Tektronix ECO 422 Instruction Manual
Instruction Manual
ECO 422
Changeover Unit
070-8472-02
Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.
Copyright E Tektronix, Inc., 1997. All rights reserved. Printed in U.S.A. Tektronix products are
covered by U.S. and foreign patents, issued and pending.
Information in this publication supersedes that in all previously published material. Specifications and price change privileges reserved. The following are registered trademarks: TEKTRONIX and TEK.
For product related information, phone: 800-TEKWIDE (800-835-9433), ext. TV.
For further information, contact: Tektronix, Inc., Corporate Offices, P.O. Box 1000, Wilsonville,
OR 97070–1000, U.S.A. Phone: (503) 627–7111; TLX: 192825; TWX: (910) 467–8708; Cable:
TEKWSGT.
WARRANTY
Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one (1) year from
the date of shipment. If any such product proves defective during this warranty period, T ektronix, at its option, either will repair
the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the warranty
period and make suitable arrangements for the performance of service. Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix, with shipping charges prepaid. Tektronix shall pay
for the return of the product to Customer if the shipment is to a location within the country in which the T ektronix service center
is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate maintenance
and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting from attempts
by personnel other than Tektronix representatives to install, repair or service the product; b) to repair damage resulting from
improper use or connection to incompatible equipment; c) to repair any damage or malfunction caused by the use of non-T ektronix supplies; or d) to service a product that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the product.
THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THIS PRODUCT IN LIEU OF ANY OTHER
WARRANTIES, EXPRESSED OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’ RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY
PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS
WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY
OF SUCH DAMAGES.
EC Declaration of Conformity
We
Tektronix Holland N.V.
Marktweg 73A
8444 AB Heerenveen
The Netherlands
declare under sole responsibility that the
ECO422 Changeover Unit
meets the intent of Directive 89/336/EEC for Electromagnetic Compatibility.
Compliance was demonstrated to the following specifications as listed in the Official
Journal of the European Communities:
EN 50081-1 Emissions:
EN 55022 Class B Radiated and Conducted Emissions
EN 50082-1 Immunity:
IEC 801-2 Electrostatic Discharge Immunity
IEC 801-3 RF Electromagnetic Field Immunity
IEC 801-4 Electrical Fast Transient/Burst Immunity
High-quality shielded cables must be used to ensure compliance to the above listed
standards.
Table of Contents
Getting Started 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product Description 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mechanical Installation 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Installation 1–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cable Installation 1–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hints on Using the User Configuration Switches 1–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuration 1–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Check and First Time Operation 1–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss of the Primary Signal 1–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss of the Backup Signal 1–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss of Power to the ECO 422 1–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Basics 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controls and Indicators 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front-Panel Controls 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Internal Controls 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connectors 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Video Signals (11 Channels) 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Basics 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
State Machine Discussion 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How to Adjust the User-Defined Threshold Levels 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Certification 3–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EMI Standards 3–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theory of Operation 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Logic Conventions 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ECO 422 Block Level Description 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ECO 422 Detailed Circuit Description 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
Input and Comparators
Control and Remote
Reference Voltage and Selector Switch Farm
Post Regulated Power Supply 4–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Verification 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calibration Data Report 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Required 5–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Verification Procedure 5–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Signal Checking Disabled 5–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Black Burst Checks 5–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
through
8
7
9
4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ECO 422
i
Contents
Serial Digital Video Checks 5–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Serial Digital Audio Checks 5–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustment Procedure 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustment Procedure 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How to Adjust the User-Defined Threshold Levels 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Options 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T ektronix Service 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preparation 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Cleaning 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Visual Inspection 7–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Static-Sensitive Components 7–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Verification and Readjustments 7–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Corrective Maintenance 7–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Troubleshooting Procedures 7–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T ektronix Service Offerings 7–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Training 7–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Field Service Centers 7–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Module Exchange 7–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Factory Replacement Parts 7–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Etched Circuit Boards 7–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal/Replacement Instructions 7–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal/Replacement Instructions 7–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Special Instructions for the Connector Board 7–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How to Remove the Heat Sink 7–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repackaging Instructions 7–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identification T ag 7–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repackaging for Shipment 7–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options 8–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Cord Options 8–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replaceable Electrical Parts 9–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagrams/Circuit Board Illustrations 10–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replaceable Mechanical Parts 11–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ii
ECO 422
List of Figures
Figure 1–1: Front of the ECO 422 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–2: Rear of the ECO 422 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–3: Front Rail Mount 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–4: Deep Rackmount 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–5: Shallow Rackmount 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–6: Assembly of Rackmounting Hardware 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–7: Installing the Instrument in the Rack Slides 1–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–8: Example of How the ECO 422 Can be Connected 1–7. . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–9: Default Position of the User Configuration and Mode Switches 1–9. . . . . . . . . . . . . . . .
Figure 1–10: Setup for the Functional Check 1–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–1: Front-Panel Controls 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–2: Default Position of the User Configuration and Mode Switches 2–2. . . . . . . . . . . . . . . .
Figure 2–3: Rear of the ECO 422 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–4: Remote Connector Pin-Out 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–5: Wiring Required to Conform with SMPTE Fault Reporting 2–6. . . . . . . . . . . . . . . . . . . .
Figure 2–6: Setup for Adjusting R265 (the User Level for SX-7) 2–9. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–7: Flowchart for Adjusting R265 2–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents
Figure 4–1: Block Diagram of the ECO 422 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–2: Block Diagram of the Input Comparator 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–3: Block Diagram for the Control and Remote Circuit 4–4. . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–4: Reference Voltage and Selector Switch Farm Block Diagram 4–6. . . . . . . . . . . . . . . . . .
Figure 5–1: Setup to Check Black Burst Levels 5–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–2: Setup to Check the Component Serial Digital Video Levels 5–12. . . . . . . . . . . . . . . . . . . .
Figure 5–3: Setup to Check the Serial Digital Video Composite Levels 5–14. . . . . . . . . . . . . . . . . . . .
Figure 5–4: Setup to Check the Serial Audio Levels 5–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 7–1: Remove these Screws and Post before Attempting to Remove the Connector Board 7–8
Figure 7–2: Slide the Connector Board Out this Way 7–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 7–3: Remove the Heat Sinks this Way 7–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ECO 422
iii
Contents
List of Tables
Table 1–1: Channel Configuration Switches (S1 – S11) 1–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 2–1: Factory Settings of Channel Configuration Switches (S1 – S11) 2–3. . . . . . . . . . . . . . . .
Table 2–2: Truth Table for ECO 422 Switching 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–1: General Characteristics 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–2: Signal Loss Detection 3–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–3: Power Supply 3–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–4: Mechanical (Physical) Characteristics 3–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–5: Environmental Characteristics 3–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 7–1: Static-Sensitive Components 7–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 7–2: Assemblies in the ECO 422 7–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
iv
ECO 422
Safety Summary
Terms
The general safety information in this part of the summary is for both operating
and service personnel. Find specific warnings and cautions throughout the
manual where they apply.
Terms in This Manual
Symbols
Terms on the Product
These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result
in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result in
damage to this product or other property.
These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you read the
marking.
WARNING indicates an injury hazard not immediately accessible as you read the
marking.
Symbols on the Product
ECO 422
CAUTION indicates a hazard to property including the product.
The following symbols may appear on the product:
v
General Safety Summary
DANGER
High Voltage
Power Source
This product is intended to operate from a power source that will not apply more
than 250 volts rms between the supply conductors or between either supply and
ground. A protective ground connection by way of the grounding conductor in
the power cord is essential for safe operation.
Grounding The Product
This product is grounded through the grounding conductor of the power module
power cord. To avoid electric shock, plug the power cord into a properly wired
receptacle before connecting the product input or output terminals. A protective
ground connection by way of the grounding conductor in the power module
power cord is essential for safe operation.
Danger Arising From Loss Of Ground
Protective Ground
(Earth) T erminal
ATTENTION
Refer to
Manual
Double
Insulated
Upon loss of the protective ground connection, all accessible conducting parts
(including controls that may appear to be insulating) can render an electric
shock.
Use The Proper Fuse
To avoid fire hazard, use only the fuse of the correct type, voltage rating, and
current rating as specified in the parts list for your product.
Refer fuse replacement to qualified service personnel.
Do Not Operate In An Explosive Atmosphere
To avoid explosion, do not operate this product in an explosive atmosphere
unless it has been specifically certified for such operation.
vi
ECO 422
Do Not Operate Without Covers
To avoid personal injury, do not operate this product without covers or panels
installed.
Certifications and Compliances
General Safety Summary
CSA Certified Power
Cords
Safety Certification of
Plug-in or VXI Modules
Compliances
CSA Certification includes the products and power cords appropriate for use in
the North America power network. All other power cords supplied are approved
for the country of use.
For modules (plug-in or VXI) that are safety certified by Underwriters Laboratories, UL Listing applies only when the module is installed in a UL Listed
product. CSA Certification applies only when the module is installed in a CSA
Certified product.
Consult the product specifications for IEC Installation Category, Pollution
Degree, and Safety Class.
ECO 422
vii
General Safety Summary
viii
ECO 422
Service Safety Summary
Only qualified personnel should perform service procedures. Read this Service
Safety Summary and the General Safety Summary before performing any service
procedures.
Do Not Service Alone
Disconnect Power
Use Caution When
Servicing the CRT
Use Care When Servicing
With Power On
Do not perform internal service or adjustments of this product unless another
person capable of rendering first aid and resuscitation is present.
To avoid electric shock, disconnect the main power by means of the power cord
or, if provided, the power switch.
To avoid electric shock or injury, use extreme caution when handling the CRT.
Only qualified personnel familiar with CRT servicing procedures and precautions
should remove or install the CRT.
CRTs retain hazardous voltages for long periods of time after power is turned off.
Before attempting any servicing, discharge the CRT by shorting the anode to
chassis ground. When discharging the CRT, connect the discharge path to ground
and then the anode. Rough handling may cause the CRT to implode. Do not nick
or scratch the glass or subject it to undue pressure when removing or installing it.
When handling the CRT, wear safety goggles and heavy gloves for protection.
Dangerous voltages or currents may exist in this product. Disconnect power,
remove battery (if applicable), and disconnect test leads before removing
protective panels, soldering, or replacing components.
ECO 422
X-Radiation
To avoid electric shock, do not touch exposed connections.
To avoid x-radiation exposure, do not modify or otherwise alter the high-voltage
circuitry or the CRT enclosure. X-ray emissions generated within this product
have been sufficiently shielded.
ix
Service Safety Summary
x
ECO 422
Getting Started
Getting Started
Product Description
The ECO 422 Changeover Unit (Figure 1–1 and Figure 1–2) provides automatic
selection of reference sources. Automatic changeover may occur upon fault
detection in any active source. Automatic transfer ensures uninterrupted signals
for critical applications. The ECO 422 is an in-line device without internal
buffers. Switching is by mechanical relay. The ECO 422 also provides internal
termination for unused inputs.
There are 11 identical channels. Each consists of a Primary Input, a Backup
Input, and an Output. All relays switch in unison upon fault detection in any
active channel, front-panel command, or remote command.
The ECO 422 bases error checking on signal amplitude. You can configure each
channel to check for a different type of input. There are six predefined checking
levels: no checking, PAL analog black burst, NTSC black burst, serial digital
component video, NTSC serial digital composite video, and serial digital audio.
A fault occurs when the signal is between 2 and 4 dB (or 2 and 5 dB) down from
nominal for these predefined signals. There are also two user-defined checking
thresholds available.
Separate indicators on the front-panel display faults for both the primary and
backup generator. These indicators remain on until cleared by the operator.
Figure 1–1: Front of the ECO 422
Figure 1–2: Rear of the ECO 422
ECO 422
1–1
Getting Started
Accessories
Installation
Mechanical Installation
The ECO 422 comes with three accessories:
1. Rack slides (351-0751-01, 351-0104-03)
2. Reference card (063-1828-XX)
3. This manual (070-8472-XX)
Rackmounting. The ECO 422 is shipped with the hardware for rackmounting.
The instrument fits in a standard 19-inch rack. Spacing between the front rails of
the rack must be at least 17-¾ inches to allow clearance for the slide-out tracks.
Rack slides conveniently mount in any rack that has a front-to-rear rail spacing
between 15-½ and 28 inches. The ECO 422 requires six inches of clearance
between the instrument rear panel and any rear cabinet panel for connector space
and to provide adequate air circulation.
Mounting the Slide Tracks. Mount the rails using the enclosed hardware as shown
in Figure 1–6. Figures 1–4 and 1–5 shows the rail mounting details for both deep
and shallow racks. Figure 1–3 shows the front mounting deatils. Make sure that
the stationary sections are horizontally aligned, level, and parallel.
1–2
ECO 422
BAR NUT
(Use if the front rail
is not tapped)
Getting Started
Figure 1–3: Front Rail Mount
REAR RACK RAIL
BAR NUT
PNH
SCREWS
ECO 422
Figure 1–4: Deep Rackmount
1–3
Getting Started
BAR NUT
REAR RACK RAIL
FLUSH WITH
REAR RACK
RAIL
PNH
SCREWS
NOTE: Right hand
and left hand stationary section is
designated by the
RH and the LH
marked on the rails.
Stop latch holes
should be towards
the bottom when
slides are in place.
(The right hand rail
is shown above.)
Figure 1–5: Shallow Rackmount
CHASSIS SECTION
10–32 PHS
STOP LATCH
HOLE
INTERMEDIATE
SECTION
AUTOMATIC
LA TCHES
FLAT NUT BAR
SCREW
10–32 PHS
SCREW
FLA T
NUT
BARS
REAR
MOUNTING
ST ANTIONARY
SECTION
1–4
Figure 1–6: Assembly of Rackmounting Hardware
ECO 422
Getting Started
Installing the Instrument. Install the instrument in the rack, as shown in Figure
1–7.
TO INSTALL:
1. Pull the slide-out track section to the
fully extended position.
2. Insert the instrument chassis sections
into the slide-out sections.
3. Press the stop latches and push the
instrument toward the rack until the
latches snap into their holes.
4. Again press the stop latches and push
the instrument fully into the rack.
5. Tighten the front-panel retaining screws.
TO REMOVE:
1. Loosen retaining screw and pull
instrument outward until the stop latches
snap into the holes.
2. Press stop latches and remove
instrument.
Figure 1–7: Installing the Instrument in the Rack Slides
Rack Adjustments. After installation, if not properly adjusted, the slide tracks
may bind. To adjust the tracks, slide the instrument out about 10 inches, slightly
loosen the screws holding the tracks to the front rails, and allow the tracks to
seek an unbound position. Retighten the screws and check the tracks for smooth
operation by sliding the instrument in and out of the rack several times.
Once the instrument is in place within the rack, tighten the knurled retaining
screw to fasten it securely into the rack.
Rack Slide Maintenance. The slide-out tracks do not require lubrication. The dark
gray finish on the tracks is a permanent, lubricated coating.
ECO 422
Removing the Instrument. First, loosen the front-panel knurled retaining screw.
See Figure 1–7. Grasp the front handles and pull the instrument out until all
three slide sections latch. The instrument is firmly held in this position.
1–5
Getting Started
Electrical Installation
To completely remove the instrument, first be sure to disconnect all cabling.
Then, press both release-latch buttons (visible in the stop-latch holes) and
carefully slide the instrument free from the tracks.
You can order any of the following power cord options for the ECO 422. If no
power cord option is ordered, the instrument is shipped with a North American
125 V power cord and one replacement fuse.
Option A1. Universal Europe, 220 V/16 A Power Plug (power cord and one
replacement fuse)
Option A2. United Kingdom, 240 V/15 A Power Plug (power cord and one
replacement fuse)
Option A3. Australian, 240 V/10 A Power Plug (power cord and one replacement
fuse)
Option A4 North American, 250 V/10 A Power Plug (power cord and one
replacement fuse)
Cable Installation
Unless otherwise specified, power cords for use in North America are UL listed
and CSA certified. Cords for use in areas other than North America are approved
by at least one test house acceptable in the country to which the product is
shipped. Power cord part numbers are shown in the Standard Accessories list at
the end of the Replaceable Mechanical Parts List, in Section 11.
NOTE. The BNC connectors are tightly spaced on the ECO 422 rear panel. You
may find it necessary to use a BNC Cable Tool to remove or install cables
(example: Trompeter RT–1L).
There are many different ways to configure the ECO 422. The illustration below
is only one example. One thing to keep in mind, the ECO 422 will automatically
change to the Primary signals whenever it looses power. Therefore, always
power the Backup source and the ECO 422 by the same source and the Primary
source separately. Using this scheme both power sources would have to go down
before you would lose your signals.
1–6
ECO 422
Getting Started
Hints on Using the User
Configuration Switches
Figure 1–8: Example of How the ECO 422 Can be Connected
Use the Channel Configuration Switches Table on page 1–9 to record what type
of signals you have connected to each set of outputs on the rear panel. Then use
the DIP selection guide to make sure that the DIP switches are correctly
configured. There is also a reference card available to keep track of how the
ECO 422 is configured and aid in setting up the instrument.
There are the several different types of signal checking already available but you
may need to feed a different signal through the ECO 422. This section gives one
example, analog active video.
Active Analog Video. The ECO 422 will pass active analog video by using the no
checking mode, but there will be times when you need to check for the presence
of an active video signal. You have at least two options. First, you can set up a
custom checking level using one of the “user-defined” levels. This is great if you
are always passing color bars or some other test signal where the average picture
level remains constant and never fades to black. If the average picture level drops
below the custom set level then an error occurs, causing the ECO 422 to switch
sources. The set level could easily be well above black burst. The second option
is to use the predefined black burst level. This works very well when your goal is
to check for “present/not present” active video. It will accept long periods of
ECO 422
1–7
Getting Started
Configuration
black without generated an error, but it will switch if the signal goes “completely” away.
Again, to summarize the three options available, if you want active video to pass
through the ECO 422:
1. No checking.
2. Set a user-defined level –– best for a constant test signal.
3. Use the predefined black setting –– best for video with a wide variation of
average picture levels or regular fades to blacks.
NOTE. Make sure that any channel not in use has checking disabled. If checking
is not disabled, errors will always be generated. No error checking also allows
the maximum voltage, current, and frequency to pass through the ECO 422.
Photocopy the list of the DIP switches below to log the configuration of your
system and use it as a quick reference. If using one of the “user-defined” levels,
write the definition on the line as a reminder.
All of these switches are available through a small access panel on top of the
ECO 422, eliminating any need to remove the top cover just to change the
function of the outputs.
There is also a Mode switch, switch S14–8. Set it for either Normal or Override
operation. If set for Normal operation, it will not allow you to manually switch
to a bad signal, unless both signals are “bad.” For example: you are set for
manual operation and the Primary signal is in error while the Backup is good.
Press the Sync Source button to change to the Backup source. No matter how
many times you press the Sync Source button again, the ECO 422 will not allow
you to return to the Primary source because it is in error. The only time that you
can switch to an “error” signal in Normal mode is when both of the signals are
bad. In that case, you can manually switch between the two signals. In Override
mode, you can always manually switch to a bad signal. The other positions of
S14 are only used for testing purposes.
1–8
ECO 422
all open = Disabled (signal not checked)
1 = NTSC Black Burst
2 = PAL Black Burst
3 = NTSC Serial Digital Video (composite)
4 = Serial Digital Video (component)
5 = Serial Digital Audio
6 = User defined _________
7 = User defined _________
8 = Attenaution
Figure 1–9: Default Position of the User Configuration and Mode Switches
Getting Started
T able 1–1: Channel Configuration Switches (S1 – S11)
Attenuation
Output # /
Switch #
1 / S1
2 / S2
3 / S3
4 / S4
5 / S5
6 / S6
7 / S7
8 / S8
9 / S9
10 / S10
11 / S11
Setting
(see above)
(set with Sx–8)
On / Off
Type of Signal Attached
ECO 422
1–9
Getting Started
Functional Check and First Time Operation
This section steps through how the ECO 422 will react under its most common
operating circumstances: two good signals, loss and then return of the Primary
signal, loss and return of the Backup signal, and loss of power. Only two input
signals are used here to avoid confusion.
For more details on the controls, what they do, and how they interact, see
Operating Basics, Section 2.
To check out the entire instrument, repeat these procedures for each of the eleven
sets of inputs and outputs.
Two Good Signals
Power down all instruments.
Connect the ECO 422 as shown in Figure 1–10.
1–10
Figure 1–10: Setup for the Functional Check
Set all of the DIP switches (S1 – S11) to open, except for S1–1, which should be
set to closed (NTSC black burst). Note that Primary input is black burst without
setup and the Backup input is black burst with setup. (This is just to illustrate
which signal is the Output.)
ECO 422
Getting Started
Set the user switch (S14–8) to Normal (closed).
Power up all instruments.
Enable the front panel, using the Front Panel button.
Set the ECO 422 to “Switch on Fault” using front-panel buttons. (This is the
default at power on.)
If Primary is not already the source, press the Sync Source button to make
Primary the source. (This is the default at power on.)
Note that the output signal is the Primary input signal (black burst with setup)
and that none of the fault indicators light.
Press the Sync Source button to change to the Backup source.
Note that the signal changes to black burst without setup (Backup).
Check that there is no error on either signal.
Loss of the Primary Signal
Press the Sync Source button again, to switch back to the Primary input.
Disconnect the Primary signal source. (Remove the cable between the SPG 422
and the Primary 1 input of the ECO 422.)
Note the signal automatically switches to the Backup input and the Primary fault
indicator lights.
Reconnect the Primary signal source. (Replace the cable between the SPG 422
and the Primary 1 input of the ECO 422.)
Note that the Primary fault indicator remains on and the Sync Source remains the
Backup (the ECO 422 does not automatically switch back to Primary).
Press the Reset button.
Note that the Primary fault indicator turns off.
Press the Sync Source button to return to the Primary as the source.
Press the Auto Switching button to disable the “Switch on Fault” function.
Remove the Primary input signal. (Again, remove the cable between the
SPG 422 and the Primary 1 input of the ECO 422.)
ECO 422
Note that no switching occurs, but that the Primary fault indicator lights.
Press the Sync Source button to change to the Backup signal.
Press the Sync Source button again to try to change back to the Primary input. (It
should not let you change to a bad input.)
1–11
Getting Started
Reconnect the Primary input source. (Replace the cable between the SPG 422
and the Primary 1 input of the ECO 422.)
Press the Reset button to clear the fault indicator LED.
Return the auto switching to “Switch on Fault.”
Note that the sync source is still Backup.
Loss of the Backup Signal
Loss of Power to the
ECO 422
Disconnect the Backup signal. (Remove the cable between the SPG 422 and the
Backup 1 input of the ECO 422.)
Note that the output signal has changed to the Primary input signal and the
Backup fault indicator LED lights.
Reconnect the Backup signal. (Replace the cable between the SPG 422 and the
Backup 1 input of the ECO 422.)
Clear the fault indicator by pressing the Reset button.
Press the Sync Source button to return to Backup sync source.
Remove the power source from the ECO 422.
Note that the output signal switches to the Primary input signal.
Return the power source.
1–12
ECO 422
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