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Fluke DTX-MFM2 User Manual

Fiber modules
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DTX-MFM2/GFM2/SFM2
Fiber Modules
Users Manual
PN 2142235
April 2004, Rev. 4 4/10
©2004-2010 Fluke Corporation. All rights reserved. Printed in USA.
All product names are trademarks of their respective companies.
Downloaded from
Elcodis.com
electronic components distributor

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  • Page 1 DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual PN 2142235 April 2004, Rev. 4 4/10 ©2004-2010 Fluke Corporation. All rights reserved. Printed in USA. All product names are trademarks of their respective companies. Downloaded from Elcodis.com electronic components distributor...
  • Page 2 90 days, unless otherwise stated. Ni-Cad, Ni-MH and Li-Ion batteries, cables or other peripherals are all considered parts or accessories. The warranty extends only to the original buyer or end user customer of a Fluke Networks authorized reseller, and does not apply to any product which, in Fluke Networks’...

  • Page 3: Table Of Contents

    Accessing the Technical Reference Handbook ............2 Additional Resources for Cable Testing Information ..........2 Unpacking ........................3 DTX-MFM2 Multimode Fiber Modules ..............3 DTX-GFM2 Multimode Fiber Modules ..............3 DTX-SFM2 Singlemode Fiber Modules ..............3 Safety Information ....................... 4 Getting Acquainted .....................
  • Page 4 DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual Selecting Test Reference Cords ................12 Testing Your Test Reference Cords ................ 12 Using Mandrels for Testing Multimode Fiber ............12 Fiber Test Settings ......................15 About 1 Jumper Connections ..................20 Certifying Fiber Cabling ....................20 Autotest in Smart Remote Mode ................
  • Page 5 List of Figures Figure Title Page Installing and Removing Fiber Modules ................6 Fiber Module Features ......................7 SC, ST, LC, and FC Connector Adapters ................8 Installing the Connector Adapter..................9 Wrapping a Test Reference Cord Around a Mandrel ............14 Example of How to Determine the Number of Adapters Setting........
  • Page 6 DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual Testing a Fiber Link in Far End Source Mode (1 Jumper Method) ........43 Equipment for Using the Visual Fault Locator..............44 Using the Visual Fault Locator ..................... 46 Equipment for Monitoring Optical Power................47 Connections for Monitoring Optical Power................

  • Page 7: Overview Of Features

    To Each module transmits both wavelengths (850 nm and register, fill out the online registration form on the Fluke 1300 nm, 850 nm and 1310 nm, or 1310 nm and Networks website at www.flukenetworks.com/registration.

  • Page 8: Contacting Fluke Networks

    Contacting Fluke Networks Accessing the Technical Reference Handbook Note If you contact Fluke Networks about your tester, The DTX Series CableAnalyzer Technical Reference have the tester's software and hardware version Handbook provides additional information on the tester numbers available if possible.

  • Page 9: Unpacking

    SC/SC DTX-MFM2 Multimode Fiber Modules • DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual • Two DTX-MFM2 Fiber Modules for testing at 850 nm and 1300 nm Note • Two 62.5/125 µm multimode test reference cords, The test reference cords and connector adapter...

  • Page 10: Safety Information

    DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual • Safety Information Never look directly into the visual fault locator output. Momentary exposure to the locator’s output will not damage your eyes; however, Warning direct, long-term exposure is potentially hazardous. To avoid possible fire, electric shock, or personal injury read the safety information given in the •...
  • Page 11 • Use only high-quality test reference cords that • Use a Fluke Networks FiberInspector Video comply with ISO/IEC 14763-3. Test the cords at Microscope to periodically inspect the fiber regular intervals. See Appendix A. module’s OUTPUT connector for scratches and •...

  • Page 12: Getting Acquainted

    DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual Getting Acquainted The following sections introduce the fiber modules’ features. Installing and Removing Fiber Modules Figure 1 shows how to install and remove the fiber modules. Caution Leave the module bay covers in place when the fiber modules are not installed.

  • Page 13: Physical Features

    Getting Acquainted Physical Features Button for activating the visual fault locator (B) and output port (D). See “Using the Visual Fault Locator” on page 44 and “Autotest in Far End Source Mode” on page 36. Universal fiber connector (with dust cap) for the visual fault locator output. The connector accepts 2.5 mm ferrules.

  • Page 14: Installing The Connector Adapter

    Holding the adapter so it does not turn in the nut, Additional adapter styles may be available. Check the align the adapter's key with the module connector's Fluke Networks web site for updates. slot and slide the adapter onto the connector. Screw the nut onto the module connector.

  • Page 15: Installing The Connector Adapter

    Installing the Connector Adapter amd99f.eps Figure 4. Installing the Connector Adapter Downloaded from Elcodis.com electronic components distributor...

  • Page 16: Essentials For Reliable Fiber Test Results

    3 to 5 times. use mandrels during testing. Inspect connectors with a fiber microscope, such as the Fluke Networks FiberInspector Video Microscope Cleaning Connectors and Adapters before making connections. Always clean and inspect fiber connectors before making connections.

  • Page 17: About Setting The Reference

    • Anytime the tester warns you that the reference is out Inspect connectors with a fiber microscope, such as the of date. Fluke Networks FiberInspector Video Microscope • before making connections. Anytime you see a negative loss measurement. (See the Technical Reference Handbook for more Always cover unused connectors with protective caps.

  • Page 18: Dtx-Mfm2/Gfm2/Sfm2 Fiber Modules Users Manual

    Larger changes may You should use mandrels when testing multimode fiber indicate a problem with the test reference cords or with the DTX-MFM2 fiber modules. Mandrels can improve connections. measurement repeatability and consistency. They also See the sections on Smart Remote, Loopback, and Far End allow the use of LED light sources to certify 50 µm and...
  • Page 19 Essentials for Reliable Fiber Test Results The gray mandrels included with the DTX-MFM2 are Figure 5 shows how to wrap the fiber around a mandrel. compliant with ANSI/TIA-568-C for 62.5 µm fiber with a Place mandrels on the tester’s output fibers, as shown in 3 mm jacket.

  • Page 20: Wrapping A Test Reference Cord Around A Mandrel

    DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual Place top wrap in groove under retainer Wrap 5 times in grooves Right: no bends at retainer Wrong: bends at retainer amd67f.eps Figure 5. Wrapping a Test Reference Cord Around a Mandrel Downloaded from Elcodis.com...

  • Page 21: Fiber Test Settings

    Fiber Test Settings Fiber Test Settings To access the fiber test settings turn the rotary switch to SETUP; then select Fiber Loss. Use to see different tabs. Table 2 describes the test settings that apply to fiber cabling. Table 2. Fiber Test Settings Setting Description SETUP >...
  • Page 22 DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual Table 2. Fiber Test Settings (cont.) Setting Description SETUP > Fiber Loss > When enabled in Smart Remote or Loopback mode, the tester prompts you to swap the test Bi-Directional connections halfway through the test. The tester can then make bi-directional measurements for each fiber at each wavelength (850 nm/1300 nm, 850 nm/1310 nm, or 1310 nm/1550 nm).

  • Page 23: Example Of How To Determine The Number Of Adapters Setting

    Fiber Test Settings amd65f.eps Figure 6. Example of How to Determine the Number of Adapters Setting (singlemode example; mandrels not used) Downloaded from Elcodis.com electronic components distributor...
  • Page 24 DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual Table 2. Fiber Test Settings (cont.) Setting Description SETUP > Fiber Loss results include connections added after referencing. The reference and test connections Loss > determine which connections are included in results. The Test Method refers to the number of end...
  • Page 25 Fiber Test Settings Table 2. Fiber Test Settings (cont.) Setting Description SETUP > Fiber Loss > The tester uses the index of refraction (n) defined in the currently selected fiber type (Default) Index of Ref. Source or a value you define (User Defined). The default value defined by the selected fiber type (n) >...

  • Page 26: About 1 Jumper Connections

    To test links with different connectors at each end, see the alternate method described in the Appendix of the DTX Series CableAnalyzer Technical Reference Handbook or visit the Fluke Networks Knowledge Base for suggestions. Downloaded from Elcodis.com electronic components distributor...

  • Page 27: Equipment For Testing In Smart Remote Mode (1 Jumper Method)

    Two singlemode adapters of the appropriate type connector adapters installed. Match connector adapters Two mandrels. Recommended when testing multimode to the connectors in the link. fiber with DTX-MFM2 modules. See page 12. Memory card (optional) Fiber cleaning supplies Two ac adapters with line cords (optional) A microscope for inspecting fiber connectors (the FT500 Test reference cords.
  • Page 28 DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual Autotest in Smart Remote Mode: Set the Reference • Connector Type: Select the connector type used in the Turn on the tester and smart remote and let them sit for 5 minutes. Allow additional time if the modules cabling to be tested.

  • Page 29: Setting The Reference In Smart Remote Mode (1 Jumper Method)

    Certifying Fiber Cabling amd145f.eps Figure 8. Setting the Reference in Smart Remote Mode (1 Jumper Method) Downloaded from Elcodis.com electronic components distributor...
  • Page 30 You must compare Note the loss to the limits given here to make sure the Fluke Networks recommends that you use this cords are good. procedure to make sure your test reference cords are good before you test each fiber link.

  • Page 31: Testing The Test Reference Cords In Smart Remote Mode

    Certifying Fiber Cabling amd175.eps Figure 9. Testing the Test Reference Cords in Smart Remote Mode Downloaded from Elcodis.com electronic components distributor...
  • Page 32 DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual Autotest in Smart Remote Mode: Test the Fiber Link • Verify that the tester at the other end is on. (The Caution tester cannot activate a sleeping or powered-down If you disconnected the test reference cords from tester at the far end through the fiber modules.)

  • Page 33: Testing A Fiber Link In Smart Remote Mode (1 Jumper Method)

    Certifying Fiber Cabling amd146f.eps Figure 10. Testing a Fiber Link in Smart Remote Mode (1 Jumper Method) Downloaded from Elcodis.com electronic components distributor...

  • Page 34: Autotest In Loopback Mode

    DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual Autotest in Loopback Mode In this mode, the tester measures loss, length, and propagation delay at two wavelengths in one or both Use Loopback mode to test spools of cable and segments directions. of uninstalled cable.

  • Page 35: Equipment For Testing In Loopback Mode (1 Jumper Method)

    (match connector adapter to the connectors in the link) Mandrel. Recommended when testing multimode Memory card (optional) fiber with a DTX-MFM2 module. See page 12. AC adapter with line cord (optional) Fiber cleaning supplies Test reference cord. Match the fiber to be tested. Long A microscope for inspecting fiber connectors (the end must have SC connector.
  • Page 36 DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual Autotest in Loopback Mode: Set the Reference • Connector Type: Select the connector type used in Turn on the tester and smart remote and let them sit for 5 minutes. Allow additional time if the modules have the cabling to be tested.

  • Page 37: Setting The Reference In Loopback Mode (1 Jumper Method)

    Certifying Fiber Cabling amd147f.eps Figure 12. Setting the Reference in Loopback Mode (1 Jumper Method) Downloaded from Elcodis.com electronic components distributor...
  • Page 38 Note cords are good. Fluke Networks recommends that you use this procedure to make sure your test reference cords are good before you test each fiber link. Downloaded from Elcodis.com...

  • Page 39: Testing The Test Reference Cords In Loopback Mode

    Certifying Fiber Cabling amd176.eps Figure 13. Testing the Test Reference Cords in Loopback Mode Downloaded from Elcodis.com electronic components distributor...
  • Page 40 DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual Autotest in Loopback Mode: Test the Fiber Caution 13 Press If you disconnected the test reference cord from 14 If bi-directional testing is enabled, the tester prompts the tester’s output port, you must set the you to switch the fibers halfway through the test.

  • Page 41: Testing A Fiber In Loopback Mode (1 Jumper Method)

    Certifying Fiber Cabling amd148f.eps Figure 14. Testing a Fiber in Loopback Mode (1 Jumper Method) Downloaded from Elcodis.com electronic components distributor...

  • Page 42: Autotest In Far End Source Mode

    Memory card (optional) Mandrel. Recommended when testing multimode Two AC adapters with line cords (optional) fiber with a DTX-MFM2 module. See page 12. Test reference cord. Match the fiber to be tested. SC Fiber cleaning supplies connector at one end. Match the link connectors at the A microscope for inspecting fiber connectors (the other end.
  • Page 43 Certifying Fiber Cabling Autotest in Far End Source Mode: Set the Reference • Bi-directional: Does not apply to Far End Source Turn on the tester and smart remote and let them sit for 5 minutes. Allow additional time if the modules have mode.
  • Page 44 Set Reference. If both a fiber module and a 850 nm (DTX-MFM2/GFM2) or 1310 nm (DTX-SFM2). twisted pair or coaxial adapter are attached, select Press again to switch to 1300 nm (DTX-MFM2), 1310 nm Fiber Module next. (DTX-GFM2), or 1550 nm (DTX-SFM2).

  • Page 45: Setting The Reference In Far End Source Mode (1 Jumper Method)

    Certifying Fiber Cabling amd149f.eps Figure 16. Setting the Reference in Far End Source Mode (1 Jumper Method) Downloaded from Elcodis.com electronic components distributor...
  • Page 46 Note cords are good. Fluke Networks recommends that you use this procedure to make sure your test reference cords are good before you test each fiber link. Downloaded from Elcodis.com...

  • Page 47: Testing The Test Reference Cords In Far End Source Mode

    Certifying Fiber Cabling amd177.eps Figure 17. Testing the Test Reference Cords in Far End Source Mode Downloaded from Elcodis.com electronic components distributor...
  • Page 48 DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual Autotest in Far End Source Mode: Test the Fiber Caution 13 Turn the rotary switch to AUTOTEST, press ; then select the wavelength set on the smart remote. If you disconnected the test reference cord from the source’s output port, you must set the...

  • Page 49: Testing A Fiber Link In Far End Source Mode (1 Jumper Method)

    Certifying Fiber Cabling amd150f.eps Figure 18. Testing a Fiber Link in Far End Source Mode (1 Jumper Method) Downloaded from Elcodis.com electronic components distributor...

  • Page 50: Using The Visual Fault Locator

    DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual Using the Visual Fault Locator The fiber module includes a visual fault locator that helps you quickly check fiber continuity, trace fibers, and locate faults along fibers and in connectors. The visual fault locator port accepts connectors with 2.5 mm ferrules (SC, ST, or FC).
  • Page 51 Using the Visual Fault Locator Using the Visual Fault Locator Clean the connectors on the test reference cord, if used, Look for the red light to locate fibers or faults (Figure and the fiber to be tested. 20): • To check continuity or trace fiber connections, look Connect the fiber directly to the tester’s VFL port or connect using the test reference cord.

  • Page 52: Using The Visual Fault Locator

    DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual amd23f.eps Figure 20. Using the Visual Fault Locator Downloaded from Elcodis.com electronic components distributor...

  • Page 53: Monitoring Optical Power

    The tester offers two versions of the power meter function: • SINGLE TEST mode: Takes one power measurement at 850 nm and 1300 nm (DTX-MFM2), 850 nm and 1310 nm (DTX-GFM2), or 1310 nm and 1550 nm (DTX-SFM2). You can save the power measurement in amd57f.eps this mode.
  • Page 54 DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual Monitoring Optical Power Clean the tester’s input port and the test reference cord Select Power Meter. You do not need to select a fiber and source connectors. type or test limit. Use the test reference cord to connect the source to the Select the correct wavelength;...

  • Page 55: Connections For Monitoring Optical Power

    Monitoring Optical Power amd58f.eps Figure 22. Connections for Monitoring Optical Power Downloaded from Elcodis.com electronic components distributor...

  • Page 56: Options And Accessories

    Using the Smart Remote with an OptiFiber Certifying OTDR ™ For a complete list of options and accessories visit the Fluke Networks website at www.flukenetworks.com. You can use a DTX Series smart remote with a To order options or accessories, contact Fluke Networks as DTX-MFM2 or DTX-SFM2 fiber module as the remote for a described on page 2.

  • Page 57: Certification, Compliance, And Regulatory Information

    Certification, Compliance, and Regulatory Information Certification, Compliance, and Regulatory Information Conforms to relevant Australian standards Conforms to relevant European Union directives. Listed by the Canadian Standards Association. Laser safety OUTPUT port: Class 1 VFL port: Class 2 Complies with EN60825-1 and EN61010-1 (CE) and CFR21 Downloaded from Elcodis.com...
  • Page 58 DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual Downloaded from Elcodis.com electronic components distributor...

  • Page 59: Appendix A: How To Test Your Test Reference Cords

    Appendix A: How to Test Your Test Reference Cords Why You Must Do this Test Equipment You Must Have To get accurate measurements of loss, you must use high- Figure A-1 shows the equipment you must have to test quality test reference cords that are in good condition and your test reference cords.

  • Page 60: A-1. Equipment For Testing The Test Reference Cords

    DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual amd173.eps Tester with a fiber module and a connector adapter A test reference cord that you are sure is good. One installed. Use the connector adapter that connects to connector is SC. The other connector is the same as on the cords you will test.
  • Page 61 Appendix A: How to Test Your Test Reference Cords • 1. Set Up the Tester Fiber Type: Select the type of cable you will test. This sets the index of refraction (n). The test limits shown 1-1 Turn on the tester. Wait for a minimum of 5 minutes above use n to calculate the length of the fiber, then for the tester to become stable.

  • Page 62: A-2. Examples Of Fiber Endfaces

    DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual 2. Clean and Inspect the Connectors 2-2 After you clean an endface, use a fiber microscope to examine the endface. Figure A-2 shows examples of 2-1 Test reference cords must have endfaces that are clean what you can see with a fiber microscope.

  • Page 63: A-3. Reference Connections

    -24.50 dBm (for example, -23.50 dBm is a Mandrel used only for better value) multimode fiber tested • with the DTX-MFM2 For 62.5/125 µm fiber, the reference value must be modules. better than -20.00 dBm (for example, -19.50 dBm is a better value) amd174.eps...
  • Page 64 DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual 4. Test the Cord in Both Directions 5. Read the Loss Measurements 4-1 Disconnect the test reference cord from the INPUT port Compare the loss measurement for each direction to these of the tester (Figure A-4, limits: •...

  • Page 65: A-4. Connections For Testing A Test Reference Cord

    Appendix A: How to Test Your Test Reference Cords amd171.eps Figure A-4. Connections for Testing a Test Reference Cord Downloaded from Elcodis.com electronic components distributor...
  • Page 66 DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual Downloaded from Elcodis.com electronic components distributor...

  • Page 67: Appendix B: Test Method Names

    Appendix B: Test Method Names Industry standards use different names for equivalent test methods. Table B-1 shows the names used in this manual and by four common industry standards for the three fiber test methods Table B-1. Test Method Names Link End Connections This TIA/EIA-526-14A...
  • Page 68 DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual Downloaded from Elcodis.com electronic components distributor...

  • Page 69: Appendix C: Modified 1 Jumper Method

    To test links with different connectors at each end visit the connector adapters that match the connectors in the fiber Fluke Networks Knowledge Base for suggestions. under test. This method lets you connect to the fiber without disturbing the fiber modules' output connections after setting the reference.

  • Page 70: C-1. Modified 1 Jumper Method: Smart Remote Mode Reference Connections

    DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual Reference test cord: MT-RJ to MT-RJ adapter Mandrel* SC to MT-RJ (pinned) Reference test cord: SC to MT-RJ (no pins) Mandrel* Tester Smart remote Caution Do not disconnect the outputs ( Mandrels used only for...

  • Page 71: C-2. Modified 1 Jumper Method: Smart Remote Mode Test Connections

    ( AUTO TEST SINGLE SETUP TEST SPECIAL MONITOR FUNCTIONS Mandrels used only for multimode fiber tested with TALK TALK the DTX-MFM2 modules amd48f.eps Figure C-2. Modified 1 Jumper Method: Smart Remote Mode Test Connections Downloaded from Elcodis.com electronic components distributor...
  • Page 72 DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual Downloaded from Elcodis.com electronic components distributor...

  • Page 73: Index

    Index Numerics —C— FC connector adapter Fiber Type 1 Jumper method cautions Fluke Networks modified cleaning contacting standard connectors and adapters Knowledge Base 1, 2, 3 Jumper connections alternate —I— —A— See also Smart Remote, Loopback, or Far End Source mode...
  • Page 74 DTX-MFM2/GFM2/SFM2 Fiber Modules Users Manual —M— Loopback mode —V— Smart Remote mode mandrels visual fault locator when to set Method 1 Jumper, 2 Jumper, 3 registration Jumper —W— Remote End Setup MT-RJ warnings —S— —N— safety SC connector adapter negative loss...

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