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Fluke DTX-GFM2, User Manual

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DTX-MFM2/GFM2/SFM2 Fiber Modules 

Users Manual 

26 

Autotest in Loopback Mode 

Use Loopback mode to test spools of cable, segments of 
uninstalled cable, and reference test cords.  

In this mode, the tester measures loss, length, and 
propagation delay at two wavelengths in one or both 
directions. 

Figure 10 shows the equipment required for testing fiber 
in Loopback mode. 

Summary of Contents for DTX-GFM2

Page 1: ...s Manual PN 2142235 April 2004 Rev 2 3 06 2004 2006 Fluke Corporation All rights reserved Printed in USA All product names are trademarks of their respective companies Fluke Networks DTX 1800 DTX GFM2...

Page 2: ...or replace ment of a defective product which is returned to a Fluke Networks authorized service center within the warranty period To obtain warranty service contact your nearest Fluke Networks author...

Page 3: ...onal 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 Acquai...

Page 4: ...ctions 20 Certifying Fiber Cabling 21 Autotest in Smart Remote Mode 21 Autotest in Loopback Mode 26 Autotest in Far End Source Mode 32 Using the Visual Fault Locator 37 Monitoring Optical Power 40 Opt...

Page 5: ...emote Mode Method B 21 8 Smart Remote Mode Reference Connections Method B 23 9 Smart Remote Mode Test Connections Method B 25 10 Equipment for Testing in Loopback Mode Method B 27 11 Loopback Mode Ref...

Page 6: ...sers Manual iv 18 Equipment for Monitoring Optical Power 40 19 Connections for Monitoring Optical Power 42 B 1 Modified Method B Smart Remote Mode Reference Connections B 2 B 2 Modified Method B Smart...

Page 7: ...Each module transmits both wavelengths 850 nm and 1300 nm 850 nm and 1310 nm or 1310 nm and 1550 nm Interchangeable connector adapters allow reference and test connections that meet ISO standards for...

Page 8: ...283 5853 Visit our website for a complete list of phone numbers Accessing the Technical Reference Handbook The DTX Series CableAnalyzer Technical Reference Handbook provides additional information on...

Page 9: ...sting at 850 nm and 1310 nm for Gigabit Ethernet applications Two 50 125 m multimode reference test cords 2 m SC SC DTX MFM2 GFM2 SFM2 Fiber Modules Users Manual DTX CableAnalyzer Product CD LinkWare...

Page 10: ...ith a dust cap or keep a reference test cord attached The OUTPUT port may be active even when a test is not in progress Covering the port reduces the risk of accidental exposure to hazardous radiation...

Page 11: ...iber connectors before every use Neglecting this step or using improper procedures can cause unreliable test results and may permanently damage the connectors See page 10 Cover all connectors with dus...

Page 12: ...tions introduce the fiber modules features Installing and Removing Fiber Modules Figure 1 shows how to install and remove the fiber modules WCaution Leave the module bay covers in place when the fiber...

Page 13: ...ives optical signals for loss length and power measurements You can change the connector adapter to match the connectors on the fiber under test See Figure 3 D SC output connector with dust cap Transm...

Page 14: ...ith dust caps when not in use Store the connector adapters for the fiber module in the canisters provided Do not touch the photodiode lens see Figure 4 Do not overtighten the adapter or use tools to t...

Page 15: ...Installing the Connector Adapter 9 amd99f eps Figure 4 Installing the Connector Adapter...

Page 16: ...en touch the swab to a dry wipe 2 Touch a new dry swab to the alcohol spot on the wipe Push the swab into the connector twist it around 3 to 5 times against the endface then remove and dispose of the...

Page 17: ...est cords and adapters used during referencing are excluded from test results Note Turn on the tester and smart remote and let them sit for 5 minutes before setting the reference Allow additional time...

Page 18: ...test cords provided by Fluke Networks or cords of the same quality See Replacing Fiber Reference Test Cords on page 47 Testing Your Reference Test Cords You should test your reference test cords befor...

Page 19: ...around a mandrel Place mandrels on the tester s output fibers as shown in Figures 8 through 15 In the reference and test connection diagrams shown on the tester mandrels are indicated by a loop in the...

Page 20: ...M2 Fiber Modules Users Manual 14 Wrap 5 times in grooves Place top wrap in groove under retainer Right no bends at retainer Wrong bends at retainer amd67f eps Figure 5 Wrapping a Reference Test Cord A...

Page 21: ...s you create a fiber type See the Technical Reference Handbook for details SETUP Fiber Test Limit Select the appropriate test limit for the job The tester compares the fiber test results to the select...

Page 22: ...s If the selected limit uses a calculated loss limit enter the number of adapters and splices that will be added to the fiber path after the reference is set Figure 6 shows an example of how to determ...

Page 23: ...Fiber Test Settings 17 amd65f eps Figure 6 Example of How to Determine the Number of Adapters Setting singlemode example mandrels not used...

Page 24: ...oth ends of the link Select this method for connections shown in this manual See About Method B Connections on page 20 Method C Loss results exclude connections at the ends of the link Only the fiber...

Page 25: ...fraction until the measured length matches the known length of a fiber Increasing the index of refraction decreases the reported length SPECIAL FUNCTIONS Set Reference Patch Lengths softkey on the Vie...

Page 26: ...fiber under test lets you connect to the fiber without disturbing the output port connection WCaution If you disconnect the reference test cords from the tester s or smart remote s output port after...

Page 27: ...delay on two fibers at two wavelengths in one or both directions Figure 7 shows the equipment required for testing fiber in Smart Remote mode amd46f eps A Tester and smart remote with fiber modules an...

Page 28: ...he number of adapters and splices that will be added to each direction of the fiber path after the reference is set Connector Type Select the connector type used in the cabling to be tested Select Gen...

Page 29: ...Certifying Fiber Cabling 23 amd145f eps Figure 8 Smart Remote Mode Reference Connections Method B...

Page 30: ...her end is on The tester cannot activate a sleeping or powered down tester at the far end through the fiber modules Try different connections at the patch panel Try changing the polarity of the connec...

Page 31: ...Certifying Fiber Cabling 25 amd146f eps Figure 9 Smart Remote Mode Test Connections Method B...

Page 32: ...Loopback mode to test spools of cable segments of uninstalled cable and reference test cords In this mode the tester measures loss length and propagation delay at two wavelengths in one or both direct...

Page 33: ...dapter with line cord optional D Reference test cord Match the fiber to be tested Long end must have SC connector For the other connectors match the connectors in the link E Two adapters of the approp...

Page 34: ...number of adapters and splices that will be added to each direction of the fiber path after the reference is set Connector Type Select the connector type used in the cabling to be tested Select Genera...

Page 35: ...Certifying Fiber Cabling 29 amd147f eps Figure 11 Loopback Mode Reference Connections Method B...

Page 36: ...e cabling The tester shows connections for the test method you selected Figure 12 shows connections for Method B 6 Turn the rotary switch to AUTOTEST Verify that the media type is set to Fiber Press J...

Page 37: ...Certifying Fiber Cabling 31 amd148f eps Figure 12 Loopback Mode Test Connections Method B...

Page 38: ...e with fiber modules and connector adapters installed match connector adapters to the connectors in the link B Memory card optional C Two AC adapters with line cords optional D Reference test cord Mat...

Page 39: ...fiber type to be tested Test Limit Select the test limit required for the job Press J More to see other lists of limits Remote End Setup Set to Far End Source Bi directional Does not apply to Far End...

Page 40: ...coaxial adapter are attached select Fiber Module next 5 The Set Reference screen shows connections for the test method you selected Figure 14 shows connections for Method B Clean the connectors on th...

Page 41: ...Certifying Fiber Cabling 35 amd149f eps Figure 14 Far End Source Mode Reference Connections Method B...

Page 42: ...DTX MFM2 GFM2 SFM2 Fiber Modules Users Manual 36 amd150f eps Figure 15 Far End Source Mode Test Connections Method B...

Page 43: ...T or FC To connect to other ferrule sizes use a patch cord with the appropriate connector at one end and a SC ST or FC connector at the tester end Figure 16 shows the equipment needed for using the vi...

Page 44: ...17 Press again to switch to flashing mode Press again to turn off the locator 4 Look for the red light to locate fibers or faults Figure 17 To check continuity or trace fiber connections look for the...

Page 45: ...Using the Visual Fault Locator 39 amd23f eps Figure 17 Using the Visual Fault Locator...

Page 46: ...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 this mode MONITOR mode Monitors power continuously at the input port at 850 nm...

Page 47: ...ct the source to the tester s input port as shown in Figure 19 Turn on the source 3 Turn the rotary switch to MONITOR If the media type is not set to Fiber press J Change Media to change it 4 Select P...

Page 48: ...DTX MFM2 GFM2 SFM2 Fiber Modules Users Manual 42 amd58f eps Figure 19 Connections for Monitoring Optical Power...

Page 49: ...rks as described on page 2 Table 3 Options and Accessories Option or Accessory Fluke Networks Model Number DTX MFM2 Multimode Fiber Module 850 nm 1300 nm DTX MFM2 DTX GFM2 Gigabit Fiber Module 850 nm...

Page 50: ...rd 2 m 2 NFK1 DPLX FC SC SC to SC SC duplex 50 m 125 m reference test cord 2 m 2 NFK2 DPLX SC SC LC to LC LC duplex 50 m 125 m reference test cord 2 m 2 NFK2 DPLX LC SC ST to ST ST duplex 50 m 125 m r...

Page 51: ...source DTX FTK DTX FOM Fiber Optic Meter Module Measures power and loss at 850 nm 1300 nm and 1310 nm 1550 nm DTX FOM Fiber Jack Accessory Kit 62 5 m multimode NFK1 FJ LC Accessory Kit 62 5 m multimod...

Page 52: ...rd FOC ST SC ST SMA simplex 62 5 m 1m patch cord FOC ST SMA ST FC simplex singlemode 1m patch cord NF120SM ST ST simplex singlemode 1m patch cord NF100SM ST SC simplex singlemode 1m patch cord NF110SM...

Page 53: ...ength maximum 5 m To ensure optimum performance from your tester get replacement reference test cords from Fluke Networks Using the Smart Remote with an OptiFiber Certifying OTDR You can use a DTX Ser...

Page 54: ...e and Regulatory Information N10140 Conforms to relevant Australian standards P Conforms to relevant European Union directives Listed by the Canadian Standards Association Laser safety OUTPUT port Cla...

Page 55: ...for the three fiber test methods Table A 1 Test Method Names Link End Connections Included in Loss Results This Manual TIA EIA 526 14A multimode TIA EIA 526 7 singlemode IEC 61280 4 1 multimode IEC 61...

Page 56: ...by Standards Standard or Application Test Method TIA 568 B B ISO 11801 B EN50173 B 10BASE FB A 10BASE FP A 10BASE FL A 10 100BASE SX B 100BASE FX B 1000BASE LX B 1000BASE SX B Standard or Application...

Page 57: ...nder test This method lets you connect to the fiber without disturbing the fiber modules output connections after setting the reference Figures B 1 and B 2 show reference and test connections for a fi...

Page 58: ...Caution 3 Reference test cord SC to MT RJ pinned Reference test cord SC to MT RJ no pins Mandrels used only for multimode fiber tested with the DTX MFM2 modules MT RJ to MT RJ adapter Mandrel Mandrel...

Page 59: ...Reference test cord SC to MT RJ pinned Reference test cord SC to MT RJ no pins Mandrels used only for multimode fiber tested with the DTX MFM2 modules MT RJ to MT RJ adapter Mandrel Mandrel Tester Sm...

Page 60: ...DTX MFM2 GFM2 SFM2 Fiber Modules Users Manual B 4...

Page 61: ...e 18 connector adapter cleaning 11 illustration of SC ST LC and FC 8 installation 8 Connector Type 16 Custom Fiber Type and Test Limit 15 customer support 2 F Far End Source mode Autotest 33 equipment...

Page 62: ...ce test cord Patch Lengths 19 power meter 40 R reference alternate connections 18 Far End Source mode 34 Loopback mode 28 Smart Remote mode 22 when to set 11 reference test cord replacement 47 testing...

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