Appendix B: FIBERTEK & TRACETEK User's Manual Update
Contents
1. In its High Resolution mode with clean connectors TRACETEK will have a dead zone of 2 m while in the Medium and Low Resolution Modes the dead zones will be about 8 m When testing through patch panels or other cross connect devices best results will be achieved with the High Resolution mode Refer to Table 1 when deciding which of the three resolution modes 15 best for your application Appendix B TRACETEK Application Notes Troubleshooting with TRACETEK TRACETEK can be an invaluable tool for troubleshooting a variety of network problems One application is to locate a break in a cable In a new installation TRACETEK can be used with a power meter light source test kit such as FIBERTEK to characterize a link and map the distance to known events In this example we re testing a backbone link consisting of 44 m of cross connect cable to a 717 m backbone followed by another 40 m of cross connect Figure is the FIBERTEK power meter light source result from the link indicating a passing result In Figure 2 we see the connectors at 40 m and 760 m as well as the end of the fiber at 801m The connectors at 40 m and 760 m appear to be in good condition with a reflection that 15 just below half scale 14 44 82 14 65 18 41 82 14 83 inp HH 85H 13BHBHnn Fiber IDERL HH B85H 13HHnnm Fiber v4 IDERL lt B5Hnn 2 3 dB Budget 4 3 dB Hargin 13HHnn 1 8 dB Length Tr nm HH Core Diamete2. Appendix B FIBERTEK amp User s Manual Update In order to allow users of FIBERTEK and TRACETEK to test more extensive range of cabling systems the fiber optic launch cables and couplers that were included with FIBERTEK and TRACETEK have been changed Please use this inventory list to replace the inventory pack out description on pages 3 6 of the FIBERTEK TRACETEK Users Manual 6510 00 5010 Rev D Multimode FIBERTEK kits now include 50um Cable Kit o 1x1 meter 3 3ft ST ST duplex launch cable 2 2 6 6ft ST ST duplex launch cable e 62 5um Cable Kit o 1 1 meter 3 3ft ST ST duplex launch cable 2 2 meter 6 68 ST ST duplex launch cable e Fiber Couplers o 4 Single mode ST ST couplers single mode couplers used to increase repeatability and performance Single Mode FIBERTEK kits now include Cable Kit o 1 1 meter 3 3ft FC ST duplex launch cable o 2x 2 meter 6 6ft FC ST duplex launch cable e Fiber Couplers o 4x Single mode ST ST couplers Multimode TRACETEK kits now include 50um Cable Kit 1x 2 meter 3 3ft FC ST simplex launch cable 1x 2 meter 3 3ft FC SC simplex launch cable 62 5um Cable Kit 1 2 meter 3 3ft FC ST simplex launch cable 1 2 meter 3 3ft FC SC simplex launch cable Single Mode TRACETEK kits now include 9um Cable Kit 1 2 meter 3 3ft FC ST simplex launch cable 1x 2 meter 3 3ft FC SC simplex laun
3. Method A Calibration 1 Choose the FIBERTEK module that corresponds to the wavelength you want to test and attach it to the LANTEK Display Handset Connect one launch cable to the TX port Connect a second launch cable to the RX port Use a coupler to connect the two launch cables together From the Fiber menu of the LANTEK choose the Loop back option that matches the FIERTEK module connected to the Handset For example choose MM 850nm Loop back if the FIBERTEK 850nm module is in the handset and you want to test the fiber at 850nm Choose Field Calibration from the LANTEK main screen and follow the on screen instructions T After calibration disconnect the two launch cables from each other and connect to the fiber you wish to test a Optionally add 3 launch cable to the Display Handset to compensate for the connector loss that is calibrated out see Method A above Method B Calibration 1 Choose the FIBERTEK module that corresponds to the wavelength you want to test and attach it to the LANTEK Display Handset 2 Connect one launch cable between the TX and RX ports of the adapter 3 From the Fiber menu of the LANTEK choose the Loop back option that matches the FIERTEK module connected to the Handset For example choose MM 850nm Loop back if the FIBERTEK 850nm module is in the handset and you want to test the fiber at 850nm 4 Choose Field Calibration from the LANTEK main screen and follow the on s
4. o ISO 11801 Generic Cabling IEEE 802 3 Appendix A Fiber Optic Cabling Standards amp Application Requirements 0 75 ea 0 75 ea 0 5 ea ws sm o azs 0 5 ea vaso 151 ms s20 o as 1o 0 75 ea no stort ns am o 375 0 5 ea 0 5 ea 0 5 ea 0 5 ea 0 5 ea 0 5 ea 0 5 ea 0 5 ea 0 5 ea 0 5 ea am wsm ws ms as A 3 Fiber Optic Cabling Standards amp Application Requirements Standards Organization Lo T 0 5 ea ws ow ae ow os 0 5 ea _ ms gt nis tom os ma 0 5 ea ISO IEC 0 5 0 5 0 5 ea so 150 ns ms ns 0 5 ea 0 5 ea _ ms ns nis ws nla 0 5 ea 0 5 ea 0 75 ea 0 5 ea so ns ms ns 2000 os ma Definitions Link channel loss The maximum allowable loss measured with a power meter light source kit Minimum operating distance Most standards do not limit the length instead require operation to a minimum lentgh Max fiber attenuation Indicates max allowable loss per km Verify from mfg that your cable is less than spec d limit Connector return loss Indicate reflected power from connectors Failures indicate polishing or cleaning problems A 4 Appendix B TRACETEK Application Notes TRACETEK Fiber Optic Troubleshooting Module for IDEAL LANTEK 6
5. 7 Series Product Overview High bandwidth optical networks have become increasingly sensitive to signal transmission problems In many cases the channel insertion loss is the only parameter that is measured to make a determination that a link s performance is satisfactory Channel insertion loss only measures the weakening of the signal from one end of a fiber optic link to the other making sure that enough optical power is present at the receiver to ensure the optical transceivers can see each other FIBERTEK is an exceptional tool to certify proper link channel loss However in a situation when a certification test fails or there are unusual network performance problems another tool can help isolate cabling problems TRACETEK is a unique tool that provides many of the useful features of an OTDR without the high cost or complex parameters to set up An easy to use diagnostic tool TRACETEK allows the user to measure the total length of a link measure the distance to a reflective event such as a connector and most importantly identify faulty connections TRACETEK works by launching a high power laser pulse down the fiber and monitoring reflections returned by the end of the cable connectors mechanical splices and cable breaks This important functionality will help locate sources of excessive reflection in the cabling system Excessive reflection in an optical system leads to high bit error rates preventing the network from opera
6. displayed on screen left to right with the last event usually taking place at the end of the fiber Note Sometimes the end of the fiber EOF is not where it is expected due to poor splices or cuts EOF is the point where TRACETEK detects a large reflection about 14dB which be the actual EOF a bad connector or break in the fiber B5H L3HHnn Fiber IDERL The distance to the end of the fiber is displayed on the screen in the lower left hand corner of the display The vertical cursor can be used to find the distance to an event by moving it along the trace where the event is indicated The distance to this point appears on the screen 1 the upper right hand corner of the display Reference Guide Saving TRACETEK Results Like other tests the resultant plot from TRACETEK can be stored in the LANTEK handset and recalled or uploaded to a PC using the LANTEK Reporter software 1 Enter atest record name From the TRACETEK S BB 58 83 44 43 Co i 858 138Hnm Fiber Us display press the 1988 78 ft key and press save 1916 91 ft the record 45 Reference Guide 46 Appendix A Fiber Optic Cabling Standards amp Application Requirements Summary of Fiber Optic Cabling Standards amp Application Requirements Standards TIA 568
7. in the High Resolution mode low power The long laser pulse will cause the receiver to saturate if it is not used on a cable that is long enough to absorb some of the reflected energy It is recommended that Medium Resolution mode be used either on cables between 250 850 m in length or when trying to locate low reflection events such as mechanical splices or connectors where the polish is so good that they do not reflect enough light in the low power mode to be detected This setting 1s not necessary for troubleshooting Its primary function is to locate high quality connections for documentation purposes Low Resolution The Low Resolution mode combines the high power long pulse of the Medium Resolution mode with long distance scaling Use this mode only on cables that are over 500 m in length Use of this mode on short cables will saturate the display making event identification difficult This setting 1s best for testing cables between 500 and 4000 m Most connectors and mechanical splices will be visible in the Low Resolution mode 5 Appendix B TRACETEK Application Notes The TRACETEK Display After deciding which setting is best for your situation select the appropriate mode and press the a key TRACETEK will sample the fiber for about 30 seconds before displaying the acquired trace data 14 26 82 13 03 Key Elements of TRACETEK Display 1 Start pulse first connector 2 Reflective events 3 End of fi
8. is best used for long fiber links where the majority of the attenuation 15 caused by the cable itself not the connectors With this configuration the calibration reference plane 15 at the patch panel and work area outlet The measurement taken will include the loss of the fiber optic cable including inline splices and couplers and the individual connector at each end of the link one pair Since there is only one pair of connectors included in this measurement the overall loss values may be lower than one would expect particularly when this setup is used to test very short cables When used on long links of over 1km multimode or 4km single mode the loss of the connectors 15 small compared with the fiber making this an acceptable setup for longer links Use this configuration when knowing the loss of the optical fiber is more important than the total link loss Figure 7 Method A Test Setup 18 FIBERTEK Reference Guide Method B Calibration Setup The calibration setup for Method 15 usually used for single fiber test systems This method requires the user to disconnect the launch cable from the power meter after calibration and then add a second launch cable for testing This method cannot be used to calibrate FIBERTEK using the dual module setup but is acceptable when using the single module loop back configuration Helererice Cabe 1 Figure 8 Method B Calibration Setup 19 FIBERTEK Referen
9. meter 3 3ft FC SC simplex launch cable Single Mode TRACETEK kits now include 9um Cable Kit 1 2 meter 3 3ft FC ST simplex launch cable 1x 2 meter 3 3ft FC SC simplex launch cable Page 5 of 5 Customer
10. mode should help In the HIGH Resolution mode the z 15 44 82714703 power output is decreased and the fe echoes are eliminated Also that notice the dead zones of the first and last events are noticeably narrower Figure 8 Q3 Why is TRACETEK only available in 1300 nm modules A3 Since TRACETEK does not make attenuation measurements the reason for choosing a 1300 nm laser is based purely on performance Multimode fiber has less than half the attenuation at 1300nm than it does at 850 nm By using the 1300 nm laser TRACETEK can be used to test much longer cables than it could with an 850 nm laser whose power attenuates very rapidly Appendix B TRACETEK Application Notes Q4 Does TRACETEK support single mode testing A4 Yes TRACETEK is also available in a single mode kit with a 1310 nm laser For single mode fibers the attenuation difference between 1310 nm and 1550 nm 15 small enough that there 15 no major performance gain obtained by operating at 1550 nm In this case the 1310 nm laser helps make TRACETEK the most affordable solution for reflectance testing of single mode fiber If I lose my TRACETEK launch cable do I need to replace it with a special one A5 No the included launch cable with TRACETEK 15 an ordinary FC ST multimode or FC FC single mode jumper Any high quality replacement jumper will work and there is no calibration necessary The length of the launch cable is only important in that it
11. of individual connectors and splices The second feature of an OTDR is its ability to measure the tiny amounts of light that are reflected back by the fiber optic cable itself This phenomena is known as Rayleigh scattering End of OTDR Block Diagram and is caused by light reflecting off of molecules in the glass whose diameter 15 1 10 the wavelength of the light This is the same phenomenon that makes the sky appear blue When the OTDR is able to detect this these tiny reflections it can calculate the loss of the cable as well as the insertion loss of connectors and splices on the fiber cable This technology does not come cheap in fact the high sensitivity detector and the supporting electronics required to see these tiny reflections are responsible for most of the cost of the OTDR itself 37 Reference Guide OTDR History 38 OTDRs were first used in long distance outside plant fiber optic installations such as telecom or CATV to help document and troubleshoot fiber networks The first generations of OTDRs were massive complex and very expensive Most models required the use of a cart or dolly of some type to be moved as they were heavy and bulky These early machines did not offer any of the automatic setup features we are used to seeing today meaning that the operator had to have a very thorough understanding of the operation of the equipment to properly configure it Lastly many of the fir
12. pass or fail 15 displayed along with individual test results Fiber autotesting can be performed in either Multimode in accordance with the TIA EIA 526 14A Standards or Singlemode in accordance with the TIA EIA 526 7 Standards Fiber Testing Singlemode and Multimode There are four types of test that can be performed Duplex Length Loopback Length Loopback Attenuation and Dual Fiber Attenuation Field calibration must be completed prior to performing tests A field calibration 15 also required every time there 15 a change to the launch cables fiber cable type adapters or when the power 15 turned OFF or ON for either of the units The attached adapters of the handset units should be allowed to warm up for a minimum of 5 minutes to ensure accuracy The launch cables of the same fiber type should be the same as the fiber to be tested Position unattached launch cable leads on a flat surface Allow the fiber to relax but not dangle in the air Note During any calibration or testing procedure do not move the handsets fiber or leads Altering their position will affect the accuracy of the measurement Loopback attenuation supported in firmware version 2 000 and higher 23 FIBERTEK Reference Guide Loopback Testing Single Handset Loopback testing allows testing fiber links using only the display handset This type of test is convenient for testing short links or patch cords since the use of a single handset 15 l
13. B OT TE REN Generic ms 07 03 gt 20 90 ms 35 50 Cabling ms 075 O3 gt 20 90 15 50 ms 075 03 gt 20 90 ns 15 50 e ors es m m n or oa foo me oa efo fos foe anf os fao foe n s ISO 11801 Cabling Fiber Optic Cabling Standards amp Application Requirements Standards ISO 11801 Generic Cabling A 2 Organization emu lum anlem 1 5 total gt 20 1500 ies sm ne 15 1 5 total n s iso igwal me 10 me 1 5 total gt 35 l 220 ns 5 ss 3 25 1 5 total 0 3 gt 20 n s 500 3 5 200 aes s20 ne soo 15 2 25 1 5 total 0 3 gt 20 n s 500 1 5 500 aes isw s20 ne soo as so 3 25 1 5 total 0 3 gt 20 n s 500 3 5 500 225 sm ns as 2 25 1 5 total 0 3 gt 20 n s 500 3 5 500 aes isw ne soo as 150 3 25 1 5 total 0 3 520 n s 500 3 5 1500 225 s20 ne 15 2 25 1 5 total 0 3 gt 20 n s 500 1 5 500 ns 10 wa 1 5 total gt 35 n s d 1 5 total gt 20 ns am 1 5 total 1 5 total km P 500 1 5 total 1 5 total Organization o i c
14. Job List screen itl hr 0 2 Highlight the desired Job 3 Press the Options Soft key to view the folder options list 4 Highlight desired function and Press o to select HEN Jn 5acluctuad Jobs Eeaane Job Hake Job Curre mt lio Balata Jiba 34 FIBERTEK Reference Guide Viewing Result Details When an Autotest is saved the data is stored with a unique name Test results can be viewed printed or deleted from the Stored Tests screen 1 On the Ready screen select Stored Tests to open the Job List screen 2 Highlight the desired Job 3 Press o to open the job 4 Press the Arrow keys to highlight the desired test record 5 Press to open the record at any time to return to the previous screen 35 CHAPTER 3 TRACETEK Reference Guide TRACETEK Reflective Anomaly Detection RAD System TRACETEK is a Reflective Anomaly Detection RAD system composed of two parts e LANTEK 6 7 Cable Certifiers Display Handset only TRACETEK Optical Transceiver Module The LANTEK Display Handset provides power user interface storage and signal processing abilities to the TRACETEK module The TRACETEK module converts the LANTEK electronic TDR signals to optical and optical back to electronic The primary use of this system is to locate optical reflections from cable discontinuities such as connectors splices fractures 1 e crac
15. K Application Notes To illustrate this point we have provided some magnified images of connectors cleaned with various methods T pA P LE vu x E 2 0 Dirty Wiped Cleaned Cleaned connector clean on shirt wIDEAL with finger cleaning kit 14 26 B27137803 HH 85H 138Hnn Fiber IDERL Tracetek 11 58 234 83 Again using the same fiber but before the connectors were cleaned the figure above displays the results when the optimal TRACETEK resolution mode is not selected In this case the Medium Resolution mode was used The resulting Fresnels are much higher than before and the Batman ears are caused by the saturation of the receiver This is due to excessive reflection B 9 Application Notes 16 42 82 15 65 EM B85H 13HBHBnm Fiber IDEAL Tracetek 11 89 After cleaning the two center connectors shown in the figure above it is apparent there 15 some improvement in return loss However 1 this case we expect the Fresnel to be larger than before because of the higher launch power TRACETEK uses in the Medium Resolution mode Also notice that the Fresnels are wider than before This width is known as the dead zone which 15 the distance that the receiver is blinded by the reflection of each event High output power and dirty or poorly polished connectors will lead to an increased dead zone
16. M 1550nm Loop back The Single Fiber options are selected when the LANTEK Remote Handset is placed at the far end of a link with the light source continuously running The Display Handset must be set to match the wavelength being transmitted by the FIBERTEK module attached to the Remote Handset For example if the 1300nm module is placed in the Remote Handset and the 850nm module is in the Display Handset you should select MM 1300nm Single Fiber from the Fiber menu on the LANTEK Note Length measurements are not available in Single Fiber mode The Loop back mode is used when testing a single fiber or a pair of fibers with a loop back jumper placed at the far end of a link In the Loop back mode only the Display Handset is used for testing Both attenuation and length results are available when using the Loop back testing mode Setup and Calibration for Single Fiber and Loop back Testing Single Fiber calibration can be done using either Method A or B as described above Method A procedure 1 Attach the FIBERTEK modules to the LANTEK handsets making sure the module connected to the Remote Handset is the wavelength you want to test 2 Connect one launch cable to the TX port of the adapter on the Remote Handset 3 Connect a second launch cable to the RX port of the adapter on the Display Handset 4 Use a coupler to connect the two launch cables together From the Fiber menu of the LANTEK choose the Single Fibe
17. a return loss of approximately 30 to 40 dB meaning 1 to 01 of the power was reflected upstream Factory terminated Ultra Physical Contact UPC connectors usually perform to 50 dB or better 001 reflection Using TRACETEK B 2 The TRACETEK module uses a very high power infrared laser for both multimode and single mode testing The light emitted from TRACETEK 15 invisible so take care when using TRACETEK or examining connectors not to look directly into the connector or examine it with an inspection scope unless you are certain the module 15 powered off or disconnected Appendix B TRACETEK Application Notes 1 With the TRACETEK module attached to the LANTEK 6 7 connect the 2 p module to the fiber under test with the included FC ST FC FC for single mode launch cable Unlike an OTDR TRACETEK does not require the use of long launch cables its dead zone is short enough that any jumper of 2 m 6 ft or more can be used Turn on the power to the di LANTEK Choose the Analyze key 12 45 42 15 83 HH 656 1566nn Fiber IDEAL icon then press the In the TRACETEK Analyze menu there are three options to choose from High Resolution Medium Resolution and Low Resolution This setting will use Gi a change the pulse with laser power that is fired into the cable In this case resolution is the opposite of distance meaning that the short cables are bett
18. ber last connector or break in cable 4 Cursor 5 Total length of fiber 6 Cursor position B 6 Appendix B TRACETEK Application Notes The TRACETEK display provides a roadmap of the fiber at a glance The number at the bottom of the screen marker 5 indicates the measured distance to the end of the fiber As with TRACETEK does not require a piece of equipment or a person at the opposite end of the fiber under test For this reason TRACETEK cannot differentiate between the expected end of the fiber or a break in the cable If there is a break in the cable this reading will tell you how far down to look for the break Marker 1 indicates the first connector attached to your launch jumper Marker 2 indicates the two connectors in the middle of the fiber under test The height of the reflected pulse called a Fresnel indicates the relative reflection of each event In the High Resolution mode a good connector should not go much above the halfway point on the display In this example the two connectors should be cleaned and the first appears to be a bit worse than the second Marker 3 is at the end of fiber This reflection is expected to be quite large since it is at the end of the cable and represents a glass to air interface Markers 1 and 6 indicate the user moveable cursor and its position respectively The cursor can be move by three methods in very fine steps using the left and right arrow keys on the keypa
19. ce Guide Test Setup 20 The test setup for method adds a second launch cable after calibration This effectively adds another connector pair to make up for the pair that was factored out during calibration By doing so there are two connector pairs are measured during the test which 1s the most accurate method for short fiber links Method B most closely simulates the conditions that are present during normal network operations The reason for this 1s during calibration the loss of the connector pair 15 factored out of the attenuation measurements but during actual network operations the loss of the patch cords affects the overall attenuation making it important to know how the additional loss will affect the overall link Method adds in another jumper after calibration to simulate the conditions of actual network operation The problem with method in general is that when using dual fiber test systems it becomes difficult to add in a single jumper to the receiver at each side To solve this problem an alternate to Method B test configuration is used in conjunction with the Method A calibration routine A Jumper Aeterence Cable t B i 0 e G A E E a Figure 9 Method B Test Setup FIBERTEK Reference Guide Method B Alternate Test Setup The Method B Alternate test configuration makes it possible to use a dual fiber
20. ch cable Page 5 of 5 Customer FIBERTEK TRACETEK Fiber Optic Loss Measurement amp Troubleshooting Accessory Kit User s Guide Table of Contents FIBERTEK Reference Guide Interpreting Autotest Ie CSUN OZ Dg c Ax MB Kopon DE VETRO Xm 32 Product 0 00000000 1 i Figure 1 Basic Singlemode Kit w Fiber Cleaning Starter Kit 3 Figure 2 Basic Multimode Kit w Fiber Cleaning Starter 22 4 Premium Singlemode Kit w Fiber Chapter 1 Introduction FIBERTEK allows you to perform optical power loss measurements for both Singlemode and Multimode fiber optic cables on either the LANTEK 6 or 7 Cable Certifiers The fiber testing performed makes use of VCSEL or laser sources for all wavelengths permitting certification of Gigabit Ethernet applications on the fiber optic cable Both Singlemode and Multimode kits are capable of e Length measurement Bi directional testing Voice communications is an advanced troubleshooting tool designed to quickly identify and provide assistance in diagnosing common cabling problems This product offers trace results e Showing single fiber length e Showing optical return loss events such as connectors breaks and most other types of reflective even
21. creen instructions 5 After calibration disconnect the launch cable from the RX port and connect a second known good launch cable to the RX port for testing Page 4 of 5 Customer Appendix B FIBERTEK amp User s Manual Update In order to allow users of FIBERTEK and TRACETEK to test more extensive range of cabling systems the fiber optic launch cables and couplers that were included with FIBERTEK and TRACETEK have been changed Please use this inventory list to replace the inventory pack out description on pages 3 6 of the FIBERTEK TRACETEK Users Manual 6510 00 5010 Rev D Multimode FIBERTEK kits now include 50um Cable Kit o 1x1 meter 3 3ft ST ST duplex launch cable 2 2 6 6ft ST ST duplex launch cable e 62 5um Cable Kit o 1 1 meter 3 3ft ST ST duplex launch cable 2 2 meter 6 68 ST ST duplex launch cable e Fiber Couplers o 4 Single mode ST ST couplers single mode couplers used to increase repeatability and performance Single Mode FIBERTEK kits now include Cable Kit o 1 1 meter 3 3ft FC ST duplex launch cable o 2x 2 meter 6 6ft FC ST duplex launch cable e Fiber Couplers o 4x Single mode ST ST couplers Multimode TRACETEK kits now include 50um Cable Kit 1x 2 meter 3 3ft FC ST simplex launch cable 1x 2 meter 3 3ft FC SC simplex launch cable 62 5um Cable Kit 1 2 meter 3 3ft FC ST simplex launch cable 1 2
22. ctors on patch cords Clean and inspect with a fiber inspection scope IDEAL 45 332 Never look into a connector where the opposite end is connected to live equipment including the FIBERTEK modules Clean the connectors on the FIBERTEK modules with cleaning swabs Any dirt on patch cords will be transferred to the module connectors 15 FIBERTEK Reference Guide e Check for continuity of patch cords with a fiber continuity tester IDEAL VFF5 Autotest Configuration 16 Having the correct test configuration 15 critical to achieving accurate test results Since FIBERTEK is a dual fiber test system the test configuration will vary slightly from the usual methods used with single fiber test systems There are two general methods used for calibration and three methods used for testing with optical loss test sets such as FIBERTEK These methods are described in TIA EIA 526 7 and 525 14 standards These methods are commonly described as Method A Method B and Method B Alternate FIBERTEK Reference Guide Method A Calibration Setup The Method A calibration uses two launch cables and a set of couplers This is the recommended calibration procedure for FIBERTEK as it does not require disconnecting of the launch cables from the modules Fieference Cable 1 Fisference Cable 2 Ce Figure 6 Method A Calibration Setup 17 FIBERTEK Reference Guide Test Setup The Method test setup
23. d in medium size steps using the and soft keys or in large steps by holding the button while pressing the left and right arrow keys on the keypad B 7 Application Notes B 8 16 36 82 13 83 85H 13HHnn Fiber IDEAL 4 Tracetek 20 2 dB T bd m In the figure above the display shows a trace of the same fiber as before but the two connectors in the middle were cleaned using the IDEAL Starter Cleaning Kit included with your TRACETEK module It is clearly evident that a dirty connector even one that appears clean to the naked eye can cause significant return loss problems in the link After being cleaned both connectors are well below half scale and should present no problems with network operation Cleaning connectors with any fiber optic system is of utmost importance Whenever there 15 any doubt about a test result the first action 15 to clean the suspect connectors and retest the link There are many creative ways to clean connectors and we ve seen quite a few of these methods used in the field It s also common that test technicians do not take the time to visually inspect or clean connectors before testing the link Some technicians will check for cleanliness with their naked eyes but the human eye cannot possibly see the type of contaminants that affect fiber optic connectors Cleaning is a mundane but very important task Appendix B TRACETE
24. e Press the Length key on the Display Handset or on the screen i select and press Then select Length and press e HH FI a5H 13HHnn Fiber BER 29 FIBERTEK Reference Guide Dual Wavelength Attenuation Test Setup l LI With the appropriate test adapter on the Display Handset and the appropriate test adapter on the Remote Handset connect one end of the near end launch cable leads to the TX and RX connectors on the Display Handset adapter Connect the other end of the launch cable leads to patch panel that connects to the fiber under test Connect one end of the far end launch cable leads to the TX and RX connectors on the Remote Handset adapter Connect the other end of the far end to the wall plate fiber cable under test Check all connections to ensure proper contact Upon completion you are ready to perform a fiber test Launch Cable _ Launch Cable d LI L o Display Handset Remote Handset 30 Figure 14 Dual Wavelength Attenuation Testing Configuration FIBERTEK Reference Guide Dual Wavelength Attenuation Testing Press Autotest on the Display Handset or Remote Handset to begin the test or select on the Display Handset Ready Screen and select Attenuation in the Analyze screen H8 55 66 65702 Fu 5H 13B8Hnn Fiber HH 8 FIBER Length Loopback Length No
25. e Type from the LANTEK display menu on the Display Handset Ready screen The Fiber Cable Type screen appears 42 Reference Guide E 1 Highlight the oe fiber type S eps and press accep th new fiber typ Ns SH 131H 155Hnn Fiber HH 85H 85Hnn Fiber HM 1388 13BBnn Fiber SM 1318 1318nn Fiber SM 1558 155Bnn Fiber Note TRACETEK will function properly as long as any fiber type is actively selected 5 From the Ready screen of the LANTEK main unit Press or select Analyze L to open the Analyze menu screen 82 26 83 SERO Resolution TRACETEK Low Resolution 6 Inthe Analyze menu there are three choices of resolution High Medium and Low The default resolution is High High Resolution provides accurate back reflection measurement for up to 800 meters of fiber and will resolve individual events as close as 2 meters apart at rated accuracy 43 Reference Guide 44 Medium Resolution provides accurate back reflection measurement for lengths over 250 meters and will resolve and measure events 8 meters and up at distances of up to 850 meters Low Resolution provides accurate back reflection measurements for lengths of 500m to 4km a 7 Highlight the desired resolution and press ie The LANTEK Cable Certifiers will conduct the measurement 8 When the test is complete the results are
26. eck the relative reflection of events to identify defective connections Unlike an is exceptionally easy to use The only setup consists of choosing from one of three operating modes High Medium or Low Resolution The lightweight module is small enough that it can be carried in the installers test equipment case making it available in any situation that requires fiber troubleshooting Since TRACETEK does not measure fiber scattering it cannot measure the insertion loss of the link or individual connectors like OTDR can But at or less than the cost of a traditional OTDR and with the most important trouble shooting features of an OTDR TRACETEK is the best choice for impromptu fiber troubleshooting tasks 40 Reference Guide Using TRACETEK The TRACETEK system is simple to use and requires no warm up time 1 2 Insert the adapter into the LANTEK Cable Certifier Clean the launch cable and attach it to the adapter Using a Good Quality mating adapter attach the launch cable to the fiber to be tested Clean all connections Make sure the launch cable connector is aligned with the TRACETEK connector slot to assure proper mating of the connector 41 Reference Guide Fiber under best End of Cable c Display Handset Figure 15 LANTEK TRACETEK Configuration on a Fiber 4 Select a Fiber Cabl
27. ecting the icon from the Ready Screen Autotest test the attenuation and round trip length while the Analyze modes test wither attenuation or length a Launch Cable Wall Plate 1 Loopback Jumper Fiber Under Test Patch Panel Display Handset Figure 12 Configuration for Loopback Testing 26 FIBERTEK Reference Guide HH 85H 13HHnn Fiber FIBER Attenuation Length HH FI a5H 13HHnn Fiber BER 27 FIBERTEK Reference Guide Length Test Dual Handset Configuration Setup for Length Testing 1 With the appropriate test adapter on the Display Handset and the appropriate test adapter on the Remote Handset connect one end of the near end launch cable leads to the TX and RX connectors on the Display Handset adapter 2 Connect the other end of the launch cable leads to patch panel that connects to the fiber under test 3 Connect one end of the far end launch cable leads to the TX and RX connectors on the Remote Handset adapter 4 Connect the other end of the far end to the wall plate fiber cable under test 5 Check all connections to ensure proper contact Upon completion you are ready to perform a fiber test Launch Cable 7 j 8 Wall Plate Fiber Linder Test Patch Ceti play Hare set emote Handset Figure 13 Configuration for Dual Handset Testing 28 FIBERTEK Reference Guid
28. ent condition and has very clean connectors to prevent false failures Method B is traditionally used with power meter light source kits that have a light source at one end of the link and a power meter at the other end The calibration requires that a single launch cord be connected between the source and detector during calibration Then the launch cord is disconnected from the detector never disturb the connector on a light source after calibration and a second cord is attached to the detector Since no connector pairs are coupled together during the calibration process the test will measure the loss of both connector pairs and the fiber on the link being tested This method is ideal but cannot be easily implemented with dual fiber testers such as FIBERTEK in the dual fiber mode However if you plan to use FIBERTEK in the single fiber or loop back modes Method B is acceptable and provides accurate results Page 1 of 5 Customer Single Fiber and Loop back Test Modes Version 1 301 adds the ability to configure and use FIBERTEK to test single fibers in one of two methods This ability is especially useful for quick certification of fiber jumpers or other links where single wavelength testing is desired In the Fiber menu of the LANTEK there are eight new options These are MM 850nm Single Fiber MM 1300nm Single Fiber SM 1310nm Single Fiber SM 1550nm Single Fiber MM 850nm Loop back MM 1300nm Loop back SM 1310nm Loop back S
29. er of connectors and splices and maximum attenuation for each of these are entered into the calculator to determine the proper loss budget Setting the Loss Budget Manual Loss Budget Skip to next page for calculated loss budget procedure 1 Select a wavelength by pressing the F1 F4 keys 2 Usethe arrow keys and numeric keypad to enter a value into the Loss Budget field Note do not press ENTER until finished entering data for all fields This will end the loss budget process 3 Select another wavelength with the FI F4 keys and enter the loss budget 1388nn Loss Budget 80222 dB ee 4 Press J to complete the HH Core Diameter set to 5H Hp process 11 FIBERTEK Reference Guide Setting the Loss Budget Continued Calculated Loss Budget 1 Choose a wavelength to adjust by pressing the F1 F4 keys 2 Press the key then select Core Diameter set to 5H Hp Loss Calculator 3 Using the Up Down arrow keys D 08 42 W5 85 82 to move between fields and the ES nm Left Right arrow keys to scroll FIBER through a field enter values with Enter the numeric keypad for cable EXE 85Hnm Loss Budget dB length loss km splices connectors and rep HM Core Diameter set to 5H Hp 4 Press QE update the L i x 4 J all budget then press Jtosave Repeat for each wavelen
30. er tested with High Resolution and long cables are better tested with Low Resolution Appendix B TRACETEK Application Notes Table 1 Resolution Settings and Recommendations Med 250 850 m 820 2790 ft Low 500 4000 m 1640 13120 ft Note The recommendations for distance do not reflect the absolute minimum or maximum distance capabilities of TRACETEK These are recommendations that will yield the best results in most cases You should feel free to experiment and determine the setting that gives the best result for a particular test configuration High Resolution This mode is optimized for short distance cables with lengths of no more than 800 m Use the High Resolution mode for most horizontal links and shorter backbone cables The low power setting used in the High Resolution mode will minimize screen clutter caused by receiver saturation and will keep the dead zone between connectors to a minimum allowing the tester to identify individual connectors in close proximity to each other in situations such as cross connect cabinets Use this setting to check for connector quality Connectors with a good finish should not rise above half scale on the TRACETEK display B 4 Appendix B TRACETEK Application Notes Medium Med Resolution Medium resolution combines the short distance setting with a high power laser pulse By using a longer launch pulse the Medium Resolution mode will identify events that are not visible
31. ess cumbersome than dual handsets When loopback mode 15 used only one wavelength is measured Additionally the length result 15 the round trip distance remember that when testing a two fiber link the actual length will be half the reported length Setup amp Field Calibration Field calibration for loopback testing requires only the LANTEK display handset and sets the reference power level for attenuation measurements 1 Attach the desired module FIBERTEK module to the display handset Choose fiber from the READY screen 2 Select the single wavelength test that matches the module p attached to the 1388 1388nn Fiber SH 131671316nn Fiber TNI andset SM 155B 155B8nn Fiber 13HHnn Fiber SH 131Hnn Fiber SH 155Hnn Fiber 24 FIBERTEK Reference Guide 3 Select a loss budget m 7 according as 15 13 6 04 03 described earlier in Cat 6 258 UTP Pern the manual 4 Select the Field Calibration option from the Ready Screen 5 Connect one end of the reference cord to the display handset Connect the opposite ends together with a coupler and begin the calibration by pressing the softkey LLBE OL Figure 11 Loop Calibration Setup 25 FIBERTEK Reference Guide Loopback Testing Loopback testing can be performed by using either the Autotest function by pressing the TEST button or through the Analyze menu by sel
32. gth H 1 Fiber Press again to store values Length n Loss kn 83 58 return to the READY screen Spl ices Hun 88 Loss BB 3H Connectors Hun B1 Loss 8B 75 Repairs 0 Loss HH BH 5Hnn Loss Budget 901 1 Note Where possible use manufacturer specifications for cable attenuation loss km otherwise refer to Appendix A for default values When counting connectors only count connector pairs excluding any connections that are present during the field calibration process 12 FIBERTEK Reference Guide Field Calibration General Field calibration is a process that allows the FIBERTEK to obtain a reference level for loss measurement The accuracy of the field calibration depends on the amount of warm up time allowed prior to starting the calibration process Refer to the accuracy specifications on page 7 for details Launch Cable Launch Cable Mating Sleeves Whenever possible use Singlemode rated mating sleeves regandiess of the liber These matey will exhibit mechamecal tolerances Display Handset Remate Handset Figure 5 Preferred Setup for Field Calibration Note Allow the adapter a proper warm up time prior to field calibration This will ensure specified accuracy Be sure the launch cables are the same type of fiber as the cable being tested i e 50um jumpers to test 50um cabling 13 FIBERTEK Refe
33. ked or broken strands or other anomalies occurring within an optical fiber network Warning The TRACETEK adapter generates light pulses up to 50 mW in power DO NOT look into the adapter or the fiber under test as serious eye injury may occur TRACETEK is an alternative to using OTDR and functions in a similar manner Both methods will produce traces of optical back reflection for analysis by technicians However the Rayliegh scatter measurement used by the OTDR to infer fiber loss 15 not used in TRACETEK Note True loss measurements can only be made with an Optical Loss Test Set such as TRACETEK s companion product FIBERTEK 36 Reference Guide TRACETEK vs OTDR OTDR Operating Principles The OTDR Optical Time Domain Reflectometer is a device that is able to look at a fiber optic cable and display a graphical representation of the events that occur on the cable The basic concept is that a high speed laser fires a precise pulse of light into the fiber after which the device monitors the same fiber for reflections The time between the launched pulse and reflected pulses 15 computed to represent the distance to the events that caused the pulses This gives the OTDR the ability to not only measure the length of the fiber but also measure the distance to each event on the fiber This function allows the OTDR to be used as a trouble shooting tool to find breaks in the fiber and to identify the location
34. les e change in fiber cable type e change in the adapters power turned OFF or ON for either of the units when the test setup is moved when a connector is disconnected from the port of a FIBERTEK module Note It is absolutely critical to maintain accuracy after calibration that the connectors not be disconnected from the FIBERTEK modules FIBERTEK Reference Guide Performing a Field Calibration l Connect the Display and Remote handsets as indicated in figure 5 above Make certain that the patch cords connected are compatible with the fiber type under test 50Um vs 62 5um Turn on both handsets For best accuracy wait 5 minutes to allow the lasers to warm up and settle During the warm up time clean all couplers and launch cables and check launch cables for dirt scratches and chips with a fiber optic inspection scope Clean the connectors inside the FIBERTEK modules with optic cleaning swabs as well F sae from the Ready screen and press A To start the field calibration process press the key Calibration takes about a minute after which you should see a icon indicating the calibration was successful If the calibration fails check for the following conditions as they are the most common causes of failures Verify the polarity of the patch cords The transmit port Tx of one module must be connected to the receive port Rx of the other module e Dirty conne
35. module installed in the handset 1 Select Jon the Display Handset Ready screen The Fiber Cable Type screen appears 2 Highlight the option that corresponds to the installed 85H 13BHHnnm Fib FIBERTEK module IDEAL SH 131H 155Hnn Fiber HH B85H 85Hnn Fiber 3 Ifthe loss budget I has already Hbc m WE a SH 131H 131Hnn Fiber SH 155H 155Hnn Fiber been set press to continue with the previously set values OR Press the Budget key to enter the loss budget mode Loss Budget Description 10 The loss budget setting adjusts the pass fail threshold for attenuation measurements made with FIBERTEK Since the loss budget value does not effect the actual attenuation measurements this function 15 for informative purposes only When the measured attenuation 15 less than or equal to the loss budget a vi is displayed If the attenuation is greater than the loss budget a displayed The loss budget be set in one of two ways by manually entering a value or by using the loss budget calculator FIBERTEK Reference Guide Manual Loss Budget configures a fixed loss limit value for each applicable wavelength This mode 15 useful when the acceptable system loss has been specified or when testing to application specific limits such as those listed in Appendix A Calculated Loss Budget lets FIBERTEK calculate the limits for each wavelength based on parameters you specify Fiber length numb
36. ns that like an OTDR TRACETEK can measure the overall length of a fiber as well as measure the distance to reflective events within the fiber Unlike fiber test kits that also measure overall length TRACETEK only needs to be connected to one side of the fiber to make its measurements Traditional fiber test kits need to either have hardware connected at both ends of the fiber or a loop back cable installed at the far end to make its length measurement This means that two technicians are required to test the length or one technician can perform the test by walking back and forth to test each strand taking twice as long to finish the job Key Elements of TRACETEK Display 1 Start pulse first connector 2 Reflective events 3 End of fiber last connector or break in cable 4 Moveable Cursor TRACETEK Display 5 Total length of fiber 6 Cursor position 39 Reference Guide TRACETEK displays its measurement data in a graphical format similar to that of an ODTR with the X axis representing the distance from the handset and the Y axis displaying the relative reflection Return Loss of each event TRACETEK instantly displays the overall length to the end of the fiber and allows the operator to scroll a cursor to find the distance to any event on the screen This functionality allows the operator to quickly measure overall fiber length locate breaks in the fiber locate individual reflective events and ch
37. or Keep your connectors clean Appendix B TRACETEK Application Notes Q2 What will happen if set the Resolution incorrectly A2 Incorrectly setting the Resolution of TRACETEK will not cause any damage to the tester or cable It will usually result in a garbled display that 15 a result of too much power being injected into a short cable leading to very high reflections since the cable itself cannot attenuate the return pulse Or in the case of a very long cable there will not be enough power for TRACETEK to see the end meaning it will be unable to properly scale the screen Here are a few images that result when the Resolution setting is not optimally set for the fiber being tested Figures 5 8 In this example a 1000 m cable was tested with the Resolution set to MED The result is that the ramp time which adjusts the scaling 15 too short The recommended maximum distance for MED mode is 850 m Change to LOW Resolution and try again With the Resolution now set to LOW the end of the 1000 m fiber is Clearly visible 15 38 82 14 03 15 38 82 14 03 p HH 85H 13BHHnm Fiber IDEAL TRACETEK 997 19 n Zoon in Zoon out n eu Appendix B TRACETEK Application Notes Here 45 mcable 15 tested with the MED Resolution mode Although the length of the cable 15 correctly identified there is so much power that the receiver is detecting echoes in the cable Choosing the HIGH Resolution
38. r option that matches the FIBERTEK module connected to the Page 2 of 5 Customer Remote Handset For example choose MM 850nm Single Fiber if the FIBERTEK 850nm module is in the Remote Handset and you want to test the fiber at 850nm Choose Field Calibration from the LANTEK main screen and follow the on screen instructions After calibration disconnect the two launch cables from each other and connect to the fiber you wish to test a Optionally add a 3 launch cable to the Display Handset to compensate for the connector loss that is calibrated out see Method A above Method B procedure preferred method for Single Fiber testing 1 Attach the FIBERTEK modules to the LANTEK handsets making sure the module connected to the Remote Handset is the wavelength you want to test Connect one launch cable between the TX port of the adapter on the Remote Handset and the RX port of the adapter on the Display Handset From the Fiber menu of the LANTEK choose the Single Fiber option that matches the FIERTEK module connected to the Remote Handset For example choose MM 850nm Single Fiber if the FIBERTEK 850nm module is in the Remote Handset and you want to test the fiber at 850nm After calibration disconnect the launch cable from the Display Handset and connect a second Known good launch cable to the Display Handset Loop back calibration and testing involves only the Display Handset Page 3 of 5 Customer 22 EM T9
39. r set to 5H Hp sc Figure 1 Figure 2 Figures 3 and 4 show the same link now failing The FIBERTEK screen tells the degree of link failure but it does not help isolate the problem The TRACETEK test shows the connector at 761 m 1s nearly full scale an indication that it has become dirty or damaged Appendix B TRACETEK Application Notes Ss 14 45 02 14 83 B85H 13BHHnn Fiber MM 858 138B8nn Fiber Q IDEAL IDEAL lt nn 2 9 dB Budget 4 3 dB Hargin 13BBnn 8 8 Length Tr n HM Core Dianeter set to 5H Hp Figure 3 Figure 4 In this situation the best course of action 1s to clean the connection at 760 m and check it with a microscope IDEAL P N 45 332 before re testing Consult the instructions included with the IDEAL Starter Cleaning Kit for the best methods to clean connectors and couplers Q amp A Identifying TRACETEK Configuration Problems Q1 Why is it so important that my launch cable connectors are kept so clean A Unlike a traditional light source the most high powered of which have output levels significantly less than TRACETEK s high power laser source launches up to 50 mW of power When dealing with return loss measurements more power out means more power back With the levels that TRACETEK operates at a dirty launch cable will immediately reflect a large amount of power back at the detector essentially causing temporary blindness of the detect
40. rence Guide 14 The setup depicted on the previous page 15 the normal calibration configuration for all tests that use both handsets This includes Autotest as well as the Attenuation and Length tests which are accessed through the Analyze menu Calibration configuration for Loopback Attenuation is described later in the manual Note If the FIBERTEK unit has been stored in a location substantially colder than the area where measurements are to be taken allow the unit to warm up to the ambient temperature with the protective dust caps in place to prevent condensation on the transmitter or receiver diode lenses Thoroughly clean the laser and receiver lenses prior to attaching the launch cables using the Fiber Cleaning package supplied with your Basic or Premium Kit which contains a high quality cleaning solution and lint free wipes Contact your local distributor for cleaning kit refills Replace dust caps immediately after launch cables are removed The calibration data 1s recorded and stored by the Display Handset The loss effects of launch cables and couplers that were present during field calibration are subtracted from the attenuation results during testing Care must always be taken to use launch cables of the same fiber type as the fiber to be tested When testing fiber optic cable a field calibration 1s required every time any one or more of the following events occur e substantive physical movement or change to the launch cab
41. s length 15 added to your distance measurements and keeping a conveniently short cable will minimize any offset in length measurements TRACETEK utilizes a special technology that allows the use of very short launch cables unlike an OTDR whose front end dead zone may be 20 100 m long and require the use of very long launch cables B 15 Application Notes To maximize the performance of your IDEAL fiber optic testing and troubleshooting tools it is vital to have them factory calibrated annually For technical assistance service calibration or questions about TRACETEK please contact IDEAL INDUSTRIES at the following locations Americas IDEAL INDUSTRIES Corporation 9145 Balboa Avenue San Diego CA 92123 Tel 800 854 2708 Fax 858 278 5141 Germany Italy Spain Portugal Switzerland Austria Netherlands Belgium Luxemborg Eastern Europe MEA IDEAL INDUSTRIES GmbH Gutenbergstrasse 10 85737 Ismanning Germany Tel 49 89 99 686 0 Fax 49 89 99 686 111 E mail ideal germany idealindustries com United Kingdom France Sweden Norway Finland Denmark Iceland IDEAL INDUSTRIES UK Ltd 225 Europa Boulevard Gemini Business Park Warrington Cheshire WA5 7TN England Tel 44 0 1925 444 446 Fax 44 0 1925 445 501 Email ideal_uk idealindustries com IDEAL Industries China L L C Unit 505 Tower W1 The Towers Oriental Plaza No 1 East Chang An Avenue Dong Cheng Di
42. s of calibrating obtaining a reference value with FIBERTEK These are known as Method A and Method B Method A is the preferred option when using FIBERTEK This form of calibration uses two sets of launch cables between the FIBERTEK modules This means that the reference plane is the interface between the two sets of cables By using two sets of launch of cables during calibration the connectors between them are calibrated out of the measurement during normal testing This means that when a link with two sets of connectors is tested the measurement will include the loss of the cable under test and one set of connectors This means the indicated loss will be slightly less than the actual loss and in a LAN environment where loss budgets are small this needs to be corrected However if you are testing a long distance backbone where the loss of a connector pair lt 75dB is insignificant compared to the fiber no correction is needed To correct for the pair of connectors that is calibrated out during calibration when using Method A perform the calibration and separate the two launch cords then add a 3 short launch cable to the existing launch cable on one of the handsets This will add in the small loss that is calibrated out during calibration and the test results will more closely replicate the actual conditions that the network will encounter during operation It is important that the 3 launch cable be in excell
43. st field OTDRs cost upward of 60 000 putting them out of reach of everyone except large service providers Today OTDRs are smaller less expensive and easier to use But that still does not mean that the average installer can pick one up and begin using it The technician still needs to understand the complex relationship between pulse width dynamic range acquisition time Rayleigh scattering and a myriad of other factors that determine what type of picture the technician will get from and OTDR But nonetheless the improved functionality smaller size and lower cost have brought the OTDR into the realm of short haul LANs Whereas an OTDR was once only used to find problems in short haul networks they are now being used as documentation tools to help map out Sart Pulse fiber links showing the location of connections and Reflective Event ope d line precise length of each _ indicates link A amount of P fiber scattering hber loss of peak Fresnel i nadca es dared Back scatter e reiecta Doer 5 better Typical OTDR Trace Reference Guide TRACETEK Operating Principles TRACETEK is able to provide most of the troubleshooting functions of an OTDR at a fraction of the cost with a simple easy to use interface that requires almost no training Like and OTDR TRACETEK fires a precise laser pulse into a fiber and monitors the fiber for return pulses This mea
44. strict Beijing 100738 China Tel 86 10 8518 3141 86 10 85 18 3142 Fax 86 10 8518 3143 LANTEK 6 7 Cable Certifiers and Accessories Worldwide Sales Offices Americas IDEAL INDUSTRIES INC 9145 Balboa Avenue san Diego CA 92123 Tel 800 854 2708 Fax 858 278 5141 Becker Place Sycamore IL 60178 800 435 0705 in USA 815 895 5181 Ajax Ontario L1S 2E1 Canada 800 527 9105 in Canada 905 683 3400 Germany IDEAL INDUSTRIES GmbH Gutenbergstrasse 10 85737 Ismaning Germany Tel 49 89 99686 0 Fax 49 89 99686 111 United Kingdom Ideal Industries UK Ltd 225 Europa Boulevard Gemini Business Park Warrington Cheshire WA5 7TN England Tel 44 1925 444446 Fax 44 1925 445501 2003 IDEAL INDUSTRIES INC All Rights Reserved Part No 6510 00 5010 Rev D Specifications subject to change without notice Printed in USA 2003 06 World Wide Web www ideallndustries com Application Notes B 2 Appendix A Special Instructions for New Fiber Testing Functions FIBERTEK Field Calibration Proper field calibration is essential for accurate measurements when testing fiber optic links with a power meter light source kit The FIBERTEK accessory for the LANTEK cable certifier must be set up slightly different than a traditional power meter light source since each end of the products contains both a laser source and detector There are two TIA recognized method
45. t results can be stored in the LANTEK internal tester memory or Compact Flash memory card and accessed later using the Stored Results feature Autotest results can be saved immediately following the test Only overall passed Autotests can be saved using the Autosave feature Failed test can be saved manually Test results are automatically saved if the AutoSave preference is enabled Refer to Setting Autotest Preferences in the LANTEK 6 7 User s Guide Test names are automatically assigned to completed tests when the Auto Increment feature 15 enabled If a different name 15 desired a test can be named manually using Save As Manually Saving Autotest Results AutoSave Disabled 1 manually save Autotest select Save located at the bottom of the screen The Test Saved screen will be displayed for a brief period showing the name the test is saved under If the current name already exists a warning screen appears asking you to overwrite the currently existing file or enter a new file name to exit and return to the previous screen without performing save operation or select to overwrite the existing file 33 FIBERTEK Reference Guide Manipulating Job Folders When an Autotest is saved the data is stored with a unique name Test results can be viewed printed or deleted from the Stored Tests screen 1 Ready screen select E T 2779 B Stored Tests to open the
46. te Press to cancel the test and return to the Ready screen When the Autotest is completed the results of the test are displayed 8 55 6785 2 08 56 66 85 82 HH 85H 13BHHnn Fiber 5H 13HHnm Fiber FIBER R 13HHnn gt H 1b5 dB d 13HHnn gt H H1 dB Budget 65 868 dB Budget H5 HBH dB Margin amp 85Hnn 4 61 dB Hargin 4 82 dB Length 5 5 M Core Diameter set to 5H Hp HM Core Diameter set 58 89 Screen Results thru Autotest process or Screen Results thru Analyze process 31 FIBERTEK Reference Guide Interpreting Autotest Results Pass Fail Reporting 32 The overall Autotest result 15 displayed at the top right of the Autotest display screen Individual Autotest results are displayed to the right of each test 14 44 42 14 03 HH 85H 13HHnm Fiber v4 IDEAL lt 85Hnn 2 3 Budget 4 3 dB Hargin 13HHnn 1 8 dB Length HH Core Diameter set to 5H Hp RIS Overall Test Result Symbols Symbol Overall Autotest Result Overall test result is a pass if each individual test 15 a pass Overall test result is a fail if one or more individual test 15 a fail Individual Autotest Reports Symbol Individual Autotest Result Pass All values pass with sufficient margin Fail One or more values fail by a margin of failure greater than the instrument s specified accuracy FIBERTEK Reference Guide Saving Current Autotest Results Autotes
47. test system while measuring the actual loss of all the connections and fiber optic cable By using the Method for calibration and adding a new test jumper for testing the Method Alternate is useful for testing short links where the connectors make up a large portion of the link attenuation Reference eference j Cabe 1 NN 9 1 C C e d E F r Figure 10 Method Alternate Test Setup 21 FIBERTEK Reference Guide Recommended Setup Calibration Method amp Test Method B Alternate 1 Following a successful field calibration as described in Method A disconnect the Remote Handset launch cables from the couplers Note Once calibration is complete do not disconnect the cables from the FIBERTEK modules themselves 2 Connect another set of launch cables to the Display Handset launch cables You should have two sets of launch cabled connected to the Display Handset and one set connected to the Remote Handset Note It is critical that the additional cable added during the test setup for the Method B Alternate configuration must be known to be a high quality low loss cable without any defects Use of a sub standard cable will adversely affect the test results 22 FIBERTEK Reference Guide Performing a Fiber Autotest Autotest performs comprehensive tests using programmed testing limits An overall
48. timode kit plus the following components 1300 Multimode Adapter e FC ST Cable e Fiber Cleaning Starter Kit Cleaning Swabs Dry Cleaning Wipes Wet Cleaning Wipes Pouch Figure 4 Premium Multimode Kit w Fiber Cleaning Starter Kit FIBERTEK Reference Guide Specifications FI BERTEK Detector Receiver Wavelengths MM 850nm 1300nm SM 1310nm 1550nm FIBERTEK Transmitter Laser Type MM 850nm VCSEL MM 1300nm Fabry Perot MCW Grin Lens Focused SM 1310nm Fabry Perot MCW Grin Lens Focused SM 1550nm Fabry Perot MCW Grin Lens Focused FIBERTEK Measurement Accuracy Attenuation MM 850 1300nm 0 25dB SM 1310 1550nm 0 25dB Length 3 1 meter FIBERTEK Display Resolution Attenuation MM850 1300nm 0 1dB SM 1310 1550nm 0 1dB Length 1 meter 0 208 Length Range MM 850nm 3 000 meters MM 1300nm 6 000 meters 5M 1310nm 10 000 meters SM 1550nm 10 000 meters Physical Operating Temperature 10 to 30 C at specified accuracy Ambient Airflow 0 3Lf s linear feet second 20 C Network Specifications 1000Base SX LX F IEEE 802 3z lOBase FL FB ATM 155 622 FIBERTEK Reference Guide Specifications Continued TRACETEK Detector Center Wavelength Detector Type Min Refl for Event Detection Distances High Resolution Medium Resolution Low Resolution Distance Accuracy Event Spatial Resolution Display Resolution TRACETEK Transmitters MM Po
49. ting at its full capability Appendix B TRACETEK Application Notes One of the most common sources of excessive return loss is dirty or poorly polished connectors When there 15 too much reflection in a system the reflected power can interact with the downstream signal either increasing or decreasing the amplitude of the transmitted signal Additionally if the reflection is strong enough it can interfere with the feedback circuit on the laser transmitter causing fluctuations in output power Unlike a power meter which measures the loss across a link TRACETEK displays the relative reflection of events in a link allowing the user to 1solate and remedy problems Measuring Return Loss Simply stated return loss 15 the ratio of power reflected by a connector or other event compared to the power that arrived at the event The scale of measure for return loss 15 dB decibel Because the scale of return loss 15 by definition a negative value a larger negative number 15 better However by convention most people usually omit the negative sign and use it as a positive value For example a return loss measurement of 0 dB means that 100 of the power arriving at the connector was reflected back to the transmitter In reality a 0 dB measurement is impossible in fiber optic systems the worst reflection possible is about 14 dB which would be created by a perfect glass to air interface In most cases a field polished connector will yield
50. ts e That can be stored and uploaded for viewing with LANTEK Reporter LANTEK is a registered trademark and FIBERTEK TRACETEK are trademarks of IDEAL INDUSTRIES Introduction Chapter 2 FIBERTEK Reference Guide FIBERTEK Basic Kit Singlemode Kit Contents Singlemode 1310 nm Fabry Perot Laser Test Adapter e Singlemode 1550 nm Fabry Perot Laser Test Adapter FC Launch Cables 2 Duplex e FC Mating Sleeves 6 e Fiber Cleaning Starter Kit Cleaning Swabs Dry Cleaning Wipes Wet Cleaning Wipes Pouch Figure 1 Basic Singlemode Kit w Fiber Cleaning Starter Kit FIBERTEK Reference Guide Multimode Kit Contents Multimode 850 nm VCSEL Test Adapter Multimode 1300 nm Fabry Perot Laser Test Adapter ST Launch Cables 2 x 50 um Duplex Zip ST Mating Sleeves 6 Fiber Cleaning Starter Kit Cleaning Swabs Dry Cleaning Wipes Wet Cleaning Wipes Pouch Figure 2 Basic Multimode Kit w Fiber Cleaning Starter Kit ST is a trademark of AT amp T FIBERTEK Reference Guide FIBERTEK Premium Kit Singlemode Kit Contents This kit includes the Basic Singlemode kit plus the following components TRACETEK 1310 Singlemode Adapter Simplex FC FC Cable Fiber Cleaning Starter Kit Cleaning Swabs Dry Cleaning Wipes Wet Cleaning Wipes Pouch Figure 3 Premium Singlemode Kit w Fiber Cleaning Starter Kit FIBERTEK Reference Guide Multimode Kit Contents This kit includes the Basic Mul
51. wer Output MM Source Type SM Power Output SM Source Type 1300 1310nm INGaAs 40dB 800 meters 850 meters 4 000 meters 3 1 meter 2 meters High Resolution Mode 8 meters Medium and Low Resolution Modes 0 01 meters 50mW 16 5dBm MAX 1300nm Fabry Perot Laser 50mW 16 5dBm MAX 1310nm Fabry Perot Laser Note Specifications are subject to change FIBERTEK Reference Guide Fiber Autotest Settings The FIBERTEK kit supports a wide range of networking cable and connector certifications Prior to testing it is important that your fiber autotest settings match your certification requirements Setting Autotest Preferences Autotest 1s the most frequently used test mode A number of preferences can be selected for the Autotest function e Autosave Pass Fail Icon e Disable Fiber Autotest Length 1 From the Display Handset Tools screen select Preferences li 2 Select Autotest Preferences 3 From the open Autotest Preferences screen set the preferences as required refer to LANTEK 6 7 User s Guide Chapter 3 Set Autotest Preferences 13 46 42 24 83 85H 13BHnn Fiber Mi IDERL Autotest Pref Contrast Timeout Options Heasurenent Units PC Printer IF Talkset Date and Tine Language Restore Defaults FIBERTEK Reference Guide Specifying a Module Fiber Type The LANTEK must be configured by selecting the fiber test mode that corresponds to the FIBERTEK
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