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FTE-7500 OTDR USER'S MANUAL

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1. Video Probe Port USB USB Flash 13 6 VDC I 4 vid Probe Power Meter Port if installed MM SM OTDR Port OTDR Port Fig 5 1 Physical continued Front View Charge Indicator Optical Time Domain Reflectometer Zoom tx E E Recall 020 EE Display Auto Test Select Key Pad m Scroll Wheel Fig 52 5 3 Display Soft Keys Zoom 1x Cursor Save001 Recall 001 Show Event Help Icon Display i B Field con Bar Battery Fig 5 3 Revision B TF 7 29 2011 6 I ly 6 0 6 1 6 2 6 3 6 4 6 5 6 6 Feature Description Operation Battery Level Power Indicator The bottom right hand corner of the screen shows the battery level and charge indicator In the final hour of operation the battery will change to red A warning indicator will sound a few minutes before the instrument automatically turns off Ensure the unit is turned off when plugging in the Battery Charger When the OTDR is plugged in the AC power the charge light will be lit Fig 5 2 The charge light will dim when the batter is fully charged Also the battery indicator section on the display Fig 5 3 will display an AC Plug alongside the battery when operating on AC power Help Feature The Advanced OTDR has an onboard help feature To access the help feature press the Menu button scroll to highlight the Question Mark icon and press the Select button Scroll to the desired topic and press the Select button Use the scroll wheel to move dow
2. Ir 7 29 2011 8 5 AVG Use the scroll wheel to highlight the Average AVG icon and use Select button to cycle through Real time averaging with a up to 4 pps refresh rate Short average 712 seconds or long average 5 minutes Changing this setting will also initiate a scan Pulse Width Use the scroll wheel to highlight the PW icon and use the Select button to cycle through the pulse widths of 2m 10m 100m and 1k Making changes to the pulse width automatically changes the range setting to ensure proper measurement parameters are maintained example if the unit is in short range at 2 meters when the pulse width is changed to 10m the range will change to 4Km which is the short range for the 10m pulse width Changing this setting will also initiate the scan process Range Use the scroll wheel to highlight the RNG icon and use the Select button to toggle between the two ranges available per pulse width Changing this setting will also initiate the scan process Viewing a Trace Zoom There are five zoom levels 1x 2x 4x 8x and 16x The current level is indicated next to the soft button at the top of the display There are two methods to change the zoom level The soft key on the top of the display may be used to cycle through the zoom levels by entering menu mode scroll to highlight the Zoom soft key and using the Select button to cycle through the zoom levels or simply pressing the Zoom Button Note The values per d
3. Press Select on the blank character until all characters have been removed Conduct The Tests Connect a fiber to the proper test port and press the Autotest button The OTDR will conduct the test at the first wavelength and store the trace in memory using the base file name given and the default notes attached The second wavelength is then started and once complete it is also stored to memory and then both traces are displayed for review Disconnect the fiber connect the next fiber and press Autotest The two tests will be completed stored and displayed Continue on until all fibers are tested Manual Scan Setting After powering on the OTDR Enter the menu mode by pressing the Menu button and scroll to the parameter keys to set all the necessary parameters to the appropriate values These parameters include IOR It is necessary to have the Index of Refraction set as close as possible to the actual IOR of the fiber If this is unknown it is best to use the default setting on the OTDR To change the IOR highlight the IOR icon and press the Select button Use the Scroll wheel to change the IOR value When the desired value is reached press the select button again and the OTDR will prompt the user to save or cancel the changes Use the scroll Wheel to highlight desired action and press the Select button Wavelength Use the scroll wheel to highlight the Lambda key press select to cycle through the available wavelengths Revision B 13
4. Rate and choose Auto Detect or desired baud rate Return to Tools Tab and select Download LTS Files enter a file name and press Save The Software will prompt the user to start the Loss Test Set memory download from the OTDR To start the memory download enter Menu mode highlight the File Download Icon and press Select The download progress will be indicated by the UPLOAD counter in the bottom left corner of the display Note If there is a communication error occurs ensure you turn off and restart the OTDR Loss Test Set Graph Mode Operation To view measurements in the Graph Mode press the Menu button scroll to the Light Source soft key and use the Select button to cycle to the desired wavelength for the test If a source other than one compatible for auto wavelength recognition with the OTDR is being used ensure the proper power meter wavelength is selected Once the source is energized and the power meter is taking a measurement enter the Menu mode scroll to the Eye Icon view press Select and the Scan button to start the graph Pressing the Scan button again will stop the graph The elapsed time of the scan is noted at the beginning middle and end of the graph with the absolute value at each of those points displayed The graph may also be viewed on the certification software Please refer to the software for information on how to display the graph view on the computer To exit the Graph Mode press the select button again with the Eye I
5. Source Change the modulation of the light source by entering Menu mode and scrolling to highlight the Modulation soft key Pressing the select button will toggle through available modulation rates of CW 270Hz 1000Hz and 2000Hz The rate will be displayed directly under the Modulation soft key Note that when measuring average power of the lasers the output will drop by exactly 3 01 dB as the source is off precisely half of the time The modulation function is useful for fiber identification and for general purpose optical component testing The unit that receives one of the modulated frequencies will flash the appropriate frequency annunciator The 3 01dB drop is also true of the laser output when in the Auto Test mode however the unit receiving this signal automatically compensates for the loss in average power and this is transparent to the user LTS File Selector Operation File Selector Screen Enter the File Selector Screen with the scroll wheel In the File Selector screen the soft keys will be inactive and grayed out The Store location in the bottom left of the screen will be changed to MEM location and there will be three loss values on the display The middle one is the measurement stored in the indicated memory location with the wavelength of the reading to the right Pressing the A B button will cycle through the readings stored in that location if more than one wavelength was stored The grayed out readings above and below the main
6. baud rate highlight the COM Baud Rate tool press the Select button and a dialog with the available settings is displayed Use the scroll wheel to select baud rates from 115k to 921k Press the Select button again to select the baud rate and close the dialog Screen Shot m Revision B 9 I 7 29 2011 The Advanced OTDR is equipped with a Screen Shot tool This feature will only write files directly to the flash drive To write a bmp to the flash drive highlight the Take a Screenshot tool Press the Select button the display will revert to the previous screen and progress will be shown by the inverse color pattern progressing from the bottom to the top of the screen The process is complete when the display returns to the normal color The file name will be SShhmmss bmp where h hour m minute and s second If no flash drive is detected an error message will be displayed Note Do Not Remove USB Flash Drive While Accessing Note This method is not used with the Video Probe The video probe has its own method of saving amp copying files Trace Smoothing Note Smoothing is NOT meant to be used when using the Event Table Smoothing will smooth the trace for visual interpretation however it will cause excess events the event table Reflective events could be adversely affected in noisy environments Smoothing helps reduce noise in a trace to better visually discern events To set Smoothing levels or to turn Smoothing off hi
7. be necessary to reset the time and date information in the Tools Menu Laser Out Port Do not under any circumstance view or inspect the laser output fibers connectors or the fiber under test through collimating or focusing optics A video inspection microscope should be used to examine all fiber ends Contact your TTI sales representative for video microscope information WARNING Never clean or look directly into the fiber optic connector or the end of fiber attached to the OTDR or VFL unit while they are energized to do so will expose the user to laser radiation and could result in personal injury or instrument damage WARNING Before connecting to a patch cord or fiber under test be certain the fiber has no active optical Sources or instruments connected to the other end Skin or eye damage could result from other high power sources e g EDFAs or instrument damage could occur voiding the warranty In order to maintain a low loss fiber connection care should be taken to adequately clean the ferrule of any connector to be inserted in the Laser Out Port In the event that the port needs to be cleaned first step is to be certain the instrument is off We suggest the use of isopropyl alcohol and foam swabs specifically designed for cleaning connectors accepting 2 5mm ferrules Recalibration and Verification Periodic verification of the ADVANCED OTDR is recommended to ensure that your instrument remains within specification Although not i
8. date time stamp Revision B 19 Ir 7 29 2011 10 6 10 7 10 8 10 9 10 10 10 11 Dual Trace Note To compare two traces they must have the same range settings Have a trace on the display either a trace just taken or one from file storage Enter the file management mode highlight the trace to be placed in the background press the Menu button scroll to the Dual soft key and press Select The background trace will be displayed in green All the measurement information will be derived from the main trace If the trace for the background does not have the same range as the main trace a range mismatch message will be displayed Press the Select button to clear the message To exit the Dual Trace mode start a new scan or open a new main trace from the file management Marking Traces for Mass Coping and Deleting When in the File Management System scroll to highlight the first trace to be copied or deleted Press the Menu button and scroll to the Mark soft key and press Select To mark 1 or 2 files for mass copying press the Select button and the highlighted trace will be displayed in red font and the next trace will be highlighted pressing select again will mark the highlighted file and continue to the next file The red font indicates that the trace is marked for mass management To mark a large number of files the Scroll Wheel may be used While in the Mark file mode scrolling down forward lower to higher number files will
9. install NiMH batteries that are dead or less than 1 volt each charge these batteries for one 1 hour before using the Advanced OTDR For maintenance batteries require a monthly periodic recharge WARNING To Prevent Fire or Shock Hazard Do not install other battery types Do not use the charger without the batteries installed Do not expose the battery charger to rain or excessive moisture Do not use the AC adapter when there are signs of damage to the enclosure or cord Ensure that you are using the correct charger for the local line voltage Do not use any other charger than the one provided with this instrument Any other condition will void the warranty Laser Safety The OTDR has been configured with laser diodes having central wavelengths of 850nm 1300nm 1310nm 1490 1550 or 1625nm The unit has been designed to comply with 21 CFR Code of Federal Regulations 1040 10 and 1040 11 for Class emission limits Although the CDRH does not consider Class 1 levels to be hazardous we suggest limiting exposure by not looking directly into the laser aperture Also do not under any circumstance view or inspect the laser output fibers connectors or the fiber under test through collimating or focusing optics unless the unit is turned off batteries are removed and power adapter is disconnected The VFL is equipped with a 650nm Class II laser WARNING Never clean or look directly into the fiber optic connector or the end of fiber attached to th
10. memory are also available for the Flash drive Revision B 20 Tri 7 29 2011 11 0 Loss Test Set Description 11 1 Entering Loss Test Set Mode To enter the LTS mode Press the Menu button use the Scroll Auto Test Wheel to highlight the LTS Icon located at the bottom of the icon list and press Select Key Pad Operation O Power button turns the unit On and Off Scan Resets any temporarily memory values before they have been stored with the select button Autolest Starts the Auto Test function The light source will be turned on and cycle through the wavelengths selected with the A Icon Menu Toggles between the Test Mode and the Menu mode where the focus of the Scroll Wheel and the Select Button are on the soft keys and icons A B Cycles through the power meter wavelengths selected with the Alcon When in the File Selection Screen this key will toggle through save wavelength values for a particular storage position Zoom Changes the display to the zoom screen where all stored test for a memory location are display There can be up to 4 test stored per location Revision B 21 7 29 2011 Select Fig 11 1 The Select Button will store all measurements in the temporary memory to the storage position shown the bottom left corner while in the Test Mode and while in the Menu mode it will activate an icon item or soft key iu S Scroll Wheel When the Scroll Wheel is moved the Fil
11. through the evens If the Select button is pressed while an event is highlighted The OTDR will revert to the Trace Screen with the active cursor positioned at the selected event An alternative method to return to the trace view is to press the Menu button scroll to the Show Trace soft key and press the Select button Event Table Display ft k Salt keys Sense Hi Splice 4120 ORL lt 60 LinkLoss lt 5 Show Trace Io Event fe P F ww SPLICE 2POINT OB KM TYPE st Number Scroll Bar Page of Total Pages Trace End of Parameters Fiber Event 2 Point Event Location Loss Type Fig 9 1 Table Definitions Event Number Indicates the event in sequence where the higher the number the further distance from the OTDR the event occurs E which is always displayed in the bottom row is the event determined to be the End of Fiber EOF P F Pass Fail if any one of the thresholds are not met for and event the P F column will display a red X The parameter that failed will also be displayed in red If all the parameters are met a green check mark will be displayed KM Event Location Km for Kilometer or KF if unit of measure is Kilo feet This is the distance location that the event occurs in the respective unit of measure Revision B 17 Tipy 7 29 2011 9 3 9 4 SPLICE Event Loss where a positive number is the amount of loss and a negative number would be indicating a gain This is a settable threshold for the Pass Fa
12. 1 4 Soft Keys Operation Source 8dBm Fig 11 5 Center Cursor Enter the Menu mode and use the Scroll Wheel to highlight the Source soft key Press the Select button to cycle through the available wavelengths See Lambda wavelength icon information below The displayed source wavelength is the active source Turn off all sources by cycling to the Off position Power Meter Enter the Menu mode and use the Scroll Wheel to highlight the Power Meter soft key Press the Select button to cycle through the available wavelengths See Lambda wavelength icon information below The shown power meter wavelength is the one being tested Modulation There are four source modulation settings 270 Hz 1000Hz 2000Hz and CW constant wave To change the modulation setting enter Menu mode and use the Scroll Wheel to highlight the Modulation soft key Press the Select button to cycle through the modulation rates Revision B 23 7 29 2011 eraheriz Technologies I i 11 5 Loss Test Set Icon List Help The Loss Test Set has an onboard help feature To access the help feature enter the Menu button use the scroll wheel to highlight the Question Mark Icon and press the Select button Scroll to the desired topic and press the Select button Press the Menu button again to exit the help feature Delete Deleting a stored loss measurement is accomplished in the File Selector mode see LTS File Selector operation Section 12 4 To delete a measure
13. B flash drive With a trace highlighted or group of trace marked press the Menu button and scroll to the Delete soft key Press Select and Cancel or Confirm Delete will be displayed at the top of the screen Use the Scroll Wheel to highlight the desired action and press select Adding Default Notes A Default note may be saved with a trace To enter default notes for trace files scroll to any empty or Free location press the Menu button scroll to the Notes soft key and press Select The first Character of the note box is highlighted Use the Scroll Wheel to select the desired character and press select Continue on until the note is complete To erase the characters and move forward use the blank To quickly return to the beginning of a note press the Menu button and then the Select button on the Notes soft key To exit the Notes box press the Menu button This note will now be the default note for all traces until it is changed or removed To remove notes Press Select on the blank character until all characters have been removed Accessing Flash Drive NOTE Do Not Remove USB Flash Drive While Accessing To access the flash drive while in file management press the Menu Button and scroll to the Extern soft key Press the Select Button to view the files flash drive To return to the internal memory press the Menu button and scroll to the Intern soft key and press the Select button All of the Soft key functions available for the internal
14. Menu mode and scrolling to highlight the View Icon A box will be drawn around the splice loss measurements Use the Scroll wheel to toggle the measurement between Splice Loss LSA Splice Loss or off It is necessary to set these areas in clear backscatter to acquire the most accurate measurements The user may expand decrease or move the LSA areas The areas should not include other events such as reflective or splice events A visualization line is displayed to assist with setting the proper LSA areas The LSA areas are set properly when the LSA visualization lines overlay the back scatter sections of the trace before and after the event To set the LSA areas press the menu button scroll to the SPL icon and press the Select button The focus of the Scroll wheel is now on the LSA areas The position of the area that is being changed is indicated by the Blue arrow floating above the trace It is also indicated as a green section on the cursor To move between the settable positions use the Select button When finished setting the LSA area press the Menu button to return to Menu Mode or press it a second time to return to the trace mode Please see Fig 8 3 for examples of proper LSA settings In Noisy environments the LSA Lines will have an exaggerated movement making the Basic Splice Loss Measurement potentially more accurate Please see the following examples Incorrect LSA Setting Save 000 The LSA area and cursor are set too early The right
15. Select when the desired character is displayed The available Characters are 0 to 9 a to z Ato Z and _ After each character is entered the next highlighted position is a blank space Use the Scroll wheel to display the desired character Selecting the blank space will position the cursor back at the beginning to the file name When the last character of the file name is displayed do not press the Select button Press the Menu button and Save Changes soft key will be highlight At this point the file name may be saved or use the Scroll Wheel to select Discard Changes In order to maintain continuity between the OTDR flash drive and computer keep the file name to 8 characters with a extension The will be assigned by the OTDR file management system and represents the file number Renaming a Trace To rename a trace highlighted the file to be renamed press the Menu button and scroll to the Rename soft key Press the Select button and the first character will be highlight in the file name Refer to Saving a Trace above for file naming procedure When desired changes are made press the Menu button again and select Save Changes or Discard Changes Viewing Saved Trace To view a saved trace from internal memory or USB flash memory use the scroll wheel to highlight the desired trace and press the Select button The OTDR will return to the trace view with the select trace displayed and directly below the trace will be the trace name and the
16. Trace Trace Overlay 10 7 Marking for Mass Copying or Deleting 10 8 Copying Traces 10 9 Deleting Traces 10 40 Adding Default Notes 10 11 A Accessing Flash Drive Loss Test Set Operation 11 0 boss Test Set BI Y Te1d oj1 e 1 IERRERTERPEFBREREEUIERIEREREERSEBELELPFFERFEREFIERESEFEFTEFEEFPERPEGEFERERFOESETUPEUFSETEPFEEFEERELGESETERRT 21 11 1 Entering Loss Test Set Operation Mode 11 2 Key Pad Operation 11 3 LTS Display LTS Measurement Screen LTS File Storage Access Screen LTS Zoom Screen LTS Graph Screen 11 4 Soft Keys Source Power Meter Modulation 11 5 Loss Test Set Icon List Help Delete Quick File Location Tools View Graph Visual Fault Locator Lambda Wavelength Select File Download ks Ife Revision B I fl 7 29 2011 12 0 Loss Test Set Operation M 240000 anna aaa aa ae 25 12 1 Power Meter Measurements Power Measurements Relative Measurements 12 2 LTS Autotest Mode 12 3 LTS Light Source Energizing Light Source Modulating Light Source 12 4 LTS File Selector File selector Screen Quick File Locator 12 5 LTS File Transfer 12 6 LTS Graph Mode 13 0 Maintenance SSEFPEPEPPEPERFFPEEFEEFERFPEPEFPFPELFTFEEPPFFEPFEFFLETEELERPLTEFPTEFFTERTERPELETPLTELELEELFELERFTERFFELTERFELELETTELTEPLLERELLETT 27 13 1 Battery Replacement 13 2 Clock Battery 13 3 Laser Out Port 13 4 Recalibration and Verification 13 5 OTDR Port Adapter Replacement 14 0 Application informatlon iio reina nna nun nan tha panas ea aua au ann naeh n ond aaa o
17. al fiber from one end during installation repair and verification The Advanced OTDR is equipped with a 4 TFT color graphic presentation of fiber loss vs distance with Dual and Quad Laser sources The Advanced OTDR is packaged in a rugged aluminum housing which is further protected with a rubberized boot All controls are accessible via an 7 key weatherproof membrane with a capacitive touch scroll wheel offering simple straightforward functionality The Advanced OTDR is capable of measuring 2 point loss splice loss loss per km and event ORL The singlemode and multimode output ports use high power 850 1300 1310 1490 1550 or 1625 nm pulsed laser sources The backscatter receiver uses a temperature compensated avalanche photodiode for reliable stable performance in fiber links from tens of meters to over 240Km A high speed microprocessor provides the N point averaging function and control for 1 4 second Real Time update rates The Advanced OTDR is available with an Auto Wavelength Switching Power Meter The power meter is calibrated at the 850 1300 1310 1490 1550 and 1625nm with storage of up to 10 000 power meter tests The Advanced OTDR software incorporates a feature to supply loss measurement reports and a real time graph The color TFT LCD display provides a powerful yet simple set of fiber parameters and control indications to view an entire fiber link or zoom in and analyze a splicing point or defect in the fiber The display shows
18. all or just the desired loss information The fiber loss vs distance in its central graph is large with easily manipulated cursors The scales are automatically updated for expansion modes and with position changes of the A and B cursors Individual and dual cursor measurements are displayed as well as important instrument parameters such as Index of Refraction pulse width wavelength range scanning speed and a battery gauge The 7 key panel provides simple straightforward commands to take a scan make measurements or navigate the soft key and Icon menus A new scan is accomplished as easily as pressing the Scan button within 1 4 second fiber trace data is accessible To automatically adjust for an unknown fiber length press the Auto Test button The soft key menus are navigated pressing the menu button and scrolling to the soft key bar located at the top of the display Instrument setup is easily accomplished with the use of the Icon menu located down the right hand side of the display The Advanced OTDR also supports the TTI Video Probe and displays a digital image of the connector end face that can be zoomed and centered on the display The image can also be stored for later review or printed with trace documentation Revision B 3 Ir 7 29 2011 4 0 4 1 4 2 4 3 4 4 Preparation for Use Inspection Before shipment this instrument has been inspected and found to be in perfect working order and free of defects The shipping ca
19. ameter Values LTS Button Zoom Bar Trace A B Grid Battery Cursors Values Indicator Fig 8 2 WARNING Before connecting to a patch cord or fiber under test be certain the fiber has no active optical sources or instruments connected to the other end Skin or eye damage could result from other high power sources e g EDFAs or instrument damage could occur voiding the warranty WARNING Clean connector thoroughly prior to connection to the appropriate port of the OTDR Failure to ensure the connectors used with the OTDR are properly cleaned can result in poor launch conditions at the minimum or damage that requires the unit be returned to the factory for repair Auto Test Range Finder This is a useful feature when the approximate length of the fiber to be tested is unknown To conduct a Range Finder test press the Autotest button The first time Autotest is press upon power up a dialog box will be display to set the function of the button Use the scroll wheel to move between the Range Finder and Construction Mode Press the Select button once the desired function is highlighted To change the function once set in a user session press and hold the Autotest button and the dialogue box will be displayed again For Range Finder mode set the wavelength to be tested To set the wavelength press the Menu button scroll to the Lambda icon and use the Select button to cycle to the desired wavelength Press the Autotest button the unit will set
20. ation LSA Splice loss method gives the use a visual aid in setting splice loss areas This method can be more accurate by affording the ability to see the slope of the splice loss areas however it can also supply a reading with greater error if not used properly The splice loss lines must be set to overlay the backscatter of a trace without over lapping any other events Setting Basic Splice Loss Measurement Areas The splice loss areas around the cursors are adjustable This is accomplished by entering the Menu mode and scrolling to highlight the SPL Icon Press Select and the focus of the scroll wheel changes to the splice loss measurement area before and after the Active cursor It is necessary to set these areas in clear backscatter to acquire the most accurate measurements The measurement areas can not include other events such as reflective or splice events The user may expand or decrease the size of the areas by using the Select button to toggle through the trailing end of the measurement area before the cursor or the leading and trailing ends of the measurement area after the cursor The setting to be adjusted is indicated by an arrow and the size may be changed with the scroll wheel To escape this mode press the Menu button again and the focus will be back on the menu bar Setting Least Squares Approximation LSA Splice Loss Measurement Areas The splice loss areas around the cursors are adjustable This is accomplished by entering the
21. aved to the storage location shown The file will be stored with the same base file name as the last save stored trace If the storage location indicated already contains a file the user will be prompted to either Overwrite the location Save to the Next available location or Cancel the action Scroll to the desired action and press Select The storage location will increment accordingly Note There are sample traces stored on the OTDR at the factory These traces are saved with the base file name of default Quick Recall To quickly recall a trace press Menu scroll to the Recall soft key and press the Select button to display the trace that is saved in the memory location indicated and the next memory location with a trace will be displayed Revision B 7 29 2011 16 leraher z Technologies I i 9 0 9 1 9 2 Event Analysis NOTE When using the event table it is necessary to keep in mind that event analysis provides approximate loss and distance measurements to quickly assist in network evaluation Automatic detection results are not guaranteed and have their limits possibly causing erroneous readings or detection failure User interaction by interfacing with the trace display is recommended for final qualitative and quantitative analysis Enter Event Analysis Mode To open the event analysis table press the Menu button scroll to highlight Show Event soft key and press the Select button Use the Scroll Wheel to move
22. cess Scroll to the desired action and press the Select button Viewing Stored Video Probe Image To view a stored image scroll to the Load soft key and press select to view the image at the indicated location Subsequent presses of the Select button will increment through the occupied storage locations Adjusting Position of Video Probe Image To adjust the position on the display the image must be in 400X mode and the right hand most soft key indicates Adjust Position pressing the Select button will auto center the image if there is sufficient contrast The image may be manually centered by pressing and holding the scroll wheel in the direction of the desired movement Adjusting Contrast of Video Probe Image To adjust the contrast of the image ensure the right hand most soft key is set to Adjust Contrast if it is not and Adjust Position is displayed press the menu button and scroll to Adjust Position and press the Select button to toggle to the Adjust Contrast soft key With Adjust Contrast displayed use the Scroll wheel to increase or decrease the contrast of the image Copy Delete Video Probe Image To copy or delete images Press the Menu button and scroll to the Copy soft key Pressing select on the soft key will display a dialog that offers the option of coping all of the images to the PC via the USB PC port or to a flash drive The dialog will also offer the option to delete all the stored video files or cancel the process Scroll t
23. con view highlighted Revision B 26 Tri 7 29 2011 13 0 13 1 13 2 13 3 13 4 Maintenance Battery Replacement Battery replacement is not recommended however if you must replace the batteries follow these procedures Carefully remove unit from protective boot and remove the two screws from top plate and bottom plate that retain the back cover Carefully remove back cover and remove the two screws that hold the battery covers in place Replace only with 8 AA NiMH 2500mAh batteries If you install NiMH batteries that are dead or less than 1 volt each charge these batteries for one 1 hour before using the Advanced OTDR For maintenance batteries require a monthly periodic recharge WARNING To Prevent Fire or Shock Hazard Do not install other battery types Do not use the battery charger without the batteries installed Do not expose the battery charger to rain or excessive moisture Do not use the battery charger when there are signs of damage to the enclosure or cord Ensure that you are using the correct charger for the local line voltage Do not use any other battery charger than the one provided with this instrument Any other condition will void the warranty For maintenance batteries require a monthly periodic recharge Clock Battery In order to ensure proper Time and Date stamps on test data it is necessary to energize the Advanced OTDR for a minimum of 5 minutes per month If this is not accomplished it will
24. date of delivery This warranty does not apply to expendable parts such as batteries nor to any instrument or component which has been subjected to misuse alteration or fiber connector damage It is the customer s responsibility to understand all the instructions and specifications prior to operating this instrument This warranty does not extend to any loss or damage consequent to the failure of the warranted product Repair If repair is required simply call Terahertz technologies Inc 1 315 736 3642 for return instructions and a RMA number Trouble Shooting Symptom Possible Cause Solution LCD dark Power not on Batteries require recharging Batteries are missing in backwards or need replacement Press ON OFF key Recharge batteries Check polarity replace batteries or contact factory for servicing LCD white Power cycled too quickly Turn off wait 5 seconds turn on Instrument locked Up Unexpected Operational Mode Turn off hold ON OFF button in for 1 second wait 5 seconds then depress On Off again button to turn the unit on Initial Backscatter low Defective cord or dirty connector Fiber Output port requires cleaning Angle polish mated with UPC polish Replace or clean cord Clean and inspect port Examine connector ends Extra or ghost reflections on backscatter Fiber too long for short pulse Fiber over 16Km 53Kft Fiber over 64Km 200Kft Switch to 10
25. display processor with proprietary technology to analyze store and average the fiber trace data in the quickest time This high speed processing engine allows the user to make distance and loss measurements immediately after energizing the instrument With its advanced Event Table Splice Loss Mode and dB Km Mode it also can assist the user in interpreting major events such as bad splices connections or broken ends Minor perturbations along otherwise normal fiber links can also be detected using a simple moving cursor approach in Splice Loss Mode Complex return signals with many major or minor events can be analyzed by the Advanced OTDR then stored away for archiving and later retrieval As with any OTDR to assist in obtaining reliable consistent measurements the user must be aware of the Index of Refraction of their fiber or cable The fiber Index of Refraction IOR is an important parameter that must be entered by the user to maximize the distance measurement accuracy The IOR is proportional to the speed of light in glass compared to the speed in a vacuum and can be calculated by the equation IOR C the speed of light in a vacuum V the speed of light in fiber The IOR number can be obtained by the fiber or cable manufacturer or can be calculated with a known length of cable IOR numbers generally fall around 1 468 SM 1 486 MM These are the default values in the OTDR but can be adjusted from 1 0 to 2 0 To calibrate the IOR for your part
26. e Selector screen is displayed for quick reference and if no key is press for 5 seconds the display returns to the test mode To return to test mode immediately use the Scan button When in Menu mode the Scroll Wheel moves through the Soft Keys and Icons Jerahert fechnologies I5 11 3 LTS Displays LTS Measurement Screen Soft Keys Source PowerMeter Modot LUCI C Ci Icon Bar Current Reading Parameter Key Next Storage OTDR Button Location Stored Reference Of Displayed PM Wavelength Fig 112 LTS File Storage Access Screen Source Power Meter Mod Out Loss Value of Previous Memory Location Loss Value for Current Memory Location Wavelength of Loss Value of Current Loss Next Memory Value Location Data Press A B button to cycle through wavelengths stored Current Memory ina nen Location location Reference for Currently Displayed Test Data Fig 11 3 Revision B 22 7 29 2011 11 3 LTS Displays continued LTS Zoom Screen First Second Wavelength ln Lissa Wavelength Test Data for a m 58 mu u a Test Data for a Memory M Bl Oy t ag Memory Location Ref 3 00dBm Ref 3 00dBm Location Current Memory Location Note Up to 4 LTS Graph Screen Elapsed Time of Fig 11 4 Power Meter wavelengths may be stored for one test Center Cursor Test at the Beginning and End of the 5 a Display with Poeta 00 00 21 Values at Power Levels 1
27. e OTDR or VFL unit while they are energized to do so will expose the user to laser radiation and could result in personal injury or instrument damage WARNING Before connecting to a patch cord or fiber under test be certain the fiber has no active optical sources or instruments connected to the other end Skin or eye damage could result from other high power sources e g EDFAs or instrument damage could occur voiding the warranty Revision B 4 Ir 7 29 2011 5 0 5 1 5 2 FTE 7500 Description Mechanical Instrument Enclosure The Advanced OTDR is packaged in a rugged aluminum housing which is further protected with a rubberized boot Although the front panel is weather resistant care must be taken to avoid liquids and contaminants around the fragile optical electrical connectors and the glass display Use a mild cleaning agent and damp soft cloth to clean the panels and the outside case See the maintenance section to clean the optical connector NEVER open the instrument for cleaning Return to the factory for servicing if necessary Advanced OTDR Packaging The instrument is shipped in a protective cardboard container universal charger with interchangeable mains FC ST and SC interchangeable fiber adapters USB Cable and a CD with Windows compatible software and this manual Save the protective packaging for storage and shipment Physical Bottom Plate Top Plate Revision B 7 29 2011 Power Jack VFL
28. e Select button to cycle through HI for events with loss down to approximately 0 1dB Medium Md with events down to approximately 0 2dB and Low Lo for event down to about 0 5dB Highest sensitivity settings should be used for high signal level low noise long pulse averaged traces Pass Fail Settings Splice ORL and Link are all settable thresholds for Pass Fail purposes To set the thresholds press the Menu button scroll to highlight desired Soft Key press the Select button and use the Scroll Wheel to reach the desired value Press Select button again to lock in the settings If the trace fails any of the three thresholds a red X will be displayed in the P F column and the suspect threshold value will be displayed in red Examples Splice If a splice needs to be less then 1dB set the threshold to 1 0 If 1 0 would be accepted set threshold to 1 01db ORL If an ORL needs to be less then 50dB set the threshold to 50 If 50dB is acceptable set the threshold to 49 Link If the link loss needs to be less then 20dB set the threshold to 20 If 20db link loss is acceptable set the threshold to 21 To return to trace view press the Menu button scroll to the Show Trace soft key and press the Select button Revision B 18 Ir 7 29 2011 10 0 10 1 10 2 10 3 10 4 10 5 File Management Opening File Management To open the File Management System press the Menu button and scroll to highlight the TRC D
29. e between cursors Note To quickly move the active cursor to the next event press the Select button while the unit is in the trace view mode Cursor Lock The cursors may be locked for accurate measurements To lock the cursors press the Menu button scroll to the Tools icon and press the Select button scroll to the A B icon and press Select to toggle the lock cursor mode on and off In the lock cursor mode with the A cursor as the active cursor both A and B cursors move together and with the B cursor as the active cursor the B cursor will move independently in order to set the distance between the two cursors Revision B l4 Ir 7 29 2011 8 6 Loss Measurements Definitions e 2 Point loss method takes the difference in vertical height between where the A and B cursors cross the fiber trace to determine loss e The dB Km dB Kft loss method takes the 2 Point loss in dB and divides by the distance between the cursors in Kilometers Kilo feet For accurate dB Km dB Kft loss measurements the two cursors must be on level backscatter points at least 100m apart NA will show for distances that are too short e Basic Splice Loss method takes the loss around cursor A and B The averaged areas before and after the splice must be level backscatter free from defects or splices Set a cursor at the beginning of an event and set splice loss measurement areas as directed below for accurate splice loss measurements e Least Squares Approxim
30. erahertz echnologies r 1 FTE 7500 OTDR USER S MANUAL Revision C 7 29 2011 Avoid exposure Laser Radiation Emitted from the aperture This product conforms to CDRH standards for laser product Per 21 CFH 1040 10 amp 1040 11 erahertz T echnologies nc Revision B I fis 7 29 2011 Table of Contents SECTION PAGE iEUEeypsXeilldeQc4ee 1 2 0 Loss Test Set Quick Start Banken 2 3 0 Introduction MEPRRRPEREPREERERPEFFPEEELEPEFEPELEFEPEPEFEPEFEEEDEFEEPEREREERPELHEEEFPEPEEEFEFSPEREFFEPEEREFPEEEREEEEELELHPEPELELEPFEFPEDEPREPERES 3 4 0 Preparation for Use 5 exeant a aan anna a a a en an ARRA KR ann aa ana nah a 4 4 1 Inspection 4 2 Identification Configuration 4 3 Power Requirements 4 4 Laser Safety 5 0 OVX Di t i de ite PEPPERPEEFERPEFEREPPERFFEPERFFEFPRLEFFPEEPEEEFEFEEPHEPEFFFEEEEPFEEEEPEFPEEPEEPEFPERFFEPERPEEPEEFPEPEEEEFFEGEPEPEREEFPEFEREFEEN 5 5 1 Mechanical Enclosure Packaging 5 2 Physical Bottom Panel Top Panel Front Panel 5 3 Display 6 0 Features Description Operatlon cas csc cer 24244020 400 Henke nase annsann aaa cR esa aoR Oi E rennen nee 7 6 1 Battery Level Power Indicator 6 2 Help 6 3 USB ports USB Flash Port USB PC Port 6 4 Visual Fault Locator 6 5 Loss Test Set 6 6 Video Probe Port Video Probe port Description operation Video Display Video Image Storage Viewing Stored Video Image Adjusting Position of Video Image Adjustin
31. ergized will be displayed on the power meter end Once the source and power meter have cycled through the wavelengths to be tested press the Select button to store the measurements Note Areference measurement is not used in the Auto Test Mode The Source is modulated and has power level of 3dBm 6dBm 1625 This method of measurement does not take into account the launch condition thus the manual method of testing should be used when highly accurate measurements are required such as when testing the loss of an individual connector The Auto Test annunciator will be displayed during Auto Test loss measurements Two or more loss measurements are best viewed in the Zoom mode where all the selected wavelengths will be display at one time on the display Loss Test Set Light Source Operation Energizing Light Source The lasers are initially in the off state when the LTS is launched Enter the Menu mode and use the Scroll Wheel to highlight the Source soft key Pressing Select will energize the available wavelengths in sequence If used with a compatible test set or a companion FTE 7500 The light source will transmit the wavelength information automatically to the receiving unit which then changes the power meter wavelength setting to correspond to the wavelength of the light source For compatible light sources or test sets please contact your TTI sales associate Revision B 25 Tri 7 29 2011 12 4 12 5 12 6 Modulating Light
32. g Contrast of Video Image Copy Delete Video Probe Image FEUNIDDIHIIIUE 9 7 1 Tool Menu Description 7 2 Accessing the Tool Menu 7 3 Tools Menu Functions Color Scheme Back Light Speaker Power Save Unit of Measure Cursor Lock Baud Rate Screen Shot Smoothing Set Splice Loss Method and Viewable Measurements Wavelength Filter Pass Code Enter Calibration 1 erahertz 1 Ife Revision B I fl 7 29 2011 OTDR Operation menge We 11 8 1 Key Pad Operation 8 2 Trace Display 8 3 Auto Test Range Finder Construction Mode 8 4 Manual Scan Settings Index or Refraction IOR Wavelength Average AVG Pulse Width Range 8 5 Viewing Trace Zoom Function Zoom Bar Cursor Movement Cursor Lock 8 6 Loss Measurement Definitions Setting Basic Splice Loss Areas Setting Least Squares Approximation LSA Splice Loss Measurement Areas 8 7 Unit of Measure 8 8 Quick Save Recall 8 9 VFL HRMIATCDQENUIGMM 17 9 1 Enter Event Analysis Mode 9 2 Event Table 9 3 Sensitivity Settings 9 4 Pass Fail Setting 10 0 Flle Management u n0u 000000000 tected nn aan nn nn aan a na ann anna na a aa ana ana na aan na nn 19 10 1 Entering File Management System 10 2 File Management Display 10 3 Saving a Traces 10 4 Renaming Traces 10 5 Viewing Saved Traces 10 6 Dual
33. ghlight the Trace Smoothing tool press the Select button and a dialog will be displayed allowing the choice of turning off smoothing or setting it to minimum Min or maximum Max Use the Scroll Wheel to select desired level and press Select Smoothing effect is processed after the scan is completed A minimum scan time of 10 seconds Short Scan is required for smoothing to be accomplished If a long scan is interrupted after 10 seconds the smoothing will be accomplished Minimum smoothing is instantaneous with a lesser effect Maximum smoothing requires approximate 1 2 seconds to complete Set Viewable Measurements The Advanced OTDR allows the user to set which loss measurements to be displayed The loss measurements seen are splice loss or Least Squares Approximation LSA splice loss for both cursors dB value between cursors distance between cursors and dB per Km or Kf If any of these measurements are not of importance for a series of test one or more may be turned of for ease of viewing To accomplish this highlight View Icon and press Select A box will be drawn around the splice loss measurements Use the Scroll wheel to cycle the measurement between LSA Splice Basic Splice Loss or off Press Select to move to the next measurement The remainder will just toggle between off and on Continue through the four measurements and the Tools menu will be returned to the screen when select is press on the last measurement Wavelength Filter Wavele
34. ibers up to 240 kilometers DE Set the range 1k or 4k for 2 meter pulse width 4k or 16k for 10 meter pulse width 16k or 64k for the 100 meter pulse width or 64k or 256k for the 1k pulse width To manually start a scan Press BE while the unit is idle To stop a scan Press while the unit is scanning To control the cursors Press Menu to exit the Menu mode and use the Scroll Wheel to move the active cursor To view the Event table Press Menu to enter Menu mode and use the Scroll Wheel to highlight the Show Event soft key and press the o button to change to the event analysis mode Revision B hi 7 29 2011 TI ly 2 0 Loss Test Set Quick Start Guide Press to turn on the OTDR Press Menu to enter the Menu mode Use the Scroll Wheel to highlight the LTS icon on the right side of the display Press o to enter Loss Test Set Mode Press Menu to enter the Menu mode Connect a properly prepared reference cord to the power meter port and the light source port If the unit is a quad wavelength unit ensure the proper port is connected Use the Scroll Wheel to highlight the Source soft key at the top left of the display Press o to energize the first wavelength Once stabilized use the Scroll Wheel to highlight the REF icon on the right side of the display Press o to set the reference for that wavelength If a second wave length is going to be tested scroll back to the Source soft key and press o to cycle to
35. icular fiber take a known distance of fiber or cable best if around 1 kilometer and measure the distance with the Advanced OTDR set for 2m pulse width changing the IOR until the measured distances closely match An error of 001 of the IOR entry 1 468 vs 1 469 equates to an error of approximately 0 7 meters per kilometer of distance measured Revision B 29 Ir 7 29 2011 15 0 Specifications Advanced OTDR Specifications Wavelength 850 1300 1310 1490 1550 1625nm 20nm Dynamic Range 27 26dB MM 32 30dB SM 30 29 29dBTRI Pulse Width 20 10 000 ns Units of Measurement km kf Event Dead zone 2m Attenuation Dead Zone 5m Resolution 25 64m Distance Range 1 64km MM 1 240km SM Typical Real time Refresh Rate 4Hz Group Index of Refraction GIR 1 000 2 000 Linearity 05 dB dB Memory Capacity 1000 Memory Type Internal and Flash Drive Connector Styles FC ST SC Interchangeable Visible Light Source Emitter Type Laser Wavelength 650nm 5nm Laser Safety Class Class IIFDA21 CFR1040 10 amp 1040 11 IEC 825 1 1993 Connector Type 2 5mm Universal Output Power lt 1mW Max Power Meter Power Meter Detector Type InGaAs Calibrated Wavelength 850 1300 1310 1490 1550 1625 Units of Measure dBm dB Resolution 0 01 dB Power Measurement Range 5 dBm to 77 dBm CATV 25 dBm to 57 dBm Power Measurement Uncertainty 0 18 dB u
36. il feature 2POINT 2 Point Loss from the end of the dead zone of the previous event to the beginning of current event DB KM dB per Kilometer if in KM unit of measure and DB KF if in Kilo Feet unit of measure This is the calculated loss per Km or Kf from the end of the dead zone of the previous event to the beginning of the current event TYPE Event Type is the type of event or the ORL measurement If the event is a splice with no reflection splc will be displayed and if the event contains a reflection the ORL value will be displayed This is a settable threshold for the Pass Fail feature E End Of Fiber at the bottom of the table will display location for the suspected end of fiber in the KM column N A in the Splice Column and Link Loss in the 2 POINT column Link Loss may be set as a Pass Fail Threshold The DB KM or KF is the calculated dB loss per Km or Kf for the full link and the TYPE column will display the word Link To the right of the table is a scroll bar which will be active if the amount of events exceeds one page and below the scroll bar is an indication of what page is display per number of pages Also on the Event Table display are the parameter settings for the current trace Sensitivity Settings There are three levels of sensitivity while in the event table The sensitivity is set via the Sense soft key Use the Menu button to access the Soft Keys and use the Scroll Wheel to highlight the Sense key Press th
37. isc Press the Select button to enter the file management system Traces will be labeled from 000 to 999 The file names are limited to 8 characters with a suffix To close the File Management System press the Menu button scroll to highlight the Return soft key and press Select To the right of the file table is a scroll bar which will be active if the amount of traces exceeds one page and below the scroll bar is an indication of what page is display per number of pages Below the page indicator are the parameters for the highlighted trace file File Management Display Soft Keys Return Copy Rename Delete Mark Dual Notes USB o S Memory Source 3 Storage Default 070 Position Prilerauic or s2Defau1s o2 Parameters of Highlighted i Trace ADMIN BLDG TO HIGH SCHOOL CABLE NO 1 Notes Fig 10 1 Saving a Trace There are two methods to save traces The first is the Quick Save method described in section 8 8 The second method is to enter file management With a trace on the display press the Menu button scroll to the File Management icon and press Select Use the Scroll Wheel to move to the desired file storage location This must be an empty position The location with Free is an empty position Press the Select button and a new file will be started There will be a highlighted character position followed by where is the storage position number Use the Scroll Wheel to change the character and press
38. ivision change with each change of the zoom level Zoom Bar The bottom most portion of the screen is a Zoom Bar This represents the entire range of the trace being viewed The green bar within the area represents the amount of the trace that is being viewed whiled the zoom function is being used In zoom level 1 the green bar will fill the zoom bar area meaning the entire range of the trace can be viewed and in Zoom level 2 the green bar will fill only half of the zoom bar area meaning half of the entire range of the trace can be viewed As the zoom levels increase the green zoom bar will decrease in size to indicate the amount of the trace that can be viewed at one time As a cursor is moved with the Scroll Wheel the green zoom bar moves to indicate what portion of the trace is being seen For example if the green bar is to the left of the zoom Area the beginning portion of the trace is being viewed and if the green bar is to the right of the zoom Area the end of the trace is being viewed Cursor movement The current active cursor is indicated next to the soft key at the top of the display There are two methods to change the active cursor The Cursor soft key on the top of the display may be used to change the active cursor Enter the menu mode with the Menu button and scrolling to highlight the Cursor soft key and use the Select button to toggle between active cursors The second method is to use the A B button on the front of the OTDR to toggl
39. l to Ref icon and press the Select button The reference is now stored in non volatile memory and displayed at the bottom right of the display The units of the display will now change to dB Subsequent readings will now be displayed in terms of dB relative to the stored reference value A reference memory location is available for each selected wavelength A reference reading is required to change to dB measurement from dBm measurements Remove the connector from the power meter port and place the fiber under test inline between the reference cord and the power meter port The reading displayed will be the loss of the fiber under test relative to the reference Ensure the unit is not in Menu mode and press the Select button to store the measurement Stored power measurements may be recalled by moving the Scroll Wheel and the File Selector Screen will be displayed If no buttons are press for 5 seconds after entering the File Selector mode the unit will revert to the test mode The Scan button may also be pressed to re enter test mode Loss Test Set AUTO TEST To use the Auto Test feature connect the fiber to be tested to a compatible test set The unit being used as the power meter should be in loss test set mode The unit being used as the source should be set to Autotest If Two Quad OTDRs are being used only the wavelengths to be tested should be selected as sources by entering the Wavelength Lambda selection menu Only the wavelengths that are en
40. m pulse if gt 4Km Switch to 100m pulse if gt 16Km Switch to 1km Mode if gt 64Km USB hookup to PC not functioning properly USB baud rate not set properly or too quick for computer PC drivers not set properly Set port baud rate properly or decrease Baud rate in instrument and certification software Uninstall amp reinstall certification software and drivers USB Flash Driver not functioning properly USB flash drive full USB flash driver cycled too quickly Clean or use a new flash drive Turn power off wait 5 seconds turn back on Revision B 7 29 2011 31 17 0 Version Control Through a program of continuous improvement the upgrade of the features and performance of this instrument are an on going process The instrument firmware version is accessible at turn on The version is displayed on the bottom right hand corner of the display The version changes and approximate release dates are as follows V1 3 06 2009 Original Release V1 4 09 2010 Added Construction Mode Default Notes and Miles as a unit of measure Requires a minimum of version 4 5 6 software TTI 2008 Revision B 32 Ir 7 29 2011
41. mark a file and scrolling up backward higher to lower numbered files will un mark a file Files may be skipped by shutting off marking by pressing the menu button and advancing to the next desired files to be marked press the Menu button again highlighting the Mark soft key and press Select Now use the Scroll wheel or Select button to continue marking files Individual files may be un marked by pressing Select on a marked file will un mark it Press the Menu button again to exit the marking mode and proceed to copy or delete the marked files Copying Traces NOTE Limit flash drives to 4 gigabytes It is suggested that new flash drive sticks be tested prior to use Save traces to the flash drive from the OTDR and test them on the computer with the supplied software to ensure they operate properly NOTE Do Not Remove USB Flash Drive While Accessing Traces may be copied to the USB flash drive or to a PC for use with the certification software The Certification Software is required to copy trace files to a PC The software will prompt this action when it is ready to receive trace files With trace files highlighted or a group of traces marked press the Menu button and scroll to the Copy soft key Press Select and a Select Destination dialog box will be displayed Use the Scroll Wheel to highlight Flash PC or Cancel and press the Select button to carry out the desired action Deleting Traces Traces may be deleted from the internal memory or US
42. ment s from a single memory location use the scroll wheel to display the location to be deleted Note the LTS File Selector will time out after approximately 5 seconds of no activity and return to the Loss Measurement mode Enter the Menu mode scroll to the Red Delete Icon and press the Select button This will delete all the measurements of the displayed storage memory location Note There is not warning or confirmation necessary to delete one memory location To delete the all the memory locations at one time follow the procedure above however do so on and empty location Note A loss measurement of is not empty if there is a wavelength displayed to the right That would be a null measurement An empty location is with no wavelength displayed to the right When the Delete icon is select on the empty location a Confirm dialog with Delete all files will be displayed and the option to Delete or Cancel the action Press the Select button with the desired action highlighted Quick File Locator To quickly move through the loss storage locations enter the Menu mode scroll to the TRC disc icon and press Select The Memory location at the bottom of the display will be highlighted Press the Select button to focus the highlighted area on just the 1000 s position Use the Scroll Wheel to make changes Press the Select button again to move the focus to the 100 s position and repeat this procedure until the desired storage location is f
43. most green LSA indicator line is not over laying the back scatter of the trace properly The scale here is dB per si 4gpllT grid division This event Per Div T should show a loss of 4 Sem approximately 1 04dB Zoom 16x Cursor B Recall 000 Revision B 15 Ir 7 29 2011 8 7 8 8 Incorrect LSA Setting Save 000 Zoom 16 Cursor B Recall 000 1 4dE LTS Fer Di B Fig 84 Proper LSA Setting Cursor B Save 000 Zoom 16x Recall 000 1 4dE LTS Fer Di B 4 3zmk Unit of Measure The LSA area and cursor are set too late The left most green LSA indicator line is not over laying the back scatter of the trace properly The scale here is 1 4 dB per grid division This event should show a loss of approximately 1 04dB The LSA area and cursor are set properly The green LSA indicator line is over laying the back scatter of the trace properly The scale here is 14 dB per grid division The distance unit of measure may be displayed in Kilometer Km Kilo feet Kf or Miles Mi To change the setting enter the menu mode scroll to highlight the Tools icon and press the Select button Scroll to Unit of Measure and use the Select button to cycle between Km Kf and Mi Press the Menu button to return to the trace display Quick Save Recall Quick Save To use quick save press the Menu button scroll to the Save soft key and press the Select button The trace will be s
44. mperative we recommend a recalibration and verification once a year to make certain the instrument is functioning properly and performing to its rated specifications Consult the factory for service Revision B 27 Ie 7 29 2011 13 6 OTDR Adapter Replacement The OTDR is supplied with three easily interchangeable adapters per port ST SC FC To change an adapter remove the two screws that hold the adapter in place pull the adapter straight up from ferrule It is suggested that you clean the exposed ferrule with appropriate cleanser and lint free wipe anytime you replace the ferrule NOTE When replacing the adapter with one that does not have a chained protective cap use the small screw in place of the larger screw that retains the end of the chain to the adapter base raheriz echnologi Revision B 28 IT 7 29 2011 14 0 Application Information Optical Time Domain Reflectometer Measurements The Advanced OTDR is designed to be used as an installation troubleshooting and maintenance tool The Advanced OTDR is a full featured Optical Time Domain Reflectometer but unlike OTDRs that cost thousands of dollars more the Advanced OTDR is very simple to operate The Advanced OTDR measures distance and loss of fiber links up to 240Km by launching an optical pulse down one end of the fiber and analyzing the returned energy in time or distance from reflections The Advanced OTDR uses an advanced high speed embedded controller and
45. n the help page if necessary Press the Menu button again to exit the help feature USB Ports USB Flash Drive Located on the bottom panel is the USB Flash Drive port With the use of a Flash Thumb drive traces may be saved directly to an external memory device Files may also be downloaded to or uploaded from the external memory device Screen Shots are stored directly to the USB flash drive Note Do Not Remove USB Flash Drive While Accessing USB PC Located on the bottom panel is the USB PC port which is used to connect the OTDR to a computer to download stored data for analysis with the supplied Windows compatible software VFL The Visible Fault Locator VFL is a stabilized fiber optic laser source that emits visible red light at 650nm Its intended function is to allow an operator to identify the exact location of a break micro bend or other discontinuity in a fiber optic cable As the radiation is visible light emanating from a break or micro bend enables the user to locate the exact position of a fault even at very short distances that would not be detectable by other means It is also useful for identifying a particular fiber in a cable by exciting the fiber to be located with visible radiation To use the VFL press the Menu button and scroll to highlight the VFL icon press the Select button to cycle the VFL through CW constant wave mode or modulated mode and Off LTS The Advanced OTDR with the LTS option incorporate
46. nder reference conditions 0 25 dB from 0 to 65 dBm 0 35 dB from 0 to 5 dBm and from 65 to 77 dBm Autotest Measurement Rate Four seconds per wavelength Autotest Range 0 to 36 dB Storage Locations 10 000 Connector Interchangeable ST SC FC Light Source Wavelengths 850 1300 1310 1550 1625 20nm Output Power CW 0 dBm 3dBm 1625nm Laser Safety Classification Class safety per FDA CDRH and IEC 825 1 regulations Modulation Modes CW 270 Hz 1000 Hz 2000 Hz General Specifications Battery Charger Universal Battery 8hr Dimensions without rubber boot 7 75 L x 4 5 W x 2 25 H 197mm L x 114mm W x 57mm H Weight 2 lbs Communications ports USB PC and USB Flash Drive Ports Storage Temperature 20 to 60 C Operating Temperature Range 10 to 50 C Accessories Provided Universal Battery Charger w US UK Continental Europe and Australian Plugs Interchangeable FC ST and SC Adapters Windows Telcordia SR4731 Software Rubber Boot Specifications are subject to change without notice Revision B 7 29 2011 30 16 0 16 1 16 2 16 3 Warranty Repair Trouble Shooting Warranty Information This product including all mechanical electrical and optical parts and assemblies are unconditionally warranted to be free of defects in workmanship and material for a period of one 1 year from the
47. nenn aa XR A ERR exu RR aa Ea anna 29 15 0 211411 iler 1 le PPEEPRRFEEPPEEBEFEREPFEPFEPEEPEFPEEBERPEELFEPEFEFEPFEPREEEFERLERELEFPEEPEEFEEUEEEEFEREEEFERELEREFEPEFFPREHFELPEEFERFESEEPEFEEERFER 30 16 0 Warranty Repair and Trouble Shooting eeeeeeeeeeeeeneeeenn nennen nennen nenne nennen nnne nnn nnn 31 16 1 Warranty 16 2 Repair 16 3 Trouble Shooting WAUBTTCIDCUEeIMME 32 Revision B 7 29 2011 iii erahertz echnologies I f 1 0 OTDR Quick Start Guide Press to turn on the OTDR Connect the fiber to the appropriate port Select Multi Mode or Single Mode if OTDR is a quad wavelength unit Press Menu to enter the Menu mode Use the Scroll Wheel to highlight the 2X icon on the right side of the display Press o to cycle to the desired wavelength The OTDR will start a scan at the parameters displayed If approximate fiber length is not known Press the 9 4 button after selecting the wavelength the Auto Test feature will start and set an appropriate pulse width and range automatically If approximate fiber length is known Scroll to AUG To set the averaging time R T for real time Short for a 10 second average time or Long for a 5 minute averaging time Fu To set the Pulse width select 2m for fibers up to 4 kilometers 10m for fiber up to 16 IL kilometers 100m for fibers up to 64 kilometers or 1k for f
48. ngth Filter allows the user to turn on and off wavelengths as desired for OTDR testing To accomplish this highlight Wavelength Filter and press Select Scrolling to a wavelength and pressing Select will toggle a wavelength off and on This is useful if the OTDR is a quad and it is only desired to test either SM or MM or if the unit has three wavelengths and only two need to be used for a particular set of test Pass Code Protection The FTE 7500 may be protected from unauthorized use with a 4 digit pass code Enter the Tool Menu scroll to the Pass code Protection tool and press the Select button Use the Scroll Wheel to set the first digit from 0 to 9 and press Select Continue until all four positions are entered Pressing Select on the last digit will move the focus to Enter or Cancel press Select again set the pass code or use the Scroll Wheel to highlight Cancel and press Select to abandon any changes Contact TTI technical support if your code is lost for a master pass code Enter Calibration This tool is for factory use Revision B 7 29 2011 10 8 0 8 1 OTDR Operation Key Pad D Power button turns the unit On and Off Hold for 1 second Auto Test Select Scan This key will start a scan or stop the current scan AutoTest Fig 8 1 This key operates Range Finder or Construction Mode The Range Finder mode momentarily checks test conditions and starts a scan at the wavelength selected by the u
49. o the desired result and press the Select button to complete the function Note Do Not Remove USB Flash Drive While Accessing Revision B 8 Ie 7 29 2011 u 7 0 7 1 7 2 7 3 Tools Menu Tools Menu Description Although many settings for the FTE 7500 are set as the user operates the unit there are a number of settings that may be made to increase the ease of use for the Advanced OTDR Many of these settings are located in the Tools menu Accessing the Tools Menu To access this menu press the Menu button and use the scroll wheel to highlight the Tools icon Press the Select button and the Tools Menu will be displayed Use the scroll wheel to highlight desired function To exit the Tools Menu press the Menu button Tools Menu Functions Date Time The OTDR applies a time date stamp to the saved files The time and date are set at the factory with a MM DD YY date and 24 hour format clock To change the date and time Highlight the Time Date tool and press the Select button A dialog box with the settings will be displayed Use the scroll wheel to change each segment use the Select button to move between segments and then to Save Redo Cancel Use the scroll wheel to select Save Redo or Cancel then press the Select button again to complete the process Color Scheme To change the color scheme press the Select button while the Color Scheme tool is highlighted and the display will cycle through the six preset color schemes B
50. ound Scrolling when all the digits are highlighted will move thought the positions one at a time as normal Press the Menu button again to exit the Quick File Locator Tools Menu To open the Tool Menu press the Menu button scroll to highlight the Tools icon and press the Select button All parts of the Tool Menu are accessible though there are no operational setting for the LTS located in the Tools Menu View Graph Selecting the View eye icon will change to the Graph Mode For More information on the graph mode see section 12 6 To revert back to the normal power meter mode press select a second time with the View Icon highlighted VFL To activate the VFL press the Menu button and scroll to highlight the VFL icon press the Select button and it will cycle the VFL through CW Modulated and off again The VFL will not operate while light sources are active Lambda Wavelength Selection Highlighting and selecting the A Icon will display the Wavelength Selection menu Use the scroll wheel to highlight the wavelengths to be select for use with the light source and power meter and press the Select button to toggle them off and on The selected wavelengths will be the only wavelengths tested with Autotest and the only ones available when cycling through the light source and power meter soft keys Highlight Save Selection at the bottom of the menu and press the Select button to save the setting and return to the Loss Test Set mode FILE Do
51. reading are the measurements of the previous and next memory locations If there is not activity in 5 seconds the screen will revert back to the Test Mode The Scan button will also revert the unit to the test mode NOTE Pressing the Select button will overwrite the displayed test with whatever is in the temporary memory location Four dashes without a wavelength indicator next to them represents an empty memory location if a wavelength indicator is displayed next to the four dashes there is a null test stored to that location for the displayed wavelength This test could be under or over scale Quick File Locator To quickly move through the loss storage locations enter the Menu mode scroll to the TRC disc icon and press Select The Memory location at the bottom of the display will be highlighted Press the Select button to focus the highlighted area on just the 1000 s position Use the Scroll Wheel to make changes Press the Select button again to move the focus to the 100 s position and repeat this procedure until the desired storage location is found Scrolling when all the digits are highlighted will move thought the positions one at a time as normal Press the Menu button again to exit the Quick File Locator LTS File Transfer Operation To transfer files from the Loss Test Set to the computer start the certification software Connect the OTDR to the computer with the supplied USB cable go to the tools tab of the software and select Baud
52. rightness The Display has a high and low brightness setting To toggle between the two settings highlight Brightness tool and use the Select button to toggle between the two settings Sound Button press and scroll sounds may be turned on or off as desires To toggle sound on and off highlight the Sound tool and use the Select button to switch the sound on and off Power Save The Advanced OTDR incorporates a Power save feature that allows for maximum utilization of the battery life If set to ON the unit keeps track of the keypad activity and if no key presses are detected for a period of approximately 15 minutes the unit will automatically turn itself off storing the current mode settings To turn the feature on or off highlight the Power Save tool and press the Select button Unit of Measure To toggle between Kilometer Km Kilo feet Kf or Mile Mi press Select button while the Unit of Measure tool is highlighted Cursor Lock The OTDR cursors may be locked for accurate measurements To lock the cursors scroll to highlight the Cursor Lock tool and press the Select button to toggle the feature on or off In the lock cursor mode with the A cursor as the active cursor both A and B cursors move together and with the B cursor as the active cursor the B cursor will move independently in order to set the distance between the two cursors Baud Rate It is necessary to set a com port speed for communication with a computer to set the
53. rton should contain the following OTDR with protective boot and 8 AA NiMH batteries installed Universal AC DC charger with interchangeable mains CD with Windows compatible software USB cable Set of interchangeable adapters ST SC and FC Adapters for Hard Copy Manual each OTDR port and for the Power Meter Port Identification Configuration The instrument s Model Part Number Serial Number Date of Manufacture and Configuration are indicated on a label located on the bottom plate of the unit The instrument s history is filed at the factory by part number and serial number 13 6 VDC Power Requirements Fig 4 1 The instrument is equipped with a 100 240V 0 4A input universal battery charger with 13 6V 0 75A center positive output AC DC charger that is supplied with interchangeable mains for US Great Brittan Europe and Australia which recharges the unit s internal NiMH batteries 8 AA 2500mA hours Depending on usage fully charged battery pack will typically enable 8 to 10 hrs of use Typical fully discharged batteries require 6 8 hours of recharging Battery replacement is not recommended however if you must replace the batteries follow these procedures Carefully remove unit from protective boot and remove the two screws from top plate and bottom plate that retain the back cover Carefully remove back cover and remove the two screws that hold the battery covers in place Replace only with 8 AA NiMH 2500mAh batteries If you
54. s an Auto Wavelength Auto Test Loss Test Set Please refer to sections 11 and 12 of this manual for full operating instructions Video Probe Feature Video Probe Port Description Operation The Advanced OTDR Version 1 2 or newer can accommodate the TTI Video Probe Located on the bottom panel is an 8 pin DIN connector labeled Vid Probe The OTDR can view a connector end face center the image and zoom from 200X to 400X To use this feature plug in the video probe press the Menu button and scroll to the Target Icon and press the Select button Connect to fiber adapters connectors and focus For probe operation see the instructions supplied with the Video Probe To zoom to 400X press the Zoom button Pressing the Zoom button again will revert back to 200x Revision B 7 Ie 7 29 2011 Video Probe Display Retum Copy Save 000 Load000 Adjust Position Soft Key Help Icon Note Only the Soft Keys and the Help Icon are accessible on the Video Probe display Fig 6 1 200X 400X Fig 6 2 Video Probe Image Storage The Video image may be stored as a Bitmap by pressing the Menu button scrolling to the Save soft key at the top of the display and pressing the Select button This will attempt to save the image to the location displayed next to the Save soft key If that location is occupied by a stored image a dialog will appear with the choice to overwrite that location save to the next available location or cancel the pro
55. ser but allows the OTDR to determine the pulse width and range parameters This test will flash Auto in the Pulse Width and Range settings until the instrument has determined the best setting and displays the test parameters on the display The Construction Mode is used to automatically save and display dual traces The first time Autotest is press upon power up a dialog box will be display to set the function of the button To change the function once set in a user session press and hold the Autotest button and the dialogue box will be displayed again Menu Toggles between the Trace Mode where the focus of the Scroll Wheel and the Select Button are on the active cursor and the Menu mode where the Scroll Wheel moves through the Soft Key Menu and the Side Icon Bar A B Toggles between A and B as the active cursors Zoom Selects the Zoom level each press increments through the levels of 1x 2x 4x 8x and 16x While in Trace Mode the Select button will move the Active cursor to the next event While in Menu Mode the Select button actuates highlighted item While in Trace Graph Mode the capacitive scroll wheel moves the A and B cursors While in Menu Mode it highlights soft keys and icons and while in Table Mode it highlights files and events Revision B 11 Tr 7 29 2011 FE 8 2 8 4 Trace Display Soft Keys Zoom 1x CursorB Save020 Recall020 ShowEvent le Loss v TT Measurements Sp Icon Bar Parameter Keys Par
56. test To establish the file name press the Menu button and scroll to the File Management icon and press Select Scroll to a Free file location at the beginning of the section with enough empty storage locations to save all the files for a set of tests and press Select Name the file by using the scroll wheel to display the desired letter or number and press Select to move to the next Character Do not press select to enter the last character Once it is displayed press the Menu button and Save Changes soft key will be highlight press Select or use the Scroll Wheel to select Discard Changes and press Select All future files will use the new base file name until it is change The file that was just created may be deleted if desire by following the procedures in section 10 9 Set Default Notes To enter default notes for trace files enter the File management as above and scroll to any empty or Free location Press the Menu button scroll to the Notes soft key and press Select The first Character of the note box is highlighted Use the Scroll Wheel to select the desired character and press select Continue on until the note is complete To erase the characters and move forward use the blank To quickly return to the beginning of a note press the Menu button and then the Select button on the Notes soft key To exit the Notes box press the Menu button This note will now be the default note for all traces until it is changed or removed To remove notes
57. the average time to short starts a scan and flashes Auto in the pulse width and range parameters When Auto stops flashing the unit has set the pulse with and range and completes the scan Construction Mode This is useful when a large number of fibers need to be tested with the same settings at multiple wavelengths To operate in Construction mode set the Autotest button to this mode as described above The Construction Mode tests up to two wavelengths at one time displays the two traces and saves the traces to the next two available storage locations Revision B 12 Ir 7 29 2011 8 4 Follow these procedures to test in Construction mode Set The Wavelengths Set the wavelengths to be tested by pressing the Menu button scrolling to the Tools icon and pressing Select Scroll to the Set Wavelength Filter tool and press Select Grayed out wavelengths are turned off The wavelengths in black text are active To shut off or turn on wavelengths scroll to highlight the wavelength and press the Select Button To complete the process scroll to Save and press select Press Menu again to close the Tools dialogue box Set Test Parameters Check the Average Time Pulse Width and Range to ensure they are set properly Refer to section 8 4 for instructions on setting these parameters Note Real Time is not recommended as an averaging time for Construction mode Set The File Name It is necessary to set the base file name prior to starting the
58. the next desired wavelength and repeat the step to set the reference Press Menu to exit the Menu mode To conduct a Manual Test If using the OTDR as the light source perform reference procedure as above and place fiber under test in line between the reference cord and the power meter port Ensure you are in Menu mode and Scroll to Source soft key Press o to cycle through the wavelengths and choose the wavelength to be tested Press Menu to exit Menu mode Press select to store the measurement to the location indicated in the bottom left of the display Revision B 7 29 2011 To conduct an Auto Test Note Setting a reference in Auto Test mode is not necessary The source is modulated and a Reference of 3dBm 6dBm 1625 is assumed Connect fiber to be tested press the WAE button and the light source will cycle to test each wavelength the power meter will read the signal and hold test in temporary memory until the o button is pressed and the test is stored into the memory location indicated at the bottom left corner of the display Ensure that the unit has cycled through all the desired wavelengths prior to pressing the select button Auto Test will be displayed at the bottom of the display to indicate the Auto Test Mode 3 0 Introduction The Advanced OTDR is the newest in the line of low cost portable Optical Time Domain Reflectometers with the core functions required to measure optic
59. wnload File Download is used to send the save Loss Test to a PC Once the FTE 7500 is connected to a computer with the certification software running enter the menu mode and highlight the File Download icon When directed to do so press the Select button to immediately start a download to the computer via the USB cable Press the Menu button to return to the test mode Revision B 24 Ie 7 29 2011 12 0 12 1 12 2 12 3 Loss Test Set Operation Power Meter Measurements Power Measurements With the FTE 7500 in Loss Test Set Mode Connect the fiber carrying the optical power to be measured to the Power Meter detector utilizing the appropriate adaptor Select the power meter wavelength that matches the wavelength of the light being measured The power reading will now indicate the optical power in units of dBm If the power level is greater than 5 or less than 77 dBm the display will indicate an out of range condition by a series of dashes across the main display For higher power ask a representative about a CATV version power meter To save the power measurement to the storage location indicated below the STORE label press the Select button The memory location will auto increment to the next available memory location Relative Measurements To make a relative power measurement you must first save the reference power level To store a reference level attach reference cord s and energize the light source Enter the Menu mode scrol

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