Usl JSD-80 User Manual

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USL, Inc.

JSD-80 Instruction Manual

Page 1

3rd Edition. February, 2006

1. Introduction

....................................

3

1.1 Safety notice

1.2 Unpacking

1.3 The JSD-80 Overview

1.4 Technical Speciﬁ cations

1.5 Certiﬁ cations

2. Installation

......................................

9

2.1 System Hardware Mounting

and Grounding

2.2 System Cooling and Ventila-

tion

3. Block Diagrams

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10

3.1 Audio Block Diagram

3.2 Two-Channel Analog Inputs

Block Diagram

3.3 Eight-Channel Input Block

Diagram

3. Control Block Diagram

4. System Modules

...........................

14

4.1 Input Module

4.2 Output Module

4.3 Control Module

5. Front Panel

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15

5.1 Overview

5.2 Adjusting Format Levels

5.3 Adjusting Projector Gains

6. Back Panel

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16

6.1 Rear Wiring Diagram

6.2 Back Panel Input Connec-

tions

6.3 Back Panel Signal Output

Connections

6.4 Other Back Panel Connec-

tions

7. JSD-80 Interface Software

............

19

7.1 Installation Procedure

7.2 Opening screen

7.3 Proﬁ le Screen

7.4 Formats Screen

7.5 Inputs Screen

7.6 Equalizer Screen

7.7 Outputs Screen

7.8 Slit Eq Analyzer

7.9 Creating, Saving and Loading

Conﬁ guration Files

8. “A” Chain Alignment

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23

8.1 Preparing the Soundhead

8.2 Alignment of Solar Cell and

Preampliﬁ er

8.3 Sum and Difference Mode

8.4 Mono EQ and Bypass Level

8.5 Optical Surround Gain and

Delay

8.6 Optical Subwoofer

8.7 Analog Non-Sync, Aux and

Mic levels

8.8 Digital Non-Sync, Digital Aux,

and Digital eight-channel

inputs

8.9 Digital Time Delays

9. “B” Chain Alignment

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29

9.1 Channel conﬁ guration

9.2 Headroom settings

9.3 Main channels

9.4 Subwoofer channel

9.5 Saving Settings After Align-

ment

10. Other Options

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33

10.1 Pre-set Format Levels

10.2 Startup Mode

10.3 Remote Fader

10.4 System Restore from Person-

ality Module

11. Trouble Shooting

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35

12. Connector Pinouts

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38

13. Installation Check List

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39

Table Of Contents

JSD-80

Cinema Sound Processor

Table of Contents

Questions and Answers:

K
Kimberly GarciaAug 18, 2025
What to do if Usl JSD-80 sound system does not work and +5 V and +/-12 V LEDs on the Front Panel are lit?
- J
  Jessica SanchezAug 18, 2025
  If the +5 V and +/-12 V LEDs are lit but the Usl Recording Equipment sound system isn't working, ensure the amplifiers are operating and the volume controls are properly adjusted. If equipped, switch the change-over to the operating projector. Verify the Input Module's indicator LEDs are flickering, and if not, check the solar cell, wiring, and preamp. If the LEDs flicker, inspect the unit wiring, power amplifiers, or loudspeakers. Sound from the front speakers indicates a problem in the JSD unit; no sound suggests an issue elsewhere. Also, make sure the solar cell is illuminated and clean, using compressed air; do not use organic solvents or alcohol. Replace the bulb or repair the exciter supply.

Usl JSD-80 Specifications

General

Brand	Usl
Model	JSD-80
Category	Recording Equipment
Language	English

Summary

Introduction

Safety Information and Standards

General safety precautions for product use and compliance with international safety standards.

Technical Specifications and Connections

Detailed technical specifications including signal connections, inputs, outputs, and audio paths.

Declaration of Conformance, CE

Lists CE compliance, certifications, and equipment classification details.

Installation

System Hardware Mounting and Grounding

Guidelines for rack mounting, grounding, and physical installation of the unit.

System Modules

Back Panel

JSD-80 Interface Software

7.1 Installation Procedure

Instructions for installing the JSD-80 interface software on a computer.

7.7 Outputs Screen

7.5 Inputs Screen

Controls for preamp, matrix, EQ, and analyzer setup.

7.8 Slit EQ Analyzer Screen

Real-time analyzer for assessing audio frequency response.

7.6 Equalizer Screen

Screen for adjusting auditorium equalization settings.

“A” Chain Alignment

8.1 Preparing The Sound Head

Steps to prepare the projector sound head for alignment procedures.

8.3 Sum and Difference Mode

8.2 Alignment of Solar Cell and Preamplifier

Procedure for aligning the solar cell and preamp with the film.

8.5 Optical Surround Gain and Delay

“B” Chain Alignment

9.1 Channel Configuration

9.4 Subwoofer Channel

Setting up and equalizing the subwoofer channel for optimal bass response.

9.6 Saving Settings After Alignment

9.3 Main Channels

Aligning main channels including left, center, and right speakers.

Other Options

10.4 System Restore

Procedure for restoring system settings in case of failure.

Trouble Shooting

System Not Working (No LEDs)

Troubleshooting steps when the system is not working and no front panel LEDs are lit.

Distorted Sound

Steps to diagnose and resolve audio distortion issues.

Stereo Dialog Leakage and Low Surrounds

System Not Working (LEDs Lit)

Troubleshooting steps when the system is not working but LEDs are lit.

Hum and Buzzing Issues

Laptop Connection and System Errors

No Sound in Front Channels

Diagnosing issues when one or more front channels have no sound.

No Sound in Surround Channel

Troubleshooting steps for a missing surround channel.

Installation Check List

B Chain Alignment Checklist

Checklist for performing B Chain audio alignment procedures.

A Chain Alignment Checklists

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