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is registered trademark of OPTOKON, a.s. Other names and trademarks mentioned herein may be the 

trademarks of their respective owners. 

OPTOKON, a.s.,

 

Cerveny Kriz 250, 586 01 Jihlava, Czech Republic 

tel. +420 564 040 111, fax +420 564 040 134, WWW.OPTOKON.COM, [email protected]

 

27/10/2017

 

  

 

 

 

OFT-840 

Loss Test Set 

 

INSTRUCTION MANUAL 

 

 

Revision 1.1

Summary of Contents for OFT-840

Page 1: ...ks mentioned herein may be the trademarks of their respective owners OPTOKON a s Cerveny Kriz 250 586 01 Jihlava Czech Republic tel 420 564 040 111 fax 420 564 040 134 WWW OPTOKON COM INFO OPTOKON CZ 27 10 2017 OFT 840 Loss Test Set INSTRUCTION MANUAL Revision 1 1 ...

Page 2: ...e respective owners The publisher and the author make no claim to these trademarks While every precaution has been taken in the preparation of this document the publisher and the author assume no responsibility for errors or omissions or for damages resulting from the use of information contained in this document or from the use of programs and source code that may accompany it In no event shall t...

Page 3: ...7 8 4 1 Menu 4 Light source menu 17 8 5 ORL Optical Return Loss meter 18 8 5 1 Menu 5 ORL 18 8 6 Menu 6 Internal memory operation 19 8 6 1 SAVE RESULT 20 8 6 2 BROWSE RESULTS 21 8 6 3 UPLOAD MEMORY 21 8 6 4 ERASE MEMORY 22 8 6 5 HOME 22 9 Measuring loss 23 9 1 Basic theory 23 9 2 Method 6 two instruments 25 9 2 1 Setting the reference 25 9 2 2 Measuring Loss 26 9 3 Method 6 one instrument 27 9 3 1...

Page 4: ...for data download to Excel sheet 2 Features Optical Light source Power meter and Return loss tester High capacity two level memory SmartProtocol PC software memory download reporting solution Data Exporter PC software data download to Excel sheet Detection of modulation 270 Hz 1 kHz 2 kHz AWD Auto Wavelength Detection function USB port battery charging data download FW upgrade USB probe mode full ...

Page 5: ...urce Return loss optional adapter SC Master patchcords FC APC LC APC FC APC LC PC FC APC SC APC FC APC SC PC Master measuring adapters LC APC LC PC SC APC SC PC Note 1 FC APC NPC205 standard Power meter interface Other types available on request TE ADP ST ST adapter TE ADP DIN DIN adapter TE ADP SMA SMA adapter TE ADP MU MU adapter TE ADP FC APC FC adaptor TE ADP LC LC adaptor TE ADP SC SC adaptor...

Page 6: ... Compliant with RoHS requirements 2002 95 EG 27 01 2003 Light Source Output power LD 1310 1550 nm 2 dBm typ value Stability 1 hour delta 2 tested after 20 min warm up temperature 23 1 LD 1310 1550 nm 0 05 dB Power Meter Photodetector 1 mm InGaAs Working wavelengths 850 1300 1310 1490 1550 1625 nm can be customized Dynamic range Standard 65 dBm to 10 dBm 57 dBm to 10 dBm 1300 1310 1490 1550 1625 nm...

Page 7: ... ends unless you are certain that no optical power is being emitted Only use magnifying devices with a built in infra red filter to ensure safety During operation testing or maintenance of a fiber optic system never look into an active fiber optic cable Infrared radiation may be present and this can result in permanent eye damage Avoid direct exposure to the beam Do not activate the laser when the...

Page 8: ... long period charge the batteries once every six months The batteries are a consumable Repeated charging and discharging decreases batteries lifetime To extend batteries lifetime it is recommended that batteries be completely drained before re charging battery refresh 7 2 Instrument maintenance During storage and transport keep the instrument in its carry case to protect against crushing vibration...

Page 9: ...3 Insert the moisten pipe cleaner into either end of the adapter and scrub in and out so that the inside surface of the adapter is wiped by the pipe cleaner Repeat this step for the opposite end 4 Insert the dry end of the pipe cleaner into either end of the adapter to remove any residual alcohol For oversized adapters biconic slightly blow the middle of the pipe cleaner fog better surface contact...

Page 10: ...with flange two screws adaptor sleeve adaptor nut For exchanging the adaptor or cleaning the ferrule end face please use the following instructions 1 Description of IN OUT ports PM IN port TE ADP 250 universal adapter LS RL OUT port TE ALS FC APC adapter 2 The procedure of exchange removal of LS RL adaptor is the same as for light source LS 800 OUT port described below ...

Page 11: ...OFT 840 INSTRUCTION MANUAL 11 3 Loosen the two adaptor flange screws 4 Carefully remove the adaptor body be careful of the sleeve 5 Using the optical connector ferule carefully remove the adapter sleeve ...

Page 12: ...or nut Now the adaptor set is fully removed If necessary carefully clean the ferrule end face using alcohol and lint free laboratory wipes 7 Insert the adaptor nut and the sleeve back 8 Attach the appropriate adaptor body and tighten the screws again ...

Page 13: ...n Press to turn the unit off After switching on the type of device serial number and firmware version will be displayed The unit will start up with AUTO OFF feature symbol will be displayed For disable the AUTO OFF feature press and hold the ON OFF key until symbol disappear If activated the unit will turn off after approximately 10 minutes of no activity BL Turns the Display Backlight On and Off ...

Page 14: ...irmware version will appear Reading the display Selecting of 850 1300 1310 1490 1550 1625 nm wavelengths or AWD Auto Wavelength Detection Auto Wavelength Detection is notified by the AWD on the display Note Light source with AWD modulation ON must be connected to Power meter in order to use this feature LOSS Activates the relative power measurement mode unit dB Recalls the last set reference for a...

Page 15: ...ng the display O POW Returns unit into absolute power measurement mode unit dBm Goes to menu 1 REF Sets and stores the new reference for the selected wavelength Note The new reference must be confirmed by the following screen MORE Goes to navigation menu 3 8 12 dB O POW REF MORE 1310nm 9 10dBm L O S S 0 25 dB O POW REF MORE G A I N 1310nm 9 10dBm CONFIRM NO SET NEW REFERENCE selected wavelength me...

Page 16: ...OFT 840 INSTRUCTION MANUAL 16 8 3 Menu 3 Navigation LS Goes to Light source menu 4 ORL Goes to Return loss mode menu 5 MEM Goes to Memory menu 6 Starts working with the internal memory ...

Page 17: ...tion CW Continuous wave 270 Hz 270 Hz Modulation 1 KHz 1 kHz Modulation 2 KHz 2 kHz Modulation AWD Auto Wavelength Detection Modulation PM Returns unit into absolute or relative power measurement mode unit dBm or dB Goes to menu 1 or 2 MOD PM CW LS OFF LD 1550 nm MOD PM CW LD 1310 nm MOD PM 270Hz LD 1310 nm MOD PM AWD active output port battery status indicator ...

Page 18: ... 8 5 1 Menu 5 ORL Master patchcord with APC connectors No reflection Master patchcord with PC connector Reflection from open port fiber air Return loss meter required wavelength settings CAL Return loss meter calibration Service menu MORE Back to Navigation menu 3 ...

Page 19: ...his screen will appear after pressing MORE key from Menu 1 or Menu 2 then MEM UP DOWN OK Use these buttons for selection appropriate submenu CABLE001 FIBER001 FIBER002 FIBER003 FIBER004 FIBER005 FIBER006 FIBERXXX CABLE002 FIBER001 FIBER002 FIBER003 FIBER004 FIBER005 FIBER006 FIBERXXX CABLEXXX FIBER001 FIBER002 FIBER003 FIBER004 FIBER005 FIBER006 FIBERXXX UP DOWN OK SAVE RESULT BROWSE RESULTS UPLOA...

Page 20: ...ed CABLE Accept the suggested FIBER position and save the result by pressing SAVE or change the memory position using FIBER than press SAVE to save the result NOTE If the selected memory position is already occupied the mark will appear on the display By pressing SAVE the new result will OVERWRITE the selected FIBER position and the old result will be discarded CABLE FIBER CABLE 001 FIBER 004 STOR...

Page 21: ... the selected cable then press FIBER 3 Use FIBER to browse through the results 8 6 3 UPLOAD MEMORY 1 By using UP DOWN select UPLOAD MEMORY 2 Press OK All memory content will be sent to the USB port More information is contained in the chapter setting up data transfer CABLE FIBER CABLE 001 STORED 003 FIBER HOME CABLE 001 FIBER 004 1310nm 5 05dB 9 10dBm FIBER HOME CABLE 001 FIBER 005 EMPTY UPLOADING...

Page 22: ...ORY 1 By using UP DOWN select ERASE MEMORY and press OK 2 Press CONFIRM to erase memory or NO for return to main screen 8 6 5 HOME 1 By using UP DOWN select HOME 2 Press OK for return to main screen CONFIRM NO ERASE MEMORY CONFIRM NO ERASE MEMORY ...

Page 23: ... loss may be considered the loss of the connector mated to the reference connector Reversing the cable tests the connector on the other end of the cable Patchcords may also be tested both ends at once using the cable plant test method shown above Power measurement is the basis of optical testing and determines the power budget of the fiber optic link by comparing the power of the transmitter and t...

Page 24: ...ould be cleaned prior to testing see chapter 7 3 The master cord used to set the reference should be the same type as the patchcords cables to be tested MM 50 125 62 5 125 or SM It is very important that the connections are not disturbed after the reference value is established ...

Page 25: ...rst OFT 840 instrument 2 Connect second Master cord to Power meter port of second OFT 840 instrument 3 Use Master adaptor to connect the two fiber ends 4 Power on first OFT 840 instrument light source 5 Push MORE LS 6 By pushing activate appropriate wavelength 7 Power on second OFT 840 instrument power meter 8 By pushing select appropriate wavelength range 9 Activate relative power measurement mod...

Page 26: ...y report the value with the message LOSS or GAIN in dB 5 This value represents a difference between the reference and the performed measurement 6 If the value will be displayed with the LOSS message the trace to be measured has just this loss 7 If the value will be displayed with the GAIN message this means that the trace to be measured has been compared with the reference for this gain 8 Value of...

Page 27: ...irst Master cord to Light source port 2 Connect second Master cord to Power meter port 3 Use Master adaptor to connect the two fiber ends 4 Power on OFT 840 instrument 5 Push MORE LS 6 By pushing activate appropriate wave length light source 7 Push PM and select appropriate wave length range by pushing power meter 8 Activate relative power measurement mode by pushing LOSS 9 Set and store the new r...

Page 28: ...y report the value with the message LOSS or GAIN in dB 5 This value represents a difference between the reference and the performed measurement 6 If the value will be displayed with the LOSS message the trace to be measured has just this loss 7 If the value will be displayed with the GAIN message this means that the trace to be measured has been compared with the reference for this gain 8 Value of...

Page 29: ... 840 instrument 2 Connect second end of Master cord to Power meter port of second OFT 840 instrument 3 Power on first OFT 840 instrument light source 4 Push MORE LS 5 By pushing activate appropriate wave length 6 Power on second OFT 840 instrument power meter 7 By pushing select appropriate wave length range 8 Activate relative power measurement mode by pushing LOSS 9 Set and store the new referen...

Page 30: ...ultaneously report the value with the message LOSS or GAIN in dB 4 This value represents a difference between the reference and the performed measurement 5 If the value will be displayed with the LOSS message the trace to be measured has just this loss 6 If the value will be displayed with the GAIN message this means that the trace to be measured has been compared with the reference for this gain ...

Page 31: ...aster cord to Light source port 2 Connect second end of Master cord to Power meter port 3 Power on OFT 840 instrument 4 Push MORE LS 5 By pushing activate appropriate wave length light source 6 Push PM and select appropriate wave length range by pushing power meter 7 Activate relative power measurement mode by pushing LOSS 8 Set and store the new reference for selected wave length by pushing REF C...

Page 32: ...ultaneously report the value with the message LOSS or GAIN in dB 4 This value represents a difference between the reference and the performed measurement 5 If the value will be displayed with the LOSS message the trace to be measured has just this loss 6 If the value will be displayed with the GAIN message this means that the trace to be measured has been compared with the reference for this gain ...

Page 33: ...Reflectance is primarily a problem with connectors but may also affect mechanical splices which contain an index matching gel to prevent reflectance The method uses a source and power meter with some accessories or an instrument called an optical CW reflectometer OCWR This method is typically used for terminated patch cords when the loss and reflectance values are required specifications The metho...

Page 34: ... and turn the OFT 840 on The PC will prompt you to install the drivers for new hardware Use the drivers provided by OPTOKON These drivers will create a virtual serial com port 2 Start the Hyper Terminal Start Programs Accessories Communication Hyper Terminal 3 Enter the name of a connection then click on OK OFT 840 ...

Page 35: ...OFT 840 INSTRUCTION MANUAL 35 4 Choose the virtual serial port the OFT 840 is connected to then click on OK 5 Set Bits per second to 19200 then click on OK OFT 820 ...

Page 36: ...menu in OFT 840 and push MORE MEM select UPLOAD MEMORY OK The stored data will be transferred to the PC in this format The data from this window can be easily copied to any other application cable folder fiber position wavelength stored values ...

Page 37: ...0 001 0 3 6 7 20 0 01 0 4 8 8 10 0 10 0 5 10 9 9 0 13 0 6 12 9 8 0 16 0 7 14 9 7 0 20 0 8 16 8 6 0 25 0 9 18 7 5 0 32 1 20 6 4 0 40 2 36 9 3 0 50 3 49 9 2 0 63 4 60 2 1 0 79 5 68 4 0 1 00 6 74 9 1 1 26 7 80 0 3 2 00 8 84 2 5 3 16 9 87 7 7 5 01 10 90 0 10 10 00 12 93 7 12 15 84 15 96 8 15 31 62 20 99 0 17 50 12 30 99 9 20 100 00 ...

Page 38: ...OFT 840 INSTRUCTION MANUAL 38 13Notes ...

Page 39: ...14Calibration service center OPTOKON a s Červený Kříž 250 586 01 Jihlava Czech Republic tel 420 564 040 111 fax 420 564 040 134 optokon optokon com www optokon com ...

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