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Tektronix TekRanger 2 TFS3031, Service Manual

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Table of Contents

TFS3031 TekRanger/TekRanger 2 Service Manual

iii

Singlemode Range Test Fixture

4–6

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

Singlemode Dead-Zone Test Fixture

4–7

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

Singlemode Reflectance Test Fixture

4–9

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

Singlemode Loss and Distance Accuracy Test Fixture

4–10

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

Multimode Dynamic-Range Test Fixture

4–11

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

Multimode Event-Detection and Dead-Zone Test 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

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

Maintenance

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

Replaceable Parts

6–1

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

Parts Ordering Information

6–1

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

Using the Replaceable Parts List

6–2

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

Wire and Cable Assemblies

6–12

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

Index

Summary of Contents for TekRanger 2 TFS3031

Page 1: ...uy your excess underutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing R...

Page 2: ...flectometer 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...

Page 3: ...and foreign patents issued and pending Information in this publication supercedes that in all previously published material Specifications and price change privileges reserved Tektronix Inc P O Box 50...

Page 4: ...are 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 th...

Page 5: ......

Page 6: ...arging 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 Ni...

Page 7: ...ment Required for Performance Check 3 1 Adjustments 3 2 Test Descriptions 3 2 Singlemode Event Detection Test Fixture Build Description 3 6 Singlemode Dynamic Range Test Fixture Build Description 3 9...

Page 8: ...inglemode 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 5...

Page 9: ...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...

Page 10: ...est 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 Widt...

Page 11: ...e Manual 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...

Page 12: ...zontal 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 Ra...

Page 13: ...310 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...

Page 14: ...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 H...

Page 15: ...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 8...

Page 16: ...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 T...

Page 17: ...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 S...

Page 18: ...l and is invisible to the human eye The TFS3031 is classified as a I laser product under the Radiation Control and Health Safety Act of 1968 and complies with 21 CFR 1040 10 and 1040 11 Even though th...

Page 19: ...ilures 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...

Page 20: ...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 Recyc...

Page 21: ...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...

Page 22: ...ains the TekRanger 2 performance check All other service information in this manual is generic to both versions of the TFS3031 Contacting Tektronix Phone 1 800 833 9200 Address Tektronix Inc Departmen...

Page 23: ...Diagram Illustration showing the modules and their intercon nects H Performance Check TekRanger Procedures for checking that the TFS3031 TekRanger operates properly This section applies to instruments...

Page 24: ...nual 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...

Page 25: ...ment 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 I...

Page 26: ...to instruments with serial numbers below B052000 H Section 4 Performance Check TekRanger 2 Checks TFS3031 performance to verify correct operation after repairs and adjustments have been made This sect...

Page 27: ...Module Level Service 1 4 TFS3031 TekRanger TekRanger 2 Service Manual...

Page 28: ...BLE 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...

Page 29: ...nnector 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 f...

Page 30: ...k 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...

Page 31: ...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 The power charger adapter port 2 5 mm DIN located...

Page 32: ...it help The START STOP button starts a test and stops a test in progress In Manual mode hold down the START STOP button for at least two seconds for real time continuous testing CAUTION Do not fire th...

Page 33: ...character to the left of the cursor Delete Del keypad Delete the character that the cursor is on Home Move the cursor to the beginning of the text being edited End Move cursor to the end of the text...

Page 34: ...connection instructions Do not connect the power charger adapter or cigarette lighter adapter cable to the TFS3031 when the ambient temperature exceeds 400 C 1040 F Doing so may exceed safe charging t...

Page 35: ...charge to maintain the full charge level Power Charger Adapter Use the power charger adapter to recharge the battery see Figure 1 2 on page 1 13 As long as the power charger adapter is plugged into a...

Page 36: ...er adapter TEK RANGER LASER BATTERY HELP ON OFF START STOP Power charger adapter plug Flashing red LED indicates low battery Flashing green LED indicates battery being recharged Figure 1 2 NiCad Batte...

Page 37: ...may be powered on and operated during recharging However recharging time will take longer Tips for Maximizing Battery Life H Turn off the backlight or set a brief backlight blanking time using the Bac...

Page 38: ...Individual cells are not replaceable 4 Install the new battery by reversing the removal sequence When a NiCad battery is disconnected then reconnected or a new NiCad battery is installed the battery...

Page 39: ...Battery Recharging and Replacement 1 16 TFS3031 TekRanger TekRanger 2 Service Manual...

Page 40: ...constraints at product introduction The PRT is controlled by design of the software and does not need to be checked in production Optical Output Wavelength 850 30 nm Spectral mean or center of mass O...

Page 41: ...eflections may clip above 40 dB Table 1 6 Measurement Range 850 nm Multimode Options 01 and 03 Characteristic Performance Requirement Supplemental Information Loss Threshold dB 0 1 0 5 1 Typical 25 dB...

Page 42: ...0 5 dB front panel loss is assumed Temperature Coefficient of Dynamic Range 0 15 dB oC for T 25o C typical 1 RMS in this test is defined as the standard deviation Table 1 9 Horizontal System Dead Zone...

Page 43: ...n Manufacturing and on instruments that are repaired in Service Intellitrace only Does not take into account errors in index of refraction and cabling factor Table 1 12 Sample Density Pulsewidth and R...

Page 44: ...ects hardware software constraints at product introduction The PRT is controlled by design of the software and does not need to be checked in production Optical Output Wavelength 1300 30 nm Spectral m...

Page 45: ...ions may clip above 40 dB 1 1 2 Measurement Range 1300 nm Multimode Option 03 Characteristic Performance Requirement Supplemental Information Loss Threshold dB 0 1 0 5 1 Measurement Range dB typical 1...

Page 46: ...fined as the difference between the extrapolated backscatter level at the start of the fiber and the 98 level of the noise Measured using a 62 5 m 0 28 NA GI fiber after 3 minutes of averaging A 0 5 d...

Page 47: ...n 40 dB reflectance Based on 62 5 m 0 28 NA GI fiber Event Dead Zone Pulse Width 100 m 50 m 20 m 10 m 5 m 1 m CG typical 120 m 110 m 60 m 50 m 30 25 m 15 m 12 m 8 m 6 m 5 m 3 m Event dead zone is defi...

Page 48: ...25 m 50 20 10 m 1x D D D D D 1 25 m 20 20 5 m 2x D D D D D 1 25 m 10 20 2 5 m 4x D D D D D 1 25 m 5 20 1 25 m 8x D D D D 1 25 m 1 35 25 cm 40x D D D 25 cm Note 1 Bandwidth is chosen based on a 3x mini...

Page 49: ...10 5 1 meters Pulse Repetition Rate Range 160 km 80 km 40 km 20 km 10 km 5 km 2 km 1 km Minimum specified values 1600 ms 800 ms 400 ms 200 ms 100 ms 50 ms 20 ms 10 ms Optical Output Wavelength 1310 20...

Page 50: ...Minimum Typical 10 13 18 20 20 22 21 23 IntelliTrace mode averaging and analysis less than 3 minutes For isolated nonreflective event or grouped NR reflective events Reflective event return loss 40 d...

Page 51: ...1 m SNR 1 Typical 26 dB 28 dB 23 dB 21 dB 24 dB 14 5 dB 13 dB 10 dB 8 5 dB 7 dB 2 5 Dynamic range SNR 1 is defined as the difference between the extrapolated backscatter level at the start of the fib...

Page 52: ...ad zone is defined as the distance between the initial and final points where the backscatter level is disrupted beyond 0 5 dB due to encountering a single reflective event Based on reflective event w...

Page 53: ...c Performance Requirement Supplemental Information Distance Span Manual Mode Pulsewidth 2000 m 1000 m 500 m 100 m 50 m 20 m 10 m 5 m 1 m 160 km 160 km 80 km 40 km 40 km 20 km 10 km 5 km 1 km Distance...

Page 54: ...25 m 100 5 10 m 1x D D D D D D 1 25 m 50 5 10 m 1x D D D D D D D 1 25 m 20 17 5 m 2x D D D D D D D 1 25 m 10 17 2 5 m 4x D D D D D 1 25 m 5 17 1 25 m 8x D D D D D 1 25 m 1 35 25 cm 40x D D D 25 cm Not...

Page 55: ...eters Pulse Repetition Rate Range 160 km 80 km 40 km 20 km 10 km 5 km 2 km 1 km Minimum specified values 1600 ms 800 ms 400 ms 200 ms 100 ms 50 ms 20 ms 10 ms Optical Output Wavelength 1550 20 nm Spec...

Page 56: ...Minimum Typical 9 11 16 18 18 20 19 21 IntelliTrace mode averaging and analysis less than 3 minutes For isolated nonreflective event or grouped NR reflective events Reflective event return loss 40 dB...

Page 57: ...SNR 1 Typical 24 dB 26 dB 21 5 dB 20 dB 22 dB 13 dB 11 5 dB 8 dB 6 5 dB 5 dB 1 dB Dynamic range SNR 1 is defined as the difference between the extrapolated backscatter level at the start of the fiber...

Page 58: ...is defined as the distance between the initial and final points where the backscatter level is disrupted beyond 0 5 dB due to encountering a single reflective event Based on reflective event with no g...

Page 59: ...rformance Requirement Supplemental Information Distance Span Manual Mode Pulsewidth 2000 m 1000 m 500 m 100 m 50 m 20 m 10 m 5 m 1 m 160 km 160 km 80 km 40 km 40 km 20 km 10 km 5 km 1 km Distance span...

Page 60: ...25 m 100 5 10 m 1x D D D D D D 1 25 m 50 5 10 m 1x D D D D D D D 1 25 m 20 17 5 m 2x D D D D D D D 1 25 m 10 17 2 5 m 4x D D D D D 1 25 m 5 17 1 25 m 8x D D D D D 1 25 m 1 35 25 cm 40x D D D 25 cm Not...

Page 61: ...5 1 meters Pulse Repetition Rate Range 160 km 80 km 40 km 20 km 10 km 5 km 2 km 1 km Minimum specified values 1600 ms 800 ms 400 ms 200 ms 100 ms 50 ms 20 ms 10 ms Optical Output Wavelength 1310 20 n...

Page 62: ...B Minimum Typical 14 17 22 24 24 26 25 27 IntelliTrace mode averaging and analysis less than 3 minutes For isolated nonreflective event or grouped NR reflective events Reflective event return loss 40...

Page 63: ...SNR 1 Typical 30 dB 32 dB 28 dB 25 dB 28 dB 19 5 dB 18 dB 15 dB 13 5 dB 12 dB 7 5 dB Dynamic range SNR 1 is defined as the difference between the extrapolated backscatter level at the start of the fib...

Page 64: ...ad zone is defined as the distance between the initial and final points where the backscatter level is disrupted beyond 0 5 dB due to encountering a single reflective event Based on reflective event w...

Page 65: ...Performance Requirement Supplemental Information Distance Span Manual Mode Pulsewidth 2000 m 1000 m 500 m 100 m 50 m 20 m 10 m 5 m 1 m 160 km 160 km 80 km 40 km 40 km 20 km 10 km 5 km 1 km Distance s...

Page 66: ...25 m 100 5 10 m 1x D D D D D D 1 25 m 50 5 10 m 1x D D D D D D D 1 25 m 20 17 5 m 2x D D D D D D D 1 25 m 10 17 2 5 m 4x D D D D D 1 25 m 5 17 1 25 m 8x D D D D 1 25 m 1 35 25 cm 40x D D D 25 cm Note...

Page 67: ...5 1 meters Pulse Repetition Rate Range 160 km 80 km 40 km 20 km 10 km 5 km 2 km 1 km Minimum specified values 1600 ms 800 ms 400 ms 200 ms 100 ms 50 ms 20 ms 10 ms Optical Output Wavelength 1550 20 n...

Page 68: ...dB Minimum Typical 13 15 20 22 22 24 23 25 IntelliTrace mode averaging and analysis less than 3 minutes For isolated nonreflective event or grouped NR reflective events Reflective event return loss 4...

Page 69: ...SNR 1 Typical 28 dB 30 dB 26 dB 24 dB 26 dB 18 dB 16 5 dB 13 dB 11 5 dB 10 dB 5 5 dB Dynamic range SNR 1 is defined as the difference between the extrapolated backscatter level at the start of the fi...

Page 70: ...d zone is defined as the distance between the initial and final points where the backscatter level is disrupted beyond 0 5 dB due to encountering a single reflective event Based on reflective event wi...

Page 71: ...Performance Requirement Supplemental Information Distance Span Manual Mode Pulsewidth 2000 m 1000 m 500 m 100 m 50 m 20 m 10 m 5 m 1 m 160 km 160 km 80 km 40 km 40 km 20 km 10 km 5 km 1 km Distance s...

Page 72: ...25 m 100 5 10 m 1x D D D D D D 1 25 m 50 5 10 m 1x D D D D D D D 1 25 m 20 17 5 m 2x D D D D D D D 1 25 m 10 17 2 5 m 4x D D D D D 1 25 m 5 17 1 25 m 8x D D D D 1 25 m 1 35 25 cm 40x D D D 25 cm Note...

Page 73: ...5 1 meters Pulse Repetition Rate Range 160 km 80 km 40 km 20 km 10 km 5 km 2 km 1 km Minimum specified values 1600 ms 800 ms 400 ms 200 ms 100 ms 50 ms 20 ms 10 ms Optical Output Wavelength 1550 20 n...

Page 74: ...W 0 05 500 m 0 2 2000 m 0 5 2000 m 1 2000 m Measurement Range dB Minimum Typical 17 18 22 23 24 25 25 26 IntelliTrace mode averaging and analysis less than 5 minutes For isolated nonreflective event o...

Page 75: ...m SNR 1 Typical 30 dB 31 dB 29 dB 28 dB 29 dB 21 dB 19 dB 16 dB 14 5 dB 13 dB 8 5 dB Dynamic range SNR 1 is defined as the difference between the extrapolated backscatter level at the start of the fib...

Page 76: ...d zone is defined as the distance between the initial and final points where the backscatter level is disrupted beyond 0 5 dB due to encountering a single reflective event Based on reflective event wi...

Page 77: ...Performance Requirement Supplemental Information Distance Span Manual Mode Pulsewidth 2000 m 1000 m 500 m 100 m 50 m 20 m 10 m 5 m 1 m 160 km 160 km 80 km 40 km 40 km 20 km 10 km 5 km 1 km Distance s...

Page 78: ...25 m 100 5 10 m 1x D D D D D D 1 25 m 50 5 10 m 1x D D D D D D D 1 25 m 20 17 5 m 2x D D D D D D D 1 25 m 10 17 2 5 m 4x D D D D D 1 25 m 5 17 1 25 m 8x D D D D 1 25 m 1 35 25 cm 40x D D D 25 cm Note...

Page 79: ...current 5 A for 75 ms 1 Backlight off acquire IntelliTrace waveform review 1 minute add comments 2 minutes save to internal storage set up for next acquisition 2 minutes repeat Display Readout Resolut...

Page 80: ...HP ThinkJet HP LaserJet HP DeskJet PostScript Parallel Port 25 Pin female D Subminiature Standard PC type parallel printer interface Printers Supported Epson Seiko DPU411 HP ThinkJet HP LaserJet HP D...

Page 81: ...he exception of the humidity limits Maximum wet bulb temperature 40o C 104o F Maximum wet bulb temperature 40o C 104o F Maximum wet bulb temperature 29 4o C 85o F Maximum wet bulb temperature 40o C 10...

Page 82: ...tation all sides and corners Surface concrete Duration 14 total drops Test per Bellcore TR NWT 001138 EMC Emissions Radiated Emissions Power Harmonic Conducted Emissions Immunity Electrostatic Dischar...

Page 83: ...Specifications TekRanger serial nos below B052000 1 60 TFS3031 TekRanger TekRanger 2 Service Manual...

Page 84: ...t product introduction Controlled by system software and not directly checked in the performance verification procedure Optical Output Wavelength 850 30 nm Spectral mean or center of mass provided by...

Page 85: ...er Loss 0 1 dB dB typical 3 minute average For events 10 dB above 98 noise floor 95 confidence Reflectance 2 dB typical Non clipped reflection Table 1 68 Single Event Distance Measurement Repeatabilit...

Page 86: ...xtrapolated backscatter level at the start of the fiber and the 98 level of the noise DR 98 DR SNR 1 1 5 dB Measured using a 62 5 m 0 28 NA GI fiber after 3 minutes of averaging A 0 5 dB front panel l...

Page 87: ...62 5 m 0 28 NA GI fiber Event Dead Zone Pulse Width 10 m 5 m 1 m typical 19 m 11 m 7 m 5 m 3 5 m Event dead zone is defined as the distance between the initial and final points where the reflected pul...

Page 88: ...20 1 25 m 8x D D D D 1 25 m 1 35 25 cm 40x D D D 25 cm Note 1 Bandwidth is chosen based on a 3x minimum bandwidth required for pulse width resolution The minimum bandwidth is given by b 0 35 10 Note 2...

Page 89: ...software constraints at product introduction Controlled by system software and not directly checked in the performance verification procedure Optical Output Wavelength 1300 30 nm Spectral mean or cent...

Page 90: ...ental Information Loss Threshold dB 0 5 Typical 22dB IntelliTrace mode averaging and analysis less than 3 minutes plus 15 seconds per event Measurement range determined as a result of dynamic range te...

Page 91: ...SNR 1 Dynamic range SNR 1 is defined as the difference between the extrapolated backscatter level at the start of the fiber and the RMS1 noise floor Dynamic range 98 is defined as the difference betw...

Page 92: ...fiber Event Dead Zone Pulse Width 100 m 50 m 20 m 10 m 5 m 1 m typical 110 m 50 m 25 m 15 m 12 m 6 m 7 m 3 5 m Event dead zone is defined as the distance between the initial and final points where the...

Page 93: ...gh Density Width m MHz 1 Sample Spacing2 Interleave Factor3 40 20 10 4 2 1 Density Sample Spacing 100 5 10 m 1x D D D D 1 25 m 50 20 10 m 1x D D D D D 1 25 m 20 20 5 m 2x D D D D D 1 25 m 10 20 2 5 m...

Page 94: ...Pulse Repetition Rate Range 160 km 80 km 40 km 20 km 10 km 5 km 2 km 1 km Minimum specified values 1600 ms 800 ms 400 ms 200 ms 100 ms 50 ms 20 ms 10 ms Optical Output Wavelength 1310 20 nm Spectral m...

Page 95: ...nt Repeatability1 Standard 1310 nm Singlemode Options 04 and 06 Characteristic Performance Requirement Supplemental Information Range from Front Panel dB 0 to 1 5 1 5 to DR4 8 DR 8 to DR Reflective2 t...

Page 96: ...dB 14 dB 12 5 dB 11 dB 7 5 dB SNR 1 Dynamic range SNR 1 is defined as the difference between the extrapolated backscatter level at the start of the fiber and the RMS noise level Measured using a 4 km...

Page 97: ...initial and final points where the backscatter level is disrupted beyond 0 5 dB due to encountering a single reflective event Based on reflective event with no greater than 40 dB reflectance Based on...

Page 98: ...Distance Span Manual Mode Pulsewidth 2000 m 1000 m 500 m 200 m 100 m 50 m 20 m 10 m 5 m 1 m 80 km 80 km 80 km 80 km 40 km 40 km 20 km 10 km 5 km 1 km Distance span is defined as the length of the data...

Page 99: ...D D D D D 1 25 m 20 17 5 m 2x D D D D D D D 1 25 m 10 17 2 5 m 4x D D D D D 1 25 m 5 17 1 25 m 8x D D D D D 1 25 m 1 35 25 cm 40x D D D 25 cm Note 1 Bandwidth is chosen based on a 3x minimum bandwidt...

Page 100: ...petition Rate Range 160 km 80 km 40 km 20 km 10 km 5 km 2 km 1 km Minimum specified values 1600 ms 800 ms 400 ms 200 ms 100 ms 50 ms 20 ms 10 ms Optical Output Wavelength 1625 20 nm Spectral mean or c...

Page 101: ...Repeatability1 Standard 1550 nm Singlemode Option 06 Characteristic Performance Requirement Supplemental Information Range from Front Panel dB 0 to 1 5 1 5 to DR4 8 DR 8 to DR Reflective2 typical 2 5...

Page 102: ...dB 14 5 dB 13 dB 9 dB SNR 1 Dynamic range SNR 1 is defined as the difference between the extrapolated backscatter level at the start of the fiber and the RMS noise level Based on high APD and amplifie...

Page 103: ...disrupted beyond 0 5 dB due to encountering a single reflective event Based on reflective event with no greater than 40 dB reflectance Based on 9 m 0 1 NA SM fiber Event Dead Zone Pulsewidth 2000 m 1...

Page 104: ...istance Span Manual Mode Pulsewidth 2000 m 1000 m 500 m 200 m 100 m 50 m 20 m 10 m 5 m 1 m 80 km 80 km 80 km 80 km 40 km 40 km 20 km 10 km 5 km 1 km Distance span is defined as the length of the data...

Page 105: ...D D D D D D 1 25 m 20 17 5 m 2x D D D D D D D 1 25 m 10 17 2 5 m 4x D D D D D 1 25 m 5 17 1 25 m 8x D D D D D 1 25 m 1 35 25 cm 40x D D D 25 cm Note 1 Bandwidth is chosen based on a 3x minimum bandwid...

Page 106: ...petition Rate Range 240 km 160 km 80 km 40 km 20 km 10 km 5 km 2 km 1 km Minimum specified values 2400 ms 1600 ms 800 ms 400 ms 200 ms 100 ms 50 ms 20 ms 10 ms Optical Output Wavelength 1310 20 nm 162...

Page 107: ...t Repeatability1 Extended Range 1310 1550 nm Singlemode Option 10 Characteristic Performance Requirement Supplemental Information Range from Front Panel dB 0 to 1 5 1 5 to DR4 8 DR 8 to DR Reflective2...

Page 108: ...ic range SNR 1 is defined as the difference between the extrapolated backscatter level at the start of the fiber and the RMS noise level Based on high APD and amplifier gains Low APD gain reduces 4 dB...

Page 109: ...initial and final points where the backscatter level is disrupted beyond 0 5 dB due to encountering a single reflective event Based on reflective events with no greater than 40 dB reflectance Based o...

Page 110: ...tance Span Manual Mode Pulsewidth 3200 m 2000 m 1000 m 500 m 200 m 100 m 50 m 20 m 10 m 5 m 1 m 120 km 120 km 120 km 80 km 80 km 40 km 40 km 20 km 10 km 5 km 1 km Distance span is defined as the lengt...

Page 111: ...D D D D 1 25 m 50 5 10 m 1x D D D D D D D 1 25 m 20 17 5 m 2x D D D D D D D 1 25 m 10 17 2 5 m 4x D D D D D 1 25 m 5 17 1 25 m 8x D D D D D 1 25 m 1 35 25 cm 40x D D D 25 cm Note 1 Bandwidth is chosen...

Page 112: ...Range 240 km 160 km 80 km 40 km 20 km 10 km 5 km 2 km 1 km Minimum specified values 2400 ms 1600 ms 800 ms 400 ms 200 ms 100 ms 50 ms 20 ms 10 ms Optical Output Wavelength 1625 20 nm Spectral mean or...

Page 113: ...ise floor 95 confidence Reflectance Non clipped reflection 4 dB typical Meets or exceeds Bellcore GR 196 CORE Table 1 114 Single Event Distance Measurement Repeatability1 1625 nm Singlemode Option 12...

Page 114: ...defined as the difference between the extrapolated backscatter level at the start of the fiber and the RMS noise level Based on high APD and amplifier gains Low APD gain reduces 4 dB Low amplifier gai...

Page 115: ...s defined as the distance between the initial and final points where the backscatter level is disrupted beyond 0 5 dB due to encountering a single reflective event Based on reflective events with no g...

Page 116: ...pan Manual Mode Pulsewidth 3200 m 2000 m 1000 m 500 m 200 m 100 m 50 m 20 m 10 m 5 m 1 m 120 km 120 km 120 km 80 km 80 km 40 km 40 km 20 km 10 km 5 km 1 km Distance span is defined as the length of th...

Page 117: ...D D D D 1 25 m 50 5 10 m 1x D D D D D D D 1 25 m 20 17 5 m 2x D D D D D D D 1 25 m 10 17 2 5 m 4x D D D D D 1 25 m 5 17 1 25 m 8x D D D D D 1 25 m 1 35 25 cm 40x D D D 25 cm Note 1 Bandwidth is chosen...

Page 118: ...10 W Inrush current 5 A for 75 ms 1 Backlight off acquire IntelliTrace waveform review 1 minute add comments 2 minutes save to internal storage set up for next acquisition 2 minutes repeat Display Rea...

Page 119: ...HP ThinkJet HP LaserJet HP DeskJet PostScript Parallel Port 25 Pin female D Subminiature Standard PC type parallel printer interface Printers Supported Epson Tek HC411 HP ThinkJet HP LaserJet HP DeskJ...

Page 120: ...062 2847 00 Class 3 with the exception of the humidity limits Maximum wet bulb temperature 40o C 104o F Maximum wet bulb temperature 40o C 104o F Maximum wet bulb temperature 29 4o C 85o F Maximum wet...

Page 121: ...k Vibration Drop Nonoperating Tek 062 2858 00 Test per Tek 062 2858 00 distribution cycle 1 with the exception of increasing the drop height to 30 inches per Bellcore GR 196 CORE Hard Carrying Case Dr...

Page 122: ...ith the product s stated in the specifications table Refer to the EMC specification published for the stated products May not meet the intent of the directive if used with other products FCC Complianc...

Page 123: ...y condensation must be expected This location is a typical office home environment Temporary condensation occurs only when the product is out of service Pollution Degree Pollution Degree 3 Conductive...

Page 124: ...rence Card 063 2096 xx Power Charger Adapter 119 4545 01 Power Cord for Power Charger Adapter 120 Volt USA and Canada only or 100 Volt Japan only 161 0228 00 161 0288 00 Soft Carrying Case w Battery S...

Page 125: ...Long for PC AT DB9F DB9F Null 012 1379 00 DB25 Centronics Parallel Printer Cable Seiko Style 3 Meters Long 012 1214 00 Test Data Storage TDS PC Software for transfer ring files from TFS3031 to PC Inc...

Page 126: ...option L1 French language option includes French user manual 070 9507 xx and quick reference card 063 1839 xx L2 Italian language option includes Italian user manual 070 9587 xx and quick reference ca...

Page 127: ...40 V Australia A4 220 V North American A5 220 V Switzerland A6 100 V Japan A99 No Power Cord Supplied Table 1 125 Laser Output Port Options Option Number Optical Port 01 850 nm Multimode 03 Dual Wavel...

Page 128: ...5154 00 43 E 2000 APC1 119 5164 00 44 ST APC1 119 5888 00 45 DIN APC1 119 5887 00 1 Angle polish connector adapters singlemode options 41 through 45 cannot be interchanged with any of the other connec...

Page 129: ...Accessories and Options 1 106 TFS3031 TekRanger TekRanger 2 Service Manual...

Page 130: ...rt Optical Analog Digital DSP Control Logic Acquisition Algorithms Serial Power Supply Board Analog Digital Software Power Management Keypad Keypad MAIN31 Board Digital Subsystem Software User I F Con...

Page 131: ...collect waveform data and communicate with the main board Commands from the main board tell the SMDAS and MMDAS boards what settings to use and when to collect waveform data The SMDAS and MMDAS board...

Page 132: ...and LCD contrast It receives data from the SMDAS MMDAS and power supply boards performs event analysis and provides data to the user through the LCD the serial port and the parallel port The main boar...

Page 133: ...Theory of Operation 2 4 TFS3031 TekRanger TekRanger 2 Service Manual...

Page 134: ...n algorithms This is done by using the performance test software housed on a floppy disk See Table 1 127 on page 1 105 for the performance test software part number An IBM compatible PC 386 or better...

Page 135: ...equired in the TFS3031 CAUTION Do not attempt to adjust any potentiometers on the optical module assemblies All adjustments are optimized for peak performance Any increase in laser drive current or de...

Page 136: ...asure the noise floor without using a computer For this reason software is available to assist with dynamic range measurements The TFS3031 provides data in dB units so the computer must antilog the da...

Page 137: ...n specification by physically moving two reflective events closer together until there is only a 1 5 dB dip between events this is difficult to do An alternate method is to measure the displayed pulse...

Page 138: ...ns that appear on the fiber backscatter waveform The measurement should include any noise or error resulting from the reflective event such as undershoot on the waveform before the reflective event no...

Page 139: ...Connector 1 km 7 km Distance km Cumulative loss db Idealized Fiber Waveform Connector 1 km 25 km 10 km 10 km 0 50 dB TFS3031 NRE 0 15 dB NRE 0 15 dB NRE 0 50 dB NRE 0 5 dB 2 km 0 15 dB NRE Figure 3 1...

Page 140: ...r loss at 1310 nm 2 Does not include connection at front panel H All splices with a nominal loss of 0 5 dB have a splice loss tolerance of 0 100 0 000 dB Splices with no loss specification are less th...

Page 141: ...H HH HH HH H H H HH H H H H H H H H H H H H H H H H H H H H H HH H H H H H H Loss dB Distance m Figure 3 2 Scatter Plot for 50 m Event Once the data points are gathered a confidence area can be drawn...

Page 142: ...cription Material required H 3 9 km spool of Corning SMF 28 singlemode optical fiber H 4 4 km spool of Corning SMF 28 singlemode optical fiber H Two dual wavelength 1310 1550 nm fiber multiplexers H D...

Page 143: ...fy the 95 percent output fiber of the 5 95 percent splitter and prepare and fusion splice this fiber to one end of the 4 4 km fiber spool splice 3 Protect the splice using an appropriate splice protec...

Page 144: ...until 40 db 1 dB is obtained Remove the splice from the fusion splicer and protect the splice with an appropriate splice protection device 10 Identify the 1550 fibers on each of the multiplexers The...

Page 145: ...nce is 40 dB 1 dB Multimode Dynamic Range Test Fixture The multimode dynamic range test fixture consists of 4 4 to 8 8 kilometers of 62 5 125 m fiber with connectors and fusion splices as shown below...

Page 146: ...m 62 5 125 m multimode fiber Figure 3 6 Multimode Event Detection and Dead Zone Test Fixture 1 To create non reflective events perform multiple arcs on the fusion splice until the desired loss is obt...

Page 147: ...ekRanger serial nos below B052000 3 14 TFS3031 TekRanger TekRanger 2 Service Manual 34 32 28 24 20 16 12 0 000 1 000 2 000 3 000 dB km 1 2 3 4 5 Figure 3 7 Multimode Event Detection and Dead Zone Test...

Page 148: ...s a fiber is connected to the Laser Output port Damage to internal electronics can result 1 Connect the power charger adapter to the TFS3031 and a suitable AC power source 2 Attach the connector adapt...

Page 149: ...low B052000 3 16 TFS3031 TekRanger TekRanger 2 Service Manual Power On Initialization Check Push the button to power on the TFS3031 This power on screen indicates successful initialization and shows t...

Page 150: ...dapter is connected to a fully charged battery the BATTERY LED should glow a steady green If the main software is version M4 10 or later question marks are displayed for about 10 seconds after disconn...

Page 151: ...ormat by pushing the softkey b To format the disk push the softkey A final yes no confirmation prompt is displayed along with a notice that formatting the disk will destroy any data already on it c Pu...

Page 152: ...eyboard light up for about two seconds then turn off This indicates that keyboard power is available 3 Press F1 on the keyboard This should have the same effect as pressing softkey 1 the uppermost sof...

Page 153: ...he software package The software pseudo code is as follows 1 In the setups menus set Fiber Scan to Manual Pulsewidth to 2 km the first of four different pulsewidth settings and Averages to 256 2 Push...

Page 154: ...ng mode a Push the Setup softkey to access the setup menus b Push the SELECT button to choose the Test setup c Use the arrow keys to select the Fiber Scan IntelliTrace setup d Push the Exit softkey to...

Page 155: ...d Zoom options to select a single event on the fiber for zooming then push the Zoom On softkey to magnify the event 7 Use the SELECT button Cursor option to position the active cursor on the backscatt...

Page 156: ...t part of the rising edge of the pulse of the event in question 13 The Cursor A B reading at top screen is the attenuation dead zone 14 Position the two cursors so they are 1 5 dB down from the peak o...

Page 157: ...The software pseudo code is as follows 1 In the setups menus set Fiber Scan to Manual Pulsewidth to the longest pulse width available for the current wavelength and Averages to 256 2 Push the button...

Page 158: ...elliTrace operating mode a Push the Setup softkey to access the setup menus b Push the SELECT button to choose the Test setup c Use the arrow keys to select the Fiber Scan IntelliTrace setup d Push th...

Page 159: ...or and Zoom options to select a single event on the fiber for zooming then push the Zoom On softkey to magnify the event 7 Use the SELECT button Cursor option to position the active cursor on the back...

Page 160: ...ge of the pulse of the event in question 13 The Cursor A B reading at top screen is the attenuation dead zone 14 Position the two cursors so they are 1 5 dB down from the peak of the reflection on eit...

Page 161: ...e compare the distance to event number two in the TFS3031 event table to the known distance to the end of the multi mode fiber This distance should be within the distance tolerance in the specificatio...

Page 162: ...H Power charger adapter standard accessory included with the TFS3031 H ST PC connector adapter installed on multimode output port H FC PC connector adapter installed on singlemode output port H FC APC...

Page 163: ...are optimized for peak performance Any increase in laser drive current or detector bias may result in damage to the device Test Descriptions Dynamic range is a measure of signal to noise ratio for an...

Page 164: ...the characteristics of event detection depend on signal level and noise level which can degrade as lasers age and as the front panel optical connector becomes worn or damaged This second group of char...

Page 165: ...ween events this is difficult to do An alternate method is to measure the displayed pulse width from a reflection 1 5 dB below the peak This alternate measurement works well when the rise and fall tim...

Page 166: ...tio of the reflected power Pr to the incident power Pi at any specific point or event on an optical fiber In dB reflectance is the 10 log of the ratio of the reflected power divided by the incident po...

Page 167: ...to verify measurement range and dynamic range Overall it consists of six 25 km segments of Corning SMF28 fiber intercon nected with 1 m jumpers The fixture is to have no more than 48 dB end to end los...

Page 168: ...djusted when built to give a 40dB reflection at each wavelength Figure 4 2 Singlemode Dead Zone Test Fixture Assemble and characterize this fixture as follows 1 Fusion splice an FC PC connector to one...

Page 169: ...Press START STOP to acquire a waveform 15 Position the active cursor on the reflection at 1 1 km 16 Press the EXPAND button to expand the view 17 Use the vertical and horizontal SIZE knobs to adjust...

Page 170: ...ber including H JDS Fitel BR1 variable backreflector with FC APC connector H FC PC connector PORT A FC PC Connector FC APC Connector SM Fiber 2 4km BR1 Variable Backreflector Figure 4 3 TFS3031 Single...

Page 171: ...is fixture as follows 1 Fusion splice the FC PC connector to one end of the 4 4 km spool of Corning SMF28 singlemode fiber 2 Fusion splice an FC APC connector to the opposite end of this spool 3 Fusio...

Page 172: ...nge Test Fixture The multimode dynamic range test fixture consists of 8 8 kilometers of 62 5 125 m fiber with connectors and fusion splices as shown below 62 5 125 m multimode FC connector 62 5 125 m...

Page 173: ...5 m multimode ST connector 500 m x 2 62 5 125 m multimode fiber Denotes cleaved end Denotes splice 1 2 3 4 5 700 m 500 m 62 5 125 m multimode fiber Figure 4 6 Multimode Event Detection and Dead Zone T...

Page 174: ...e using a large number approximately 40 units of identically configured TFS3031 instruments Each instrument is connected to the fixture Scan the fiber at least five times with each instrument Scatter...

Page 175: ...e area can be drawn so that 95 percent of all subsequent data will fall within the area The suggested area corresponds to the 1 96 limits of a Gaussian distribution The confidence of the location of e...

Page 176: ...and above TFS3031 TekRanger TekRanger 2 Service Manual 4 15 The location confidence range calculated by the above formula is the range on either side of a sample mean where 95 percent of the measurem...

Page 177: ...h the button unless a fiber is connected to the Laser Output port Damage to internal electronics can result 1 Connect the power charger adapter to the TFS3031 and a suitable AC power source 2 Attach t...

Page 178: ...hat loss at the front panel connection is minimized 0 75 dB or less a Press the Setup softkey to display the Test Setup menu and set the range to 1 km and the pulse width to 5 m Press Exit b Press and...

Page 179: ...2 Service Manual Power On Initialization Check Push the ON OFF button to power on the TFS3031 This power on screen indicates successful initialization and shows that all subsystems are operating prope...

Page 180: ...when the unit is first turned on The question marks are replaced by an estimate of operating time left if under battery power or the power plug indicator if connected to the power charger adapter or e...

Page 181: ...Performance Check TekRanger 2 serial nos B052000 and above 4 20 TFS3031 TekRanger TekRanger 2 Service Manual ON OFF HELP HOLD FOR REAL TIME LASER BATTERY Power plug indicator Battery LED...

Page 182: ...not to format by pushing the softkey b To format the disk push the softkey A final yes no confirmation prompt is displayed along with a notice that formatting the disk will destroy any data already on...

Page 183: ...e keyboard light up for about two seconds then turn off This indicates that keyboard power is available 3 Press F1 on the keyboard This should have the same effect as pressing softkey 1 the uppermost...

Page 184: ...km and the pulse width to 5 m Select 1550 wavelength 1310 if option 04 or 1625 if option 12 Press Exit b Press and hold the START STOP button to start a real time acquisition c If front panel loss is...

Page 185: ...r 2 serial nos B052000 and above 4 24 TFS3031 TekRanger TekRanger 2 Service Manual Figure 4 9 Singlemode Dynamic Range Test Waveform Longest Pulse Width 10 Press the Zoom On softkey to zoom into the f...

Page 186: ...Pulse Width Zero Intercept 12 Press Zoom Off to turn off zoom Press SELECT to highlight the cursor function then use the arrow keys to move cursor A to145 km 225 for option 10 13 Press and hold the C...

Page 187: ...the 98 noise level 18 Subtract 1 5 dB from the number noted in the previous step to calculate the SNR 1 noise level The SNR 1 noise level cannot be less than zero If the 98 noise level is 1 5 dB or le...

Page 188: ...m Select 1550 wavelength or 1310 if an option 04 or 1625 if option 12 Press Exit b Press and hold the START STOP button to start a real time acquisition c If front panel loss is greater than 0 75 dB c...

Page 189: ...nger TekRanger 2 Service Manual 9 When the waveform acquisition is complete you should see a waveform similar to the one in figure 4 12 Figure 4 12 Singlemode Dynamic Range Test Waveform 500 m Pulse W...

Page 190: ...se Width Zero Intercept 12 Press Zoom Off to turn off zoom Press SELECT to highlight the cursor function then use the arrow keys to move cursor A to160 km 13 Press and hold the Cursor A Cursor B softk...

Page 191: ...is the 98 noise level 19 Subtract 1 5 dB from the number noted in the previous step to calculate the SNR 1 noise level The SNR 1 noise level cannot be less than zero If the 98 noise level is 1 5 dB o...

Page 192: ...o 5 m Select 1550 wavelength 1310 if option 04 or 1625 if option 12 Press Exit b Press and hold the START STOP button to start a real time acquisition c If front panel loss is greater than 0 75 dB cle...

Page 193: ...nger TekRanger 2 Service Manual 9 When the waveform acquisition is complete you should see a waveform similar to the one in figure 4 15 Figure 4 15 Singlemode Dynamic Range Test Waveform 20 m Pulse Wi...

Page 194: ...e 4 16 Singlemode Dynamic Range Check 20 m Pulse Width Zero Intercept 12 Press Zoom Off to turn off zoom Press SELECT to highlight the cursor function then use the arrow keys to move cursor A to 76 km...

Page 195: ...t 1 5 dB from the number noted in the previous step to calculate the SNR 1 noise level The SNR 1 noise level cannot be less than zero If the 98 noise level is 1 5 or less the SNR 1 noise level is zero...

Page 196: ...and the pulse width to 5 m Select 1550 wavelength 1310 if option 04 or 1625 if option 12 Press Exit b Press and hold the START STOP button to start a real time acquisition c If front panel loss is gre...

Page 197: ...er 2 serial nos B052000 and above 4 36 TFS3031 TekRanger TekRanger 2 Service Manual 9 When the acquisition is complete you should see a waveform like the one shown in figure 4 18 Figure 4 18 Singlemod...

Page 198: ...re 4 19 Figure 4 19 Singlemode Dead Zone Check Reflection at 1 km 11 Press SELECT to select the cursor function then use the arrow keys to position cursor A at approximately 50 meters past the rising...

Page 199: ...it to the start of the pulse See figure 4 20 Figure 4 20 Singlemode Attenuation Dead Zone 15 The attenuation dead zone is the distance difference between cursors A and B 22 m in this example 16 Verif...

Page 200: ...TekRanger 2 Service Manual 4 39 17 Move cursor A to the highest point on the pulse See figure 4 21 Figure 4 21 Singlemode Event Dead Zone Check 18 Select cursor B and move it toward cursor A to the fi...

Page 201: ...22 Figure 4 22 Singlemode Event Dead Zone 20 The event dead zone is the distance difference between cursors A and B 15 m in this example 21 Verify that the event dead zone measurement is equal to or l...

Page 202: ...pulse width to 5 m Select 1550 wavelength or 1310 if option 04 Press Exit b Press and hold the START STOP button to start a real time acquisition c If front panel loss is greater than 0 75 dB clean t...

Page 203: ...gure 4 23 Singlemode Reflectance Test Waveform 12 Press the SELECT button to select the cursor function Use the arrow keys to position cursor A approximately at the start of the end reflection 13 Pres...

Page 204: ...lect the cursor function then use the arrow keys to position cursor A at the rising edge of the end reflection See figure 4 24 Figure 4 24 Singlemode Reflectance Check 15 Check the reflectance value d...

Page 205: ...ength or 1310 if option 04 Press Exit b Press and hold the START STOP button to start a real time acquisition c If front panel loss is greater than 0 75 dB clean the fiber connector and the laser outp...

Page 206: ...to 1 km and the pulse width to 5 m Select 1300 wavelength or 850 if option 01 Press Exit b Press and hold the START STOP button to start a real time acquisition c If front panel loss is greater than 0...

Page 207: ...FS3031 TekRanger TekRanger 2 Service Manual 8 Press the START STOP button The waveform should look like the one in figure 4 25 Figure 4 25 Multimode Range Test Fixture Trace Longest Pulse Width 9 Pres...

Page 208: ...h 11 Press Zoom Off to turn off zoom Press SELECT to highlight the cursor function then use the arrow keys to move cursor A to 16 km for 1300 nm or to 9 5 km for 850 nm 12 Press and hold the Cursor A...

Page 209: ...ss axis This is the 98 noise level 17 Subtract 1 5 dB from the number noted in the previous step to calculate the SNR 1 noise level The SNR 1 noise level cannot be less than zero If the 98 noise level...

Page 210: ...e range to 1 km and the pulse width to 5 m Select 1300 wavelength or 850 if option 01 Press Exit b Press and hold the START STOP button to start a real time acquisition c If front panel loss is greate...

Page 211: ...TFS3031 TekRanger TekRanger 2 Service Manual 8 Press the START STOP button The waveform should look like the one in figure 4 28 Figure 4 28 Multimode Range Test Fixture Trace 1 m Pulse Width 9 Press t...

Page 212: ...ltimode Dynamic Range Check Zero Intercept 1 m Pulse Width 11 Press Zoom Off to turn off zoom Press SELECT to highlight the cursor function then use the arrow keys to move cursor A to 9 6 km 12 Press...

Page 213: ...his is the 98 noise level 17 Subtract 1 5 dB from the number noted in the previous step to calculate the SNR 1 noise level The SNR 1 noise level cannot be less than zero If the 98 noise level is 1 5 d...

Page 214: ...k that loss at the front panel connection is minimized 0 75 dB or less a Press the Setup softkey to display the Test Setup menu and set the range to 1 km and the pulse width to 5 m Select 1300 wavelen...

Page 215: ...e 4 54 TFS3031 TekRanger TekRanger 2 Service Manual Figure 4 31 Multimode Event Detection Test Fixture Trace 9 When the test is complete press the Table Trace softkey to display the event table Figure...

Page 216: ...all events were detected and distance and loss measurements are correct and within tolerance If an event is not detected the first time repeat the test several times to determine that the missing even...

Page 217: ...Press Exit b Press and hold the START STOP button to start a real time acquisition c If front panel loss is greater than 0 75 dB clean the fiber connector and the laser output port 4 Press the Setup...

Page 218: ...nger 2 Service Manual 4 57 14 Move cursor B until the Cursor A B difference shown at the top of the screen is 0 5 dB or less Figure 4 33 Multimode Dead Zone Check Establishing the Backscatter Level 15...

Page 219: ...Dead Zone 17 The Cursor A B reading at the top of the screen is the attenuation dead zone 18 Verify that the attenuation dead zone measurement is equal to or less than the specifications for the wavel...

Page 220: ...f the pulse 22 The Cursor A B reading at the top of the screen is the event dead zone Figure 4 35 Multimode Event Dead Zone 23 Verify that the event dead zone measurement is equal to or less than the...

Page 221: ...lete compare the distance to event number two in the TFS3031 event table to the known distance to the end of the multi mode fiber This distance should be within the distance tolerance in the specifica...

Page 222: ...ause contamination and a fatal error message If index matching material is inadvertently used clean the laser output port and fiber connector thoroughly Do not use acetone on optical connectors WARNIN...

Page 223: ...t When the connector adapter is removed the laser output port is accessible for cleaning NOTE The connector adapter and laser output port are keyed for proper mating during reinstallation Unscrew conn...

Page 224: ...de alcohol and gently wipe across and around the port a couple of times Dry with a dry swap or dry part of the paper wipe If the port is extremely dirty repeat the procedure with a second lint free sw...

Page 225: ...rbent should be about 0 35 cm 0 15 inch in diameter and the wire part of the pipe cleaner should be less than 0 1 cm 0 04 inch in diameter 3 Gently insert the dampened pipe cleaner into the barrel of...

Page 226: ...and gently wipe across and around the connector a couple of times Dry with a dry swap or dry part of the paper wipe If the connector is extremely dirty repeat the procedure with a second lint free swa...

Page 227: ...disassembly make sure that the TFS3031 power is powered off and disconnected from any external power source NOTE This disassembly procedure assumes that two optical modules one singlemode and one mul...

Page 228: ...232C and parallel ports from side panel Torx T10 screw driver Remove screws from side panel Locktite 242 Securing screws and nuts during reassembly Locktite 414 Securing channel grommets to circuit bo...

Page 229: ...anger 2 Service Manual Electrical Modules Display module Power Supply board Singlemode Optical Module assembly Either Singlemode or Multimode Optical Module assembly MAIN31 board DC AC Converter board...

Page 230: ...9 Mechanical Parts Front panel assembly Top case half Circuit board holders 2 Bottom case half Side panel Laser output port bulkhead Battery Battery cover Stand Figure 5 6 Mechanical Parts Locator Ele...

Page 231: ...the side panel and Laser Output port bulkhead from the case halves at this time Remove the screws only 3 Use the 1 point Pozidrive screwdriver to remove 12 screws that attach the top case half to the...

Page 232: ...nel assembly flex cable from the Power Supply board by using your thumb and forefinger to pull out on the connector on the Power Supply board Note for reassembly that this connector has two small alig...

Page 233: ...Manual a Disconnect Display module cable from MAIN31 board b Disconnect Front Panel assembly flex cable from Power Supply board c Disconnect Display module cable from DC AC Converter board a c b d d D...

Page 234: ...tors on the Power Supply board NOTE If there are two optical module assemblies installed the multimode assembly will be in the lower port position and singlemode assembly in the upper port position un...

Page 235: ...tor from bottom case half Disconnect these battery and DC AC Converter board cables During reassembly make sure that the O ring is in place on the power charger adapter connector The O ring seals agai...

Page 236: ...rest of package The circuit boards snap apart from one another Disconnect these RS232C parallel and printer cables from MAIN31 board It is not normally necessary to remove the nuts that attach the RS...

Page 237: ...connects the MAIN31 board to the floppy disk drive is removed note for reassembly that the silver side of the connectors are oriented in their sockets as shown in this illustration Silver side of conn...

Page 238: ...grommet attaches to top edge of holder MAIN31 Board Top of holder is indicated by the inverted pyramid Snap these circuit board holders apart to remove optical module assemblies and MAIN31 board If th...

Page 239: ...circuit board package Repeat this procedure to remove the Multimode Optical Module Laser Output port from its bulkhead NOTE If a connector adapter is installed on the Optical Output port remove the c...

Page 240: ...mounting tab on the new assembly must be removed to allow mounting room If the bulkhead mounting tab is a part of the optical module assembly casting use pliers or your fingers to bend the bulkhead m...

Page 241: ...ocated in the upper port position the DC DC converter is mounted on the front of the board facing downward This applies to all dual port singlemode assemblies Use soldering desoldering equipment to re...

Page 242: ...10 To remove the DC AC Converter board from the bottom case half remove two screws that hold the insulator to its mounting plate on the bottom case half Then remove two screws that attach the DC AC C...

Page 243: ...ve 6 nuts that hold the Display module mounting plate Then lift the Display module off its mounting posts Remove these nuts Then lift the Display module off its mounting posts Display module mounting...

Page 244: ...nt Panel assembly from the top case half use the nut driver to remove 10 nuts that hold them together Remove these nuts Then separate the Front Panel assembly from top case half Front Panel assembly D...

Page 245: ...be extremely careful not to touch the fiber or clear plastic sheeting that covers the fiber Severe damage can result which will void the warranty b Remove 3 screws that hold the disk drive to the fib...

Page 246: ...disk drive connector The TEAC disk drives do not require this jumper If you are installing a Panasonic disk drive locate the disk drive connector on the MAIN31 board Make there is a solder jumper bet...

Page 247: ...ely cause is a discharged battery faulty battery or faulty Power Supply or DC AC Converter board Typical indications of a power problem are H Low battery warning message on screen H Random horizontal...

Page 248: ...unication link with power supply processor Unable to guarantee keyboard operation Replace the Power Supply board If the failure repeats replace the MAIN31 board Upper Lower Optics Module Communication...

Page 249: ...oard If the failure repeats disconnect battery for one minute then reconnect If the failure repeats replace the Power Supply board If failure repeats replace the Front Panel assembly TFS3031 will not...

Page 250: ...f the failure repeats replace the optical module assembly If the failure repeats again replace the Power Supply board If the failure repeats again replace the MAIN31 board TFS3031 reports a low measur...

Page 251: ...removal instructions 4 Attach the current probe to battery wire 2 5 Set the current probe to measure 1 amp current 200 mA range full bandwidth and DC coupled 6 Set the oscilloscope for 10 mv div 50 o...

Page 252: ...umber H Instrument modification number if applicable If you order a part that has been replaced with a different or improved part your local Tektronix field office or representative will contact you c...

Page 253: ...er at which the part was first effective Column four indicates the serial number at which the part was discontinued No entries indicates the part is good for all serial numbers 5 Qty This indicates th...

Page 254: ...B01 STAUFFER SUPPLY 810 SE SHERMAN PORTLAND OR 97214 0KB05 NORTH STAR NAMEPLATE 5750 NE MOORE COURT HILLSBORO OR 97124 6474 0KBZ5 MORELLIS Q D PLASTICS 1812 16TH AVE FOREST GROVE OR 97116 00779 AMP IN...

Page 255: ...OPTICAL MODULE W CIRCUIT BOARD OPTION 09 80009 119 4945 04 A3 OPTICAL MODULE ASSYS SINGLEMODE 119 4949 00 B010100 B020570 OPTICAL MODULE W CIRCUIT BOARD OPTION 04 80009 119 4949 00 119 4949 01 B020571...

Page 256: ...02 671 3293 03 B021252 B029999 CIRCUIT BOARD ASSEMBLY MAIN31 80009 671 3293 03 671 3886 00 B030000 B042017 CIRCUIT BOARD ASSEMBLY MAIN31 80009 671 3886 00 671 3886 01 B042018 B052579 CIRCUIT BOARD ASS...

Page 257: ...01 B030000 6 SPACER SLEEVE 0 190 0 005 AL ALLOY TK2174 361 1699 01 9 386 6833 00 B010100 B029999 1 PANEL W DISK DRIVE OPTION 0J9P4 386 6833 00 650 3716 00 B030000 1 SIDE PANEL ASSY W DISK DRIVE OPTIO...

Page 258: ...BLY BATTERY DOOR INCLUDES THE ATTACHING HARDWARE 7X318 650 3675 01 28 211 0889 00 6 THUMBSCREW 6 32 X 0 656 MACH OXIDESLOTTED HD 0KB01 211 0889 00 29 354 0759 00 6 O RING RETAINING 004 7X318 354 0759...

Page 259: ...ble Parts 6 8 TFS3031 TekRanger TekRanger 2 Service Manual 1 2 3 9 4 7 6 5 8 12 14 13 10 35 34 36 A6 11 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 Figure 6 1 Case and Connector Panel Ass...

Page 260: ...PT 01 0KB05 334 8881 00 334 8878 00 1 850 1300 MULTIMODE OPT 03 0KB05 334 8878 00 334 8884 00 1 1310 SINGLEMODE OPT 04 0KB05 334 8884 00 334 8879 00 1 1310 1550 SINGLEMODE OPT 06 0KB05 334 8879 00 334...

Page 261: ...on t 17 1 A2 OPTICAL MODULE ASSY MULTIMODE SEE ELECTRICAL ASSEMBLIES 18 650 3659 00 2 CARD GUIDE ASSY CKT BD HOLDER CHANNEL GROMMET 7X318 650 3659 00 19 361 1688 00 4 SPACER POST SNAP IN SPACE 1 5 NYL...

Page 262: ...Replaceable Parts TFS3031 TekRanger TekRanger 2 Service Manual 6 11 A2 A3 A4 A1 A5 A6 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1 21 20 19 18 2 3 22 Figure 6 2 Opto Electrical Assemblies Dual Port...

Page 263: ...A4 MAIN BOARD 174 3426 01 B030000 174 3426 00 B010100 TO B029999 A1 LCD DISPLAY TO A4 MAIN BOARD 174 3427 00 SERIAL CABLE FROM SIDE PANEL ASSY TO A4 MAIN BOARD 174 3457 00 A6 DC AC CONVERTER TO A5 POW...

Page 264: ...Manual 6 13 Illustration Location Part Number 174 3635 00 B030000 AND BEYOND KEYBOARD OPTION 19 TO A4 MAIN BOARD 174 3639 01 B030000 AND BEYOND A5 POWER SUPPLY TO A4 MAIN BOARD 650 3660 00 A5 POWER S...

Page 265: ...Replaceable Parts 6 14 TFS3031 TekRanger TekRanger 2 Service Manual...

Page 266: ...on See help information arrow keys 1 9 attenuation dead zone 3 4 4 5 B battery cautionary information 1 11 charge current check 5 31 charger indicator 1 11 low battery warning 1 11 new battery indicat...

Page 267: ...amic range fixture description singlemode TekRanger 3 9 E environmental specifications TekRanger 1 58 environmental specifications TekRanger 2 1 99 event dead zone 3 4 4 3 event detection 3 3 4 3 even...

Page 268: ...mode dynamic range fixture description 3 14 power charger adapter 3 19 power on 3 18 setup 3 17 singlemode attenuation dead zone 3 24 singlemode dynamic range 3 22 singlemode dynamic range fixture des...

Page 269: ...range 1550 singlemode 1 44 1 50 keyboard port 1 57 parallel port 1 57 power 1 56 serial port 1 57 size and weight 1 56 standard 1300 multimode 1 21 standard 1310 singlemode 1 26 standard 1550 singlemo...

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Page 272: ...uipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentat...

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