Tektronix Door 160 User's Manual
Contents
1. 1 1 4 The TOP Series Visual Fault Finders 1 2 Scope of This Manual eee ee eee 1 3 Unpacking and Inspection eese 1 4 Accessories and Adapters eese Section 2 Basic Operation 2 d Introduction Vs ae ue quete SUID S a Y SS 2 2 Battery Installation or Replacement 2 3 Interchanging the Connector Adapters 11 2 4 Cleaning the Connector Interfaces 12 2 5 Cleaning the Connector Adapters 13 2 6 Cleaning Connectors panini medii 14 Section 3 Instrument Operation 3 1 TOP130 Optical Dual LED Source 15 3 2 TOP140 150 Optical Laser Sources 17 3 3 TOP160 Optical Laser Source 18 3 4 TOP200 Optical Power Meter 19 3 5 TOP300 Visual Fault Finder 4 22 Section 4 Applications 4 1 Connector Insertion Loss 24 4 2 Link Loss Testing 446 S606 I teesis 26 4 3 Visually Locating a Break within a Fiber 29 4 4 Visually Locating a Defective Connector 30 4 5 Visually Identifying Breaks within Ferrules and Polishing Problems losses 31 4 6 Dual Wavelength SM Testing with TOP160 TOP200 as ur c gai RC rece ct 32 Section 5 Factory Service and Calibration 5 4 Introduction aea cs ee M ee PRO 34 5 2 Obtaining Service hr RIA 34 5 3 Recommended Calibration interval 34 1 1 2 1 2 2 2 3 2 5 2 6 2 7 3 1 3 22. D it is advisable to measure losses in both directions Reverse the source and power meter connections see Figure 4 6 Calculate the reverse loss using the formula below REVERSE LOSS dB P5 P4 Power Meter Fig 4 6 Reverse Link Connection E Report both forward and reverse loss values 28 29 4 3 Visually Locating a Break Within a Fiber The TOP300 injects visible light into a fiber The visible light escapes the fiber wherever the continuity is interrupted A break will always generate a highly visible output If the fiber is only under stress a smaller effect may be produced In general however if you see any light escaping the fiber you can be sure that there is a problem which must be repaired TOP300 Fig 4 7 Locating a Fiber Break The light in jacketed fiber is heavily attenuated sometimes it is necessary to darken the room to see better where the light is escaping the fiber CAUTION TO AVOID ANY POTENTIAL INJURY TO THE EYE DO NOT LOOK CLOSER THAN 30CM FROM THE OUTPUT PORT 4 4 Visually Locating a Defective Connector Fiber breakage often occurs close to a connector or within a connector Verifying such a fault with confidence is not always easy Here are some helpful hints on how such problems can be pinpointed exactly if you inject light into a fiber but can see neither the light coming out at the far end nor is there any visible light loss along the fiber then a break at exact
3. User Manual Tektronix TOP 130 140 150 160 200 300 Fiber Optic Instruments C 9372 01 070 User Manual Tektronix TOP 130 140 150 160 200 300 Fiber Optic Instruments 070 9372 01 First Edition July 1996 Instrument Serial Numbers Each instrument manufactured by Tektronix has a serial number on a panel insert or tag or stamped on the chassis The first letter in the serial number designates the country of manufacture The last five digits of the serial number are assigned sequentially and are unique to each instrument Those manufactured in the United States have six unique digits The country of manufacture is identified as follows B010000 Tektronix Inc Beaverton Oregon USA E200000 Tektronix United Kingdom Ltd London J300000 Sony Tektronix Japan H700000 Tektronix Holland NV Heerenveen The Netherlands Tektronix Inc PO Box 500 Beaverton OR 97077 Printed in U S A Copyright Tektronix Inc 1996 All rights reserved Tektronix products are covered by U S and foreign patents issued and pending The following are registered trademarks TEKTRONIX TEK TEKPROBE and SCOPE MOBILE FCC Class A Device This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a commercial environment This
4. FC PC FC APC SC PC SC APC SMA 905 SMA 905 Figure 1 1 Connector Identification Chart Section 2 Basic Operation 2 1 introduction This section describes how to use the Tektronix TOP series optical power meters and sources We suggest that you take the time to read this material carefully so that you can take full advantage of the wide variety of applications for these instruments If you are required to service and maintain these instruments then please contact your Tektronix representative for technical assistance 2 2 Battery Installation or Replacement These instruments are designed to operate on two common 1 5V AA alkaline batteries The units come with two batteries for installation by the customer With long life alkaline batteries your instrument will typically operate for more than 100 hours for the TOP200 optical power meter and more than 80 hours for the TOP140 150 optical laser sources The typical operating life for carbon zinc batteries would be reduced by 30 40 For the optical power meters LOW BATTERY status is indicated by a B annunciator appearing in the upper left hand region of the LCD When the B first appears the operator has at least five hours before the batteries must be replaced For the sources LOW BATTERY status is indicated when the front panel LED indicator is blinking You may continue to operate the source until the front panel LED shuts off However the optical output
5. Like the TOP140 150 160 optical laser sources the TOP300 also features the precision universal connector interface UCI which interfaces to all standard fiber optic connectors via a complete line of simple screw on screw off UCI adapters 1 2 Scope of this Manual Please carefully read this instruction manual before using these instruments Be especially careful to observe the warnings and cautions throughout this manual If any operating instructions are not clear contact Tektronix Inc This instruction manual contains the necessary information for operation and maintenance of the Tektronix TOP series fiber optic instruments as well as information for troubleshooting and obtaining service if necessary This information is divided into the following sections Section 1 provides general information about this manual and about the power meters and sources It contains general product descriptions and gives the options that are available Section 2 explains the basic operating procedures common to the TOP series instruments including battery replacement changing connector adapters and cleaning the optical interface Section 3 describes how to operate the various TOP series fiber optic instruments Section 4 describes various applications of the TOP series fiber optic instruments including component insertion loss link loss and visual fault finding Section 5 provides information about obtaining service Tektronix fiber
6. an accurate power meter The Telecommunications Industries Association TIA Washington D C has developed a comprehensive library of industry approved fiber optic test procedures FOTPs and system level optical fiber systems test procedures OFSTPs For a detailed description of various loss measurement methods consult FOTP 34 INTERCONNECTION DEVICE INSERTION LOSS TEST FOTP 171 ATTENUATION BY SUBSTITUTION MEASUREMENT FOR SHORT LENGTH MULTIMODE GRADED INDEX AND SINGLE MODE OPTICAL FIBER ASSEMBLIES OFSTP 2 OPTICAL POWER LOSS MEASUREMENTS OF INSTALLED MULTIMODE FIBER CABLE PLANT OFSTP 7 OPTICAL POWER LOSS MEASUREMENTS OF INSTALLED SINGLE MODE FIBER CABLE PLANT These and other FOTPs OFSTPs can be ordered through Global Engineering Documents Englewood CO USA Tet 303 792 2181 Fax 303 397 7935 credit card orders accepted The Tektronix TOP series fiber optic sources serve as precision light sources to provide accurate loss measurements for any fiber optic installation Except for very special applications it is recommended the proper source be selected as follows Table 4 1 Source Selection Guide pese Type Size Source Model 635nm SM or MM TOP300 Troubleshooting 62 5 125 penn eesrias 1310nm TOP140 1310 1550 TOP160 1550nm Singlemode or TOP150 Dispersion Shifted 4 1 Connector insertion Loss To measure the insertion loss of a connector re FOTP 34 Method A follow the procedure
7. equipment generated uses and can radiate radio frequencyenergy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense Changes or modification not expressly approved by Tektronix can affect emission compliance and could void the user s authority to operate this equipment Tektronix Inc PO Box 1197 625 S E Salmon Street Redmond Oregon 97756 0227 U S A Phone 1 800 835 9433 toll free USA Canada Phone 503 627 7111 toll call worldwide FAX 503 690 3926 worldwide Tektronix EC Declaration of Conformity Tektronix Holland N V Marktweg 8444 AB Heerenveen The Netherlands declare under the sole responsibility that the Tektronix TOP130 TOP140 TOP150 TOP160 Optical Light Sources TOP200 Optical Power Meter TOP300 Visual Fault Finder meet the intent of Directive 89 336 EEC for Electromagnetic Compatibility Compliance was demonstrated to the following specifications as listed in the official Journal of the European Communities EN 50081 1 Emissions EN 55022 Radiated Class B EN 55022 Conducted Class B EN 60555 2 Power Harmonics EN 50082 1 Immunity IEC 801 2 Electrostatic Discharge IEC 801 3 RF Radiated IEC 801 4 Fast Trans
8. described below A Connect the TOP source to the TOP power meter using a suitable reference cable with a length of about 6 10 feet 2 3 meters per Figure 4 1 Qut PIU it E tees LES L 1 i nth iu i a Jii neti ey ey Ezy j umat Lll Tm TOT Source Power Meter Fig 4 1 Initial Setup B Switch the source to continuous CW light output and the power meter to the appropriate wavelength using button and dBm units Note the dBm output of the reference cable should be within acceptable limits 24 C To store this reference level press the dBm dB button for about 2 3 seconds until the little r annunciator appears on the LCD display and the display reads 0 00dB See Figure 4 2 Push dBnvdB button to Set 0 dB Reference Source Fig 4 2 Establishing a Heference Measurement D Disconnect the cable end from the power meter and insert the cable to be tested using a mating adapter The power meter now reads the connector cable loss in dB The example of Figure 4 3 displays a connector loss of 0 15dB Source Power Meter Fig 4 3 Measuring the Insertion Loss of a Connector Cable 25 4 2 Link Loss Testing Now assume that we want to measure the attenuation of a SM or MM link which is so long that we cannot access both ends from a single location To measure the loss of a fiber optic link re OFSTP 2 or OFSTP 7 Method A follow the procedure described bel
9. optic instruments are carefully assembled and inspected mechanically electrically and optically before shipment Your instrument was shipped with an adapter two AA batteries and this instruction manual Upon receiving this instrument check for any obvious signs of physical damage that might have occurred during shipment Report any such damage to the shipping agent immediately Retain the original packing materials in case reshipment becomes necessary 1 3 Unpacking and Inspection Unpacking The TOP series instruments are shipped to you with the following equipment The TOP series instruments are shipped to you with the following equipment The connector adapter type is as identified in Table 1 1 TOP130 and 2x SOC Adapters TOP140 and 1x UCI Adapter TOP150 and 1x UCI Adapter TOP160 and 1x UCI Adapter TOP200 and 1x SOC Adapter TOP300 and 1x UCI Adapter Operator manual 070 9372 01 AA alkaline battery Qty 2 If the contents of the shipping container are incomplete contact your Tektronix representative If shipping resulted in damage to the TOP instrument notify the carrier and your Tektronix representative initial Inspection This Tektronix TOP instrument was inspected mechanically electrically and optically before shipment If it fails to perform satisfactorily contact your Tektronix representative immediately or in the U S and Canada telephone toll free 1 800 TEK WIDE 835 9433 if the TOP instrument must be
10. returned to Tektronix for service 1 Use the original carton or equivalent with dimensions at least six inches greater than the unit to allow for cushioning 2 Cover the instrument with polyethylene sheeting to protect its finish 3 Cushion the instrument equally on all sides with packing material Seal the carton with shipping tape or an industrial stapler 4 Ship insured to Tektronix Inc CNA Division Atin Customer Service 625 SE Salmon Ave BLDG X7 Redmond OR 97756 Include name of your company person to contact telephone number and description of problem 1 4 Accessories and Adapters The following adapters and accessories are available Please contact your Tektronix representative if you cannot find the desired adapter or connector that matches it SOC Series Adapters Adapters Used on Used on TOP130 LED Source TOP140 Laser Source TOP200 Power Meter TOP150 Laser Source TOP160 Laser Source TOP300 Visual Fault Finder 119 5168 00 119 4515 00 D4 PC 119 5167 00 119 4514 00 DIN PC Connector UCI Series Types 119 4556 00 119 4558 00 pwPc _1195166 00 119 4546 00 Ezoo Po 119516500 _119 5164 00 lEBOAPC 119 5165 00 119451600 119 4518 00 Iscapc Hi951500 119 4557 00 119451700 ST PC 119 4513 00 Table 1 1 Connector Adapter Selection Chart Connector Types Biconic DIAMOND 2 5 DIAMOND 3 5
11. to all popular industry standard fiber optic connectors TO CLEAN INTERFACE Remove the adapter as described in Section 2 3 Clean the exposed ferrule tip UCI or optical window SOC with a dry lintfree cloth TEXWIPE TX404 or equivalent per Figure 2 5 In severe cases you will need to use reagent grade isopropyl alcohol IPA Finally make sure that all residual alcohol is removed by wiping again with a fresh wipe Fig 2 5 Cleaning the Connector Interface 12 13 2 5 Cleaning the Connector Adapters Both the UCI and SOC adapters should be inspected and cleaned on a routine basis TO CLEAN ADAPTER Using a clean lintless swab RIFOCS 946 or equivalent insert a swab into the thru hole of the adapter Insert swab end completely then remove and discard Do not reuse swab NM CLETOP Stick type did C cleaner Fig 2 6 Cleaning of the Adapter Clean exterior surfaces using a lintfree cloth such as TEXWIPE wetted with reagent grade isopropyl alcohol Finally make sure that all residual alcohol is removed by wip ing again with a fresh wipe 2 6 Cieaning Connectors To achieve the desired performance from conneciors it is important that they be cleaned each and every time before connecting or reconnecting to anything i e transmission equipment test equipment patch panels other connectors etc PM The conventional method of cleaning optical plug ferrule endfaces is worker skill dep
12. to operate from two AA alkaline batteries Note proper orientation of batteries before turning the instrument on Battery Power Do not expose battery to fire or intense heat nor open or mutilate the battery Avoid contact with electrolyte which is corrosive and may damage eyes skin and clothing Check with local codes for disposal instructions External Power Any external power adapter is not recommended for the TOP series Laser Radiation When making measurements on optical systems avoid eye exposure to any open ended fibers optical connectors optical interfaces or other sources because they may be connected to laser transmitters Do not look into the optical port when a source is turned on Keep the dust cap on the optical port when not in use Avoid looking at the free end of a test fiber the end not connected to the instrument If possible direct the free end toward a non reflective surface Do Not Operate in Explosive Atmospheres Do not operate the TOP series in an explosive atmosphere unless it has been specifically certified for such operation Do Not Remove Covers or Panels Do not remove the instrument covers or panels nor operate without covers and panels in place Repair Refer all repair problems to qualified service personnel Specifications Optical Dual LED Sources Model Number TOP130 Center Wavelength nominal Wavelength Range 830 870nm nominal Spectral Width AMS z amp am
13. 0 respectively Expected reading on TOP200 is 6 25dBm to 7 75dBm Test Jumper 1 Push dB dBm button to set OdB reference level for each wavelength A Source Power Meter Fig 4 11 Dual Wavelength Initial Setup 32 B Press the dBm dB button of the TOP200 until the small r annunciator appears and the display reads 0 00dB C Set both TOP160 and TOP200 to 1550nm Expected reading on TOP160 is 6 25dBm to 7 75dBm D Press the dBm dB button of the TOP200 until the small annunciator appears and the display reads 0 00dB E Connect both TOP160 and TOP200 to opposite ends of the link under test Use suitable REFERENCE cable for connecting either instrument to the patch panel F With the TOP160 set to 1310nm and the TOP200 set to 1300nm record the dB reading from TOP200 OPM This is the link loss at 1310nm G With both the TOP160 and TOP200 set to 1550nm record the dB reading from the TOP200 OPM This is the link loss at 1550nm Go to the next fiber and repeat from Step A Test Jumper 2 1 With the TOP160 set to 1310nm and the TOP200 set to 1300nm record the dB reading from TOP200 OPM This is the link loss at 1310nm 2 Select 1500mn on both TOP160 TOP200 and Source note dB loss reading Power Meter Fig 4 12 Measuring the Insertion Loss of a Connecior Cable section 5 Factory Service and Calibration 5 1 Introduction This section contains information regarding obtaining factory s
14. 3 3 3 4 3 5 3 7 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 4 9 4 10 4 11 4 12 1 1 4 1 4 2 List of Figures Connector Identification Chart 0 8 Removing the Protective Cover 10 Opening the Battery Compartment 10 Interchanging the UCI Connector Adapter 11 Interchanging the SOC Connector Adapter 11 Cleaning the Connector Interfaces 12 Cleaning the Connector Adapters 13 Cleaning Connectors sous tek RP ER 14 TOP130 Controls and Indicators 15 Changing the Modulation Frequency of the TOP130 140 150 Sources 16 TOP140 150 Controls and Indicators 17 TOP160 Controls and Indicators 18 TOP200 Controls and Indicators 20 Location of the CAL OP Switch of the TOP200 Power Meter 20 00 02 eee 21 TOP300 Controls and Indicators 22 Initial Set p 4 9 eis du n e x io at 24 Establishing a Reference Measurement 25 Measuring the Insertion Loss of Connector Cable oa eek ena aye V CR Ree 25 Checking the Local Test Set s 26 Forward Link Connection llle 27 Reverse Link Connection 0 28 Locating a Fiber Break 05 29 Locating a Defective Connector 30 Locating Fiber Break in a Ferrule 31 Identifying a Bad Polish luu 31 Dual Wavelength Initial Setup 0 0 32 Meas
15. 72 x 142 x 36mm 2 8 x 5 6 x 1 4in Specifications Visual Fault Finder Model Number TOP 300 Central Wavelength Mean FWHM Nominal 635nm Range 615nm 660nm Spectral Width RMS Stability 1 hour max deviation 10 hours max deviation Power Output 5dBm Class ll SMF 28 Fiber Connector Interface Universal Connector Interface See Table 1 1 for available UCI adapters Environment 0 95 RH non condensing Environment 0 95 RH non condensing gt 20 hours battery life Size WxHxD LASER LIGHT DO NOT STARE INTO BEAM 1 mW max at 530 676 nm CLASS IT LASER PRODUCT WARNING The TOP300 is a device conforming to the requirements of CDRH Class Il CFR 1040 Subchapter J While there is no potential for eye damage due to unaided direct exposure users should always avoid looking directly into the output port The use of optical viewing instruments such as microscopes magnifiers etc should always be avoided The use of these devices around active fibers can focus a highly intense beam on to the retina which can result in permanent eye damage ix Section 1 General Information Overview 1 1 1 The TOP Optical LED Source The Tektronix TOP130 Dual Wavelength 850 1300nm Optical LED Source is a small rugged handheld instrument for use in installing and testing attenuation of both singlemode and multimode fiber optic links including te
16. amic ferrule Va COMI ELS Bie eS Cracked Fiber and or Bad Polish Fig 4 10 Identifying a Bad Polish 4 6 Dual Wavelength Singlemode Loss Measurements with the TOP160 TOP200 The TOP160 Dual Laser Source is used to measure the attenuation of a singlemode fiber link Dual wavelength testing at both 1310nm and 1550nm may be required under the following conditions 1 Telephony systems now operating in the 1310nm window are likely to be upgraded for operation at 1550nm in the future Consequently it is important to validate the newly installed link at both 1310nm and 1550nm now to be sure that all specifications are met and can be met in the future Unless measured and verified at time of installation unexpected fiber attenuation and excess bend losses might render the link useless for later commissioning at 1550nm While fiber attenuation decreases at longer wavelengths microbend and macrobend losses increase at higher wavelengths 1550nm vs 1310nm 2 The telecommunication system is operating in both the 1310nm and 1550nm windows Therefore dual wavelength acceptance testing is required to be performed at this time The following test procedure complies with TIA EIA 526 7 OFSTP 7 Method A Attenuation of Installed Singlemode Fiber Link A Connect the TOP160 Dual Source to the TOP200 Optical Power Meter via a suitable REFERENCE cable minimum 3m long Turn on both instruments and set wavelength to 1310nm and 130
17. apters Beam Cap Output Connector Low Battery indicator OFF CW MOD Switch Fig 3 3 TOP140 150 Controls and Indicators 3 3 TOP160 Dual Optical Laser Source ON OFF WAVELENGTH SELECT MOD 1310 1550 INDICATOR Beam Cap Output Connector ON OFF Button This button turns the unit on or off When the unit is first turned on the1310nm laser is automatically selected in CW mode This button allows the user to toggle between the 1310nm and 1550nm lasers Only one source can be on at a time This button toggles between CW Continuous Wave or DC MOD indicator is off and MODulated modes source output is modulated MOD indicator is on When the MODulation mode has been selected the MODulation frequency is determined by the setting of the Modulation Frequency Switch 270 1000 2000Hz accessible via the battery compartment See Figure 3 2 When lit the corresponding LED indicates which laser is on When either LED blinks continuously this indicates a low battery condition It is time to replace the internal batteries Low Battery indicator 1310 1550nm Indicator CW or MOD Select Wavelength Select Fig 3 4 TOP150 Controls and Indicators 18 19 3 3 TOP200 Optical Power Meter ON OFF This switch turns the unit on or off dBm dB This button controls these modes Selects dBm units for absolute power measurements Toggles between absolute dBm and relative dB rea
18. battery compartment is used when recalibrating the meter In normal use this should always be set to the OP position Consult Service Manual for detailed information about calibrating the TOP200 INPUT This is the optical input connector The CONNECTOR TOP200 is equipped with the snap on connector SOC interface See Table 1 1 for a list of available SOC adapters Beam Cap input Connector LCD Readout Wavelength Select Switch dBm dB Switch On Off Switch Fig 3 4 TOP200 Controls and Indicators 20 CAUTION CONSULT SERVICE MANUAL BEFORE USING THIS FUNCTION FOR NORMAL OPERATION THIS SWITCH SHOULD ALWAYS BE SET TO THE OP POSITION Calibration Switch Fig 3 5 Location of the CAL OP Switch of the TOP200 Power Meter Switch is located behind tamper label 21 3 5 TOP300 Visual Fault Finder OFF CW MOD This switch turns the unit off or selects continuous CW or modulated MOD blink 1Hz mode ON and This LED indicator is on when the unit is LOW turned on It will blink to indicate a low BATTERY battery condition INDICATOR OUTPUT This is the optical output connector The CONNECTOR TOP300 is equipped with the universal connector interface UCI See Table 1 1 for list of available UCI adapters Low Battery indicator Oft CW MOD Switch Fig 3 8 TOP300 Controls and Indicators 22 23 Section 4 Applications Fiber optic insertion loss tests require a stable source and
19. douts without changing internal reference level when momentarily pressed Selects new OdB reference level when this button is held down for 2 3 seconds and the little r annunciator appears in the lower righthand corner of the LCD display NOTE The TOP200 features multiwavelength reference storage This means that the OdB reference settings for both TOP130 Dual 850 1300nm LED Source and TOP160 Dual 1310 1550nm Laser Source can be stored in non volatile memory See Section 4 3 for specific application information for using the TOP160 and TOP200 together as an efficient dual wavelength singlemode test system Powering on off changing wavelengths or toggling between dBm dB modes does not alter these stored values until a new OdB reference value for a selected wavelength is established by deliberately holding down the dBm dB button as described above WAVELENGTH This button controls two modes SELECT Selects proper wavelength and internal calibration factor corresponding to optical input 850 1300 or 1550nm When held down at the desired wavelength pushing the dBm dB button sets the current wavelength as the new power on default wavelength stored in non volatile memory NOTE The TOP200 is shipped with the default power on wavelength set to 1300nm This default power on wavelength can be changed to any other available wavelength as described above CAL OP This switch see Figure 3 5 located inside the
20. endent and generally requires use of expensive and difficult to transport consumables such as alcohol solvents wiping tissue and or freon gas However the CLETOP All In One Connector Cleaner RIFOCS 945 or equivalent see Figure 2 7 replaces the conventional cleaning method and its easy to use operation produces consistent results in one self contained unit In addition mating adapters a k a butt joint adapters or alignment sleeves can be easily cleaned using the CLETOP stick type cleaner previously described in Figure 2 6 Wipe connector across cleaning track as shown CLETOP All In One Connector Cleaner Fig 2 7 Cleaning a Connector 14 15 Section 3 Instrument Operation 3 1 TOP130 Optical Dual LED Source WAVELENGTH This switch determines which LED is SELECT 850nm INDICATOR 1300nm INDICATOR OFF CW MOD ON and LOW BATTERY INDICATOR FREQUENCY SELECT OUTPUT CONNECTOR On and Low Battery indicator active This indicator is on when the 850nm LED is on This indicator is on when the 1300nm J LED is on This switch turns the unit off or selects continuous CW or modulated MOD blink 1Hz mode This LED indicator is on when the unit is turned on It will blink to indicate a low battery condition This switch located inside the battery compartment sets the modulation frequency See Figure 3 2 This is the optical output connector interface The TOP130 is equi
21. ervice and calibration for the TOP series of handheld optical products The user should not attempt any maintenance or service of these instruments and or accessories beyond the procedures given in this instruction manual Any problems which cannot be resolved using the guidelines listed there should be referred to Tektronix factory service personnel Contact Tektronix Inc or your Tektronix representative for assistance The Tektronix TOP series optical instruments contain no user serviceable parts They are delivered in a permanently sealed condition 5 2 Obtaining Service To obtain information concerning factory service contact Tektronix Inc or your Tektronix representative Please have the following information available 1 Instrument model number 2 Instrument serial number 3 Description of the problem 5 3 Recommended Calibration Interval It is recommended that the TOP series instruments be recertified recalibrated every 12 months this provides the basis for an effective quality assurance standards program This service is available for Tektronix products at a nominal charge 3A NOTES 97 0555 86 rev B
22. ery life wei og 6 094 72 x 142 x 36mm 2 8 X 5 6 x 1 4in Specifications subject to change without notice Notes 1 Within specified ambient environment 20 eC to 25 C 2 in MODulated mode output power is 3dB lower 4 Return Loss to be 30 dB ER LIGHT DO NOT STARE INTO BEAM CLASS I LASER PRODUCT WARNING The TOP 160 device conforms to the requirements of CDRH Class CFR 1040 Subchapter J While there is no potential for eye damage due to unaided direct exposure users should always avoid looking directly into the output port The use of optical viewing instruments such as microscopes magnifiers etc should always be avoided The use of these devices around active fibers can focus 4 highly intense beam on to the retina which can result in permanent eye damage vii viii Specifications Optical Power Meter Model Number TOP200 Detector Material InGaAs Calibration ij Wavelenaths 850 1300 1550nm 0 25dB at Calibration Conditions Traceable to U S N I S T Boulder CO LCD simultaneously displays power to 0 01 dB mode and wavelength range Low battery amp calibration annunciators Snap On Connector Interface SOC see Table 1 1 for available SOC Adapters Operating 15 C to 55 C Environment 0 to 95 RH non condensing Environment 0 to 95 RH non condensing ___ gt 100hrs battery life 250g 8 90z Size W x Hx D
23. from improper use or connection to incompatible equipment or c to service a product that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the product THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THIS PRODUCT IN LIEU OF ANY OTHER WARRANTIES EXPRESSED OR IMPLIED TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OH FITNESS FOR A PARTICULAR PURPOSE TEKTRONIX RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES Table of Contents Safety Terms in This Manual Laser Safety xaas d s xA Aere CHR e bed ii Specific Precautions cesa c EpL ERE ER EU iv Specifications Optical Dual LED Source eller Ten Optical Laser Sources sese vi Optical Dual Laser Source sees vii Optical Power Meter lee nee viii Visual Fault Finder s ades Sora eS nate pees ix Section 1 General Information 1 1 Overview Les aoc E Rc SP n SEER HER 4 1 1 1 The TOP Series Optical Dual LED Source 1 1 2 The TOP Series Optical Laser Sources 1 1 3 The TOP Series Optical Power Meters
24. ients IEC 801 5 Surge WARRANTY Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one 1 year from the date of shipment If any such product proves defective during this warranty period Tektronix at its option either will repair the defective product without charge for parts and labor or will provide a replacement in exchange for the defective product In order to obtain service under this warranty Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix with shipping charges prepaid Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located Customer shall be responsible for paying all shipping charges duties taxes and any other charges for products returned to any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under this warranty a to repair damage resulting from attempts by personnel other than Tektronix representatives to install repair or service the product b to repair damage resulting
25. ing and researching singlemode SONET SDH CATV ATM and other types of fiber optic links The TOP 140 1310nm and TOP150 1550nm were developed for applications requiring only a single wavelength source Where loss measurements at both windows are required the TOP160 also offers the added convenience of a single output port The optical interface of the TOP series optical laser sources is the high performance universal connector interface UCI The UCI interface is ideally suited to the unique requirements of optical instrumentation whether in the most demanding outside plant OSP or lab environment First being truly universal the UCI interface is complemented by a full range of UCI screw on screw off connector adapters supporting a broad range of industry standard PC connector types FC SC ST D4 DIN E2000 and more Second where cleaning connectors is an especially important and routine step in the optical fiber world the UCI interface offers direct access for routine cleaning Third the durable tungsten carbide ferrule outperforms and outlasts traditional ceramic ferrule connectors In addition to the overall advantages of the UCI interface the output signal performance is characterized by two useful features One the absolute output power is calibrated which can speed up transmission loss measurements The user can always be assured that the output level will be consistent every time the unit is powered on Furthermore th
26. is reproducibility is matched by the multiwavelength reference storage of the TOP200 optical power meter see section 3 4 TOP200 and section 4 6 Dual Wavelength Testing Two using the user selectable CW or MODulated function the user can also internally set the MOD frequency to match the frequency signatures 270 1000 2000Hz required by fiber identifiers and other types of optical signal tracers Together with the Tektronix TOP200 optical power meter the fiber optic technician possesses the smallest and high performance test set in its class 1 1 3 The TOP200 Optical Power Meter The palm sized Tektronix TOP 200 optical power meter covers an extensive range of optical fiber applications It is engineered for field and lab personnel requiring a high performance cost effective compact and rugged optical power meter This power meter family incorporates the precision and repeatability of the snap on connector interface SOC which interfaces to all industry standard fiber optic connectors via a complete line of simple push on pull off SOC adapters The novel design of these power meters combines a state of the art signal processor and microcomputer electronics to provide superb performance as well as simple and elegant operation Only three controls are used ON OFF dBm dB and wavelength The TOP200 optical power meter incorporates a state of the art InGaAs photodiode for optimum IR wavelength performance InGaAs detector
27. lephony datacom CATV FDDI and LAN applications The instrument provides two calibrated outputs at 850nm and 1300nm to speed up transmission loss measurements Providing both CW and MODulated outputs the user can internally set the modulation frequency to match the frequency signatures 270 1000 2000Hz required by fiber identifiers and signal tracers The palm sized TOP130 provides the flexibility in a single unit to interface to all industry standard fiber optic connectors with high throughput repeatability and stability This optical interface of this instrument features the precision snap on connector SOC interface A wide range of push pull SOC adapters are available covering all popular industry standard fiber optic connectors including FC ST SC SMA E2000 DIAMOND etc The TOP series LED source is powered by two common AA alkaline batteries which provide over 20 hours of portable life The front panel Status LED blinks when the batteries are low Together with the TOP200 optical power meter the fiber optic technician possesses the smallest high performance fiber optic test set in its class Overview 1 1 2 The TOP Optical Laser Sources The Tektronix TOP Series comprise a range of palm sized single and dual wavelength laser sources supporting the 1310nm and 1550nm windows This series was developed in response to requests from the fiber optic industry for small rugged light sources for use in installing maintain
28. ly the launch end is the likely cause To verify this do the following Reverse the setup and launch from the far end Most likely you will now see more light escaping at the broken end Manually Introduced Bend Light Due to Bend Break in Connector No Light TOP300 Fig 4 8 Locating a Defective Connector If the connector does not show any anomaly then start introducing microbends with your finger until you can see the light escaping Keep introducing microbends while moving to the far end of the fiber until you no longer can see light escaping If the light is visible just before the connector then you can be sure that the far end connector is broken Look at the near end of the connector if excessive light is visible this is a sure sign of a problem within the connector interface 30 31 4 5 Visually identifying Breaks within Ferrules and Polishing Problems The TOP300 can also be used to pinpoint problems caused by bad connectors Ceramic ferrules are translucent and if there is a fiber break within the ferrule or right after the ferrule then the ferrule itself will glow indicating a broken or damaged fiber If the connector glows then it is definitely a bad connector M C cT Eh V A 7 Fiber Broken Within Ferrule Fig 4 9 Locating Fiber Break in a Ferrule Similarly if the endface polish of the fiber is not good then light is being reflected and this light will be visible through the cer
29. may not be stable while the battery discharges past this LOW BATTERY point To replace the battery follow these steps Step 1 To replace the battery remove the protective rubber jacket 1 Flip Out Sides Fig 2 1 Removing the Protective Cover Step 2 Turn the instrument on its front face and remove the battery cover by pressing on the center of the cover while pulling on its sides pem sed L rice Fig 2 2 Opening the Battery Compartment Step 3 Remove the used batteries and replace them with fresh new batteries Observe the correct polarization as indicated in the bottom of the battery compartment Failure to properly install the batteries in the correct orientation may cause damage to the instrument 10 11 2 3 Interchanging the Connector Adapter Your Tektronix TOP series instruments are equipped with either a SOC or UCI universal interface which allow the user to quickly adapt to all popular industry standard fiber optic connectors Select the appropriate adapter and attach it to the front end of the instrument as follows UCI Interface TOP140 150 160 300 Sources Instructions 1 Firmly press the adapter over the interface ferrule until it reaches the stop 2 Rotate the adapter body until the anti rotation pin engages 3 Firmly tighten the knurled adapter shell 4 To remove simply unscrew the adapter Fig 2 3 Interchanging the UCI Connector Adapter SOC Interface TOP130 TOP200 Instr
30. o SMF 28 Sum core fiber Uncertain into SMF 28 9um core fiber Connector Interface Universal Connector Interface UCI see Table 1 1 for available UCI adapters CDRH Class Operating Environment Storage Environment Batteries weigh Size Wx Hx D Specifications subject to change without notice Notes 1 Within specified ambient environment 20 C to 25 C 2 In MODulated mode output power is 3dB lower LASER LIGHT DO NOT STARE INTO BEAM CLASS LASER PRODUCT WARNING The TOP 140 and 150 are devices conforming to the requirements of CDRH Class CFR 1040 Subchapter J While there is no potential for eye damage due to unaided direct exposure users should always avoid looking directly into the output port The use of optical viewing instruments such as microscopes magnifiers etc should always be avoided The use of these devices around active fibers can focus a highly intense beam on to the retina which can result in permanent eye damage Specifications Dual Optical Laser Source Model Number TOP160 ete ome o nominal dem paa unen nominal aan tse LR 1 hr max deviation l 24 hr max deviation CW mode onl i 8 9um poma d 3 75dB Calibrated launch Uncertaint into SMF 28 90m core fiber emere oo Tam Connector interface UCI see Table 1 1 for available UCI adap 15 C to 55 C 0 95 RH non condensing 30 C to 60 C 0 95 RH non condensing Batteries e AA size alkaline 50hr batt
31. ow A If a complete test set source and power meter is available at each end it is advisable to test the output power of the TOP series sources and the condition of the test jumpers Connect the local source and power meter together with a test jumper per Figure 4 4 The source should be set to continuous CW output mode and the power meter set to the correct wavelength and dBm display units Note the P and P dBm readings For example a TOP140 laser source should read between 9 5 and 10 5dBm on the power meter Test Jumper 1 Location A Source Power Meter Test Jumper 2 Location B Power Meter Fig 4 4 Checking the Local Test Set s PA 27 B Connect the TOP laser source and power meter to their respective patch panel ports using the test jumpers per Figure 4 5 Plant Source Power Meter Fig 4 5 Forward Link Connection C Using the formula below take the dBm power reading of the power meter P3 and the nominal source output value shown in Table 4 2 corresponding to the TOP source model For example if the power meter reads 18dBm then for a TOP140 or TOP150 laser source the FORWARD link loss 10 18 is calculated to be 8dB FORWARD LOSS dB P4 P4 TEKTRONIX Wavelength Calibrated Output Source Model Fiber Source Value Tvpe Size dBm TOP130 DOLUS 20dBm 1dB MM 62 5 125 Singlemode Singlemode TOP160 1310 1550nm BRE Singlemode Table 4 2 Source Output Guide
32. p mm sim 1 hr max deviation Power Output Into 62 5 125 GI MM fiber 13dBm 50W 20dBm 10uW Into 9 125 SM fiber 38dBm 158nW Power Output 1dB Calibrated launch level Uncertaint into 62 5 125 GI MM Fiber Functions MOD Modulated output mode CW Continuous Wave DC output mode FREQ Frequency Selection switch accessible from battery compartment setable to 270Hz 1kHz or 2kHz Snap On Connector Interface SOC see Table 1 1 for available SOC adapters 15 C to 55 C 0 95 RH Environment non condensing 35 C to 70 C 5 to 95 RH Environment non condensing j 20hrs battery life g 240g 8 402 Size WxHxD 72x142 x 36mm 2 8 x 56x 1 4in 1300nm 1270 1340nm WARNING While there is no potential for eye damage due to unaided direct exposure users should always avoid looking directly into the output port The use of optical viewing instruments such as microscopes magnifiers etc should always be avoided The use of these devices around active fibers can focus a highly intense beam on to the retina which can result in permanent eye damage V Vi Specifications Optical Laser Sources Model Number TOP140 TOP150 Laser Type Fabry Perot Fabry Perot Center Wavelength nominal Wavelength Range 1520 1575nm nominal Spectral Width RMS 1 hr max deviation 24 hr max deviation Power Output 7dBm 100uW CW mode onl int
33. pped with a snap on connector SOC interface See Table 1 1 fora list of available adapters Output Connectors On and Low Battery Indicator OFF CW MOD Switch Fig 3 1 TOP130 Controls and Indicators NOTE These Source instruments are shipped with the modulation frequency switch set to 1kHz To change this setting simply remove the two AA batteries and set the switch to the desired position see Figure 3 2 Replace the batteries battery cover and protective instrument cover To operate the instrument in the modulated mode simply slide the main switch to the MOD position and the light will be square wave modulated Note The average power output will be 3dB less than the average power in CW mode Modulation Frequency Switch Fig 3 2 Changing the Modulation Frequency of the TOP130 140 150 160 Sources 16 17 3 2 TOP 140 150 Optical Laser Sources OFF CW MOD This switch turns the unit off or selects continuous CW or modulated MOD blink 1Hz mode ON and This LED indicator is on when the unit is LOW turned on H will blink to indicate a low BATTERY battery condition INDICATOR FREQUENCY This switch located inside the battery SELECT compartment sets the modulation frequency See Figure 3 2 OUTPUT This is the optical output connector CONNECTOR interface The TOP140 150 160 laser sources are equipped with the universal connector interface UCI See Table 1 1 for a list of available UC ad
34. s provide wide dynamic range and improved temperature stability as compared to the Ge detectors The TOP200 also features non volatile memory together with an internal CAL function allowing the user the option to recalibrate the instrument in his her own lab The power meters are powered by two common AA batteries which provide over 100 hours of operating life The custom LCD provides simultaneous display of both wavelength and dBm dB units as well as battery status Together with the Tektronix TOP series sources the fiber optic technician possesses the smallest and highest performance fiber optic test set in its class 1 1 4 The TOP Fiber Optic Visual Fault Finder The Tektronix TOP300 answers the request from the industry for a small rugged and truly versatile visual fault finder VFF for use in the installation maintenance and troubleshooting of fiber optic systems This palm sized visual fault finder features both CW and MOD blinking output modes The blinking mode is used for finding faults and breaks in any fiber The blinking light enhances viewing contrast light loss can easily be detected by the human eye Steady CW light output may be used for measuring fiber loss in the visible 630nm wavelength region The VFF may also serve as a substitute for HeNe gas laser applications The TOP300 employs a hermetically sealed laser diode coupled to the fiber interface Two AA alkaline batteries power the unit for a minimum of 20 hours
35. uctions 1 Locate the anti rotation key on the instrument s connector 2 With the keyway properly aligned slip the adapter over the interface until fully locked into place indicated by a snap 3 To remove simply pull adapter off the instrument Fig 2 4 Interchanging the SOC Connector Adapter Please refer to Section 1 4 for a list of available adapters For additional information or other connector types contact Tektronix Inc or your local Tektronix representative 2 4 Cleaning the Connector Interfaces To ensure absolute measurement integrity it is absolutely essential that the instrument interfaces be cleaned before each major use MOST IMPORTANTLY IT IS ABSOLUTELY CRITICAL THAT MATING CONNECTORS BE CLEANED EACH AND EVERY TIME BEFORE CONNECTING OR RECONNECTING TO ANYTHING INSTRUMENT INPUTS OUTPUTS TRANSMISSION EQUIPMENT PATCH PANELS ETC Without proper maintenance practices fiber optic equipment and systems will fail to function properly These performance degradations take many forms Measurement errors Poor analog transmission quality critical to CATV and microwave on fiber applications Digital bit error rates increase Coupled light power is reduced Receiver input power outside optimum operating range Dirty connectors may cause damage to their mated counterparts Tektronix TOP series instruments are equipped with either a SOC or UCI universal interface which allow the user to quickly adapt
36. uring the Insertion Loss of Connector Cable llle 33 List of Tables Connector Adapter Selection Chart 7 Source Selection Guide 0 0 0 00 23 Source Output Guide x34 Ed ute Y EE 27 Safety Terms in this Manual The WARNING heading in this manual explains dangers that could result in personal injury or death The CAUTION heading in this manual explains hazards that could damage these instruments In addition a NOTES heading gives information to the user that may be beneficial in the use of these instruments General Warnings and Cautions The following general warnings and cautions are applicable to these instruments LASER SAFETY The TOP140 150 160 and 300 are laser devices conforming to the requirements of CDRH CFR 1040 Subchapter J While there is no potential for eye damage due to unaided direct exposure users should always avoid looking directly into the Output Port The use of optical viewing instruments such as microscopes magnifiers etc should always be avoided The use of these devices around active fibers can focus a highly intense beam on to the retina which can result in permanent eye damage TOP140 TOP150 TOP160 LASER LIGHT DO NOT STARE INTO BEAM CLASSI LASER PRODUCT TOP300 LASER LIGHT DO NOT STARE INTO BEAM 4 mW max at 630 078 nm CLASS H LASER PRODUCT iii iv Specific Precautions Power Sources The TOP series is designed
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