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EXFO VFL, User Manual

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EXFO VFL User Manual Download Page 28

Using the Optional Power Meters and VFL

24

Power Meter and VFL

Identifying Fiber Faults Visually with the VFL

To activate the VFL and inspect a fiber:
1.

Clean the connectors properly.

2.

Connect the fiber under test to the VFL port.

3.

If necessary, from Mini Toolbox, on the 

Main Menu

, tap 

Power Meter 

and VFL.

4.

Select the 

Instrument View

 tab.

5.

Tap 

ON/Blink/OFF

 to change the VFL state.

6.

Without looking directly into the beam, examine the fiber. If light is 
coming out of the rubber jacket or on the side of the ferrule, the fiber is 
defective.

Summary of Contents for VFL

Page 1: ...User Guide Power Meter and VFL ...

Page 2: ...nor for any infringements of patents or other rights of third parties that may result from its use No license is granted by implication or otherwise under any patent rights of EXFO EXFO s Commerce And Government Entities CAGE code under the North Atlantic Treaty Organization NATO is 0L8C3 The information contained in this publication is subject to change without notice Trademarks EXFO s trademarks...

Page 3: ...Results Files 17 Opening Result Files 18 Clearing Measurements from the Display 19 Adding Information to Your Results 20 Generating Result Reports 21 Identifying Fiber Faults Visually with the VFL 23 3 Maintenance and Troubleshooting 25 Viewing Online Documentation 25 Installing a Unit You Have Purchased Separately 25 Recalibrating the Unit 26 Contacting the Technical Support Group 28 Transportati...

Page 4: ......

Page 5: ...he following conventions WARNING Indicates a potentially hazardous situation which if not avoided could result in death or serious injury Do not proceed unless you understand and meet the required conditions CAUTION Indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury Do not proceed unless you understand and meet the required conditions CAUTION In...

Page 6: ...information pertaining to your unit is specific to the unit you are using Please refer to the corresponding user documentation for more details Certification Information The certification and declaration of conformity for your unit is specific to the unit you are using Please refer to the corresponding user documentation for more details ...

Page 7: ...Meter application but will be available after you tap Add for the first time or after you open a file Below is a description of the Power Meter buttons and functions Selected wavelength To switch between available power meter wavelengths To take a new reference measurement Measured power or insertion loss To switch between dB dBm and W as measurement units To store a reading to the Measurements wi...

Page 8: ...esigned not to require offset nulling under normal operation but you should perform it whenever environmental conditions change significantly or when measuring very low power values To perform an offset nulling 1 Tighten the protective cap on the power meter port 2 From the Instrument View tab tap Offset Nulling The nulling process may take a moment depending on the type of power meter you are usi...

Page 9: ... the Measurements list and in reports When the measurement status is Fail the value is displayed in white over a red background in the Instrument View tab on the Measurements list and in reports Note A power measurement in dBm will be considered as Fail when its value is outside the defined absolute power threshold Note An insertion loss measurement in dB will be considered as Fail when its value ...

Page 10: ...he corrected power value Powermeasured the measured power value CF the correction factor For each favorite wavelength the CF is set to 1 00 at the factory but allowed values range between 0 85 and 1 15 Note Some other products express the CF in dB so the CF would be added to measured power IMPORTANT If you revert to factory settings you will erase all your thresholds and correction factors The pas...

Page 11: ... From the Instrument View tab tap Setup then select the Wavelengths and Thresholds tab 2 Select Apply thresholds Pass Fail status to apply the thresholds and display the relevant information in the Instrument View tab of the main window 3 From the Wavelengths list select the wavelength for which you want to set a threshold or a correction factor ...

Page 12: ... for the selected wavelength To apply these settings to all of the wavelengths in the list tap Apply These Settings to All Wavelengths Correction factor for selected wavelength To revert to default values To make the threshold active for selected wavelength To select the units used for the absolute power value has no effect on the measurement range ...

Page 13: ...u can take the reference value automatically for each wavelength as well To set reference values to use in Reference mode 1 Check your fibers and clean them properly 2 Using the proper adapter and test jumpers connect a light source to your power meter 3 From the Instrument View tab select the wavelength in the list Activate the source at the same wavelength OR If you want to use the auto waveleng...

Page 14: ...ength and auto switching modes of your source if the model allows it Note Not all power meters have auto wavelength and auto switching detection capacities If the auto mode is not available you cannot select it in the Wavlength list However if the power meter has the capacity but the auto mode is still not available a firmware update may be required Please contact EXFO to see how to proceed to upd...

Page 15: ...fibers and clean them properly 3 For insertion loss measurements reference your power meter to a light source see Setting Reference Values on Your Power Meter on page 9 then deactivate the light source 4 If you have used a single reference patchcord disconnect it from the power meter port only then attach a second reference patchcord to the power meter OR If you have used two reference patchcords ...

Page 16: ...splayed values to the Measurements list Note If you tap Add just after switching to another measurement unit the application will prompt you to save any unsaved measurements You must either save these measurements and close the file or discard them see Clearing Measurements from the Display on page 19 before being able to add values expressed in the new measurement unit 8 Repeat the procedure for ...

Page 17: ...ce 4 If you have used a single reference patchcord disconnect it from the power meter port only then attach a second reference patchcord to the power meter OR If you have used two reference patchcords disconnect both of them at the bulkhead 5 Using bulkhead adapters or the system patch panels connect a fiber under test to reference patchcord attached to the light source and power meter IMPORTANT I...

Page 18: ...uto wavelength or auto switching mode Readings with more than one wavelength appear on screen at the same time when the auto switching feature is enabled on the source If the auto wavelength or auto switching mode are not activated for your source and that you try to use the auto feature of the power meter you will be notified clearly in red and no reading is displayed ...

Page 19: ...ap Add just after switching to another measurement unit the application will prompt you to save any unsaved measurements You must either save these measurements and close the file or discard them see Clearing Measurements from the Display on page 19 before being able to add values expressed in the new measurement unit 8 Once your work is complete tap Save IMPORTANT If you specify a name that alrea...

Page 20: ...to remove the selected value from the list or Clear All to remove all measurements from the list To change the fiber name in the case of multiple wavelengths they are all changed at the same time Fiber name To delete the selected row from the table in the case of multiple wavelengths they are all deleted at the same time Wavelength at which power or insertion loss was measured Insertion loss measu...

Page 21: ...ving Results Files Saving Results Files Once you have added measurements to your list you might want to save them onto a file for future consultation To save a measurement file 1 From the main window tap Save As 2 If desired change the name and location then tap Save ...

Page 22: ...be opened The application will keep in memory the last selected folder 3 From the given list of files select the file to open 4 Confirm with OK If you have already performed power measurements but not saved them the application will prompt you to save your work You must either save or discard the unsaved measurements before being able to open a file 5 To view the reopened file go to the Measuremen...

Page 23: ...y does not delete them from the disk if they were saved previously To clear power measurements 1 From the button bar tap Close OR From the Measurements tab tap Clear All If you have not saved the measurements already the application will warn you that you will lose your work if you continue 2 When the application prompts you proceed as follows Select Yes if you want to discard your measurements OR...

Page 24: ...pen the results files with applications such as EXFO s FastReporter installed on a computer all the information that you entered will be available To speed up information entry once you have provided the required data the contents is kept in memory This information will be used for all new results To add information to your results 1 From the button bar tap Setup and then select the Job Informatio...

Page 25: ...rmation related to customer cable and job see Adding Information to Your Results on page 20 Depending on the information you want in your report you can include the statistics the pass fail thresholds or both To select the items to include in your report 1 From the main window tap Setup then select the Report tab 2 Select which items you want to include in the reports 3 Tap OK to confirm your choi...

Page 26: ... and VFL 22 Power Meter and VFL Generating Result Reports To generate a power measurement report 1 From the button bar tap Report 2 If desired change the location for the file 3 Enter a name for your file 4 Tap OK to save your report ...

Page 27: ...o help the person at the other end of the link to identify the fiber under test which could be particularly useful when working with cables containing many fibers From its dedicated port the VFL emits a red signal which becomes visible at the location of a fault on the fiber This signal can be continuous CW or blinking 1 Hz WARNING When the VFL is active the VFL port emits visible laser radiation ...

Page 28: ...ectors properly 2 Connect the fiber under test to the VFL port 3 If necessary from Mini Toolbox on the Main Menu tap Power Meter and VFL 4 Select the Instrument View tab 5 Tap ON Blink OFF to change the VFL state 6 Without looking directly into the beam examine the fiber If light is coming out of the rubber jacket or on the side of the ferrule the fiber is defective ...

Page 29: ...e You will also find a printable PDF version on your installation DVD To access online help At the bottom of the Main Menu tap Installing a Unit You Have Purchased Separately If you have purchased your power meter unit separately please refer to the corresponding unit user documentation for important information on how to install your unit or remove it for maintenance or calibration purposes ...

Page 30: ...ent The validity of specifications depends on operating conditions For example the calibration validity period can be longer or shorter depending on the intensity of use environmental conditions and unit maintenance as well as the specific requirements for your application All of these elements must be taken into consideration when determining the appropriate calibration interval of this particula...

Page 31: ...ording to the following equation Next calibration date Date of first usage if less than six months after the calibration date Recommended calibration period one year To ensure that your unit conforms to the published specifications calibration may be carried out at an EXFO service center or depending on the product at one of EXFO s certified service centers Calibrations at EXFO are performed using...

Page 32: ...ww exfo com If you have comments or suggestions about this user documentation you can send them to customer feedback manual exfo com Transportation Maintain a temperature range within specifications when transporting the unit Transportation damage can occur from improper handling The following steps are recommended to minimize the possibility of damage Pack the unit in its original packing materia...

Page 33: ...ng the warranty period and found to meet all published specifications EXFO will charge standard calibration fees THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED IMPLIED OR STATUTORY INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE IN NO EVENT SHALL EXFO BE LIABLE FOR SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES IMPORTANT The warr...

Page 34: ... nor shall be responsible for any failure in the performance of other items to which the product is connected or the operation of any system of which the product may be a part EXFO shall not be liable for damages resulting from improper usage or unauthorized modification of the product its accompanying accessories and software ...

Page 35: ...s are not covered by this warranty This warranty excludes failure resulting from improper use or installation normal wear and tear accident abuse neglect fire water lightning or other acts of nature causes external to the product or other factors beyond the control of EXFO Certification EXFO certifies that this equipment met its published specifications at the time of shipment from the factory IMP...

Page 36: ...he conditions under which it was observed 5 Return the equipment prepaid to the address given to you by support personnel Be sure to write the RMA number on the shipping slip EXFO will refuse and return any package that does not bear an RMA number Note A test setup fee will apply to any returned unit that after test is found to meet the applicable specifications After repair the equipment will be ...

Page 37: ...55 USA and Canada Tel 1 418 683 5498 Fax 1 418 683 9224 support exfo com EXFO Europe Service Center Winchester House School Lane Chandlers Ford Hampshire S053 4DG ENGLAND Tel 44 2380 246800 Fax 44 2380 246801 support europe exfo com EXFO Telecom Equipment Shenzhen Ltd 3rd Floor Building 10 Yu Sheng Industrial Park Gu Shu Crossing No 467 National Highway 107 Xixiang Bao An District Shenzhen China 5...

Page 38: ......

Page 39: ...e I identifying fiber faults 23 M measurement with power meter 10 O offset nulling 4 online user guide 25 optical detector performance 4 P PDF see online user guide performing null measurement 4 optical power measurement 10 power meter buttons description 3 clearing the display 19 creating a report 20 measurement 10 printing a report 21 recalling results 18 reference values 9 results 16 saving res...

Page 40: ...3 setting power thresholds power meter 5 reference values 9 shipping to EXFO 32 symbols safety 1 T technical support 28 thresholds power 5 setting power meter 5 transportation requirements 28 U user guide see online user guide V VFL 23 W warranty certification 31 exclusions 31 general 29 liability 30 null and void 29 Z zero power reference 4 ...

Page 41: ... Indicates that this toxic or hazardous substance contained in at least one of the homogeneous materials used for this part is above the limit requirement in SJ T11363 2006 嫷䯉年㦘㹡㦘 䓸德咂 年捷ↅ䤓㩟 德㧟㠨 䤓 摞怔 SJ T11363 2006 㪖 屓 䤓棟摞尐㻑ᇭ Part Name 捷ↅ 䱿 Toxic or hazardous Substances and Elements 㦘㹡㦘 䓸德 侯 Lead 杔 Pb Mercury 㻭 Hg Cadmium 椣 Cd Hexavalent Chromium ↆ杻 Cr VI Polybrominated biphenyls 䅃勣啾 PBB Polybromin...

Page 42: ...MARKING REQUIREMENTS 㪖㽷尐㻑 Product ℶ Environmental protection use period years 䘾 㔳 䞷㦮棟 Logo 㪖 This Exfo product 㦻 EXFO ℶ 10 Batterya 䟄㻯 a a If applicable Ⱁ㨫抑䞷ᇭ 5 ...

Page 43: ...1 EXFO ASIA PACIFIC 100 Beach Road 25 01 03 Shaw Tower SINGAPORE 189702 Tel 65 6333 8241 Fax 65 6333 8242 EXFO CHINA Beijing Global Trade Center Tower C Room 1207 36 North Third Ring Road East Dongcheng District Beijing 100013 P R CHINA Tel 86 10 5825 7755 Fax 86 10 5825 7722 EXFO SERVICE ASSURANCE 270 Billerica Road Chelmsford MA 01824 USA Tel 1 978 367 5600 Fax 1 978 367 5700 EXFO FINLAND Elektr...

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