V DC8. Gnd9. N/C

The “Mic in +” and “Mic in -” terminals arefor the balanced medium-low impedance

microphone inputs. The shield of the micro-phone cable should be connected to chassisground on pin 5. A 9 V DC power pin allowseasy connection of electret (powered) mi-crophones.

EXT 1 (Analog)

The Analog input is an eight-channel un-balanced analog audio input from a digitalsoundtrack player. The 25-pin D connectoris compatible with most decoders. Inputlevel should be 300 mV for all channels. SeeSection 12.

EXT 2 (Digital)The Digital input is a digital domain inputconfigured for eight channels (Four AES-EBU pairs with sample rate from 32 to 96kHz). Requires optional AES-EBU Module

(DI85). See Section 12Non/Sync Inputs - Digital

Requires optional Module (DI83). An RCAjack accepts S/PDIF inputs from CD, DVD,or computer sound cards. Sample ratesfrom 32-96 kHz PCM are supported, AC3bitstreams are also supported.

Auxiliary Inputs - DigitalRequires optional Module (DI83). An RCAjack accepts S/PDIF inputs from CD, DVD,

or computer sound cards. Sample ratesfrom 32-96 kHz PCM are supported. AC3bitstreams also are supported.


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6.3 Back Panel Signal OutputConnections

Main OutputsThese are the main processor outputsto connect to the power amplifiers. Theoutputs are balanced, and all have a cor-responding ground terminal. Use two-con-ductor shielded cable for each channel.The shield should usually be connected toground at the power amplifier end only.

Monitor Outputs

This is a 25-pin D-type connector containingthe line output signals for all eight channels.It can be connected directly to any UltraStereo “CM” series monitors. The pinout forthis connector is in Section 12.

Hearing Impaired OutputThis line-level output is the sum of theleft, center, and right channels. It can beconnected to an “Ultra Phonic” or otherhearing impaired system. Output level isapproximately 300 mV.

Back Panel Automation Connections

Automation Inputs (Phoenix Connector)These are active low-contact closure inputsto remotely trigger the JSD-80. There arenine automation inputs; one for each of theeight JSD-80 operating formats, and a “Mute”input. These are intended to be momentarycontact closures. The “Mute” function isreleased by selecting (or re-selecting) oneof the main input formats.

The Automation common terminal is iso-lated from the system ground through aninternal 10 Ohm resistor to minimize groundloop problems.

Note: When wiring the automation inputs, use the Com terminal, not a groundterminal.

Automation (DB-25)This 25-pin D-type connector contains most(not all!) of the automation input and outputsignals. The pinout for this connector is inSection 12.

Note: An adapter is available to convertto the DTS automation pinout (DTS-6D).

LEDs for monitoring the status of the JSD-80can be connected in series with a 1k resistorfrom +5 V at pin 13, to any of these outputs.

See Section 12.Bypass Power Input

The JSD-80 uses an external 16 V AC @500 mA power supply to power the bypasscircuit.

Remote Fader InputTwo normally open switches can be usedto implement a remote fader. One buttonincreases level, the other decreases level.The range is limited to 4.0 - 9.0 on the main

fader. See Section 10.3.Changeover

The JSD-80 includes dual preamplifiers foruse in two-projector changeover systems.Connecting the “XO” terminal to “Common”mutes the Projector 1 input and selectsProjector 2. This must be a maintainedclosure.

RS232 PortA standard 9-pin D-type connector connects

to a host PC computer. The cable shouldbe a standard male to female “straightthrough” type. The port also can be usedfor remote fader and automation functions.See Section 12.


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7.1 Installation ProcedureBegin by placing the JSD-80 Laptop InterfaceSoftware CD into your CD-ROM drive. Thesoftware is compatible with Windows only.The installation program should start au-

tomatically within a few seconds. If it doesnot, you will need to run “Setup.exe” fromthe root directory of your CD-ROM drive.Either double click the “Setup.exe” icon orclick the Windows “Start” button and select“Run....” Now enter “X:\setup.exe” (where“X:” is your CD-ROM drive), then click the“OK” button. Follow the instructions in theinstallation software.

7.2 The Opening Screen

Double click on the JSD icon on the desk-top.The opening screen appears.The opening screen is comprised of theMenu Bar, the Tool Bar, tabs for accessingsoftware functions and, on the Profile tab,a system information entry area.

At the top of the opening screen is theMenu Bar. The menu bar gives access tovarious functions. These functions are du-plicated on the Toolbar (with the exceptionof “Language”), and through keyboard keycombinations.

The toolbar consists of graphic icons al-lowing you access to various functions.Holding the mouse pointer over any of theicons will give you a “tool tip” describing thefunction of the icon. The horizontal sliderat the far right is the main level control (orMain Fader). The level may be changed fromthe main screen by placing the cursor over

the slider, holding down the left button andmoving the mouse.

Below the toolbar are tabs for accessingvarious operational modes. These tabs willbe described in order from left to right.

7.3 Profile Screen.On the first tab, there are several windowsfor entering information about your systemand peripheral equipment. This informa-tion is stored in the JSD-80 and also canbe stored on the computer or the deviceused to set up the unit. This informationis not used by the unit functions but canbe extremely valuable to technicians forthe purposes of repair and re-alignment orin case of the necessity of a factory repair.You can enter this information at any time,whether connected to the JSD or not andsave it to disk for eventual loading onto theJSD. The “Component Information” boxesare filled in at the factory and are not edit-able by the end user. At the bottom right ofthe tab are the connection status bar andthe format status bar. No matter which tabyou are working in, the format status barwill always indicate in which format the

processor is currently operating. Note: When the computer is connectedto and controlling the JSD-80, the front

panel controls will not function, with theexception of the Mute button.

Section 7: JSD-80 Interface Software


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7.4 Formats Screen.This is where you set the processor’s modeof operation. Anyone familiar with the op-eration of a motion picture venue shouldalso be familiar with the above formats.Any of the formats may be designated the“Power On” format which means that whenthe power is turned on, the processor will

“wake up” in that mode. The Non/Sync andAux inputs have the option of being eitheran analog or S/PDIF input. The Mic inputcan be routed to either the center or thesurround channels. The fader at the left ofthe window allows you to pre-set the levelof a particular mode. The master level willfollow that setting. When you go to anothermode and set its level to whatever youdesire, upon your return to the originalmode, the level will be the same as youleft it. Along with the standard “Power On”choices, which are visible in all format selec-tions, a “Digital Fallback” selection appearswhenever you select Ext 2 (Digital). This al-lows you to select a mode to automaticallydefault to, should the digital track becomeinterrupted for any reason. A Digital Delaybutton (which brings up a separate screenon which you can set input and surrounddelay) also becomes visible in Ext 2 mode aswell as when S/PDIF is selected in either theNon/Sync or Aux formats. See Section 8.8.

7.5 Inputs Screen.There are two sections. The first section is the Preamp Controls sec-tion and contains buttons to select eitherProjector 1 or 2 level settings for the Leftand Right preamps (with accompanying

level indicators), Slit EQ & Mono EQ and theSlit EQ Analyzer screen which is dealt within detail in Section 7.8. This tab is where thealignment is accomplished for the opticalpreamp (A Chain), and is vital for accurateoptical performance.The second section is a matrix controlssection for setting the delay & gain of thesurround channel, and the gain & frequencyof the subwoofer. The level functions areaccessed by placing the pointer over the

desired slider’s button, holding down theleft mouse button and moving the mouse.Note that when a slider is selected, it is high-lighted and will stay that way until anotherslider is selected. The sliders (once they areselected) also may be manipulated by usingthe up or down arrow keys; the left/rightarrow keys will select the sliders on the leftor right of the one initially chosen. At thebottom of the slider is a box that states nu-merically the position in dB of the slider.

7.6 Equalizer Screen.

This is used for all equalization of the au-ditorium. With the radio buttons, you mayselect the channel to be equalized. Thechannels consist of Left, Center, Right, LeftSurround, Right Surround, Subwoofer andtwo additional channels. (Note: When you

select Subwoofer, a separate screen appears containing a Sub Bass Parametric EQ.)

The sliders also will respond to the push of


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7.8 Slit EQ Analyzer ScreenTo the right of the Preamp Level Faders is ascreen with annotations on the bottom andleft side and buttons at the top. This is theReal Time Analyzer built into the JSD-80.You must be connected to the JSD-80 andit must have a signal source before it canbecome functionally effective. Move the

mouse arrow over one of the buttons anda pointer appears. Click the “Power” buttonand a line appears across the screen. Youcan utilize the Real Time Analyzer in the fol-lowing ways: utilizing the third button fromthe top left, you can select either Normal orSum & Diff. In the “Normal” mode, you havethe option of selecting (with the second topbutton), either Left, Right, or Left + Right. Inthe Sum & Diff mode, you can select (withthe second top button), either Sum, Diff orSum + Diff. You can view the performance of

the left channel and right channel, Sum orDiff as either bars or lines. On the left handside of the screen are gradations measuredin decibels. As you can see, they often ex-tend below the level of the screen. Movingthe mouse pointer over these gradationsand holding down button one, a pointerappears once again, with an accompany-ing arrow. You can move the numbers andthe screen up to view the signal, down to alevel of -50 dB and up to +20 dB if so desired.

Double click on the screen and it expands toa larger representation that can be seen at agreater distance. The larger screen can thenbe maneuvered on the computer’s screen toaccess controls.

an “up” or “down” arrow key and, for everypush, the level will change .1 dB. Clickingon the button labeled “Flat” will restore allslider settings to the mid point and will warnyou (if you accidentally hit it) before actingon the command.

Note: If a channel should appear high- lighted in red, it indicates that thechannel has been muted on the Outputs

Screen (see Section 7.7).

7.7 Outputs Screen.This is where, during the alignment process,the output levels are set for the variouschannels. A signal generator is availablewhich can be set to four different modes.To select the particular generator function,choose the function with the radio buttonson the bottom of the screen. To assign aparticular channel to receive generatoroutput, a box is available below the slider.These boxes may also be utilized to Muteor Invert the channel. The faders change in0.5 dB increments.

Note: When using the generator, the default mode allows one active channel ata time. Holding down the keyallows selection of multiple channels forthe generator (e.g., center and subwooferchannels).


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7.9 Creating, Saving andLoading Configuration Files

Use the “New” command to create a cus-tom configuration file starting with factorydefaults.Use the “Save” or “Save As” command to

save your custom configuration file to thehard disk.You may load a previously saved file by us-ing the “File,” “Open” command and select-ing the desired configuration file. If you areconnected to the unit, the parameters willbe automatically uploaded.(See also: System Restore From PersonalityModule, Section 10.4.)Please take the time to familiarize your-self with the laptop interface controls andscreens. Next establish communication withthe JSD-80 using a standard RS232 cable. Se-lect the “Connect” icon on the toolbar and, ifeverything is as it should be, the computerwill connect with the JSD-80.

When you first accessed the JSD software,the small window in the lower right handcorner of the main window looked likethis:

Once you connect to the JSD, the computerwill download all the data stored on theJSD-80 to the laptop’s memory. This datacan consist of Preamp Parameters, EQParameters, Front Panel Parameters andProfile Information. Once that action has

taken place, the small window will changeto this:

You are now ready to set up the JSD-80.If you are setting up the JSD-80 for the firsttime, you may want to fill in the particularsof the venue in the “Theatre Information”boxes provided in the Profile tab. They

may be filled in and edited like a normaltext file.The “Component Information” boxes arefilled in at the factory and are not editableby the end user.

Note: As stated previously, this infor-

mation is not functional insofar as theoperation of the processor is concerned,but can aid you greatly in future endeav- ors.

At any time during the Profile entry orsetup procedures, the information fromthose tasks may be saved to the laptop’shard drive or other convenient data storagemedium by utilizing the “Save” function andproviding a path and file name.After completion of the alignment proce-

dure (see Section 8), the complete systemconfiguration may be saved to the laptop’shard drive or other data storage medium byutilizing the “Save” function and providinga path and file name.


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8.1 Preparing The Sound Head1. Clean the soundhead optics thor-

oughly. If the film guide rollers areworn, replace them. Excessive side toside weave will cause insurmountableproblems for the stereo circuitry and

must be corrected prior to installa-tion.

2. If the exciter lamp is old or blackenedinside, replace it. Make sure the lamp isoperating at a voltage greater than 60%of its rating. We strongly recommendconverting the projector to be compat-ible with the new cyan soundtrackswith a red LED lamp source such asan ULTRA*STEREO Jaxlight or RSTRReverse Scan Reader.

3. With the mono solar cell in the projec-tor, run the SMPTE BUZZ TRACK filmand align the guide rollers for mini-mum output.

4. For stereo installations, remove themono solar cell and place a white cardabout an inch away from the soundlens. The image of the exciter lampfilament should look as in the illustra-tion below. If necessary, raise or lowerthe lamp and move it in and out until

the filament is centered in the spot oflight. This will insure that the slit isevenly illuminated, thereby producingthe least distortion in playback.

8.2 Alignment of Solar Cell andPreamplifier

1. Mount the stereo solar cell on the pro-jector and position the bracket, so thatthe slit image hits the upper part of thecell. The cell should be approximately0.040 inch (1 mm) behind the film suchthat the slit image just fills the cellwidth, but does NOT spill over.

2. Install the audio line from the cellto the JSD-80. Use Belden Nº 8404or equivalent four-conductor twin-shielded cable, or a pair of two-con-ductor shielded cables such as BeldenNº 8451. (A single two-conductor orthree-conductor shielded cable is notrecommended.) Connect the lines toa 9-pin male D-type connector. The

pinout for this connector is in Sec-tion 12. Be sure that the RED lead ofthe cell is connected to the “L” inputterminal marked “+” and the GREENlead of the cell is connected to the “R”input terminal marked “+.” The BLACKcell leads connect to the low “-” inputterminals of BOTH Left and Right chan-nels respectively.

Section 8. “A” Chain Alignment


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Connect the shielding of the cable tothe Chassis terminal (pin 3). Do notconnect the shielding at the projec-tor end. The D-9 connector should beplugged into the Projector 1 input ofthe JSD-80.

3. Film readers with active circuits, suchas a Jaxlight line amplifier or a reversescan reader, will require a ground con-nection at the reader. Good results canbe achieved using the drain (shield)wire of the cables listed above, how-ever, some agencies (such as CE)prohibit using the drain conductorfor this purpose. In that case, use two3-conductor shielded cables (such asBelden Nº 9939) (see Section 6.1).

4. If there are two projectors, the change-over is accomplished by grounding the“X-OVER” terminal. Connect a latchingrelay, with the appropriate rating, sothat one coil is powered by the dowsercircuit of Projector 1 and the othercoil is powered by the dowser circuitof Projector 2. The relay contactsmust be connected to the “XO” and“COM” terminals so that the contactsare closed when Projector 2 is opera-tional.

5. Set the JSD-80 preamp controls sothe gain is at the midpoint and thehigh frequency boost filters are at themaximum frequency (32 kHz). This canbe accomplished from the JSD LaptopInterface Software. Connect a dualtrace oscilloscope to the test pointson the JSD-80 “Input Module” board.“Left” is RED, “Right” is GREEN, and“GND” (Audio ground) is BLACK. Runa 100% alternating left/right STEREO

ALIGNMENT film and move the cellin and out until the crosstalk is at aminimum on both channels as shown.It may be necessary to set the gain ofthe preamp roughly at this time.

6. Run a 50% level film such as the Cat69T or equivalent. Adjust the Left andRight level controls on Projector 1until the preamp calibration LEDs onthe input screen show two green indi-cator lights. Repeat the procedure forProjector 2 if applicable.

7. Double check the cell alignment byrunning a 100% STEREO ALIGNMENTfilm. The amplitude of the two 100%

modulated waveforms should be iden-tical (see illustration). If one is greaterthan the other, while the modulatedwaveforms of the 50% level film areidentical, there is a problem with thescanning beam. Either the slit is notuniformly illuminated along its length,or the scanning beam is not in perfectalignment with the film guide rollerand solar cell. Since most soundheadoptics cannot be moved in or out, it


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will be necessary to reposition thefilm guide roller and realign the solarcell, so that both the 50% and 100%modulated tones match from channelto channel. When this fine alignmentis not done, loud sounds (above 50%modulation) will be distorted and willleak into the surround channels.

8. Using the built-in Slit EQ Analyzer,run a pink noise test film (Cat 69P orequivalent). Adjust the focus of thesoundhead optics for the best highfrequency response on the analyzer(see below). At the same time, adjustthe azimuth for the thinnest displayon the oscilloscope. The focus and azi-

muth adjustments interact, so it will benecessary to keep adjusting both untilthe best combination is achieved.

9. Using the built-in SLIT EQ Analyzeradjust the SLIT EQ slider until the re-sponse is flat to 12 kHz +/- 1 dB.

8.3 Sum and Difference mode.No Oscilloscope required.When running a Cat 69P Pink Noise loop onthe projector, precisely adjust the left andright projector gains so the red and greenlines on the slit analyzer overlap.Click “Normal” on the Slit EQ Analyzer. Thebutton designation changes to “Sum & Diff.”Adjust the projector sound head so the twographs are roughly parallel.

The top graph is controlled primarily bythe focus of the reader. The bottom graphis controlled primarily by the azimuth.First, the focus must be adjusted to achievethe best high frequency response for thetop curve.

Most likely, the bottom graph will risequickly at high frequencies. Carefully rotatethe sound lens or reader until the curve ishorizontal.

Note: It is a bit of a juggling act to keeprotating the reader and focusing it toachieve the best high frequency responseon the top graph and the most horizontalresponse on the bottom graph.


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The graph below shows a reader with anazimuth error. The rising lower curve showsthe phase difference between left and rightchannels. This is similar to a lissajous pat-tern on an oscilloscope where an ellipse in-dicates a poor alignment. The oscilloscopepattern is actually less accurate than the

difference display. In the lissajous pattern,all the frequencies are added together so aphase difference at 20 kHz is less obvious.The difference display on the RTA shows thephase difference at each frequency.

8.4 Mono EQ and Bypass Level

1. Click on the INPUT tab and selectMONO format. Thread a pink noiseloop on the projector. Using the SLITEQ Analyzer, adjust the MONO EQ untilthe above curve is achieved.

2. Set the bypass level by adjusting trim-pot (1) until the voltage on the bypass

level test point (8) reads 300 mV rms.Repeat the procedure for Projector2 using trimpot (2). When the JSD-80power switch is in the “off” positionand the emergency backup powersupply is present the main fader willcontrol the bypass level.

8.5 Optical Surround Gain andDelay

1. Click the INPUTS tab and thread a

Dolby Cat 151 test film on the projec-tor.

2. Mute the screen channels and, usingan RTA or SPL meter, adjust the SURRGAIN in the MATRIX CONTROLS sothat the SPL level in the back matchesthe SPL level in the front. The SURRDELAY slider should be at 10 ms.

3. Calculate the surround delay by usingthe following formula:

Length of theatre - (width of theatre/2)+20 = Delay in ms

4. Set the SURR DELAY control accord-ingly.

8.6 Optical SubwooferSee Section 9.5

8.7 Analog Non-Sync, AUXLevels, MIC Levels

1. Set main fader to 7.0. Connect the

sound source to the NON-SYNC L andR RCA jacks. Click on the INPUTS tab.Select the NON-SYNC format. Adjustthe left slide pot and both channelswill change. The master fader shouldbe set at 7.0.

2. Set main fader to 7.0. Connect thesound source to the AUX L and R RCAjacks. Click on the INPUTS tab. Selectthe AUX format. Use the main left and


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right sliders outside the Preamp Cali-bration box to set the AUX level.

3. Connect a microphone to the DB-9connector (pins 1+ and 2- with shieldon 5). If the microphone is an electrettype that requires 5 to 9 V DC you mayuse pin 7 on the DB-9 for that power(see Section 12). Click on the Inputstab and select the MIC format. Adjustthe left slide pot and both sides willchange.

4. Select the Formats tab and select Mic.Click the appropriate radio button todirect the Mic to center or surroundchannels.

8.8 Optional Digital Non/Sync,Digital Aux & Digital Eight-Channel inputs

Note: For these inputs to be active, the

optional DI83 Module must be installedin the processor.

In the Format screen, select Non/Sync.“Input Type” will appear next to the formatlevel slider. By selecting S/PDIF, a digital bitstream can be fed into the processor.

Note: The system supports either ananalog or digital input for Non/Sync butnot both.

Typical input signals could be the digitalcoax output of a CD player, the digital coaxoutput of a DVD player or a computer soundcard. These outputs are typically “Orange”RCA jacks.The processor also supports a S/PDIF Inputin the Aux format.

Note: The system supports either ananalog or digital input for Aux but notboth.

When selecting S/PDIF, the Digital Delay boxwill appear below “Input Type.” Since thereis only one digital delay for AES/EBU, and S/PDIF inputs, setting this will affect all threedigital inputs; (Ext 2, Non/Sync and Aux),the range is 0-100 ms input delay, 0-127 msSURR delay.

The processor will accept stereo or AC3data and decode 5.1 channels. The pro-cessor does not support DTS consumerbitstreams.As with the AES/EBU input, if a fault occursin the S/PDIF bitstream, the processor willmute. There are no emergency fallback for-mats for the S/PDIF inputs.

Note: For the AES/EBU inputs to be active, the optional AES/EBU module, DI83,must be installed in the processor.

The “EXT 2” digital domain input is config-ured for eight channels (four differentialAES3 PCM data pairs with any sample ratefrom 32 to 96 kHz) See Section 12 for con-nector pinout specifications.Any AES3 PCM channel format ID bits (suchas Pro/Consumer, Pre Emphasis, etc.) areignored. If there is a fault in the AES/EBUdata stream, the system reverts to a pre-selected emergency mode. This will occurif the AES/EBU word clock is lost or if the

processor detects “non PCM” Data.


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To set the emergency digital fall back screenon the laptop interface, select “EXT 2” for-mat. A box labelled “Digital Fallback” willappear. Simply select the emergency formatdesired. Selecting “EXT 2” will keep the pro-cessor in that format even though the audiomay be muted. When the AES/EBU data is

restored, the system will un-mute and con-tinue to operate in the “EXT 2” format.

8.9 Digital Time DelaysWhen “EXT 2” is selected, a box labelled”Digital Delay” will appear. The “Input De-lay” slider controls the overall time delayrequired to compensate for various videoprojectors. For example, a typical DLP pro-jector requires about 80 ms delay. Consultyour video projector manual for the exactdelay required. The second slider controls

the delay for the surround channels. Thesurround delay should be set by the follow-ing formula:Length of theatre - (width of theatre/2) + 20= Delay (in ms)

Note: After you are satisfied with the AChain settings, you will want to savethem to the unit. Refer to Section 9.5 fordetails.

Note: When the computer is connectedto and controlling the JSD-80, the front

panel controls will not function, with theexception of the Mute button.


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9.1 Channel ConfigurationSelecting “File” in the menu bar will producea drop down box. Click on “Input Configura-tion”.

The processor supports either five screenchannels or “Ex” back surround channelsbut not both.Select the appropriate configuration andclick “OK”.

Note: This configuration will affect theequalizer and format panels.

9.2 Headroom SettingsSelecting “File” on the menu bar will pro-duce a dropdown box. Click on “HeadroomAdjustment”.

Select one of the three settings. Generally,26 dB of headroom is sufficient providedthere is not more than 6 dB total boost be-tween bass and low frequency 1/3 octavefilters or between treble and high frequency1/3 octave filters. For instance, if the bassslider is set at +3 dB and any of the 1/3 oc-tave eq bands from 40-125 Hz are boostedmore than 3 dB, the headroom will be com-

promised.Selecting 29 dB headroom would allow a full6 dB bass boost plus up to +3 dB boost inany of the 40-125 Hz bands.In each case, it is the total boost that im-pacts the headroom. For 26 dB, the maxi-mum boost is 6 dB; for 29 dB, the maximumboost is 9 dB; for 32 dB, the maximum boostis 12 dB.

9.3 Main ChannelsLeft, Center, Right, Left Surround, Right Sur-round, (Left Center, Right Center or BackSurround Left, Back Surround Right).Before proceeding with the room equaliza-tion it is imperative that the loudspeaker

and crossover systems be properly aligned.Issues like speaker phasing and horn tiltneed to be checked. When using crossovers,the low, mid and high frequency driversmust be balanced to produce a relativelyeven response from 100 Hz to 5 kHz.

1. Set up an external REAL TIME ANA-LYZER or the internal JSD-80 REALTIME ANALYZER with the microphonetwo-thirds of the way back and one-third of the way in from the side of the

auditorium. If a multiple microphonesystem is being used (such as the USL,Inc. MMP-10), set up the microphonesaccording to the instructions providedwith that system. Set the MAIN FADERto “7.0.” Access the channel outputcontrols on the Output panel on theJSD-80 Laptop Interface Software.

When aligning the auditorium for thefirst time with the JSD-80 Laptop Inter-face Software, it is recommended toset all the channel gains to minimum,click the ”Pink Noise” radio button

in the Signal Generator box, click the“Pink” checkbox under the left channelslider, then exit the Output Screen tothe Equalizer Screen for the frequencyalignment.

Note: When using the generator, the default mode allows one active channelat a time. Holding down the control keyallows selection of multiple channels for

Section 9 “B” Chain Alignment


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the generator (e.g., center and subwooferchannels).

To use the internal JSD-80 REAL TIME ANALYZER, connect the microphone tothe MIC input on the JSD-80. (See Sec- tion 12 for connector pin-outs.) With the

pink noise generator turned on and theequalizer screen displayed on the laptop,

select the inputs screen. Note that the MIC input is selected. The auditoriummicrophone can be adjusted by using the

MIC gain slider. Double click on the REALTIME ANALYZER screen. A new windowwill open. Slide the window to the bottom of the laptop screen. Now select theequalizer tab and move the screen abovethe REAL TIME ANALYZER display.

2. Slowly raise the level of the left channelpower amplifier to its full on position.Now, slowly raise the gain slider untilthe SPL Meter indicates approximately85 dB SPL (82 dB SPL for the surroundchannels).

3. Adjust the equalizer sliders until theresponse shown is obtained. Pleasenote that once a slider is selected witha mouse click, the cursor pad up/downkeys will adjust the slider. The left/rightkeys will select the adjacent 1/3 octaveslider. Use the bass and treble slidersto achieve the overall shape of theauditorium response. After making the

EQ adjustments, it may be necessaryto fine-tune the output level setting.

4. Repeat the tuning procedure for thecenter, right and additional channels.The JSD-80 includes a copy feature thatminimizes the time required for this.

After equalizing the left channel, copy thesesettings to the center and right channels.Since all three front speakers are usuallysimilar, if not identical, the EQ settings willbe a close starting point. Similarly, afterequalizing the left surround, copy thesesettings to the right surround channel.

9.4 Subwoofer ChannelThere are three separate subwoofer signalsin the JSD-80. One subwoofer signal is cre-ated by summing the LT and RT channelson the two-channel input card. This signalhas its own adjustable low pass filter and+/- 6 dB gain trim. The second subwoofersignal is a discrete input on the analog eight-channel connector. The third subwoofersignal is a discrete input on one of the digitalAES-EBU pairs. All the above signals passthrough the main subwoofer parametricequalizer and channel gain.

1. Using the Equalizer Screen, select theSubwoofer channel radio button. Makesure the gain is set at the minimum,-22 dB. Slowly raise the power ampli-fier gain to maximum. Raise the chan-nel gain slider on the JSD-80 softwareuntil the Subwoofer signal reachesroughly the same point as the centerchannel on the RTA.


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2. Study the Subwoofer response on theRTA. The parametric will allow you tosmooth the dips or take out bumps inthe response from 20 to 100 Hz. Adjustthe FREQ slider to the same frequencyas the peak. Set the Q control to about4. Adjust the equalizer gain until re-sponse becomes flatter at the selectedfrequency. Adjust the Q control towiden the effect of the equalizer toachieve the best, flattest response. Itmay be necessary to slightly readjustall the three controls until the bestresults are achieved.

3. Select the output screen and selectboth the center and subwoofer pinknoise by holding down the “Ctrl” keyand checking the boxes. The subwoof-er should fill in the lowest frequencies

and create a smooth overall responseon the RTA from 25 Hz to 1 kHz. It maybe necessary to adjust the subwooferchannel gain. It also may be neces-sary to click to phase invert on thesubwoofer to be sure that the low fre-quencies of the center and subwooferare adding rather than subtracting.Set the final subwoofer level so thatits horizontal display (20-100 Hz) is

10 dB ABOVE the horizontal display ofthe center channel on the REAL TIMEANALYZER.

9.5 Optical Subwoofer1. Once the subwoofer channel is equal-

ized and the level set, it is time to trim

the optical subwoofer parameters.2. Turn off the pink noise generator.

3. Thread a pink noise loop Cat 69 P orequivalent on the projector and selectmono.

4. Set the optical subwoofer frequencyto 50 or 60 Hz.

5. Using the auditorium microphone notethe level of the pink noise from thecenter channel.

6. Adjust the optical subwoofer gain sothe subwoofer output is on the samehorizontal line as the center channelon the REAL TIME ANALYZER.

9.6 Saving Settings AfterAlignment

After completing the alignment, the con-figuration you have setup should be savedto the onboard DSP Flash RAM. To dothis, choose the Disconnect icon from thetoolbar or Disconnect from the Communi-cation menu.

You will be prompted with the followingscreen providing several save options.

Clicking “Yes” will save your current set-tings to the JSD-80 and then verify that theywere correctly saved to the unit. Choosing“No” will keep you connected to the JSD-80


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unit allowing you to make more modifica-tions if needed. Choosing “Do Not Save”will disconnect from the unit and disregardall changes made for the current session.The unit will continue to retain the currentsettings until power is removed then theprevious configuration will be used.

Checking the “Save to Personality Module”will save a backup of the entire unit configu-ration to the unit’s Personality Module. Thepersonality module will provide a backuprestore option in case of catastrophic pro-cessor failure. Make sure a PersonalityModule is present in the JSD-80.

Note: It is essential that when writingto the Personality Module, the Write Pro- tect Switch is in the “OFF” (left) position.Once the parameters are saved, however,

it is equally important that the switch bereturned to the “ON” position.

Having a backup copy of all settings in thePersonality Module permits loading a copyof all settings into a new replacement mod-ule without the need for a computer andtechnician.


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10.1 Preset Format LevelsClick on the FORMATS tab. Select the formatof interest. Adjust the “Format Level” on thispanel to an appropriate setting.

Note: When changing levels in EXT 1 or

EXT 2, remember to also change the Ste- reo SR level the same amount.

10.2 Startup Mode

Select the default startup mode from the listshown. Selecting NON-SYNC will cause theunit to “wake up” in non-sync every time itis powered up. Choosing “Last Selected” willcause the unit to resume its last operationalformat before it was powered down.

10.3 Remote Fader

1. The remote fader function can beaccomplished with a simple pair ofnormally open switches. One buttonincreases levels, the other decreaseslevels. The LED display on the JSD willindicate the change in discrete steps

limited to 4.0 - 9.0.

10.4 System Restore

1. In the event of a catastrophic systemfailure, you may install the last con-

Section 10: Other Options

figuration saved to the PersonalityModule (1). If the control card is themodule that has failed you will needto remove the Personality Modulefrom it and insert it into the replace-ment control card from USL. If theinput or output card has failed, yousimply need to replace the failed onewith a new module from USL. Oncethe replacement module is installed,you will hold down the restore button(4) as you power up the system. Holdthe restore button until the “Restore”LED (5) begins to flash. Within thirtyseconds, the “Restore” LED (5) stopsflashing, the system is restored. Turnoff the unit, wait 60 seconds and turn

it back on. This procedure will restorethe system without the need for a lap-top or technician.

Note: If you are replacing the controlmodule as a part of the repair process,remember to remove the Personality Mod- ule from the defective card and insert itinto the replacement control module.

10.5 Format Options

This feature allows the technician to changesome of the Format button/automationfunctions. By clicking on the Format Op-tions box on the Formats tab on LaptopInterface Software the options are displayedfor each of the Format selections.


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The MONO, STEREO A, STEREO SR buttonscan be configured with the following noisereduction options: “None,” A Type, SR Type.The same buttons can also be configuredwith the following matrix decoding options:“5.1 Stereo,” “2.0 Stereo,” or “Mono.” The 5.1stereo option is the default setting. The 2.0

stereo option is for either Left/Right stereoor Center/Surround systems.

The EXT 2 button can be configured eitherfor “AES-EBU” (Digital) or “Analog” inputs.

10.6 Wiring for an ElectretMicrophone

An Electret microphone can be connectedto the JSD-80 using a DB-9 male plug asshown below.


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Reset circuit breaker or replace fuse.

Make sure power cord is firmly seated.

Replace Fuse - SLO BLO 500 mA, 250 V

Make sure amplifiers are operating and volumecontrols are up.

Switch change-over to operating projector.LED lights on the Input Module indicate whichprojector is in use.

Replace bulb or repair exciter supply.

Make sure the solar cell is illuminated andclean. Use compressed air. DO NOT USEORGANIC SOLVENTS OR ALCOHOL.

Make sure the Input Module’s indicatorLEDs are flickering with program material.If not, there is a problem with the solar cell,the wiring, or the Preamp. If indicator LEDsare flickering, the problem is most likelythe unit wiring, the power amplifiers, or theloudspeakers.

If sound comes out of the three front speakers,then the problem is in the JSD unit. If there isno sound, the problem is somewhere else.

If the channel or channels are still dead, theproblem is an amplifier, speaker, or wiring. If allfront channels work, then the problem is in theJSD unit.

Check different formats to determine if only one

format has a problem. Refer to later section inTROUBLESHOOTING.

Replace speaker fuse or main fuse. Replaceamplifier.

Speakers are often series-connected, so if onefails they all will not work.

If NON/SYNC MUSIC plays but the STEREO doesnot, there is a problem in the soundhead wiring.

PROBLEM CHECK SOLUTION

Power source

Power cord

Power supply fuse

Power amplifiers

Change-over

Exciter lamp

Stereo solar cell onprojector

LED indicators onthe INPUTand OUTPUTmodules

Turn off main

power switch toput unit in BYPASSmode. Note: Thismode puts soundin all three frontchannels.

Turn off main powerswitch to put unit inBYPASS MODE.

Press other Formatswitches.

Power amplifier

Speakers or wiring

Section 11: Troubleshooting

SOUND SYSTEMDOES NOT WORK

and no LEDs are lit onthe Front Panel.

SOUND SYSTEMDOES NOT WORK and+5 V and +/-12 V LEDson the Front Panel arelit.

Note: the Backup Pow-er LED should be lit toindicate operation of theBackup Supply.

NO SOUND IN ONEOR MORE FRONTCHANNELS

NO SOUND INSURROUNDCHANNEL


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Power amplifier orspeaker

Press several formatbuttons

Try NON/SYNCMUSIC

STEREO mode

Exciter lamp

Stray light pickup atthe solar cell on theprojector

PREAMP Module

Wiring between theprocessor and poweramplifiers

INPUT module

LED indicators onINPUT module

Try to determine if distortion is in one orall channels. If distortion is one channel,exchange power amplifiers or speaker linesto locate problem.

Try to determine if one or all formats aredistorted.

If MUSIC is not distorted, the problem isin the input module or the SOLAR CELLalignment.

If there is distortion only in this mode thenthere could be a problem in the input module.

Make sure correct lamp is used. There arevertical and horizontal versions of manyexciter lamps. Soundhead misalignment cancause distortion.

Eliminate source of stray light.

Eliminate cause of hum ground loops, badexciter lamp supply, JSD unit located toonear hum field from power amplifier or

another piece of equipment.

The Input may have some high frequencyoscillation. Check the Solar Cell wiring. Makecertain that the lines are not routed too closeto the Power Amplifier or Loudspeaker wiring.It may be necessary to re-route the cell lines.If in doubt remove wires from the backboardand short the input. If this does not solve theproblem, replace the Input module.

If only the left or right LED indicator is lit with

program material, check the projector wiringand input module.


SOUND ISDISTORTED

HUM IN ALLCHANNELS

BUZZING SOUNDIN ALL CHANNELS,MAINLYTHE SURROUNDS

STEREO MODE-SOUND FROM LEFTOR RIGHT CHANNELONLY


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Soundhead azimuthalignment and/orpreamp level and

high frequency boostsettings

Soundhead guiderollers

Output module

Soundhead alignment

Computer PowerPack

Connection ofExternal AES-EBUdevice

Make sure all cardsare firmly seated.

Re-adjust soundhead azimuth and resetpreamp levels and high frequency boost withtest film.

Make sure the soundhead guide rollers arenot loose and do not have any end play.Some rollers are spring-loaded on one side.Make sure the fixed side is not loose.

Surround levels are set too high. Reset SPLlevels.

The solar cell is too far back. Move it to within.040” (1 mm) of the film and readjust.

Lift power ground on Computer power packor run computer on battery power.

When the Word Clock is missing on theLeft/Right channel pair, the front LED willflash, indicating a fault of the external device.It will also flash if there is no external deviceconnected to EXT 2. Check the wiring andfunctionality of the external device.

Make a note of the numbers that appearin the main fader display. Put the unit into

BYPASS to prevent possible loudspeakerdamage. The flashing LEDs mean thatsoftware corruption has been detected. A“91,” “92,” or “93” is a software fault in theInput Module (JSDA80). A “61,” “62,” or“63” is a software fault in the Output Module(JSDO80). Have the technician replace thedefective module and follow the SystemRestore in Section 10.4.


STEREO MODEDIALOG IS LEAKINGINTO THE

SURROUNDS

STEREO MODESURROUNDS AREEXTREMELY LOW

BUZZING IN SYSTEMWHEN CONNECTINGLAPTOP

EXT 2 LED FLASHES

ALL THE FORMATBUTTON LEDS

FLASH AND NUM-BERS APPEAR INTHE MAIN FADERDISPLAY


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RS232 (DB-9F)1. Reserved2. TXD Transmit Data3. RXD Receive Data4. Reserved5. Signal Ground6. Reserved7. CTS Clear To Send8. RTS Request To Send9. +5 V for Bluetooth Adaptor

Automation (DB-25F)1. Mono pulse2. Stereo pulse - A Type3. Stereo pulse SR4. Aux pulse5. External 1 - Analog6. External 2 - AES/EBU7. Non-Sync pulse8. Mic pulse9. Reserved

10. Mute Pulse11. Reserved12. Automation Return13. +5 V DC14. Mono LED15. Stereo A LED16. Stereo SR LED17. Aux LED18. Extl. 1 LED - Analog19. Ext. 2 LED - AES/EBU20. Non-Sync LED21. Mic LED22. Reserved23. Mute LED

24. Reserved25. Projector Changeover

Monitor Output (DB-25M)1. Chassis Gnd2. Out L +3. Out LC -4. Chassis Gnd5. Out C +6. Out RC -7. Chassis Gnd8. Out R +9. Chassis Gnd10. Out LS -11. Out RS -12. Out SW -13. Chassis Gnd14. Out L -15. Chassis Gnd16. Out LC +17. Out C-18. Chassis Gnd19. Out RC +20. Out R -21. N/C22. Chassis Gnd23. Out LS +24. Out RS +25. Out SW +

Ext 1 - Analog (DB-25F)1. Analog Gnd2. In Rs3. Analog Gnd4. Analog Gnd5. Analog Gnd6. Analog Gnd6. Analog Gnd

7. Analog Gnd8. Analog Gnd9. Analog Gnd10. Analog Gnd11. Analog Gnd12. Analog Gnd13. Analog Gnd14. In L15. In Ls16. In Rc17. In R18. In Lc19. Analog Gnd20. In C

21. Reserved22. Analog Gnd23. Analog Gnd24. In SW25. N/C

Ext 2 AES/EBU (DB-25F)1. L/R/ Return2. L/R -3. Ls/Rs +4. C/SW Return5. C/SW -6. Lc/Rc +7. Chassis Gnd8. N/C9. Chassis Gnd10. N/C11. N/C12. Chassis Gnd13. N/C14. L/R +15. Ls/Rs Return16. Ls/Rs -17. C/SW +18. Lc/Rc Return19. Lc/Rc -20. Chassis Gnd21. N/C22. N/C23. Chassis Gnd24. N/C25. N/C

Projector Inputs (DB-9F)1. In L+2. In L-3. Chassis Gnd4. In R+5. In R-6. Analog Gnd7. Reserved

8. Reserved9. Analog Gnd

Mic Inputs (DB-9F)1. Mic in +2. Mic in -3. Reserved4. Reserved5. Chassis Gnd.6. N/C7. 9 V8. Analog Gnd.9. N/C

Section 12: AppendixConnector Pinouts


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Section 13: Installation Check ListB CHAIN ALIGNMENT

1. Select Lc/Rc or Bsl/Bsr channel op-erating mode in the File menu of theInterface Software.

2. Set Headroom (26 dB is normal). Olderspeaker systems may require 29 dB.

3 Equalize front channels and set SPLlevels (85 dB) using the Equalizerscreen.

4 Equalize surround channels and setSPL levels (82 dB) using the Equalizerscreen.

5 Equalize subwoofer channel and setlevel 10 dB above the horizontal cen-ter channel display on a Real TimeAnalyzer measuring the auditorium.

A CHAIN ALIGNMENT-Projectors1 Set Projector levels using 35mm 50%

tone film Use the Inputs screen on theInterface Software.

2 Set BYPASS levels using 35mm 50%tone film (measure 300 mv at test point8).

3. Set Projector high frequency responsewith 35mm pink noise film.

4. Set MONO high frequency responsewith 35mm pink noise film.

5. Set SUBWOOFER level and frequencywith 35mm pink noise film (the sub-woofer level in MONO should line uphorizontally with the center channeldisplay on the RTA measuring the au-ditorium).

6. Set SURROUND level with 35mm front/back pink noise film.

7. Set SURROUND delay based upon au-

ditorium size.

A CHAIN ALIGNMENT-Other inputs

1. Set Non-Sync level on the Inputs screenof the Interface Software or select Non-Sync S/PDIF

2. Set Aux level or select AUX S/PDIF onthe Inputs screen.

3. Set Mic level on the Inputs screen.

4. Set EXT 2 and S/PDIF main and sur-round delays for a video projector onthe Formats screen.

5. Set EXT 2 fallback format on the For-mats screen.

6. Set Mic center or surround position onthe Formats screen.

FINAL SETTINGS

1. Set all FORMAT levels on Formatsscreen of the Interface Software.

2. Set Startup format on the Formatsscreen.

3. Test Remote Volume panel if one isinstalled.

4. Save settings to a file on the computerrunning the Interface Software.

5. Save settings to the JSD-80.

6. Turn off the Write Protect Switch andsave setting to the Personality Modulein the JSD-80. Turn on the Write Pro-tect Switch.

JSD 80 Manual

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