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FSU975 Manual - Equipland Inc.

1. A proportionalizing factor that is used to optimize estimation of loss due to macrobending Low limit for RTC current High limit for RTC current The total number of splices made by the splicer UNEDITABLE Splice counter Resets splice counter to 0 Should be done every time you replace the electrodes Time of inaction before splicer turns off automatically Number of splices before splicer warns you that it is time to replace the electrodes You can disable the function by which the splicer turns off automatically by setting to NO The current year The current month The current day The current hour The current minute Range 0 2 0 0 49 9 dB 0 0 9 9 0 29 9 mA 0 29 9 mA 0 x 0 x YES NO 0 0 4 9 MN 00 99 HS HS hundred splices YES NO 00 99 00 12 00 31 00 24 00 59 Default 2 2 0 dB 0 3 14 5 mA 15 5 mA 1 0 MN 20 HS 2000 splices YES 1 set in factory set in factory set in factory set in factory set in factory ADVANCED OPERATION Special functions Global parameters 53 DISPLAY GAP ANGLE parameter GG NORMAL SM SM P01 If you set the parameter DISPLAY GAP ANGLE to YES the ALIGNING FIBERS k 7 splicer will stop during fine alignment and show you the gap angles cleave angles and view angles angular deviation of fibers in camera s viewing plane see also figure below T L VIEW ANGLE x xx If you follow
2. T E fa D 3 O Z 10 MA 12 mA 14 MA 16 mA Adjusted currents to compensate for altitude above sea level If you are using the ALTITUDE parameter you can view the L G FSU 975 AUTO MODE adjusted currents by pressing ESC before splicing PRESS FUSE BUTTON 5 5 The information will be displayed in the mode field accord ing to the following abbreviations CUO PREFUSE CURRENT P Current without compensation View adjusted PREFUSE CUT FUSION CURRENT 1 F Current with compensation k G l CU2 FUSION CURRENT 2 CUO P 10 0 F 11 2 CU3 FUSION CURRENT 3 SERAEMMUDE 00 L And in the message field you will see the current setting for 4 the ALTITUDE parameter E View adjusted FUSION In this example the ALTITUDE is set for 1 km above sea CURRENT 1 level the adjusted prefusion current is 11 2 mA and the k G CU1 P 10 4 F 11 7 adjusted fusion current 1 is 11 7 mA SET ALTITUDE 1 00 KM 5 5 To switch from one current to the next you successively press ESC So to get from the information for FUSION CUR RENT 1 to FUSION CURRENT 2 press ESC and from FU View adjusted FUSION SION CURRENT 2 to 3 you press ESC again CURRENT 2 When you are done viewing the adjusted currents you can press FUSE and continue with the splicing sequence Return to splicing ADVANCED OPERATION Special functions Global parameters SO Service functions button If you press the button while in splicing mode you gain
3. LI The end faces are well cleaved The correct cleaving lengths have been achieved BASIC OPERATION Fiber preparation 11 Splicer preparation D Turn on the splicer Turn on the splicer by pressing the ON OFF button in the upper left hand corner Remember that the splicer will turn off automatically when you open the safety shield after splic ing L G FSU 975 AUTO MODE The splicer al tarts in Aut thus will e splicer always starts in Automode and thus will read PARAMETER UPDATING FSU 975 AUTO MODE in the mode field In the message field you will get a message telling you that it is calibrating INSERT FIBERS parameters Once calibration is completed the splicer will tell you to INSERT FIBERS and to CLOSE SAFETY CLOSE SAFETY SHIELD s 5 SHIELD Insert fibers Place the fibers into the V grooves until they are visible in the monitor and then close the clamps Make sure to avoid sliding the fibers along the V grooves but rather position them over the V grooves and then tilt them down into place see picture below Proper and not so proper insertion of the fibers 12 BASIC OPERATION Splicer preparation Close the safety shield Once you have placed the fibers so that you see them in the monitor and closed the fiber clamps you must also close the safety shield by sliding it smoothly into place At this point the messages CLOSE SAFETY SHIELD and k k INSERT
4. gram In our example TITAN SM SM and in the mes NEW PROGRAM 5 5 sage field the splicer will ask if you want to change the pro gram again If you are satisfied with the splicing program displayed press No Confirm program choice F The splicer will then ask whether you want to edit param a 6 TITAN SM SM PO03 eters Splicing program editing is a function taken up in the EDIT PARAMETERS section on Advanced Operation see p 40 but you should J J keep in mind that it is not possible to edit the parameters in Programs 01 10 the ones we are using here as examples So to end splicing program selection and return to splicing mode you should press again The splicer will then update the parameters in memory so Confirm parameters they match those of the splicing program you have chosen a 6 UPDATING PARAMETERS and return to splicing mode see definition following page 9 9 BASIC OPERATION Splicing mode and program selection 15 Splicing programs 01 10 Program Name NORMAL SM SM DSF SM SM TITAN SM SM NORMAL MM MM ECCENTRIC SM SM ERBIUM SM MCVD ERBIUM DSF OVD SM ATTENUATOR SM FIBER LENS SM 80 UM MICRON Prog No 01 02 03 04 05 06 07 08 09 10 Fiber type Standard single fiber Depressed cladding fiber Titanium fiber Mulitmode fiber Standard single fiber with eccentric core Erbium fiber with single fiber Erbium fiber with dispersion shifted fiber Standard s
5. access to yet another group of operations and parameters The following section outlines them in the order they come up k HHH during editing However if you want a more precise overview fr Hf of the organization of these parameters see the flow chart in I Appendix C Current test for hot core alignment CURRENT TEST If you have chosen a program with hot core alignment as its process the first question that will come up when you press the button is whether you want to run the current test The current test is used to set the RTC CURRENT parameter which is described on page 29 The following outlines the procedure you must follow if you want to run the current test and store the resulting value in a hot core alignment program 1 Choose a program that uses the hot core alignment pro ECCENTRIC TEST cess Note that though you can run the current test with the TAa Ja pre defined program 05 the resulting value can not be stored ig eee i in it so it is best to copy it to another slot by following the Example of a program with hot core alignment instructions on page 42 Rave boon copied rom POE hea ren set and the program renamed 2 Press the button To access current test 3 Press the button to say you want to run the current GG CURRENT TEST test You will subsequently have to answer No three times in k k order to reject the other operations available via the butto namely Clean electrodes Splicelist han
6. measure touch point main fusion pre fusion pre heat before fiber touch rough align make agap to remove hysteresis A typical splicing sequence for the mode field matching process LEFT FIBER INDE WAATAT LIS E A graph from a Threshold type test see e j p 31 plotting of the index profiles for two EDF C 75 0 D 0 27 fibers Note how the profiles converge Mode field matching control parameters INDEX LIMIT represents the lowest value the hot fiber index will be allowed to reach before the arc will shut off thus ending the splicing sequence We recommend that the first time you splice a new fiber combination that you run the Threshold type test see next page THRESHOLD TYPE LOSS FACTOR represents the type of com is a compensatory variable parison that should be made used in splice loss estimation between the hot fiber index to account for the difference profiles for the two fibers between INDEX LIMIT the The easiest way to set the value entered in the param Threshold type is by running eter and the measured index the Threshold type test see after splicing next page 30 ADVANCED OPERATION Splicing program structure Splicing process Threshold type test When you are presented with a new fiber combination it is highly advisable to run the Threshold type test You do so by setting the parameter THRESHOLD TYPE to Threshold type test See page 40 for instructions as to how you edit param eters
7. 0s FUSION CURRENT 3 16 0 mA LEFT MFD 9 8 um RIGHT MFD 9 8 um SET CENTER POSITION 255 AOA CURRENT 0 0 mA EARLY PREFUSION NO ALIGN ACCURACY 0 10 um Ne Program 08 SM ATTENUATOR Standard single fiber Attenuator making DESIRED ATTENUAT 15 dB OFFSET ADJUSTMENT 0 0 um ECF FACTOR 1 3 PREFUSE TIME 0 3s PREFUSE CURRENT 10 0 mA GAP 50 0 um OVERLAP 4 0 um FUSION TIME 1 0 3s FUSION CURRENT 1 10 0 mA FUSION TIME 2 0 6 s FUSION CURRENT 2 12 0 mA FUSION TIME 3 0 3s FUSION CURRENT 3 9 0 mA LEFT MFD 9 8 um RIGHT MFD 9 8 um SET CENTER POSITION 255 AOA CURRENT 6 5 mA EARLY PREFUSION NO ALIGN ACCURACY 0 10 um Program 06 ERBIUM SM MCVD Erbium fiber with single fiber Mode field matching INDEX LIMIT 0 4 THRESHOLD TYPE Difference LOSS FACTOR 0 35 PREFUSE TIME 0 3 s PREFUSE CURRENT 10 0 mA GAP 50 0 um OVERLAP 8 0 um FUSION TIME 1 0 3 s FUSION CURRENT1 10 5 mA FUSION TIME 2 2 0s FUSION CURRENT 2 15 5 mA FUSION TIME 3 0 5 s FUSION CURRENT 3 12 0 mA LEFT MFD 7 5 um RIGHT MFD 8 5 um SET CENTER POSITION 255 AOA CURRENT EARLY PREFUSION ALIGN ACCURACY C N Program 09 SM FIBER LENS Standard single fiber Pulling or tapering PULL 1 YES PULL 2 YES PULL 3 YES PREFUSE TIME 0 3 s PREFUSE CURRENT 10 0 mA GAP 0 0 um OVERLAP 0 0 um FUSION TIME 1 9 0 s FUSION CURRENT 1 15 0 mA FUSION TIME 2 7 0s FUSION CURRENT 2 12 0 mA FUSION TIME 3 2 0s FUSION CURRENT3 7 0mA LEFT MFD 9 8 um RIGHT MFD 9 8 um SET CEN
8. 2 is too high or the fusion time 2 too long to allow RTC control Fusion current 3 is too high to allow RTC control Fusion current 3 is too low to achieve the target offset The ECF factor is too small to allow RTC control Suggested corrective measures Press the ESC button twice to find out what is wrong with the RTC procedure Reduce FUSION CURR 2 by at least 1 0 mA Reduce FUSION CURR 3 by at least 1 0 mA Increase FUSION CURR 3 by at least 1 0 mA Increase ECF FACTOR by 0 2 There are also a set of possible problems in the operation of the splicer that you may observe visually The following table outlines them as well as their possible causes and suggested solutions Problem Arc unstable splutters or yellow in color Fibers bend out of alignment One fiber out of focus Fibers twist up or down when inserted in clamps Splicer turns off or resets unexpectedly Fibers in hot images too close Image in monitor dim or dirty White vertical line at splice point see also p 22 for other splice problems 70 Appendix A Troubleshooting Possible causes 1 Electrodes dirty 2 Fibers dirty Fusion current too low 1 Fiber out of alignment in other view 2 Dirt on primary coating V grooves and or fiber Dirt on primary coating V grooves and or fiber 1 Battery run down 2 Power supply faulty 3 Main power unstable 1 Dirt on primary coating V grooves and or fibe
9. BASIC OPERATION Splicing mode and program selection Splicing process Normal splicing Normal splicing Normal splicing Normal splicing Hot core alignment Mode field matching Mode field matching Attenuator making Pulling or tapering Normal splicing STANDARD FIBER NORMAL SPLICING PREFUS TIME PREFUSE CURR GAP OVERLAP FUSION TIME 1 FUSION CURR 1 FUSION TIME 2 FUSION CURR 2 FUSION TIME 3 FUSION CURR 3 LEFT MFD NORMAL SM SM NEW PROGRAM Screen viewer with parameters for Program 01 Automode splicing Ge Splicer ready At this point you should have chosen Automode for the splicing mode see p 14 and a splicing program Continu ing with the example taken up in the section on splicing FSU 975 AUTO MODE program selection we will assume you have chosen Program TITAN SM SM P03 03 This will give you the adjacent screen with FSU 975 AUTO MODE in the mode field and the program name and program number in the message field Once the fibers are in place and the safety shield has been k 6 auto ALIGNING FUSION closed the splicer will then display a series of messages in the message field that tell you that it is ready PRESS FUSE BUTTON 3 Start splicing To start the automatic splicing sequence press FUSE The splicer will then automatically rough align the fibers prefuse Start automatic splicing focus the view fine align the fibers and finally fuse them l 7 L Krma SM SM P03 During th
10. New Dehli 110 066 tel 91 11 6180808 Indonesia Ericsson Indonesia P T Wasma Pondok Indah 10 FI JL Sultan Iskandar Muda V TA Jakarta 12310 tel 62 21 7693555 Italy Advance ltalia Srl Via F lli Cernuschi 22 I 22055 Merate LC tel 39 039 990 7612 Japan Seiko Instruments Inc 8 Nakase 1 chome Mihama ku Chiba shi Chiba 261 8507 tel 81 043 211 1337 Malaysia Communication Techn Sdn Bhd No 6 Lot 291 Jalan TP5 Taman Perindustrian UEP 47600 Petaling Jaya Selangor Darul Ehsan tel 6 037 047 888 Mexico Amherst Fiber Optics Brentwood Commons Two Suite 205 750 Old Hickory Blvd Brentwood TN 37027 USA tel 1 615 376 4396 The Netherlands Rexcom Holland B V Patroonstraat 11 NL 3860 BC Nijerk tel 31 33 246 12 44 Norway FOSS AS Kobbervikdalen 93B Postboks 3614 N 3007 Drammen tel 47 32 21 08 15 Philippines Ericsson Telecomm Inc 7 Floor Octagon Bldg San Miguel Avenue Ortigas Center PO Box 136 43 Pasig City 1600 tel 63 2 6371600 Poland P U H Interlab s c ul Potocka 14 Pawilon 3 PL 01 641 Warsaw tel 48 22 8333956 Singapore Tele Dynamics Pte Ltd BLK 9010 Tampines St 93 03 107 Singapore 52 884 tel 6 578 628 888 South Africa Lambda Test Equipment c c PO Box 113 Pespsequor Technopark Pretoria 0020 tel 27 12 3491341 South Korea ATC Electronics 99 1 Nackwon Dong Chongro Gu Seoul tel 82 27651177 Sweden Interscandinavia Tel
11. TIME 3 10 sec PULL 3 Yes Hour glass form at the end of the first pulling step using Program 09 Example of micro lenses formed using Program 09 Example of fiber probes for a microscope ADVANCED OPERATION Splicing program structure Splicing process 33 D Program parameters The program parameters are the variables used by each AL SPLICING splicing program to guide the splicing sequence The FSU 975 distinguishes three sets of program parameters the general parameters the control parameters and the splicing parameters The following tables will list all of these param eters along with their ranges of possible values and default values General parameters The general parameters hold information that concerns the overall structure of the splicing program Parameter Function Range Default PROGRAM NAME Max 16 character name All characters empty except KEY NUMBER Max 3 digit security code 000 999 000 SECURITY TYPE 0 Open available to all 0 2 Open 0 1 Read only 2 Confidential FIBER TYPE Specifies fiber type 0 5 Standard fiber 0 Standard fiber 0 1 Titanium fiber 2 Depress clad fiber 3 Erbium doped fiber 4 Invisible core fiber 5 Multimode fiber PROCESS TYPE Specifies splicing process 0 4 Normal splicing 0 Normal splicing 0 1 Hot core alignment 2 Mode field matching 3 Attenuator making 4 Pulling or tapering 34 ADVANCED OPERATION Splicing program str
12. a chance to go back however and make adjustments you might have missed the first time round dod t vi If you are not sure about whether you are satisfied with the erence current version of the program you should press VIEW and bring up the screen viewer The screen viewer will give you a list of all parameters control and splicing and their values No If you are satisifed with the program press and end the editing session The splicer will tell you it is Updating pa rameters and then return to splicing mode End editing session If you press Yes you will return to step 5 p 43 UPDATING PARAMETERS Once you have gone through the program editing se quence once or twice you will probably no longer need Change security code the step by step guide presented on these pages Never theless you may still want some reference for locating specific parameters and keeping tabs on where you are in the overall editing tree If this is the case you can look at the program editing flow chart in Appendix C pp 74 5 ADVANCED OPERATION Program editing 49 Parameter editing review When considered step by step parameter editing can seem interminable however there is a basic logic that guides the editing procedure Once you have become familiar with this logic parameter editing will go easily and quickly The programming buttons O The ENTER button has two functions 1 To initialize th
13. as well as setting up the test configuration shown below During the Threshold type test you will get an index profile of the two fibers based on how they behave during heating See picture on previous page The result of the test will be a value for the Index limit as well as the information necessary to choose a Threshold type While the test is running it is recommended to do a splice loss measurement as well which you do by pressing the button when the loss is ata minimum You can save up to three data points eg press the button three times for the splice loss measure ment and the final value will be their average 3 gt 1 m Erbium fiber 20 m Single fiber or Dispersion shifted fiber 1 Light source 2 Lightwave isolator 3 3 spools with a diameter of approximately 5 8 cm for mode filtering 4 Splicer FSU 975 5 Detector Set up for the threshold type test Threshold types DIFFERENCE When the difference between the two index profiles decreases during splicing it is possible to determine the optimal match by just measuring the difference between the two index profiles stopping the splicing sequence when the difference is at a minimum LEFT INDEX and When the difference between the two index profiles does not RIGHT INDEX become smaller during splicing it is necessary to measure the absolute indexes of the fibers rather than their difference You should
14. associated with normal splic pre fusion ing rough align fiber distance pre heat before fiber touch make a gap to remove hysteresis A typical splicing sequence for the normal splicing process 28 ADVANCED OPERATION Splicing program structure Splicing process Hot core alignment Pre defined program 05 Hot core alignment is de signed for single fibers with a core to cladding eccentricity greater than 0 6 um To be able to line up and splice fibers who are not susceptible to the normal splicing method of lining up the claddings with the assumption that the cores will thereby also be aligned the FSU 975 makes use of hot pre heat fiber current 2 RTC cur current 1 pre fuse gap pre fusion rough align mene AR take warm images current distance to find core offset take 3 warm images compute core offset stop fusion if offset lt ACCEPTABLE OFFSET repeat if offset big pre heat before fiber touch make a gap to remove hysteresis images and real time control RTC The FSU 975 employs hot image analysis and RTC in the hot core alignment process to overcome the two main difficulties associated with highly eccentric cores The first difficulty is that the splicer must locate the cores and align them prop erly The second difficulty is that alignment of the eccentric cores inevitably means that the claddings will not line up This would not be such a problem in and of itself if it were not for
15. changing the etter O e curren the name it should be no cursor position forward Down more than 16 characters or backward through the long and sufficiently specific alphabet that you will recognize it quickly and easily When you have successfully typed in the new program name you press ENTER to save it Enter program name 44 ADVANCED OPERATION Program editing EA Change fiber type and splicing process At this point the splicer will ask if you want to change fiber type and or splicing process If you have copied over a source program step 4 for which you only want to modify a few parameters you may be able to skip this step However this is also a chance to verify that the right fiber type and splicing process are specified To see these parameters you can press VIEW and bring up the screen viewer The fiber type and splicing process will be highlighted If you wish to change fiber type and or splicing process press If you do not press No and go on to Step 8 A The splicer will start with fiber type and ask you whether you want to change it by displaying Change fiber type in the message field If you are interested in changing the fiber type press If you are only interested in changing the splicing process press No and continue reading at B on page 46 The splicer will then present you the options for fiber type in the same format as it did with security types Each fiber type w
16. electrode cleaning program This cleaning procedure should be a more seldom activity averag ing around every 200th splice If a sizzling sound persists even after cleaning the electrodes with the brush and the electrode cleaning program you probably have to replace them which is explained susequently Keep in mind that the electrode tips are very fragile and thus you should never clean them with a hard object and you should even keep to a minimum the frequency with which you clean them with the electrode brush Changing Under normal splicing conditions the electrodes must be replaced around every 2000th splice However if you are using certain types of fiber such as carbon coated fiber you will have to replace them more often As discussed on page 53 the FSU 975 has a built in splice fi k ELECTRODE WEAR counter When this counter reaches the value indicated in the global parameter ELECTROD WARNING the splicer will display the warning CHECK ELECTRODE WEAR This is your signal that you should probably change the electrodes using the procedure outlined on the next page Don t forget that after you have changed them you must also run the electrode cleaning program several times and reset the splicing counter to find it see flow chart p 73 64 Maintenance Electrodes Accessing electrodes Upper electrode steps 1 4 Loosen the screw that holds in place the the outer cover of the electrode block Rem
17. for the attenuator making process Attenuator making control parameters DESIRED ATTENUAT OFFSET ADJUSTMENT ECF FACTOR is measured in dB and is the means by which you when set at a value between quantifies the desired attenu can adjust the target offset 1 and 10 compensates for ation the degree to which the intended offset after the The surface tension men you want to reduce signal splicing sequence The tioned in relation to hot core strength If you select a value you enter here will be alignment p 29 that bends value greater than 0 dB as added to the target offset the cores out of alignment well as give the mode field calculated by the splicer To If on the other hand it is set diameters for each of the make the value negative you to 0 RTC is disabled and if fibers in the parameters LEFT should use the button set above 10 it determines MFD and RIGHT MFD the the limit to the number of splicer will automatically set RTC cycles see below the a target offset for the desired splicer will carry out before attenuation ending the splicing sequence automatically see above diagram RTC cycles A RTC cycle is the time it takes the FSU 975 to take a hot image and analyze it It is essential to all of the processes which make use of RTC control hot core alignment mode field matching and attenuator making Though you can DING OFFSET only explicitly give a value for the desired number of cycles during attenuator making th
18. have a set of codes for different splicing sites LIST CODE 2 is the second of the two user definable data a G LIST CODE 2 00 tags Remember that the coding system is your own and you can return to this parameter during data collection and L change its value ADVANCED OPERATION Special functions Service functions 57 2 Collect data The next step is to collect the splicing data that will form the content of your splice list If you have chosen to make use of the operator number and list codes be sure to be consistent and change their values throughout the data collection stage Collect splicing data You can collect data for up to 50 60 splices and it need not be all in one splicing session or on one day However long it takes though you must turn off and on again the splicer before printing the data out ROGET Splicer If at some point you make a splice you are not happy with you can delete it by following the steps listed below for print C ing out a splic list but answering No when asked whether SKIP LAST SPLICE 5 k you want to print out the list The splicer will then ask if you want to SKIP LAST SPLICE To do so press Yes 3 Print out splice list You can connect a printer to the splicer via the RS 232 con PRINT SPLICELIST 99 nector see technical data p 70 and the splicer will send the data to it in the form of a spreadsheet The command that effectuates this process is PRINT SPLICELIST butt
19. lined up gap between their end faces is centerd on the monitor and as small as possible while still allowing for up and down movement of the fibers and as narrow as possible Gap c ntered O Fuse When the fibers are aligned to your satisfaction you can press the FUSE button and start fusion The splicer will Fuse fibers follow the splicing program you chose earlier in our case program 03 k k SPLICING As the FSU 975 splices your fibers it will read Splicing in J J the message field Check the splice Once the splicing sequence is complete you need to check the splice The steps for this procedure are outlined in the following section 20 BASIC OPERATION Manual mode splicing Splice evaluation ED Loss estimation cC FSU 975 AUTO MODE After the splicing sequence is complete the splicer automati ET SPLICE cally estimates the splice loss and displays it in the mode field k ESTIM LOSS x xx dB NEXT PICTURE VIEW 9 5 2 Re fuse Optional step f ESTIM LOSS x xx dB This option is not available if you are using the hot core FOR REFUSING alignment process Program 05 in the case of the pre de fined programs PRESS FUSE BUTTON 55 With all other splicing processes if you judge that the splice loss is too high you can try to lower it by re fusing The splicer will present this option to you in the mode field and you effectuate it by pressing FUSE again BESS fibers optional Do
20. mA 10 5 mA the fiber ends touch During Hot core alignment it is the initial RTC current FUSION TIME 2 Fusion time after 0 0 99 9 sec 2 0 sec the fiber ends touch During Mode field matching and Attenuator making it also represents the waiting time before the RTC procedure begins FUSION CURRENT 2 Fusion current used from 0 0 29 9 mA 15 0 mA the point the ends touch During Hot core alignment if it is set to 0 the auto current will be used FUSION TIME 3 Relaxation time 0 0 99 9 sec 2 0 sec During Hot core alignment it is used only if the core eccentricity is small FUSION CURRENT 3 Relaxation current 0 0 29 9 mA 12 5 mA During Hot core alignment it is used only if the core eccentricity is small Continued on the following page As the fiber moving speed GAP FUSION CURRENT 1 do not set FUSION CURRENT 1 to 0 0 36 ADVANCED OPERATION Splicing program structure Parameters Parameter LEFT MED RIGHT MED SET CENTER POSITION AOA CURRENT EARLY PREFUSION ALIGN ACCURACY Function Mode field diameter for left fiber Mode field diameter for right fiber Sets normal splicing or off center splicing Arc on alignment current Disable by setting to 0 Do prefusion before any alignment Accuracy for axis alignment Range 2 0 19 9 um 2 0 19 9 um 200 319 6 0 29 9 mA YES NO 0 01 9 99 um Default 9 8 um 9 8 um 255 NO 0 0 15 um The splicing parameters list
21. measure the fiber who has the least variation in its index profile If the left fiber s index varies least choose LEFT INDEX If the right fiber s index varies least choose RIGHT INDEX HIGHER INDEX When one fiber always has a higher index profile than the other or when the profiles cross frequently during heating it is best to measure the higher absolute index HIGHER START It is also possible to choose to measure the absolute index of the fiber that has the higher index in the first cycle of measurement ADVANCED OPERATION Splicing program structure Splicing process 31 Attenuator making Pre defin rogram 08 l take a warm image and Seer current fiber distance compute the cladding offset Attenuator making is the sens repeat if cladding offset is process you use when you E bigger than target offset want to reduce the strength of current 3 a signal because of a short rene eee z current 1 distance between a transmit ter and receiver for example This signal strength reduction is achieved by splicing fibers with a cladding offset and take 1 warm image thus a core offset that gives pre heat before turn off arc if cladding the desired attenuation The fiber touch offset lt or target offset FSU 975 makes use of the i RR B same RTC control that we ars RS ao 9 have seen with other splicing processes to measure and set the offset overlap A typical splicing sequence
22. not re fuse more than once because multiple re fusion can result in reduced splice strength and or increased splice attenuation Evaluate splice visually You should also visually evaluate the splice The sequence of images available includes the two live images one from each angle and two stored hot images that are photos taken ESTIM LOSS x xx dB during splicing You can scroll through all of them by repeat NEXT PICTURE VIEW edly pressing VIEW Example of a live image Image evaluation shows you the result of the splicing proce dure as well as what happened during the splicing process and is a particularly rich source of information for trouble shooting On the next page there are some tips as to what you should look for To scroll through images The FSU 975 also offers more advanced functionality in relation to hot image analysis and if you are interested in using it you should read page 59 in Advanced Operation lt gt ESTIM LOSS x xx dB Example of a hot image BASIC OPERATION Splice evaluation 21 Live image and basic hot image analysis The best thing to have in your mind as you look at the images after splicing is a representation of a successful splice such as the one here The thing to note in particular is that the E I E core and the outer edges form straight lines If your splice does not look like this you should check for one of the com Example of a successful splice m
23. of monitor For example to get the number 147 you would press the first button once the second button 4 times and the third 7 times Monitor The FSU 975 monitor is organized into a viewing area that allows you to see the fibers from two different angles and a text area that is itself divided into two text fields a mode If you press VIEW you then see the Fibers from 1st angle field and a message field The fibers from the 2nd angle eck ge Ga RE Mode field FSU975 AUTO MODE EREET programs y Message field AT working with The message field poses questions gives instructions Moo and tells you what it is doing Description of the FSU 975 7 Setting up the splicer The adjacent set up check list is not in any way exhaus tive but it does present the basics you should have at LI Optical fiber L FSU 975 fusion splicer L Fiber holders Id FSU 975 manual Set up checklist hand before sitting down and splicing L Strippers L V grooves Cleaner L Heat shrink oven L Cleaver C Heat shrinkable sleeves L Cotton swabs L Power supply or battery L Isopropyl alcohol LI Electrode brush V grooves The FSU 975 is delivered with two sets of V grooves blue V grooves and black V grooves Use the blue V grooves when you intend to clamp on bare fiber They are designed for fiber with tight secondary coat ing with a cladding diameter of up to 125 um and secondary coating diameter of up to 1 mm
24. similarities you can specify DEPRESS CLAD FIBER with dispersion shifted fiber however if the splice loss is too high using this fiber type specification you should select INVISIBLE CORE instead 1 OSs 8 Sede Hot image of dispersion shifted fibers Silica core fiber INVISIBLE CORE FIB Pre defined program 02 Silica core has the same difficulty as dispersion shifted fiber namely that the high level of dopants in this case flourine in the cladding can make it nearly impossible to see the core Titanium fiber TITANIUM FIBER Pre defined program 03 Titanium fibers have an outer layer doped with titanium diox ide which has the result of increasing the fiber s resistance to fatigue A splicing difficulty is that this titanium doped layer when heated emits more radiation than the cladding making it hard to see the core in hot images Another peculiarity is GHD i ete Ses wale he i EST IM LOSS 4 8246 that splicing titanium fibers contaminates the electrodes a re more quickly than other splicing combinations To minimize this contamination as well as the risk of matchsticking a phenomenon where the fibers do not fuse but rather melt at their tips forming round balls at their ends a program with a lower current should be used Hot image of titanium fibers ADVANCED OPERATION Splicing program structure Fiber type 21 Splicing process Splicing processes represent a way of dividi
25. the adjacent diagram you see that the splicer R VIEW ANGLE y yy 99 first pauses and shows you the view angle offsets where L VIEW ANGLE is the view angle offset in the lower view and R VIEW ANGLE is the view angle offset in the upper view You then press the button to see the gap angles where Switch to gap angles L GAP ANGLE is the cleave angle of the left fiber and k 6 R GAP ANGLE is the cleave angle of the right fiber L GAP ANGLE x xx R GAP ANGLE yyy Jy L By pressing the button again the splicer resumes the splicing procedure Return to splicing sequence GG FSu 975 AUTO MODE ALIGNING FIBERS 55 Definitions of angles lof are Counter clockwise angles eg Gu and B measured as positive I right and B are mea Clockwise angles eg a sured as negative Bright right right 54 ADVANCED OPERATION Special functions Global parameters ALTITUDE parameter When working at altitudes significantly higher or lower than sea level it is important to adjust the electrode cur rents to compensate for the decreased or increased air density If you fill in the ALTITUDE parameter with your working altitude in kilometers the FSU 975 will automatically recalibrate the prefusion current and the three fusion currents to your actual work conditions The ee ed adjacent graph shows such 2000 4000 6000 8000 10000 an adjustment for original Altitude m currents of 10 12 14 and 16 mA
26. the fact that the misalignment of the claddings leads to surface tension during fusion that bends the fibers and pulls the cores back out of alignment see adjacent image Hot core alignment control parameters MAX ECCENTRICITY ACCEPTABLE OFFSET is used to decide whether regulates whether a RTC the fibers should be spliced sequence with its at all To determine whether compensentory elements or the maximum allowable a normal splicing sequence eccentricity has been will be used to splice the exceded the splicer takes fibers It can be that the hot images before splicing If offset measured in the first this reading is above the part of the process is so value of the parameter you small ie is acceptable that will receive a warning in the it is just as well to line up the monitor and the splicing Claddings and splice nor sequence will stop mally FUSION CURRENT 2 is not specifically a hot core align ment paramenter but you should take note that if you choose a value of 0 0 mA the current test sets this param eter automatically the same time it determines the RTC CURRENT Otherwise you will have to set it manually A typical splicing sequence for the hot core alignment process The problem of splicing without RTC control Before splicing cores closely aligned cladding un aligned After splicing cores bent out of alignment Bending of fiber cores in fibers spliced without RTC RTC CURRENT is the current a
27. to be the only single fiber splicer you ll ever need It handles all basic single fiber splicing procedures as well as more complex tasks such as tapering attenuator making and erbium splicing At the heart of the splicer s operations is the hot core alignment process which individualizes the splicing procedure to fit your fiber type and climactic conditions in order to offer the lowest possible splice loss every time Then just to make sure the FSU 975 estimates this splice loss with an extremely accurate splice loss estimation technique based on mode coupling theory micro bending and hot image processing There are two ways of categorizing the FSU 975 s operations and this manual will be organized according to both them On the one hand the FSU 975 splicing programs can be divided into two groups Programs 01 10 which are the ten splicing programs that come pre defined with the machine and Programs 11 50 which are the forty editable slots you have for designing your own splicing programs to suit your special needs In this manual the instructions you will need to run the pre defined programs 01 10 will be the focus of the section on Basic Operation After you are familiar with the FSU basics you can go on to the second section Ad vanced Operation which outlines the structure of splicing programs in greater detail and describes the method for designing your own On the other hand FSU 975 splicin
28. um OVERLAP FUSION TIME 1 0 35 FUSION TIME 1 0 2 s FUSION TIME 1 FUSION CURRENT 1 10 5 mA FUSION CURRENT 1 10 5 mA FUSION CURRENT 1 FUSION TIME 2 2 0s FUSION TIME 2 20s FUSION TIME 2 FUSION CURRENT 2 16 3 mA FUSION CURRENT 2 15 0 mA FUSION CURRENT 2 FUSION TIME 3 2 0s FUSION TIME 3 20s FUSION TIME 3 FUSION CURRENT 3 12 5 mA FUSION CURRENT 3 12 5 mA FUSION CURRENT 3 LEFT MFD 9 8 um LEFT MFD 9 8 um LEFT MFD RIGHT MFD 9 8 um RIGHT MFD 9 8 um RIGHT MFD SET CENTER POSITION 255 SET CENTER POSITION 255 SET CENTER POSITION 255 AOA CURRENT 0 0 mA AOA CURRENT 0 0 mA AOA CURRENT EARLY PREFUSION NO EARLY PREFUSION NO EARLY PREFUSION ALIGN ACCURACY 0 15 um ALIGN ACCURACY 0 15 um ALIGN ACCURACY N Program 04 NORMAL MM MM FUSION TIME 2 2 0s Multimode fiber FUSION CURRENT 2 15 5 mA Normal splicing FUSION TIME 3 1 0s FUSION CURRENT3 12 5 mA PREFUSE TIME 0 3s LEFT MFD 9 8 um PREFUSE CURRENT 11 5mA RIGHT MFD 9 8 um GAP 50 0 um SET CENTER POSITION 255 OVERLAP 12 0 um AOA CURRENT 0 0 mA FUSION TIME 1 0 3s EARLY PREFUSION NO FUSION CURRENT 1 12 0 mA ALIGN ACCURACY 0 25 um 38 ADVANCED OPERATION Programs 01 10 Program 05 ECCENTRIC SM SM Single fiber with eccentric core Hot core alignment MAX ECCENTRICITY 1 0 um RTC CURRENT 12 5mA ACCEPTABLE OFFSET 0 3 um PREFUSE TIME 0 3s PREFUSE CURRENT 10 0 mA GAP 50 0 um OVERLAP 8 0 um FUSION TIME 1 0 2s FUSION CURRENT 1 10 5 mA FUSION TIME 2 0 3s FUSION CURRENT2 0 0mA FUSION TIME 3 3
29. A Troubleshooting Possible causes 1 The battery needs charging 2 The power supply is faulty 3 The splicer is measuring the battery charge incorrectly The number of splices indicated in the global parameter Electrode warning have been executed 1 The fibers are not in the cameras field of vision 2 The fibers are out of focus 3 The optical system is faulty See NO FIBER FOUND See NO FIBER FOUND The splicer can not locate the end faces or the gap between them The splicer cannot locate the end of the left fiber because of dirt or a poor cleaved end faces The splicer cannot locate the end of the right fiber because of dirt or a poor cleaved end faces The cleave angle of the left fiber is too large The cleave angle of the right fiber is too large 1 Monitor out of focus 2 The fibers are dirty 3 Poor end faces The fibers are dirty See DIRTY FIBERS See DIRTY FIBERS 1 Monitor out of focus 2 Internal splicer error Suggested corrective measures 1 Charge the battery 2 Service the power supply 3 Service the splicer Change the electrodes and reset the splice counter to zero 1 Insert the fibers so that they are are clearly visible in the monitor 2 Adjust the focus 3 Service the splicer See NO FIBER FOUND See NO FIBER FOUND Insert the fibers into the clamps again and or adjust the focus Adjust the focus and if the problem persists re prep
30. FIBERS will be replaced with a new series of mes Program name Program sages The first will inform you which splicing program was eg SM SM P01 last used for example SM SM P01 The other mes sages will tell you about coming next stages in the splicing AUTO ALIGNING FUSION process AUTO ALIGNING FUSION and PRESS FUSE PRESS FUSE BUTTON BUTTON But first 27 4 Check the fibers Before you take any more steps toward splicing you should check the fibers in the monitor to make sure they are clean and well cleaved See illustrations below for examples of problems If you see any defects you should take the fibers out and re prepare them Don t forget to check both views Upper view which you can alternatively access by pressing VIEW If you are having difficulty seeing the fibers you should try adjusting the focus by pressing the buttons and Check fibers in other view The following pictures represent fiber preparation defects that necessitate re preparation of the fibers Eee SE y a tC OC E 4 Lower view Dust on fiber Tang Large cleave angle BASIC OPERATION Splicer preparation 13 Splicing mode and program selection Though the splicer is saying in the message field to PRESS FUSE BUTTON you should make sure the correct splicing mode and program are selected ED Select splicing mode As mentioned earlier the default splicing mode is Automode and this will be
31. IAL k k question mark If this is not the value you want you press No at which point the second value appears again as a question See example page 43 You continue to press and scroll through the list of possible values until the value you want is shown in the message field At which point you press Yeg and enter the new value for the parameter ADVANCED OPERATION Parameter editing review 51 Special functions O Quick character selection The character selection Button method described for defin ing a program name p 46 is Yes effective but can be a little No slow so it is advantageous 0 9 left to learn the adjacent short 0 9 middle hand Quick character selec 0 9 right tion can not be used in Select isolation since not all charac R ters are available but it can faciliate entering information View into the splicer Esc Do NOT press the buttons Mode ON OFF ENTER or FUSE Hot image when using quick character Gap selection Global parameters Program 00 Corresponding character If you set the program number to 00 follow instructions on page 14 and enter the key num ber 975 you gain access to the global parameters which are the parameters that control the general functioning of the splicer The organization in sub groups is repeated by the order of editing you will find in flow chart form in Appendix C Parameter Function ENGLISH VERSION Mulitple value parameter for the languag
32. In short you scroll through this list with the No button until the security type you want is shown in the message field and then press a Yes Choose security type ADVANCED OPERATION Program editing 43 To orient yourself within the splicing program structure you should take note that the step we just completed was to change two of the general parameters listed on page The general parameters h General parameters 34 KEY NUMBER and SECURITY TYPE The other three general parameters PROGRAM NAME FIBER PROCESS Parameter and FIBER TYPE are changed in the following steps PROGRAM NAME steps 6 and 7 G Name or re name the program bk CHANGE PROGRAM NAME The next step is to name or re name in the case of simple kk editing the splicing program As explained above the pro gram name will be stored with the security code and security type amongst the general program parameters The splicer will ask in the message field Change program name and to do so you press Yes Confirm wish to name Entering text on the FSU 975 The left arrow buttons is controlled by the arrow el rec se dr it cre buttons according to the or backward one letter at a beginning or end of a line adjacent description You time zen Fight can also use a method of O D quick character selection which is described on page aii The up and down arrows 52 to facilitate the process Bee character D i Regardless how you enter peer ton
33. MAL SM SM P01 9 9 Fiber type Because of structural differences different types of fiber behave in dissimilar ways when spliced For example dopants can change the melting temperatures and light emissions of heated glass and fibers are often made with several differently doped layers This variation must be taken into account during the splicing sequence as well as in splice loss estimation so it is important to specify fiber type when designing your own program As an aid the following decriptions of the major fiber types are given with a listing of the programming name for that fiber type as well as the number s of the pre defined splicing program s that can be used as a base for designing your own splicing programs Erbium doped fiber ERBIUM DOPED FIBER Pre defined programs 06 amp 07 Erbium doped fiber is used in amplifiers to increase the inten sity of a light signal within an optical network It achieves this through a combination of erbium dopants and a smaller than average core usually 4 um as opposed to 6 8 um How ever since erbium fiber is usually being spliced to other types of fiber with larger cores special techniques must be applied to make the best match of the dissimilar cores Multimode fiber MULTI MODE FIBER Pre defined program 04 Multimode fiber has a larger core that permits the transmission of several light modes simultaneously and since it does not have any mechanisms for dampening di
34. R The splicer will then display the second parameter PREFUSE CURR and its value which you can also change using the number buttons Save the new value by pressing ENTER Enter value The rest of the parameters will follow this exact same proce dure with the exception of EARLY PREFUSION For an example of how to deal with such binary parameters see the PREFUSE CURR 10 0 MAg k parameter editing summary on page 50 Splicing parameter editing is complete when the value for the last parameter has been entered Type in new value In short l Each of the parameters appears successively in the message field and you first change its value with either the number buttons in the case of quantitative parameters or Yes and No buttons in the case of a binary On Off parameters and gains then press ENTER to save the new value ine other parameters For those of you who skipped over control parameter follow same procedure editing we want to once again point out that the proce dure for editing splicing parameters has a logic that ap plies to all parameter editing So once you are used to the logic for splicing parameter editing you will know how to change any FSU 975 parameter see also p 50 for a re view of this logic Enter final parameter value 48 ADVANCED OPERATION Program editing O Re edit program bk RE EDIT PROGRAM 99 At this point you have finished editing the splicing program The splicer gives you
35. See also p 11 Use the black V grooves when you intend to clamp on primary coating They are designed for fiber with a nominal primary coating of 250 um as well as loose tube secondary coated fibers with a tube diameter of up to 2 mm See also p 11 It is also possible to order specially designed V grooves from Ericsson by contacting your local service representative If you do indeed need to change V grooves or install them for the first time you should follow the instructions on page 63 Power connection The FSU 975 can be operated by either a 12 V DC battery or a power supply unit rated at 50 60 Hz In both cases the power cord is connected into the outlet marked PWR on the rear panel of the splicer see also diagram of rear panel on previous page If you are using the battery delivered by Ericsson keep in mind that the battery is not charged on delivery see p 61 8 Setting up the splicer BASIC OPERATION Quick guide The following steps outline basic operation of the FSU 975 and refer to the pages where they are explained in greater detail Connect the splicer to the power supply 8 Prepare the fibers 2 ccsssssssssssnssesssccennnsssssceeanseses 10 Strip clean and cleave the fibers Turn on the splicer and place the fibers 000 12 Note The splicer will turn off automatically when you re open the safety shield after splicing Choose between the two splicing mode
36. TENUATOR MAKING PULLING OR TAPERING 5 5 Y When the splicing process you want is in the message field you should press Yes Yes To choose splicing process O Edit control parameters 66 For a full list of control parameters see p 35 EDIT CONTROL PARAS 5 5 This step only applies if you are editing a program that uses a splicing process with control parameters eg if the splicing process is NORMAL SPLICING the splicer will not ask you whether you want to edit control parameters In the cases that there are control parameters the splicer will ask you Edit control paras You have the option at this point of a leia pressing the VIEW button and bringing up the screen viewer to see what values the parameters have The screen viewer will come up with the fiber type and splicing process high lighted as in the picture on page 45 Affirm wish to change If you decide that do want to edit the control parameters press If you press No you go on to step 9 cont next page 46 ADVANCED OPERATION Program editing L Cont from preceding page As all splicing processes have different control parameters see pages 28 33 we will take the control parameters for mode field The following example is for a matching as an example The range for possible values for program using mode field matching mode field matching control parameters is listed on p 35 d INDEX LIMIT 0 4 5 5 In the example shown to the right the va
37. TER POSITION 255 AOA CURRENT 0 0 mA EARLY PREFUSION NO ALIGN ACCURACY 0 15 um N A Program 07 ERBIUM DSF OVD Erbium with dispersion shifted Mode field matching INDEX LIMIT 2 6 THRESHOLD TYPE Higher start LOSS FACTOR 0 35 PREFUSE TIME 0 3 s PREFUSE CURRENT 10 0 mA GAP 50 0 um OVERLAP 4 0 um FUSION TIME 1 0 3 s FUSION CURRENT 1 10 5 mA FUSION TIME 2 1 58 FUSION CURRENT2 15 0 mA FUSION TIME 3 0 5 s FUSION CURRENT3 12 0 mA LEFT MFD 7 5 um RIGHT MFD 9 0 um SET CENTER POSITION 255 AOA CURRENT 6 5 mA EARLY PREFUSION YES ALIGN ACCURACY 0 10 um Program 10 SM 80 UM MICRON Standard single fiber Normal splicing PREFUSE TIME 0 2 s PREFUSE CURRENT 8 0 mA GAP 40 0 um OVERLAP 4 0 um FUSION TIME 1 0 3 s FUSION CURRENT 1 8 5 mA FUSION TIME 2 2 0s FUSION CURRENT 2 12 0 mA FUSION TIME 3 0 0s FUSION CURRENT 3 0 0 mA LEFT MFD 8 5 um RIGHT MFD 8 5 um SET CENTER POSITION 255 AOA CURRENT 0 0 mA EARLY PREFUSION NO ALIGN ACCURACY 0 10 um ADVANCED OPERATION Programs 01 10 39 Program editing Programs 11 50 One of the most important features of Advanced Operation is that you yourself can design your own splicing programs The FSU 975 comes with 40 slots for user defined splicing programs and the following ten steps outline how you can fill them Note that program editing with the FSU 975 is orga nized serially meaning that to reach a later step you must pass through the ones preceeding it eg You can
38. User s manual for the FSU 975 single fiber fusion splicer by Ericsson q Ae ERICSSON 2 Table of contents IMEFOCUIGUON a ETA E TE EE E E EN 4 SASUY INTO A OM asi iina sa ei a sees neues ae adea adada SR ANKARE SHAN AA NR alea 5 Deseription of the FSW OS sacesedisecvssscedeuveacedeuseeetoentdentuanadeunday Zero denezecelenescaatenadetacensdensaeted 6 Seting UP lele TT 8 BASIC OPERATION oisiscenmosancnedcencnet ce haceuauile ea baat ot bs date E oan alates 9 Splicing QUICK GUJE std 510avsndses enendenecececruddeniaensdenedentaep dens tacedeencadelacadeadueptdentensta 9 FIBER sle Tle T 10 Splicet PISMArALlON sieiwecstceeezess sacs tesasaseeanseasscanseanscstacececacenscacecaepesdteoneqenewontaestocs 12 Splicing Mode and program selection cesses eee eee eee 14 AUTOMOCIE SPlICINGO issii an cacedaneadaatupadenaquns densa tentecead 17 Manual mode splicing sese ss ssssssssssssssssssssse ereer ennenen enen 18 eeil SVEIUAVON ccsnserseesecavecesesac sacs devecensceuscensccetietniaseseeciescacecintmatemonemengenutonseaes 21 Splice protection TTT 23 ADVANCED OPERATION a 2656 octene dE dae r aaea aa eai skr metered a snarkande 25 Fusion program StrUCtUTE sssssssss esse essen ennenen nenen 25 COVEIVIBW istered occu nar sasson deen sant at esd e Ea Goat oak eed ers Ren 25 Program MAMI cussqccrdeescenadeuteescacetsnncacetenncdoebupedentouptawnaeusisadanscusecint 26 Sea sL 26 SPLICING PMOCOSS weisseiseacsriesusnerentaansesnedap ci
39. YES 1 a ECF 0 RTC disabled O0 lt ECF lt 1 0 Align offset Computed offset and Target offset ECF x computed offset 1 0 lt ECF lt 10 0 ECF gt 10 Align offset ECF x target offset where Target offset Computed offset Fixed number of RTC cycles where number of cycles ECF 10 Align offset The offset the splicer sets at the beginning of the splicing sequence Computed offset The offset calculated by the splicer based on DESIRED ATTENUAT and RIGHT MFD and LEFT MFD Target offset The intended offset at the end of the splicing sequence ADVANCED OPERATION Splicing program structure Parameters 35 Splicing parameters The splicing parameters are the parameters that control the general operations of the splicing sequence Regardless of splicing process the following parameters are applied to guide the splicer through alignment prefusion and fusion Nevertheless some of these parameters are used slightly differently during particular pro cesses If this is the case the parameter s special use will be inidcated in italics Parameter Function Range Default PREFUSE TIME Time prefusion current runs 0 0 9 9 sec 0 2 sec PREFUSE CURRENT Current during prefusion 0 0 29 9 mA 10 0 mA GAP Gap set right before splicing 0 0 99 9 um 50 0 um OVERLAP Overlap during splicing 0 0 49 9 um 8 0 um FUSION TIME 1 Fusion time before 0 0 99 9 sec 0 3 sec the fiber ends touch FUSION CURRENT 1 Fusion current before 0 0 29 9
40. ar right are two graphs that measure the core i Hot image with graphs diameter as seen from the top and bottom Press VIEW to access the final level of analysis Access last level of hot image analysis The final level of advanced hot image analysis are three dimensional light intensity curves The scale is 20 um be tween ticks along the longitudinal axis of the fiber and 15 um between ticks along the transversal axis of the fiber TST IMAGE QUIT HOT IMAGE ESC 3 D light intensity curves Press ESC when you want to exit from advanced hot image Esc analysis End analysis ADVANCED OPERATION Special functions Advanced hot image analysis 59 E Advanced splicing parameters Mode field diameters LEFT MFD and RIGHT MFD In order to obtain good splice loss estimation it is important Fiber Type to correctly set the mode field diameters for your fibers The Single mode mode field diameters are listed in the specifications for fibers S NA S 7 Q Single mode and the adjacent table gives some representational values Dispersion Nevertheless if possible it is Shifted also a good idea to test your fibers by comparing measured and estimated splice losses over a series of splices Centering in Monitor SET CENTER POSITION Wavelength nm 488 633 850 980 1060 1300 1550 37 43 57 6 6 93 105 33 43 5 3 66 7 8 8 1 The SET CENTER POSITION parameter allows you define what the splicer considers
41. are the left fiber Adjust the focus and if the problem persists re prepare the right fiber Re prepare the left fiber paying special attention to cleaving Re prepare the right fiber paying special attention to cleaving 1 Adjust the focus 2 Re prepare the fibers 3 Re prepare the fibers paying special attention to cleaving Re prepare the fibers paying special attention to properly cleaning them and clean the V grooves See DIRTY FIBERS See DIRTY FIBERS 1 Adjust the focus 2 Service the splicer Continued on the next page gt General fault messages cont Fault message CAN T MAKE SHARP BAD VIEW ANGLE INTERNAL ERROR CANNOT ESTIMATE LOSS BAD SPLICE Possible causes 1 Monitor out of focus 2 Internal splicer error 1 The V grooves are dirty 2 The V grooves are out of alignment Splicer needs service 1 Bad splice picture 2 Wrong parameters used in program 3 If it happens very frequently it means the optical system is faulty Unsuccessful splice Mode field matching fault messages Fault message SELECT NOT PRESSED COMPUTE THRESHOLD NO THRESHOLD FOUND DO SELECT NEXT TIME NO THRESHOLD FOUND TRY REDUCE TIME 2 NO THRESHOLD FOUND TRY INCREASE CURR 2 NO THRESHOLD FOUND TRY REDUCE CURR 2 NO THRESHOLD FOUND TRY NORMAL PROCESS When you have gotten a fault message and made note of what you should do you can then return to the on going Po
42. at procedure for the other V groove Exchanges T V groove numbers l l V groove numbers Every FSU 975 V groove has its own unique number and can be used only with its particular FSU 975 splicer The Lor Right label behind the operator panel see adjacent picture identi S 12345 56789 fies the V grooves that go with that splicer The reason for this specificity lies in the high precision of fabrication di sad 94327 98765 mensions and it means you cannot exchange V grooves between splicers Maintenance Fiber clamps and V grooves 63 Electrodes Cleaning The electrodes can be cleaned in two different ways The first is to run the electrode cleaning program see also p 57 which is accessed as follows button gt Clean electrodes gt YES The electrode cleaning program should be a part of your daily splicing routine and we recommend it as a start up proce dure You should also run it after every 20th splice To access electrode cleaning program While the electrode cleaning program is running you should listen for a sizzling sound If you hear it you should run the program several times until it subsides If the sound does not subside you should switch to the second way of cleaning the electrodes The second way of cleaning the electrodes is to make use of the electrode brush that comes with the splicer see adjacent picture You first brush away excesive deposits with this brush and then run the
43. ating Clean the fiber Clean the bare fibers with a tissue or a pair of cotton swabs soaked in propanol or ethanol It is important that from this point on you are very careful with the fibers to ensure that they do not become dirty again such as laying them down on a dusty working surface or even waving them around in the air It is also a good idea at this stage to check to be sure the V grooves are clean and if not wipe them down as well 10 BASIC OPERATION Fiber preparation 4 Cleave the fiber Before cleaving the fiber make sure the fiber is clean and properly prepared See steps 1 3 Cleave the fibers using a high quality cleaving tool that offers a flat end face at an angle of less than 1 from the perpen dicular To ensure good splicing you must also observe the instructions for cleaving lengths detailed below Cleaving lengths plus V groove selection Tight secondary coating Loose secondary coating gt 12 mm primary coating Primary coating Use Blue V grooves Use Black V grooves Clamping on bare fiber Clamping on primary coating Fiber preparation checklist Fiber preparation is often the decisive phase in successful splicing so it is important to ensure that LI The correct V grooves have been selected you can check off on the adjacent points Fiber preparation checklist LI The fiber clamps and V grooves are clean LI The fibers are completely stripped LI The fibers are clean
44. ave a security J J type other than Open it is necessary to have a code known only by those who need access to the program s parameters Remember that the security code imported from pre defined programs is 00 0 and is printed in the manual Confirm wish to To confirm that you want to change the security code press change security code GG NEW Gong xxx 27 The message field will then open up for you to enter a new code by displaying New code xx x You can then type in your new code using the number buttons As always with security codes it is best to pick something memorable but not too obvious You enter your new security code by pressing ENTER Type in new code Enter new security code B It is now time to change the security type to choose G 6 CHANGE SECURITY TYPE whether the program will be classified as Open Read J J only or Confidential The splicer will ask in the message field Change security type and to do so press If you press No you go to step 6 To change security type The splicer will then present each possibility one by one It will first read Open in the message field and if you do not OPEN want the program to be classified as Open you press No It will then offer Read Only as an alternative and after that READ ONLY Confidential If you press No when it reads Confidential Open will come up again CONFIDENTIAL 5 5
45. block plug i unit for ae sien eee L S uring splicing l Left y NIE standard heat shrink sequence yen Used in fiber p sleeves alignment Left fiber clamp S Fixes fiber into V Right V groove Used in fiber alignment grooves Fiber fixture optional see p 23 Holds fiber secure during removal Monitor and buttons described on next page 6 Description of the FSU 975 Rear panel 6A Fuse 2 Output for video Auxiliary 12V video output see Appendix B 4 2A Fuse 5 12V power input 6 RS 232 see Appendix B FSU 975 ERICSSON amp es C E E On Off To turn splicer on and off Left arrows To move left fiber along its own Esc To abort operations and to access axis e g toward right fiber parameters Right arrows To move right fiber along its own Mode To change splice mode axis e g away from left fiber Hot Image To flip through hot images Yes To answer yes to programming questions Up arrow For axial fiber alignment No To answer no to programming questions Down arrow For axial fiber alignment Enter To enter one s selections 0 9 To choose first numerical place 0 9 To choose second numerical place Gap To set a fine gap or close a gap 0 9 To choose third numerical place Fuse To initiate a splicing procedure Programming buttons Select To check battery and to access service parameters To adjust focus To adjust focus To change contenet
46. cause of the position of the mirrors in the FSU 975 there is a tendency for mirror one to become dirty with build up in the same way the electrodes do This build up manifests itself as a gradual darkening of the image in the lower view as well as in the contraction of the hot image light intensity curves for this same view YOU SHOULD NOT TRY TO CLEAN THE MIRROR YOURSELF but rather should deliver the splicer to anrr arrez X U wer light intensity an authorized Ericsson representative for cleaning curve due to build up on mirror one G Maintenance time table Maintenance should be an important part of your daily routine with the FSU 975 To make it easier for you to keep in mind all of the various maintenance tasks the following time table organizes these tasks according to how often you should do them How often Maintenace tasks Beginning of each day Clean the electrodes using the electrode cleaning program Clean the V grooves with a cotton swab dipped in alcohol Every 20 splices Clean the electrodes using the electrode cleaning program Every 200 splices Clean the electrodes using the electrode brush and then the electrode cleaning program Every 1000 splices Check mirror one for build up Every 2000 splices Replace the electrodes 66 Maintenance Maintenance time table Software package For easier handling the FSU 975 comes with a software package that allows you to control the operations of up to four FSU 975 splic
47. d buttons for both Outer diameter alignment the right and left fibers until the outer edges of the fibers line up When you think the fibers are lined up you can start bringin S the fibers towards each other by alternatively pressing the Cs Gap alignment and buttons for each of the fibers Your goal is a gap equivalent to half a diameter of a fiber centered horizontally in the monitor see illustration below You should then press the VIEW button to ensure that the gap is also correct from the other camera angle Check gap in other view After rough alignment the situation should be as follows the outer edges of the fibers line up and the gap between Outer edges lined up their end faces is the width of half a fiber diameter and centered on the monitor Gap width of half a fiber diameter Gap centered 18 BASIC OPERATION Manual mode splicing Prefuse Once the fibers are rough aligned you press the FUSE but ton During prefusion the fibers are cleaned by low level Start prefusion heating f 6 READY FOR SPLICING After prefusion is complete the splicer sends new messages to the message field telling you it is waiting for you to com PRESS FUSE BUTTON plete final inspection and alignment k k Inspect fiber This is your last chance to check the fibers before splicing so you should switch between the two viewing angles by press Check from both angles ing VIEW button looking for dust or any other impe
48. dling and Enter service mode Choose current test Reject other operations 4 The splicer will then instruct you that in order to start the current test you must press the FUSE button Run current test 5 The splicer will then run the current test store the value for RTC CURRENT and carry out the splicing sequence to its completion If the splicer can not splice the tested fibers fi fi TESTING CURRENT k k because they became damaged during the test it will dis play the fault message REPLACE FIBERS and you will have to replace the fibers before splicing If you run the test a 6 SPLICING using Program 05 the splicer can not save a value for RTC J J CURRENT and will display CHANGES NOT SAVED 56 ADVANCED OPERATION Special functions Service functions Electrode cleaning program CLEAN ELECTRODES If you press the button and you do not have a hot core Sa aS 7 t alignment program in memory the first question will be asked EE ge E is whether you want to Clean electrodes This is some i E ET thing that should be done every time you brush off or replace the electrodes and is a recommended measure after every Magnified electrode tip with seat twenty splices If you want to run the cleaning program press a 6 TO START ELECT CLEAN To then start the cleaning program press FUSE To J J repeat the program which is recommended press FUSE again when the program ends When done cleaning
49. e editing procedure 2 To enter new values for the parameters The VIEW button brings up the screen viewer so you can check the current values for parameters The YES button is used to answer two sorts of questions 1 In navigation through a procedure to answer that you want to make the changes involved in the next step 2 With binary parameter values see description on the following page to turn a parameter ON The NO button is used to answer two sorts of questions 1 In navigation to answer that you do NOT want to make the changes involved in the next step Itis by pushing the NO button that you accelerate yourself from step to step during the editing procedure 2 With binary parameter values see description on the following page to turn a parameter OFF The number buttons are used to enter numerical values for quantitative parameters Navigation through the parameter editing procedure Navigation during parameter editing occurs by means of Yes No questions The editing procedure has been designed in blocks The steps 1 10 you have just gone through corre spond to these blocks If you notice each of these blocks is prefaced by a Yes No question If you answer Yes you go through the step and carry out the changes it entails If you answer No you jump to the next step This makes it possible to speed up the editing procedure if you know in advance what you want to change 50 ADVANCED OPERATION Parameter edit
50. e entire sequence the chosen splicing program will be displayed in the mode field in our example TITAN SM SM P03 while in the message field the splicer will keep you ROUGH ALIGNMENT abreast of what it is doing PREFUSION WILL START ROUGH ALIGNMENT If at any point the splicer cannot carry out some part of the ALIGNING FIBERS automatic sequence a fault message will appear in the message field If this occurs you should look at Trouble SPLICING WILL START shooting in Appendix A p 67 SPLICING 5 7 If at any point you want to interrupt the automatic se quence press the Q button To then re start the splicing sequence press FUSE BASIC OPERATION Automode splicing 17 Manual mode splicing GD Splicer ready At this point you should have chosen Manual mode for the splicing mode see p 14 and a splicing program To con tinue our example we will assume you have chosen Program FSU 975 MANUAL MODE 03 for titanium fiber splicing This will give you the adjacent TITAN SM SM P03 screen with FSU 975 MANUAL MODE in the mode field and the program name TITAN SM SM and program number P03 in the message field 6 READY FOR PREFUSING The splicer will then display a series of messages in the message field that tell you that it is ready PRESS FUSE BUTTON 7 5 ED Roughly align fibers In order to roughly align the fibers with respect to each other you should alternately press thet an
51. e of display Different splicers have different sets of languages DISPLAY GAP ANGLE Stop during alignment to display 2 the view and gap angles ALTITUDE For current compensation at S altitudes other than sea level Q 2 MAX GAP ANGLE If gap angle greater than this parameter s value a warning 2 is given MAX VIEW ANGLE If view angle greater than this parameter s value because of dust in V grooves or fiber bending a warning is given STOP AT FUSION If ON the splicing sequence will be paused after alignment Range 0 12 ON OFF 2 00 8 00 km O SSe 0 9 9 ON OFF Default ENGLISH 0 OFF NO 0 00 km 2 0 0 6 OFF NO Continued on the following page DISPLAY ANGLES and ALTITUDE will be described in greater detail on pages 54 and 55 52 ADVANCED OPERATION Special functions Quick character selection Estimation parameters Current CPU settings Parameter LOSS EST LEV SHOW LOSS TO MACROBENDING RTC CURR LOL RTC CURR HIL SPLICES TOTAL SPLICES RESET SPLICES WAIT TIME ELECTROD WARNING TURN OFF YEAR MONTH DAY HOUR MIN Function Gives you the option of deciding in what cases you want the splicer to estimate the splice loss 0 Turns off loss estimation 1 Estimation only when in Automode 2 Always do loss estimation When the estimated loss exceeds this value the splicer will display BAD SPLICE
52. e splicer automatically sets limits in other cases One such example is the Threshold type test see p 31 during which the splicer will run no more than 100 cycles i e collect one hundred data points before ending the test automatically 32 ADVANCED OPERATION Splicing program structure Splicing process Pulling or tapering Pre defined program 09 Pulling or tapering is used primarily to create micro lenses and microscope fiber probes out of fiber end faces During the process the splicer simultaneously pulls and heats the fibers into an hour glass shape that eventually divides at the tip This tapering process increases the mode field diameter to give the fiber a higher numerical aperture To then capital ize on this phenomenon to make a micro lens the ends are made to take on a semi spherical form which can focus light from an external source into the core Pulling or tapering control parameters PULL 1 PULL 2 PULL 3 are the three parameters controlling the pulling or tapering process They represent three rounds of pulling and each is associated with the FUSION CURRENT and FUSION TIME carrying the same number eg FUSION CURRENT 2 is the current used during PULL 2 The PULL parameters are binary and can only be turned off or on Sample program for creating fiber probes FUSION CURRENT 1 12 mA FUSION TIME 1 15 sec PULL 1 Yes FUSION CURRENT 2 10 mA FUSION TIME 2 5 sec PULL 2 Yes FUSION CURRENT 3 7 mA FUSION
53. ean any part of the splicer e Keep the electrode housing clean and dry at all times Use the electrode cleaning program after every time you clean or change the electrodes otherwise the arc will be unstable Transport and Storage Never leave your splicer in direct sunlight or in places where it might be exposed to excessive heat Such as in vehicles parked in the sun e Always transport the splicer in its carrying case to avoid damage to its precision parts e Keep the humidity to a minimum where the splicer is stored The humidity must not ex ceed 95 If moisture forms on the optics when moving the splicer from an area with very cold tempera ture to a warmer environ ment let the splicer sit and warm up before using it e Close the safety shield during transport The FSU 975 is a precision instrument and must be treated as such Safety Information 5 Description of the FSU 975 The FSU 975 is delivered in a rugged cabin size carrying case along with the basic set of tools you need to get started splicing Q FSU 975 fusion splicer 2 Tool set with one electrode brush one set of tweezers a seven piece hexogonal key set and one hex wrench 3 Carrying case 4 Pair of spare electrodes 5 Two pairs of V grooves Blue 125 um 1mm Black 250 um 2mm 6 Software package User s manual Electrodes eee es 23 Safety shield Right fiber clamp Electrode
54. ecom AB Jakobs Westins gatan 1B S 104 22 Stockholm tel 46 8 441 1995 Switzerland Ericsson AG Stationstrasse 5 CH 8306 Bruttisellen tel 41 1 8053314 Taiwan Rock amp Brothers Ent Ltd No19 1 Lane 1 Alley 176 Fu Ten One 1 Road Hsichin Chew Taipei Hsiew tel 866226931888 Thailand Ericsson Thailand Ltd 21st floor The Suntowers Bldg B 123 Vibhavadee Rangsit Rd Chatuchak 109 00 Bangkok tel 66 2 2997000 Turkey Ericsson Telekommunikasjon AS Branch Office Cinnah Caddesi No 41 10 13 06680 Cankaya Ankara tel 90 3126151500 Tele Site Telekommunikasjon Ltd Nenehatun Caddesi 28 2 Gaziosmanpasa 067 00 Ankara tel 90 3124472500 United Kingdom Comtec Cable Accessories Ltd Norman Way Ind Estate Over Cambridge CB4 5QE tel 44 1 954 232 056 United States Amherst Fiber Optics Brentwood Commons Two Suite 205 750 Old Hickory Blvd Brentwood TN 37027 tel 1 615 376 4396 Uruguay Reycom electr nica S A Bernardo de Irigoyen 972 Piso 6 1304 Buenos Aires Argentina tel 64 1 307 2185 79 Ericsson representatives Ericsson Cables AB Network Products Landsvagen 66 S 172 87 Sundbyberg SWEDEN Tel 46 8 764 0900 Telex 14723 ERINET S Telefax 46 8 98 5503 89ST018 R1E Ericsson Cables AB
55. ed on this page will be discussed in greater detail in the section on Advanced splicing parameters pp 60 7 ADVANCED OPERATION Splicing program structure Parameters 37 Pre defined programs Programs 01 10 As was explained in the section on Basic Operation the FSU 975 comes with ten pre defined programs These programs represent all five splicing processes and are intended to cover a wide array of splicing needs It is also recommended that you use them as a base when designing your own pro grams With this in mind the following cards list these pro grams parameters You can also see a program s param eters by following the instructions on page 13 for bringing up the screen viewer Keep in mind though that these pro grams are NOT editable So if you want to make modifica tions you will have to copy the program to one of the editable slots by following the instructions in the following section 0 2s 10 0 mA 50 0 um 8 0 um 0 3s 10 5 mA 2 0s 14 0 mA 2 0s 13 0 mA 9 0 um 9 0 um 6 5 mA YES 0 15 um 04 Program 01 Program 02 Program 03 NORMAL SM SM DSF SM SM TITAN SM SM Standard single fiber Depressed cladding fiber Titanium fiber Normal splicing Normal splicing Normal splicing PREFUSE TIME 0 2 s PREFUSE TIME 0 2 s PREFUSE TIME PREFUSE CURRENT 10 0 mA PREFUSE CURRENT 10 0 mA PREFUSE CURRENT GAP 50 0 um GAP 50 0 um GAP OVERLAP 10 0 um OVERLAP 8 0
56. egardless of whether you have just gone through the pro gram selection procedure or are starting program editing Start program editing here you press ENTER to enter editing mode It is equiva a 6 Program to edit in mode field lent to step D in the program selection procedure The NEW PROGRAM splicer will then ask you possibly for the second time if you kk want to change program If the program listed in the mode field is indeed the one you want to edit you should answer No and reject program No selection Reject program selection The splicer will then ask if you want to edit parameters and G EDIT PARAMETERS 9 9 you confirm this by pressing eg At this point you will enter program editing mode If you answer No you will exit both program editing and program selection and will return to splicing mode Yes Confirm editing 3 Pass through security CC GERIG T v If the program you have selected in step 1 is classified as an Open program you will not be asked to enter a key number a security code If however the selected program is classified as either Read only or Confidential you must enter the security code at this point using the number buttons Remember that the Type in security code number buttons are organized such that the first button from the left corresponds to the first number of the code the second button to the second number and the third to the third You wi
57. er values 51 Buttons overview 7 C Carrying case 5 6 Character selection 44 See also Quick character selection Cleaning electrodes 64 fiber clamps 63 fiber during preparation 10 V grooves 10 63 Cleave angle See Gap angle Cleaving 11 cleaving lengths 77 Control parameters 35 46 Core 22 eccentricity 22 28 29 35 Core deformation 59 CPU settings 53 Current test 56 D Date time 53 Desired attentuation 32 35 Display gap angle 52 54 E Early prefusion 37 67 ECF factor 32 35 Electrode brush 6 Electrode warning 53 Electrodes 6 changing 65 cleaning program 5 57 64 maintenance 5 64 safety 5 Enter button 50 Erbium splicing See Splicing processes erbium splicing Escape button 7 17 External monitor 77 F Fault messages 17 68 Faults observable 70 Fiber clamps 6 12 23 maintenance 63 Fiber fixtures 6 23 Fiber insertion 12 Fiber preparation 70 defects 13 Fiber types 26 34 45 depressed cladding 27 dispersion shifted 27 erbium 26 invisible core 27 multimode 26 silica core 27 Focusing monitor 7 Fuse button 7 17 20 Fuses 7 replacing 62 Fusion current parameters 36 Fusion time parameters 36 G Gap 36 Gap angle 54 Gap button 7 19 Global parameters 52 H Heat oven 6 23 Heat shrinkable sleeve 10 23 Hot core alignment 27 22 See Splicing processes hot core alignment Hot fiber index profile 30 Hot images 4 27 22 59 button 7 Humidity 5 Index limit 30 35 Inde
58. ers from a PC computer Splicing program editing is also facilitated in that you can edit and store pro grams centrally on a PC downloading them to individual splicers as needed Program parameters x Name and Type Control parameters Splicing parameters PM parameters Comment Prefuse time 0 2 second Fusion current 3 25 mA Send to FSU Prefuse current fi 0 m Left M F D jas fum Save to file Gap distance 50 um Right M F D E um Set default Fusion time 1 os feecond Set center position 225 Close Fusion current 1 fi 0 5 m ADA current fo m Fusion time 2 2 second T Early prefusiort Fusion current 2 fi 5 m Align accuracy 0 15 Fusion time 3 2 second Overlap fe Example of the interface for splicing program editing Software package 67 Appendix A Troubleshooting The following three tables present the fault messages that will appear when there is a problem along with possible causes and suggested corrective messages The first table applies to all splicing processes whereas the other two are specific to mode field matching and attenuator making respectively Fault message LOW BATTERY CHECK ELECTRODE WEAR NO FIBER FOUND NO LEFT FIBER FOUND NO RIGHT FIBER FOUND NO GAP FOUND BAD LEFT GAP BAD RIGHT GAP BAD LEFT GAP ANGLE BAD RIGHT GAP ANGLE BAD FIBERS DIRTY FIBERS DIRTY LEFT FIBER DIRTY RIGHT FIBER CAN T ALIGN VERY GOOD 68 Appendix
59. es eo rio cece tiret iri tetere reetis 28 Program parameters ssssssssrrrrrrnnnnnnnnnnnnnnnnnnnneeeeeeeesesesseseserereeeeee 34 Pre defined programs Programs 01 10 38 Program editing Programs 11 50 sese 40 Parameter editing review c2cicecstcrctosptaunpeunseunpenugarn ene dennenepdecteepecuuanevecunacrenenred 50 Special TUNG H NS snini a e r a e aa aaa eaa aaea aaraa dadalina i 52 Quick character selection eee 52 Global parameters Program OO sees esse eee eee 52 Service functions bUtton sss 56 Advanced hot image anayasa sese eee ee eee eee eee eee 59 Advanced splicing parameters eee eee eee 60 MAINTCN ARCS sersestupstasbianstassises tice ginn TEET 62 Power Connection sees exe ainda ie alate es 62 Fiber clamps and V QrOOVES cesser 63 Electrodes ornidin eii a aiad a a aa adadda do iay 64 IA TT eas Tal 66 Maintenance time table sese 66 SoftWare package cxtesedacetacesiadcnsecantdentoentdestocntaateaus ene censdececeardeutaent deb beeptuaneccetacteens Enaren 67 Appendices A Troubleshooting siisii iaiia dadia datadas dadaa daia 68 B Tech hnical DAL cactcacs cacetenncecocuntdsteauptdentauieiradenngacydaptaseaenedebteebtderaernadecauadaceciel 71 C Parameter and program editing flow chanta esse eee eee eee eee 72 NAX T 77 Ericsson representatives esse ee eee eee eee eee eee 79 Table of contents 3 Introduction 4 Introduction FSU 975 Operations Processes The FSU 975 is designed
60. ess do if G LOSS FACTOR 0 35 9 5 You should note that the procedure for editing control parameters has a logic that applies to all parameter edit ing So once you are used to the logic for control param Type in new value Enter value eter editing you will know how to change any FSU 975 parameter see also p 50 for a review of this logic ADVANCED OPERATION Program editing 47 Edit splicing parameters T EDIT SPLICING PARAS 99 For a full list of splicing parameters see pp 36 7 If you have just edited control parameters this step will be very straight forward First the splicer will ask you Edit splicing paras and once again you have the option of pressing the VIEW button to bring up the screen viewer If opened the screen viewer will come up with the splicing Open screen viewer parameters highlighted If you press No you go on to step 10 Next if you want to edit the splicing parameters press In the example shown to the right the values you can Affirm wish to change change are highlighted However they will not be high Y PREFUSE TIME 0 23 S 9 3 lighted in the message field of the splicer C C Step by step After you press Yes the first splicing parameter PREFUSE TIME will appear in the message field along with its current value If you want to change it you use the number buttons l to change it When you have the desired value for the pa Type in new value rameter press ENTE
61. eter is 6 5 mA and it is important not to deviate too far from the de fault value Too high of a current will lead to matchsticking Too low of a current can perma nently damage the electrical equipment in such a way that the arc won t be able to ignite 60 ADVANCED OPERATION Special functions Advanced splicing parameters Prefusion before alignment EARLY PREFUSION The parameter EARLY PREFUSION is also specifically de signed for the problems associated with carbon coated fibers The carbon coating has a tendency to give off more material during arc ignition and thus cause more build up on the electrodes To avoid this you can set EARLY PREFUSION to ON and the prefusion will occurs before the fibers are brought close to the electrodes during alignment Increased build up on electrodes from carbon coated fiber Alignment accuracy ALIGN ACCURACY Alignment is executed with the degree of accuracy specified in this parameter There may be cases however where the splicing combination demands or allows for a greater or lesser degree of accuracy than the default of 0 15 um You should keep in mind though that increased accuracy is paid for in terms of the increased time it takes for the splicer to align the fibers ADVANCED OPERATION Special functions Advanced splicing parameters 61 Maintenance O Power connection There are several maintenance tasks connected with keeping the FSU 975 supplied with power Fu
62. g programs including the pre defined ones can be organized according to five splicing processes normal splicing hot core alignment mode field matching attenuator making and pulling or tapering Whereas this cross cut of FSU operations will be only men tioned briefly in the section on Basic Operation it will play a large role in Advanced Operation Generally speaking even though you will not need to specify splicing processes when using the pre defined programs it always helpful to keep splicing process in mind when discussing any splicing pro gram since it specifies the steps the FSU 975 goes through when splicing Safety Information Operational Precautions e Do not use the splicer in locations where there is a risk of explosion e Never touch the elec trodes when the splicer is on e Never open the safety shield or the power sup ply during operation e Never loosen any screws except those mentioned in this manual since you may harm important adjustments 6 Do not insert objects other than stripped and cleaned optical fiber or cleaning and mainte nance tools into the splicer General rule is Maintenance Precautions e Never use hard ob jects to clean the V grooves or electrodes Use the supplied brush or in the case of the V grooves isopropyl alco hol and cotton swabs Never use acetone for cleaning any part of the splicer e Never use cans with compressed gas to cl
63. greater than 100 splices per charge Splicer and heat oven greater than 50 splices per charge Recharging time 10 hours 0 40 C 0 95 RH non condensing 40 60 C 0 95 RH non condensing 3 high resolution LCD monitor 1 V p p positive 75 ohms CCIR 37 x 22 x 14 5 cm W xD x H approx 14 6 x 8 7 x 5 7 in 6 45 kg without power supply approx 14 2 Ibs Rugged cabin sized case with space for all necessary accessories 54 5 x 42 5 x 25 5 cm approx 21 5 x 16 7 x 10 in W x Dx H upright Power ground Not used Not used Video ground G Q E GM Optional 8 Not used 9 NS AUX connector pin description Composite video Disable FSU 975 OFF button active low To prevent external units from losing power when using internal power from FSU 975 Power 12 V DC Fuse 2A The AUX connector is intended for external units such as a larger monitor RS 232 pin description Power ground T x D Transmit data R x D Receive data RTS Request to send To CPU board No function To CPU board EXTM signal Not used CTS 12 V pull up 1 ko Power 12 V DC Fuse 2A 1 2 3 4 5 6 7 8 9 The RS 232 is intended for serial communication with a PC or printer Appendix B Technical data 71 Appendix C Parameter and program editing flow charts The following flow charts are provided to the advanced user as a concise summary of the capabilities of the FSU 975 With a
64. ht cause attenuation problems BASIC OPERATION Splice protection 23 ADVANCED OPERATION Program structure overview The following elements form the backbone to all FSU 975 splic ing programs Each will be described in greater detail on the indicated pages 26 NORMAL SM Program NAME s ssssssssssssnnnnnnsrn enn n nn ANAR RAR R AREA RANN RAR RAR XXXXX XX XX Certain limitations hold in splicing program names REPERI must be correctly specified in a splicing program Splicing procesSS sssssssssssssnnsssnssrrnnrnnnn2nn ann ARA ARR R RAR nn 28 6 Prefusion Cleaning There are five different splicing processes available with the FSU 975 18 Ir Program parameters 2 ccceeeeessseesensennseeeeeeeeeeeees 34 The parameters contain the quantitative information needed to execute the various splicing programs They are permanantly set in the case of the pre defined programs however can be edited in the case of Programs 11 50 glas 26 Various fiber types behave differently when spliced so the fiber type ADVANCED OPERATION Program structure overview 25 Splicing program structure O Program name The names of FSU 975 splicing programs can have no more than 16 characters and should be designed for quick and easy recognition When a splicing program is displayed it will always be with its number like the pre defined programs ECCENTRIC Mg Y y are NORMAL SM XXXXX XX XX L NOR
65. icing the FSU 975 automatically calculates a splice loss estimation and makes available two hot images To see analysis of these hot images press HOT IMAGE when one of the live images is on the screen The hot 1ST IMAGE 1 lingi QUIT HOT IMAGE ESC image that comes up will indicate which of the two images it is here Ist Image Hot image appears To do advanced hot image analysis press ENTER Access advanced l hot image analysis This will bring up the first of the three levels of advanced hot 3 1 images The first includes light intensity curves which can be used to determine the type of fiber being spliced We have seen them earlier in the section on fiber types on pages 26 7 The 1ST IMAGE indicates that it is the first of the two hot images taken during the splicing sequence 1ST IMAGE _ QUIT HOT IMAGE ESC Light intensity curves DOR next level of hot image analysis Press ENTER to go to the next level of hot image analysis The next level of analysis includes three sets of graphs A On the far left are two graphs showing the hot fiber index profiles light intensity profiles from the top top graph and the bottom bottom graph In the center are found two graphs that show the core deformations dotted line and the base line tilting Solid line at a magnification of 15x measured both longitudinally top 1ST IMAGE and transversally bottom QUIT HOT IMAGE ESC On the f
66. ill successively be shown in the message field while you scroll through them by pressing No When the fiber type you want is shown in the message field you press CHANGE FIBER PROCESS JJ Open screen viewer STANDARD FIBER NORMAL SPLICING PREFUS TIME PREFUSE CURR P Screen viewer with fiber type and splicing process highlighted Affirm wish to change fiber type and or process 6 CHANGE FIBER TYPE k 5 To change fiber type 6 STANDARD FIBER mA DEPRESS CLAD FIBER ERBIUM FIBER INVISIBLE Td FIBER MULTIMODE FIBER Choose fiber type ADVANCED OPERATION Program editing 45 B The same procedure is then repeated in the case of splic a 6 ing process The splicer will ask Change process type CHANGE PROCESS TYPE and you respond by pressing if you do indeed want to change it If you only wanted to change the fiber type and do not want to change the splicing process you can press No and go on To change splicing process to step 8 f NORMAL SPLICING If you press Yes the list of splicing processes will present itself one by one in the message field while you scroll HOT CORE ALIGNMENT through the list by pressing No If by chance you miss the splicing process you want you can get it back in the monitor 2 by pushing No until the list wraps around eg If you press No MODE FELD MATCHING after Pulling or tapering you will next see Normal splic No ing again AT
67. ing review Types of parameter values Parameters can be divided according to the kind of values they hold In the FSU 975 there are three major types of parameter values each of which involves a slightly different editing procedure 1 Quantitative parameter values A PREFUSE TIME 03S 9 9 A quantitative parameter value is a number An example is found in PREFUSE TIME which we saw edited on page 48 The general procedure is as follows s ee ee ee example page 48 The parameter appears with its current value You can change the value using the number buttons You press ENTER to save the new value 2 Binary parameter values EARLY PREFUSION ON YES A binary parameter value has two states usually either ON or k k OFF An example of this type of value amongst the splicing parameters is EARLY PREFUSION which we will take as an example here The parameter name is presented as a question and a Toggle on off variable region which toggles between Yes and No Press the No button to turn the parameter off and the button to turn it back on again Ente Press ENTER to save the value of the parameter Enter value 3 Parameters with multiple values k G OPEN There are a few parameters which have multiple non numeri cal values An example amongst the general parameters is READ ONLY SECURITY TYPE which we saw editted on page 43 The general procedure is as follows The first possible value for the parameter occurs with a CONFIDENT
68. ingle fiber Standard single fiber Single fiber with 80 um core 9 Splicing processes are explained in the section on Advanced Operation see p 28 MCVD and OVD refer to fiber production methods and respectively stand for Modified Chemical Vapor Deposition and Outside Vapor Deposition Viewing splicing program parameters If you wish to look at a listing of the splicing program param eters for a particular program you should press ENTER as if you wanted to change splicing program and then rather than answer Yes or No to the question New program press VIEW This will bring up the screen viewer for the program in memory see adjacent example You can flip through pages by pressing VIEW and when you are finished reviewing the parameters you press ENTER to exit the screen viewer or press YES or NO thereby directly entering the sequence for splicing program selection at step B see p 14 You should keep in mind though that this is only an option for non confidential programs Splicing mode The term splicing mode in singular is not to be confused with the two splicing modes Automode and Manual mode When the FSU 975 is in splicing mode or returns to splicing mode it means that it is ready to to splice on your command In short it represents a state of splicing readiness The FSU 975 exits splicing mode whenever you press ENTER to select a program or to edit a program 16
69. ion in optional step BB on the next page as to how you can access the screen viewer 14 BASIC OPERATION Splicing mode and program selection Change splicing mode f 6 FSU 975 MANUAL MODE toggle between by pushing MODE FSU 975 AUTO MODE 9 5 To change splicing program 66 NORMAL SM SM P01 NEW PROGRAM 75 Confirm wish to change l cont next page BB As an optional step you can then press VIEW to see the sceen viewer with a list over all of the the splicing programs in memory To scroll through the pages press VIEW Open screen viewer To escape from the screen viewer press ESC G S TITAN SM SM P03 NORMAL MM MM P04 ECCENTRIC SM SM P05 ERBIUM SM MCVD P06 ERBIUM SM OVD P07 SM ATTENUATOR P08 SM FIBER LENS P09 SM 80 UM MICRON P10 P11 P12 P13 P14 NORMAL SM SM PO1 EXIT SCREEVIEW ESC Screen viewer for selecting a new program C To select a new program you can either scroll through the programs using the and H buttons or you can type in the number of the program you want using the first two numerical buttons from the left Let s say we wanted to splice titanium fibers P03 To do so we would either press 9 new program oe T the button twice or type in 0 with the first numerical button and 3 with the second D You then confirm your selection by pressing ENTER Enter new program E The mode field will then display your new selected pro 6 TITAN SM SM POS
70. ll then have to confirm the code by pressing ENTER If you have entered the wrong code you will be aborted from Enter code program editing ADVANCED OPERATION Program editing 41 CD Use another program as a base 6 6 c6py PARAMETERS As has been recommended earlier it is helpful to use another program as a base when designing your own If you want to do so and copy the parameters of another program into the slots of your new program you should press e at this point If you do not want to copy parameters from another program because you are editing again a program you designed Confirm wish to copy previously for example you should press No and go onto step 5 on the following page 6 COPY SOURCE Pyy 5 2 The splicer will then ask in the message field which program you want to copy Copy Source Pyy and you must enter the number of the program you want to copy by using the first two number buttons from the left Let s say that we chose to copy the parameters from Program 08 In that case Type in source pro you would enter a 0 with the first number button and an 8 gram number with the second You enter the choice of source program by pressing ENTER Enter source program The splicer will then ask you to confirm that you want to re k 6 place the parameters in the program selected in step 1 with OVERWRITE Pxx 7 those of the source program just selected This confirmation k k is very similar
71. lues you can change are highlighted However they will not be high lighted in the message field of the splicer Type in new value Step by step In the adjacent example you will first see Index limit with its present value which you can change by pressing the first two numerical buttons from the left until the desired value is Enter value displayed You then press ENTER bk T The next control parameter is Threshold type which will be TYPE THRESHOLD TEST presented to you in the form of a list of all the possible val ues You scroll through this list by pressing No until the desired value is displayed You then press TYPE DIFFERENCE The last mode field matching parameter is LOSS FACTOR TYPE LEFT which will appear in the message field along with its present value You enter a new value if desired with the numerical buttons and then press ENTER TYPE RIGHT TYPE HIGHER In short Each of the parameters appears successively in the message TYPE HIGH START 9 9 field and you first change its value with either the number i buttons in the case of quantitative parameters or Yes and No buttons in the case of a binary On Off parameters and Yes then press ENTER to save the new value The only excep tions are parameters such as Threshold type test which Choose Threshold type have several distinct non numerical values These param eters will present themselves as fiber type and splicing pro c
72. mastery of the FSU 975 interface and technique one can use these flow charts to quickly locate parameters and functionality within the splicer s software Below is a key to under stand the symbols used within the flow charts The flow charts themselves are presented in the following order Global parameters 73 Program editing s ssssssssssssssssse enen eenn eenn 74 Service enle 76 Key to flow charts Soig handing Questions that require a YES or NO answer as response are indicated j S with a rectangle Quantitative parameters that require you to enter a value and then press ENTER eon ET are indicated with an oval The editable area is indicated with a grey box Fusion current 1 10 5 mA N Binary parameters which you toggle off and on with the YES and NO buttons and then select a state by pressing ENTER are indicated in the same fashion Open Parameters with multiple values that require you to scroll through the list by Read Only pressing NO and then selecting the desired value by pressing ENTER see p 51 Confidential are indicated by a rounded box including the list of possible parameter values YES button NO button ENTER button button S Q lt Parameter updating Any messages the splicer displays that don t require responses will be indicated in quotations marks Resets splice Any explanatory information will be indicated with italics counter to 0 The pages are organized with white a
73. me 53 Y Yes button 50 Ericsson representatives Argentina Reycom electr nica S A Bernardo de Irigoyen 972 Piso 6 1304 Buenos Aires tel 64 1 307 2185 Belgium Phase Optic S A Z A de Vaubesnard 7 chemin de Vaubesnard F 91410 Dourdan France tel 33 1 645512 00 Brazil ASGA Microelectr nica S A Rodovia Dr Roberto Moreira Km 4 CP 132 13140 000 Paulinia SP tel 55 19 8442020 Canada Amherst Fiber Optics Brentwood Commons Two Suite 205 750 Old Hickory Blvd Brentwood TN 37027 USA tel 1 615 376 4396 China Wall International Group Vantone Plaza Room B1606 No 2 Fu Cheng Men Wai Street Beijing 100037 tel 86 10 68579091 Czech Republic HKE spol s ro Na Cikorce 3 CZ 143 00 Prague 4 tel 420 2 402 6889 Denmark Ericsson Components Dist Sluseholmen 8 DK 1790 Copenhagen V tel 45 33883101 Finland Viikinkikaapeli Oy Sierakiventie 8 SF 02780 Espoo tel 358 9 299 65 00 France Phase Optic S A Z A de Vaubesnard 7 chemin de Vaubesnard F 91410 Dourdan tel 33 1 64551200 Germany Macrotron Systems Ammerthalstrasse 7 D 85551 Kirchheim tel 49 8 945 111 283 Hong Kong Comtec Far East Reg Office Rm 607 Austin Tower 22 26A Austin Ave Tsim shatsui Kowloon tel 852 23 112 263 India Subex Systems Ltd 721 7 Main Mahalaxmi Layout Bangalore 560 086 tel 91 80 3327581 Ericsson Comm Pvt Ltd The Great Eastern Plaza 2 A Bhikaji Cama Place
74. ment 17 18 RSR 232 7 71 RTC current 29 35 56 RTC current high 53 RTC current low 53 RTC cycles 32 S Safety 5 Safety shield 5 6 12 13 Screen viewer 15 16 Security 41 43 code 34 43 type 34 43 Service functions 56 Service mode 58 Set center position 37 60 Set up checklist 8 Show loss to 53 Software 6 67 Source program 42 Splice counter 53 64 Splice evaluation 21 Splice loss 4 21 estimation 21 Splice loss estimation 4 parameters 53 Splice protection 23 Splice list handling 57 list codes 57 operator number 57 printing out 58 Splicing mode definition 16 Splicing mode selection 14 Splicing parameters 36 48 Splicing processes 4 28 34 46 attenuator making 4 16 32 35 erbium splicing 4 26 30 hot core alignment 16 29 35 mode field matching 16 30 35 normal 16 28 pulling or tapering 4 16 33 35 Splicing programs editable 4 40 naming 26 34 44 Programs 01 10 4 16 26 38 selection 14 Splicing quick guide 9 Stop at fusion 52 Stripping 10 Surface tension 29 32 35 T Tapering See Splicing processes pulling or tapering Target offset 32 35 Threshold type 30 35 difference 31 higher index 31 higher start 31 left index 31 right index 31 Threshold type test 30 31 Tool set 6 Turn off 9 53 V V grooves 6 8 12 black 6 8 11 blue 6 8 11 changing 63 maintenance 5 63 numbers 63 Video output 7 View angle 54 View button 50 Viewing fibers 7 Ww Wait ti
75. ng splicing pro grams into groups according to the way the splicer carries 3 out the splicing sequence The FSU 975 is organized around five different splicing processes Prefusion Cleaning Normal splicing P 2299A a HRAS 28 Thedieoremeinaiuded Hot Core alignment eee ee eee eee 29 with the splicing pro Mode field matching sss sese ee 30 cesses are actually two Attenuator MAKING se eee eee 32 superposed graphs The Pulling or tapering sese eee eee 33 bar graph represents the electrode currents with ME s respect to time The line The following descriptions will outline the special operations graph represents the fiber and considerations involved with each splicing process as distance with respect to well as the necessary control parameters to run these opera time tions to read more about control parameters see the section on program parameters p 35 Like the explanation of fiber types each description will be headed with a list of the pre defined programs that use the splicing process and thus can serve as a base for your own program Normal splicing Pre defined programs 01 04 10 trrent The normal splicing process is suitable for standard single and multimode fibers with a core to cladding eccentricity ie how much the core is not centered in the fiber of less than 0 6 um There are no fine align TAKES Warm imagos special control parameters measure touch point mam fusion
76. not directly jump to Step 5 but rather must first go through Steps 1 4 ay Choose a program tO edit eee 40 Enter editing mode eee 41 Pass through security eee eee eee ee 41 OQO Use another program as a base sse eee eee 42 E Set or change security eee eee eee eee 43 G Name or re name the program sss eee eee 44 7 Change the fiber type and splicing process 45 G Edit Control parameters see eee 46 G Edit splicing parameters eee eee eee eee 48 Re edit program vativ nicsaivaaieiatvy esate duevetatesedecteesboutbdbebsuets 49 ED Choose a program to edit To choose a program to edit you follow the program selection process You start by pressing ENTER which brings up the Start program selection question New Program You then answer and follow a 6 A the instructions listed on pages 14 15 steps A C NEW PROGRAM kk If you have already selected the program you want to edit you can jump to step 2 Choose program by following instructions on pages 14 15 A C You should note that nearly all of the splicer messages listed during program editing appear in the message field From the point you press ENTER in the first step the mode field is devoted to showing the program you are editing The adjacent figure shows an example where the program MODIFICATION 1 P26 we are editing is Program number 26 MODIFICATION 1 NEW PROGRAM 40 ADVANCED OPERATION Program editing 2 Enter editing mode R
77. on gt Clean electrodes gt Splicelist handling gt YES gt Change list On Off gt NO gt Change list codes gt NO gt Print splice list Print splicelist At this point you can press Fes to print out the splice list 6 PRINTING y 5 The splicer will then ask you if you want to Clear splicelist a G CLEAR SPLICELIST As you can clear a splice list ONLY when you print it out you J J should seriously consider clearing it once you have a good print out You press Ca clear the splice list making it possible for you to collect new data points 3 li A for Automode Fiber type Reading your splice list M for Manual mode SD for Standard single fiber Splice lists are organized SPLICE DATE TIME LOSS OPERATOR CODE CODE according to the adjacent NUMBER BED NUMBER diagram 1999 MAR 14 0 03 1999 MAR 14 0 02 1999 MAR 15 l 0 08 1999 MAR 15 0 05 Service mode ENTER SERVICE MODE G G ENTER SERVICE MODE At various points within the tree of operations under the button there is an opportunity to pass into service mode Enter service mode This is intended for authorized service personnel only so you should always just press No Reject service mode 58 ADVANCED OPERATION Special functions Service functions Advanced hot image analysis Hot Image Access hot image On pages 21 22 we talked about hot images and hot image analysis In short after spl
78. on splice defects shown below Bent core E E E oo Core offset E l a i 1 Hot spot E a Matchsticking Throughout the splicing process but especially during visual splice evaluation it is important to keep in mind the following Whereas the white line one sees in hot images This is when the core rather than form a straight line bends at the splice point A bent core is most often caused by a bad cleave and is thus a problem that can be remedied by careful re preparation of the fibers This is where the cores of the original fibers do not line up even though their claddings do This is most often the result of fibers with large core eccentricity and you should use the Hot core alignment process with them when re splicing A hot spot shows up as a bright point on the fiber It can be the result of a variety of factors dirt on the fiber poor cleav ing or air bubbles inside the fiber When a hot spot is lo cated outside the core it reduces splice strength when inside the core it also contributes to higher splice loss The best action to take is to carefully re prepare the fibers A bulge in the outer diameter usually indicates that you have used the wrong splicing program parameters so you should check the program you are using before re splicing When the splice area is thinner than the fiber diameter it means that either the fusion current was too high or that the fibers did not overlap sufficientl
79. ove the outer cover 2 Loosen the screw that holds in place the inner cover of the elec trode block Remove the inner cover with the hex wrench that comes with the splicer loosen the two screws that fasten the upper electrode Lift the upper electrode out with the electrode tweezers that come with the splicer Lower electrode steps 5 8 Loosen and remove the knob on the right side of the cover over the optical house using the hex wrench that comes with the splicer Loosen the screws on top of the cover over the optical house Remove the cover With the hex wrench that comes with the splicer loosen the two screws that fasten the lower electrode 8 Lift the lower electrode out with the electrode tweezers that come with the splicer Keep in mind The electrode tips are fragile and you should avoid touching them There is risk of damage to precision parts if you drop the electrodes into the splicer You must reset the splicer counter yourself after replacing the electrodes Loosen upper electrode Remove knob Loosen lower electrode Remove lower electrode Install the new electrodes by following the same procedure in reverse starting with step 8 and going backwards to 1 Run the elec trode cleaning program several times Reset the splicing counter to 0 see flow chart p 73 Maintenance Electrodes 65 Mirror one Be
80. pplied to take the hot images needed for measurement of the eccen tricity of the fibers as de scribed previously You can set it manually or use the current test see p 56 which sets it automatically Current Images taken at each current peak cI Image analysis Model of current test ADVANCED OPERATION Splicing program structure Splicing process 29 Mode field matching Pre defined programs 06 amp 07 The mode field matching process is intended for splic ing fibers with very dissimilar mode field diameters That is to say Different types of fiber require different diameter cores to carry their fundamen tal mode Erbium fiber for example has a smaller than average core and when you want to splice an erbium fiber with another type of fiber you must find some way to make the transition from one core to the other as smooth as pos sible in order to avoid power loss around the unmatched core edges This is achieved by means of a hot fiber index profile During splicing a fiber s dopants will diffuse into its core decreasing its index profile With two fibers this can result in a convergence of their profiles With RTC this process can be observed and the arc stopped when the best match of profiles has been achieved S take pictures to find current fiber distance time1 time2 hottiber indices AAAA AA p current2 take 3 warm l images
81. reas which contain the main editing blocks and grey areas which present the editable parameters within each of these blocks For more about navigation see p 50 72 Appendix C Flow charts Global parameters lobal program p 00 English version Swedish version Chinese version Key Number 97 5 Edit basic parameters Y Edit estimation parameters Loss estimation level 2 Display gap angle No Show loss to 2 0 dB Alititude 0 00 km Macrobending 0 3 Max gap angle 2 0 dg RTC current low 14 5 mA Edit current Max view angle 0 6 dg RTC current high E ple 20e 15 5 mA Stop at fusion Splices 101 Splice E counter Reset splices Resets splice counter to 0 Y N Change wait time Wait time 1 0 min Change electrode warning Electrode warning 20 hs Updating parameters G Change turn off Splicing mode Set date time i Appendix C Global parameters flow chart 73 Program editing Old program name Press VIEW to get list of programs in screen viewer Edit parameters Press VIEW to get Splicing mode program param eters in screen viewer Updating parameters Key number Change security code Copy source Pyy New code xx x Change security type Read only Confidential Change fiber type Standard fiber Titani
82. rfections If dust remains or you see any other problems you should abort the splicing procedure and re prepare the fibers For examples of problems you should watch out for see p 13 5 Fine tune alignment Now that you have assured yourself that the fibers are clean and of good quality you can fine tune their alignment In Align along x axis order to set the gap you use the gt and buttons bring ing the fibers as close together as possible without overlap The last movement before you set the gap must be to move the fibers inwards closer together You then briefly press the GAP button The resulting gap should be as narrow as possible but still wide enough to allow for free movement of the fibers up and down see illustration on next page Set gap After you have set the gap do not press the gt and G buttons Using the A and H buttons you can now fine tune the alignment of the outer fiber edges making sure that the two Q H fibers line up straight across the screen Align outer edges If at any point you feel the view is not clear use the and buttons to improve the focus Do not forget to fine tune the alignment from both camera angles which you can toggle between by pressing VIEW Check from both angles BASIC OPERATION Manual mode splicing 19 After fine tuning and before fusion the alignment should be as follows the outer edges of the fibers line up and the Outer edges
83. rs 2 Optical system faulty Mirrors are dirty 1 Poor cleave end faces 2 Wrong current 3 Bad cleaning liquid Suggested corrective measures 1 Clean and or change the electrodes 2 Clean the fibers Increase FUSION CURR 2 1 Align fiber in other view 2 Re prepare the fibers paying special attention to cleaning both the fibers and V grooves Re prepare the fibers paying special attention to cleaning both the fibers and V grooves 1 Charge the battery 2 Service the power supply 3 Use the battery 1 Re prepare the fibers paying special attention to cleaning both the fibers and V grooves 2 Service the splicer Service the splicer 1 Re cleave the fibers 2 Adjust current 3 Be sure you are only using pure propanol or ethanol Appendix B Technical data FSU 975 Technical data Fibers Splice loss Fiber clamping Power supply Battery Operating environment Storage environment Monitor Video output Size Weight Transport casing Single fiber with a cladding diameter 30 270 um in Automode automatic alignment 30 400 um in Manual mode manual alignment Single fiber with cladding diameter up to 2000 um Special single fibers including erbium dispersion shifted and multimode Typical value using identical single mode fibers 0 02 dB On bare fiber with blue V grooves On primary coating with black V grooves 90 264 V AC 50 60 Hz 13 2 VDC Splicer only
84. s Automode and Manual mode Note that the splicer always starts in Automode when just turned on A list of the pre defined splicing programs 01 10 is found on page 16 Splice the fibers cccccceccssssssesssssseeesseeeeeeseeeeeeeeees 17 Press the fuse button Check the Splice sssssssssssesssssssssssssse esse esse 21 Check the splice visually by pressing VIEW and scrolling through stored images Evaluate the splice quantitately by taking note of the estimated splice loss Protect the Splice sssssssssssssssrssnsnns rrnnnnn nn nn essen 23 Protect the splice with a heat shrinkable sleeve Z Select splicing mode and program ss sss 2 14 BASIC OPERATION Quick guide 9 Fiber preparation D Slip on a heat shrinkable sleeve Easily forgotten yet so frustrating Remember to always slip a heat shrinkable sleeve onto one of the fibers at the begin ning of fiber preparation 2 Strip the fiber First remove at least 50mm of secondary coating true for both tight and loose tube secondary coating with a stripper appropriate to the type of coating you have Then remove around 25 mm of the primary coating with a stripper de signed for primary coating See also pictures below It is important that you do not put undue stress on the fibers by bending or crimping them Illustrations of E for secondary and primary coating ALA SER tube DB coating Tight secondary coating Primary co
85. ses The fuses are located in the rear panel of the splicer see diagram p 7 There is a 6A fuse intended for the splicer and heat oven and a 2A fuse related to the outlet marked AUX Both of them are delayed action fuses When they must be replaced you should carefully remove them with a screw driver see adjacent picture and replace them with delayed action fuses of the correct amperage Battery The battery is delivered uncharged so the first thing you must do with it is to charge it To charge it you should con nected it to the power supply input 90 264 V AC output 12V DC Note that it takes approximately ten hours to charge an empty battery so plan in advance Do not charge the battery for a longer period of time since this will shorten the battery s lifetime The other thing to note is that the battery will slowly discharge even when unused so you should plan to routinely FSU 975 battery charge it once a month While the battery is in use the splicer will display the warning a 6 LOW BATTERY LOW BATTERY when the battery voltage is under 11 0 V J J This is a signal to you that you will soon have to stop splicing with it and recharge it You can also check the battery volt age at any time by connecting it to the splicer selecting manual mode with the MODE button see p 14 and holding down the button until the battery voltage is displayed 62 Maintenance Power connection Fiber clamps and V groo
86. spersion it is usually only used in smaller local networks On the other hand its advantage is that it is relatively easy to splice If you are ever not sure whether you have multimode fiber it is quite easy to identify it by looking at its distinctive hot image profile en L FESTIM LOSB 6 0146 26 ADVANCED OPERATION Splicing program structure Program name Hot image of multimode fibers Depressed cladding fiber DEPRESS CLAD FIBER Pre defined program 02 Depressed cladding fibers are doped with both germanium in the core and flourine in the inner part of the cladding The purpose of this double doping is to reduce dispersion at a chosen wavelength As with titanium doped fibers the in creased radiation from the dopants makes it difficult to distin guish the core in hot images so a special filtering technique must be applied The other difficulty you might encounter is that the dopants have a tendency to diffuse during splicing resulting in higher splice loss R 6 6548 Hot image of depressed cladding fibers Dispersion shifted fiber DEPRESS CLAD FIBER or INVISIBLE CORE FIB Pre defined program 02 Like depressed cladding fiber dispersion shifted fiber is designed to achieve a low level of dispersion at a chosen wavelength And again like depressed cladding fiber the dopants used to create the necessary gradation of refractive indexes make the core very difficult to see in hot images Because of their
87. ssible causes During the threshold type test the button was not pressed and thus no new loss data was saved Insufficient data for calculating a threshold type Insufficient data for calculating a threshold type Insufficient data for calculating a threshold type Insufficient data for calculating a threshold type Insufficient differences in index profiles to calculate a threshold type procedure by pressing the ESC button Suggested corrective measures 1 Adjust the focus 2 Service the splicer 1 Clean the V grooves 2 Service the splicer Service the splicer 1 Re fuse the fibers 2 Check the program and program parameters and then re splice 3 Service the splicer Re splice the fibers Suggested corrective measures To compute the threshold anyway with the latest memorized data press YES Re do the test paying special attention to taking data for splice loss measurement Reduce FUSION TIME 2 and re do test Increase FUSION CURRENT 2 and re do test Reduce FUSION CURRENT 2 and re do test Try splicing with the normal splicing process Appendix A Troubleshooting 69 Attenuator making fault messages Fault message CANNOT ESTIMATE FUSION CURR TOO HIGH RTC CURRENT TOO HIGH RTC CURRENT TOO LOW ECF FACTOR TOO SMALL Observable faults Possible causes If anything is wrong in the RTC procedure the splicer will not give a loss estimation Fusion current
88. the electrodes restart the splicer by pressing ON OFF twice To start electrode cleaning program Splice list handling If you press the G button and reply No to the question of whether you want to clean the electrodes you will gain ac cess to splice list handling The splice list handling proce dure occurs in three stages 1 Turn on splice list handling L G SPLICE LISTON YES 9 5 You first must turn splice list handling on by turning on the binary parameter SPLICE LIST button gt Clean electrodes gt NO gt Splicelist handling gt YES gt Change list On Off gt YES gt Splice list On If necessary press Yes again so the parameter reads Splice list On Yes Then press ENTER Turn on splice list The splicer will then give you the opportunity of setting three 6 organizational parameters by asking Change list codes CHANGE K CODES 99 Y If you say E you will have a chance to specify codes that can be used to organize your splicing data To access list codes OPERATOR NBR is intended to specify who it is that is creat amp OPERATOR NBR 00 ing the splicing data It can be changed during data collec tion so that operators can be compared You must assign L the numbers yourself LIST CODE 1 is the first two entirely open areas where you T LIST CODE 1 00 99 can tag data with additional information that might be impor tant for later analysis An example might be if you want to
89. the middle of the monitor Gener ally speaking you want to leave it at 255 which represents the number of pixels from the left edge to the center of the monitor However with certain types of fibers eg carbon coated fibers it might be advantageous to offset the center point and thus line up the fibers unequally with relation to the arc Arc on alignment AOA CURRENT At arc ignition an electromagnetic field is estab lished that exerts force on the fibers bending them out of alignment After initial ignition the force disappears and the fibers should come back into place However if the V grooves or the fibers themselves are dirty they probably won t be able to come back to their original alignment Additionally carbon coated fibers and fibers with small core size are pulled to a significantly differ ent degree than other fiber types See adjacent picture so with these fibers it is particularly likely that the fibers will lose their alignment at arc ignition electrode force at L T a igniting Oa very low current 6 mA carbon coating Increased force because of the conductivity of carbon coating To compensate for this problem the FSU 975 is equipped with the option of setting a low current that can be ignited during fine alignment according to the position that the fibers will be in This ensures that the alignment is done during splicing The default value of the AOA CURRENT param
90. the mode the splicer is in when you just turn it on In Automode the splicer automatically carries out fiber alignment and initiates fusion However if you want to manu ally align the fibers and initialize splicing you can change to Manual mode by pushing the MODE button The mode field will then read to FSU 975 MANUAL MODE To change back to Automode just push MODE again Remember that you can always check which mode you are in during splicer preparation by reading what is displayed in the mode field 2 Select splicing program In this section on Basic Operation we are only going to use the pre defined programs Programs 01 10 as examples but you would follow the same selection procedure if you wanted to load in one of your own programs created through the instructions outlined in the section on Advanced Operation A The first step is to press the ENTER button At this point both the mode and the message field will change The mode field will display the current splicing program and the mes sage field will ask you if you want to change it For the pur poses of demonstration we are going to assume that the current splicing program is program 01 NORMAL SM SM B If you press Yes the message field will then be open for you to enter a new program If you press No you will jump to step F To see a list over the pre defined programs Programs 01 10 you can either look on page 16 of this manual or follow the instruct
91. to what computers do when they ask you if you are sure you want to delete a certain file because copying the source program s parameters will erase whatever parameters were there beforehand Confirm wish to To confirm your desire to copy the source program press Yes overwrite parameters If you press No then the copying will be cancelled As a last precaution the splicer will then ask for the security eee telco E code for the source program if the source program is classi wae fied as Confidential This is to ensure that no one has ac See step 3 cess to programs they shouldn t just by copying them to a new slot To give a source program s security code you follow the same procedure as in step 3 42 ADVANCED OPERATION Program editing E Set or change security Before you start creating or editing your program it is impor tant to stop and determine what type of security you want on it If for example you just copied the parameters out of one of the pre defined programs the security is classified as Open meaning that anyone could come along after you and change the parameters again If you don t want this to happen you can protect your program by making it either Read only or Confidential f G CHANGE SECURITY 9 5 To change security on new program A The first step in changing security is to change the security K CHANGE SECURITY CODE code If you are intending that the program h
92. ucture Parameters Control parameters The control parameters are the parameters that control the specific operations of each of the splicing processes and the following table organizes them accordingly For more detail you can also refer to the preceding section on splicing processes pp 28 33 Additionally you should note that there are no control parameters for the normal splicing process Parameter Function Range Default 5 MAX ECCENTRICITY Max core to cladding 0 00 9 99 um 1 0 um E eccentricity S E ACCEPTABLE OFFSET Max acceptable core offset 0 0 9 9 um 0 3 um XN O Q RTC CURRENT Heating current for inital 6 0 29 9 mA 11 mA RTC images INDEX LIMIT Min acceptable hot fiber index 0 0 9 99 0 4 D THRESHOLD TYPE Comparison method for hot 0 5 0 fiber indexes see also p 31 3 0 Threshold type test E 1 Difference E 2 Left index 5 3 Right index 3 4 Higher index 5 Higher start LOSS FACTOR Adjusts splice loss estimation 0 00 9 99 0 35 x DESIRED ATTENUAT Desired level of attenuation 0 0 29 9 dB 0 S E OFFSET ADJUSTMENT User adjustment added to 9 99 9 99 um 0 C target offset use buttons g Offset as seen in upper view to change sign 3 E ECF FACTOR Surface tension compensation 00 0 99 0 1 5 x factor RTC control parameter 2 PULL 1 Controls first round of pulling YES NO YES 1 Q S PULL 2 Controls second round of pulling YES NO YES 1 S D amp PULL3 Controls third round of pulling YES NO
93. um 1 0 Fusion tim Fusion current 1 10 5 mA dl de Fusion time 2 2 0s Fusion current 2 16 3 mA de Fusion time 3 2 0s Fusion current 3 12 5 mA Left MFD 9 8 um Right MFD 9 8 um Set center position 255 AOA current 0 0 mA Early prefusion No Align accuracy 0 15 um i i d d d d dl Service functions Current test The current test is available only if you are using hot core alignment process Other wise the question does not appear Clean electrodes The current test will not run until after you have gone through the other service functions Electrodes cleaning program runs Splicing mode Operator Number 00 List code 1 00 If you have sufficient splice list data you can print Print splicelist List code 2 00 Skip last splice Clear splicelist Y Ow If you chose the current test you start it at this point by pressing FUSE Enter service mode ee Current test runs Splicing mode 76 Appendix C Service functions flow chart Index A Acceptable offset 29 35 Align accuracy 37 61 Alignment fine 17 19 20 rough 17 18 Altitude compensation for 52 55 AOA current 37 60 Arrow buttons 7 18 44 Attenuator making See Splicing processes attenuator making Automode 12 14 AUX connector 71 Base line tilting 59 Battery 8 charging 62 checking voltage 62 low level warning 62 Binary paramet
94. um fiber Depress Clad fiber Erbium fiber Change fiber type splice oe Invisible core fiber Multimode fiber Press VIEW to get program param eters in screen viewer Normal splicing Hot core alignment Mode field matching Attenuator making Pulling or tapering Continued on next page 74 Appendix C Program editing flow chart Control parameter 1 Depending on the process Control parameter 1 is Max eccentricity E Index limit Desired attenuation or Pull 1 Control parameter 2 Depending on the process Control parameter 2 is RTC current Threshold type Offset adjustment or Pull 2 Control parameter 3 Depending on the process Control parameter 3 is Acceptable offset E Loss factor ECF factor or Pull 3 Change security Follow from same question in the middle of the previous page Continued from previous page Y Edit control parameters This question does not appear if you are using the normal splicing process Edit splicing parameters Y Press VIEW to get program param eters in screen viewer Press VIEW to get program parameters in screen viewer G v Re edit program Press VIEW to get program parameters in screen viewer N Updating parameters Splicing mode Appendix C Program editing flow chart 75 Prefuse time 0 2s Prefuse current 10 0 mA de Gap 50 0 um Overlap 10 0
95. ves Cleaning In the case of both the fiber clamps and V grooves cleanli ness is very important Before starting work each day you should clean them with a cotton swab dipped in propanol or ethanol After you have finished cleaning them you should also ensure that you have not left behind any strands of cotton For V grooves that become heavily dirtied we rec ommend that you clean them in an ultrasonic cleaner Do s and do not s when cleaning Do NOT clean either the fiber clamps or the V grooves with compressed gas The combination of high pressure air and dust acts like a sandblaster on their precision surfaces Do NOT use any sort of hard tool to clean either the fiber clamps or the V grooves ONLY clean with pure propanol or ethanol Changing V grooves The FSU 975 comes with two pairs of V grooves blue and black and based on the kind of fiber you are splicing you will Ch G have to periodically exchange them To do so 1 Open the safety shield 2 Loosen the screw that fastens the V grooves with the hex wrench supplied with the splicer see first adjacent picture Unfasten screw Pull out the old V groove see second adjacent picture Insert the new V groove making sure that the number printed on the V groove agrees with the number indicated on the label behind the operator panel see sample label below 6 Tighten screw that holds V groove Do not fasten too tight Repe
96. x profile See Hot fiber index profile K Key number See Security L Language changing 52 Left MFD 32 37 60 Light intensity curves 59 Live images 27 Loss estimation level 53 Loss factor 30 35 Macrobending 53 Maintenance 5 62 battery 62 electrodes 64 fiber clamps 63 fuses 62 mirror one 66 time table 66 V grooves 63 Manual mode 14 Matchsticking 27 See also Splicing defects Max eccentricity 29 35 Max gap angle 52 Max view angle 52 Message field 7 40 Index TT Mirror one 66 Mode button 7 14 Mode coupling theory 4 Mode field 7 40 Mode field diameters 30 32 60 Monitor controls 7 description 7 Multiple value parameters 57 N Navigation 50 No button 50 Number buttons 50 O Offset adjustment 32 35 On Off button 7 Overlap 36 P Parameter editing review 50 Power connecting 8 input 7 8 supply 8 Pre defined programs See Splicing programs Programs 01 10 Prefuse current 36 Prefuse time 36 Prefusion 17 19 Printer connection 71 Printing splice lists 58 Program editing mode 41 Program parameters 34 general 34 control See Control parameters splicing See Splicing param eters Programming buttons 7 Programs 01 10 See Splicing programs Programs 01 10 Programs 11 50 See Splicing programs editable Pull parameters 33 35 78 Index Q Quantitative parameter values 51 Quick character selection 52 R Real time control RTC 29 32 Rear panel 7 Right MFD 32 37 60 Rough align
97. y during splicing You should check the program parameters before re splicing A number of problems can cause matchsticking The most common causes are excessive fusion currents dirty elec trodes and presence of primary coating left on the fibers You should check these things and re splice Hot image of fiber is the core it is NOT in live images Rather the white line one sees in a live image is nothing more than the result the round fiber acting as a lens and focusing the light shining through it 22 BASIC OPERATION Splice evaluation focused ummm back ground ligh t Live image of fiber Splice protection SE Remove the fiber Once you are satisfied that you have a successful splice you can open the safety shield at which point the splicer will automatically turn off and release the fiber clamps You should then carefully transfer the spliced fiber to the heat oven The simplest way to achieve this procedure without putting unnecessary torsional tension on the fiber is to use the fiber fixtures available for the FSU 975 see adjacent picture Apply the heat shrinkable sleeve Make sure the heat shrinkable sleeve is positioned over the splice area and then carefully place the fiber into the heat oven You should then follow the instructions that come with the heat oven The heat oven is designed to evenly shrink the sleeve over the fiber thereby protecting it without sealing in any bubbles that mig

FSU975 Manual - Equipland Inc.

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