Tektronix TFS3031 Service Manual

Service Manual

TFS3031 TekRanger 2 Mini Optical Time-Domain Reflectometer

070-9026-05

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.

www.tektronix.com

that in all previously published material. Specifications and price change privileges reserved. T ektronix, Inc., P.O. Box 500, Beaverton, OR 97077 TEKTRONIX and TEK are registered trademarks of T ektronix, Inc.

WARRANTY

T ektronix 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. T ektronix will provide such service at Customer’s site without charge during the warranty period, if the service is performed within the normal on-site service area. T ektronix will provide on-site service outside the normal on-site service area only upon prior agreement and subject to payment of all travel expenses by Customer. When or where on-site service is not available, Customer shall be responsible for packaging and shipping the defective product to the service center designated by T ektronix, with shipping charges prepaid. T ektronix 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. T ektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting from attempts by personnel other than T ektronix representatives to install, repair or service the product; b) to repair damage resulting from improper use or connection to incompatible equipment; or c) 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 P ARTICULAR 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.

WARNING

This equipment generates, uses, and can radiate radio-frequency energy, and if not installed and used in accordance with the instructions manual, may cause interference to radio communications. It has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designated to provide reasonable protection against such interference when operated in a commercial environment. Operation of this equipment in a residential area is likely to cause interference, in which case, the user, at his or her own expense, will be required to take whatever measures may be required to correct the interference.

Getting Started

List of Figures iv. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

List of Tables vi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General Safety Summary xiii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Preface xvii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contacting Tektronix xvii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Assumptions xvii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Before Servicing xviii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

What You Will Find in this Manual xviii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Related Documents xviii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Module-Level Service 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Overview 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The Functional Modules 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Optical Modules 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Static-Sensitive Components 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service Procedure 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operator Information 1–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Port Functions 1–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Updating the Instrument Software 1–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Buttons and Keys 1–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Keyboard Definitions 1–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Battery Recharging and Replacement 1–11. . . . . . . . . . . . . . . . . . . . . . . . . .

Low-Battery Warning 1–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

When to Recharge the NiCad Battery 1–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power/Charger Adapter 1–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NiCad Battery Recharging Procedure 1–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Tips for Maximizing Battery Life 1–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NiCad Battery Disconnection, Removal, and Replacement 1–14. . . . . . . . . . . . . . . .

Specifications – TekRanger (serial nos. below B052000) 1–17. . . . . . . . . . .

Standard 850 nm Multimode, Options 01 and 03 1–17. . . . . . . . . . . . . . . . . . . . . . . .

Standard 1300 nm Multimode, Option 03 1–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Standard 1310 nm Singlemode, Options 04 and 06 1–26. . . . . . . . . . . . . . . . . . . . . . .

Standard 1550 nm Singlemode, Option 06 1–32. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Extended Range 1310 nm Singlemode, Option 08 1–38. . . . . . . . . . . . . . . . . . . . . . .

Extended Range 1550 nm Singlemode, Option 08 1–44. . . . . . . . . . . . . . . . . . . . . . .

Extended Range 1550 nm Singlemode, Option 09 1–50. . . . . . . . . . . . . . . . . . . . . . .

Power 1–56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Display 1–56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Size and Weight 1–56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RS232C Serial Port 1–57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parallel Port 1–57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Keyboard Port 1–57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Environmental 1–58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TFS3031 TekRanger/TekRanger 2 Service Manual

Table of Contents

Theory of Operation

Specifications – TekRanger 2 (serial nos. B052000 and above) 1–61. . . . . .

Standard 850 nm Multimode, Options 01 and 03 1–61. . . . . . . . . . . . . . . . . . . . . . . .

Standard 1300 nm Multimode, Option 03 1–66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Standard 1310 nm Singlemode, Options 04 and 06 1–71. . . . . . . . . . . . . . . . . . . . . . .

Standard 1550 nm Singlemode, Option 06 1–77. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Extended Range 1310/1550 nm Singlemode, Option 10 1–83. . . . . . . . . . . . . . . . . . .

1625 nm Singlemode, Option 12 1–89. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power 1–95. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Display 1–95. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Size and Weight 1–95. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RS232C Serial Port 1–96. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parallel Port 1–96. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Keyboard Port 1–96. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Environmental 1–99. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Accessories and Options 1–101. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Theory of Operation 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Theory of Operation 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Performance V erification (TekRanger)

Performance Check – TekRanger 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

Equipment Required for Performance Check 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . .

Adjustments 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

T est Descriptions 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Singlemode Event-Detection T est Fixture Build Description 3–6. . . . . . . . . . . . . . .

Singlemode Dynamic-Range T est Fixture Build Description 3–9. . . . . . . . . . . . . . .

Singlemode Dead-Zone T est Fixture Build Description 3–10. . . . . . . . . . . . . . . . . . .

Multimode Dynamic-Range T est Fixture 3–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Multimode Event-Detection and Dead-Zone T est Fixture 3–15. . . . . . . . . . . . . . . . . .

Setup 3–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power-On Initialization Check 3–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power/Charger Adapter Check 3–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Floppy Disk Drive Check 3–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Keyboard Check (option 19) 3–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Singlemode Dynamic Range Check 3–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Singlemode Event-Detection Check 3–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Singlemode Dead-Zone Check 3–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Multimode Dynamic Range Check 3–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Multimode Event-Detection Check 3–27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Multimode Dead-Zone Check 3–28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Multimode Distance Accuracy Check 3–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Performance Verification (TekRanger 2)

Performance Check – TekRanger 2 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Equipment Required for Performance Check 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . .

Adjustments 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

T est Descriptions 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TFS3031 TekRanger/TekRanger 2 Service Manual

Maintenance

Table of Contents

Singlemode Range Test Fixture 4–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Singlemode Dead-Zone T est Fixture 4–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Singlemode Reflectance T est Fixture 4–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Singlemode Loss and Distance Accuracy T est Fixture 4–10. . . . . . . . . . . . . . . . . . . .

Multimode Dynamic-Range T est Fixture 4–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Multimode Event-Detection and Dead-Zone T est Fixture 4–12. . . . . . . . . . . . . . . . . .

Setup 4–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power-On Initialization Check 4–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power/Charger Adapter Check 4–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Floppy Disk Drive Check (Option 11) 4–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Keyboard Check (Option 19) 4–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Singlemode Dynamic Range Check 4–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Singlemode Dead-Zone Check 4–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Singlemode Reflectance-Accuracy Check (Options 04, 06, and 10) 4–40. . . . . . . . . .

Singlemode Distance and Loss Measurement Accuracy Check 4–43. . . . . . . . . . . . .

Multimode Dynamic Range Check 4–44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Multimode Event-Detection Check 4–52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Multimode Dead-Zone Check 4–55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Multimode Distance Accuracy Check 4–59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Replaceable Parts

Index

Cleaning the Laser Output Port, Connector Adapter, and

Fiber Connector 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cleaning Materials 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Exposing the Laser Output Port for Cleaning 5–2. . . . . . . . . . . . . . . . . . . . . . . . . . .

Cleaning the Laser Output Port 5–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cleaning the Connector Adapter 5–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cleaning the Fiber Connector 5–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Disassembly 5–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Equipment Required 5–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Modules 5–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mechanical Parts 5–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Disassembly Procedure 5–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting 5–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Static-Sensitive Components 5–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

No Power-On 5–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Error Message Resolution 5–27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Replaceable Parts 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts Ordering Information 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using the Replaceable Parts List 6–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Wire and Cable Assemblies 6–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TFS3031 TekRanger/TekRanger 2 Service Manual

iii

Table of Contents

List of Figures

Figure 1–1: Connector Adapter Installation 1–6. . . . . . . . . . . . . . . . . . . . .

Figure 1–2: NiCad Battery Recharging Setup 1–13. . . . . . . . . . . . . . . . . . .

Figure 1–3: NiCad Battery Removal 1–15. . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2–1: System Block Diagram 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3–1: Singlemode Event-Detection Test Fixture Layout 3–6. . . . . .

Figure 3–2: Scatter Plot for 50 m Event 3–8. . . . . . . . . . . . . . . . . . . . . . . .

Figure 3–3: Singlemode Dead-Zone Test Fixture 3–11. . . . . . . . . . . . . . . . .

Figure 3–4: Desired OTDR Signature 3–12. . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3–5: Multimode Dynamic-Range Test Fixture 3–14. . . . . . . . . . . . .

Figure 3–6: Multimode Event-Detection and Dead-Zone Test

Fixture 3–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3–7: Multimode Event-Detection and Dead-Zone Test

Fixture: OTDR Trace 3–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4–1: TFS3031 Range Test Fixture 4–6. . . . . . . . . . . . . . . . . . . . . . .

Figure 4–2: Singlemode Dead-Zone Test Fixture 4–7. . . . . . . . . . . . . . . . .

Figure 4–3: TFS3031 Singlemode Reflectance Test Fixture 4–9. . . . . . . .

Figure 4–4: TFS3031 Singlemode Loss and Distance Accuracy

Test Fixture 4–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4–5: Multimode Dynamic-Range Test Fixture 4–11. . . . . . . . . . . . .

Figure 4–6: Multimode Event-Detection and Dead-Zone Test

Fixture 4–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4–7: Multimode Event-Detection and Dead-Zone Test

Fixture: OTDR Trace 4–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4–8: Scatter Plot for 50 m Event 4–14. . . . . . . . . . . . . . . . . . . . . . . .

Figure 4–9: Singlemode Dynamic-Range Test Waveform, Longest

Pulse Width 4–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4–10: Singlemode Dynamic-Range Check, Longest Pulse

Width, Zero Intercept 4–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4–11: Singlemode Dynamic-Range Check, Longest Pulse

Width, 98% Noise Level 4–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4–12: Singlemode Dynamic-Range Test Waveform, 500-m

Pulse Width 4–27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4–13: Singlemode Dynamic-Range Check, 500-m Pulse

Width, Zero Intercept 4–28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TFS3031 TekRanger/TekRanger 2 Service Manual

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Figure 4–14: Singlemode Dynamic-Range Check, 500-m Pulse

Width, 98% Noise Level 4–29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4–15: Singlemode Dynamic-Range Test Waveform, 20-m

Pulse Width 4–31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4–16: Singlemode Dynamic-Range Check, 20-m Pulse

Width, Zero Intercept 4–32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4–17: Singlemode Dynamic-Range Check, 20-m Pulse

Width, 98% Noise Level 4–33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4–18: Singlemode Dead-Zone Test Waveform 4–35. . . . . . . . . . . . .

Figure 4–19: Singlemode Dead-Zone Check, Reflection at 1 km 4–36. . . .

Figure 4–20: Singlemode Attenuation Dead Zone 4–37. . . . . . . . . . . . . . . .

Figure 4–21: Singlemode Event Dead-Zone Check 4–38. . . . . . . . . . . . . . .

Figure 4–22: Singlemode Event Dead Zone 4–39. . . . . . . . . . . . . . . . . . . . .

Figure 4–23: Singlemode Reflectance Test Waveform 4–41. . . . . . . . . . . . .

Figure 4–24: Singlemode Reflectance Check 4–42. . . . . . . . . . . . . . . . . . . .

Figure 4–25: Multimode Range Test Fixture Trace, Longest

Pulse Width 4–45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4–26: Multimode Dynamic-Range Check Zero

Intercept, Longest Pulse Width 4–46. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4–27: Multimode Dynamic-Range Check 98% Noise

Level, Longest Pulse Width 4–47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4–28: Multimode Range Test Fixture Trace, 1-m Pulse

Width 4–49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4–29: Multimode Dynamic-Range Check Zero Intercept,

1-m Pulse Width 4–50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4–30: Multimode Dynamic-Range Check 98% Noise

Level, 1-m Pulse Width 4–51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4–31: Multimode Event-Detection Test Fixture Trace 4–53. . . . . . .

Figure 4–32: Multimode Event-Detection Test Fixture Event

Table 4–53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4–33: Multimode Dead-Zone Check, Establishing the

Backscatter Level 4–56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4–34: Multimode Attenuation Dead Zone 4–57. . . . . . . . . . . . . . . .

Figure 4–35: Multimode Event Dead Zone 4–58. . . . . . . . . . . . . . . . . . . . . .

Figure 5–1: Exposing the Laser Output Port for Cleaning 5–2. . . . . . . . .

Figure 5–2: Cleaning the Laser Output Port 5–3. . . . . . . . . . . . . . . . . . . .

Figure 5–3: Cleaning the Connector Adapter 5–4. . . . . . . . . . . . . . . . . . .

Figure 5–4: Cleaning the Fiber Connector 5–5. . . . . . . . . . . . . . . . . . . . . .

Figure 5–5: Electrical Module Locator 5–8. . . . . . . . . . . . . . . . . . . . . . . . .

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Figure 5–6: Mechanical Parts Locator (Electrical Modules are

Dimmed and Included for Reference Only) 5–9. . . . . . . . . . . . . . . . . .

Figure 6–1: Case and Connector Panel Assemblies 6–8. . . . . . . . . . . . . . .

Figure 6–2: Opto–Electrical Assemblies: Dual Port 6–11. . . . . . . . . . . . . .

Figure 6–3: Wire and Cable Assemblies 6–13. . . . . . . . . . . . . . . . . . . . . . . .

TFS3031 TekRanger/TekRanger 2 Service Manual

List of Tables

Table of Contents

Table 1–1: TFS3031 Functional Modules 1–1. . . . . . . . . . . . . . . . . . . . . . .

Table 1–2: Keyboard Text-Entry Functions 1–10. . . . . . . . . . . . . . . . . . . .

Table 1–3: Front-Panel Functions 1–10. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–4: Optical Signal Characteristics (850 nm Multimode,

Options 01 and 03) 1–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–5: Vertical System Measurements (850 nm Multimode,

Options 01 and 03) 1–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–6: Measurement Range (850 nm Multimode,

Options 01 and 03) 1–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–7: Single-Event Distance Measurement Repeatability

(850 nm Multimode, Options 01 and 03) 1–18. . . . . . . . . . . . . . . . . . . .

Table 1–8: Vertical System Dynamic Range (850 nm Multimode,

Options 01 and 03) 1–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–9: Horizontal System Dead Zone (850 nm Multimode,

Options 01 and 03) 1–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–10: Horizontal System Distance Span and Range

(850 nm Multimode, Options 01 and 03) 1–20. . . . . . . . . . . . . . . . . . . .

Table 1–11: System Measurement Accuracy (850 nm Multimode,

Options 01 and 03) 1–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–12: Sample Density, Pulsewidth, and Range Combinations

(850 nm Multimode, Options 01 and 03) 1–20. . . . . . . . . . . . . . . . . . . .

Table 1–13: Bandwidth and Transient Characteristics (850 nm

Multimode, Options 01 and 03) 1–20. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–14: Optical Signal Characteristics (1300 nm Multimode,

Option 03) 1–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–15: Vertical System Dynamic Range (1300 nm Multimode,

Option 03) 1–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–16: System Measurement Accuracy (1300 nm Multimode,

Option 03) 1–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–17: Horizontal System Dead Zone (1300 nm Multimode,

Option 03) 1–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–18: Horizontal System Distance Span and Range

(1300 nm Multimode, Option 03) 1–24. . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–19: Sample Density, Pulsewidth, and Range Combinations

(1300 nm Multimode, Option 03) 1–25. . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–20: Bandwidth and Transient Characteristics

(1300 nm Multimode, Option 03) 1–25. . . . . . . . . . . . . . . . . . . . . . . . . .

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Table 1–21: Optical Signal Characteristics (Standard 1310 nm

Singlemode, Options 04 and 06) 1–26. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–22: Vertical System Measurements (Standard 1310 nm

Singlemode, Options 04 and 06) 1–27. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–23: Measurement Range (Standard 1310 nm Singlemode,

Options 04 and 06) 1–27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–24: Single-Event Distance Measurement Repeatability

(Standard 1310 nm Singlemode, Options 04 and 06) 1–27. . . . . . . . . .

Table 1–25: Vertical System Dynamic Range (Standard 1310 nm

Singlemode, Options 04 and 06) 1–28. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–26: Horizontal System Dead Zone (Standard 1310 nm

Singlemode, Options 04 and 06) 1–29. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–27: Horizontal System Distance Span and Range

(Standard 1310 nm Singlemode, Options 04 and 06) 1–30. . . . . . . . . .

Table 1–28: Sample Density, Pulsewidth, and Range Combinations

(Standard 1310 nm Singlemode, Options 04 and 06) 1–31. . . . . . . . . .

Table 1–29: Bandwidth and Transient Characteristics

(Standard 1310 nm Singlemode, Options 04 and 06) 1–31. . . . . . . . . .

Table 1–30: Optical Signal Characteristics (Standard 1550 nm

Singlemode, Option 06) 1–32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–31: Vertical System Measurements (Standard 1550 nm

Singlemode, Option 06) 1–33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–32: Measurement Range (Standard 1550 nm Singlemode,

Option 06) 1–33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–33: Single-Event Distance Measurement Repeatability

(Standard 1550 nm Singlemode, Option 06) 1–33. . . . . . . . . . . . . . . . .

Table 1–34: Vertical System Dynamic Range (Standard 1550 nm

Singlemode, Option 06) 1–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–35: Horizontal System Dead Zone (Standard 1550 nm

Singlemode, Option 06) 1–35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–36: Horizontal System Distance Span and Range

(Standard 1550 nm Singlemode, Option 06) 1–36. . . . . . . . . . . . . . . . .

Table 1–37: Sample Density, Pulsewidth, and Range Combinations

(Standard 1550 nm Singlemode, Option 06) 1–37. . . . . . . . . . . . . . . . .

Table 1–38: Bandwidth and Transient Characteristics

(Standard 1550 nm Singlemode, Option 06) 1–37. . . . . . . . . . . . . . . . .

Table 1–39: Optical Signal Characteristics (Extended Range

1310 nm Singlemode, Option 08) 1–38. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–40: Vertical System Measurements (Extended Range

1310 nm Singlemode, Option 08) 1–39. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–41: Measurement Range (Extended Range 1310 nm

Singlemode, Option 08) 1–39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Table 1–42: Single-Event Distance Measurement Repeatability

(Extended Range 1310 nm Singlemode, Option 08) 1–39. . . . . . . . . . .

Table 1–43: Vertical System Dynamic Range (Extended Range

1310 nm Singlemode, Option 08) 1–40. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–44: Horizontal System Dead Zone (Extended Range

1310 nm Singlemode, Option 08) 1–41. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–45: Horizontal System Distance Span and Range

(Extended Range 1310 nm Singlemode, Option 08) 1–42. . . . . . . . . . .

Table 1–46: Sample Density, Pulsewidth, and Range Combinations

(Extended Range 1310 nm Singlemode, Option 08) 1–43. . . . . . . . . . .

Table 1–47: Bandwidth and Transient Characteristics (Extended

Range 1310 nm Singlemode, Option 08) 1–43. . . . . . . . . . . . . . . . . . . . .

Table 1–48: Optical Signal Characteristics (Extended

Range 1550 nm Singlemode, Option 08) 1–44. . . . . . . . . . . . . . . . . . . . .

Table 1–49: Vertical System Measurements (Extended

Range 1550 nm Singlemode, Option 08) 1–45. . . . . . . . . . . . . . . . . . . . .

Table 1–50: Measurement Range (Extended Range 1550 nm

Singlemode, Option 08) 1–45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–51: Single-Event Distance Measurement Repeatability

(Extended Range 1550 nm Singlemode, Option 08) 1–45. . . . . . . . . . .

Table 1–52: Vertical System Dynamic Range (Extended Range

1550 nm Singlemode, Option 08) 1–46. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–53: Horizontal System Dead Zone (Extended Range

1550 nm Singlemode, Option 08) 1–47. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–54: Horizontal System Distance Span and Range

(Extended Range 1550 nm Singlemode, Option 08) 1–48. . . . . . . . . . .

Table 1–55: Sample Density, Pulsewidth, and Range Combinations

(Extended Range 1550 nm Singlemode, Option 08) 1–49. . . . . . . . . . .

Table 1–56: Bandwidth and Transient Characteristics

(Extended Range 1550 nm Singlemode, Option 08) 1–49. . . . . . . . . . .

Table 1–57: Optical Signal Characteristics (Extended Range

1550 nm Singlemode, Option 09) 1–50. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–58: Vertical System Measurements (Extended Range

1550 nm Singlemode, Option 09) 1–51. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–59: Measurement Range (Extended Range 1550 nm

Singlemode, Option 09) 1–51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–60: Single-Event Distance Measurement Repeatability

(Extended Range 1550 nm Singlemode, Option 09) 1–51. . . . . . . . . . .

Table 1–61: Vertical System Dynamic Range (Extended Range

1550 nm Singlemode, Option 09) 1–52. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–62: Horizontal System Dead Zone (Extended Range

1550 nm Singlemode, Option 09) 1–53. . . . . . . . . . . . . . . . . . . . . . . . . . .

TFS3031 TekRanger/TekRanger 2 Service Manual

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Table 1–63: Horizontal System Distance Span and Range

(Extended Range 1550 nm Singlemode, Option 09) 1–54. . . . . . . . . . .

Table 1–64: Sample Density, Pulsewidth, and Range Combinations

(Extended Range 1550 nm Singlemode, Option 09) 1–55. . . . . . . . . . .

Table 1–65: Bandwidth and Transient Characteristics

(Extended Range 1550 nm Singlemode, Option 09) 1–55. . . . . . . . . . .

Table 1–66: Optical Signal Characteristics (850 nm Multimode,

Options 01 and 03) 1–61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–67: Vertical System Measurements (850 nm Multimode,

Options 01 and 03) 1–62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–68: Single-Event Distance Measurement Repeatability

(850 nm Multimode, Options 01 and 03) 1–62. . . . . . . . . . . . . . . . . . . .

Table 1–69: Vertical System Dynamic Range (850 nm Multimode,

Options 01 and 03) 1–63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–70: System Measurement Accuracy (850 nm Multimode,

Options 01 and 03) 1–63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–71: Horizontal System Dead Zone (850 nm Multimode,

Options 01 and 03) 1–64. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–72: Horizontal System Distance Span and Range

(850 nm Multimode, Options 01 and 03) 1–64. . . . . . . . . . . . . . . . . . . .

Table 1–73: Sample Density, Pulsewidth, and Range Combinations

(850 nm Multimode, Options 01 and 03) 1–65. . . . . . . . . . . . . . . . . . . .

Table 1–74: Bandwidth and Transient Characteristics (850 nm

Multimode, Options 01 and 03) 1–65. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–75: Optical Signal Characteristics (1300 nm

Multimode, Option 03) 1–66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–76: Vertical System Measurements (1300 nm Multimode,

Option 03) 1–67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–77: Measurement Range (1300 nm Multimode,

Option 03) 1–67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–78: Single-Event Distance Measurement Repeatability

(1300 nm Multimode, Option 03) 1–67. . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–79: Vertical System Dynamic Range (1300 nm Multimode,

Option 03) 1–68. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–80: Horizontal System Dead Zone (1300 nm Multimode,

Option 03) 1–69. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–81: Horizontal System Distance Span and Range

(1300 nm Multimode, Option 03) 1–69. . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–82: System Measurement Accuracy (1300 nm Multimode,

Options 03) 1–70. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–83: Sample Density, Pulsewidth, and Range Combinations

(1300 nm Multimode, Option 03) 1–70. . . . . . . . . . . . . . . . . . . . . . . . . .

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Table 1–84: Bandwidth and Transient Characteristics

(1300 nm Multimode, Option 03) 1–70. . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–85: Optical Signal Characteristics (Standard 1310 nm

Singlemode, Options 04 and 06) 1–71. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–86: Vertical System Measurements (Standard 1310 nm

Singlemode, Options 04 and 06) 1–72. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–87: Single-Event Distance Measurement Repeatability

(Standard 1310 nm Singlemode, Options 04 and 06) 1–72. . . . . . . . . .

Table 1–88: System Measurement Accuracy (Standard 1310 nm

Singlemode, Options 04 and 06) 1–72. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–89: Vertical System Dynamic Range (Standard 1310 nm

Singlemode, Options 04 and 06) 1–73. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–90: Horizontal System Dead Zone (Standard 1310 nm

Singlemode, Options 04 and 06) 1–74. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–91: Horizontal System Distance Span and Range

(Standard 1310 nm Singlemode, Options 04 and 06) 1–75. . . . . . . . . .

Table 1–92: Sample Density, Pulsewidth, and Range Combinations

(Standard 1310 nm Singlemode, Options 04 and 06) 1–76. . . . . . . . . .

Table 1–93: Bandwidth and Transient Characteristics

(Standard 1310 nm Singlemode, Options 04 and 06) 1–76. . . . . . . . . .

Table 1–94: Optical Signal Characteristics (Standard 1550 nm

Singlemode, Option 06) 1–77. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–95: Vertical System Measurements (Standard 1550 nm

Singlemode, Option 06) 1–78. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–96: Single-Event Distance Measurement Repeatability

(Standard 1550 nm Singlemode, Option 06) 1–78. . . . . . . . . . . . . . . . .

Table 1–97: System Measurement Accuracy (Standard 1550 nm

Singlemode, Option 06) 1–78. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–98: Vertical System Dynamic Range (Standard 1550 nm

Singlemode, Option 06) 1–79. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–99: Horizontal System Dead Zone (Standard 1550 nm

Singlemode, Option 06) 1–80. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–100: Horizontal System Distance Span and Range

(Standard 1550 nm Singlemode, Option 06) 1–81. . . . . . . . . . . . . . . . .

Table 1–101: Sample Density, Pulsewidth, and Range

Combinations (Standard 1550 nm Singlemode, Option 06) 1–82. . . . .

Table 1–102: Bandwidth and Transient Characteristics

(Standard 1550 nm Singlemode, Option 06) 1–82. . . . . . . . . . . . . . . . .

Table 1–103: Optical Signal Characteristics (Extended Range

1310/1550 nm Singlemode, Option 10) 1–83. . . . . . . . . . . . . . . . . . . . . .

Table 1–104: Vertical System Measurements (Extended Range

1310/1550 nm Singlemode, Option 10) 1–84. . . . . . . . . . . . . . . . . . . . . .

TFS3031 TekRanger/TekRanger 2 Service Manual

Table of Contents

Table 1–105: Single-Event Distance Measurement Repeatability

(Extended Range 1310/1550 nm Singlemode, Option 10) 1–84. . . . . . .

Table 1–106: System Measurement Accuracy (Extended Range

1310/1550 nm Singlemode, Option 10) 1–84. . . . . . . . . . . . . . . . . . . . . .

Table 1–107: Vertical System Dynamic Range (Extended Range

1310/1550 nm Singlemode, Option 10) 1–85. . . . . . . . . . . . . . . . . . . . . .

Table 1–108: Horizontal System Dead Zone (Extended Range

1550 nm Singlemode, Option 08) 1–86. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–109: Horizontal System Distance Span and Range

(Extended Range 1550 nm Singlemode, Option 08) 1–87. . . . . . . . . . .

Table 1–110: Sample Density, Pulsewidth, and Range Combinations

(Extended Range 1550 nm Singlemode, Option 08) 1–88. . . . . . . . . . .

Table 1–111: Bandwidth and Transient Characteristics (Extended

Range 1550 nm Singlemode, Option 08) 1–88. . . . . . . . . . . . . . . . . . . . .

Table 1–112: Optical Signal Characteristics (1625 nm

Singlemode, Option 12) 1–89. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–113: Vertical System Measurements (1625 nm

Singlemode, Option 12) 1–90. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–114: Single-Event Distance Measurement Repeatability

(1625 nm Singlemode, Option 12) 1–90. . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–115: Vertical System Dynamic Range (1625 nm

Singlemode, Option 12) 1–91. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–116: Horizontal System Dead Zone (1625 nm Singlemode,

Option 12) 1–92. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–117: Horizontal System Distance Span and Range

(1625 nm Singlemode, Option 12) 1–93. . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–118: Sample Density, Pulsewidth, and Range

Combinations (1625 nm Singlemode, Option 12) 1–94. . . . . . . . . . . . .

Table 1–119: Bandwidth and Transient Characteristics

(1625 nm Singlemode, Option 12) 1–94. . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–120: Certifications and compliances 1–99. . . . . . . . . . . . . . . . . . . .

Table 1–121: Standard Accessories 1–101. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–122: Optional Accessories 1–102. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–123: Configuration Options 1–103. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–124: Power/Charger Adapter Cord Options 1–104. . . . . . . . . . . . .

Table 1–125: Laser Output Port Options 1–104. . . . . . . . . . . . . . . . . . . . . . .

Table 1–126: Connector Adapter Options 1–105. . . . . . . . . . . . . . . . . . . . . .

Table 1–127: Performance Check Software 1–105. . . . . . . . . . . . . . . . . . . . .

Table 1–128: Operating System Software 1–105. . . . . . . . . . . . . . . . . . . . . . .

Table 3–1: Singlemode Fiber Test Fixture Specifications 3–7. . . . . . . . . .

Table 5–1: Equipment Required for Disassembly 5–6. . . . . . . . . . . . . . . .

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TFS3031 TekRanger/TekRanger 2 Service Manual

General Safety Summary

Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. To avoid potential hazards, use this product only as specified.

Only qualified personnel should perform service procedures.

Injury Precautions

WARNING. INVISIBLE LASER RADIATION. To eliminate hazardous radiation exposure, do not use controls or adjustments, or perform procedures, other than those specified in this manual.

Laser Radiation

Optical Output

The TFS3031 tests optical fibers by emitting short pulses of laser light. The interval between pulses is large compared to the pulsewidth. Although the pulsed power is in the milliwatt range, the average power is only in the microwatt range. The light is emitted by the optical port on the right side-panel, and is invisible to the human eye.

The TFS3031 is classified as a the Radiation Control and Health Safety Act of 1968, and complies with 21 CFR

1040.10 and 1040.11. Even though the TFS3031 is categorized as a

product (the lowest classification), you should avoid exposing your eyes to its light:

H Do not look into the optical port when the TFS3031 is switched on. H Keep the dust cap on the optical port when not in use. H Avoid looking at the free end of a test fiber (the end not connected to the

TFS3031). If possible, direct the free end toward a non-reflective surface.

When a fiber is not connected to the optical port, the TFS3031 may emit laser light briefly in the following circumstances:During the connection status portion of the test, until the operator either terminates the test, or allows it to continue under the ‘‘connection status’’ warning. If the fiber is disconnected from the optical port during a test, the laser may remain on for up to 60 seconds.

I laser product under

I laser

TFS3031 TekRanger/TekRanger 2 Service Manual

xiii

General Safety Summary

To Avoid Fire or Personal Injury

Use Proper Power Cord

Replace Batteries Properly. Replace batteries only with the proper type and rating

specified. Recharge Batteries Properly. Recharge batteries for the recommended charge

cycle only.

Use Proper AC Adapter. Use only the AC adapter specified for this product. Do Not Operate Without Covers. Do not operate this product with covers or panels

removed.

Use Proper Fuse. Use only the fuse type and rating specified for this product. Avoid Exposed Circuitry. Do not touch exposed connections and components

when power is present. Wear Eye Protection. Wear eye protection if exposure to high-intensity rays or

laser radiation exists. Do Not Operate With Suspected Failures. If you suspect there is damage to this

product, have it inspected by qualified service personnel.

Do Not Operate in an Explosive Atmosphere.

To avoid fire hazard, use only the power cord specified for this product.

Do Not Operate Without

Covers

Do Not Operate in

Explosive Atmosphere

Power Sources

External Power

To avoid electric shock or fire hazard, do not operate this product with covers or panels removed.

To avoid injury or fire hazard, do not operate this product in an explosive atmosphere.

This product is designed to operate from an internal, rechargeable nickel-cadmium (NiCad) battery, or an external power/charger adapter rated at 9 to 16 volts DC, 40 watts.

Use only the power/charger adapter that is specified for the TFS3031.

CAUTION. The power/charger adapter is not hermetically sealed. Do not expose it to moisture, which can penetrate and destroy it.

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TFS3031 TekRanger/TekRanger 2 Service Manual

General Safety Summary

Battery

Battery Recycling

Fuse

Do not expose the battery to fire or intense heat. Do not open or mutilate the battery. Avoid contact with released electrolyte which is corrosive and may damage eyes, skin and clothing. Check with local codes for special disposal instructions. Only the entire battery pack is replaceable. Individual cells are not replaceable.

This product contains a Nickel Cadmium (NiCd) battery, which must be recycled or disposed of properly. For the location of a local battery recycler in the U.S. or Canada, please contact:

RBRC (800) BATTERY Rechargeable Battery Recycling Corp. (800) 227-7379 P.O. Box 141870 www.rbrc.com Gainesville, Florida 32614

The TFS3031 contains a 3.5 A, 125 V, fast-acting fuse on the Power Supply board.

Product Damage Precautions

Use Proper Power Source

Provide Proper Ventilation

Do not operate this product from a power source that applies more than the voltage specified.

To prevent product overheating, provide proper ventilation.

TFS3031 TekRanger/TekRanger 2 Service Manual

General Safety Summary

Safety Terms and Symbols

Terms in This Manual

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. CAUTION indicates a hazard to property including the product.

Symbols on the Product

xvi

The following symbols may appear on the product:

Laser Source Laser Source

CAUTION

Refer to Manual

WARNING

High Voltage

Double

Insulated

Protective Ground

(Earth) Terminal

TFS3031 TekRanger/TekRanger 2 Service Manual

Preface

Contacting Tektronix

This manual is used for servicing the TFS3031 to module level only. It does not contain component-level service information, schematics, or parts lists.

NOTE. This manual covers both the TekRanger and the TekRanger 2 instruments. TekRanger instruments have serial numbers below B052000. TekRanger 2 instruments have serial numbers B052000 and above.

Section 1 includes specifications for both the TekRanger and TekRanger 2. Section 3 contains the TekRanger performance check, and section 4 contains the TekRanger 2 performance check.

All other service information in this manual is generic to both versions of the TFS3031.

Phone 1-800-833-9200*

Address Tektronix, Inc.

Department or name (if known) 14200 SW Karl Braun Drive P.O. Box 500 Beaverton, OR 97077 USA

Web site www.tektronix.com

Sales support 1-800-833-9200, select option 1*

Service support 1-800-833-9200, select option 2*

Technical support Email: support@tektronix.com

1-800-833-9200, select option 3* 1-503-627-2400

6:00 a.m. – 5:00 p.m. Pacific time

* This phone number is toll free in North America. After office hours, please leave a

voice mail message. Outside North America, contact a Tektronix sales office or distributor; see the Tektronix web site for a list of offices.

TFS3031 TekRanger/TekRanger 2 Service Manual

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Preface

Assumptions

The procedures in this manual assume that you are a qualified electronics technician, and have a working knowledge of service procedures for fiber-optic test equipment.

Before Servicing

To prevent injury to yourself or damage to equipment:

H You must be a qualified service person. H Read the Safety Summary at the beginning of this manual. H Heed all warnings, cautions and notes in this manual.

What You Will Find in this Manual

Module-Level Service

Overview

This manual is used for servicing the TFS3031 (both TekRanger and TekRanger 2 instruments) to module level only. A module is defined as a complete circuit board assembly or other electrical part that performs a specific function.

When a problem is traced to a module, the usual corrective procedure is to replace the module.

This manual does not contain:

H Component-level troubleshooting or calibration information. H Information pertaining to component replacement or module repair. H Circuit board schematics. H Component-level parts lists or information.

The Functional Modules

There are six functional modules in the TFS3031:

T able 1–1: TFS3031 Functional Modules

Module Module Name Function Assembly

Display module Display (LCD) A1

Multimode Optical Module assembly (includes MMDAS board and optical module)

Singlemode Optical Module assembly (includes SMDAS board and optical module)

Multimode acquisition

Singlemode acquisition

Number

TFS3031 TekRanger/TekRanger 2 Service Manual

1–1

Module-Level Service

T able 1–1: TFS3031 Functional Modules

Optical Modules

Module Assembly

MAIN31 board

Power Supply

Assembly numbers and part descriptions are in Section 5.

board

DC/AC Converter board

FunctionModule Name

Number

Instrument controller

Power supply A5

Powers the backlight A6

The Multimode Optical Module assembly includes the MMDAS board and its optical module. The Multimode Optical Module assembly is included in instrument options 01 and 03.

The Singlemode Optical Module assembly includes the SMDAS board and its optical module. The Singlemode Optical Module assembly is included in instrument options 04, 06, 10, and 12.

If a TFS3031 has both a singlemode and multimode option installed, the singlemode port is in the top position and multimode port is in the bottom position on the side panel. If only one option is installed, it is always in the bottom position whether singlemode or multimode.

The floppy disk drive (Option 11 instruments only) is always mounted on the optical module that is in the bottom position.

For complete listings and descriptions of all electrical modules and mechanical parts, see Section 6.

1–2

TFS3031 TekRanger/TekRanger 2 Service Manual

Static-Sensitive Components

CAUTION. All modules in the TFS3031 contain components that are sensitive to electrostatic discharge (ESD)

When servicing the TFS3031, work only at a static-free work station, and practice standard anti-static handling procedures.

Service Procedure

The direct service-related sections in this manual are: H Section 2. System Block Diagram. Shows the functional relationship of the

modules.

H Section 3. Performance Check – TekRanger. Checks TFS3031 performance

to verify correct operation after repairs and adjustments have been made. This section applies to instruments with serial numbers below B052000.

Module-Level Service

H Section 4. Performance Check – TekRanger 2. Checks TFS3031 performance

to verify correct operation after repairs and adjustments have been made. This section applies to instruments with serial numbers B052000 and above.

H Section 5. Maintenance. Includes:

H Cleaning the optical port, connector adapter, and fiber connector. H Disassembly procedure to module level. H Resolving error messages displayed on the screen. H Troubleshooting problems to module level.

H Section 6. Replaceable Parts. Lists and describes replaceable electrical and

mechanical parts.

Section 1. General Information. Contains product information, user information, battery recharging and replacement information, instrument specifications, accessories, and options. If you have no need for this information, go directly to the other sections.

TFS3031 TekRanger/TekRanger 2 Service Manual

1–3

Module-Level Service

1–4

TFS3031 TekRanger/TekRanger 2 Service Manual

Operator Information

This section summarizes TFS3031 connector, button, and softkey functions. A quick review of this section will familiarize you with the basic operation of the

TFS3031, which may help when servicing the instrument. For complete operator information, refer to the TFS3031 TekRanger/TekRanger 2

User Manual.

WARNING. INVISIBLE LASER RADIATION. To eliminate hazardous radiation exposure do not use controls or adjustments, or perform procedures, other than those specified in this manual.

CAUTION. Do not fire the laser (push the  button) unless a fiber is connected to the Laser Output port. Damage to internal electronics can result.

Port Functions

Keyboard connector (on upgraded instruments and instruments with serial

numbers B030000 and above)

Laser Output ports

9-pin RS232C serial port

Disk eject button

Optional 3.5 inch floppy disk drive

25-pin parallel port

Dust caps and labeling omitted from illustration

TFS3031 TekRanger/TekRanger 2 Service Manual

1–5

Operator Information

Laser Output Port and

Connector Adapter

Laser Output Port

The test fiber connects to the Laser Output port located on the side panel. Laser light is emitted into the test fiber from the Laser Output port.

If both singlemode and multimode Laser Output ports are installed, the singlemode port is in top position and multimode port in bottom position. If one Laser Output port is installed, it will always be in the bottom position whether singlemode or multimode.

Singlemode instrument options are 04, 06, and 10. Multimode instrument options are 01 and 03.

Connector Adapter

The connector adapter attaches the test fiber to the Laser Output port. Connector adapters must be installed on the Laser Output port before use.

NOTE. The type of connector adapter and connector on the test fiber must match for proper mating. See page 1–105 for a list of connector adapter options.

Connector Adapter Installation and Removal

Connector adapters are keyed for proper mating with the Laser Output port. To install a connector adapter, align the keyed elements, slide the connector

adapter onto the Laser Output port, and turn clockwise until the connector adapter is finger tight (see Figure 1–1 on page 1–6).

To remove a connector adapter, unscrew it counterclockwise and pull it straight off of the port.

Connector adapter

Figure 1–1: Connector Adapter Installation

1–6

TFS3031 TekRanger/TekRanger 2 Service Manual

Operator Information

CAUTION. Do not touch the exposed end of the Laser Output port with anything but the proper cleaning materials. See page NO TAG for cleaning instructions.

To protect against damage, all ports should be capped with their dust caps when not in use.

RS232C Serial Port

Parallel Port

Keyboard Connector

Floppy Disk Drive

The 9-pin RS232C serial port connects to an external serial-type printer or computer.

The 25-pin parallel port connects to an external parallel-type printer.

A mini-DIN connector is available for an optional keyboard (on upgraded instruments, and instruments with serial numbers B030000 and above). Tables of keyboard sequences that duplicate front-panel controls and functions are given later in this section.

The 1.44 Mbyte, 3.5 inch floppy disk drive is for disk storage of test files and for updating the instrument software. The disk drive is an optional accessory installed as Option 11.

Remove the floppy disk from the drive when not in use.

Formatting a Floppy Disk

Both new and used floppy disks may have to be formatted. Formatting destroys any data already on a disk. To format a disk:

1. Insert an unformatted disk in the floppy disk drive.

2. Push the Store or Print softkey to access file storage. The TFS3031 checks

the drive for a disk and determines if the disk can be read. An unformatted disk cannot be read.

If the drive contains an unformatted disk, you are prompted to format by pushing the Yes softkey, or not to format by pushing the No softkey.

3. To format the disk, push the Yes softkey.

A final yes/no confirmation prompt is displayed along with a notice that formatting the disk will destroy any data already on it.

TFS3031 TekRanger/TekRanger 2 Service Manual

1–7

Operator Information

4. Push the  softkey again to confirm formatting.

If you insert an unformatted disk while already in file storage, steps 2, 3, and 4 are displayed when you use the Save, Load, Copy, Delete, or Print file options that involve accessing the floppy disk (when toggling the  softkey).

Updating the Instrument Software

1. Connect the power/charger adapter.

2. Press the SELECT, HELP, and ON/OFF buttons simultaneously.

3. Insert the appropriate language software disk into the instruments disk drive.

4. Press START/STOP to initiate the upgrade.

5. When the upgrade is complete, press ON/OFF button to re-initialize the

instrument.

Power/Charger Adapter

Port

The power/charger adapter port (2.5 mm DIN), located on top of the TFS3031, connects to the power/charger adapter and optional cigarette lighter adapter cable.

The power/charger adapter recharges the NiCad battery and powers the instrument independent of the battery.

The battery must be charged before first use, and recharged at low-battery warning. See page 1–12 for battery recharging instructions.

CAUTION. Do not connect the power/charger adapter or cigarette lighter adapter

cable to the TFS3031 when the ambient temperature exceeds 40

C (1040 F).

1–8

TFS3031 TekRanger/TekRanger 2 Service Manual

+ 240 hidden pages