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1. modules Wavelength 1310 1550 1310 amp 1550 1625 1550 amp nm 1625 Plug ins Short distance 8114 SR SRe 8115 SR SRe 8126 SR SRe High resolution 8114 DR 8115 DR 8126 DR Medium distance High dynamic 8114 HD 8115 HD 8126 HD 8117 HD Long distance 8136 HD Very high dynamic 8115 VHD 8126 VHD 8117 VHD 8129 VHD 1310 amp Wavelength nm 1550 eG s sere amp 1550 Plug ins 1625 Ultra High dynamic 8115 UHD 8126 UHD 8129 UHD 8136 UHD Very long distance 8115 VLR 8126 VLR 8129 VLR 8136 VLR 252 User Manual 780000102 09 Characteristics of reflectometry measurements Measurement of distance Measurement of attenuation Measurement of reflectance Automatic measurement Chapter 16 Technical specifications Reflectometer plug in available The specifications of modules 8126 SR SRe DR HD correspond to those of plug ins 8114 and 8115 SR SRe DR HD for their respective wavelengths The specifications of module 8129 VHD are those of modules 8115 or 8117 VHD for their respective wavelengths Dual cursor Distance displayed takes into account the calibration of the refrac tive index of the fiber Index adjustable from 1 30000 to 1 70000 in steps of 0 00001 Resolution of display 1 cm max Resolution of cursor 1 cm max Spacing of measurement points from 4 cm with up to 128 000 acquisition points Accuracy 1 m 10 x distance resolution of sa
2. Signal input socket on the PMD plug in Fig 41 PMD measurement with a 81XXX plug in 134 User Manual 780000102 09 Chapter 7 Polarization Mode Dispersion Measurement Display of results Display of results Spectrum FFT menu key Display of PMD results The key Spectrum FFT enables you to display either the spectrum representing the power in dBm according to the frequency in THz or wavelength in nm according to setup configuration or the FFT curve and PMD information delay amp coefficient according to the Fast Fourier Transform Method The FFT trace represents the PMD delay in ps The PMD results screen presents zones from the top to bottom displaying the file name if the result is stored in the memory characteristics specific to PMD test module name number of acqui sitions used for the statistics Acq wavelength range 1525 1610 fiber number N fiber length in defined unit date and time of acqui sition the trace with the scale and the method in the right top corner the results associated with cursors A and or B according to their selection a message giving the acquisition in progress status or requesting to make the next step the table of results PMD delay and coefficient PMD2 delay and coefficient This table has only one line if statistics have not been selected when configuring the acquisition in the PMD TEST SETUP menu see M
3. 0 ce eee eee 33 User Manual 780000102 09 viii Table of Contents Using an external keyboard mouse and screen touch Options 225 5220 oes Beas a eee ee A 33 Virtual control buttons bar 00 eee eee ee 34 Equivalence between external keyboard and Base Unit 34 Editing text using the external keyboard 35 Functions relating to display of atrace 35 Display of the results on the trace 36 GUISOFSi a2 tate Seater ho RSet a doar ea ot 36 Positioning the cursor 0 0 000 eee ee 36 Selection of the type of cursor 37 Zoom and Shift functions 000 c eee eee 37 ZOOM IUNGIT toad ae peck p edgier a ae 37 Shift function 0 0 00 cee 38 Zoom Auto OTDR 0 0 c eee eee eee eee 38 Full scale OSA PMD AP 200000 38 Overlay trace function 000 eee eens 39 Overlaying several traces stored in memory 40 Display of traces in overlay 2 000 40 Adding traces in overlay 0 eee eee eee 41 Overlaying the current trace 00 41 Swapping overlay traces nnana nannaa 41 Trace resulting from the difference between two traces OSA module prre Sealers Lee eS Ba T A 42 Removing a trace 00 cee eee eee 42 Removing a trace in overlay 00055 42 Removing all the the traces in overlay 42 Quitting the over
4. File Management Storing PMD if you had entered Auto store then the results will be saved automati results cally l If not or if you want to store the results under another name directory etc 1 Click on the FILE key 2 Select Setup with the key Setup Explorer 3 Modify the parameters you want 4 Click on Store Trace The PMD traces are stored with the extension PMD User Manual 780000102 09 139 Chapter 7 Polarization Mode Dispersion Measurement PMD standards and limits Recalling PMD once a PMD file has been stored recall it using the Explorer files 1 2 3 4 Select Explorer with the key Setup Explorer Using directions keys select the directory and then the file to open Click on Load Click on View Tace s or Load Trace Config The selected file is opened For further informations on file management see Chapter 13 File management PMD standards and limits Table 1 List of the appropriate standards and limits for PMD Standards Description Limits Definition and test methods PMD method is provided ITU T G 650 for the relevant parameters i of single mode fibers ITU T Characteristics of a single PMD Coefficient lt 0 5 ps G 652 mode optical fiber cable square km at 1550 nm ITU T Characteristics of a disper PMD Coefficient lt 0 5 ps G 653 sion shifted single mode square km at 1550 nm optical fiber cable ITU T Characteristics of a non zero PMD Coefficient l
5. About this guide xxi Purpose and scope 200 eee eee eee e eens xxii ASSUMPHIONS 2 234 eee eee oe xxii Technical assistance 000 00sec eee eee xxii Recycling Information 2000eeeeeeee xxiii Conventions 00 cece eee eee xxiii Chapter 1 Principles of measurement 1 Principle of reflectometry measurements 2 Information yielded by the measurement 2 Validity of Measurement 0 0000 ce eee eee eee 3 Reflectance 0 00 ccc eee eens 3 Principle of bi directional measurement 4 Principle of WDM OSA analysis 2 5 5 Measurement results 000 cece eee eee 6 DEB analysis i605 cn dosz a dene nion ei a aaae EAE 6 PMD principle 0000 c ananunua 7 Method used to measure the PMD 2 005 8 The principle of measurement of Chromatic Dispersion CD cco renia r ianea wen el noe diel eee es eee 9 Method of CD measurement used by the Base Unit 12 User Manual 780000102 09 vii Table of Contents Principle of optical power and attenuation measurements OFI 200 eee eee eee ees 13 Power measurement 0 00 c ee eee eee eee 13 Attenuation measurements optical link loss 13 Standards and 10 for different types of fiber 15 Chapter 2 Getting started 17 Adapting MTS 5000 series plug ins 18 Installing a plug in in a receptacle and removing i
6. Connect your Base Unit to your fiber before the EDFA on port A and your fiber after the EDFA on port B Click START STOP to perform both acquisitions Results appear automatically in the table EDFA results A table is displayed see EDFA measurements page 116 showing for each channel S In Signal power before EDFA expressed in dBm N In Noise level before EDFA expressed in dBm S Out Signal power after EDFA expressed in dBm N Out Noise level after EDFA expressed in dBm 116 User Manual 780000102 09 Chapter 6 Optical Spectrum Measurement DFB results analysis Gain Power gain from EDFA expressed in dB NF Noise figure from EDFA expressed in dB lt Channel allows to move the cursor from one channel to another both in the trace and in the table of results Saving EDFA results Results are not saved in a file Nevertheless both traces may be stored as regular WDM traces To save your files Select Acq In to save the first file Click on FILE select name and Store Trace Click on RESULTS to come back to the previous screen Proceed the same way for Acq Out Loading EDFA results Results are not saved in a file Nevertheless both traces may be reloaded as regular WDM traces Results will be automatically recalcu lated Select Acq In before loading your first file Click on FILE and Explorer to select your file Load and view your trace The fir
7. 0 0 0 eee ee eee 196 ORL Zero adjustment 20 20055 197 Measurement acquisition 0 00 e ee eee 198 Choosing the fiber to be tested 199 Making the measurement 000 199 Identifying the distant module 199 Displaying results for a FOX automatic measurement 200 Sending a message eee eee eee 201 Ma al ORL s 2 22 edie Bele gee seek aie ale 203 Establishing a reference for an ORL manual measurement 203 Measurement acquisition 00 22200 eee 204 Making the measurement 0s eee eee 204 Display of results for an ORL manual measurement 204 File Management 000 e eee eee eee 205 Storing results 0 0 cee cee 205 Recalling files 0 2 0 0 02 pe ee eee 206 Chapter 11 Multi Test Access Unit 207 Function of the MTAU module 5 208 Connections 0 0 2c eee ee eee eee 208 Configuration 0002 c eee eee 209 Manual mode 2002e cess cece eee ee eens 210 Auto Mode settee lsc ENEN 211 User Manual 780000102 09 XV Table of Contents Configuration of the sequence of tests 212 Performing the sequence of tests 213 Chapter 12 Broadband source BBS 215 Function of the BBS module 2 05 216 Activation procesSS 0 0 cee e eee eee eee 216 Remote interlock connector 0 e008 217 Chapter
8. 00200 e eee eee eee 146 Results Screen nananana anana 147 AP Measurement 000 cece eee eee reese 147 Performing the reference 00 e eee eee 148 Performing a AP measurement 150 Display of AP results 000 cece eee eee eee 152 Trace display ciater 0000 c eee eee eee 152 Result table isc sence setae kth ike eee te ee ee 154 File Management 0 2 0c eee eee eee eee 154 Storing Attenuation Profile measurements 154 Recalling AP files 0 0 sce e ee eee 155 Chapter 9 Measurement of chromatic dispersion 157 Configuring the instrument 158 Configuring the CD test 0 2 0005 158 Acquisition parameters 0 0 cee eee eee 159 Parameters of analysis 0 00 e eee eee eee 160 Results Screen parameters 0 00 0e ee eee 161 Alar S wei dn ee ee ee eee 161 st analysis window 0 0 e eee eee eee 162 Lower wavelength 0 0 0 e eee eee eee 163 Upper wavelength 0 2 e eee eee eee 163 Inc wavelength 0 eee ee eee 163 Standardized to 1 kM 00 cee eee eee 163 UNI ys hee sedated hates staat SE OSE 163 Making a chromatic dispersion measurement 163 Measurement process 000200 cee eee eee 163 Conditions of measurement 000 ee eee 164 User Manual 780000102 09 xiii Table of Contents CD acquisition mode 0 ce
9. Medium Medium averaging 16 samples High High averaging 32 samples Auto The average low medium or high measurement is automatically selected during the reference NOTE An increase of the averaging can improve the dynamic range to up to 5 dB Make Reference Yes Option to select if you wish to perform a reference before the PMD measurement No Default option The instrument automatically sets back to this option after the reference has been performed The date of the last reference is displayed below this field Long term Wait period between two consecutive samples in statistics mode None samples are displayed one after the other Manual requires the user to press the Stop Wait button to start the next sample This mode is used for example if you wish to set the polarizer value between each acquisition Period A new line Wait becomes available when Yes is selected Number of samples Number of acquisitions from 2 to 100 Wait The Wait Period parameter allows to enter a wait period before the measurement start onlyactive if Long Term is positioned on Period Increments of 5 seconds up to 1 minute then increments of 1 minute up to 10 minutes then increments of 5 minutes up to 60 minutes then increment of 1 hour up to 24 hours 1 Does not concern 81XXX modules User Manual 780000102 09 127 Chapter 7 Polarization Mode Dispersion Measurement PMD test setup menu Fiber Fiber length
10. fiteneming Fher fiber C Auto store No Fiber Code Fiber Hdr Increment Cable Structure Operator Comment Fig 80 File Menu example with OTDR plug in Tabs give access to the File menu of each application OTDR OSA Power Meter etc present in the modules and plug ins of the instrument Itis possible to open a file even if the corresponding plug in is not present in the instrument e g OSA file without OSA plug in A new tab then temporarily manages this application When several different applications corresponding to modules or plug ins for different measurements are managed by the Base Unit pressing the FILE key several times in succession changes from one tab to another to give access to the file configuration of the desired application e g OTDR OSA etc See Tabs on page 31 User Manual 780000102 09 Chapter 13 File management File configuration menu File signature The acquisition parameters of the trace contained in the selected file are File information displayed at the top of the screen together with a small scale represen tation of the trace provided it was acquired on a MTS T BERD Base Unit see Mini trace on page 31 Plug in used Resolution Acquisition time Laser Pulse width Refraction index Name of the file 1310 nm 5083cD 10s 64em 100s 10R 1 48500 HD 7210ns 1310 10ns 4 gt 1 BL BAKKE OE Thk a comment for this fiber 18 11 2004 16 51
11. the direction keys can be used to select a directory the key opens the directory selected and closes it when pressed a second time in video inverse to show that it is the current working directory If it Do not confuse Selected with Active A directory may be displayed A N does not have a broken red line round it it is not active User Manual 780000102 09 233 Chapter 13 File management Explorer Function 234 Active working directory Selected the cursor is here CAmMTSepoo D Q harkidish U ees ar 125 Ko A J A 16_cmF iber_8I_Or_S 125 Ko Fig 90 Selected Active File Edition of When a directory is selected the keys offer the following functions directories lt Create Directory gt Creation of a new directory An editor enables entry of its name lt Rename Dir gt Renames the directory selected An editor enables replacement of its current name lt Edit gt Opens a new menu providing functions for editing the directories Copy Cut Paste Delete and Merge NOTE A whole directory with its contents can be copied into another direc tory or on to another storage medium Using the Merge key with the txt files from ORL and LTS measurement results When saving a Manual ORL or LTS measurement result in addition to the LTS and ORL file a txt file is automatically saved for each measure ment type see File Management gt Storing results on page 205 The key Me
12. meee NOTE If the table is displayed first it will disappear when the curve is added If it is desired to display or redisplay the table after addition of the slope curve the latter must first be erased by clicking on Exit or Delete Slope Normatired Siope pata ren oe Do Functions lt Add Slope gt available lt Delete Slope gt lt Trace Table gt 172 User Manual s Wen hoy or lt Add Disp gt depending on the first trace displayed The screen is divided into two parts for the simultaneous display of the dispersion and slope curves or lt Delete Disp gt Returns to the display of the dispersion or the slope alone Displays the trace alone the table alone or both depending on the boxes marked When both are requested the size of the trace is reduced so as to display 8 lines of results in the table 780000102 09 Chapter 9 Measurement of chromatic dispersion Making a chromatic dispersion measurement lt Cursor A Cursor B gt The cursor or cursors selected are displaced along the trace by means of the 4 and p keys The displacement step is as defined in the configuration menu of the CD test Results Inc Wavelength The result corresponding to the position of the cursor on the trace is highlighted in the table lt Lambda gt When the function is activated the lt and p keys cause the table of results which may contain up to 512 lines to scroll across the screen The active
13. 8100 Modules Series Portable modular platform designed for the construction validation and maintenance of optical fiber networks User Manual 8100 Modules Series Portable modular platform designed for the construction validation and maintenance of optical fiber networks User Manual Qy JDSU Notice Copyright Trademarks Manual WEE Directive Compliance Every effort was made to ensure that the information in this document was accurate at the time of printing However information is subject to change without notice and JDSU reserves the right to provide an addendum to this document with information not available at the time that this document was created Copyright 2006 JDSU LLC All rights reserved JDSU Enabling Broadband and Optical Innovation and its logo are trademarks of JDSU LLC All other trademarks and registered trademarks are the property of their respective owners No part of this guide may be reproduced or transmitted electronically or otherwise without written permission of the publisher JDSU is a trademark of JDSU in the United States and other countries Microsoft Windows Windows CE Windows NT MS DOS Excel Word and Microsoft Internet Explorer are either trademarks or registered trade marks of Microsoft Corporation in the United States and or other coun tries Specifications terms and conditions are subject to change without notice All trademarks and registered trademark
14. Edit Number Min 0 100 km Max 300 km parameters The fiber length must be set to provide the PMD coefficient Results Screen 128 parameters Unit Km Kfeet Miles Coupling Strong Weak Alarms None Active Auto Values No Yes Bit rate info Distance unit defined in kilometers Distance unit defined in kilofeet Distance unit defined in miles For classical long single mode fibers For polarization maintained fibers and components A weak coupling includes three peaks for a Fast Fourier Transform Method FFT None selected Selecting this option removes access to the Auto Values and Bit rate info options they will disappear from the screen To include any survey alarms The following fields are then enabled Threshold values are entered manually Threshold values are automatically calculated and adjusted in accordance with the selected information from the Bit rate info table This option gives access to the lines PMD Delay and PMD Coeff A table to the right of this option appears when the Bit rate info is selected This table lists the available PMD standards that can be used To make a choice use the direction arrow keys lt q and gt For further information about PMD standards refer to the table on page 140 PMD Delay PMD Coeff PMD2 Delay User Manual Maximum delay before an alarm signal Maximum PMD coefficient before an alarm signal Maximum second order PMD delay before an
15. Method used to measure the PMD V1 Fig 5 Example of a time delay between two polarization layers The PMD is also referred to as mean value of all Differential Group Delays DGD in picoseconds ps or as the DGD coefficient in ps Vkm The mean DGD causes the transmission pulse to broaden when trans mitted along the fiber generating distortion which in turns increases the bit error rate BER of the optical system The consequence is that the PMD limits the transmission bit rate on a link It is then important to know the PMD values to calculate what are the bit rate limits of the links The method used to measure the PMD is based on the Fixed Analyzer Method which requires a broadband polarized source at one extremity and a polarized variable Optical Spectrum Analyzer OSA at the other extremity Broadband Fixed light source Polarizer SLED Optical Spectrum Analyser OSA Rotatable Polarizer Link under test Fig 6 Fixed Analyzer Method used to measure the PMD The method used to measure PMD is the Fast Fourier Transform Method FFT From the spectrum the mean period of the amplitude modulation is measured 1 This is standardized by the ANSI TIA EIA FOTP 113 Polarization Mode Disper sion Measurement for Single Mode Optical Fibers by the Fixed Analyzer Method User Manual 780000102 09 Chapter 1 Principles of measurement The principle of measurement
16. SpecTran 62 5 1 49600 1 49100 User Manual 780000102 09 Chapter 4 Reflectometry measurements Configuring the reflectometry test Fig 18 Predefined index values Multi Mode Backscatter coefficient User Selects for each wavelength the backscatter coefficient Auto of 99 dB to 50 dB by increments of 0 1dB Modifica tion of the backscatter coefficient K changes the measurements of reflectance and ORL Backscatter coefficients are selected automatically for each wavelength The default values are given in the paragraph Reflectance on page 3 Launch cable at start No Evt1 2 3 Distance All the results are displayed and referenced on the basis of the board of the plug in The results relating to the launch cable are eliminated from the table Attenuation and distances are then measured on the basis of the marker Evt 1 2 or 3 selected Use the Edit Number key to enter a distance Min 0 Max 10 km 32 81 kfeet 6 22 miles or Affect the active cursor value using the Active Cursor Value Factory default value None Result screen Those parameters are valid for all the traces present on the screen Alarm No Active Notes User Manual the alarm function is not active results lying outside the thresholds selected by the user in the Alarm field Max splice Max Connector etc will be displayed in red in the table and the icon will appear at the top right of
17. ating on battery a message indicates that the instrument must be connected to the mains User Manual 780000102 09 21 Chapter 2 Getting started Installing a new version of the software Where and how 22 to obtain the new software Downloading from Internet Installation from a PC Installation from the harddisk of a PC The new version of the software can either be procured on a storage medium CD ROM USB stick memory or CompactFlash memory card from your JDSU Customer Service or can be downloaded from JDSU s internet site www jdsu com When the software is obtained from the Internet it must be saved on a storage medium before the software upgrade of the product can be carried out To do this on the JDSU web site open the file entitled README txt in the folder where the download is located and follow the instructions it contains NOTE Once the upgrade has been loaded from Internet the new version cannot be burned with the CD ROM of the MTS T BERD Base Unit Burn the CD ROM of the PC using CD burner softwares recom mended by JDSU The new versions can be installed according 2 methods from the harddisk of a PC from the CD ROM drive of a PC 1 Connect the MTS T BERD Base Unit into mains with the AC plug and switch it on 2 Connect the MTS T BERD Base Unit to the PC by an Ethernet link NOTE Use a cross over if the Base Unit is directly connected to the PC ora direct cable if the
18. cece eee ee 66 Manual measurements 220000ee ee eeeee 66 Measurements of Slope 0c ee eee eee 67 Result of slope measurement 255 67 Deleting a slope measurement 68 Performing splice and reflectance measurements 68 Two points method 00 20 eee eee 68 Five points method 0 0 cee eee ee eee 69 Manual measurement of ORL 000000 70 ORL on a saturated trace 0 20 e eee eee 70 Memorization of the position of events 71 Fault Locator Mode 22000e eee eeeee 72 FUNCHOMN weh han det Calas kal ae eae E a maa Ale tek 72 Choosing the function 0 0 0 c eee eee eee 72 Test configuration 00 00 cee eee eee 72 Starting the test 0 2 20 eee eee ee 73 File Management 200s cece eee eee eee 75 Storing OTDR measurements 2 00055 75 Recalling OTDR files 0 00 cece eee eee 75 Chapter 5 Bi directional OTDR 77 Definition of terms used 2200002 ee eeeee 78 Description of the measurement 78 Summary of the automatic operation procedure 79 Configuration of bi directional measurement 80 Acquisition parameters 00020 cece ee eeee 80 User Manual 780000102 09 x Table of Contents Measurement parameters 20002ee eee eee 81 Results Screen parameters 00200e ee eaee 81 Config
19. singlemode fibre and 1300 nm for a multimode fibre the attenuation threshold corresponael from 2 to 20 dB Modify the value using the direction keys or the numeric keypad The Auto position is recommended No No launch cable used Distance Manually enter the value using the numeric keypad with the Edit Number key Min 0 km Max 10km 32 81 Kfeet 6 22 miles or Set the active cursor value using the Set Cursor Distance key Fiber refractive index You can choose one of the predefined value given for some cables see table page page 48 manually define a refractive index either defining for each wavelength a refractive index between 1 30000 and 1 69999 The selection of an index modify the section AB value real distance between the cursors A and B or if you know the real distance between cursors A and B entering this value in the Section AB line to know the refractive index of the fiber This distance selection allows to display the indices The extremes values of the distance are given by those of the indice 1 30000 a 1 70000 Select the bend maximum value in dB Distance unit km kfeet miles Push the START STOP button The test configuration starts automatically Then a baragraph indicates the test progress and the number of acquisitions done You can stop the test at any time pushing the START STOP button User Manual 780000102 09 73 Chapter 4 Reflectometry measurements F
20. take adequate measures 268 User Manual 780000102 09 Options and accessories This chapter describes all the accessories and options available with the MTS T BERD series The topics discussed in this chapter are as follows References of measurement plug ins on page 270 User manual references on page 273 References of optical connectors and adapters on page 274 User Manual 780000102 09 269 Chapter 17 Options and accessories References of measurement plug ins References of measurement plug ins OTDR plug ins Reference Short distance 34 dB 1310 nm E8114SRe Short distance 32 dB 1550 nm E8115SRe Short distance 34 32 dB 1310 1550 nm E8126SRe Short distance 35 dB 1310 nm E8114SR Short distance 33 dB 1550 nm E8115SR Short distance 35 33 dB 1310 1550 nm E8126SR Medium distance 37 dB 1310 nm E8114DR Medium distance 35 dB 1550 nm E8115DR Medium distance 37 35 dB 1310 1550 nm E8126DR Long distance 42 dB 1310 nm E8114HD Long distance 40dB 1550 nm E8115HD Long distance 42 40 dB 1310 1550 nm E8126HD Long distance 40 dB 1625 E8117HD Long distance 42 40 40 dB 1310 1550 1625 nm E8136HD Very long distance 44 dB 1310 nm E8114VHD Very long distance 44 dB 1550 nm E8115VHD Very long distance 44 44 dB 1310 1550 nm E8126VHD Very long distance 44 dB 1625 nm E8117VHD Very long distance 44 44 dB 1550 1625 nm E8129VHD Ultra long distance 1550 nm E8115UHD Very long distanc
21. Broadband source BBS This chapter describes the function of the BBS Broadband Source module and its use The topics discussed in this chapter are as follows Function of the BBS module on page 216 Activation process on page 216 Remote interlock connector on page 217 User Manual 780000102 09 215 Chapter 12 Broadband source BBS Function of the BBS module Function of the BBS module The BBS is a broadband source covering several wavelength ranges from 1480 to 1640 nm for BBS1 and from 1260 to 1640 nm for BBS2 It is used to measure the attenuation profiles and the PMD of optical fibers Activation process 216 To use the BBS function go into the SYSTEM menu and select the BBS icon E using the key Then go into the SETUP or RESULTS menu the same page is displayed for this plug in to access the screen of the BBS module Press the Laser On key Entrer the password 4877 using the direction keys o Press the Confirm button to valid the password Ez D awrina ce 1480 1640 i nm a Password 4877 Valid Lowi ens Fig 78 Validate the password User Manual 780000102 09 Chapter 12 Broadband source BBS Remote interlock connector The laser is on and the screen displays the icon Press the Laser Off On key to deactivate or activate the laser mw NOTE To lock the instrument simply un select the BBS module Any user coming next will be pro
22. F or Level Min P Max P Mixed Wavel Min L Max L User Manual 780000102 09 111 Chapter 6 Optical Spectrum Measurement Table of results 112 Channel sort The channels can be classified in the table in ascending order of frequency or wavelength level or SNR To modify this order Press the Table Contents key then Sort Press Freq Sort or Wavel Sort according to the units selected Level Sort or SNR Sort Successive addressing of channels according to the sort type selected On the trace and in the table it is possible to move the cursor from one channel to the next in the selected sort order To do this Use the key Cursor A gt lt Cursor B to choose the cursor A or B to be used on the trace Press the Channel key Press lt and to move the cursor to the following or preceding channel Table notes A note of not more than 40 characters entered by the user may be asso ciated with each channel NOTE Each note is associated with a channel Consequently if the channel is deleted the note the will be deleted too NOTE These notes appear in the table only if they have been validated in the SETUP menu on the Table notes line Result screen Similarly this option must be confirmed in order to be able to create a note To enter a note Inthe table select the channel Press the Table Contents key then press Notes Enter t
23. OSA analysis The sum gives the bi directional or average splice loss value S1 52 S 2 Bi directionnal measurement consists in performing a measurement from the extremity of fiber A then another measurement from the extremity of fiber B finally get events of both traces and calculate the average for all slope splice and reflectance measurements Principle of WDM OSA analysis WDM Wavelength Division Multiplex technology is a very effective means of increasing the transmission of fibers as it demands neither the installation of new links nor any increase in transmission speed The data are transmitted along the fiber at different wavelengths each wave length or channel transmitting a signal The channels are defined according to the the G 692 recommendations of the ITU T This technology demands new measurements since it is important during the installation and maintenance of WDM systems to check the following parameters 1 Presence of the channels at the corresponding wavelengths with no drift 2 Correct channel power levels without power variation 3 Satisfactory signal to noise ratio SNR its value is obtained by measuring the ratio of channel peak power to the noise power level of the ASE signal to the right and or left of the carrier As a general rule the noise measurement point chosen is the calculated mid point between two adjacent channels The noise power level measured is converted to a stan
24. Zoom on one of the channels as shown previously Press the Trace gt lt Channel key Use the and keys to move the zoom on to the successive channels lt Graph gt lt Table gt key This key offers a choice from the following displays Trace alone main display of the trace with a single line of the table at the foot of the page Trace Table display of trace reduced in size but followed by 5 to 8 lines of the table of results Table display of the table alone User Manual 780000102 09 107 Chapter 6 Optical Spectrum Measurement Trace display functions 108 fe Number of acquisitions Mini trace display q Distance StoN_ File name Alarm result Name of module Resolution Signal threshold Direction ioe ers a A a ATT tee ht Oma Pw hk ae Emann ee er Channel alos neon A f hi f A h hauls of the channel D f j fi if i teeeetes es mar w yA h fj WAV 1 ee eyo AN 94 yyy ONUN V UVVU VN y ANA VER SRR RARER ENADE E EA na a pias nr ave ms ake vA alu mt Tahir antem E 2 lf uty 7 Wavelength and power difference between cursors A and B wavelengths and power at point of trace referenced by cursors A and B Fig 32 Example of OSA test result with grid Channel detection threshold On the trace some peaks corresponding to noise could be mistaken for channels It is therefor
25. cursor then follows this displacement on the trace 2 ee ee tees Displacement of cursor table Fig 58 Example of display of the table Alarms Results lying outside the thresholds selected by the user in the Alarm field Max dispersion will be displayed in red in the table and the icon will appear at the top right of the screen If all the results lie within e thresholds no result is in red the icon becomes a User Manual 780000102 09 173 Chapter 9 Measurement of chromatic dispersion Making a chromatic dispersion measurement Measurement of The CD method provided by the Base Unit allows to measure the CD CD on a section only of the entire link but also of sections of the fiber This feature may be useful if 2 different types of fibers are used on one link To make such a measurement the section must be separated by specific events such as reflective events or Fresnel like connectors The different measurements must be performed with the same mod AN ule Acquiring a trace The process to measure the CD results of a section located between for CD event X and Y is as follows measurement on a lectin the S M Secti section Select in the SETUP menu Measure area Section Select for the window analysis the distance to the X event Perform a CD measurement Save the trace FILE key see File Management on page 176 Select for the window analysis the distance to the Y event SET
26. iiris Tocsin ene ees 244 How to use the default macro 00085 244 How to set a macro as default 005 244 Macro playback 2000 s eee e eee eee 244 Storing a Macro 0 2 ce eee es 245 Chapter 15 Printer 247 Function of the printer module 248 Exposing the printer 0200 cece eee 248 Releasing the printer back into the module 249 Loading a new paper roll 2000 eee ee eee 249 Setting up the printer 0 0005 250 User Manual 780000102 09 xvii Table of Contents Printing a page cece eee eee 250 Chapter 16 Technical specifications 251 Reflectometer plug in available 252 Multimode OTDR plug in 0 0 e eee eee ee 252 Single mode modules 0 00e eee eeeeeee 252 Characteristics of reflectometry measurements 253 Measurement of distance 05 253 Measurement of attenuation 253 Measurement of reflectance 253 Automatic measurement 20 e eee 253 Manual Measurement 20 eee eee 254 Typical specifications of OTDR plug ins 255 Classes of the lasers of the OTDR plug ins 257 Ranges ir r shee ck hipaa a a Vane Ma eat eae Be 257 Dimensions and weight of OTDR measurement plug ins 259 WDM plug ins 2 2 0 2 ve ee eee eee 259 Typical specifications of WDM plug in
27. in progress The trace acquired is displayed in real time An indicator of the state of the connection Good Bad is displayed below the trace meee NOTE If the connection is bad check and clean the connector or the jump ers To terminate or interrupt an acquisition in real time mode press the START STOP key Connection quality indicator The connection quality indicator gives the following information State Connection Good The connection is OK Bad Possible causes of a bad result There are several connectors close to the external connector of One of the connectors is dirty or badly connected Replace the No fiber is connected the Base Unit launch cable make the connection again properly or clean the connector of the OTDR or of the jumper 52 If the state of the connection is bad it is still possible to carry out a measurement but the results will not be very reliable User Manual 780000102 09 Chapter 4 Reflectometry measurements Acquisition Real time display 19 01 2004 1654 P alim 130W P used SOW 22m 10700 AB inamm Taran Resolution 3z em 4 Average Mode Fig 19 Example of acquisition in real time During an acquisition in real time you can modify the acquisition param eters without returning to the SETUP menu To do this press the Acqui sition Param key you can then use display keys to scroll through the possible va
28. orto compare both curves get for each way of propagation in the o Back mode For this purpose the Base Unit possesses an overlay memory which can store the current trace for comparison with further traces to be acquired subsequently orreference traces previously saved on floppy disk or CD ROM or in the internal memory for comparison with the current trace or traces of different wavelengths for comparative purposes OTDR User Manual 780000102 09 39 Chapter 3 Graphical User Interface Overlay trace function amp Tor P alim 130W P used SOW renee 1310 nm 50265A 30ns 5 0s IOR TS 500 fibre101310_nm30ns 35 C1 0rjAq ie 4 705 95m 11 915 0B B 1159 44m 14 145 dB 4 B 453 49m 2 230 0B Cursor A Cursor B idGraph iTable Full SS Scale Set Event 1 ie 07300735 074045 Km Reflect dB Slope dB km Lengthm T Loss dB A Advanced Ce Fig 15 Example of overlaid traces Overlaying To display up to 8 traces from the memory deleting the current trace or several traces traces already loaded storedin memory N Display of traces in overlay Press the FILE button On the Menu Explorer key select Explorer Select the files of the traces for display see Multiple selection of files page 236 Press the Load key Press lt View traces gt or Load traces config as the traces are loaded they cease to be highlighted in the list of files When loading
29. selected User Manual 780000102 09 235 Chapter 13 File management Explorer Function Multiple selection of files A Commands relating to files 236 It is possible to select several files simultaneously to move them delete print or copy them on to another medium or to display the corresponding traces in overlay see Display of several traces in overlay on page 237 To do this press after each selection The files selected appear in video inverse To deselect a file place the cursor on the name of the file and press the key amp again NOTE If a mouse is used click on a file to select it and click again to dese lect it If no file has been selected by the amp key the file where the cursor is positioned is taken as selected On the other hand if a file has been selected with the e amp key and the cursor is on another file the latter is not selected When a file is selected the keys offer the following functions lt Load gt Opens the sub menu for display of traces See chapter Loading files and displaying traces on page 237 lt Select all gt Direct selection of all the files in the directory After this key has been pressed its name changes to lt Deselect All gt so that the operation can be cancelled if necessary lt Rename File gt Opens the editor to modify the name of the file lt Edit gt Displays a sub menu to copy cut paste delete or merge one or more files lt S
30. the event to be added is too close to an existing event the icon appears on the trace and the table but no measurement is carried out to obtain the results for this event a manual measurement is necessary Alle End of launch cable the attenuation and distances are measured on the basis of the corresponding marker B The distance of the event from the beginning of the fiber in metres or kfeet or miles The attenuation due to the event in dB The reflectance of the event in dB or the ORL result if an ORL measurement has been carried out The slope before the event in dB km dB kft if it can be measured The length of the section that is to say the distance between the marker of the event and the previous marker The total attenuation of the fiber total dB loss in dB The table of results is interactive and reflects the measurements in progress Any operation carried out on the trace is immediately entered in the table so that you can see the result The types of events are detected automatically as a function of their optical signature This can sometimes lead the system astray if reflection from a connector is too strong end of fiber if a splice has a very low insertion loss slope etc Similarly some types of events cannot be recognized automatically from their signatures for example couplers multiplexers etc For this reason it is advantageous in some cases to be able to change the type
31. the user can display indicators to evaluate the uncertainty of the result This function must be validated in the SETUP menu on the Notes line The notes are displayed under the selected event in the results table Uncertainty of results The following cases are possible Indicators concerning attenuation measurements 2c Result of a manual measurement between the reference and the manual cursor using the 2 cursors method 5c Result of a manual measurement using the 5 cursors method manual The attenuation displayed is a global result for Fresnel reflections Global which are not sufficiently separated User Manual 780000102 09 63 Chapter 4 Reflectometry measurements Automatic measurement and detection Close evts As several events are too close together only the attenuation of the last one is displayed Indicators concerning measurements of slope Few pts Measurement of slope by the least square approximation method without using many points of acquisition 2 points Measurement of slope by the 2 point method meee NOTE The SETUP menu Notes line enables display of notes of uncertain ties or of neither the one nor the other Notes cannot be displayed at the same time as uncertainties Automatic measurement and detection 64 Automatic mode enables rapid detection of all the faults in the trace The faults detected are then measured and identified o
32. x x K x x 260 km x x K x x x x x KX K KL KI xX x x x x x 380 km xX K K KK x x x x x x 5 km 10 km 10 ns Ranges for VHD and UHD plug ins 30 ns 100 ns X 300 ns 1us 3 us 10 us 20 us 20 km 40 km 80 km x x x x x 140 km x K K x x x x x lt x x x 260 km xX K K KK KY KL Xx x K K LK x x 380 km x K K KL KL xX x x x x x x x x x x 258 User Manual 780000102 09 Chapter 16 Technical specifications WDM plug ins Ranges for VLR plug ins 3 ns 30 ns 100ns 300ns 1us 3 us 10 us 20us 5 km x x 10 km xX x x 20 km x x x x x 40 km xX x x xX x x x x 80 km xX x x xX x x x x 140 km x x xX x x x x 260 km X x xX x x 380 km x x Dimensions Weight approx 500 g 1 1 Ibs and weight of EERE OTDR imensions in mm without front panel measurement Width 120 plug ins Height 27 Length 211 WDM plug ins Typical Typical specifications measured at 25 C unless otherwise indicated specifications of WDM plug ins Plug in Plug in 81WDMPMD 81WDM Module module S C L O E S C L Wavelength Range 1485 1640 nm 1260 1640 nm Duration of sweep in real time 1 5s 3s User Manual 780000102 09 259
33. 13 File management 219 File configuration menu 0200 cece eee 220 Managing tabs 2 0 2 iodo eee Pave dee ee 220 File signature 2 2 0 cee ee ee 221 File information 00 00 000 cece eee eee 221 Current directory 0 000 e cece eee 221 Rules for naming files 000 00s eae 222 Name of a file 2 0000 223 Auto Store si te ea ale eas a Ae ee ah Aa eee 223 Fiber information 000 0c eee eee ee eae 223 Biber Name ce a5 ac cet oa ete eae oe Ba eee 224 FIDE COdG i ntes Sashes wie ia pod ae peed 224 Incrementing fiber number 4 224 Link description 00 0 0 ea eee eee ee 225 Direction 4 sca eee eae ee eee 225 OTIN ia hE EREE E sek aod en Moe eh OF oa Gels tee 225 Extremity cer fis eet eee arene es aE wee 225 Different extremities 2 200000055 225 Cable structure 00 cece eee eee 226 Operator ee dree Sake ota gen eke ee dee ee 228 Comment zres sto taco eee ee ee eee 229 File expedition 1 2 0 0 poia aaa nE eee 229 Buttons on the right of the screen 229 Explorer Function 000 eee e eee eee 230 Description of the explorer 0 00 e eee eee 230 Storage Media 0 cee eee 231 Storage media built into the Base Unit 231 External USB storage media 2 0005 231 Standard Compact Flash card 8000 platform only 232 Remote Base Unit and dat
34. 4 wavelengths if the markers have not been automatically placed on the basis of the result screen press the Config key to position them manually User Manual 780000102 09 Chapter 9 Measurement of chromatic dispersion Making a chromatic dispersion measurement Wavelength of the active trace Information The configuration screen of the markers displays the general information see Information always displayed on page 166 together with the infor mation specific to the positioning of the markers displayed for the markers The OTDR traces displayed in a window and showing markers The distance with respect to the origin of each marker for each trace The difference of each marker from the reference marker The OTDR mini trace to the left of the bar Specific keys with which the markers can be modified To position a marker Select the trace on which you wish to position the marker by pressing the Select Lambda key repeatedly until its wavelength is displayed in the bar To position the marker automatically at the summit of the reflec tive event of the active trace press the key Auto Marker To position the marker manually place the active cursor at the desired position then press Manual Marker User Manual 780000102 09 169 Chapter 9 Measurement of chromatic dispersion Making a chromatic dispersion measurement Delay dispersion and slope results Information displayed for the 170
35. 78 Configuration of bi directional measurement on page 80 Performing a bi directional measurement on page 82 Trace display functions on page 87 OEO Result table on page 89 Automatic measurement and Addition of markers in OEO page on page 89 File management on page 90 Test of a cable on page 91 Troubleshooting on page 91 User Manual 780000102 09 77 Chapter 5 Bi directional OTDR Definition of terms used Definition of terms used Master Slave unit The master unit is the Base Unit that initiates the measurement at one extremity of the fiber The slave unit is the Base Unit connected on the other extremity of the fiber and connected to the master unit via the data connection Local remote unit These terms are used in the Process Display page see Process page display page 84 Each unit is considered Local on its own screen mw NOTE These terms are to be distinguished from the measurement direction and extremities of the fiber see Fiber information page 223 Description of the measurement mw NOTE The measurement principle and methods used are described in Prin ciple of bi directional measurement page 4 Thanks to the software option OEO OTDR bi directional measurement can be fully automatic A minimum of two fibers is required Two Base Units equiped with the talkset option and an OTDR plug in are linked at e
36. Base Unit is connected to the LAN 3 On the PC unzip the upgrade file in a directory such as C 8000_Base_Upgrade 4 Opena DOS console by selecting Windows gt Start bottom right of the PC screen gt All programs gt Accessories gt Command prompt Then type the command subst N C upgrade Close the DOS console User Manual 780000102 09 Chapter 2 Getting started Installing a new version of the software This command will create a virtual drive N N is an example 7 Run TFTPD32 exe note the Server Interfaces address which appears in the TFTPD32 window 8 Run FTP server exe An error message will appear click on OK The window Pablo s FTP server is displayed Click on the green arrow or select menu File gt Start 9 On the Base Unit press the SYSTEM key then System Menu in Utility gt Upgrade Parameters gt Server adress enter the IP address previously noted see 7 above 10 Quit the System menu and then press in succession Expert Tools gt Software Upgrade gt From Ethernet The message Indicate IP address of PC server appears 11 Click on Confirm The list of the software versions available on the PC is displayed next to the versions installed on the Base Unit Ver ean Mey a geen Ae le mene o oaar More recent version on the PC than on the Base Unit Less recent version on the PC than on the Base Unit e Identical version on the PC and on the Base Unit 12 Click o
37. Bi directionnal OTDR principle of measurement 4 C CD acquisition parameters 159 analysis parameters 160 auto acquisition 164 Configuration 158 detection end of fiber 167 end of acquisition 166 manual acquisition 165 measurement conditions 164 measurement on section 174 measurement process 163 placing markers 168 results sreen parameters 161 source function 179 standards and limits 176 CD ROM burning 232 Channel filtering OSA 113 Coefficient of dispersion 10 11 12 Coefficient of reflection 3 4 Commands external keyboard 33 CompactFlash 26 Connection 275 quality 52 Connectors references 274 Cursor 2 cursors method 68 5 cursors method 69 movement 36 resolution 253 selection 37 D Data transfer 232 DFB analysis 6 configuration 118 measurements 118 results 119 Distance specif OTDR measurement 253 E EDFA configuration 114 measurement 115 results 116 Event macro 241 245 Event CD 163 165 169 170 Event OTDR 58 icons 60 External Keyboard 33 F Fault Locator Bend 73 74 configuration 72 function 72 test 73 Fibers standards 15 File configuration 220 User Manual 780000102 09 Index expedition 229 naming 222 G Ghosts 50 H High sensitivity WDM 98 Index of refraction specifications 253 L Launch cable 49 Lower amp upper thresholds OFI 186 Macro adding interaction 242 calling 240 Default 244 File 241 Playba
38. Configuring the reflectometry test 48 Macro Bend Wavelength select the wavelength for the macro bend No 1310 1550nm 1310 1625nm 1550 1625nm Refraction index Choice of group refraction index of the whole fiber User Either define for each wavelength 1310 SM 1360 1510 SM 1550 SM 1625 SM a refraction index of 1 30000 a 1 69999 The selection of an index alters the value of the section AB actual distance between cursors A and B or if the actual distance between the cursors A and B is known enter its value under Section AB to establish the index of the fiber Selection of this distance causes the display of the indices The extreme distance values are given by the index values 1 30000 a 1 70000 Predefined index Itis possible to choose one of the predefined values given for certain cables The corresponding indices given in the table below are repeated on the screen Wavelength 1475 1480 nm i 1310 SM 1510 1550 1625 SM ATT SM 1 46600 1 46700 Corning SMF 28 1 46750 1 46810 Corning SMF DS 1 47180 1 47110 Corning SMF LS 1 47100 1 47000 Corning LEAF 1 46890 1 46840 Fitel Furukawa 1 47000 1 47000 Lucent Truewave 1 47380 1 47320 SpecTran SM 1 46750 1 46810 Litespec 1 46600 1 46700 Fig 17 Predefined index values Single Mode Wavelength 850 MM 1300 MM nm Corning 62 5 1 50140 1 49660 Corning 50 1 48970 1 48560
39. Loading a new paper roll Releasing the To release the printer hold the module while you push on the lever printer back into the module It is important to hold the module while you push on the lever If you A N don t you may stuck your finger and or damage the internal printer Loading a new paper roll In order to load a new paper roll proceed as follows 1 Expose the printer outside of its module see Exposing the printer page 248 2 Setthe lever to position A 3 Insert the paper roll as shown on figure Loading paper in the printer page 249 Fold the paper to ease loading Ensure paper is enrolled as shown on figure Loading paper in the printer page 249 Pull paper through opening in panel Reset the lever to position C 5 Ensure paper is unrolled as shown 4 Fold the paper to ease loading 2 Lever in position A 3 Push in opposite direction Spare paper roll may to insert the paper roll be inserted here Fig 94 Loading paper in the printer User Manual 780000102 09 249 Chapter 15 Printer Setting up the printer Setting up the printer The printer must be correctly configured in the setup menu Printer must be set to Internal or Internal compressed The Printer icon must be activated in the SYSTEM screen such as shown in figure Printer activated page 250 For both these requirements you may refer to the 8000 Base Unit manual Fig 95 Printer activated Printing
40. Mini trace Direction of measurement Date of the acquisition of t 72 Bia Extremity info Cable end info able Id Fiber Id Fiber Code Fig 81 Example of signature of an OTDR file in the File Menu Current directory The Dir line of the menu shows the directory in which the traces will be A stored This line can also be used to change the active storage medium direc tory To do this launch the directory editor by means of the key gt into account Change of medium and the creation and or deletion of directories can only be done through the file explorer see Explorer Function on page 230 The directory edited must exist otherwise it will not be taken ot plore When recalling a trace fiber parameters are shown in the signature but not necessarily in the FILE menu The FILE menu is used to edit parameters for the current or next acquisition or to modify the signa ture of a stored trace only User Manual 780000102 09 221 Chapter 13 File management File configuration menu Rules for naming In the name of the file it is possible to program automatic inclusion of files parameters such as the name of the fiber fiber code identifiers of the cable its origin its end or the measurement parameters direction reso lution wavelength pulse length The lt Filenaming gt line shows the current filenaming rules and can be used to modify them To edit or modify these rules Go to to the Filenami
41. No no configuration transfer the measurement is stopped 92 User Manual 780000102 09 Chapter 5 Bi directional OTDR Troubleshooting Acquisition and files configs Yes The SETUP and FILE config are different Transfer config urations are transferred and to remote applied on the remote Base Unit No no configuration transfer the measurement is stopped User Manual 780000102 09 93 Chapter 5 Bi directional OTDR Troubleshooting 94 User Manual 780000102 09 Optical Spectrum Measurement This chapter describes the different stages in carrying out a spectrum analysis of an optical signal or analyzing effects from an optical amplifier EDFA type by a Base Unit equipped with a 507XXX series module and a 507Ext extension card or with a81WDM 81WDMPMD module or with the OSA 16X OSA 20X OSA 30X series The OSA 16X OSA 20X OSA 30X are only available on MTS T AN BERD 8000 platform The topics discussed in this chapter are as follows Configuration of the instrument on page 96 WDM OSA test configuration on page 96 Acquisition on page 106 Trace display functions on page 106 Table of results on page 110 Channel filtering on page 113 EDFA results analysis on page 114 DFB results analysis on page 117 File Management on page 120 1 Erbium Doped Fiber Amplifier User Manual 780000102 09 95 Chapter 6 Optica
42. Reference PMD Plug in Band S C L E81PMD PMD AP WDM plug in Band O E S C L E81WDMPMD User Manual 780000102 09 271 Chapter 17 Options and accessories References of measurement plug ins 272 PMD accessories Reference Optical variable polarizer not necessary for 81 XXX plug ins EOVP 15 Broadband source for PMD measurements EOBS 15 CD plug ins Reference OTDR CD module 1310 1480 1550 1625 35 dB E5083 CD E50otdrExt CD options Reference Sources 1310 1480 1550 1625 DFB E508X LS CD accessories Reference Termination connector FC PC amp APC ETERM CD FC Termination connector SC PC amp APC ETERM CD SC Termination connector ST PC ETERM CD ST Termination connector E2000 HR amp HRL ETERM CD E2000 MTAU plug ins 8100 series Reference Multi Test Access Unit offering 2 input ports E81MTAU2 Multi Test Access Unit offering 3 input ports 1 mirror E81MTAU3 OFI plug ins Reference 1310 1550nm OFI plug in module standard power E81260FI1 1310 1550nm OFI plug in module high power E81260FI2 1310 1550 1625nm OFI plug in module standard power E81360FI1 1310 1550 1625nm OFI plug in module high power E81360F12 1310 1490 1550nm OFI plug in module standard power E81320FI1 1310 1490 1550nm OFI plug in module high power E81320F12 User Manual 780000102 09 Chapter 17 Options and accessories User manual references OFI Module option ORL option for OFI
43. Reference is set to Yes in the configu ration menu meee NOTE When a reference is performed acquisition parameters are not taken in account except for those concerning averaging 6 Press the button START STOP to start the reference of the broad band source To display the results press the button RESULTS Once the reference is correct PMA measurement may take place ANSE A52 ree 757d 8 INSAN re sve AB 0 00 ree 0 0 42 ub A m u in x e at n pr p kad 10 1 rn isad wo 10 ven veh 1a ro Fig 39 Example of a correct reference for a broadband User Manual source 780000102 09 131 Chapter 7 Polarization Mode Dispersion Measurement Performing a PMD measurement with a 5073XXX plug in or OSA 16X OSA 20X OSA 30X series A bargraph shows if the source power level will allow to perform PMD measurements correctly Weak ee Strong If the reference measurement does not provide a correct result check the following points Error message Possible problem Possible solution Acquisition impossible Auto calibration is not Wait for the calibration to be Hit any key to continue completed terminated Signal level too low The OBS 15 is not Press the ON OFF button to Check source and con switched on switch on the OBS 15 verify nections if Make reference is still set Hit any key to continue to Yes then repeat step 6 The OBS 15 battery is Check if the LOW BATT red too low led is
44. Shift functions to position or delete markers The cursors A and B are represented by vertical lines of different colors in a solid line if the cursor is selected in a dotted line if the cursor is not selected When a trace is displayed the key lt Cursor A Cursor B gt can be used to select one or both cursors The direction keys lt and move the selected cursor s along the trace Above the trace are shown the co ordinates of the points of intersection of the cursors A and B with the trace together with the distance between the two points When a selected cursor touches the right or left hand edge of the screen the trace starts to scroll horizontally to maintain display of this cursor User Manual 780000102 09 Selection of the type of cursor Zoom and Shift functions Zoom function Chapter 3 Graphical User Interface Functions relating to display of a trace If an unselected cursor has been moved off screen by a zoom it can be brought back on to the screen by selecting it and then pressing one of the direction keys or It will then appear on whichever edge of the screen is closest to its position When the cursor function is selected the keys A and wW move the trace vertically Two types of cursors can be defined 1 Cursor on X only a vertical bar is present 2 Cursor on X and Y there is a vertical bar and a horizontal bar The intersection between these two bars is placed on the trace To
45. Single mode Universal OTDR and WDM Connector Universal PC Connector with FC adapter EUNIPCFC Universal PC Connector with SC adapter EUNIPCSC Universal PC Connector with ST adapter EUNIPCST Universal PC Connector with DIN adapter EUNIPCDIN Universal PC Connector with LC adapter EUNIPCLC Universal APC Connector for SM only with FC adapter EUNIAPCFC Universal APC Connector for SM only with SC adapter EUNIAPCSC Universal APC Connector for SM only with ST adapter EUNIAPCST Universal APC Connector for SM only with DIN adapter EUNIAPCDIN Universal APC Connector for SM only with LC adapter EUNIAPCLC 1 A connector fixed or universal must be specified at time of order of the plug in Additional Adapters for Universal Connectors Universal FC Adapter EUFCAD Universal SC Adapter EUSCAD Universal ST Adapter EUSTAD Universal DIN Adapter EUDINAD Universal LC adapter EULCAD 1 Interchangeable in the field User Manual 780000102 09 Index A Accessories 269 Adapter reference 274 switch 20 types 20 Attenuation 13 63 183 Attenuation profile acquisition parameters 146 configuration 144 measurement 147 measurement parameters 146 measurement procedure 150 results display 152 results table 154 Backscatter coefficient 4 49 Battery on microprocessor board 21 BBS activation 216 function 216 remote interlock connector 217 Bend 47 59 User Manual 780000102 09
46. There are different methods for measuring chromatic dispersion The Base Unit measures the delay of propagation of pulses along the fiber due to specific reflective events such as connectors Fresnel doing this for four wavelengths 1310 1480 1550 amp 1625 nm One of these 4 measurements is chosen as a reference for calculation of delays Fiber under test 12 1 Delay On the basis of the 4 results obtained the Base Unit defines the curve representing the delay as a function of wavelength by using one of the following numerical approximation algorithms Quadratic A BA CA2 parabolic curve Sellmeier 3 term A BA2 CA 2 Sellmeier 5 term A BA2 CA 24 D1A4 EA 4 It then calculates the drift of this curve in order to obtain the coefficient of dispersion D as a function of wavelength It then calculates the drift of this last curve in order to obtain the disper sion slope User Manual 780000102 09 Chapter 1 Principles of measurement Principle of optical power and attenuation measurements OFI Delay drift gt Coeff of drift D Dispersion ps dispersion slope S A So TETE 1310 1480 t 155016252 nm do A i Wavelength corresponding to E dispersion Fig 8 Example of curves obtained by quadratic approximation Principle of optical power and attenuation measurements OFI Power a power meter is all that is needed to measure emitted or received measurement Power to mea
47. Unit Km Distance unit defined in kilometers User Manual 780000102 09 Chapter 8 Attenuation profile AP Measurement Kfeet Distance unit defined in kilofeet Miles Distance unit defined in miles Results Screen Wavelength Range Full Displays results along the full band C L Band Displays results along S C L bands C LBand Displays results along C L bands Manual Displays results between 2 user defined wavelengths The user must then select the wavelength to lt start gt with and the wavelength to lt end gt with Modify Inc Wavelength if necessary in the mode edition menu This parameter is used to define how many points shall be considered in the table and spectrum analysis Normalized to km No The AP result shall be provided in dB Yes The AP result shall be provided id dB km result calcu lated according to fiber length and total attenuation AP Measurement On the measurement examples below only the OBS 15 will be described However it can be easily replaced by E81BBS1 and E81BBS2 1 Select the AP function in the Instrument SYSTEM menu To do this press the SYSTEM button then select the AP function and press the key amp User Manual 780000102 09 147 Chapter 8 Attenuation profile AP Measurement Fig 47 Selection of the AP function 8000 series example 2 Press the button RESULTS to display the auto calibration status A bargraph tuning informs of th
48. User Manual 780000102 09 113 Chapter 6 Optical Spectrum Measurement EDFA results analysis Using channel filtering The options of the acquisition menu then change and offer Choice of channel In the Choice of Channel option either a value may be entered manually or the current value from the table can be taken Manual A newline appears above choice of channel in which the required value can be entered Table The value of the current selection in the results table is used automatically To vary this selection go the the result screen and use Table contents Channel value Here the manual value of the filtering to be performed can be entered using the direction keys lt and p or the numeric keypad Tracking This option when selected makes it possible to follow the peak of the filtered channel even if this varies slightly in wavelength The information Locked appears as long as the channel remains within the tolerance limits of the instrument If the channel strays outside the tolerance band the information Unlocked appears After setting sweep mode in the acquisition menu of the SETUP screen on Filtering press the START STOP button to start or stop filtering of the signal EDFA results analysis 114 EDFA test configuration The results analysis of an EDFA consists in performing two spectrum analysis one before the signal is amplified and another one after the signal is a
49. activate the alarm system go to the lt Alarms gt line and select Active Thresholds can then be set using the direction keys or numeric keypad to global level or to the level of each channel 1 lt Global alarms gt Number of channels Yes No Max variation level No or threshold modifiable from 0 1 to 60 dB Max SNR variation No or threshold modifiable from 0 1 to 60 dB Max composite p 3 No or threshold modifiable from 59 9 dBm to 20 dBm 2 lt Channel alarms gt Maximum drift Yes No 1 Max acceptable variation between max power and min power on all channels 2 Max acceptable variation between max SNR and min SNR on all channels 3 Maximum composite power User Manual 780000102 09 Chapter 6 Optical Spectrum Measurement WDM OSA test configuration Min Level channel Yes No Max Level channel Yes No Min SNR Yes No Channel number From 001 to the max number of channels Value of channel Display of the wavelength of the channel number selected Delta Ff From 0 to 2 THz 2 THz is the default value Min P From 80 dBm to 9 9 dBm below max threshold Max P From 79 9 dBm to 10 dBm above min threshold Min SNR From 0 to 50 dB Wavelength range This line enables definition or display of the waveband that will be shown on the screen see Limited display band page 107 Table Notes Here the display can be conf
50. alarm signal Only appears if Coupling is set on Strong 780000102 09 Chapter 7 Polarization Mode Dispersion Measurement Performing a PMD measurement with a 5073XXX plug in or OSA 16X OSA 20X OSA 30X series PMD2 Coeff Maximum second order PMD coefficient before an alarm signal Delay and coefficient values for PMD and PMD2 can be modified with the directions keys or using the Edit Number key Parameters available in the File Menu are identical to those for other file types see File configuration menu page on 220 Performing a PMD measurement with a 5073XXX plug in or OSA 16X OSA 20X OSA 30X series module Performing the reference Remote operator Local operator It is recommended before performing a PMD measurement at least once a day to carry out a reference measurement of the broadband source The fiber under test is connected to the OBS 15 or E81BBS1 or E81BBS2 and Base Unit by test cables On the measurement examples below only the OBS 15 will be described But it can easily be replaced by the E81BBS1 or E81BBS2 To do this use the following process Remove the protection cap on the OBS 15 and then connect the connector to the fiber link under test 2 Press the ON OFF button to switch on the OBS 15 broadband source Keep pressure on the ON OFF button until the gt 2s PERM LED lights up The CW LED lights up while the green 1550 nm LED will flash for a few seconds before being steadily l
51. and ORL functions from the Base Unit cannot be selected simultaneously Establishing a Two steps must be carried out to take a reference for an ORL manual reference for an measurement ORL manual measurement 2 Zero ORL adjustment see ORL Zero adjustment page 197 Power emitted reference see ORL Emitted power page 196 Follow the order given above to take the reference They are not two different processes but two steps necessary to establish a reference for an ORL manual measurement For example the references for an ORL automatic measurement are only available for the FOX function a new reference must be redone for an ORL manual measurement Establishing references is only valid for a specific module or function Moreover the Manual ORL references made with the Base Unit are not valid with an OFI module User Manual 780000102 09 203 Chapter 10 OFI Module Manual ORL Measurement acquisition Making the measurement Display of results for an ORL manual measurement 204 NOTE As ORL manual is an option establishing a reference for this mea surement is not automatically available with the OFI module The page displays The results screen with the wavelength and the ORL references established The table where are saved the ORL measurements Before making the measurement check that the reference measure ments are correct see Establishing a reference for an ORL manual measurement
52. at 10 Gbit s it becomes very important to determine the chromatic dispersion CD User Manual 780000102 09 9 Chapter 1 Principles of measurement The principle of measurement of Chromatic Dispersion CD 10 Chromatic dispersion CD is due to a variation with wavelength of the refractive index of the fiber This results in delays in propagation for some wavelengths which broadens the pulse transmitted along the fiber causing consequent distortions and increasing the Bit Error Rate BER of the optical system A given speed of transmission is thus associated with a limit wavelength And for a fiber with offset dispersion standard G 653 ITU T unequal spacing of the channels around 1550 nm is imposed in order to avoid fiber non linearities such as the mixing of four waves Chromatic dispersion is defined by three principal parameters delay at a given wavelength in ps the coefficient of dispersion D expressed in ps nm This corre sponds to the drift in delay as a function of wavelength or to the slope of the curve representing delay as a function of distance at a given wavelength It is expressed in ps nm km if it is standardized to one km its value is divided by the length of the fiber expressed in km the slope S expressed in ps nm2 km This corresponds to the drift in the coefficient of dispersion as a function of wavelength or to the slope of the curve representing dispersion as a function of distance
53. at a given wavelength The coefficient of dispersion standardized to one km and the slope take into account the length of the fiber which may be different from the length of the cable due to the helicoidal factor It is therefore important to know this length with accuracy failing which the results of the measurement will be degraded an error of 10 in the length of the fiber will induce a 10 error in the dispersion measurement Chromatic dispersion is one of the most important characteristics of a fiber it depends principally on the method of manufacture Cable manu facturers take it into account in order to produce different types of cable designed for different applications and different needs such as standard fiber offset dispersion fiber or fiber with non zero dispersion offset Coefficient of Type of fibre Corresponding standard dispersion at 1550 nm Single mode standard ITU T G652 17 ps nm km Single mode offset dispersion ITU T G 653 0 ps nm km Single mode non zero offset dispersion ITU T G655 3 ps nm km User Manual 780000102 09 Chapter 1 Principles of measurement The principle of measurement of Chromatic Dispersion CD Dispersion os nm km Dispersion ps nm km Fig 7 Typical curves of the coefficient of distortion for different types of fibre ITU T standards impose measurement of the following parameters example with G 652 wavelength correspondin
54. at the beginning of the fiber measurement of slope after the marker stops just before the next marker or at the end of the fiber Do not add markers with the Add Marker key after a manual measurement as all the results will be recalculated automatically by the instrument f two markers are too close together they will appear on the trace and the table but no measurement will be carried out on the second marker to obtain results for this marker a manual measurement is necessary If you press the Add Marker key when the cursor is very close to a marker the latter will be deleted To delete a marker move the cursor on to the marker and press the Add Marker key The marker selected will be deleted and a complete measurement without this marker will be carried out To delete several markers use the Event key to move from one marker to the other then press the Add Marker key as many times as neces sary The cursor will be automatically moved on to the successive markers Deletion of markers can cause incorrect measurement results Manual measurements 66 As soon as you have made an acquisition with or without automatic measurement you can make manual measurements on any event on the trace by means of the cursors A and B in association with the func tions of slope detection of splice and calculation of ORL The manual measurements are accessible in the Results page after pressing the keys Advanced
55. bessotne ure Fig 65 Taking a side by side reference 8000 series example Once the references are taken the reference screen is updated for the wavelengths available on the distant instrument It indicates the type of reference used The date of the reference as well as the type and serial number of the distant instrument are indicated on the first line of the table 194 User Manual 780000102 09 Chapter 10 OFI Module FOX Function If the reference is correct disconnect the jumpers at the middle point in order to insert the fiber to be tested If the reference taken is not correct take a new reference If the reference measurements are too weak a warning is displayed Clean all connections to improve the reference measurements the Base Unit The reference is only valid if the jumpers are not disconnected from Taking the reference in a loop back mode gee NOTE This reference can be made wether the Base Units are on the same site or not 1 Connect the optical output of the source FOX port to the optical input of the power meter by means of a jumper Push the References key Push the Loss Loopback key Push the Go key Fig 66 Taking a reference in a loop back mode User Manual 780000102 09 195 Chapter 10 OFI Module FOX Function Establishing a reference for an ORL measurement A ORL Emitted power 196 Once the reference is taken the reference table is updated for the
56. bi directional measurement are selected the key Load Bi dir appears The OEO trace is then displayed User Manual 780000102 09 Chapter 5 Bi directional OTDR Test of a cable meee NOTE If both traces are not compatible not performed using the same wavelength and pulse width a error message is displayed lt Acquisi tion parameters for these two files are different gt For further information on File management see Chapter 13 File management on page 219 Test of a cable In order to test a full cable it is first necessary to make a OEO reference trace where all fiber events have been marked on both origin and end traces This trace may be obtained by requesting an auto measurement after which markers may be added or by performing a manual measure ment The next step consists in memorizing all markers by selecting Lock Evts in the Process page meee NOTE If the auto mode was set for the referencing it is recommended to change to manual mode for the next fibers This will ensure that setup parameters used for all the fibers will be the same than those used for the reference trace Finally a bi directional automatic measurement is performed for each fiber Results are stored in either one OEO file or two SOR files Troubleshooting Warning errors after pressing Error message porn Possible solution the key START prosiem No data link Acti No data connec Go back to System vate c
57. channel wavelength according to the units selected the interval between the channels in THz or in nm the level of power of the channel in dBm the noise level in dBm the SNR for the channel in dB the ratio between the power of the channel and the composite power in N Oo oO FF WO The contents of the last 5 columns of the table will be different if statistics are calculated The values to which the statistics relate being frequency or wavelength and noise level or signal to noise ratio the display will give current value average value max value min value and standard deviation Contents of the table with statistics If the test includes multiple acquisitions mode 2 100 or Continuous mode statistics are calculated on the results To display these results in the table press the Table Contents key then Statistics Five Statistics keys are then available to choose what will be displayed in the table for each channel Without Channel Freq or Interval Level Noise SNR_ P statist Wavel Comp P Statist Channel Freq or Interval or Av For Max F Min F Std dev F or L Freq or Wavel Freq ref or Av L or or or Wavel Wavel ref Max L Min L value delta Statist Channel Freq or Level Av P Max P Min P Std dev P Power Wavel or value delta Statist Channel Freq or SNR Av SNR Max Min Std dev SNR or SNR Wavel SNR ISNR value delta Statist Channel Freq or Min For Max
58. display the type of cursor selected click on Advanced Then select the key CursorX CursoryY to modify the current choice Each click on this key will alternatively insert or delete the check mark against Cursor y The Zoom function is used to analyze part of the trace in greater detail In association with Event OTDR or Channel WDM it enables rapid checking of a succession of events or channels The zoom is centred on the cursor selected If the two cursors A and B are selected the zoom is centred midway between the two cursors The position of the section of trace displayed with respect to the complete trace is represented by a red rectangle on the mini trace at the top left hand corner of the screen To define a zoom on the trace select cursor A or B and center it on the zone to be examined onthe Shift Zoom key select the Zoom function use the gt or q key to increase or reduce the zoom factor User Manual 780000102 09 37 Chapter 3 Graphical User Interface Functions relating to display of a trace Shift function Zoom Auto OTDR 38 Full scale OSA PMD AP Zooming on the different events in succession OTDR measurement Zoom on one of the events detected as shown above On the Trace Event key select the Event function Use the and keys to move the zoom on to the successive events Zooming on the different channels in succession OSA measurement Zoom on one of the
59. gt to select the function the icon under the mouse pointer is surrounded with a green frame select the function by pressing the icon turns orangy yellow Configuring the reflectometry test To call up the test configuration window press the SETUP button Dialog boxes on one and the same screen enable selection of measure ment parameters and display of results and fiber parameters 1 1970 Range Resolution Delete traces on Start Acq Time Detection Group Retr Index Scatter Coefficient Launch Cable Start 2 450 Km Notes Results On Trace Ghosts Events after end of fiber Automatic Total Ori Grid Unit Colors Qsm orpr LESS Lejo j 0355 Test Auto Factory Defaults autt Locator Fig 16 OTDR SETUP screen with dual wavelength module In these windows the parameter selected is in video inverse Select this parameter by means of the direction keys W and A L ifan OTDR module is installed 44 User Manual 780000102 09 Chapter 4 Reflectometry measurements Configuring the reflectometry test The available choices then appear on the screen they depend on the function selected Make the choice by means of the direction keys lt gt Acquisition You can choose the following acquisition parameters whatever the type parameters of measurement displayed on the trace Those measurement parameters are only linked to the next acquisi AN tion If the acquisition
60. if you really wish to delete the selected macro Click Yes if you wish to continue User Manual 780000102 09 243 Chapter 14 Macros Default macro Default macro How to use the itis possible to set one macro as default This is very useful if for default macro example you wish to perform one macro several times in a row Double clicking on the button SCRIPT will automatically play the default macro How to set a Select Default Macro and choose in the sub menu which macro you macro as Wish to set as default default As an alternative you may also select a macro and press the soft key Set as default Default Macro 123 redil Empty Empty Empty Empty Empty Empty Empty Empty Macro 2 is set as default Alternatively set any other aoe pane as default using this button eoea awnavawn Fig 92 Default button Macro playback To play the default macro you may directly double click on SCRIPT To play another macro go to the macro screen Click on SCRIPT once and select the macro you wish to play Then press the soft key Play 244 User Manual 780000102 09 Chapter 14 Macros Storing a macro During all the play back of the macro you can see the icon M gt atthe top of the screen gee NOTE This icon changes to Mii when the playback is suspended by a pause event waiting for the user to restart the process see Inserting a pause page 242 All actions
61. is preferable to connect the reflecto meter to port 4 when measuring insertion loss of a connector situated after the launch cable it is preferable to connect the reflectometer to port 1 82LFSM2 82LFSM2 82LFSM4 plug ins contain one reel of singlemode fiber with 82LFSM4 plug two jumpers to be used as a launch or receive cable with an OTDR ins These plug ins can also be used for demonstration and training purpose mw NOTE As these plug ins are not test instruments they are not supplied with a certificate of calibration 82LFSM2 82LFSM4 Type of fiber used Corning SMF 28 or SMF 28e Recommended group indices 1 4677 1310nm and 1 4682 1550 1625nm 264 User Manual 780000102 09 Chapter 16 Technical specifications MTAU plug ins 82LFSM2 82LFSM4 Length of fiber 2 km 0 02 0 11 km 4 km 0 03 0 21 km Attenuation of connectors lt 0 5 dB 1 Connectors cleaned in good conditions MTAU plug ins All specifications are given at 25 C excluding connectors Plug in 81MTAU2 81MTAU3 Wavelength range nm 1260 1640 Insertion Loss max dB 1 1 5 Return Loss max dB 50 PDL max dB 0 1 Repeatability max dB 0 01 1 Polarization Dependent Loss 2 At constant temperature and polarization BBS plug ins Specifications measured at 25 C unless otherwise mentioned Parameter 81 BBS1 81 BBS2 Wavelength range 148
62. new message is displayed to inform you that all data is being erased on the CD RW Click on Burn CD or Burn and Close CD according to whether you wish to close the session of your CD or not A new dialog box is displayed asking you to check that the CD Rom door is securely closed A message is displayed to indicate that you need to wait the CD Rom is being burnt A last message appears a few minutes later to let you know that the CD Rom has now been successfully burnt Click on any key to remove the message 10 You may now securely remove the CD Rom 238 User Manual 780000102 09 Macros The macro function allows to store series of user actions in order to play them back automatically The macro function is operational only while the Base Unit is used under the context of fiber optic applications meaning used with one of the following application selected OTDR OSA CD PMD AP LTS A Actions in the SYSTEM page will not be recorded A file macro may also be operational with no active modules as long as Standalone results for fiber optics is used and concerned files are fiber optics files The topics discussed in this chapter are as follows Calling the Macro function on page 240 Macro recording on page 240 Default macro on page 244 Macro playback on page 244 Storing a macro on page 245 User Manual 780000102 09 239 Chapter 14 Macros Calling t
63. nm in 1 nm steps by means of the direction keys 4 and p Unit Unit of power displayed Reference level Watt dBm for displaying absolute power dB for displaying a result relative to a reference link loss If dB units were chosen in the previous line selection of the reference value for the wavelength selected Using the direction keys first choose the wavelength then press the gt key to access choice of the value XXX XX then confirm this value with the validation key This reference is also automatically available in the Results page using the Set as Reference key Attenuator compensation User Manual Choice of level to be applied to the wavelength chosen for measurement to compensate for the loss due to the external attenuator XX XX dB First use the direction keys to choose the 780000102 09 185 Chapter 10 OFI Module LTS function wavelength then press gt to access choice of value then confirm this value by pressing the validation key mp mw NOTE To copy a Reference Level or a Attenuator Compensator on all wave lengths select the reference wavelength and click on Update for All Wavel Configuring the Alarm Activation of the Alarm function any result below alarm parameters the lower threshold or above the upper threshold of the power meter will be displayed in red on the Results page Lower and upper thresholds Choice of lower and upper thresholds for each available wavel
64. of Chromatic Dispersion CD The Fast Fourier Transform Method into a time distribution will give a Gaussian curve and the mean DGD value is determined from this curve for fiber links with strong mode coupling It is not necessary to modify the polarization angle of the analyzer when strong mode coupling is used For weak mode coupling an angle could be selected to get the maximum amplitude of the modulation The instrument should have a higher dynamic range than the link itself A 35 dB dynamic range is usually enough for most of the applications and 45 dB should be used for very long distance networks The measurement range of the PMD should be linked with the transmis sion rate For WDM applications it should be between 0 1 ps to 60 ps so that measurement can be carried out for bit rates between 2 5 and 40 Gbit s The table below indicates the maximum permitted PMD values for various bit rates Bit rate Gbit Maximum MD coefficient ps V s PMD ps m 400 km cable length 25 40 lt 2 10 10 lt 0 5 40 25 lt 0 125 Tables at the end of chapitre gives amore complete list of the maximum PMD values for different bit rates information about the appropriate standards and limits for PMD The principle of measurement of Chromatic Dispersion CD Since more and more links including those already installed are being used to transmit WDM Wavelength Division Multiplex signals or signals
65. of events To do this Inthe Advanced menu select Manual measurement Select the Evt Code button User Manual 780000102 09 61 Chapter 4 Reflectometry measurements Table of results Fig 22 Buttons used to modify types of events New more specific event types are then proposed Ghost Position the cursor on the line for which modification of event type is desired Click on the button corresponding to the required type of event Table notes with each event it is possible to associate anote of no more than 40 characters entered by the user an indicator of uncertainty qualifying the result displayed 62 User Manual 780000102 09 Chapter 4 Reflectometry measurements Table of results mee NOTE This information appears in the table under the line relating to the event if it has been validated in the SETUP menu on the Notes line Notes For each wavelength a maximum of 16 notes is possible For each note 40 characters can be entered gee NOTE Each note is associated with an event Consequently if the event is deleted the note the will be deleted too To enter a note inthe menu SETUP gt Result Screens gt Notes the Notes option must be selected onthe Results page in the table select the event press Advanced press Notes enter the text of the note in the edit menu that appears press Confirm and then Exit In the table of results
66. other Optical Broadband Source with associated optical connectors Fiber scope with associated optical connectors Cleaning kit Two jumpers with associated optical connectors One coupler Communication tool either GSM or telephone or optical talk set AP Setup menu After connecting the fiber to be tested and all the equipment is switched on and ready for use you will then need to set up the Base Unit to perform an AP measurement To access the Attenuation Profile setup menu press the SETUP button on the Base Unit The different measurement parameters are displayed To modify a parameter use the direction arrow keys 4 et W The possible options will then be displayed To change an option use the direction arrow keys lt and p to make a choice 1 The OBS 15 and E81BBS Optical Broadband Source covers S C L bands The E81BBS2 covers the OESCL bands 144 User Manual 780000102 09 Chapter 8 Attenuation profile AP Setup menu j Fiter Lengh 10 500 tem Distance Ure m l a at D a e a i feormatired to te Abode Merve Ret 1310 00 rem I 1630 00 rem ve 100 rm Fig 46 Configuration menu for AP test The different parameters proposed are described below You may either choose the default values by pressing the Test Auto key either define your own configuration Test Auto configuration Setup Menu Acquisition Averaging acquisition No Results Screen
67. page 203 Push the START STOP key to start the measurement To display the fiber measurement page push the RESULTS key For each wavelength push the key Keep Result to display the result in the table The Clear Table softkey orders deletion of all the results displayed in the table If the Alarm function has been activated any result that exceeds the selected thresholds appears in red in the table User Manual 780000102 09 Chapter 10 OFI Module File Management tom 2444 Sas __ sic Fig 74 Results for an ORL manual measurement Once all the results are displayed click on the FILE button to save the file in a directory File Management Storing results Although each measurement is automatically stored for FOX results only it is possible to save the results under a different file name direc tory etc Once the results are displayed Push the FILE button Select Setup with the key Setup Explorer on Modify the parameter you want in the FILE configuration menu 4 Click on the Store Trace key The FOX files are saved with the extension FOX The LTS files are saved with the extension LTS The ORL files are saved with the extension ORL User Manual 780000102 09 205 Chapter 10 OFI Module File Management A Recalling files 206 With the LTS and ORL results two files are saved The first file is to be used with the Base Unit and allows all LTS mea surements r
68. parameters are not accessible check that the OTDR function has really been selected see Selecting the function on page 44 Laser The acquisition will be carried out on the wavelength selected for multiple wavelength modules the possible values depend on the modules All the acquisition will be carried out on all available wavelengths Mode Choose the mode of detection of events Real time the Base Unit performs up to ten acquisitions per second and displays the resulting trace in real time together with an indicator of the state of the connection This mode makes it possible to analyze a fiber quickly without any memory effect and thus to check the establishment and quality of the connections Manual the acquisition parameters must then be configured as a function of the fiber to be tested When acquisition is complete a measurement is made and the results are displayed Auto the Base Unit starts an acquisition with an automatic configuration making the best compromise for Pulse Range Resolution When acquisition is complete a measurement is made and the results are displayed Fault Locator the Fault locator mode allows to detect the end of fiber distance from the origin and by consequence to detect a possible break of this fibre see Fault Locator Mode on page 72 User Manual 780000102 09 45 Chapter 4 Reflectometry measurements Configuring the reflectometry test Source for CD modules and
69. plug in module with mandrel E810FIORL Application software Optical Fiber Trace Software for post analysis EOFS100 Optical Fiber Cable Software Cable for Acceptance report generation EOFS200 BBS plug ins BroadBand Source plug in 1480 1640 nm E81BBS1 BroadBand Source plug in 1260 1640 nm E81BBS2 Internal Printer modules 8100 series Internal Printer Module E82PRINTER Launch fiber modules for OTDR demo and test Po Launch cable singlemode 1 fiber G652 2km E82LFSM2 Launch cable singlemode 1 fiber G652 4 km E82LFSM4 1 Two optical connectors must be specified when ordering each launch fiber module User manual references User manuals for MTS T BERD plug ins User manual for modules 8100 series French E8100M01 User manual for modules 8100 series English E8100M02 User manual for modules 8100 series German E8100M03 User Manual 780000102 09 273 Chapter 17 Options and accessories References of optical connectors and adapters References of optical connectors and adapters 274 Optical connectors for plug ins OTDR Single mode and WDM Fixed Connector FC PC Connector EFCPC FC APC Connector only for single mode EFCAPC E2000 Connector only for single mode EE2000 E2000 HRL Connector only for single mode EE2000HRL 1 A Connector fixed or universal must be specified at time of order Front Panel Optical Connectors for plug ins
70. recorded in your macro are now performed The speed of the playback is not the same as the speed of the record ing All actions except for acquisitions will appear faster but will remain slow enough to let you see what is currently performed Acquisition times remain the same as during the recording meee NOTE Don t forget to add interactive events during your macro recording if you need a pause a specific message or simply to be able to abort the macro at a certain stage if necessary Touching a button on the Base Unit will automatically cause the macro A N playback to abort except for restarting the playback interrupted by a pause event NOTE For a File macro you may select several files before you call the Macro function Storing a macro The Base Unit lets you save macros as files on the hard disk or other storage media To store a macro select it and click on the soft key Store It will automat ically store it in the current directory meee NOTE If you wish to store your macro at a specific place on your storage media make sure you use the file explorer to set that place as your current directory User Manual 780000102 09 245 Chapter 14 Macros Storing a macro To reload this macro later on go to the file explorer and load the file The macro will automatically take the first available place in the list of your 10 macros The macro can not be loaded if no macro position is avai
71. the base appearing in the other tabs Explorer Function gSetup Explorer Fig 88 Setup Explorer To access the Explorer function after pressing the FILE button press the Setup Explorer key Description Of The explorer is used to select the storage medium and to create or the explorer rename directories and files The left hand part presents the storage architecture Use the keys 4 and W to move around among all the media and their respective directories The right hand part displays all the files present in the directory selected The direction keys can be used to move horizontally between the two parts and vertically within each zone At the top of the screen the file signature selected is repeated see Example of signature of an OTDR file in the File Menu on page 221 230 User Manual 780000102 09 Storage media Storage media built into the Base Unit External USB storage media Chapter 13 File management Explorer Function Fig 89 Example of explorer with files OTDR and OSA For saving or recalling data the Base Unit offers a wide choice of media both built in and external Free space on selected media is clearly displayed at the bottom of the left panel An internal memory A hard disk or high capacity storage on option If this option is selected then the hard disk replaces the internal memory A31 2 in floppy disk drive on option 8000 plat
72. the screen If all the results lie within the thresholds no result is in red the icon becomes E See Table notes on page 62 780000102 09 49 Chapter 4 Reflectometry measurements Configuring the reflectometry test No no display of notes Notes display of notes entered by the user Uncertainties display of indicators of the level of confidence in the measurement result Factory default value No Results on trace Displays No the trace alone All the trace with results and markers Graphics only the trace with markers only Factory default value All If All or Graphics only is selected the reflectometry trace is displayed with a dotted vertical line set on the end of launch cable _ if the Launch Cable is defined in the SETUP menu and a dotted vertical line on the end of fiber Ghosts E Choice Yes or No of whether information relating to ghosts is to be displayed If ghosts are displayed the reflection icon in the table of results appears dotted and the reflection value is displayed in brackets on the trace for example R 50 dB Factory default value Yes mw NOTE Ghosts are detected only during an automatic measurement 50 User Manual Events after end of fiberif yes the events after the end of fiber are Measure ORL Grid Unit Color RVB detected Factory default value Yes if Yes results of the total ORL measurement are displayed Factory defaul
73. the shortest pulse EDZ measured at 1 5 dB below the peak of a non saturated reflecting event ADZ measured at 0 5 dB on the basis of a linear regression from a reflectance of type FC APC 50 dB Information on fiber plug ins 5020TF and 82LFSM2 82LFSM4 5020TF plug in The 5020 TF single mode and multi mode modules contain two reels of fiber for use with a reflectometer They are intended for training and demonstration and can be used as launch cable Port 1 Port 2 Port 3 Port 4 FIBER 2 TEST FIBER SM Fig 96 Front panel of a fiber plug in ex 5020TF SM User Manual 780000102 09 263 Chapter 16 Technical specifications Information on fiber plug ins 5020TF and 82LFSM2 82LFSM4 meee NOTE As these plug ins are not test instruments they are not supplied with a certificate of calibration Module 5020TF MM Module 5020TF SM Multimode Single mode Type of fiber used Corning MM Corning SMF 28 Recommended group 1 50140 850nm 1 46750 1310nm indices 1 49660 1310nm 1 46810 1550 1625nm Length of fiber 1 300 30 m 466 23 m Length of fiber 2 300 30 m 1000 50 m Attenuation of connec 0 5 dB tors 1 Guaranteed at 1625 nm except for port 1 of fiber 2 connectors cleaned in good con ditions Recommendations for using fiber 2 long fiber The attenuation per unit length of fiber 2 may be higher near port 1 when measuring a dead zone it
74. the tube the ribbon and the fiber itself Its composition is defined in Cable Structure gt Cable Content In Increment fiber number mode the fiber code is automatically incre mented at each new file save Incrementation is done as a function of the max number of fibers tubes and ribbons defined in Cable Structure Max Tubes Max Ribbon Max Fibers the composition of the color code always incrementing first the fiber number then the ribbon number then if applicable the tube number the choices made for each color code in Cable Structure Tube Coding Ribbon Coding Fiber Coding and in Code Defi nition see Cable structure on page 226 The fiber number may be incremented or decremented directly with keys q and p or using the numeric keypad NOTE The Fiber Code and the fiber number concatenated with Fiber Name are interdependent they are incremented or decremented at the same time However the fiber number remains a number only while the fiber code is alphanumerical Whether it includes a color code or not see Cable structure on page 226 it may be composed of one two or three parts see figure page 225 User Manual 780000102 09 Chapter 13 File management File configuration menu Fiber and cable parameters used in the example Fiber Name Fib Cable Content Tube Fiber erx Max Tube 12 Max Fiber 24 Coding used for the fiber and the
75. to start the LTS function and or the icon to start the FOX function or the icon E to start the ORL function using the key LTS function Principle of the optical power and attenua tion measure ments Power A power meter is all that is needed to measure emitted or received measurement power to measure emitted power connect the power meter directly to the output of the optical emitter to measure the power at the input of an optical receiver the power meter is connected to the end of the fiber at the point where the optical receiver would be connected 182 User Manual 780000102 09 Chapter 10 OFI Module LTS function Attenuation For measurement of the attenuation of power in a complete link or in measurements elements such as sections of fiber connections or optical components a optical link loss ight source and a power meter are required This attenuation is usually deduced from the measurement of optical power at two points Laser light source of the Base Unit Power meter of the Base Unit Reference Link under test fiber Attenuation Aap P1 dam P2 dBm To perform accurate measurements the following conditions are vital Use one of the light sources of the LTS or a light source which is stable both in time and as a function of temperature Make sure that all connections and fibers and the receiving cell are perfectly clean Use a reference link between the laser source and
76. total loss on a link with launch cable To do this 1 Place one of the cursors at the end of the launch cable 2 Select the other cursor Use the Event function The measurements displayed give the actual distance from the start of the link and the attenuation of the link plus the attenuation of the connection Table of results mw NOTE To display all the events make sure that the detection threshold selection in the SETUP menu is All Two types of tables of results are possible with the Base Unit A table with a line displayed under the trace and giving the type and characteristics of the event nearest to the cursor A table giving the type and the characteristics of all the events detected during the automatic measurements the 8 lines displayed correspond to the 8 events nearest to the cursor The line corre sponding to the event nearest to the cursor is highlighted This high lighting moves if the cursor is moved At the top of the table a line shows the generic parameters of the fiber numbers of events present total ORL of the link marker locking icon and launch cable length if selected Change of table To obtain the 8 line table select the Table function on the Graph Table Bend key To return to display of a single line in the table select the Graph function To display the table and the trace dedicated to the bend select the Bend function In Bend mode there is neither access to the events
77. tube TIA Fiber N Fiber N 1 Color Code Yes No Yes No lt Fiber Name gt Fiberx24 Fiberx24 Fiberx25 Fiberx25 lt Fiber Code gt BI Aq 1 24 Gold BI 2 1 Fig 83 Example of incrementation of fiber code Link The information entered in the Link Description window concerns the description Direction Origin Extremity Different extremities editing and or the modifications of the cable and fiber parameters When a trace is recalled without recall of the configuration the parameters of this trace will be present only in its signature The direction shows if the acquisition has been made from the origin to the extremity O gt E or from the extremity to the origin E gt O Changing direction makes it possible when different extremities are handled to see the parameters of the fiber for the other extremity The name of the origin of the link may be entered here The name of the extremity of the link may be entered here In some cases it is interesting to save different information for the origin and the extremity of the cable User Manual 780000102 09 225 Chapter 13 File management File configuration menu 226 Cable structure A If this option is validated it is possible after selecting the extremity to be edited in the Cable Structure menu to modify the values specific to the cable cable name color coding content of the coding for each of these extremities See chapter Cable structure on page 226 T
78. wish to make a measurement without markers deactivate memo rization of events by pressing the Free Evts key User Manual 780000102 09 71 Chapter 4 Reflectometry measurements Fault Locator Mode Fault Locator Mode Function The Fault locator mode is used to detect the distance of the end of fiber from its origin Consequently il allows to detect a possible break of the fiber Choosing the 1 Push the SETUP button function 2 Inthe Acquisition parameters select the line Mode Select Fault Locator with the direction keys see Configuring the reflectometry test on page 44 or Push the Fault Locator key on the right of the screen mu NOTE To go back to the standard mode push the Standard Mode button or deselect Fault Locator in the Acquisition parameters Test configuration 1310 nm 1479 mm pee Auto Fiber End Launch Cable Start 2450 Km Group Retr index gt Unit Fig 25 Fault Locator Setup To automatically set the measurement parameters push the Test Auto key To manually set the test in Fault Locator mode push the SETUP button Five parameters have to be defined Laser the wavelength of the signal 1310 or 1550 nm 850 or 1300 nm according to the module 72 User Manual 780000102 09 Starting the test Fiber End Launch Cable Start Group Refr Index Bend max Unit Chapter 4 Reflectometry measurements Fault Locator Mode Auto by default select 1550 nm for a
79. with Adapter types supplied are FC SC DIN ST and LC pea th ag j g S Le r H PC Adapter EUFCAD ore 79 gt ON Adapter EVOREAD PC of APC Connector Crp ST Adapter EUSTAD 4 A SC Adapter BUSCAD Fig 11 5 different types of adapters may be mounted on the universal connector Switching In order to switch from an adapter to another proceed as shown adapter type 20 User Manual 780000102 09 Chapter 2 Getting started Installing a new version of the software Pull out in the direction of the arrow in order to release the adapter from the lug holes To place an adapter position the handle as shown in order to engage with the the lugs push hard and pull the handle down Fig 12 Removing and refitting an adapter Cleaning the Remove the adapter in order to access the ferrule and clean it using a Universal cotton swab connector Installing a new version of the software A A When a new software version is loaded there is a risk of re initializa tion of the internal memory Before installing the new software it is therefore advisable to to save the results in the memory using the Save function in the Memory menu called up by the FILE button Do not interrupt the installation process as this could damage the instrument To avoid any interruption of the installation procedure the Base Unit must be operating on the mains if the procedure is started while oper
80. zone is made for the 4 wavelengths 1310 1480 1550 1625 nm The result is 4 Fresnels on which the markers are placed One of the Fresnels having been chosen as the reference the delay or advance of the others is measured with respect to this User Manual 780000102 09 163 Chapter 9 Measurement of chromatic dispersion Making a chromatic dispersion measurement Conditions of measurement A CD acquisition mode Automatic acquisition mode 164 3 Calculation of dispersion on the basis of the position of the markers see Method of CD measurement used by the Base Unit on page 12 To carry out a measurement of chromatic dispersion on an optical link using the OTDR method of the Base Unit it is necessary to have a reflective element such as a connector at the end of the fiber If the end of fiber is detected but no reflective event is seen during the phase of positioning of the markers then a 0 dB termination connector should be placed at the end of the fiber this connector is supplied as an accessory with the CD module It increases the end of fiber Fresnel peak amplitude and thus enables the measurement The limit of automatic detection is about 24 dB for the attenuation of the link 120 km at 0 2 dB km at 1550 nm In manual mode it is about 30 dB Measurements of chromatic dispersion are generally made with 4 markers at 1310 1480 1550 and 1625 nm However if only three markers can be positioned the measurement
81. 0 1640 nm 1260 1640 nm Minimum spectral density dBm 42 42 0 1 nm Minimum spectral density dBm 32 4 32 P nm Output power dBm gt 4 gt 8 Polarisation extinction ratio dB gt 10 gt 108 Power consumption Wh 4 10 User Manual 780000102 09 265 Chapter 16 Technical specifications OFI plug ins Parameter 81 BBS1 81 BBS2 Operating temperature range 5 to 45 C 5 to 45 C C 1 over 1480 1600 nm wavelength range 2 over 1270 1600 nm wavelength range 3 for each of the three SLEDs independently OFI plug ins There are preliminary specifications for the OFI 81xx Bi directional loss specifications Specifications measured at 25 C mw NOTE This applies to the 81xx OFI modules To ensure optimal use bi directional measurement and communica tion two units are required Source function also valid for source mode 81xx OFI Module Laser type Class 1 laser Wavelength at 25 C 1310 20 nm 1490 3 nm 1550 30 nm 1625 5 nm Nominal output level into 9 125 3 5 dBm um fiber CW mode Modulated output level 3 dB lower Level stability Short term 15 min AT 0 3 0 02 dB K Long term 8 hours AT 3 K 0 2 dB 1 After 15 min warm up 266 User Manual 780000102 09 Chapter 16 Technical specifications OFI plug ins Bidirectional loss function FOX port 8 poc
82. 09 Chapter 2 Getting started Installing a new version of the software 6 Click on Previous choice or Next Choice to display the previous and next versions available 7 Click on Confirm to start the upgrade of the selected software s meee NOTE The software versions list does not always appear cf previous ver sions as well as the Previous Next Choice buttons and the Con firm Continue key In this case the upgrading starts automatically Upgrading begins The Base Unit is automatically rebooted Upgrading takes several minutes At the end the Base Unit is auto matically restarted if the boot version is superior to version 01 16 Installation You must be equipped with a USB memory stick with a minimum capacity memory stick Only one USB memory key should be plugged in the unit at any one If you wish to use a second USB key even if it is from the same man ufacturer then you must fully reboot the unit i e power down and remove external power if it was present Before installing the upgrade you must format the USB memory stick steps 1 to 5 1 Insert the memory stick into one of the sockets on the Base Unit provided for this purpose Switch on the Base Unit Press the SYSTEM button 4 Successively select Expert tools gt Media utilities gt Usbflash Format 5 Confirm your choice to actually format the USB memory stick As for any media formatting please note that all data present on the A N USB memory s
83. 16X OSA 20X OSA 30X series module 129 Performing the reference 2 00000 eee 129 Remote operator 000 00 cee eee eee 129 Local operator 0 2 eee eee 129 Performing the measurement 2 205 132 Performing a PMD measurement with a 81XXX plug in 133 Remote operator 0 cee eee eee 133 Local operator csie bss ae e o pace BE ele eee cel 134 Display of results 000 e eee eee eee 135 Spectrum FFT menu key 2 00 e eee eee eee 135 Display of PMD results 0 0 0 0 e eee eee eee 135 Statistics results 0 0 00 cece eee eee 137 Table of results 2 1 eee 137 Graphics display 000 cece eee eee eee 137 Information messages 0 ee eee eee ee 138 File Management 000 eee eee eee 139 Storing PMD results 0 0 0 c eee eee eee 139 Recalling PMD files 0 0 0 eee eee eee 140 User Manual 780000102 09 xii Table of Contents PMD standards and limits 00 00e055 140 Abacus for a typical system 20005 141 Chapter 8 Attenuation profile 143 Recommended equipment 2 00ee0eeeeee 144 AP Setup Menu 2 2 00 ec eee eee eee 144 Acquisition parameters 0 0 cee eee eee 146 Acquisition band 0 c ee eee ee eee 146 Averaging acquisition e eee eee 146 Make Reference 0 00e cee eee eee 146 Measurements
84. 47 reflections 47 splice 47 U Universal connector cleaning 21 USB memory stick 27 User manual references 273 W Wavelength OTDR specifications 252 WDM specifications 259 WDM OSA acquisition parameters 98 Configuration 96 difference between 2 traces OSA 42 display param and analysis alarms 104 grid 102 measurement parameters 100 results display 108 SNR parameters 101 Table results notes 112 table results 110 Z Zoom Attenuation Profile 153 CD 170 OTDR 58 PMD 137 WDM OSA 107 278 Test and Measurement Regional Sales North America Latin America Asia Pacific EMEA www jdsu com Toll Free 1 800 638 2049 Tel 55 11 5503 3800 Tel 852 2892 0990 Tel 49 7121 86 2222 Tel 1 240 404 2999 Fax 55 11 5505 1598 Fax 852 2892 0770 Fax 49 7121 86 1222 Fax 1 240 404 2195 8100M02 UM 10 06 AE Rev 09 10 06 English
85. 5022MM Wavelength 850 20 nm 1300 20 nm Dynamic 20 dB 18 dB with broad pulse RMS 25 dB 23 dB Distance Up to 80 km Pulse width 3 ns to 200 ns Event Dead Zone 1 5m at 3 ns Attenuation dead zone at 3 ns 5m Laser at 50 ns Specified value corresponding to the one way difference in dB between the level of back diffusion extrapolated at the beginning of the fiber and the level containing 98 of noise after 3 minutes of averag ing Typical value corresponding to the difference in dB between the level of back diffusion extrapolated at the beginning of the fiber and the RMS noise level after 3 minutes of averaging Measured at 1 5 dB below the peak of a non saturated reflecting event Measured at 0 5 dB on the basis of a linear regression from a reflec tance of type FC PC User Manual 780000102 09 255 Chapter 16 Technical specifications Reflectometer plug in available Single mode modules Typical values measured at 25 C unless otherwise indicated Plug ins Monomode High Very high Ultra High Plug ins Short resolution High dynamic Long d Bees Lon Dynamic Very Long 9 distance Middle distance dein ce 9 Long Range distance distance 8114 15 26 SR 8114 15 26 DR 8114 15 8117 36 HD 8114 15 8129 8115 26 36 29 81xx VLR SRe 26 36 HD 26 VHD VHD UHD Wave 1310 1550 1310 1550 1310 1625 1310 1550 20 1310 20nm 1310 20nm length 20 nm 20
86. 81XXX plug in The 81XXX plug in is equiped with an internal polarizer which is automat ically switched on and off during referencing The reference is therefore done automatically by the Base Unit Remote 1 Remove the protection cap on the OBS 15 and then connect the Operator connector to the fiber link under test 2 Press the ON OFF button to switch on the OBS 15 broadband source Keep pressure on the ON OFF button until the gt 2s PERM LED lights up The CW LED lights up while the green 1550 nm LED will flash for a few seconds before being steadily lighted User Manual 780000102 09 133 Chapter 7 Polarization Mode Dispersion Measurement Performing a PMD measurement with a 81XXX plug in Local operator 1 Remove the dust cap from the Signal Input optical socket situated on the rear panel of the Base Unit to connect the fiber link you have connected to the OBS 15 as shown in the below diagram Select the PMD function in the Instrument Setup menu Press the SETUP button to access the Base Unit configuration menus Select the appropriate PMD test setup according to your application as earlier defined in this chapter Press the START STOP button to see the results within a few seconds Repeat the PMD measurement for every fiber to be tested it will have to be connected to the OBS 15 j Fiber under test Jumper Jumper
87. Chapter 16 Technical specifications WDM plug ins Plug in Plug in 81WDMPMD 81WDM Module module S C L O E S C L Accuracy 10 pm Resolution of display 1 pm Minimum interval between channels 10 GHz 80 pm Optical Bandwidth FWHM 30 pm Power Range of display 90 dBm at 30 dBm Resolution of display 0 01 dB Channel measurement range 79 dBm at 10 dBm Noise floor 86 dBm Max permissible power before signal cut off total 20 dBm per channel 10 dBm Accuracy in power gt 0 5 dB max Linearity 0 2 dB Flatness 0 2 dB Dependence on polarization 0 05 dB 0 15 dB ORL Optical Return Loss 35 dB ORR Optical Rejection Ratio 35 dB at 50 GHz from the carrier 40 dB at 100 GHz from the carrier in the range of 1525 1570 nm 1590 nm from 0 to 40 dBm PNR AWN with max resolution 260 User Manual from 40 dBm to 5 dBm in the range of 1525 1620 nm 1550 nm with averaging 75 dBm without averaging 1550 nm with averaging 81 dBm without averaging at 30 dBm and 1550 nm excluding the uncertainty relating to the input connector inthe range of 1525 nm 1620 nm reference 1550 nm on the basis of the peak of a single carrier on the band 1530 nm 1605 nm at 0 dBm and 780000102 09 Dimensions weight approx 500 g 1 1 Ibs and weight of WDM measurement width 120 plug ins Height 27 Len
88. D if you had entered Auto store then the results will be saved automati measurements caly If not or if you want to store the results under another name directory etc 1 Click on the FILE key 2 Select Setup with the key Setup Explorer 3 Modify the parameters you want 4 Click on Store Trace The Chromatic Dispersion traces are stored with the extension CD Recalling CD Once a CD file has been stored recall it using the Explorer files Select Explorer with the key Setup Explorer 1 2 Using directions keys select the directory and then the file to open 3 Click on Load 4 Click on View Tace s or Load Trace Config The selected file is opened For further informations on file management see Chapter 13 File management CD standards and limits Measurements of chromatic dispersion are only necessary in the following cases Adaptation of of existing networks to transmission speeds of 10 Gbits s or more Installation of new fiber networks for transmission speeds of 10 Gbits s or more Qualification of fibers and components by manufacturers 176 User Manual 780000102 09 Chapter 9 Measurement of chromatic dispersion CD standards and limits The conditions required for measurements of CD are invariably linked to transmission speeds per channel and at the corresponding distance Chromatic dispersion is also an important parameter for fibers with offset dispersion ITU T G 653 as the zero
89. D module can also be used as a light source In this case connect the fiber into which you wish to inject the light from the source to the output connector of the CD plug in User Manual 780000102 09 179 Chapter 9 Measurement of chromatic dispersion Source function To configure the CD plug in as a light source 1 Go into the SETUP menu of the OTDR tab of the CD plug in 2 Select Mode Source All the menus of the OTDR are then grayed out except the laser line 3 On the Laser line select the wavelength desired for the source the 4 wavelengths used for CD are available to choose from 4 Press the START STOP key to start or stop the laser 180 User Manual 780000102 09 OFI Module This chapter describes the functions of the OFI module Optical Fiber Installation and its use The topics discussed in this chapter are as follows OFI module on page 182 Selection of the OFI module on page 182 LTS function on page 182 FOX Function on page 191 Manual ORL page 203 File Management on page 205 User Manual 780000102 09 181 Chapter 10 OFI Module OFI module OFI module The OFI module is used to make insertion loss measurements ORL measurements and distance measurements The following functions are available with the OFI Module Loss Test Set FOX Fiber Optic eXpert Selection of the OFI module Push the SYSTEM button Select the icon E
90. Display of the quality of the connection see Connection quality indicator on page 52 Phase 4 The elapsed averaging time and the number of averages calculated are displayed When the duration of acquisition has elapsed the automatic measurement is carried out NOTE The acquisition can be stopped at any moment by pressing the START STOP key Then an automatic measurement is performed but certain events cannot be detected a manual measurement must then be made User Manual 780000102 09 A Manual acquisition mode Chapter 4 Reflectometry measurements Acquisition M 100 19 01 2004 P alim Row P used 50W 16 40 1550 nm 50265R 64 cm 60s IOR 1 46500 gTrace Event 56 CHG 0 lt Zoom gShift Cursor A 7 Cursor B Zo gt Viste Vib Full Acquisition in progress Scale oooo M 01 00 Advanced _ Cosa Powermete 4 Elapsed acquisition Number of averages Remaining Total acquisition time calculated acquisition time time Fig 20 Example of automatic acquisition A the end of Auto acquisition the parameters are automatically updated in the Acquisition menu Auto acquisition mode deactivates the Set Event function see Memorization of the position of events on page 71 the measurement is then re initialized In this mode the Base Unit carries out a number of averagings defined as a function of the maximum acquisition time specified in the Acquisition menu and th
91. E optical fibers GR 253 CORE Transport system on synchronous optical networks SONET User Manual 780000102 09 177 Chapter 9 Measurement of chromatic dispersion CD standards and limits 178 Calculation charts available Atypical calculation chart can be used to give the limit delay as a function of the speed of transmission per channel The Telcordia GR 253 CORE standard Synchronous Optical Network SONET transport system indicates that the delay of propagation between different wavelengths due to chromatic dispersion must not exceed 0 306 times the time interval NRZ Transmission Equivale ee speed SDH SONET nt time delay at 1550 per channel slot nm 51 Mbit s OC 1 19 3 ns 5 9 ns 155 Mbit s STM 1 OC 3 6 43 ns 1 97 ns 622 Mbit s STM 4 OC 12 1 61 ns 492 ps 1 2 Gbit s OC 24 803 ps 246 ps 2 5 Gbit s STM 16 OC 48 401 ps 123 ps 10 Gbit s STM 64 OC 192 100 ps 30 ps 40 Gbit s tli OC 768 25 12ps 7 8ps A similar calculation chart is also provided by the ITU standards It gives the maximum distances for different transmission speeds and types of fiber at about 1550 nm Transmission speed G 652 G 655 per channel Gbit s eH PONEN SSMF NZ DSF 2 5 Gbit s STM 16 OC 48 640 km 4400 km 10 Gbit s STM 64 OC 192 50 100km 300 500 km 40 Gbit s STM 256 OC 768 5km 20 30 km User Manual 780000102 09 on speed Transmi
92. FOX function the measurement results are automatically saved the fiber number is automatically incremented To display the fiber to be tested push the START STOP button in the results page of the FOX function see Choosing the fiber to be tested page 199 Before making a power a ORL and or distance measurement with the FOX function of the OFI module you have to take references 1 On the RESULTS page push the References button Different references can be taken For a loss measurement Side by Side reference Loopback reference Foran ORL measurement Power emitted reference Zero ORL NOTE As the ORL is an option establishing a reference for this measure ment is not automatically available with the OFI module User Manual 780000102 09 193 Chapter 10 OFI Module FOX Function Establishing a Before any measurement you must establish references reference for loss measurement Two methods can be used to take references taking a side by side refer ence and taking the reference in a loop back mode Taking a side by side reference gue NOTE This reference can only be performed when the two Base Unit are at the same location _ On the RESULTS page push the References key Push the Loss Side Side key oOo N Link the FOX connectors of the two Base Units by using two jumpers A Push on Go key Reference date Type and serial number of the distant instrument
93. Fig 60 Optical connectors The type of optical connector used for the power meter is UPP Universal Push Pull which is compatible with all diameter 2 5 mm connectors FC SC ST DIN E2000 etc mu NOTE The source connection is the same as the FOX port Configuring the To activate the function LTS Press the SYSTEM button Use the direction keys to select the LTS icon framed in green and press the confirmation key amp the icon in the frame will turn yellow The effect of this action will be to bring the power meter into use but not to activate the source 184 User Manual 780000102 09 Chapter 10 OFI Module LTS function Configuring the The measurement parameters can be accessed with the SETUP key measurement parameters of the power meter aveleng e Aut 850 980 1300 1310 1480 User 1597 nm BD ai EI n er a Unit dB Reference Level 0 0 dBm Attenuator compensation 0 0 dB C Alarms __ Alarms No N Fig 61 Configuration of power measurement Lambda Selecting wavelength Auto the wavelength of the input signal will be automatically detected and selected to perform the measurement 850 980 1300 1310 1420 1450 1480 1490 1510 1550 or 1625 nm measurement performed at specified wavelength User choice of wavelength on the next line in the menu User choice if the User option was selected in the Lambda line selection of the wavelength between 800 nm and 1650
94. Insert the CD in the drive is displayed 4 Click on Confirm The list of the software versions available on the PC is displayed next to the versions installed on the Base Unit 5 Click on Previous choice or Next Choice to display the previous and next versions available 6 Click on Confirm to start the upgrade of the selected software s meee NOTE The software versions list does not always appear cf previous ver sions as well as the Previous Next Choice buttons and the Con firm Continue key In this case the upgrading starts automatically Upgrading starts The Base Unit is automatically rebooted The installation process takes several minutes At the end the Base Unit is automatically restarted if the boot version is superior to version 01 16 Installation You must be equipped with a CompactFlash memory card with a from a Minimum capacity of 128 Mo CompactFlash memory card Insert the CompactFlash memory card in which the new unzipped MTS T BERD software has been loaded into the slot on the Base Unit provided 8000 only for this purpose 3 Connect the Base Unit into mains with the AC plug and switch it on Switch off and unplug your Base Unit Press the SYSTEM button then successively Expert tools gt Soft ware Upgrade gt Copy from CF 5 Click on Confirm The list of the software versions available on the PC is displayed next to the versions installed on the Base Unit 26 User Manual 780000102
95. OFiMedule Dynamic range 60 dB Accuracy Loop back 0 25 dB without optical connection uncertainty Side by side 0 15 dB without optical connection uncertainty Display resolution 0 01 dB Type of detector InGaAs Type of fiber 9 um Precision of length mea 1 5 3 to 200 km surement 1 After 15 minutes warm up Optical Return Loss 81xx OFI Module ORL measurement display Up to 65 dB range Display resolution 0 01 dB Accuracy tod User Manual 780000102 09 267 Chapter 16 Technical specifications Warning Standalone power meter Standalone power meter 81xx OFI Module functions Wavelength range adjust 800 to1650 nm able per 1 nm Selectable wavelength 850 980 1300 1310 1420 1450 1480 1490 1510 1550 1625 nm and one user defined Auto detection if signals 850 1310 1490 1550 1625 nm are emitted by a JDSU source Detected modulation 270 Hz 330 Hz 1 kHz 2 kHz Standard High Power Display range 10 to 60 dBm 26 to 55 dBm Accuracy 0 2 dB 0 25 dB 5 dBm to 50 dBm 23 dBm to 50 dBm Detector type Ge Filtered InGaAs 2 mm Display resolution 0 01 dB Type of fiber 9 um to 50 um Warning Warning for 82PRINTER module 81WDM 81PMD 81WDMPMD and UHD and VLR plug ins These are class A products In a domestic environment theses products may cause radio interference in which case the user may be required to
96. Table function is selected This parameter can be change exclusively if Auto Mode has been selected in the acquisition parameters Choose the curve which will by displayed automatically at the end of the acquisition Markers reflectometry curves with markers Dispersion dispersion curve User Manual 780000102 09 Lower wavelength Upper wavelength Inc wavelength Standardized to 1 km Unit Chapter 9 Measurement of chromatic dispersion Making a chromatic dispersion measurement Lower limit of the wavelength displayed on the curve and in the table from 1255 0 nm to 1640 0 nm Upper limit of the wavelength displayed on the curve and in the table from 1265 0 nm to 1650 0 nm Choose wavelength difference between two results memorized in the table from 0 10 to 50 nm the number of results memorized depends on the limit values and the value of the increment chosen max 512 results Yes The dispersion value obtained is standardized to 1 km that is to say divided by the length of the fiber expressed in km Select the unit to be used km kfeet miles Making a chromatic dispersion measurement Measurement process This measurement is made in 3 stages 1 Detection of end of fiber by a reflectometry measurement This stage is indispensable if the length of the fiber is not known 2 Placing of markers on the End of fiber event a second reflectometry measurement in the end of fiber
97. Type gt is set on DFB in the setup menu to recalculate DFB results Results appear automatically in the table File Management Storing OSA measurements Recalling OSA 120 files If Auto store has been selected then results will be saved automatically If not or if you want to save the results under another name directory etc 1 Click on FILE key 2 Select Setup with the Setup Explorer key 3 Modify the parameters you want 4 Click on Store Trace The trace is saved with the extension OSA Once an OSA file has been stored recall it using the Explorer 1 Select Explorer with the key Setup Explorer 2 Using directions keys select the directory and then the file to open 3 Click on Load 1 In case several DFB lasers are characterized at the same time User Manual 780000102 09 Chapter 6 Optical Spectrum Measurement File Management 4 Click on View Tace s or Load Trace Config The selected file is opened For further informations on file management see Chapter 13 File management User Manual 780000102 09 121 Chapter 6 Optical Spectrum Measurement File Management 122 User Manual 780000102 09 Polarization Mode Dispersion Measurement This chapter describes the different steps in carrying out a PMD measurement with a Base Unit equipped with a 5073PMD or 5073WDMPA plug in and with a 507XExt extension card with a 81PMD 81WDMPMD module or with the OSA 16X OSA 20X OSA 30X serie
98. UP menu Perform anew CD measurement Load the trace having the CD results up to the X event by pressing Load followed by Load Measure Ref in the File menu You may now see the CD results for the specific section 174 User Manual 780000102 09 Chapter 9 Measurement of chromatic dispersion Making a chromatic dispersion measurement amme tma im ma t a es ee Le 5 Fig 59 CD measurement on a section CD measurement The process to measure the CD results of a section located between 2 ona section using events X and Y is as follows stored traces o Load the trace containing the CD results up to the Y event by pressing Load followed by View Trace in the file menu Select in the CD SETUP menu Measure area Section Load the trace having the CD results up to the X event by pressing Load followed by Load Measure Ref in the File menu When storing the trace all those parameters will be taken into account and stored If the link is too long to make a CD measurement from one single extremity a bidirectional measurement can be done To do so the fibre must have specific elements for example reflective events or Fresnels such as the connectors measurable from the link extremities Measure uses two acquisitions which must be realised with the same AN CD module User Manual 780000102 09 175 Chapter 9 Measurement of chromatic dispersion File Management File Management Storing C
99. VLR modules The Source mode allows to activate the wavelength previously defined Pushing the START button activates the source in the CW mode Pulse This depends on the type of OTDR module See Typical specifications of OTDR plug ins on page 255 Range This depends on the type of OTDR module The possible range depends on the pulse length selected This range is given for each pulse length in the para graph Ranges on page 257 In Auto mode the range is selected as a function of the end of the fiber Resolution From 4 cm to 160 m according to module No calibration of the measurement The choice offered depends on the range and pulse selected In Auto mode resolution is selected automatically according to the last two parameters above Delete Traces on Start Yes as soon as the next acquisition is initiated with the START key the traces previously acquired are deleted No as soon as the next acquisition is initiated with the START key the the traces previously acquired are saved For a multi wavelength acquisition this parameter is automatically set to Yes Acquisition time From 5 s to 10 minutes max Test Auto The Test Auto key imposes the following parameters Acquisition parameters Laser All Mode Auto Saving parameters see chapter File management File naming cable fiber name wavelength pulse direction Increment Fiber number Yes Auto Store yes 46 User Man
100. Wavelength range full Normalized to km No File menu File naming Auto Auto store Yes Fiber Nb Increment Yes In standard mode you can set the parameters below User Manual 780000102 09 145 Chapter 8 Attenuation AP Setup menu Acquisition parameters FT Acquisition band Averaging acquisition Make Reference Measurements 146 profile NOTE When the composite power of the input signal is higher than 20 dBm a warning is displayed and the signal is cut off OESCL Full band will be considered for acquisition SCL Only S C and L bands shall be considered for acquisi tion Only considered for measurement not for reference it is used to improve the dynamic range of the unit No No average of the acquisition sample to be performed Low Low averaging 4 samples Medium Medium averaging 16 samples High High averaging 32 samples NOTE An increase of the averaging can improve the dynamic range to up to 5 dB Yes Option to select if you wish to perform a reference before performing the AP measurement No Default option The instrument automatically sets back to this option after the reference has been performed The date of the last reference is displayed below this field Fiber length The fiber length must be set to provide the AP result Use the numeric keypad or the direction keys to modify the fiber length Min 0 100 km Max 300 km
101. Yes the measurement is stopped if No the measure ment resumes 86 User Manual 780000102 09 Chapter 5 Bi directional OTDR Trace display functions Trace display functions Selection Local Remote Bi Directional amuna ime time he Fig 30 Butterfly representation of the bi directional measurement By selecting the View curve key the unit displays the traces and results like in classical OTDR mode adding bi directional measurement results In the Curve page the multi choice key allows to visualize successively the local trace the remote trace or both superposed mw NOTE The remote trace is reversed in order to superpose both traces in a butterfly fashion see Butterfly representation of the bi directional measurement page 87 1 In our example St Etienne corresponds to the extremity connected to the local unit Lyon corresponds to the extremity connected to the remote unit User Manual 780000102 09 87 Chapter 5 Bi directional OTDR Trace display functions NOTE You may only use this key to change page when the measurement is completed When the measurement is completed the Curve page corresponding to the local Base Unit is automatically displayed Ori gin if the direction of the link has been defined O gt E End if the direc tion of the link has been defined E gt 0 Origin and End Bi directional measurement may be performed using up to 4 different 88 traces A w
102. a different module from the current one when the trace was acquired then certain configu ration parameters cannot be updated A message then warns the user of this f several traces are selected the configuration used will be that of the first trace Ifthe number of traces added and the number of traces present is greater than 8 then the last traces added will not all be taken into account The configuration cannot be recalled if the trace was not originally created by a Base Unit Display of several Up to 8 traces in the same application OTDR OSA etc can be traces in overlay displayed simultaneously in overlay User Manual 780000102 09 237 Chapter 13 File management CD Rom burning To obtain a display of multiple traces two methods are possible Select all the files to be loaded at the same time see chapter Multiple selection of files on page 236 Add atrace at the same interval as those already displayed by means of the Add Trace s key CD Rom burning 1 2 3 4 A Go to the file explorer Select the directory and or the files to burn on the CD Click on Edit Click on Copy or Cut If you cut the file s to save it to on the CD they will not be on the Base Unit anymore Click on CD R tools If the CD Rom is a CD RW with data to be erased first click on Erase CD RW otherwise go to 8 A dialog box request to confirm that you want to erase existing data Click Yes to continue A
103. a page Before printing a page make sure you remove the cover and push it back until it holds open Press PRINT The page currently displayed will be printing You can see the icon at the top of the screen until the page is finished to be printed Paper used with internal printer is thermo sensitive and photo sensi AN tive Keep your printed documents away from heat and light 250 User Manual 780000102 09 Technical specifications This chapter shows the technical specifications of the OTDR plug ins of the Base Unit and options and accessories available The topics discussed in this chapter are as follows Reflectometer plug in available on page 252 WDM plug ins on page 259 PMD plug ins on page 261 CD modules on page 262 Information on fiber plug ins 5020TF and 82LFSM2 82LFSM4 on page 263 MTAU plug ins on page 265 BBS plug ins on page 265 OFI plug ins on page 266 Warning on page 268 User Manual 780000102 09 251 Chapter 16 Technical specifications Reflectometer plug in available Reflectometer plug in available Multimode OTDR plug in Wavelength 850 nm 1300 nm 850 amp 1300 nm Multimode modules 5021 MM 5022 MM 5023 MM Single mode The specifications of module 5023 correspond to those of modules 5021 and 5022 for their respective wavelengths
104. a transfer 232 Abbreviations for storage media 232 xvi User Manual 780000102 09 Table of Contents Directory edit function 2 0002 eee ee eee 233 Selection of directories 0 000 e ee eee 233 Edition of directories 0 000005 234 File editing function 0 eee eee eee 235 Format of files siu a eia 020000 235 Easy file selection 2 200020 eee eee 235 Multiple selection of files 236 Commands relating to files 0 236 Loading files and displaying traces 237 Simple loading 0 00 cece eee eee ee 237 Load with configuration 0 20 00 ee 237 Display of several traces in overlay 237 CD Rom burning 02 00 e eee e eee eee 238 Chapter 14 Macros 239 Calling the Macro function 20 00s0000s 240 Macro recording 000ee eee eee e eee eee 240 Standard MacrO anpa e aa e a aaa a 241 File macross 28 AT epee ca be pice ctr raaa Abed dee 241 Adding interaction to your macro 00 242 Inserting a dialog box 0 ee eee eee 242 Inserting a message 2 eee eee eee 242 Inserting a pause eee eee 242 Renaming a Macro 2 eee 243 The Rewrite config setting 0 eae 243 Replacing a macro 1 eee es 243 Removing a macro eee ees 243 Default Macro
105. address which appears in the TFTPD32 window 6 Run FTP server exe An error message will appear click on OK The window Pablo s FTP server is displayed Click on the green arrow or select menu File gt Start 7 On the Base Unit press the SYSTEM key then System Menu in Utility gt Upgrade Parameters gt Server adress enter the IP address previously noted see 5 above 8 Quit the SYSTEM menu and then press in succession Expert Tools gt Software Upgrade gt From Ethernet The message Indicate IP address of PC server appears 9 Click on Continue The list of the software versions available on the PC is displayed next to the versions installed on the Base Unit 24 User Manual 780000102 09 Chapter 2 Getting started Installing a new version of the software 10 Click on Previous choice or Next Choice to display the previous and next versions available 11 Click on Confirm to start the upgrade of the selected software s eee NOTE The software versions list does not always appear cf previous ver sions as well as the Previous Next Choice buttons and the Con firm Continue key In this case the upgrading starts automatically Upgrading begins The Base Unit is automatically rebooted Upgrading takes several minutes At the end the Base Unit is auto matically restarted if the boot version is superior to version 01 16 12 On the PC close the two windows opened to perform the installa tion Installa
106. al 780000102 09 Getting started The topics discussed in this chapter are as follows Adapting MTS 5000 series plug ins on page 18 Universal connectors and adapters on page 20 Installing a new version of the software on page 21 User Manual 780000102 09 17 Chapter 2 Getting started Adapting MTS 5000 series plug ins Adapting MTS 5000 series plug ins Installing a plug in ina receptacle and 18 removing it The plug ins of the MTS 5000 series are shorter than those of the 8100 series Before they can be used in the Base Unit an extension must be fitted ref E500TDRext for OTDR plug ins E507Xext for WDM plug ins To attach this extension remove the two screws on the plug in marked a below connect the extension to the rear of the plug in and fix the screws back in stick the adhesive label supplied with the extension on to the upper surface of the assembly the hold the two elements securely together MTS 5000 series Fixing Extensions plug in screws a Fig 9 Mounting the extension on a MTS 5000 series plug in A plug in may be inserted into either of the two slots provided for the purpose When a slot is vacant it is closed by means of a cover plate fitted with two captive screws like those on the plug ins User Manual 780000102 09 Chapter 2 Getting started Adapting MTS 5000 series plug ins Captive screws securing the plug in Fig 10 Rear
107. ally diminishing in form typical of the phenomenon of backscattering with superimposed peaks due to reflec tions from the ends of the fiber or other variations in the refractive index Optical fiber Reflectometer End of fiber Bi J i ora break Relative Splice Connection level dB H Attenuation i between 2 points Attenuation due Va to splice Attenuation due tothe connection Reflectance Distance km Fig 1 Trace showing typical backscattering From a backscatter trace it is possible in particular to determine the position of a section of fiber within a link The measurement result must reveal the attenuation the location of faults by their distance from a point of origin attenuation with respect to distance dB km the reflectance of a reflective event or a link User Manual 780000102 09 A Validity of Measurement Reflectance Chapter 1 Principles of measurement Principle of reflectometry measurements To locate faults a reflectometer measures only time Consequently group velocity must be introduced in order to determine the distance of the location This is done by introducing the refractive index of the fiber into the instrument UTI T in recommendations G 650 G 651 and G 652 give backscatter measurement as an alternative method for measuring attenuation the method of reference being the cut fiber The field of application of backscat
108. already in progress 1 Press the Advanced key 2 Select Del Res 3 Select Auto Mes Addition of markers Representation of the markers To carry out a measurement it is advisable to go into the SETUP menu and activate the alarm thresholds in Result Screens gt Alarms validate display of results on the trace in Results on Trace All You can place markers of events on the trace at the exact position where you want to carry out automatic measurements You can also manually place markers in addition to those positioned automatically during automatic measurement You can then start an automatic measurement to obtain the results on all the markers The markers are represented by the symbol if they are set during automatic measurements or using the Set markers key The markers are represented by hte symbol if they are set during manual measurements in Advanced mode To add markers of events 1 Select a cursor A or B 2 Use the direction keys to move the cursor to the place where you want to position a marker User Manual 780000102 09 65 Chapter 4 Reflectometry measurements Manual measurements Hints on the positioning of markers Deleting markers Press the key Add Marker 4 An event marker l is displayed at the position of the cursor and a measurement is carried out on the marker Measurement of slope before the marker starts just after the previous event or at the end of the dead zone
109. associated optical connectors One coupler Communication tool either GSM or telephone or optical talk set NOTE A description and methods used to measure the Polarization Mode Dispersion PMD is described in PMD principle page on 7 NOTE The PMD value obtained by the fixe analyzer method is the mean PMD value also desingated as expected PMD value PMD test setup menu 124 After connecting the fiber to be tested and all the equipment is switched on and ready for use you will then need to set up the Base Unit to perform a PMD measurement To access the PMD test setup menu press the SETUP button on the Base Unit The different measurement parameters are displayed 1 81XXX plug ins offer an integrated polarizer therefore don t require an OVP 15 User Manual 780000102 09 Chapter 7 Polarization Mode Dispersion Measurement PMD test setup menu You may either choose the default values by pressing the Test Atuo skey either define your own configuration Test Auto In Test Auto configuration the setups below are provided Configuration Setup menu ACQUISITION Sweep Single Averaging acquisition Auto Make reference No Reference date Long term No MEASURES Coupling Strong RESULTS SCREEN Alarms None Spectral Unit nm File Menu Filenaming Auto Cable_lId Fiber_Num Direction Autostore Yes Fiber Nbr Incremen
110. atic dispersion measurement on a fiber press the SETUP button The different measurement parameters will be displayed You have two choices press the Test Auto to obtain the default config uration or define your own configuration Parameters chosen by automatic configuration Laser Mode Analysis window All Auto Auto automatically positionned on the end of fiber Time of measurement 00 25 Reference wavelength 1550 nm Index 1 465 Measurement zone link Approximation formula Sellmeier 5T Type of fiber Standard 1st analysis window Dispersion Lower wavelength 1255 0 nm Upper wavelength 1650 0 nm Inc wavelength 5nm Standardized to 1km Yes Unit km User Manual 780000102 09 Acquisition parameters Chapter 9 Measurement of chromatic dispersion Configuring the CD test To define your own configuration choose the parameter to be modified using the direction keys then choose the option for this parameter with the keys ff ana Je lest Auto ine wavetengh 5 000 Mormalines to m ves Unit Fig 52 Configuration of CD test The configuration parameters of the CD test are described below Laser Choose to carry out the acquisition either on one of the 4 wavelengths proposed 1310 1480 1550 or 1625 nm oron all the wavelengths All Mode Choose the mode of acquisition Manual Acquisition carried out on an analysis window of width 500 m positioned manually in
111. ault Locator Mode Once the test is finished the instrument measures the end of fiber distance and display it with the unit chosen The Total Loss is also displayed Petter reese Fig 26 Fault Location Under the trace in the blue line are displayed the ORL value of the link the Launch Cable length if defined If one or several bends have been detected the screen displays the 3 first macro bends detected as well as for each one the distance and the delta loss between the two wavelengths dB Fig 27 Fault location Bend 74 User Manual 780000102 09 Chapter 4 Reflectometry measurements File Management The reflectometry trace is displayed with in addition a dotted vertical line set on the end of launch cable if the Launch Cable is defined in the SETUP menu and a dotted vertical line on the end of fiber ie The Cursor and Zoom keys are available Save the trace pushing the FILE button Once the trace is saved it can be recalled and displayed either in OTDR mode with analysis if the Standard Mode is selected in the configuration menu orin Fault Locator mode with indication on the end of fiber if the Fault Locator mode is selected in the configuration menu File Management Storing OTDR measurements Recalling OTDR files Once the measurements have been made results can be stored on different storage media If you had entered Auto store then the results
112. avelengths We can therefore analyze successively up to 4 couples of Origin and End traces In order to go from one couple to another activate the Wavelength Evt key select Wavelength and move from one trace to another using arrows These traces are OTDR traces All regular OTDR functions are proposed to modify the display Zoom Shift Cursors Evt Curve Table Full scale Just like in OTDR mode the user will be able to work on these traces in order to analyze the fiber by moving events consulting the selected trace associated result table asking for an auto measurement adding markers and doing manual measurements See Events page 57 Table of results page 59 Automatic measurement and detection page 64 Addition of markers page 65 and Manual measurements page 66 When the user comes back to OEO trace all modifications that can have been done on either the Origin curve or on the End curve are now taken in account The OEO measurement is performed again OEO trace Only one couple of OE and EO traces is displayed corresponding to one wavelength If the measurement has been performed on different wavelengths select Wavelength on the key Wavelength Evt in order to go from one couple of traces to another using arrows Functions such as Zoom Shift Cursors Evt Curve Table Full scale are all the same as for OTDR but the table result as well as the use of markers are specific to OEO measurements User Ma
113. by pressing the RESULTS button shows different zones displaying from top to bottom the mini trace in the upper part of the screen accompanied by the principal characteristics of the acquisition and of the file if the result is stored in memory the trace results associated with cursors A and B the trace proper see Trace display functions page 106 the table of results see Table of results page 110 The trace represents power in dBm as a function of frequency in THz or wavelength in nm The channels detected are represented by peaks User Manual 780000102 09 Chapter 6 Optical Spectrum Measurement Trace display functions NOTE If several acquisitions are performed the trace displayed is the one corresponding to the last acquisition Limited display band It is possible to a zoom on to just a part of the trace 1 by defining the start and or the end of the screen manually To do this go into the SETUP menu choose Wavelength Range then position Mode on Start End You can then define the frequencies or wavelengths of the start and end of the desired display band 2 by defining the center and the width of the spectrum manually To do this go into the SETUP menu choose Wavelength Range then position Mode on Center Width You can then define the frequen cies or wavelengths of the center and the width of the desired band width either side of this center Successive zooms on the different channels
114. cable is transferred to the begin launch cable The master Base Unit must indeed know both extremities of the fiber and will send the information to the slave Base Unit The direction of the link is defined by the master Base Unit which transmits the opposite direction to the slave Base Unit In the File configuration each Base Unit points to its own directory Only the master Base Unit may save a measurement lt Auto storage gt and lt File type gt parameters only concern the master unit and are not com pared or transferred to the slave Base Unit The list of lasers for which a measurement will be performed is set by the master Base Unit If these lasters are not all available on the slave Base Unit the list shall be restricted to the ones that are available When both menus SETUP and FILE are identical the validation symbol Ea is displayed and the process goes to Step 2 Step 2 The line lt Check if same fiber for both units gt becomes lt In progress gt If the master Base Unit successfully detects the other Base Unit at the extremity of the fiber under test the validation symbol is displayed and the process proceeds to Step 3 Otherwise the red cross gg is dis played and the measurement is stopped Step 3 The master Base Unit performs the acquisition using the first wave length in the list The message lt In progress gt is displayed on each Base Unit either in the Local column or the Remote column depe
115. can still be made though with reduced accuracy In this case the message Measurement 3 lambdas is displayed To optimize the measurements it is advisable not to place the markers on saturated Fresnels If this happens a message appears It is then advisable to add an on line attenuator The measurement of chromatic dispersion can use two modes of acqui sition automatic and manual To make a CD measurement quickly the automatic mode of acquisition is the easiest It enables the Base Unit to be automatically configured with the optimum parameters of acquisition for the link under test The 3 stages of the measurement described above are then carried out auto matically User Manual 780000102 09 Manual acquisition mode Chapter 9 Measurement of chromatic dispersion Making a chromatic dispersion measurement To start an automatic acquisition inthe Configuration CD test menu choose Mode Auto press the START STOP button The user can obtain the results step by step by using one of the following two methods End of fiber detection mode This mode must be used if the end of fiber has not been correctly detected or if the user wants to test part of the link It measures the length of the fiber before carrying out the CD measurement To select this mode Inthe Configuration CD test menu choose Mode End of Fiber Press the START STOP button The Base Unit then automati cally displays the resul
116. ce eee eee eee 164 Automatic acquisition mode 164 Manual acquisition mode 0 000 165 End of acquisition 0 eee eee eee 166 Choice of CD result 2 00000 eee 166 Return to this chosen screen 166 Configuration 0 0 0 cece eee 166 Information always displayed 20 eae 166 Detection of end of fiber 00 02 eee 167 Functions available 00 02000000es 168 Placing of markers 0 0 00 e eee eee ee 168 Information displayed for the markers 169 Delay dispersion and slope results 170 Information displayed for the results 170 Choice of curve 0 00 e eee 171 Functions available 0 22000 00s 172 AlarimS 3 afi4 6 att sacle eae Py Se ats acy dees SE 173 Measurement of CD on asection 0 5 174 Acquiring a trace for CD measurement on a section 174 CD measurement on a section using stored traces 175 File Management 200 eee eee eee eee 176 Storing CD measurements 20000 cence 176 Recalling CD files 0 0 0 0 c cece eee eee ee 176 CD standards and limits 00005 176 Source function 000 2 ees 179 Chapter 10 OFI Module 181 OFI module eide riian cei ede eee eee 182 Selection of the OFI module 55 182 LTS function cies ee a area 182 Princip
117. ce for calculation of delays obtained for the other wavelengths Refractive index Choose the group index N of the fiber from values lying between 1 30000 and 1 70000 NOTE This index value is unique and is not attached to a wavelength It is used for all acquisitions carried out on the CD tab and is saved with the trace NOTE It is advisable to use the index at 1550 nm to obtain a correct end of fiber measurement User Manual 780000102 09 Results Screen parameters Alarms Chapter 9 Measurement of chromatic dispersion Configuring the CD test Measurement zone Select the method of measurement of chromatic dispersion Link Measurement of the whole link from one end Section Measure one section from an extremity making two acquisitions on each extremity of the section See Measurement of CD on a section on page 174 Approximation formula Select the delay approximation formula to be used for generation of the dispersion and slope curves Quadratic A Ba Ca Recommended for G 653 fibers in the 1550 nm zone Sellmeier 3 term A BA2 CA72 Recommended for G 652 fibers in the 1310 nm zone Sellmeier 5 term A BA CA D4 Ea Recommended in all other cases including non homogeneous fibers see Most suitable method of approximation according to trace zone on page 15 Fiber Type Choose the fiber type you want to measure Standard Special Select Special for a link having a fiber section with shif
118. channels as shown above On the Trace Channel key select the Channel function Use the and p keys to move the zoom on to the successive channels The Shift function is used to displace the displayed section of the trace by pressing the direction keys The horizontal shift is performed maintaining the point of intersection between the trace and the selected cursor at the same level scrolling the trace horizontally while following it vertically so that it never goes off the screen To use this function Select the zoom factor as described above Choose cursor and cursor position On the Zoom Shift key select Shift Use the direction keys to shift the trace in the desired direction NOTE For a Chromatic Dispersion curve click on Config in order to display the zoom and shift functions The Zoom Auto key alows to go to an optimized display of the trace To display the entire trace with no zoom or displacement either press the Full Scale key User Manual 780000102 09 Chapter 3 Graphical User Interface Overlay trace function or with Trace selected on the Trace Event key press the amp button Overlay trace function This very useful function enables up to eight traces to be displayed on the screen at once either to compare traces acquired on a number of different fibers in the same cable orto observe changes over time in traces taken of one and the same fiber
119. cifications Reflectometer plug in available OTDR plug ins Module Standard EN 60825 1 Ed 1 2 2001 08 FDA21CFR 1040 10 Multi mode MM at 1300 nm Class 1M Class 1 at 850 nm Class 1 Class 1 Single mode SR SRe DR Class 1 Class 1 Single mode HD VHD UHD VLR at 1310 nm Class 1M Class 1 at 1550 and 1625 nm Class 1 Class 1 Ranges Ranges for MM modules 3 ns 20 ns 50 ns 200 ns 0 5 km X X X 1km X X X X 2 km X xX X X 5 km X X X X 10 km X X X X 20 km X X X X 40 km X X X 80 km X Ranges for SR and SRe modules 10 ns 30 ns 100ns 300ns 1 us 3 us 10 us 2 km X X X 5 km x xX xX X 10 km Xx xX X xX X 20 km x xX xX xX x xX 40 km x x x x x x xX 80 km X x x x x 140 km x x x X 260 km xX User Manual 780000102 09 257 Chapter 16 Technical specifications Reflectometer plug in available Ranges for DR plug ins 2km 5 ns 20 ns 100 ns 300 ns 1us 10 us 5 km 10 km 20 km x K x x 40 km x x K x x 80 km xX K K XxXxX x 140 km XxX K x KL KL K 260 km x x Kx 1K KL XK x K x x x x x x x Ranges for HD plug ins 5 km 10 ns 30 ns 100 ns X 300 ns 1us 10 us 20 us 10 km 20 km 40 km 80 km x K x x x 140 km x K x x x x
120. ck 244 recording 240 renaming 243 rewrite 243 Standard 241 Macro bend 48 Mail file expedition 229 OFI FOX function 201 Markers OTDR 65 addition 65 delete 66 hints 66 representation 65 Measurement attenuation specif 253 distance specif 253 276 principle 1 reflectance specif 253 reflectometry specif 253 Memory see File Modules BBS specif 265 CD specif 262 fibers 263 MTAU specif 265 OTDR list amp refs 252 OTDR range 257 PMD specif 261 WDM specif 259 MTAU auto mode 211 configuration 209 manual mode 210 sequence test configuration 212 perform 213 O OFI Attenuator ext powermeter 185 FOX 191 configuration 191 distant module 199 measurement acquisition 198 results display 200 send message 201 taking ref loss 194 taking ref ORL 196 Zero adjustment ORL 197 LTS attenuation measurement 13 183 Configuration 185 Connection 184 insertion loss measurement 14 183 power measurement 13 182 source configuration 187 Manual ORL 203 Measurement acquisition 204 reference 203 results 204 Power meter User Manual 780000102 09 Index measurements 191 ref measurement 190 zero setting 190 Source connection 184 Unit of power 185 Options 269 ORL manual measurement OFI 203 measurement OTDR 70 on saturated trace OTDR 70 OTDR acquisition parameters 45 automatic acquisition 53 Configuration 44 manual acquisition 55 manual measurement ORL 70
121. d If there was only one marker either on the origin trace or on the end trace a second marker is added on the trace when none was present User Manual 780000102 09 89 Chapter 5 Bi directional OTDR File management Markers display Markers gt are available on the trace taken from the origin Markers 4 are available on the trace taken from the end NOTE Acquisitions must be done with the same resolution If not the addi tion of markers can not be performed perfectly File management Storing OEO At the end of a bi directional measurement the user has the possibility measurements t save the origin trace as well as the end trace for each wavelength Recalling OEO 90 traces either in a single OEO gt file or in two different SOR files Traces may be stored manually or automatically on the master unit They can be stored manually on the slave unit If you had entered Auto Store then the results will be saved automati cally If not click on FILE to access the OTDR File menu and select the right format Then press the Store Trace key Recalling a OEO gt file If the OEO software option is available loading a OEO file with the Load key followed by View Trace key will open automatically the OEO OTDR tab in order to display the OEO trace Recalling two SOR files Wether the OEO software option is available or not if the two SOR files corresponding to a
122. d Fresnel 3 at 1550 nm on a G652 fiber 75 km long Source specifications Module 5082 CD Wavelength DFB lasers 1310 1480 1550 1625 5nm 5nm 5nm 5nm Spectrum width lt 10pm Power stability over 24 h 0 10 dB Output power calibrated Output power calibrated 1 5dBm 3dBm 3 dBm 3 dBm Output power Variable 10 dB with respect to calibrated power 1 after 15 minutes pre heating Laser class of source of CD modules At 1310 1480 1550 1625 nm laser class 1 262 User Manual 780000102 09 Sp cifications du r flectom tre Wavelength DFB lasers Chapter 16 Technical specifications Information on fiber plug ins 5020TF and 82LFSM2 82LFSM4 Module 5083 CD 1310 5nm 1480 5 nm 1550 5 nm 1625 5nm CEI dynamic guaranteed 35 dB 33 dB 32 5 dB 33 dB Dynamic RMS typical 39 dB 38 dB 37 dB 37 dB Distance 380 km Pulse width 10 ns to 20 us Dead Zone Event EDZ Attenuation ADZ 6 m max 30 m 1 Specified minimum value corresponding to the one way difference in dB between the level of back diffusion extrapolated at the beginning of the fiber and the level containing 98 of noise after 3 minutes of averaging 2 Typical value corresponding to the difference in dB between the level of back diffusion extrap olated at the beginning of the fiber and the RMS noise level after 3 minutes of averaging 3 Value with
123. dard bandwidth of 0 1 nm The most important item of equipment for carrying out these tests on WDM systems is the optical spectrum analyzer OSA It can be connected at critical measurement points in the WDM system to the ends of the links or to the amplifier locations 1 Amplified Spontaneous Emission User Manual 780000102 09 5 Chapter 1 Principles of measurement Principle of WDM OSA analysis Measurement results DFB analysis The optical analyzer displays a spectrum representing all the channels The measurement results are shown in the form of a complete spectrum analysis and a table of the parameters relating to each carrier The optical spectrum analyzer performs automatic detection and measurements on each channel The number of channels and the composite power are shown and for each channel the wavelength the interval between channels the power level the signal to noise ratio The total power of the system can also be given To qualify the amplifier gain tilt and slope can be calculated In principle amplification should be flat right across the WDM spectrum In order to ensure the best BER ratio it is sometimes necessary to be able to test DFB lasers widely used in DWDM technology DFB measurements are the following SMSR Side mode Suppression Ratio the amplitude difference between the main spectral component and the largest side mode Mode Offset Wavalength separation exp
124. directional measurement on both units Results storage in a single OEO file or in two SOR files All this test procedure is fully automatic and all results are immediately accessible on both units User Manual 780000102 09 79 Chapter 5 Bi directional OTDR Configuration of bi directional measurement Configuration of bi directional measurement 80 To access the OEO configuration menu press the button SETUP from the Base Unit OEO parameters are now displayed Please check that the OEO OTDR tab has been selected Acquisition parameters Acquisition parameters are the same as for OTDR measurements see Configuring the reflectometry test page 44 for their description Only different or extra parameters are presented here in this chapter g a flange Reselution Oetete traces on Start Yes Acq lene Detection Group Natr index Scatter Coeficieat Launch Cable Start Evera 1 Evert 2 Evert 3 None Ne Nesetts On Trace Graphics Only Ghosts Automatic Total Ort Yes Grid Uait ESimowa Eooomwn iis Fig 28 Laser User Manual OEO test setup menu Acquisition will be performed on all selected wavelengths as long as they are available on the remote OTDR as well If not acquisition will be performed on all wavelengths selected and common to both OTDRs Please see the recommendation on page 78 about using the same type of OTDR 780000102 09 Measurement parameter
125. dispersion wavelength must not be in the range of the channels this would generate 4 mixed waves and would oblige consequent irregular spacing between channels Standards relating to chromatic dispersion Standard Description ITU T G 650 Definition and test method for parameters appropriate to sin gle mode fibers ITU T G652 Characteristics of a cable of single mode optical fibers ITU T G653 Characteristics of a cable of single mode optical fibers with offset dispersion ITU T G 655 Characteristics of a cable of single mode optical fibers with non zero offset dispersion 9099 Optical fibers Part 1 generic specification General IEC 60793 1 Optical fibers Part 1 42 Method of measurement and test of 42 procedures Chromatic dispersion IEC 61744 Calibration of testers of chromatic dispersion of optical fibers Measurement of chromatic dispersion of multimode optical TIA EIA fibers with graded index and single mode by measurement of FOTP 168 group spectral delay in the domain of time TIA EIA Measurement of chromatic dispersion of single mode optical FOTP 169 fibers by the phase shift method TIA EIA Measurement of chromatic dispersion of single mode optical FOTP 175 fibers by the differential phase shift method GR 761 OEE ip CORE Generic criterions for testers of chromatic dispersion GR 2854 Generic conditions Compensators of chromatic dispersion of COR
126. e 1310 1550nm E8126UHD Very long distance 1550 1625 nm E8129UHD Very long distance 1310 1550 1625 nm E8136UHD 1 Supplied with its manual E8100MOX X depends on language Specify optical connector of each OTDR plug in Oblique universal connector not available on 812XMM OTDR plug ins 270 User Manual 780000102 09 Chapter 17 Options and accessories References of measurement plug ins OTDR plug in for calibration reports Reference OTDR plug in for calibration ratios E810TDRCR VLR OTDR plug in Reference Very Long Range 45 dB 1310 nm OTDR plug in 8114 VLR Very Long Range 43 dB 1550 nm OTDR plug in 8115 VLR Very Long Range 43 dB 1625 nm OTDR plug in 8117 VLR Very Long Range 43 dB 1625 nm OTDR plug in 8117R VLR with filter Very Long Range 1383 nm OTDR plug in 8118 VLR Very Long Range 1490 nm OTDR plug in 8118 VLR 49 Very Long Range 45 43 dB 1310 1550 nm OTDR 8126 VLR plug in Very Long Range 43 43 dB 1550 1625 nm OTDR 8129 VLR plug in Very Long Range 45 43 43 dB 1310 1550 1625 nm 8136 VLR OTDR plug in Very Long Range 45 43 43 dB 1310 1490 1550 nm 8138 VLR 49 OTDR plug in Very Long Range 45 43 43 dB 1310 1383 1550 nm 8138 VLR 38 OTDR plug in Very Long Range 45 43 43 dB 1310 1383 1550 nm 8148 VLR 83 OTDR plug in Very Long Range 42 40 40 40 dB 1310 1490 1550 8148 VLR 49 1625 nm OTDR plug in WDM plug ins Reference WDM plug in Band S C L E81WDM PMD plug ins
127. e Base Unit NOTE This virtual control buttons bar is especially useful when the Base Unit screen is exported on a remote PC see the User Manual of the Base Unit Although it is intended primarily to replace the Edit menu of the Base Unit the external keyboard can replace all the buttons and keys of the Base Unit except the ON OFF button The menu keys to the right of the screen are replaced by the func tion keys F1 to F7 The buttons below the screen are equivalent to Ctrl a letter see table below The direction keys have the same function on the external keyboard and on the Base Unit User Manual 780000102 09 Chapter 3 Graphical User Interface Functions relating to display of a trace Function on the Base Unit External keyboard SYSTEM Ctrl Y SET UP Ctrl U PRINT Ctrl P FILE Ctrl F RESULTS Ctrl R START STOP Ctrl S SCRIPT Macro Ctrl M Menu keys 1 to 7 from top to bottom F1 gt F7 SAVE AND QUIT EXIT Entr e Enter QUIT WITHOUT SAVING ABORT Escape Echap Editing text To use the external keyboard to insert a name or identification in the set using the up menus or a Note in the table of results external _ keyboard _ press Enter to go into the Edit menu type the text press Enter to leave the Edit menu Pressing the Esc key will close the Edit menu without saving the text Functions relating to display of a trace T
128. e necessary to fix a power threshold level only peaks that exceed this threshold will be considered as channels and included in the table of results To display or modify this threshold press the SETUP key then select Signal threshold Modify the value to position it on Auto or fix a threshold value Display of a grid The display window of the trace can include a grid to facilitate verification of the position of the channels Several grids are possible see the chapter Parameters of display and analysis of the results page 102 1 The Auto value is obtained by continuing to reduce the value of the threshold below the minimum value of 79 9 dBm User Manual 780000102 09 Chapter 6 Optical Spectrum Measurement Trace display functions Display of total power between cursors To display on the trace the total power between the two cursors A and B Place the cursors at the desired positions Press the Advanced key then Total Power A lt gt B The space between the trace and the two cursors is greyed out and the power is displayed in the form P 4 95dBm Pressing the key T A lt gt B a second time removes the result of the total power measurement Display of gain Tilt delta and gain slope results The Base Unit can display two additional results The gain tilt that is to say the difference between the max and min values of the peaks of the complete signal spectrum between the cursors T
129. e not connected on the same fiber If the two units are connected on the same fiber the link does not appear cut When a measurement is processed the fiber is displayed in red When the fiber connection is established information providing the module type and available wavelengths is displayed for both local and distant units 82 User Manual 780000102 09 Chapter 5 Bi directional OTDR Performing a bi directional measurement 2 User guide zone A blue banner is displayed in the center of the screen where operation messages are displayed The icon for keeping all events in memory is displayed in this zone if the key Lock Evt Free Evts is set on Lock Evt In this case the following measurement is performed using those markers see Memorization of the position of events page 71 NOTE This function keeps markers in memory for both local trace and dis tance trace 3 Measurement status zone When a bi directional measurement has been launched all the different steps in the measurement process are presented in this zone Each one is detailed later in this chapter NOTE The general information banner is displayed at the top of the screen as for all other tabs When a OEO measurement is performed Data 2 and Remote mode ffx icons are displayed as soon as a data connection is established L includes the serial numbers of the mainframe and module as well as available wavelengths 2 requires active data connection Use
130. e overlay menu press the Exit key Saving when the instrument is shut down 42 When the instrument is switched off all the parameters and all the traces are saved and will all be recalled at the next start up User Manual 780000102 09 Reflectometry measurements Pressing the START STOP key is all that is needed to start or stop a measurement However it is necessary to configure the measurement and the type of results desired This chapter describes the different stages in a reflectometry measure ment made using an OTDR plug in and the OTDR function of a 5083CD plug in The topics discussed in this chapter are as follows Selecting the function on page 44 Configuring the reflectometry test on page 44 Acquisition on page 51 Trace display functions on page 56 Events on page 57 Table of results on page 59 Automatic measurement and detection on page 64 Addition of markers on page 65 Manual measurements on page 66 Memorization of the position of events on page 71 Fault Locator Mode on page 72 File Management on page 75 User Manual 780000102 09 43 Chapter 4 Reflectometry measurements Selecting the function Selecting the function Press the SYSTEM button If the instrument is equipped with several plug ins or if the sole module performs several functions use the direction keys 4 and
131. e progression state of the calibration at the bottom of the screen Wait for the calibration to be fully completed before continuing 3 Press the button SETUP to access to the Base Unit configuration menu for Spectrum analysis Use the keys and W to move the cursor to the different parameters and the keys lt q and to modify a value Performing the itis recommended before performing an AP measurement at least once reference 2 ay to carry out a reference measurement of the broadband source To make a reference connect your OBS 15 or BBS to your Base Unit just like shown on figure below Coupler SO Jumper Signal input socket situated on the OSA module Fig 48 Reference measurement 148 User Manual 780000102 09 Chapter 8 Attenuation profile AP Measurement 1 Check that the option Make Reference is set to Yes in the configu ration menu NOTE When a reference is performed acquisition parameters are not taken in account 2 Press the button START STOP to start the reference of the broad band source To display the results press the button RESULTS Once the reference is correct AP measurement may take place A 1423109 re nra LAE Si ian nna AD 0000m oom 5 i w Fig 49 Example of a correct reference for a broadband source A bargraph shows if the source power level will allow to perform AP measurements correctly Weak we Strong If the reference measurement does not provide a correc
132. e same standard information see Information always displayed on page 166 together with the following information The curve requested delay dispersion or slope is displayed User Manual 780000102 09 Choice of curve Chapter 9 Measurement of chromatic dispersion Making a chromatic dispersion measurement A line of characteristics specific to the measurement of slope delay and dispersion is displayed above the trace Pony Ares LO Dispersion wavelength zero So Slope associated with LO Lref Length of the fiber at the reference wavelength Wref Reference wavelength Fit Formula of approximation used A line of the results table By selecting Table with the Trace Table key 8 lines of the of results can be displayed below the trace or 20 lines with no trace d Dispersion psikm ren Fig 56 Measurement of dispersion If the delay curve was requested it will be possible to change over to the dispersion curve and add the slope curve to it Click on Add Slope If the dispersion curve was requested it will be possible to add the slope curve and change over to the delay curve If the slope curve was requested it will be possible to add the dispersion curve and change over to the delay curve User Manual 780000102 09 171 Chapter 9 Measurement of chromatic dispersion Making a chromatic dispersion measurement When a curve is added the screen is divided so that both curves can be displayed
133. e very useful to you They will give you some time to switch to another fiber if necessary let you play a macro toa partial state and stop or simply just bring your attention after or before a specific action is performed To access all these features click on SCRIPT during the learning process of a macro just like if it was done Several soft keys will become avail able Click on the soft key Insert Dialog Box The dialog box editor is displayed Enter the content of your dialog box and press confirm when you are done Click on the soft key Insert Message The Message text editor is displayed Enter the content of your message and press confirm when you are done NOTE Dialog boxes and messages serve different purposes when the macro is played back A message will just appear to bring your attention toa specific point and wait until you are ready to continue A dialog box will give you the choice between continuing to play the macro or aborting it letting you partially play a macro in some cases Click on the soft key Insert Pause This action will automatically make the macro wait for a user action NOTE During playback you can see the icon MII when a pause is encoun tered Press any key to restart the playback User Manual 780000102 09 Renaming a macro The Rewrite config setting A Replacing a macro Removing a macro Chapter 14 Macros Macro recording Whether you just created a new macro or you wi
134. eat the AP measurement for every fiber to be tested it will have to be connected to the OBS 15 User Manual 780000102 09 Chapter 8 Attenuation profile Performing a AP measurement Signal input socket on the pa OSA plug in meee NOTE You may modify the fiber length at any time without performing a mea surement again The AP result pro kilometer will be recalculated auto matically User Manual 780000102 09 151 Chapter 8 Attenuation profile Display of AP results Display of AP results The AP results screen presents different zones see Example of a AP result Showing profile on page 152 Trace display Module Wavelength Fiber File name Direction reference range Length eT one tite ane t etn an Current selected Profile attenuation Total loss dB Results table wavelength dB km Fig 50 Example of a AP result Showing profile mw NOTE When several acquisitions are performed the trace resulting from the last acquisition is displayed Spectrum Profile For a reference measurement only the spectrum is available For a AP measurement two different graphs may be visualized 152 User Manual 780000102 09 Chapter 8 Attenuation profile Display of AP results The first graph shows the final spectrum see figure Example of a spec trum view after a measurement on page 153 A
135. einserted while the instrument is switched on During a data transfer with the option Data Talkset the distant Base Unit hard drive connected by the fiber is displayed as a storage media File and directory edition features may all be used in the same manner with this storage media as with the other ones The abbreviations used in the explorer for the different storage media are Abbreviation Storage medium harddisk Hard disk User Manual 780000102 09 Chapter 13 File management Explorer Function Abbreviation Storage medium disk Internal flash memory if no hard disk floppy Floppy disk cdrom CD ROM usbflash USB memory key cflash Compact Flash memory card masterdisk Hard drive from the remote Base Unit which initiated the connection slavedisk Hard drive from the remote Base Unit which accepted the connec tion one has initiated the connection Nevertheless possible actions on these disks are all the same There are no master slave relations for data exchange Remote hard drives are seen with different names according to which Directory edit The editing functions are similar to those of other explorers The directo function ies are at the top left of the screen If the cursor is in this part the func tions proposed by the keys are specific to the management of the directories Selection of If the cursor is in the left hand part of the screen directories
136. ementing fiber number on page 224 Certain parameters are not valid in the configuration selected Thus if no tube is selected in Cable Content all the lines relating to the tube concept will be deactivated grayed out in the menu Tube Coding Ribbon Coding Fiber Coding Code Definition User Manual The lines Tube Coding Ribbon Coding and Fiber Coding enable selection of the color coding of the tube the ribbon and the fiber from 5 different codes described below TIA USER 1 USER 2 USER 3 and USER 4 The Code Definition line opens a sub menu with which the different color codes possible on the 780000102 09 227 Chapter 13 File management File configuration menu instrument can be displayed and modified see figure Color code definition on page 228 Five different codes can be managed by the Base Unit including a stan dard code The standard code TIA may be displayed but it cannot be modified The other codes called by default USER1 USER2 USER3 and USER4 can be entirely personalized Edited code selects the code for display or modifica tion Copy name to give a new name to the code selected press the key which calls up the edit menu View codes displays the color codes 1 to 12 or 13 to 24 Code 1 23 Use the arrow to modify the codes if necessary Edited Code UCE USER 1 USER 2 1 To 12 USER 4 Fig 85 Color code definition Operator Use the arrow p to enter the name o
137. emorized the result screen displays the traces acquired the ee ae ae tenme Fig 53 Traces acquired The Delay Dispersion and Slope keys give access to the corre sponding results which depend on the zone of measurement the formula of approximation and the upper wavelength and lower wave length selected in the Configuration CD TEST menu See Delay disper sion and slope results on page 170 To return to the choice of CD result to be displayed press the Exit key To operate on these traces positioning markers zoom shift etc press the Config key see Placing of markers on page 168 Whatever the mode of acquisition chosen the following information is always displayed on the result screen Wavelength User Manual 780000102 09 Detection of end of fiber Chapter 9 Measurement of chromatic dispersion Making a chromatic dispersion measurement Name of module Pulse width Resolution Acquisition time Refractive index Name of file if stored Fiber number Direction of propagation The information associated with cursors A and B the A and B hori zontal and vertical values the A B horizontal and vertical difference as an absolute value The difference value in dB expressed per kilometre The alarm indicator P or x if Alarms is active gt This mode must be used if the end of fiber has not been correctly detected in auto mode see End of fibe
138. emory explorer of the Base Unit the measurement results etc Refer to the chapter dealing with the measure ment in progress When the instrument performs several different functions OTDR WDM Power Meter etc the various configuration or results pages are acces sible from tabs To change from one tab to another the button selecting the page must be pressed To example onthe Results page to change from one tab to the other press the RESULTS button User Manual 780000102 09 31 Chapter 3 Graphical User Interface Display screen Soft keys Icons 32 onthe measurement configuration page to change from one tab to the other press the SETUP button On the file configuration page to change from one tab to the other press the FILE button NOTE There is a tab for each different type of measurement OTDR SM OTDR MM OSA Power Meter The tab of a function is displayed if and only if a plug in corresponding to this type of measurement has been inserted in the instrument or if a file of the type of this measure ment is open If two plug ins of the same measurement type are present then only one plug in is active so only one tab will appear for this measurement To change the active plug in go to the SYS TEM screen and select it there A small icon may appear in the left corner of each tab according to the status of the corresponding module The icon signification is the following Noic
139. en terminates the acquisition The acquisition is carried out with the parameters previously selected in the Acquisition menu It may be stopped at any time using the START STOP key To configure a manual acquisition of the fiber under test follow the proce dure described below in the SETUP menu see Acquisition parameters on page 45 1 Select the wavelength on the Laser line User Manual 780000102 09 55 Chapter 4 Reflectometry measurements Trace display functions On the Mode line select Manual o On the Pulse line select the required pulse length from the values proposed Select the required Range from the values proposed Select the Resolution On the Acquisition Time line select the duration of acquisition N Oo o fF Press the START STOP key to start the acquisition The red indicator goes on to show that the Base Unit is in process of acquisition and the screen displays the trace in process of acquisi tion The quality of the connection is displayed for a few seconds then a bar graph shows elapsed and remaining acquisition time 8 A the end of the acquisition the trace is displayed and an automatic measurement is started mw NOTE To stop the acquisition the START STOP key may be pressed at any time Then an automatic measurement is carried out but certain events cannot be detected a manual measurement must then be car ried out right to the end Multi if the plug in possesses several lasers
140. ength from 60 to 40 dBm selected with the direction keys meee NOTE To copy one value of the Lower or and Upper threshold for all wave lengths select the reference value and click on Update for All Wavel mw NOTE A continuous push on the direction keys increments the value by 10 dBm 186 User Manual 780000102 09 Configuring and displaying the parameters of the source Chapter 10 OFI Module LTS function 21625 Hetere o tevet vom 00 830 Str din Fig 62 Source configuration When the laser is on the icon A is displayed The parameters of the source can be accessed directly on the results screen of the LTS module by pressing the Source Configuration soft key Wavelength Mode User Manual To change the wavelength when a multi wavelength source is present depending on option The wavelength value is displayed To vary the mode of emission of the source Possible modulation values are 270 Hz 330 Hz 1 kHz 2 kHz Auto the sources emit on determined frequencies to enable the power meter to detect the wavelength used automatically Twintest cyclical emission on all available wavelengths for a few seconds on each wavelength compatible with the JDSU OLP 5 6 15 16 18 780000102 09 187 Chapter 10 OFI Module LTS function 188 Display of results and command Result of the measurement in progress Table of resul
141. ents insertion loss reflectometry chromatic dispersion spec trum and polarization measurements with a single 8000 Base Unit without ever disconnecting the fiber Connections The MTAU plug ins offered are of two types 1 A common port with 2 ports A and B 2 A common port with 3 ports A B and C and a mirror The fiber to be tested must be connected to the common port The other ports are connected to the measurement plug ins e g OTDR CD OSA PMD or an external instrument Two 8000 Base Units can be used at each end of the link under test for maximum efficiency and to carry out the largest number of tests in both directions mw NOTE The MTAU is not directional It is possible to use the common port either as an input or as an output 1 Equipped with suitable plug ins for example an OTDR CD plug in and a WDM PMD plug in 208 User Manual 780000102 09 Chapter 11 Multi Test Access Unit Configuration Inputs for connection to the different plug ins Output fiber under test Fig 75 Example of an MTAU plug in with 1 common amp 3 ports plus 1 mirror NOTE It is possible to use the Mirror port MTAU with 4 ports to enhance reflectance at the end of the fiber and obtain more effective CD results In this case the input port at the extreme end of the fiber becomes a mirror Configuration To use the MTAU function go into the SYSTEM menu and select the icon using the key amp Then go
142. epresented in a different color it is automatically offset with respect to the new trace Anew acquisition can then be started gee NOTE In the case of Multi trace display with multiple wavelength acquisition when the START key is pressed all the traces displayed are deleted to leave room for the new acquisitions Swapping Measurements can only be made on the active trace and not on overlaid overlay traces traces To make measurements on a trace in overlay it must first be swapped with the active trace To do this press the Trace key then the q and p keys as many times as necessary User Manual 780000102 09 41 Chapter 3 Graphical User Interface Saving when the instrument is shut down Trace resulting from the difference between two traces OSA module Removing a trace Removing a trace in overlay Removing all the the traces in overlay Quitting the overlay menu It is possible to obtain the trace corresponding to the point by point differ ence between the current trace and the trace in overlay if only two traces are displayed simultaneously To do this press the 2 Traces Diff key The screen will then display the two traces in overlay and the trace resulting from the Difference It is possible to remove a trace displayed To do this first activate it see previous paragraph then press Remove Trace To remove all the traces except the current trace press the key Remove Traces To quit th
143. ere will be one single measurement and the display of its result Statistics In this mode the number of samples concerned by the statistics must be entered next parameter Filtering only appears when using some modules of the series OSA 16X OSA 20X OSA 30X High Sensitivity Line not available on modules OSA XXX 1 normal mode and 1 5 seconds in real time mode 2 normal mode and 3 seconds in real time mode User Manual 780000102 09 Chapter 6 Optical Spectrum Measurement WDM OSA test configuration No The range of power extends from 15 to 65 dBm Yes The range of power extends from 25 to 75 dBm Auto Automatic detection of the range of power Averaging No Weak Average Strong This function can reduce the noise level of a value up to 5 dB When the acquisition is averaged a bar graph showing the state of advancement of the averaging is displayed at the bottom right of the screen Resolution Max maximum resolution of the filter lt 0 1 nm 0 1 0 2 0 3 0 4 or 0 5 nm for 507XXX series and 81 XXX series plug ins 0 1 0 2 0 3 0 4 0 5 1 2 or 5 nm for modules OSA 16X OSA 20X OSA 30X Number of sweeps In Statistics mode this must be selected between 2 and 1000 Long Term NOTE A long term measurement can be done only if the Sweep parameter is on Statistic mode No Manualthe measurement is done manually once the key Stop Wait is pressed Peri
144. escription Text you must type exactly as shown appears in this type face Variables appear in this type face Book references appear in this typeface A vertical bar means or only one option can appear in a sin gle command Square brackets indicate an optional argument Slanted brackets lt gt group required arguments Example Type a set exe in the dia log box Type the new hostname Refer to Newton s Telecom Dictionary alble platform login platform name lt password gt Table 3 Keyboard and menu conventions Description A plus sign indicates simulta neous keystrokes A comma indicates consecutive key strokes A slanted bracket indicates choosing a submenu from menu Example Press Ctrl s Press Alt f s On the menu bar click Start gt Program Files Table 4 Symbol conventions This symbol represents a general hazard xxiv User Manual 780000102 09 About this guide Conventions This symbol represents a risk of electrical shock NOTE This symbol represents a Note indicating related information or tip This symbol located on the equipment or its packaging indicates that the equipment must not be disposed of in a land fill site or as munici pal waste and should be disposed of according to your national regu lations Table 5 Safety definitions WARNING Indicates a potentially hazardous situation which if not avoided co
145. esults to be retrieved It is saved with the extension LTS or ORL The second file is an ASCII file using tabulations to separate values It is saved with the extension txt and cannot be opened by the Base Unit It has been designed to be used with a spreadsheet program on a PC where it allows all LTS measurement results to be retrieved and formatted in a customized table For more details on file management see File management page 219 To recall a LTS FOX or ORL file Go to the Explorer Select the directory Select the file to load Click on Load Click on View Trace s or Load Trace Config The selected file is opened a A OO N User Manual 780000102 09 Multi Test Access Unit This chapter describes the function of the MTAU Multi Test Access Unit module and its use The topics discussed in this chapter are as follows Function of the MTAU module on page 208 Connections on page 208 Configuration on page 209 Manual mode on page 210 Auto mode on page 211 The main application of this module is to be used together with the 8000 platform User Manual 780000102 09 207 Chapter 11 Multi Test Access Unit Function of the MTAU module Function of the MTAU module The MTAU is a passive module switch used to route the signals from the different measurement plug ins to one and the same fiber The advantage is to be able for example to make all the characterization measurem
146. existing file this function is pos sible in the Explorer menu see Storage media on page 231 Thus the new name will not be taken into account until the trace is saved again i Editing the name enables the trace to be saved in a new file with a Auto store f this option is validated the trace or traces resulting from each acquisi tion are automatically saved according to the filenaming rules Fiber This paragraph gives the fiber information for the extremity defined in information Direction If the direction is O gt E then the fiber information concerns the origin If the direction is E gt O it concerns the extremity User Manual 780000102 09 223 Chapter 13 File management File configuration menu Fiber Name Fiber code Incrementing fiber 224 number NOTE The information entered in the Fiber information window concerns the editing and or modifications of the cable and fiber parameters When a trace is recalled without recalling its configuration the parameters of this trace will be present only in its signature This name consists of an alphanumerical part entered by means of the edit menu followed by the fiber number This number is automatically incremented or decremented as a function of the fiber code The fiber code corresponds either to the fiber number or to a color code according to the choice made in Cable structure gt Color Coding If a color code is selected it can consist of the codes for
147. f the operator carrying out the measurement 228 User Manual 780000102 09 Chapter 13 File management File configuration menu Comment In contrast to the other data in this menu the comment is specific to a fiber and not to the whole cable This line is thus used to enter a new comment and not to display it The comment appears at the top of the screen with the other parameters of the fiber see figure Example of signature of an OTDR file in the File Menu on page 221 File expedition This sub menu appears when the option lt mail gt has been configured with one media for example Ethernet in the system setup menu see the base manual of the Base Unit reference 8000M02 for example To send a mail you must have filled the 2 following fields lt Mail to gt Use the arrow key to enter in the edition window and enter the name of the recipient lt Subject gt Using the same key enter the subject of the mail or a comment if necessary Buttons on the Saving traces right of the screen Fig 86 Save These buttons are used to save one or more traces To copy the configuration on to all the tabs lt Copy Setup for all gt Copy Setup For all Fig 87 Copy Setup For All User Manual 780000102 09 229 Chapter 13 File management Explorer Function The button Copy Setup For all applies the configuration modifications made in the File menu displayed into the File menus of the other appli cations managed by
148. form only A CD RW drive on option 8000 platform only The Base Unit is equipped with 2 USB ports as standard One of these can be used to connect an external storage medium in particular a USB memory key User Manual 780000102 09 231 Chapter 13 File management Explorer Function A Standard Compact Flash card 8000 platform only A Remote Base Unit and data transfer Abbreviations for storage media 232 NOTE It is possible to disconnect reconnect this medium while the instru ment is switched on Nevertheless it is recommended to remove the cursor from the lt USBFlash gt media in the explorer before removing the key This will ensure that no data is still currently being trans ferred Although two USB ports are present it is only possible to use one external USB storage medium per session When a file is moved in the explorer of the Base Unit the end of the move on the screen does not mean that writing of data into the mem ory is complete The transcription of some data may still be incom plete if the storage unit is removed prematurely NOTE A beep is emitted by the Base Unit to confirm the successful insertion and recognition of a USB memory key The Base Unit is equipped as standard with a slot in which a Compact Flash card can be inserted The Compact Flash card must be inserted before switching on the instrument It is strongly recommended that this medium should not be withdrawn or r
149. fter each measurement is done a new message follows if another measurement is configured in the sequence such as in step 3 5 The sequence is terminated when no more message is displayed and the led from the MTAU tab changes from g to Go back to step 1 with a new fiber The order of the sequence will take in consideration the order in which the sequence is displayed on screen starting with the ports order then with the functions order In our example the sequence will measure successively OTDR OSA then PMD Some messages may appear during the sequence to request specific actions necessary for the measurement just like check source appears before a PMD measurement The focus in on the active function and the link becomes green Even though this is not necessary it is possible to go to the measurement corresponding tab when a function is being used and see the results of the acquisition User Manual 780000102 09 213 Chapter 11 Multi Test Access Unit Auto mode launched the sequence is automatically updated and continues if the function was not currently used or is immediately stopped otherwise In this last case an error message is displayed indicating that the function has been deselected If a function is deselected in the SETUP page while the sequence is if you wish to stop a measurement but not the sequence go to the corre sponding measurement tab and click on START STOP 214 User Manual 780000102 09
150. function nor to the expert mode because the Bend function analyzes two traces at the same time Go back to the Table or Graph function to have access to these functions User Manual 780000102 09 59 Chapter 4 Reflectometry measurements Table of results To scroll through the table if it contains more than 8 lines either select the Cursors function and move the selected cursor along the trace using the keys 4 and p gt or select the Event function and move the cursor through the table using the keys A and wW E Ee 100 P alim 130W P used 50W n A 3446 44m 3 898 dB B 1159 44m 2 772 dB A B 2287 00m 1 126 dB eurs A m Cursor B tacraph MIE Ful Distance m Loss dB Refle T Loss dB Scale 1166 43 0 050 3 1492 57 0 006 P J Set Event Advanced e q R Fig 21 Example of table of results Information Each event is referenced under the trace by a serial number which is provided for repeated in the first column of the table The table then shows each event an icon symbolizing the type of the event detected Non reflecting attenuation e g splice Event with reflection e g connector Ghost reflection Slope of the fiber when no fault follows the slope LEZ 60 User Manual 780000102 09 Modifying types of events Chapter 4 Reflectometry measurements Table of results End of fiber ORL measurement Event marker when a measurement cannot be carried out If
151. g on Stop wait Signal acquisition This message indicates that an acquisition is in the process of being carried out To stop an acquisition whatever the mode is used press the START STOP button Then press either the button SETUP to go back to the Base Unit config uration menu or press the button START STOP to start a new identical acquisition 138 User Manual 780000102 09 Chapter 7 Polarization Mode Dispersion Measurement File Management Next measurement After each acquisition in the Statistic mode and when Long term has bee set on Period or Manual this message requests that you select Stop Wait The Base Unit then displays Signal Acquisition Push the Start Stop button to stop the cycle if necessary Ready to make cycle This message appears after a acquisition cycle is terminated when you are in statistic mode Press START STOP to start a new cycle Ready to make Measure The message is displayed after the completion of a Single mode acqui sition sample or a Reference measurement Either press the SETUP button to return to the Base Unit configuration menu or START STOP button to start the same acquisition sample This message is also displayed in continued mode if the button START STOP has been used to stop and restart a measurement Waiting bargraph When Statistic mode is used and Long term is set to Period a bargraph displays on the right of the results the remaining time before the next acquisition
152. g to zero dispersion ambda0 this must lie between 1300 nm and 1324 nm slope SO corresponding to Jambda0 0 093 ps nm2 km max two limit values of the coefficient of dispersion at wavelengths situ ated between 1260 nm and 1360 nm Chromatic dispersion is not dependent on the time and constraints of installation and it is relatively insensitive to variations in temperature 0 0025 ps nm km C for the coefficient of dispersion 0 0025 ps nm2 km C for the slope The only external parameter that can affect it is the type of modulation of the signal itself most type DFB lasers have no external modulation to limit this effect Chromatic dispersion analyzers give the delay value of the optical link unit as a function of wavelength On the basis of this delay they calculate the coefficient of dispersion the dispersion slope and specific values such as the wavelength corresponding to zero dispersion and the asso ciated slope The principle of measurement of chromatic dispersion is described in document IEC 60793 1 42 as well as in ITU T recommendations G 650 and G 652 The calibration of the instrument is defined in document IEC 61744 User Manual 780000102 09 11 Chapter 1 Principles of measurement The principle of measurement of Chromatic Dispersion CD Method of CD measurement used by the Base Unit 12 Telcordia has also published GR 761 CORE requirements for chromatic dispersion analyzers
153. ge xxiii Conventions on page xxiii User Manual 780000102 09 xxi About this guide Purpose and scope Purpose and scope The purpose of this guide is to help you successfully use the MTS T BERD features and capabilities This guide includes task based instruc tions that describe how to install configure use and troubleshoot the MTS T BERD Additionally this guide provides a complete description of JDSU s warranty services and repair information including terms and conditions of the licensing agreement Assumptions This guide is intended for novice intermediate and experienced users who want to use the MTS T BERD effectively and efficiently We are assuming that you are familiar with basic telecommunication concepts and terminology Technical assistance If you need assistance or have questions related to the use of this product call or e mail JDSU s Technical Assistance Center for customer support Table 1 Technical assistance centers Region Phone Number Americas 866 228 3762 tac jdsu com Telecom Products World Wide 301 353 1550 Europe Africa and 49 0 7121 86 1345 hotline europe jdsu com Mid East Europe 33 0 1 30 81 50 60 support france jdsu com JDSU France Asia and the Pacific 852 2892 0990 Southeast Asia Aus Hong Kong tralia and New 86 10 6833 7477 Beijing China All others 866 228 3762 tac jdsu com Zealand xxii User Manual 780000102 09 About thi
154. gth 211 Chapter 16 Technical specifications PMD plug ins Dimensions in mm without front panel PMD plug ins Typical values measured at 25 C unless specified otherwise Plug in 81PMD 81WDMPMD Measurement time 6 seconds independent of the PMD value Dynamic range DGD Measurement range Up to 45 dB 0 080 ps to 60 ps Uncertainty 0 020 ps 2 PMD Repeatability 0 025 ps 1 within 1485 1640 nm without averaging 2 up to 150 ps for weak coupling 3 weak coupling for 0 1 ps to 60 ps DGD range up to 35 dB budget loss traceable to NPL standard 4 weak coupling for 0 1 ps to 60 ps DGD range up to 35 dB budget loss traceable to NPL standard User Manual 780000102 09 261 Chapter 16 Technical specifications CD modules CD modules Typical specifications of CD module Typical values measured at 25 C unless otherwise specified CD specifications Module 5083 CD Measurement time from 30 s Manual Auto throughout the wavelength range Dynamic up to 120 km Minimum distance 10 km Wavelength 1255 to 1650 nm Absolute accuracy of wavelength 0 1 nm Repeatability of dispersion coeffi 0 2 ps nm km cient Dispersion range 0 1 ps at 100 ps nm km Repeatability of dispersion slope 1 1 with automatic measurement and termination connector 3 point mea surement 2 on anon saturate
155. hapter describes the graphical user interface of the Base Unit used with the optical measurement plug ins OTDR WDM etc The topics discussed in this chapter are as follows Display screen on page 30 Using an external keyboard mouse and screen touch options on page 33 Functions relating to display of a trace on page 35 Overlay trace function on page 39 Saving when the instrument is shut down on page 42 User Manual 780000102 09 29 Chapter 3 Graphical User Interface Display screen Display screen The display screen is divided into a number of different zones Starting from the top these are astatus bar in which various icons indicate the current functions abar displaying a scaled down representation of the trace showing the zoom zone and the parameters of the measurement on display signature of the measurement the main part of the screen displaying a menu or the page of results tabs enabling the user to switch from one function to another OTDR WDM power meter etc as required At the right hand side of the screen softkeys give access to the various commands Their action depends on the current function and configura tion aia 19 01 2004 16 45 1550 nm 5029VHD 300ns 6 201s 10 gTrace Event ABC fib2 AS2657m O476dB B 227355m 0 083 dB 0 Cursor A VY Cursor B Length m T Loss dB F
156. he Macro function Calling the Macro function This function is accessible via the button SCRIPT in the front of the Base Unit 10 various macros may be created and used Once you click on the button SCRIPT you see the list of all the 10 macro positions Each number from 1 to 10 displays the name of the macro stored at that position or displays Empty in case that particular spot is free Default Macro Macro 2 1 Macro 33 Macro 22 Macro 43 Macro 1 Empty Empty Empty Empty Empty Empty eee wovsawn _ Fig 91 List of Macros Macro recording The Base Unit offers two different types of macro Standard and File For both types it is required to Select and activate all necessary modules before starting the macro recording Never press the SYSTEM key during macro recording 240 User Manual 780000102 09 Chapter 14 Macros Macro recording Standard macro This macro type shall be used to automate functions or operation mode To create a new standard macro 1 6 gue NOTE meee NOTE All events are recorded wether you use the Base Unit buttons the soft keys the touchscreen a mouse or an external keyboard The speed of your actions is not really relevant See Macro playback page 244 Select a free position A sub menu automatically appears Change the Macro type if necessary to set it on Standard Click on the soft key Learn You a
157. he gain slope measured by a method using a least squares algo rithm To display these results above the channels Confirm Delta Gain amp Slope in the SETUP menu Place the cursors at the desired position Press the Advanced key then Delta Slope A lt gt B The gain tilt is displayed in dB Gain slope is traced and its value is displayed in dB THz or dB nm according to the units selected User Manual 780000102 09 109 Chapter 6 Optical Spectrum Measurement Table of results TE ee rr enm asa OED ia A i walters hal SRS Ea p ET 2 zde EN Fig 33 Display of total power gain tilt and slope of the gain between the cursors Table of results 110 Lines According to the choice made in the SETUP menu the table of results may include either a line for each channel detected if Channel Selection Permanent ora line for each graduation if Channel Selection Grid and a grid is selected Type of display The table may be displayed in a single line on half of the screen or the whole screen as a function of the lt Graph gt lt Table gt key see lt Graph gt lt Table gt key page 107 User Manual 780000102 09 Chapter 6 Optical Spectrum Measurement Table of results Contents of the table without statistics In the absence of statistics see Measurement parameters page 100 the parameters given for each channel are 1 the number of the channel 2 the frequency or the
158. he text of the note and confirm its creation Press the Exit key to return to the previous menu if necessary User Manual 780000102 09 Chapter 6 Optical Spectrum Measurement Channel filtering Displaying relative results By default the table gives the results in absolute values To obtain these results in relative values with respect to a reference channel Press the Table Contents key then Relative gt lt Absolute to select Relative Move the cursor on to the channel that is to serve as the reference Press the Define Ref Channel key The results are recalculated with respect to this channel of reference meee NOTE On quitting this menu the table automatically reverts to the display of absolute values Channel filtering Field of This option applies solely to instruments OSA 16 OSA 20 OSA 30 and application OSA 303 It is used to filter out one particular channel and extract it via a port called the drop port Modules OSA161 and OSA301 are equipped with an input port A anda drop port Module 830SA201 is equipped with two input ports A and B and a drop port Only input port A on modules OSA161 and OSA301 can extract a channel to the drop port Only input port B on module OSA201 can extract a channel to the drop port Configuration To obtain filtering of a given canal to the drop port go into the SETUP menu of the OSA module Choose Acquisition then Sweeps and select Filtering
159. he trace acquired or recalled from a memory is displayed on the Results page see example on Figure 13 on page 30 Various functions common to many plug ins OTDR OSA etc can be used to modify the display of the trace Cursors Zoom Shift Event Trace Trace Table Full scale etc The role of the direction keys and the confirmation key will depend on the function chosen User Manual 780000102 09 35 Chapter 3 Graphical User Interface Functions relating to display of a trace 36 Display of the results on the trace Cursors Positioning the cursor Each event OTDR measurement or channel WDM measurement detected is represented under the trace by a serial number The results of the measurements can be written on the trace Depending on the options chosen in the SETUP menu on Result Screen gt Results On Trace it is possible to show on the trace for an OTDR measurement No results or All the results value and position or only the markers showing the position of the events measured When there is saturation for a reflective event OTDR measurement the maximum value measured is displayed with the sign gt This shows that the actual reflectance is greater than the value shown for example if R gt 29 5 dB is displayed the reflectance could be 18 dB The reflectance of a ghost event OTDR measurement is displayed in brackets on the trace The vertical cursors A and B are used in the Zoom and
160. ible to affect the same function to different ports gue NOTE Functions that are offered by the same physical module may only be connected to the same port When the sequence is completely configured you can view which func tion is connected to which port thanks to all the solid links see the figure Auto mode for the MTAU plug in on page 211Fig 77Fig 77Fig 77 Various link colors are offered to differentiate each port blue for port A red for port B pink for port C 212 User Manual 780000102 09 Chapter 11 Multi Test Access Unit Auto mode IMPORTANT A N If a function used in the sequence configuration is deselected in the SYSTEM page the configuration automatically deletes the corre sponding link but keeps the rest of the configuration in memory Rese lecting the function does not automatically recreate the link mw NOTE The last configuration is saved in the 8000 Base Unit and may be retrieved after a complete reboot unless the hardware configuration has changed for example if a new module is inserted Performing the 1 Connect the fiber to test to the MTAU common port sequence Of 2 Click on START STOP to start the sequence tests 3 A message is displayed requesting to confirm you wish to start the measurement such as Start SM OTDR measurement Answering No cancels all the sequence but keeps the configuration in memory Answering Yes starts the first measurement 4 A
161. ig 13 Example of display of results with OTDR plug in Top status bar The top status bar on the screen shows on the right current date and time and in the form of icons 30 User Manual 780000102 09 Mini trace Signature of the measurement Main display zone Tabs Chapter 3 Graphical User Interface Display screen the type of power supply mains or battery and if the power supply is on battery the level of charge see Battery management in chapter 2 from the Base Unit base manual if saving is in progress the icon if the Talkset option is present and the telephone is activated the icon if a remote screen is selected the icon RC if transfer of data is in progress the icon s Q_ The File menu and the Results page can include a scaled down repre sentation of the trace which may show the location of the zoom zone corresponding to the main display The part of the trace shown in the main display is boxed on the mini trace This mini trace will only appear if the trace originated from an Base Unit Other Bellcore files read on this instrument do not contain the information needed to display it A status bar repeats the parameters of the measurement and in some cases the position of the cursors acomment the name of the file when the result is recalled from a memory The central zone of the screen can display the configuration of the instru ment or the measurement the m
162. ighted Remove the dust cap from the Signal Input optical socket situated on the rear panel of the Base Unit to connect the fiber link you have connected to the OBS 15 via the two jumpers and coupler as shown in the below diagram User Manual 780000102 09 129 Chapter 7 Polarization Mode Dispersion Measurement Performing a PMD measurement with a 5073XXX plug in or OSA 16X OSA 20X OSA 30X series gage Fiber under test Coupler a A Jumpers ro e oi me example Signal input socket situated on the PMD module Fig 37 Reference measurement 2 Select the PMD function in the Instrument Setup menu To do this press the SETUP button then select the PMD function and press Fig 38 Selection of the PMD function 8000 series example 3 Press the button RESULTS to display the auto calibration status A bargraph informs of the progression state of the calibration at the bottom of the screen Wait for the calibration to be fully completed before continuing 130 User Manual 780000102 09 Chapter 7 Polarization Mode Dispersion Measurement Performing a PMD measurement with a 5073XXX plug in or OSA 16X OSA 20X OSA 30X series 4 Press the button SETUP to access to the Base Unit configuration menu for PMD Use the keys A and W to move the cursor to the different parameters and the keys lt and to modify a value 5 Check that the option Make
163. igured and it can be specified whether or not it is possible to enter a note for each channel see Table notes page 112 Units Here the units of the x axis can be selected Frequency in THz Wavelength in nm 4 Wavelength drift Selection of the alarm on the basis of the value of delta F 1 The values are then defined in Min P 2 The values are then defined in Max P 3 The values are then defined in Min SNR 4 Delta of frequency 5 Minimum power 6 Maximum power User Manual 780000102 09 105 Chapter 6 Optical Spectrum Measurement Acquisition Acquisition The Base Unit has two modes of acquisition with 507XXX series and 81WDMXxXxX series plug ins 1 Fast acquisition press the START key and hold it down for some time 2 Normal acquisition press the START key briefly Only Normal acquisition mode operates with modules OSA 16X OSA 20X OSA 30X When acquisition is complete an automatic measurement is performed Trace display functions Display of the 106 WDM OSA results _ The trace acquired or recalled from a memory is displayed on the Results page see example Figure 13 on page 30 A range of functions enable modifications to the display of the trace Cursors Zoom Shift Event Trace Graph Table Full scale etc See Functions relating to display of a trace page 35 See Overlaying several traces stored in memory page 40 for overlay of traces The results window obtained
164. ility as some extra equipment might be needed ex broadband source for PMD Select Auto on the key Manual Auto to switch to auto mode or vice et versa Links showing that OTDR will be performed nal on port A OSA and Ce PMD on port C Icons representing a ss K available functions Fig 77 Auto mode for the MTAU plug in Different icons appear at the top of the screen showing different avail able functions According to your 8000 Base Unit configuration you may have all the following functions available OTDR CD OSA User Manual 780000102 09 211 Chapter 11 Multi Test Access Unit Auto mode PMD Configuration 1 Make sure you select all necessary functions in the SETUP menu of the sequence of tests mw NOTE Icons for selected functions appear in yellow icons for available but unselected functions appear in grey 2 Goto each tab if necessary to make sure all setup values are correct for each selected function 3 Select the Function Cursor key and choose which function you wish to configure in the list of icons 4 Select the Port Cursor key and choose which port is connected to the corresponding function 5 Click on the key to validate the association A solid link will be drawn between the function and the port you selected see the figure Auto mode for the MTAU plug in on page 211 6 Go back to step 3 for the next function if necessary eu NOTE It is not poss
165. into the SETUP or RESULTS menu the same page is displayed for this plug in to access the screen from which the the input channels can be switched The screen displays a diagram of the input and outputs to the switching device User Manual 780000102 09 209 Chapter 11 Multi Test Access Unit Manual mode Switching button Mirror Fig 76 Manual mode for the MTAU plug in Manual mode To switch each output use the button Port A Port B Port C Mirror Each click on this button switches the next output port The active port and the link to the common port are shown green while the other ports remain grey On the front of the plug in a red LED next to the port selected also lights up in order to provide a permanent physical indication of which output is active mw NOTE To optimize manipulation always use the RESULTS key to change over from this screen to the screen corresponding to each measure ment 210 User Manual 780000102 09 Chapter 11 Multi Test Access Unit Auto mode Auto mode The auto mode offers the best way to test a full cable The purpose is to set a sequence of operations which will be performed for each fiber one after the other with no need to modify the configuration or to go to each measurement tab All operations can be handled from the MTAU tab NOTE The switch between measurement if necessary is automatic Never theless launching each measurement remains the user responsib
166. ion of the channel on each acquisition In this mode the channels are always detected without making a reference measurement w NOTE At the end of an acquisition in permanent mode it is possible to cre ate a grid on the basis of the channels detected To do this press the key Create Grid in the SETUP menu Signal threshold 1 Threshold of detection of channels see Channel detection threshold page 108 Auto the threshold is determined automatically 1 Attention all modification of these parameters has immediate repercussions on the trace and entails the loss of the measurement statistics 100 User Manual 780000102 09 Chapter 6 Optical Spectrum Measurement WDM OSA test configuration Manual from 79 9 to 10 dBm Use direction keys or Edit Number to modify values Min 80 dBm Max 10 0 dBm NOTE Modification of the parameters Channel selection and Signal threshold will only modify the results if the WDM module present is the one that was used for the acquisition SNR parameters To modify these parameters go to the OSNR line A sub menu then appears proposing the following options SNR method Side of the peak where the point of reference for noise is taken left right left and right S lt gt Ndistance1 Distance between the peak of the channel and the point of reference for the noise Auto distance determined according to the spacing of the channels 0 2 0 4 0 8 nm from
167. is complete the Results screen appears the first trace selected is the active trace the other traces being overlaid The traces are shown in different colors the active trace is green Their serial numbers are repeated at the top of the screen The OTDR markers are referenced on the active trace by the symbol l and on the other traces by vertical dashes 40 User Manual 780000102 09 Chapter 3 Graphical User Interface Overlay trace function Adding traces With one or more traces already displayed to add further traces to the in overlay display the number of traces displayed cannot exceed 8 Press the FILE button and in the Explorer menu select the files of the traces to be added see Multiple selection of files page 236 Press the Load key Press the Add Traces key as the traces are loaded they cease to be highlighted in the list of files When loading is complete the new traces are displayed in overlay with those that were already there meee NOTE If the number of files selected exceeds the display capacity a mes sage gives warning that loading will be incomplete only the trace or traces selected first will be displayed up to the permitted limit of 8 traces Overlaying the To copy the current trace into the overlay memory proceed as follows current trace On the RESULTS page press the Advanced key then Overlay then Set Overlay The current trace is copied into the overlay memory r
168. is possible that the display threshold of the attenuation measurement result is higher than the attenuation that you are trying to measure or else in the SETUP menu you may have selected Results on Trace None or Graphics only mw NOTE If you try to measure a splice on a slope the measurement is not car ried out and the following error message is displayed Slope found between two cursors User Manual 780000102 09 69 Chapter 4 Reflectometry measurements Manual measurements 70 Manual tis possible to carry out an ORL measurement on a part of the fiber measurement of ORL Follow the following procedure to measure a part of the fiber 1 Position the cursors A and B to delimit the section that yo measure u wish to 2 Press the Advanced key then Manual Measurement then select ORL 3 Press The ORL will be measured for the section of trace defined 1550 nm 5023VHD 300m em 20 13 10R 1 34500 ABCfib31550n gTrace eee ABC fib3 BVBIGr 5 end Event L 4 517 99m 0 472 dB B 1782 96m 0 236 dB 126497m 0 237 dB BL A i B gZoom whit 20 el T Cursor A o SBE sl DEA Ea 7 Cursor B f Zo 10 q 2200 38m 0 07848 ORL 40 67 Total Cri B Reflect JB Slope dB km Leni LACES 22 0 520 g2 Pt Loss 5 Pt Loss Exit an Fig 24 Result of ORL measurement ORL on a if saturation occurs during an ORL measurement the result is given with saturated trace the sign
169. istant Module Fig 70 Distant module Identification Data from the distant instrument is displayed The serial number and the operator name on this instrument Check this data before making a measurement or taking a reference Displaying The measurement results are displayed as the sequence progresses on results for a both Base Units FOX automatic During the measurement the following icon is displayed and the keys on measurement the right of the screen are inactive Once the measurement has finished the icon turns grey keys are active the Base Unit beeps to signal the end of the measurement 200 User Manual 780000102 09 Sending a message Chapter 10 OFI Module FOX Function ea he Ed mnis coun o Fig 71 Result of a FOX automatic measurement The data displayed in the table can vary according to the acquisiton parameters see Configuration of the FOX automatic measurement page 191 When two Base Units are connected at each end of the fiber via their FOX port they can send messages to each other Two types of messages are available predefined messages 10 User definable messages 4 The message sent by one Base Unit will be displayed on the screen of the other Base Unit To send a message to the distant Base Unit In the Results page push the Send Message key User Manual 780000102 09 201 Chapter 10 OFI Module FOX Function Setect me
170. l Spectrum Measurement Configuration of the instrument Configuration of the instrument After connecting the fiber to be tested to the optical connector you must select the OSA module see the Base Unit manual WDM OSA test configuration To configure the Base Unit in preparation for an OSA test on a fiber press the SETUP button The various measurement parameters are proposed 1 either choose the default values by pressing the lt Test Auto gt key Configuration of acquisition in Test Auto mode Sweep Single High Sensitivity Auto Averaging acquisition No Resolution Full Long term No Configuration of measurements in Test Auto mode Channel detection Permanent Signal threshold Auto SNR SNR method Left and Right S lt gt N distance Auto Noise acquisition bandwidth 0 100 nm Splitter compensation Value No Unit dB Tilt amp Slope Gain No Configuration of the result screen in Test Auto mode Grid Default value last value used Alarms No Wavelength range Auto Table Notes No Unit nm 96 User Manual 780000102 09 Chapter 6 Optical Spectrum Measurement WDM OSA test configuration Configuration of the file set up see File management page 219 File name Cable_id Fiber_Num Test_Point Direction Auto Store Yes Auto Fiber Increment Yes 2 or define your own configuration The parameter to be modified must be selected by means
171. lable 246 User Manual 780000102 09 Printer This chapter describes the function the configuration and use of the Printer module i This module is only applicable to the 8000 series platform The topics discussed in this chapter are as follows Function of the printer module on page 248 Loading a new paper roll on page 249 Setting up the printer on page 250 Printing a page on page 250 User Manual 780000102 09 247 Chapter 15 Printer Function of the printer module Function of the printer module The printer module 82PRINTER brings an internal printer to the 8000 Base Unit The printer itself may be completely integrated in the 8000 Base Unit module or may be fully exposed Exposing the in order to load a new paper roll see Loading a new paper roll page printer 249 or to see clearly the printer normally hidden within the printer module you may expose the internal printer Locking screws Lever to release S module Fig 93 Exposing the printer out of the module To expose the printer out of the module 1 Unscrew the locking screws on each side of the module 2 Pull on these screws to lift the printer up until you reach the maximum exposed position and hear the click of the lever mw NOTE You may use the printer in the same manner whether it is fully inte grated in its module or exposed as shown in the figure 248 User Manual 780000102 09 Chapter 15 Printer
172. lay menu 0 eee eee 42 Saving when the instrument is shut down 42 Chapter 4 Reflectometry measurements 43 Selecting the function 000ee eee 44 Configuring the reflectometry test 44 Acquisition parameters 000200 eee eeee 45 Measurement parameters 20000ee eee eee 47 Result Screen citei ais Seiten wea de dixie ae wees 49 Acquisition 0 00 cece eee 51 Realtime mode 200 2c eee E 52 Automatic acquisition mode 2 2000 53 Manual acquisition mode 20002eeee 55 Multi wavelength acquisition 0 eee eee 56 User Manual 780000102 09 ix Table of Contents Trace display functions 22000000 56 Displaying results on the trace 0 0005 57 EV NtS so sce oetssi ee Saeed eee ee e etree esd 57 Trace Event functions 20000 eee eee eee 57 Criteria for display of an event 00 eee ee 58 Table of results 0 002 eee 59 Information provided for each event detected 60 Modifying types of events 00 00 eee ee eee 61 Table notes iets ncac2c etek Gace aecevaae Rok Re bee Rae Sede 62 Automatic measurement and detection 64 Addition of markers 2 0000 cess eee eee 65 Representation of the markers 200 0005 65 Hints on the positioning of markers 66 Deleting markers 0
173. lay the Results page then 1 Place cursor A exactly on the fault then place cursor B after the splice that you wish to define 2 Press the Advanced key then Manual Measurement then select the function 2 Pt Loss User Manual 780000102 09 Chapter 4 Reflectometry measurements Manual measurements 3 Press amp The splice marker is placed at the point defined by the first left hand cursor and the result is displayed on the screen If the fault is reflective the reflectance value is also measured and displayed These results are added to the table of results If no result is displayed it is possible that the threshold of attenuation detection is higher than the attenuation that you are trying measure or else you may have selected No or Graphics only on the Results on Trace line gee NOTE If you try to measure a splice on a slope the measurement is not car ried out and the following error message is displayed Slope found between two cursors Five points method To carry out a splice measurement by the five points method 1 Measure the slope preceding the fault to be measured then the slope following it Place the cursor on the fault between the two sections 3 Press the Advanced key then Manual Measurement then select 5 Pt Loss 4 Press The splice event marker is placed on the cursor and the result is displayed on the trace and in the table of results gee NOTE If no result is displayed it
174. le Management 156 User Manual 780000102 09 Measurement of chromatic dispersion The 5083CD module the 50otdrExt extension makes available three functions CD analyzer reflectometer laser source The OTDR function is described in Reflectometry measurements on page 43 The source function is described in the chapter Source function on page 179 The chromatic dispersion analyzer function is described in all the rest of this chapter The topics discussed in this chapter are as follows Configuring the instrument on page 158 Configuring the CD test on page 158 Making a chromatic dispersion measurement on page 163 File Management on page 176 CD standards and limits on page 176 Source function on page 179 User Manual 780000102 09 157 Chapter 9 Measurement of chromatic dispersion Configuring the instrument Configuring the instrument After connecting the fiber under test to the optical connector of the 5083CD module of the Base Unit you must select the CD function To do this press the SYSTEM button If the instrument is equipped with more than one plug in or if the sole plug in provides more than one function use the direction keys and gt to select the function the icon under the cursor is framed in green select the function by pressing amp the icon turns orange yellow Configuring the CD test 158 To configure a chrom
175. le of the optical power and attenuation measurements 182 Power measurement 22002000 ee eee 182 Attenuation measurements optical link loss 183 Connections to the power meter and the source 184 Configuring the LTS 0 0 eee eee 184 Configuring the measurement parameters of the power M t so She Pee Ee eR E 185 Configuring the alarm parameters of the power meter 186 Configuring and displaying the parameters of the source 187 User Manual 780000102 09 xiv Table of Contents Display of results and command 4 188 Result of the measurement in progress 188 Table of results ss s ti naii e eee eee eee 188 Commands of the power meter parameters 189 Making a measurement 00 eee eee ees 189 Power measurement 0000 e eee eee 190 Optical link loss 6 0 0 ce eee 190 FOX FUNCHION ers c28 nee Soe eee eee ae et 191 Configuration of the FOX automatic measurement 191 Acquisition parameters 2 20000 192 Results screen parameters 22 055 192 File Storage parameters 0 0 0 e eee eee 193 Establishing a reference 0 00 e eee eee eee 193 Establishing a reference for loss measurement 194 Taking a side by side reference 194 Taking the reference in aloop back mode 195 Establishing a reference for an ORL measurement 196 ORL Emitted power
176. lighted If yes then recharge the battery Defective connections Check that the cables are properly connected and the notches on the connectors are correctly aligned Performing the When the reference measurement of the broadband source has been measurement completed the polarizer replaces the coupler Use the following procedure to make a measurement 1 2 Remove the two protection caps on the OVP 15 Disconnect the coupler and connect the cables to the OVP 15 Either connector on the OVP 15 can be used Set the OVP 15 polarization angle to 0 any polarization angle would be acceptable however it is preferable not to change it Press the SETUP button to access the Base Unit configuration menus Select the appropriate PMD test setup according to your application as earlier defined in this chapter Press the START STOP button to see the results within a few seconds 132 User Manual 780000102 09 Chapter 7 Polarization Mode Dispersion Measurement Performing a PMD measurement with a 81XXX plug in 7 Repeat the PMD measurement for every fiber to be tested it will have to be connected to the OBS 15 A Fiber under test Jumper lt Jumper P OBS 1 at Signal input socket on the PMD plug in Fig 40 PMD measurement with an external polarizer Performing a PMD measurement with a
177. lin ta Ydosa ONY PEJ J Fig 51 Example of a spectrum view after a measurement The second graph the attenuation profile shows the difference between the final spectrum and the reference spectrum of the broadband source see figure Example of a AP result Showing profile on page 152 You may switch from the Profile view to the final Spectrum view using the button Spectrum Profile mu NOTE The Trace Table and Wavelength functions are available exclu sively with the Profile mode Zoom In order to zoom in on the trace press the Zoom Shift menu key to display Zoom then use the direction arrow keys to zoom in either hori zontally or vertically The zoom of the display is made around the selected cursor s mw NOTE To reset the zoom and see the full trace press Full scale User Manual 780000102 09 153 Chapter 8 Attenuation profile File Management Trace shifting To shift the trace horizontally or vertically press the Zoom Shift menu key to display Shift then use the direction arrow keys to make the required shift Cursor To move the cursor s on the trace press the Cursor menu key then use the direction arrow keys and W or q and The coordinates of each cursor intersection with the trace are indicated underneath the trace Wavelength To move the cursor from one wavelength to the next one press the Wavelength menu key and use the arrow keys A and W or 4 and p The cu
178. lt This means that the actual ORL value is less than the value isplayed User Manual 780000102 09 Chapter 4 Reflectometry measurements Memorization of the position of events Memorization of the position of events To memorize the position of events with a view to repeating the measure ments at the same place during a future acquisition or on another trace press the Advanced key then select Lock Evts The event memoriza tion icon SP will appear in the title bar The positions memorized will then be used in the subsequent measure ments either at the end of the manual acquisition or when a stored trace is recalled mw NOTE This function memorizes the markers placed on the current trace The following procedure is recommended to start a measurement with markers 1 Carry out an automatic measurement Memorize the position of the events with the Add Marker key Add the manual measurements required keys Advanced gt Manual Measurement CAUTION If a marker is added with the Add Marker key after manual measure ments have been performed then all the markers on the trace will be converted into AUTO markers and an automatic measurement will be performed using these markers The previous manual measurements will be lost Provided the event memorization icon Faq is displayed the automatic measurement following the acquisition Is carried out using the markers which were present before the acquisition If you
179. lues of the various acquisition parameters In real time mode only measurements relating to the cursors are possible but as soon as acquisition stops automatic measurement is possible Automatic The fastest way of detecting faults in your optical fiber is to use automatic acquisition acquisition mode The Base Unit then uses the acquisition parameters pulse width range and resolution and acquisition time best suited to the d moade fiber to be tested mw NOTE In Auto mode since all the parameters have been reconfigured over lay and marker locking are not possible during acquisition Automatic configuration of acquisition Press the SETUP button then User Manual 780000102 09 53 Chapter 4 Reflectometry measurements Acquisition 54 2 either choose the configuration manually on the Laser line select the wavelength of the laser if the Base Unit uses a dual wavelength plug in on the Mode line select Auto or select Test Auto or Factory Defaults Acquisition phases in automatic mode When the START STOP key is pressed an automatic configuration procedure selects the optimum parameters after which acquisition is carried out in three phases Phase 1 Choice of the best range to display the whole of the fiber under test Phase 2 Choice of the ideal pulse width and of the acquisition time to qualify the fiber accurately for example the one that gives the best resolution for a given dynamic Phase 3
180. manual measurements 66 measurement of slope 67 measurement of splice and re flectance 68 measurement parameters 47 multi wavelength acquisition 56 principle of measurement 2 Real time acquisition 52 results screen parameters 49 table of results 59 contents 60 notes 62 uncertainty 63 OTDR Bi dir acquisition parameters 80 adding markers 89 cable test 91 file management 90 measurement parameters 81 OEO results 89 OEO traces 88 Origin and end traces 88 performing measurement 82 troubleshooting 91 Overlay traces adding 41 display 40 removing 42 Overlaying traces WDM 113 277 Index PMD abacus 141 acquisition parameters 126 configuration 124 Display of results 135 fiber parameters 128 graphic display 137 information messages 138 local operator 129 Measurement procedure 132 method used 8 principle of measurement 7 reference measurement 129 remote operator 129 results screen parameters 128 Spectrum FFT 135 standards and limits 140 statistics 137 PMD coefficient 9 Printer exposing 248 loading paper 249 module function 248 printing page 250 setting 250 R Ref power power meter 190 Reflectance definition 3 result in OTDR table 61 specif measurement 253 S Shift 38 Attenuation Profile 154 CD 168 170 CD trace 168 170 PMD 137 Signal threshold WDM 100 User Manual 780000102 09 T Table Notes OTDR 49 Technical specifications 251 Threshold OTDR fiber end
181. mple excluding errors of calibration of refractive index of the fiber Dual cursor Resolution of display 0 001 dB Resolution of cursor 0 01 dB Accuracy 0 05 dB dB 0 05 dB Resolution of display 0 01 dB Accuracy 4 dB Automatic measurement of all the elements of the signal Slope measurement by least squares or 2 points of measurement Display threshold of faults 0to 5 99 dB in steps of 0 01 dB for event thresholds 11 to 99 dB in steps of 1 dB for the reflectance 0 to 1 99 dB km in steps of 0 001 dB km for slope User Manual 780000102 09 253 Chapter 16 Technical specifications Reflectometer plug in available Display of slope and attenuation for a segment of fiber Display of the position of a fault and of attenuation Display of the reflectance of the fault Display of ORL Manual Measurement of slope between the cursors Measurement Measurement of attenuation between two segments of fiber Measurement of reflectance of a reflecting element Measurement of ORL between the two cursors Measurement of splice by 2 or 5 points method 254 User Manual 780000102 09 Typical specifications of OTDR plug ins Chapter 16 Technical specifications Reflectometer plug in available Multi mode modules Typical values measured at 25 C unless otherwise indicated Plug ins Multimode 5023MM 5021MM
182. mplified Both traces are further compared providing the resulting power gain and noise figure To configure the Base Unit in preparation for an EDFA test press the SETUP button In the Measurements section set Type on EDFA User Manual 780000102 09 EDFA measurements Chapter 6 Optical Spectrum Measurement EDFA results analysis Other SETUP parameters are the same for EDFA as for WDM measure ments Refer to WDM OSA test configuration page 96 for a complete description NOTE If your Base Unit is equipped with an OSA201 you may use the two ports to test before and after the EDFA In this case make sure you select Port A B for Input Port Measurement procedure using one port If only one port is selected the Base Unit is ready to perform the Acq in signal before being amplified by EDFA Connect your Base Unit to your fiber before the EDFA Click START STOP to perform the first acquisition Switch to Acq Out Connect your Base Unit to your fiber after the EDFA Click START STOP to perform the second acquisition Results appear automatically in the table User Manual 780000102 09 115 Chapter 6 Optical Spectrum Measurement EDFA results analysis Select which trace Select which acquisition to view you are working on Fig 34 EDFA measurements Measurement procedure using two ports If two ports are selected the Base Unit will perform both Acq In and Acq Out in one step
183. mpted for a password when the module will be re selected Also after powering down the unit you will also be prompted for the password Remote interlock connector The BBS module has been equipped with a remote interlock connector SMB type on its front pannel This is to protect the user from injury when using class IIIb light sources The use of a Remote Interlock system is specified with class IIIb sources by 21 CFR 1040 10 USA If the short circuit at the SMB connector is opened the broadband light source is switched off immediately and cannot be switched on until it is closed again meee NOTE Note that the BBS modules are of class 1M under the IEC 60825 1 2001 international standard Remote interlock connector Fig 79 Remote interlock connector User Manual 780000102 09 217 Chapter 12 Broadband source BBS Remote interlock connector 218 User Manual 780000102 09 File management The topics discussed in this chapter are as follows File configuration menu on page 220 Explorer Function on page 230 CD Rom burning on page 238 User Manual 780000102 09 219 Chapter 13 File management File configuration menu File configuration menu Managing tabs 220 This menu is used to configure various parameters common to the whole of a cable Press the FILE button The following File menu appears pad 3001 1970 os Rn ze hirs Oir harddiskiessel
184. n Previous choice or Next Choice to display the previous and next versions available 13 Click on Confirm to start the upgrade of the selected software s 1 N may be replaced by another letter if necessary and 8000_Base_Upgrade corresponds to the directory where the updrade files have been unzipped User Manual 780000102 09 23 Chapter 2 Getting started Installing a new version of the software gue NOTE The software versions list does not always appear cf previous ver sions as well as the Previous Next Choice buttons and the Con firm Continue key In this case the upgrading starts automatically Upgrading begins The Base Unit is automatically rebooted Upgrading takes several minutes At the end the Base Unit is auto matically restarted if the boot version is superior to version 01 16 14 On the PC close the two windows opened to perform the installa tion 15 Once the upgrade is completed you may remove the virtual drive in our example N by using the command subst N d Installation from 1 Connect the Base Unit into mains with the AC plug and switch it on the sa 2 Connect the Base Unit to the PC by an Ethernet link ofa mw NOTE Use a cross over if the Base Unit is directly connected to the PC ora direct cable if the Base Unit is connected to the LAN Insert the CD ROM in the drive of the PC 4 Onthe PC use Windows Explorer to open the CD ROM Run TFTPD32 exe note the Server Interfaces
185. n is not selected the key is dark blue pressing the key once selects the function The key turns lighter in color to show the user that the direction keys are assigned to it Pressing more times will modify the choice made using the key Using an external keyboard mouse and screen touch options The external keyboard facilitates input of alphanumerical configuration parameters comments in the File menu notes in the table of results editing characters User Manual 780000102 09 33 Chapter 3 Graphical User Interface Using an external keyboard mouse and screen touch options Virtual control buttons bar A Equivalence between external keyboard and Base Unit 34 The mouse can be used instead of the direction keys to scroll through menus and make a selection Connect the keyboard and mouse to the USB connectors It is possible to emulate hard keys with Virtual Control buttons To display these buttons click once on the top of the screen in the status bar at the same height than the date and time System Fle Setup Rests Satse Sept Lote Fig 14 Virtual control buttons bar The virtual control buttons bar is displayed during a few seconds You may click on any of these buttons to obtain exactly the same results than using the real buttons in the front panel of the Base Unit The virtual control buttons bar can not be displayed within desktop applications see the User Manual of th
186. n the screen by markers Only the results exceeding the detection threshold defined in the SETUP menu are displayed mw NOTE Before starting an automatic measurement make sure that the func tion Lock Evts accessible by pressing Advanced is not activated the icon Ea must not be present in the left hand corner under the trace By means of this method of detection you can quickly locate all the faults in the fiber under test If an automatic measurement does not detect all the events additional manual measurements can be carried out To delete all the markers press the Advanced key then select Del Res When there have not been any measurements to carry out an automatic measurement press Advanced then select the function Auto Mes The following procedure is recommended 1 Fully automatic measurement the instrument locates the events and proceeds to the measurements User Manual 780000102 09 Chapter 4 Reflectometry measurements Addition of markers 2 Addition of markers see Addition of markers on page 65 in the cases of splices showing low attenuation and of close events The Base Unit then automatically measures the slope before and after the markers selected and measures the attenuation of the splice 3 Addition of manual measurements if necessary in the case of very close events The Base Unit performs the measurements requested by the user To start an automatic measurement while a measurement is
187. nding on which Base Unit is considered When the measurement is terminated the message lt Completed gt is displayed The trace is trans ferred to the other Base Unit Step 4 The slave Base Unit performs the acquisition using the same wave length The message lt In progress gt is displayed on each Base Unit either in the Local column or the Remote column according to which Base Unit is considered The message lt Completed gt is displayed when the measurement is terminated The trace is transferred to the master Base Unit User Manual 780000102 09 85 Chapter 5 Bi directional OTDR Performing a bi directional measurement Step 5 The bi directional measurement is completed meee NOTE The message lt Impossible measurement gt is displayed if the measure ment has not been able to detect the end of the fiber on any of the two traces The measurement must be performed once more with new acquisition parameters or by placing markers manually on the mea surement Step 6 Step 3 Step 4 and Step 5 are performed for each wavelength to test IMPORTANT It is possible to stop the measurement at any step of the process by pressing the button START STOP on the master Base Unit It is also possible to request from the slave Base Unit that the measure ment is stopped by pressing the button START STOP The master unit receives the request via a message on the screen lt Remote asks for stop do you agree gt If
188. nds the backscatter coefficient of the fiber used User Manual 780000102 09 3 Chapter 1 Principles of measurement Principle of bi directional measurement typical values of the backscatter coefficient for a pulse of 1 ns and for a single mode fiber 79 dB to 1310 nm 81 dB to 1550 nm and 1625 nm for a multi mode fiber 70 dB to 850 nm 75 dB to 1300 nm mee NOTE To measure the widest range of reflection coefficient it is necessary to insert a variable optical attenuator between the reflectometer and the link to be tested This attenuator enables the level of the trace to be adjusted so as to avoid saturation of the reflectometer by the reflection to be evaluated Principle of bi directional measurement If fibers with different mode field diameters core size etc are joined the resulting OTDR trace waveform can show a higher backscattering level This is due to the increased level of backscattered signal reflected back to the OTDR in the downstream fiber A Ka B Kb OTR cmm 2n n Fig 2 Normal splice Ka Kb Backscatter coefficient S splice value This phenomenon can occur when jointing different types of fiber in multi mode or 2 fibers with different backscattering coefficients A Ka B Kb B K Ke OTOR H ve omon C eens oo p Ka lt Kb Kb Ka AK S1 S AK Ka lt Kb Kb Ka AK S2 S AK Fig 3 4 User Manual 780000102 09 Chapter 1 Principles of measurement Principle of WDM
189. ng line Press to call up the edit menu Move around in the edit screen using the direction keys Select the desired characters and parameters Confirm each parameter or character selected by clicking on O oa A O N a Select Validate or Cancel to quit the edit screen according to whether the modifications are to be applied or not meorieG eal 222 User Manual 780000102 09 Chapter 13 File management File configuration menu Example of filenaming File parameters Filenaming rules selected Filename obtained Resolution 16 cm ABC Resolu ABC16_cmFiber_1 Fiber number 1 tion Fiber_ Fiber_Code certain length the names will be truncated in the display on the Base A file name can consist of up to 40 characters However beyond a A N Unit the end being replaced by Name of a file After an acquisition and as long as the result has not been saved the line below Filenaming gives the name made up in accordance with the filenaming rules If the file has been recalled from a memory the line below Filenaming shows its name irrespective of whether it respects the current filenaming rules This name can then be modified by calling up the edit menu using the button If a modification is then made to the filenaming rules the file name will not be modified To return to a name made up in accordance with the filenaming rules simply delete the existing name new name but it cannot rename the
190. nm 1550 10 nm 1550 nm 1625 1550 20nm 1550 20 nm 20 nm 20nm 10nm 1625 10nm 1625 15nm Dynamic 27 5 25 dB 31 29 dB 36 5 35 35 dB with broad dB pulse RMS SR 35 33 dB 37 35 dB 42 40 dB 40 dB 44 dB 45 5 50 45 43 5 SRe 34 32 dB 45 5 dB 42 5 dB Distance up to 260 km up to 380 km up to 380 km up to 380 km Pulse 10 ns 5 ns 10 ns to 20 us 10 ns to 20 us 10 ns to 20 us 3ns to 20 us width to 10 us to 10 ps Event at 10 ns at 5 ns at 10 ns at 10 ns at 10 ns at 3 ns Dead 3m 1m 4m 6m 45m 0 8 m Zone Attenua 25m 8m 15m 20m 15m 5m tion Dead Zone 1 Laser at 10 us and 25 C 2 Specified value corresponding to the one way difference in dB between the level of back diffu sion extrapolated at the beginning of the fiber and the level containing 98 of noise after 3 min utes of averaging 3 Typical value corresponding to the difference in dB between the level of back diffusion extrap olated at the beginning of the fiber and the RMS noise level after 3 minutes of averaging 4 at 20 us pulse width with Non Zero Dispersion Fibers in single wavelength configuration 5 EDZ measured at 1 5 dB below the peak of a non saturated reflecting event at minimum pulse width 6 ADZ measured at 0 5 dB on the basis of a linear regression from a reflectance of type FC PC 50 dB at minimum pulse width 256 User Manual 780000102 09 Classes of the lasers of the Chapter 16 Technical spe
191. nual 780000102 09 Chapter 5 Bi directional OTDR OEO Result table OEO Result table Bi directional measurement results use principles described in Principle of bi directional measurement page 4 The total loss of the fiber on the line specifying the total number of events is resulting from the average between the total loss calculated in the direction O gt E and the total loss calculated in the other direction Three tables are available in the OEO curve page each showing atten uation slope and reflectance In order to go from one table to another use the Advanced key followed by the Atten Slope R flect key and select on of the three possibilities Automatic measurement and Addition of markers in OEO page Key lt Del Res Auto Meas gt Addition of markers When this key is activated in the EOE page and Del Res gt is selected OEO measurement is erased as well as OTDR measurement for both origin and end traces When Auto Meas is selected auto measurement is performed once more for both origin and end traces resulting in a new OEO measure ment In order to modify a marker on any of both origin and end traces select cursor A or B position your cursor when you want to modify or add a marker and press the key Place marker lf there was no marker at this position a new one is added on both origin and end traces f there was two markers one on each of both origin and end traces both are delete
192. o display modify the data specific to the fiber name and code it is necessary to change direction temporarily In the O gt E direction the information on the origin can be edited and in the E gt O direction that on the extremity This line opens a sub menu all the parameters of which can be different for each extremity 4 n Py Direction View Extremity Origin Origin Cable ld End Location Color Coding Extremities are differs Fiber Ribborut iber Max Tube TubeiF iber TubeMlibbonFiber nananana Operator M Max Ribbon 12 Commem Max Fiber 24 Tube Coding TIA Aibbon Coding TA Fiber Coding TIA Code Definition Fig 84 Cable structure menu View Extremity If the extremities are declared different see Different extremities on page 225 on the lt View Extremity gt line it is possible to change from the Origin parameter to the Extremity parameter The Cable Structure window is specific to an extremity Each struc ture keeps its own parameters by default Modifications made to the one are not automatically applied to the other Thus after the values relating to the origin have been modified it is normal not to find these same values entered for the extremity Name of cable Name of link Color Coding Choice of whether or not to apply a color coding to the fiber This choice is made at link level as all the fibers of a given link for a given extremity will be coded the same way This ch
193. od the measurement is automatically done after the wait period selected see hereunder Wait Period The Wait Period parameter allows to enter a wait period before the measurement start onlyactive if Long Term is positioned on lt Period gt Increments of 5 seconds up to 1 minute then increments of 1 minute up to 10 minutes then increments of 5 minutes up to 60 minutes then increment of 1 hour up to 24 hours User Manual 780000102 09 99 Chapter 6 Optical Spectrum Measurement WDM OSA test configuration Measurement parameters Those parameters are only linked to the current active fiber Type WDM Module is used to measure the optical spectrum of an optical signal Standard WDM results are displayed in the results table See Display of the WDM OSA results page 106 EDFA Module is used to analyze results from an EDFA EDFA results are displayed in the results table See EDFA results analysis page 114 DFB Module is used to analyze results from a DFB DFB results are displayed in the results table See DFB results analysis page 117 Channel Selection Grid The grid serves as a detection reference it must therefore be Regular Manual ITU DWDM or ITU CWDM The choice of grid takes priority over the choice Channel Selection For example it is not possible to choose Channel selection Grid if the option selected for the grid is Without or Conventional PermanentAutomatic detect
194. ode page on 126 User Manual 780000102 09 135 Chapter 7 Polarization Mode Dispersion Measurement Display of results 136 Module Wavelength Number of Fiber Coupling Alarm reference acquisitions Length tae i Direction indicator PMD delay in PMD PMD second PMD second picoseconds Coefficient order delay order coefficient Fig 42 Example of a result obtained with the FFT method NOTE When several acquisitions are performed the trace resulting from the last acquisition is displayed PMD trace with FFT method The trace represents the delay distribution trace in ps Cursor within Spectrum display To move the cursor s on the trace press the Cursor menu key then use the direction arrow keys Ax and W or q and PD The coordinates of each cursor intersection with the trace are indicated underneath the trace User Manual 780000102 09 Chapter 7 Polarization Mode Dispersion Measurement Statistics results Zoom within Spectrum display In order to zoom in on the trace press the Zoom Shift menu key to display Zoom then use the direction arrow keys to zoom in either hori zontally or vertically The zoom of the display is made around the selected cursor s NOTE To reset the zoom and see the full trace press Full scale NOTE In FFT display mode data is displayed with an automatically calcu lated zoom Trace shifting within Spectrum display To shift the trace horizontally or vertically pres
195. of 1 dB is acceptable a BER is typically between 10 and 101 With this in mind the following formula could be applied L is the distance in km B the bit rate in Gbit s PMD the PMD value in ps km 2 L km 104 x 1 B x PMD User Manual 780000102 09 141 Chapter 7 Polarization Mode Dispersion Measurement PMD standards and limits 2 5 Gbit s STM16 OC 48 10 Gbit s STM64 OC 192 40 Gbit s STM128 0C 74 Fig 45 Abacus for a typical system maximum distance as a function of PMD coefficient for standard bit rates 142 User Manual 780000102 09 Attenuation profile This chapter describes the different steps in carrying out a Attenuation Profile AP measurement with a Base Unit equipped with a 81WDMPWMD full band plug in The topics discussed in this chapter are as follows Recommended equipment on page 144 AP Setup menu on page 144 AP Measurement on page 147 Performing a AP measurement on page 150 Display of AP results on page 152 File Management on page 154 It is assumed that you are familiar with the operation of the Base Unit and the Optical Broadband Source you are using User Manual 780000102 09 143 Chapter 8 Attenuation profile Recommended equipment Recommended equipment To perform a AP measurement the following equipment is recom mended Base Unit with a plug in or module as referenced above and associ ated optical connector OBS 15 E81BBS1 E81BBS2 or any
196. of the direction keys A The possible options then appear on the screen make your choiceising the direction keys q and p The various parameters proposed are defined below input Port Porta Sweep Averaging acquisition No Resolution Full Adopt Grd Splitter Compensation Tita Slope Gain Type Wavelength Range Full Notes Table No Unh EQsmorpa Ico Sosa euo j Fig 31 Configuration screen for optical spectrum measurements User Manual 780000102 09 97 Chapter 6 Optical Spectrum Measurement WDM OSA test configuration 98 Acquisition Parameters NOTE With 507XXX series and 81XXX series modules a warning message appears and the signal is cut off when the power of a channel is greater than 10 dBm or when the composite power of the input signal is greater than 20 dBm Input port This line only appears when the OSA201 module is used The choices are A acquisition on port A B acquisition on port B A B acquisition on both ports Acquisition band only appears when 81WDMPMD module is used OESCL Acquisition will be performed on full band SCL Acquisition will only be performed on S C and L bands Sweeps ContinuousThere will be a measurement with refreshment of the trace and real time display of the results every three seconds with plug in 81WDM every 1 5 seconds with modules OSA 16X OSA 20X OSA 30X every 6 seconds with plug in 81 WDMPMD Single Th
197. oice modifies the result of the lt Fiber Code gt line See Incrementing fiber number on page 224 User Manual 780000102 09 Cable content Chapter 13 File management File configuration menu Shows how the color code is to be used see figure Cable structure menu on page 226 lt Fiber gt Only the color code of the fiber is proposed example Gold lt Ribbon Fiber gt The color code of the fiber is preceded by that of the ribbon and separated by a example BI Or lt Tube Fiber gt The color code of the fiber is preceded by that of the tube and separated by a example Br Or lt Tube Ribbon Fiber gt Max tube Max ribbon Max fiber meee NOTE The color code of the fiber is preceded by that of the tube then by that of the ribbon the three being separated by a example Br Bl Or See Incrementing fiber number on page 224 Shows the maximum number of tubes in the cable for the extremity selected This information influences the automatic coding of the fiber See Incrementing fiber number on page 224 Shows the maximum number of ribbons in the cable for the extremity selected This information influences the automatic coding of the fiber See Incrementing fiber number on page 224 Shows the maximum number of fibers in the cable for the extremity selected This information influences the automatic coding of the fiber See Incr
198. on the function is used in a read only mode no module or the module has not been selected Gray icon the function has been selected but the corresponding module does not currently perform an acquisition Green icon the function has been selected and the corresponding module currently performs an acquisition The 7 softkeys at the side depend on the current configuration and the context Their use is symbolized by an icon Ea shows that the action is immediate when the key is pressed RE shows that the key gives access to a sub menu User Manual 780000102 09 Chapter 3 Graphical User Interface Using an external keyboard mouse and screen touch options F shows that the key will quit the sub menu green direction keys shows that the function selected by the O80 key will be controlled by the direction keys zo green confirmation key shows that the function selected will ai be controlled by the confirmation key Selection keys The selection may be exclusive only one choice possible or non exclu sive more than one option available at the same time ake This key offers two exclusive options The change of function occurs immediately the first time the key is pressed dGraph This key offers two non exclusive options Pressing the key miT aie repeatedly modifies the choice Color of the keys When a selection key is associated with direction keys or the confirma tion key if the functio
199. onal measurement is saved in two different SOR files User Manual 780000102 09 81 Chapter 5 Bi directional OTDR Performing a bi directional measurement meee NOTE For best use it is recommended to use the auto file naming with fiber code origin end lambda fiber name and auto store These parame ters are applied on the master Base Unit Performing a bi directional measurement Process The Process page displays the bi directional measurement steps Display whereas the Curve page displays the traces and results In order to display the Process page make sure you are currently under the OEO OTDR tab and press the key RESULTS The key View Curves View Process allows to change from the Curve page to the Process page and vice versa In order to select and follow the status of a measurement go to the Process page mw NOTE When a measurement has been started the slave Base Unit automat ically displays the Process page The Process screen is divided in three zones 1 Information zone Representation of the local Base Unit with identification Representation of the distant Base Unit with identification Status of the data connection grayed when the link has been cut or the connection not yet established yellow when the connection is operational Status of the fiber connection this is the status of the last tested fiber The fiber is represented cut and is grayed if the two units ar
200. onnection tion page to establish a before START connection User Manual 780000102 09 91 Chapter 5 Bi directional OTDR Troubleshooting Error message ross Possible solution problem No tab OEO No software option Bi directional mea OTDR on remote OEO OTDR on surement impossible if 8000 Unit remote Base Unit no software option on remote Base Unit Remote 8000 Unit not ready OTDR resource has not been selected Go back to the Sys tem page on the remote 8000 Unit to select the OTDR func tion No resource for remote 8000 Unit OTDR resource is already being used Stop measurement on remote 8000 Unit to free the resource No response from Data link problem Check the data con remote 8000 Unitt nection Warning errors resulting from checking No common laser acquisi Select a Base Unit equiped with common tion is impossible the same type OTDR plug in configurations Lasers are different Do you Yes measurement will occur want to continue using selected lasers common to both Base Units No measurement is stopped Acquisition configs are differ ent Transfer config to remote Yes the SETUP configuration is transferred and applied on the remote Base Unit No no configuration transfer the measurement is stopped File configs are different Transfer config to remote Yes the FILE configuration is transferred and applied to the remote Base Unit
201. ort gt Opens a sub menu with which the files in the directory can be sorted by name size type or date lt Send by mail gt This option appears if lt Mail gt has been defined with a media in the system setup menu The subject and the recipient of the mail are those set in the file setup menu see File expedition on page 229 Comments may be added This option allows to send files by e mail After a few seconds a message is displayed to inform the user that the mail has been sent successfully User Manual 780000102 09 Loading files and displaying traces Simple loading Load with configuration A Chapter 13 File management Explorer Function To access the functions for loading one or more files select the file s in the explorer and press Load Several options are then available The key View Trace s enables simple loading of traces using the current parameters of the Base Unit The current trace is then replaced with this new trace The key Load Trace Config will display the traces recalling the config uration recorded in the file Thus the zooms cursors and parameters present at the time of acquisition will be used for the display This function also enables to recall and set the parameters defined in the screens corresponding respectively to the FILE and SETUP keys It is then possible to perform an acquisition under the same conditions as those of the trace recalled Ifthe Base Unit was equipped with
202. r Manual 780000102 09 83 Chapter 5 Bi directional OTDR Performing a bi directional measurement Fiber link check Measurement process 84 Data connection status Fiber connection status Information zone User guide zone Measurement status zone Identifier of the origin or end of the fiber according to the direction OE or EQ Information Information concerning local concerning remote unit 1 unit Fig 29 Process page display To ensure that the two units are connected to the same fiber under test select Check same fiber If the fiber is the same at both extremities a E symbol will be displayed on the measurement status zone Fiber measurement Step 1 Choose to use the markers stored in memory or not by selecting Lock Evt or Free Evts NOTE If the markers events are already defined for the link you may select the Lock Evt key This implies that the unit will now perform measure ments with those markers Otherwise select Free Evts Press START to begin the measurement The line Verify if same set up on both units becomes In progress User Manual 780000102 09 Chapter 5 Bi directional OTDR Performing a bi directional measurement NOTE A warning may occur if the configurations of the two units are different see Warning errors resulting from checking common configurations page 92 The begin launch cable is transferred to the end launch cable and the end launch
203. r detection mode on page 165 The screen obtained after the acquisition or after pressing the RESULTS button displays the information seen in the paragraph Information always displayed on page 166 together with the OTDR detection trace azone atthe bottom of the screen giving the distance of the end of fiber and the position of the center of the future analysis window the OTDR detection mini trace to the left of the bar User Manual 780000102 09 167 Chapter 9 Measurement of chromatic dispersion Making a chromatic dispersion measurement 26062004 re 0993 aae ee Ree aa apoase ewa G b Le aT Fig 54 Detection of end of fiber Functions lt Start CD measurementTo start the CD measurement available lt Cursor A Cursor B gt To displace cursor A and or B use the Cursor key Placing of markers 168 Cursor A Cursor B to select the cursor or cursors then use the keys lt and p lt Zoom Shift gt To shift the trace horizontally or vertically press this key to display Shift then use the keys lt and gt until the desired shift is attained lt Change window gt You can change the position of the analysis window centered on the cursor in which a Fresnel peak is present due to a connector for example To do this position the cursor then press the Change window key to confirm your choice The message Analysis window centered at x xx km is updated After acquisition on the
204. r is first connected to the laser source via the refer ence fiber P1 is measured 2 Then the fiber to be tested is inserted between the reference fiber and the power meter P2 is measured The difference between P2 and P1 gives the attenuation of the fiber under test It is preferable to use the same type of connector at both ends of the fiber being tested to ensure the same connection conditions for measuring P1 and P2 14 User Manual 780000102 09 Chapter 1 Principles of measurement Standards and l0 for different types of fiber Standards and 10 for different types of fiber Fibre non offset offset forsenat dispersion dispersion offset dispersion Standard ITU Y ITU T G 652 ITU T G 653 ITU T G 655 Standard IEC IEC 60793 1 1 IEC 60793 1 1 IEC 60793 1 1 type B1 type B2 type B3 Standard TIA EIA Iva IVb IVb Approximate Ay 1310 nm 1550 nm 1500 nm or indefinite Most suitable method of approximation according to trace zone Fibre non offset dispersion offset dispersion non zero or homogeneous offset dispersion 1310 nm zone Sellmeier 3 term Sellmeier 5 term Sellmeier 5 term 1550 nm zone Sellmeier 5 term Complete curve Sellmeier 5 term Quadratic Sellmeier 5 term Sellmeier 5 term Sellmeier 5 term User Manual 780000102 09 15 Chapter 1 Principles of measurement Standards and 10 for different types of fiber 16 User Manu
205. ressed in nm between the main spectral component and the SMSR mode Peak Amplitude The power level of the main spectral component of the DFB laser Bandwidth Displayed bandwidth of the main spectral component of the DFB laser User Manual 780000102 09 Chapter 1 Principles of measurement PMD principle eak of the main spectral component Bandwidth Side Mod Supression Ratio 1 490 Min offset Max offset Fig 4 DFB measurements PMD principle The transmission rate and range are two of the most important parame ters of fiber optics paths and must therefore be optimized And since more and more paths including those already installed are being used for transmitting Wavelength Division Multiplex WDM signals or for bit rates of 10 Gbit s it is becoming all the more important to determine the Polarization Mode Dispersion PMD PMD which is the basic property of single mode fibers in particular affects the magnitude of the transmission rate It results from the differ ence in propagation times of the energy of a given wavelength which is split into two polarization layers that are at right angles to each other as shown in the below diagram The main causes of this birefringence are non circularities of the fiber itself and external stress on the fiber macro bending micro bending twist and temperature variations User Manual 780000102 09 7 Chapter 1 Principles of measurement PMD principle
206. results Functions available lt Lambda gt Activates one of the 4 traces the wavelength of the active trace is shown at the top left of the screen lt Zoom Shift gt To shift the trace horizontally or vertically press this key to show lt Shift gt then use the keys and p gt until the desired shift is obtained lt Cursor A Cursor B gt To displace cursor A and or B press the key to show lt Cursor A Cursor B gt then use the keys and p The wavelengths on which the cursors are positioned are displayed in the bar of the trace together with the difference in wavelength and power between the cursors lt Auto Marker gt Places the marker automatically at the peak of the reflective event of the active trace lt Manual Marker gt Places the marker on the active cursor If cursors A and B are both selected the marker will not be moved If the cursor is close to the marker the latter will be deleted lt Set Ref gt This key is grayed unless the zone of measurement chosen in the configuration menu is Section See Measurement of CD on a section on page 174 lt Exit gt Returns to the preceding result selection screen Delay Dispersion Slope These results depend on the choices made in the configuration menu upper and lower wavelengths incrementation step and standardization to 1 km The result screen obtained after pressing one of the keys lt Delay gt lt Dispersion gt or lt Slope gt displays th
207. results appear automatically after a few seconds User Manual 780000102 09 Chapter 6 Optical Spectrum Measurement DFB results analysis Select which DFB you are working on Fig 35 DFB measurements Cursors A and B are automatically positioned on the first DFB laser respectively on the max SMSR and the pick of the main component DFB results A table is displayed see DFB measurements page 119 showing for each DFB Channel Number of DFB laser detected Wavelen Wavelength expressed in nm of the DFB main component Level Peak amplitude expressed in dBm SMSR Side Mode Suppression Ratio expressed in dBc Mode off Mode Offset expressed in nm BW level Calculated bandwidth expressed in nm according to the bandwidth level expressed in dBc defined in the setup menu When the lt Channek key is selected use the arrow keys 4 and to move the cursor from one DFB pick to another both in the trace and in the table of results User Manual 780000102 09 119 Chapter 6 Optical Spectrum Measurement File Management Saving DFB results DFB Results are not saved in a file Nevertheless the trace may be stored as a regular WDM trace To save your files Click on FILE select name and Store Trace Click on RESULTS to come back to the previous screen Loading DFB results Results are not saved in a file Nevertheless the trace may be reloaded as a regular WDM trace Make sure
208. rge is used to merge several txt files from Manual ORL and LTS measurements into one txt file putting together the results of both measurement types Inthe explorer select the txt files generated with the LTS and Manual ORL measurements you want Click on Merge key The file merged_files txt is automatically saved in the same directory as the one where the ORL and LTS txt files have been selected User Manual 780000102 09 File editing function Format of files Easy file selection Chapter 13 File management Explorer Function NOTE The file merged_files txt can be renamed once it is saved The right hand part of the screen can be used to work on the files in the directory selected A table gives the list of the files in the directory showing for each one its name size type and date of creation For files recognized by the Base Unit the types are symbolized by icons E g OSA file OSA extension OTDR file SOR extension JE id OEO file OEO extension PMD file PMD extension CD file CD extension AP file AP extension LTS file LTS extension ORL file ORL extension BREF EF OTDR files that can be read by the Base Unit are type Bellcore 1 0 1 1 and 2 0 Other files that can be read by the Base Unit are specific to this instru ment To read other formats use JDSU s FiberTrace or FiberCable software The direction keys are used to position the cursor on the file to be
209. ro adjustment adjustment can be performed 1 Disconnect the jumper from the external power meter and wrap this jumper still connected to the FOX port around the mandrel 6 to 7 times 2 Click on ORL Zero 3 Push the Go key User Manual 780000102 09 197 Chapter 10 OFI Module FOX Function A Measurement 198 acquisition So EC i E Fig 68 Adjustement of the ORL Zero Once the reference has been taken the reference screen is updated for the wavelengths available on the local instrument It indicates the type of reference used Once the two references are complete the date as well as the type and serial number of the local instrument are displayed on the first line of the table If not the message Ref ORL Incomplete is displayed Before making an automatic FOX measurement check that both Base Units local and distant as well as the OFI module on each instrument are powered on and the FOX function selected the FOX function is correctly configured SETUP menu each end of the fiber is correctly connected to the module the fiber and jumpers are in good condition To display the fiber measurement page push the RESULTS key The page displays Both instruments connected to the link local and distant The Results table with the last measurement made The tested fiber parameters User Manual 780000102 09 Choosing the fiber to be tested Making the measurement Identif
210. rrive directly to the Results page You can now see the icon m at the top of the screen You are now ready to record Perform all actions you wish to record in your macro Click on SCRIPT when you are done and select End Macro You macro has now been saved Enter the name of your new macro in the text editor and confirm File macro This macro type shall be used to perform a template for multiple files To create a new file macro 1 Select a free position A sub menu automatically appears Change the Macro type if necessary to set it on File Click on the soft key Learn You arrive directly to the FILE page You can read the message Load file to start learning at the top of the screen Select the file you want to work with to perform all actions Load and view the corresponding trace You can now see the icon Mg at the top of the screen indicating that you are ready now to record Perform all actions you wish to record in your macro Click on SCRIPT when you are done and select End Macro You macro has now been saved User Manual 780000102 09 241 Chapter 14 Macros Macro recording Adding interaction to your macro Inserting a dialog box Inserting a message Inserting a pause 242 8 Enter the name of your new macro in the text editor and confirm Notes for standard macros also apply for file macros You may insert in your macro a special dialog box a message or a pause These features will b
211. rsor will move both on the trace and in the table if the trace and or the results table is displayed Results table Trace Table Enables the display on the trace and or the results table 8 lines of the results can be displayed below the trace or 20 lines with no trace The results table shows for each wavelength calculated using the wave length range and the incrementation parameter as seen in Wavelength Range on page 147 the attenuation profile in dB km and the total loss in dB File Management Storing If you had entered Auto store then the results will be saved automati Attenuation caly Profile not or if you want to store the results under another name directory etc measurements 1 Click on the FILE key 154 User Manual 780000102 09 Recalling AP files 2 3 4 Chapter 8 Attenuation profile File Management Select Setup with the key Setup Explorer Modify the parameters you want Click on Store Trace The Attenuation Profile traces are stored with the extension AP Once an AP file has been stored recall it using the Explorer 1 2 3 4 Select Explorer with the key Setup Explorer Using directions keys select the directory and then the file to open Click on Load Click on View Tace s or Load Trace Config The selected file is opened For further informations on file management see Chapter 13 File management User Manual 780000102 09 155 Chapter 8 Attenuation profile Fi
212. s 259 Dimensions and weight of WDM measurement plug ins 261 PMD plug ins 2c eee eee eee 261 CD modules 2 2 2 0s ss sista nee eee e ae Pee ee seed 262 Information on fiber plug ins 5020TF and 82LFSM2 S2LFSM4 rinna aena A tte EAA N 263 5O20TF plug in n on nunana aaae 263 82LFSM2 82LFSM4 plug ins nnen nananana 264 MTAU plug inS aassannnnnnnnnnnnnnnnnnnnnnn 265 BBS plug ins e iea dee ete ee cree ieee ee ete ee 265 OF I plug ins 22 22 fafa ete Sree ee 266 Standalone power meter 0000 cee ee eeee 268 WANO E Seo Aether eae er is a eae ee ere 268 Chapter 17 Options and accessories 269 References of measurement plug ins 270 User manual references 0000eeeeeeeee 273 References of optical connectors and adapters 274 xviii User Manual 780000102 09 Table of Contents Index 275 User Manual 780000102 09 xix Table of Contents XX User Manual 780000102 09 About this guide The MTS TBERD series of JDSU provides a portable modular platform designed for the construction validation and maintenance of optical fiber networks The modules described in this document are applicable for the following platforms MTS 8000 T BERD 8000 MTS 6000 T BERD 6000 The topics discussed in this chapter are as follows Purpose and scope on page xxii Assumptions on page xxii Technical assistance on page xxii Recycling Information on pa
213. s The topics discussed in this chapter are as follows Recommended equipment page on 124 PMD test setup menu page on 124 Performing a PMD measurement with a 5073XXX plug in or OSA 16X OSA 20X OSA 30X series module page on 129 Performing a PMD measurement with a 81XXX plug in page on 133 Display of results page on 135 Statistics results page on 137 File Management on page 139 PMD standards and limits page on 140 It is assumed that you are familiar with the operation of the Base Unit the OBS 15 Optical Broadband Source and the OVP 15 Optical Variable Polarizer options 1 Equipped with PMD test kit option User Manual 780000102 09 123 Chapter 7 Polarization Mode Dispersion Measurement Recommended equipment Recommended equipment To perform a PMD measurement the following equipment is recom mended Base Unit with a module or plug in as mentioned above and associ ated optical connectors OVP 15 Optical Variable Polarizer 90 with associated optical connectors for 5073XXX plug ins and OSA 16X OSA 20X OSA 30X series modules OBS 15 Optical Broadband Source output power level 0 dBm with associated optical connectors or E81BBS1 or E81BBS2 optical Broadband Sources Visual Fault Locator VFL with associated optical connector Fiber scope with associated optical connectors Cleaning kit Two jumpers with
214. s Results Screen parameters Configuration of files parameters Chapter 5 Bi directional OTDR Configuration of bi directional measurement Mode Bi directional measurement allows manual and Auto modes only Operation is the same as for OTDR measurement Launch cable start end This option allows the user to declare and describe the launch cables at the OTDR side of the other end of the fiber No No launch cable on Remote OTDR Evt1 2 3 Declaration of a launch cable on the remote OTDR distance given from selected event 1 2 or 3 Results related to this launch cable are eliminated from the table Distance Use the Edit Number key to enter a distance Min 0 Max 1 10 km 32 81 kfeet 6 22 miles Default value No Alarms the alarms applie to the measurements average and not to the measurements for each side as it is in the classical OTDR mode To access the files configuration menu of the OEO OTDR tab press the button FILE Related parameters are then displayed All parameters to describe the files the fiber and the link are proposed in order to save all measurements Please refer to File configuration menu page 220 Only differences are presented in this chapter File Type This option allows to choose to save a bi directional measurement under two different formats see File management page 90 A OEO file The bi directional measurement is saved in a single file Two SOR files The bi directi
215. s are the property of their respective companies This guide is a product of JDSU s Technical Information Development Department This manual gives you the main information to install start and use the 8100 Module Series JDSU has established processes in compliance with the Waste Electrical and Electronic Equipment WEEE Directive 2002 96 EC This product should not be disposed of as unsorted municipal waste and should be collected separately and disposed of according to your national regulations In the European Union all equipment purchased from JDSU after 2005 08 13 can be returned for disposal at the end of its useful life JDSU will ensure that all waste equipment returned is reused recycled or disposed of in an environmentally friendly manner and in compliance with all applicable national and international waste legislation User Manual 780000102 09 v vi It is the responsibility of the equipment owner to return the equipment to JDSU for appropriate disposal If the equipment was imported by a reseller whose name or logo is marked on the equipment then the owner should return the equipment directly to the reseller Instructions for returning waste equipment to JDSU can be found in the Environmental section of JDSU s web site at www jdsu com If you have questions concerning disposal of your equipment contact JDSU s WEEE Program Management team at WEEE EMEA jdsu com User Manual 780000102 09 Table of Contents
216. s guide Recycling Information During off hours you can request assistance by doing one of the following leave a voice mail message at the Technical Assistance number in your region e mail North American Technical Assistance Center tac jdsu com or European Technical Assistance Center support uk jdsu com submit your question using our online Technical Assistance Request form at www jdsu com Recycling Information pid JDSU recommends that customers dispose of their instruments and peripherals in an environnmentally sound manner Potential methods include reuse of parts or whole products and recycling of products components and or materials Waste Electrical and electronic Equipment WEEE Directive In the European Union this label indicates that this product should not be disposed of with household waste II should be deposited at an appro priate facility to enable recovery and recycling Conventions This guide uses naming conventions and symbols as described in the following tables Table 2 Typographical conventions Description Example User interface actions appear in On the Status bar click Start this typeface Buttons or switches that you Press the ON switch press on a unit appear in this TYPEFACE Code and output messages All results okay appear in this typeface User Manual 780000102 09 xxiii About this guide Conventions Table 2 Typographical conventions Continued D
217. s measured When there is saturation for a reflective event the maximum value measured is displayed with the sign gt This shows that the actual reflec tance is greater than the value shown for example if R gt 29 5 dB is displayed the reflectance could be 18 dB The reflectance of a ghost event is displayed in brackets on the trace Events Trace Event functions NOTE To display all the events make sure that the detection thresholds Splice and Reflection are positioned on All in the SETUP menu gt Detection To display the results on the trace make sure that the option selected in Results on Trace is All in the menu SETUP 1 The Trace function is useful in a multi trace display as the direction keys can then be used to select the active trace which turns green User Manual 780000102 09 57 Chapter 4 Reflectometry measurements Events 58 2 The Event function of the Base Unit enables the cursor to be moved on to the faults that have been measured and the results of which are displayed on the screen After selecting the Event function on the Trace Event key pressing the keys A W 4 or once will move the cursor from one event to the next This function in association with Zoom and Cursor enables rapid analysis of the fiber NOTE While moving from one event to another the value of the zoom is con served unless this is impossible Criteria for An event will be displayed if its attenuation or it
218. s reflectance exceeds the display of an Corresponding threshold selected in the SETUP menu see Acquisition parameters on page 45 Both results for an event will be displayed if they can be calculated The following table gives some examples of detection of events for different threshold values event The Base Unit displays a value Value of the if the attenuation or the E g thresholds reflectance has one of the following values Attenuat Reflect dB dB Attenuation Reflectance 0 05 60 gt 0 05 dB gt 60 dB 1 15 gt 1dB gt 15 dB 3 6 gt 6dB 1 Example a value will be displayed at 43 dB 2 Example a value will be displayed at 14 dB but not at 20 dB The reflectance of an event is always measured except when the event causes a saturated Fresnel peak or if it is drowned out by noise In this case the Base Unit displays gt to show that the actual reflectance exceeds the value displayed For example to detect all the splices on a fiber having attenuation greater than 0 05 dB select the different thresholds of the events to be detected in the menu called by the SETUP key in the Measurements gt Detection window Relative measurements using the two point method User Manual 780000102 09 Chapter 4 Reflectometry measurements Table of results can be carried out by means of the Event function in coordination with the two cursors For example you can analyze the
219. s the Zoom Shift menu key then use the direction arrow keys to make the required shift Statistics results Table of results Graphics display Statistics can be performed on a series of samples defined by the time between two consecutive samples Wait period and the number of samples The choice of these parameters must be done in the PMD SETUP menu Acquisition mode see Acquisition parameters page on 126 To display the statistic results press the RESULTS button When the statistics are activated the results are in a table giving for the four parameters PMD delay and coefficient PMD2 delay and coeffi cient current value average value min value max value and standard deviation Sdev The statistic results in the table are automatically updated with each acquisition When Statistic mode is selected the button lt Spectrum FFT gt becomes lt Spectrum FFT Drift Barchart gt User Manual 780000102 09 137 Chapter 7 Polarization Mode Dispersion Measurement Statistics results This button allows therefore to display alternatively two new windows The trace showing the delay drift during the acquisition time Fig 43 Example of drift The histogram providing the delay value for each acquisition Fig 44 Example of histogram Information Under the trace at the right hand corner a message indicates the current messages status of the trace or proposes the step to do next by clickin
220. ser bbe nur treeets ate eats Ure ftom Fig 64 Laser FOX parameters eer Corning TEM P9 imere ourme Spec tran a4 Unenpes ie Tit Fentows Coming SA 05 Corning S 15 Corning Leal tse All 1550 1310 1625 1550 1310 1550 1625 1310 1625 Length NOTE Measurement Loss Loss ORL Loss Length Loss ORL The acquisition and measurement parameters can change according to the OFI plug in used Group Refr Index Preset index 1550 SM Preset Index 1550 SM User de 1 30000 a 1 70000 Corning SMF 28 1 46810 Lucent Truewave 1 47320 SpecTran SM 1 46810 Litespec 1 46700 ATT SM 1 46700 Fitel Furukawa 1 47000 Corning SMF DS 1 47110 Corning SMF LS 1 47000 Corning Leaf 1 46840 E SMF 780000102 09 1 46450 File Storage parameters Establishing a reference Chapter 10 OFI Module FOX Function Alarms No Active used to set alarms Loss enter the loss threshold for each wavelength in dB ORL enter an ORL threshold for each wavelength in dB Delay enter a delay time in us Length indicative value changes according to the delay time and the fiber index To change the alarms values use the direction keys lt and or the numeric keypad Filenaming Cable_lId Fiber_Num Fiber_Code Auto Store Yes cannot be modified Fiber Nbr Increment Yes cannot be modified In the
221. sh to modify the name of an existing macro you may edit the name and change it as much as you want 1 Select the macro and select Name on the sub menu 2 Click on to open the text editor and type your name 3 Click on Confirm to accept your new name Both your actions and the actual configuration are saved when you create a new macro So when you play a macro back you have the choice between 1 Playing all actions and keeping the actual configuration Your actions are fairly independent of the configuration and you don t wish to modify the current configuration set Rewrite Config on No 2 Playing all actions and restoring the original configuration Your actions are very dependant of the configuration for example in case you need to do some measurements where you wish to keep all the acquisition parameters the same set Rewrite Config on Yes This setting will also allow to make sure all necessary modules are selected in the SYSTEM page before the macro is started It is strongly recommended to use the second method where all con figuration is restored before playing the macro Only experienced users might decide to do otherwise for different reasons Select an existing macro and click on the soft key Learn A message will be displayed asking you if you really wish to overwrite the macro Click Yes if you wish to continue Select an existing macro and click on the soft key Remove A message will be displayed asking you
222. source is used the START STOP key must be used to start or stop emission of light Power measurement Connect the light source to be tested to the rear connector see Connections to the power meter and the source page 184 In the SETUP menu choose the units dBm dB or Watts Press the START STOP key to start the laser The result will appear in the results page and can be memorized in the table see Table of results page 188 Press the START STOP key to stop the laser Optical link loss Setting the zero value of the power meter It is important to set the zero of the power meter before making any measurements where accuracy is required as the noise from the pho todiode fluctuates over time and with variations in temperature 2 Fix the plug over the optical input of the power meter so that no light can reach the photodiode of the power meter If the zero adjustment is made without this plug an error message may be displayed as the photodiode will detect too much light In the Results page press the Zero soft key Carrying out the reference measurement 1 Fix the adapter corresponding to the jumper to the optical connector of the power meter Connect the jumper between the input of the power meter and the output of the source Configure the same wavelength on the source and the power meter The power measured is displayed in the results page of the LTS Press the Set as Reference soft key to save the resul
223. ssi dispersion at 1550 nm for a given Chapter 9 Measurement of chromatic dispersion Source function Other calculation charts give the maximum cumulative chromatic disper sion for an attenuation of 1 dB as a function of the speed R given in Gbit s This calculation chart corresponds approximately to the formula D lt 105 R2 Total permissible coefficient of SDH SONET x link not standardized to 1 km 2 5 Gbit s STM 16 OC 48 12000 to 16000 ps nm 10 Gbit s STM 64 OC 192 800 to 1000 ps nm 40 Gbit s STM 256 OC 768 60 to 100 ps nm Standards such as G dsn from ITU T aim to provide more accurate calcu lation charts These calculation charts are given for information only They depend on the spectral pass band of the optical signal transmitted the modulation and the sensitivity of the receiver If the limits of chromatic dispersion are attained then appropriate compensators can be incorporated along the link to neutralize its effect These compensators introduce negative delay values to bring the system back within the permissible limits of CD Telcordia gives their specifications in the document entitled GR 2854 CORE Generic Requirements for Fiber Optic Dispersion Compensators In the absence of internal modulation lasers external modulation lasers can be used to limit the effects of chromatic dispersion most DFB lasers now have external modulation Source function The C
224. st her 1 tart FOX mode Vou start FOX mode Ne ee MAST Vou vie mofttetion thew fiber egan Vou text Eber again Dep tesan Mot ready wast lever mensoge sner mrunage I wrer merge J ener mov nage 4 Fig 72 Messages that can be sent to the distant Base Unit A menu with the 14 messages available is displayed Select the message to be sent using the direction keys amp and w To enter a user message select one of the last 4 messages called User message 1 2 3 4 and push the direction key p gt The edition keypad is displayed Enter the text you want and push the Valid key on the keypad or on the screen Push the Send Message or Select key oo distant Base Unit the message is displayed with the icon Press any key to delete the message mee NOTE If the link is not established between the two Base Unit the following error message is displayed No acknowledge received for the SMS sent 202 User Manual 780000102 09 Chapter 10 OFI Module Manual ORL Manual ORL The OFI module can be equipped with the ORL function option which allows to make an ORL manual measurement However before making this measurement the references have to be established once the ORL tab has been selected on the OFI module or on the Base Unit in the SYSTEM page E Gea Fig 73 Selection of the ORL function The functions LTS FOX and ORL can be selected at the same time A N on the OFI module However the LTS
225. st trace is now loaded for lt Acq In gt Select Acq Out before loading the second file and proceed the same way to load the second file Results appear automatically in the table DFB results analysis This feature applies solely to instruments OSA 16X OSA 20X OSA 30X DFB results analysis allows to characterize DFB lasers by giving the corresponding SMSR Offset and bandwidth values see the measure ment principles in DFB analysis page 6 User Manual 780000102 09 117 Chapter 6 Optical Spectrum Measurement DFB results analysis DFB test configuration DFB To configure the Base Unit in preparation for an DFB test press the setup button In the Measurements section set Type on DFB A new DFB sub menu is offered while other Setup parameters are the same for DFB as for WDM measurements Refer to WDM OSA test configuration page 96 for a complete description DFB sub menu Bandwidth level Level expressed in dBc where the main component bandwidth should be calculated Min SMSR Minimum offset value to consider to find the Side Mode Max SMSR Maximum offset value to consider to find the Side Mode Measurement procedure measurements Use a patchcord to connect your DFB laser source to an input port 118 of the OSA 16X OSA 20X OSA 30X module on the Base Unit Power on the DFB laser source Click START STOP to perform the acquisition The trace and corresponding
226. sure emitted power connect the power meter directly to the output of the optical emitter to measure the power at the input of an optical receiver the power meter is connected to the end of the fiber at the point where the optical receiver would be connected Attenuation For measurement of the attenuation of power in a complete link or in measurements ements such as sections of fiber connections or optical components a i A light source and a power meter are required optical link j i loss This attenuation is usually deduced from the measurement of optical power at two points User Manual 780000102 09 13 Chapter 1 Principles of measurement Principle of optical power and attenuation measurements OFI Laser light Power meter of source of the the Base Unit Base Unit Reference Link under test fiber Attenuation As P1 dBm 7 P2 dBm To perform accurate measurements the following conditions are vital Use one of the light sources of the LTS or a light source which is stable both in time and as a function of temperature Make sure that all connections and fibers and the receiving cell are perfectly clean Use a reference link between the laser source and the test subject If several measurements are to be made under identical light injec tion conditions this reference fiber must not be disconnected during the period while measurements are taking place Insertion loss method 1 The power mete
227. t 18 Removing a plug in from a receptacle 19 Inserting a plug in into receptacle 19 Universal connectors and adapters 20 Adapter types 00000 e eee eee 20 Switching adapter type 0 0c eee eee eee 20 Cleaning the universal connector 5 21 Installing a new version of the software 21 Where and how to obtain the new software 22 Downloading from Internet 000 0 eee eee 22 Installation from aPC ccc eee 22 Installation from the harddisk of aPC 22 Installation from the CD ROM drive of aPC 24 Installation from Ethernet 0 0 0 0 cee eens 25 Installation from a CD ROM MTS T BERD 8000 only 26 Installation from a CompactFlash memory card MTS T BERD SOOO0 ONIY cei kd ede whl edo od Meebo ed 26 Installation from a USB memory stick 27 Chapter 3 Graphical User Interface 29 Display screen 2 000 e eee ee 30 Top status bats Sy oe ee eee ee a ees 30 MII CES sesi eeror ce oe ena e gate aa Gece E sees 31 Signature of the measurement 005 31 Main display zone 0 cee ees 31 ADS 22 252 cbeenar an ae Soak atau ye E eects diva aha ben eae ete 31 SOM KEYS teen chee edie na AS eg eth he 32 ICONS 2h et ET EAE ante semen E ete prac anion ea 32 Selection keys 00 0 cece eee eee eee 33 Color of the keys
228. t 0 5 ps G 655 dispersion shifted single square km at 1550 nm mode optical fiber cable ITU T G 69 Optical interfaces for single No specified limit cha ter channel STM 64 STM 256 Refer to cable fiber properties 6 3 a systems and other SDH sys tems with optical amplifiers Limit of the second order coefficient PMD2 lt 0 2 ps nm km 140 User Manual 780000102 09 Chapter 7 Polarization Mode Dispersion Measurement PMD standards and limits Some organizations and standards are stating that 10 of the bit rate for the PMD delay can be tolerated for a system without disturbing the network performance by more than 1 dB loss at 1550 nm with NRZ coding cers Wea al hh cathe Delay Costticient Channel Limit For 400 km 55 Mbit s OC 1 19 3 ns 2 ns lt 96 155 Mbit s STM 1 OC 3 6 43 ns 640 ps lt 32 622 Mbit s STM 4 OC 12 1 61 ns 160 ps lt 8 1 2 Gbit s OC 24 803 ps 80 ps lt 4 2 5 Gbit s STM 16 OC 48 401 ps 40 ps lt 2 10 Gbit s STM 64 OC 192 100 ps 10 ps lt 0 5 40 Gbit s sa OC 768 25 12 ps 2 5 ps lt 0 125 Abacus for a You will find below the abacus for a typical system giving the maximum typical system distance as a function of PMD coefficient for given transmission bit rates This abacus is provided with the following assumptions the PMD is considered to be Maxwelliam NRZ coding is used 1550 nm lasers are used a maximum power penalty
229. t Yes Manual Mode In standard mode you can set your own parameters Configuration 1 Does not concern 81XXX plug ins User Manual 780000102 09 125 Chapter 7 Polarization Mode Dispersion Measurement PMD test setup menu f Test on aa was Swrep Continue PAevereging acquisition Auto Make Reference ves Fiber Length 600 0 km Meet miles Comping Stro Aderms Mone Spectral Unit nm Fig 36 PMD Test setup menu The different parameters proposed are described below Acquisition parameters mw NOTE When the composite power of the input signal is higher than 20 dBm a warning is displayed and the signal is cut off Acquisition band only appears when 81WDMPMD module is used OESCL Acquisition will be performed on the full band SCL Acquisition will only be performed on S C and L bands Mode Continue There is a continuous measurement with a trace refresh and a real time display of the results Single There will only be one measurement and display of the result Statistics A set of measurements can be performed providing statistics or results This mode also gives access to the two following parameters Wait period and Number of samples Averaging acquisition to improve the dynamic range of the unit No No average of the acquisition sample to be performed 126 User Manual 780000102 09 Chapter 7 Polarization Mode Dispersion Measurement PMD test setup menu Low Low averaging 4 samples
230. t displayed as reference value User Manual 780000102 09 Chapter 10 OFI Module FOX Function Measurements on the fiber under test After defining the reference value proceed as follows to make the measurement 1 Fix the jumpers and connectors needed to connect the fiber to be tested between the source output and the power meter input 2 Inthe set up menu select dB units 3 The power displayed in the Power Meter window corresponds to the optical loss of the link tested It can be displayed in the table see Table of results page 188 FOX Function Configuration of the FOX automatic _ measurement The FOX function is used to make automatical bidirectional optical power measurements and or ORL measurements at one or several wavelengths This function is also used to make a distance measurement of the link under test Two Base Unit are required each one equipped with an OFI module at each end of the fiber The OFI module 81xx is also compatible with the OFI 2000 With the FOX function the two Base Units can communicate and send messages to each other Two types of parameters can be modified in the FOX configuration of the OFI The Acquisition parameters The results screen parameters 1 Fiber Optic eXpert User Manual 780000102 09 191 Chapter 10 OFI Module FOX Function Acquisition parameters Results screen parameters Unit km kfeet miles 192 User Manual La
231. t result check the following points Error message Possible problem Possible solution Acquisition impossible Auto calibration is Wait for the calibration to be termi Hit any key to con not completed nated tinue User Manual 780000102 09 149 Chapter 8 Attenuation profile Performing a AP measurement Error message Possible problem Possible solution connections tinue Signal level too low Check source and Hit any key to con The OBS 15 or Press the ON OFF button to switch other source is not on the source verify if lt Make refer switched on ence gt is still set to lt Yes gt then repeat step 2 The OBS 15 or Check if the LOW BATT red led is other source bat lighted If yes then recharge the tery is too low battery Defective connec Check that the cables are properly tions connected and the notches on the connectors are correctly aligned Performing a AP measurement When the reference measurement of the broadband source has been completed use the following procedure to make a measurement 150 1 Disconnect the coupler and connect each end to each extremity of the fiber Press the SETUP button to access the Base Unit configuration menu Select the appropriate AP test setup according to your application as earlier defined in AP Setup menu on page 144 Press the START STOP button to see the results within a few seconds Rep
232. t screen and the test progress bar Athe end of the acquisition on the OTDR trace the cursor auto matically positions itself on the end of fiber If you consider that the marker is correctly placed on the end of fiber press the Start CD Measurement key to start the CD measurement Ifyou consider that the marker is not correctly placed on the end of fiber or the event to be analyzed adjust its position and then press Change Window to memorize this position Press the Start Measurement key to start the CD measurement Manual mode This mode must be used if the acquisition does not allow the placing of markers on one or more of the four OTDR traces due to insufficient dynamic To select it in the Configuration CD test menu choose Mode Manual augment the acquisition time to enable correct detection of the end of the fiber or the reflective event to be analyzed press the START STOP button to start the CD measurement NOTE If the reflective events are drowned in noise it is advisable to use ter mination connectors See Typical specifications of CD module on page 262 User Manual 780000102 09 165 Chapter 9 Measurement of chromatic dispersion Making a chromatic dispersion measurement End of acquisition Choice of CD result Return to this chosen screen Configuration Information always displayed 166 After an acquisition on the 4 wavelengths or after recall of CD results m
233. t value Yes if Yes the grid is present on the result screen Factory default value No Units of the distances displayed km kfeet miles When overlaying several traces see Overlay trace function on page 39 you can change each trace color Active curve allows to change the active curve color Curve 1 to 8 allows to change the selected curve color from trace 1 to 8 780000102 09 Chapter 4 Reflectometry measurements Acquisition NOTE To get the default color for each trace select the trace number and click on Factory Color When you change the trace color the new color is displayed at the right side of its value To obtain the configuration selected in the factory press the Factory Defaults key Acquisition There are 3 ways to start an OTDR acquisition with the Base Unit areal time mode in which the Base Unit makes acquisitions up to ten times per second and displays the resulting trace together with an indication of the state of the connection in real time an automatic mode which enables quick starting of an acquisition followed by automatic measurement amanual mode in which the acquisition parameters can be config ured as a function of the fiber to be tested The acquisition is followed by automatic measurement The mode of acquisition is selected after pressing the SETUP button on the Acquisition gt Mode line see Acquisition parameters on page 45 In the case of
234. ted dispersion For the other cases select Standard None None selected Selecting this option removes access to the Auto Values and Bit rate info options they will disappear from the screen Active To include any survey alarms The following fields are then enabled User Manual 780000102 09 161 Chapter 9 Measurement of chromatic dispersion Configuring the CD test 162 1st analysis window Auto Values Yes Threshold values and analysis band are automatically calculated and adjusted in accordance with the selected information from the Bit rate info table Bit rate info A table to the right of this option appears when Auto Values is set to Yes This table lists the available transport rates that can be used To make a choice use the direction arrow keys et gt Auto values No Threshold values are entered manually select the analysis band and the max dispersion threshold Analysis Band This option appears when Auto Values is set to No Select 1550 nm or C L band The max dispersion threshold will be considered only on that channel or band Disp Max ps nm This option appears when Auto Values is set to No Select here the max dispersion threshold from lt 200 to lt 90000 ps nm NOTE Max dispersion threshold is always considered on non normalized dispersion values The results are given in the form of curves delay dispersion slope and a table of results of which 8 lines are displayed if the
235. ter is not limited but the conditions for application of this method are nevertheless stipulated injection conditions Fresnel reflections must be limited at fiber input a high power source laser should be used receiver bandwidth should be chosen to achieve a compromise between pulse rise time and noise level backscatter power should be represented on a logarithmic scale Reflectance is a value with which the coefficient of reflection of a reflecting optical element can be quantified It is defined as the ratio of the power reflected by the element over the incident power These reflections are due to variations in refractive index all along the optical link in certain telecommunications applications If they are not controlled they may degrade the performance of the system by perturbing the operation of the emitting laser especially DFB lasers or may generate interference noise in the receiver by multiple reflections The reflectometer is particularly well suited to the measurement of discrete reflectances on an optical fiber link To calculate the coefficient of reflection it is necessary to measure the total amplitude of the Fresnel reflection generated and then to apply a conversion formula to obtain the reflectance value This formula takes into account the total amplitude of the reflection measured by the reflectometer the pulse width used to measure the amplitude of the reflection in nanoseco
236. the distance between the previous event which may also be the beginning of the link and the end of the slope Thus this section value is not equivalent to the distance between the two slope indicators and Slope shows the slope value in dB km If no result is displayed in the table the distance between the cursors A and B is too small To delete a particular slope measurement result superimpose the cursors A and B on the slope concerned select Slope after if necessary pressing Advanced and then Manual press amp the slope of the specified trace section is deleted There are two methods of carrying out manual measurements of splices on the trace the two cursor method and the five cursor method The five cursor method is the more accurate as it takes into account the difference of level between the slope before the splice and the slope after the splice This method should be used whenever possible If very close events have created a dead zone preventing the measure ment of slope by the five cursor method it is possible to use the two cursor method This considers the difference in level between the cursors Before performing one of these measurements go into the SETUP menu and define the splice detection threshold All is recommended Also confirm display of the results on the trace Results on Trace All or Graphics only To perform a splice measurement by the two points method disp
237. the end of fiber zone or on a Fresnel its position must be defined by the following Analysis window parameter End of fiber End of fiber detected by a reflectometry measurement Auto After automatic detection of the end of the fiber a CD measurement is taken on all four wavelengths User Manual 780000102 09 159 Chapter 9 Measurement of chromatic dispersion Configuring the CD test Parameters of 160 analysis Analysis window In manual mode enter the distance of the reflective event to be analyzed Fresnel corresponding for example to the end of the fiber The param etrization value will correspond to the center of the analysis window Measurement time Choose the duration of acquisition between 25 seconds and 10 minutes If the acquisition is performed on a single wavelength this is the acquisi tion time for that wavelength If the acquisition is performed on all 4 wavelengths it is the total acquisi tion time for all the wavelengths bearing in mind that 1 5 of this time is dedicated to acquisitions on wavelengths 1480 1550 1625 nm 2 5 of this timed is dedicated to acquisition on 1310 nm as this demands a higher number of averagings If the acquisition is done in auto mode the time shown does not take into account the time of detection of fiber ends 30 seconds Ref wavelength Choose one of the 4 wavelengths the result of the measurement for this wavelength will be the referen
238. the multiple wavelength modules the acquisition will be started on the different wavelengths successively if the option All is selected on the Acquisition gt Laser line Battery saver When running on battery if no acquisition has been performed for two minutes the power supply of the module is cut off to save the battery NOTE Traffic on the fiber under test is automatically detected and reported If the fiber connected to the OTDR module is active a message indicat ing a signal in the fiber under test is displayed You can therefore choose to continue the measurement or to stop it and to restart the measurement once the fiber is disconnected User Manual 780000102 09 51 Chapter 4 Reflectometry measurements Acquisition Real time mode Acquisition in real time must not be used if a precise measurement is required because of the high noise level but it is sufficient for rapid opti mization of a connection and for observing a fiber in process of utilization To carry out an acquisition in real time after selection of the requisite acquisition parameters see Acquisition parameters on page 45 either if Auto or Manual mode is selected in the SETUP menu hold the START key down for about two seconds when the acquisition in real time will begin or choose the Real time mode of acquisition in the SETUP menu then press the START STOP key The red Testing indicator will go on to show that real time acquisition is
239. the peak if the unit is nm or 25 GHz 50 GHz 100 GHz from the peak if the unit is THz Noise Acq Bandwidtht Reference bandwidth used for the acquisition of noise standard 100 pm values lie between 10 pm and 10 000 pm Splitter compensation When the measurement is made by the intermediary of a separator also known as a splitter it is possible to compensate for the loss introduced by this element and to display the value measured before or after it Go to the Splitter compensation line to display a sub menu proposing the following options Value Yes activation of compensation and choice of its value using the keys lt and p or the numeric keypad from 1 to 30 dB by increments of 1 or 1 to 99 by increments of 0 1 1 Attention all modification of these parameters has immediate repercussions on the trace and entails the loss of the measurement statistics User Manual 780000102 09 101 Chapter 6 Optical Spectrum Measurement WDM OSA test configuration Unit Choice of compensation in dB or as a percentage of the value measured For example with a 10 dB splitter the results will be augmented by 10 dB The trace will be offset upwards by 10 dB A channel measured at 30 dB will be displayed 20 cB Gain Tilt and Slope No Yes _ Validates measurement and display of the max difference in gain in dB and slope of the gain in dB per nm or by THz above the trace Parameters of displa
240. the test subject If several measurements are to be made under identical light injec tion conditions this reference fiber must not be disconnected during the period while measurements are taking place Insertion loss method 1 The power meter is first connected to the laser source via the refer ence fiber P1 is measured Then the fiber to be tested is inserted between the reference fiber and the power meter P2 is measured The difference between P2 and P1 gives the attenuation of the fiber under test It is preferable to use the same type of connector at both ends of the fiber being tested to ensure the same connection conditions for measuring P1 and P2 Accuracy of measurements A high degree of accuracy is often required It is then necessary to perform a preliminary calibration without the fiber under test to elim inate the losses due to connections as far as this is possible To do this use the Reference Value function User Manual 780000102 09 183 Chapter 10 OFI Module LTS function For measurements in the laboratory where both ends of the fiber are on the same site the repeatability of attenuation measurements is better than 0 1 dB For measurements in the field where the two ends are on different sites variations from one measurement to another are of the order of 0 2 dB using a relative measurement Connections to the power meter and the source Power meter connector FOX connector
241. then Manual Measurement User Manual 780000102 09 Chapter 4 Reflectometry measurements Manual measurements Measurements To make a manual measurement of slope press the RESULTS button to of slope call up the trace and then Place the cursor A at the beginning of the section of the trace where the slope is to be measured Place the cursor B at the end of this section Press the Advanced key then the Manual key then select Slope Press amp the slope of the specified trace section is displayed This red cross shows that an alarm threshold has been exceeded ne A 19 01 2004 17 02 _101625nm Event A 219973m 0 055 dB B 2667 18m 0 080 dB A B 467 45m 0 135 dB B gZoom H Shift g2 Pt Loss 5 Pt Loss S Total Orl Reflect dB Slope Splice Reflectance Fig 23 Measurement results Result of slope The result is displayed on the screen between the two slope indicators measurement and The measurement results are also available in the table which you can display in its entirety by selecting the Table function after pressing Exit twice to quit Advanced mode In the table distance shows the distance between the beginning of the trace and the end of the slope User Manual 780000102 09 67 Chapter 4 Reflectometry measurements Manual measurements Deleting a slope measurement Performing splice and reflectance measurements Two points method 68 section shows
242. tick will be irremediably lost 6 Connect the USB memory stick to the PC User Manual 780000102 09 27 Chapter 2 Getting started Installing a new version of the software Unzip the upgrade files on the PC and transfer it to the USB memory stick Insert the memory stick into one of the sockets on the Base Unit provided for this purpose meee NOTE A bip is emitted each time the USB memory stick is inserted or removed from the Base Unit 9 10 11 12 Press the SYSTEM button then successively the buttons Expert tools gt Software Upgrade gt Copy from USB The message Are you sure is displayed Click on Confirm The list of the software versions available on the PC is displayed next to the versions installed on the Base Unit Click on Previous choice or Next Choice to display the previous and next versions available Click on Confirm to start the upgrade of the selected software s Remove the key and insert it again when requested mee NOTE The software versions list does not always appear cf previous ver sions as well as the Previous Next Choice buttons and the Con firm Continue key In this case the upgrading starts automatically Upgrading begins The Base Unit is automatically rebooted Upgrading takes several minutes At the end the Base Unit is auto matically restarted if the boot version is superior to version 01 16 28 User Manual 780000102 09 Graphical User Interface This c
243. tion Before starting the software upgrade via Ethernet make sure the IP from Ethernet adress of the PC server 1 Press in succession Expert Tools gt Software Upgrade gt From Ethernet The message Indicate IP address of PC server appears 2 Click on Continue The list of the software versions available on the PC is displayed next to the versions installed on the Base Unit 3 Click on Previous choice or Next Choice to display the previous and next versions available 4 Click on Confirm to start the upgrade of the selected software s meee NOTE The software versions list does not always appear cf previous ver sions as well as the Previous Next Choice buttons and the Con firm Continue key In this case the upgrading starts automatically Upgrading begins The Base Unit is automatically rebooted Upgrading takes several minutes At the end the Base Unit is auto matically restarted if the boot version is superior to version 01 16 User Manual 780000102 09 25 Chapter 2 Getting started Installing a new version of the software Installation Updating from a CD ROM can be done directly if the Base Unit is from a CD ROM cauipped with a CD ROM drive MTS T BERD 8000 only 5 Connect the Base Unit into mains with the AC plug and switch it on Insert the CD ROM in the drive of the Base Unit 3 Press the SYSTEM key and then in succession the keys Expert Tools gt Software Upgrade gt Copy from CD The message
244. to perform successive acquisi wavelength tions on all the wavelengths acquisition inthe SETUP menu on the Laser line choose All start the acquisition manual or automatic by pressing the START button The different traces appear in the same window and can be handled simi larly to overlaid traces see Swapping overlay traces on page 41 Trace display functions The trace acquired or recalled from a memory is displayed on the Results page see example Figure 13 on page 30 A number of different functions can modify the display of the trace Cursors Zoom Shift Trace Event Graph Table Full Scale etc See page 35 56 User Manual 780000102 09 Displaying results on the trace Chapter 4 Reflectometry measurements Events See Overlaying several traces stored in memory on page 40 for overlay of traces The reflectometry trace is displayed with a dotted vertical line set on the end of launch cable if the Launch Cable is defined in the SETUP menu and a dotted vertical line on the end of fiber Each event detected is referenced under the trace by a serial number The results of the measurements of attenuation reflectance and slope can be marked on the trace Depending on the choice made in the SETUP menu on Result Screen gt Results on Trace it is possible to show on the trace No results All results value and position _or only the markers showing the position of the event
245. ts CW continuous emission The mode used is displayed above the icon A Power In CW mode you can choose the emitted power either the nominal value 3 5 dB or an attenuation of 3 or 6 dBm with regard to this nominal value to get a power of 6 5 dBm or of 9 5 dBm For all the other modes 270Hz 330Hz 1kHz 2 kHz Auto Twintest select one of the following emitted power 12 5 9 5 6 5 dBm The results page called up by the RESULTS button gives the information relating to the measurement in progress results previously saved and the commands available for measurement and saving The power measured by the power meter is displayed in large charac ters in the units selected in the SETUP menu together with the mode of transmission of the signal measured continuous CW or modulated to a frequency of 270Hz 330Hz 1KHz or 2KHz the wavelength of the signal measured the reference level expressed in dB the level of Attenuation Compensation For one and the same fiber the power meter displays a table of 9 results corresponding to the different possible wavelengths The table shows the power measured in dBm the relative power in dB and the reference level in dBm if units dB together with the mode A measurement result is displayed in the table when the Keep Result softkey is pressed The Clear Table softkey orders deletion of all the results displayed in the table If the Alarm f
246. ts of 1 256 1 1 Sub menu Sub menu Sub menu Sub menu accessible to accessible to accessible to accessible display the display the display the to display wavelengths wavelengths wavelengths of the wave Defi of each chan of eachchan each channel lengths of efine channels nel name the nel name the name the band each chan band and band and and name each nel name name each name each channel the band channel channel and name each chan nel User Manual 780000102 09 103 Chapter 6 Optical Spectrum Measurement WDM OSA test configuration 104 NOTE The maximum real number of channels for ITU grids depends on the value selected for the first channel and the spacing between the chan nels NOTE It is possible to display the grid with the lt View Grid gt key A table then appears showing the channel number the name of the channel the reference wavelength and the alarm thresholds for delta F min P max P and min SNR Table Notes No Yes Enables the display and entering of Notes in the table see Table notes page 112 Alarms When Channel Selection is positioned on Grid it is possible to activate an alarm system This system is based on a system of thresholds Any measurement results that exceed these thresholds are displayed in red in the table and the icon E appears at the top right of the screen If all the results are within the thresholds no result is in red the icon becomes To
247. ual 780000102 09 Chapter 4 Reflectometry measurements Configuring the reflectometry test Factory default settings The Factory Defaults key imposes the parameters for acquisition measurement and display of results defined as default settings in the factory Measurement You can select the following measurement parameters in the Measure parameters ments field Those parameters are valid for all traces present on the screen Detection Choice of events to be detected Splices All all splices will be detected None no splice will be detected or choose the threshold from which splices will be detected between 0 01 dB and 1 99 dB in steps of 0 01 dB Factory default value All Reflections All all reflections will be detected None no reflection will be detected or choose the threshold from which reflections will be detected between 99 and 11 in steps of 1 dB Factory default value All meee NOTE If no result is displayed after a measurement make sure that the parameter All is selected for the detection of splices and reflections Fiber end Auto recommended option in which the Base Unit automati cally detects the end of a fiber 3 to 20 dB in steps of 1 dB threshold of detection of end of fiber Factory default value Auto Bend Select the bend value in dB using the direction keys and or the numeric keypad User Manual 780000102 09 47 Chapter 4 Reflectometry measurements
248. uld result in death or serious injury CAUTION Indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury User Manual 780000102 09 XXV About this guide Conventions xxvi User Manual 780000102 09 Principles of measurement This chapter gives the principles of the measurements made by the reflectometer OTDR plug ins OSA spectrum analyzers WDM tech nology and PMD analyzers Polarization mode dispersion The topics discussed in this chapter are as follows Principle of reflectometry measurements on page 2 Principle of bi directional measurement on page 4 Principle of WDM OSA analysis on page 5 PMD principle on page 7 The principle of measurement of Chromatic Dispersion CD on page 9 Principle of optical power and attenuation measurements OFI on page 13 Standards and l0 for different types of fiber on page 15 User Manual 780000102 09 1 Chapter 1 Principles of measurement Principle of reflectometry measurements Principle of reflectometry measurements Information yielded by the measurement Optical time domain reflectometry consists in injecting a light pulse into one end of the optical fiber to be analyzed and observing at the same end the optical intensity passing through the fiber in the opposite direc tion to the propagation of the pulse The signal detected is exponenti
249. unction has been activated any result that exceeds the selected thresholds appears in red in the table Otherwise results are shown in the table in green User Manual 780000102 09 Commands of the Chapter 10 OFI Module LTS function When the instrument is switched off results present in the table are saved LE w aren 1310 Results of the power meter Wetereriee roet Fig 63 Results and commands of the LTS When the LTS function is selected the following softkeys are available power meter on the results page parameters Making a measurement lt Set as reference gt Selects the current result as reference value to measure the attenuation of a link This reference is displayed under the measurement result until a new reference value is chosen lt Zero gt Adjustment of the Zero value when the power meter s optical input is closed with a plug lt Keep Result gt Saves the result on the corresponding line of the table lt Clear Table gt Deletes all the results recorded in the table The power meter is started up as soon as the LTS function zn is acti vated in the SETUP menu User Manual 780000102 09 189 Chapter 10 OFI Module LTS function 190 gue NOTE Power measurement is automatically updated in consequence The value lt 60 dB is displayed when the laser is switched off and if the source output is looped on to the power meter input If the OFI module s
250. unctions 0 02200055 106 Display of the WDM OSA results 000 106 Table of results 0000 eee eee 110 Channel filtering 0 00 e eee eee 113 Field of application 00 ce eee eee 113 Contiguration ee esi en dae ds ote wade tees 113 Using channel filtering 0 0 e eee eee eee 114 User Manual 780000102 09 xi Table of Contents EDFA results analysis 00 200 eee ee eee 114 EDFA test configuration 0 ee eee eee eee 114 EDFA measurements 000 c eee eee 115 EDFA results pesa beet eed phen badd eed beans 116 DFB results analysis 00 20 ee eee eens 117 DFB test configuration 0 02 eee eee eee 118 DFB measurements 0000 eee eee eee 118 DEB res ls aye en a dats el E 119 File Management 20 eee eee eee eee eee 120 Storing OSA measurements 200000000 120 Recalling OSA files 2 0 0 0 0 eee eee eee 120 Chapter 7 Polarization Mode Dispersion Measurement 123 Recommended equipment 2 0 eeeeeeeee 124 PMD test setup MenU 2200 eee eee eee 124 Test Auto Configuration 00055 125 Manual Mode Configuration 0 125 Acquisition parameters 000000 eee eeeee 126 Fiber parameters 0 00 cece eee eee 128 Results Screen parameters 0 000 0 0c eee 128 Performing a PMD measurement with a 5073XXX plug in or OSA
251. uration of files parameters 0 0005 81 Performing a bi directional measurement 82 Process Display ra RA eE E a RA EEEE EEA 82 Fiber link check miera aeae eee eee eens 84 Measurement process 00002 0c eee eee eee 84 Trace display functions 2200000e 87 Origin and End traces 0 0 cee eee eee ee 88 OEO trace whit eee ee epee dae ee 88 OEO Result table 0000 cece eee eee 89 Automatic measurement and Addition of markers in OEO PAGE 2 area ee eas eae ee aa aw ee eee aa a 89 Key lt Del Res Auto Meas gt 0022000 eae 89 Addition of markers 0 cee eee eee eee 89 Markers display 0 cece eee ee eee 90 File management 20 2 eee eee eee eee eee 90 Storing OEO measurements 00000 eee eee 90 Recalling OEO traces 0 0 0 cece eee 90 Test of a cable 00 ccc eee 91 Troubleshooting 020 ee cece eee eee eee 91 Warning errors after pressing the key START 91 Warning errors resulting from checking common configurations 92 Chapter 6 Optical Spectrum Measurement 95 Configuration of the instrument 96 WDM OSA test configuration 005 96 Acquisition Parameters 000020 cee eee 98 Measurement parameters 0 eee eee ees 100 Parameters of display and analysis of the results 102 ACQUISIUION essri earan ee eke eee vee ae 106 Trace display f
252. very extremity of the fiber to test at the same time A data connection is established between the two talkset ports of the units via another fiber in order to exchange orders configurations and measurement results mu NOTE For automatic bidirectional OTDR testing two units having the talset option and the E80 bidirectional option are rquired 78 User Manual 780000102 09 A A Summary of the automatic operation procedure Chapter 5 Bi directional OTDR Description of the measurement Tested Fiber Example with 80000 series Fully automatic bi directional acquisitions can not be performed with out a data connection see Data transfer in the user manual of the Base Unit reference 8000M02 for example Please check that the OTDR function has been selected see Selecting the function page 44 For best measurements and in order to qualify the fiber link and con nectors launch cables shall be inserted between the OTDR modules and the link Test if both units are linked to the same fiber Consistency verification of the OTDR plug in between the two units Consistency verification of acquisition configuration measurement and files fiber and link definition Then transfer of the master unit configuration to the slave unit if necessary Acquisition start on the master unit Trace transfer to the slave unit Acquisition start on the slave unit Trace transfer to the master unit Bi
253. view of the Base Unit example Removing a plug in froma receptacle The Base Unit must be switched off and if it has a mains power sup A N ply the adapter cable must be unplugged 1 Completely unscrew up to the stop the two captive screws securing the plug in 2 Carefully slide the plug in out of its slot Inserting a plug in into receptacle The Base Unit must be switched off and if it has a mains power sup A N ply the adapter cable must be unplugged 1 Slide the plug in into its slot 2 When itis fully home press against the screen printed surface of the plug in while tightening the the securing screws The screen printed surface of the plug in must be flush with that of the recep tacle 3 Make sure that the two large captive screws of the plug in are screwed fully home User Manual 780000102 09 19 Chapter 2 Getting started Universal connectors and adapters gue NOTE UHD plug ins use very powerful lasers they must be connected exclusively to optical connectors equiped with zirconium ferules Using connectors equiped with metallic ferrules could damage the plug in connector Universal connectors and adapters Fiber Optic plug ins may come equipped with a universal connector and adapter selected at time of order Adapter types JDSU offers 5 different adapters all compatible with this connector allowing the user to switch from one adapter to another according to which fiber type he intends to work
254. wavelengths available on the local instrument It indicates the type of reference used The date of the reference as well as the type and serial number of the local instrument are indicated on the first line of the table If the reference is correct disconnect the jumper in order to connect the fiber to be tested If the reference is not correct take a new reference Two steps must be carried out to take a reference for a ORL measure ment 1 Power emitted reference 2 Zero ORL adjustment Follow the order given above to take the reference They are not two different processes but two steps necessary to establish a reference for an ORL measurement NOTE As ORL is an option establishing a reference for this measurement is not automatically available with the OFI module 1 Link the FOX port to the power meter input port via a jumper 2 Click on ORL Power Emitted 3 Click on the Go key The power measurement from the laser signal emitted is completed User Manual 780000102 09 Chapter 10 OFI Module FOX Function Fig 67 Establishing a reference for an ORL measurement Once the reference has been taken the reference screen is updated for the wavelengths available on the local instrument It indicates the type of reference used As the Zero mesurement as not yet been done the first line of the table displays the message Ref ORL Incomplete ORL Zero Once the Power Emitted measurement has been carried out the Ze
255. will be saved automati cally If not or if you want to store the results under another name directory etc 1 Click on the FILE key 2 Select Setup with the key Setup Explorer 3 Modify the parameters you want 4 Click on Store Trace The OTDR traces are stored with the extension SOR Once a OTDR file has been stored recall it using the Explorer 1 Select Explorer with the key Setup Explorer 2 Using directions keys select the directory and then the file to open 3 Click on Load 4 Click on View Tace s or Load Trace Config User Manual 780000102 09 75 Chapter 4 Reflectometry measurements File Management The selected file is opened For further informations on file management see Chapter 13 File management on page 219 76 User Manual 780000102 09 Bi directional OTDR This chapter describes the different steps to perform an automatic bi directional measurement also called OEO measurement Origin End Origin This measurement requires that two 8000 Base Units are connected at each extremity of the fiber under test Every Base Unit must be equipped with the software option called OEO OTDR and with both optical talkset and OTDR plug in It is strongly recommended that the same type of OTDR is used AN same reference at each extremity of the fiber The topics discussed in this chapter are as follows Definition of terms used on page 78 Description of the measurement on page
256. y and analysis of the results Those parameters are valid for all traces present on the screen Grid Go to the Grid line to access the Grid sub menu Select the Type line to see the different choices and modify them if required Five possible types of grid are proposed with different corresponding values some of which are fixed or non applicable others editable The type Conventional and the option Without do not give access to the parameters of the Grid sub menu the others give access to certain options as shown in the table of the figure 102 User Manual 780000102 09 Chapter 6 Optical Spectrum Measurement WDM OSA test configuration Table 1 Grid menu options for each type of grid ITU CWDM ITU DWDM Regular Manual Grid name Editable Editable Editable Editable ITU G 694 2 G 692 N A N A standard Editable from Editable from Editable from N A First ITU 1270 to 1630 1528 77 to 1260 to 1650 channel nm by incre 1560 61 nm nm by incre with ments of 20 by increments ments of 0 01 nm correspond nm display in ing to the nm channel spac ing selected 20 nm Editable from Editable from N A 25 to 200 GHz 20 to 1000 GHz Channel by increments spacing on at each click of 10 if key is held down Editable from Editable from Editable from 1 Editable Number of 1 to 19 by 1 to 21 by to 56 by incre from 1 to channels increments of increments of men
257. ying the distant module Chapter 10 OFI Module FOX Function Once the results page is displayed push the START STOP button The details of the next fiber to be tested are displayed Cable id cable 1 Fiber id JDSU Fiber Number 25 Fiber Code Orel Fig 69 Details of the following fiber to be tested To test a different fiber to the one displayed select the new fiber according to its number or its color code Use the direction keys and to change the number or color code of the fiber to be tested Changing the fiber number involves a modification of the color code and vice versa Before making the measurement check that the reference measure ments are correct see Establishing a reference page 193 Push the START STOP button once more to start the measurement of the selected fiber The results are displayed as the sequence progresses on both Base Units During the measurement the soft keys on the right of the screen are inactive Once the measurement has finished the Base Unit beeps to signal the end of the sequence The beep differs depending on wether the measurement has completed correctly or according to the measurement alarm status Before making a measurement you can check presence of the distant module Once the results page is displayed click on Identify distant The distant module identification is made automatically User Manual 780000102 09 199 Chapter 10 OFI Module FOX Function _ D

- FOSS AS

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