MicrOTDR - Electrocomponents
Contents
1. 1 MicrOTDR User Manual FIGURES Page 1 Front Panel Operating Controls 7 2 POWER OM aoe 9 22 TOR Selection zn 10 2 Laser ACV aine baie os 10 5 Single Event MEaSUre 11 6 Multiple Event Measure 11 7 Multiple Event Measure 12 8 Measuring Length 13 D EOW B ya uns piod des oo ER anne 14 TO Te OL EDS ass ae benne 17 11 decir 18 Page 2 MicrOTDR User Manual D DATACOM mom OPTICAL FAULT LOCATOR FEET METERS Page 3 MicrOTDR User Manual GENERAL The MicrOTDR Optical Fault Locator is rugged lightweight hand held test instrument for locating faults in multimode and singlemode optical fiber cable MicrOTDR utilizes patent pending OTDR Optical Time Domain Reflectometer technology to make fault location measurements to distances up to 20 kilometers with pinpoint accuracy The unit operates at the industry standard wavelength of 1310 nm and displays the distance to a fault in meters or feet The MicrOTDR is designed to measure the distance to fiber events along fiber cables in optical fiber systems Useful applications for the MicrOTDR include testing Wide Area Networks WANSs telecommunication spans of up to 20 kilometers Fiber to the Curb applications installation of multimode and singlemode fiber cabling and military systems The unit is an excellent tool for locating faulty connector2. reached release the button and the setting will remain Meters Figure 3 Select the IOR for the fiber optic cable you will be testing for a wavelength of 1300 nm multimode or 1310 nm singlemode Measurements Attach the fiber optic cable to the MicrOTDR s connector port Depress and hold the MEASURE button until the Laser Active annunciator displays typically 1 5 seconds and then release the MEASURE button Refer to the Figure 4 below Laser Active Meters Figure 4 Page 10 MicrOTDR User Manual Measurements cont The resulting measurement for a single event will be displayed as shown in Figure 5 This example shows that the distance to the EVENT 1 31 meters Meters Figure 5 When the MicrOTDR detects multiple events event number 1 will flash and the MULTIPLE EVENT annunciator will be displayed The distance to event number 1 will then be displayed and the event number 1 will extinguish Refer to figure 6 below This example shows that the distance to event number 1 1 31 meters Meters 31 MULTIPLE EVENT Figure 6 Page 11 MicrOTDR User Manual Measurements cont By depressing the MEASURE button again momentarily the next event number 2 will flash and then extinguish The distance to event number 2 will then be displayed Refer to Figure 7 below This example shows that the distance to event 2 1s 72 meters 72 MULTIPLE EVENT Figure 7 Depr
3. 1 69 2m IOR Variation IOR Variation 2 0 67 m Km per 001 IOR error 30m 30m 20 Km 49 dB 7 10 to 50 20 to 60 4 Alkaline batteries auto power off after 5 minutes gt 13 000 operations 7 7 X 4 0 x 1 7 in 195 x 100 x 45 mm 0 9 16 440 g ST
4. DATAC Lait MIcrOTDR Optical Fault Locator User Manual Datacom Textron 11001 31 Place West Everett WA 98204 TEL 425 355 0590 Toll Free 800 468 5557 FAX 425 290 1600 Internet www datacom textron com Warranty The MicrOTDR Optical Fault Locator is warranted against defects in materials and workmanship within a period of two 2 years following the date of purchase of the tester Any instrument claimed to be defective during the warranty period should be returned to Datacom Textron s Factory Service Center Call Datacom Textron for an RMA number prior to shipment ANY IMPLIED WARRANTIES ARISING OUT OF THE SALE OF THE MicrOTDR INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED IN DURATION TO THE ABOVE STATED TWO 2 YEAR PERIOD DATACOM TEXTRON SHALL NOT BE LIABLE FOR LOSS OF USE OF THE TESTER OR OTHER INCIDENTAL OR CONSEQUENTIAL DAMAGES EXPENSES OR ECONOMIC LOSS Some states and countries do not allow limitations on how long implied warranties last or the exclusions or limitation of incidental or consequential damages so the above limitations or exclusions may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state Datacom Textron certifies that this instrument was thoroughly tested and found to meet its published specifications when shipped from the factory MicrO
5. TDR Optical Fault Locator User Manual Copyright 2000 by Datacom Textron All rights reserved Printed in USA No part of this document may be used or reproduced in any manner whatsoever without written consent of Datacom Textron Information contained in this document is believed to be accurate and reliable However Datacom Textron may from time to time make changes to this documentation without notice Datacom Textron is not liable for technical or editorial errors or omissions contained herein Datacom Textron reserves the right to change the product specifications at any time without notice MicrOTDR is a trademark of Datacom Textron other product names brand names and services identified in this documentation are the property of their respective companies Printed in USA P N 14099 Rev A MicrOTDR User Manual CONTENTS Page Goneril eee eub 4 DE a TR T 5 Precautions dun ne 6 Front Panel Operating Controls 4 Operating Controls redes rte ioi do 8 ee er 9 ROWER Oi ee 9 Feet MEES een 9 TOR Select nz 10 10 ss ide aa ane 14 Repair amp Calibra hau 14 Battery Replacement 14 Optical Connector Port Maintenance 15 Optical Connector Maintenance 16 ses 17 Customer SUP DOL meer 19 dc a Ef 19 Technieal Assisfanee aussen 19 SPEEIHEALLONS ia 20
6. ected from 1 40 to 1 69 Measure Button This button when pressed activates the MicrOTDR s laser and digital measuring circuits Feet Meter Button This button will select either feet or meters as the unit of measure ON Button This button when depressed turns the MicrOTDR ON and OFF Page 8 MicrOTDR User Manual OPERATION Cable length measurement with the MicrOTDR is simple just plug your optical fiber or cable into the MicrOTDR s optical port connector on top of the unit press and hold the MEASURE button and read the distance feet or meters Power On To turn the MicrOTDR on press the ON OFF button once The unit will go through a display test while displaying all segments and annunciators after which the MicrOTDR s software version will display Figure 2 is the MicrOTDR s display after the self test has been completed and the MicrOTDR is ready to be used for measurement Meters Figure 2 SELECTING UNIT OF MEASURE Feet or Meters can be selected as the unit of measure This must be done before an actual distance measurement is made Press the FEET METERS button to select the desired unit Page 9 MicrOTDR User Manual IOR The Index of Refraction of the optical cable under test can be selected on the MicrOTDR Refer to Figure 3 Momentarily depressing the IOR button will display the existing setting Depressing and holding the IOR button will cause the setting to increment When the desired setting 1
7. essing the MEASURE button again momentarily will show if there is another event If event number 3 flashes the distance to event 3 would be displayed If event number 1 flashes this means that the MicrOTDR has measured only two events and the distance to event number 1 will be displayed again If it is desired to initiate a new measurement for instance to verify cable lengths prior to installation connect the fiber cable in question to the MicrOTDR s optical connector port Depress and hold the MEASURE button until the Active Laser annunciator is displayed and then release the MEASURE button Page 12 MicrOTDR User Manual Measurements cont The MicrOTDR will measure the distance to the event Refer to Figure 8 below In this case the distance to the end of the fiber cable event is 2242 meters i D DATACOM Meters TDR Micr ow OPTICAL FAULT LOCATOR FEET METERS IRA Figure 8 Page 13 MicrOTDR User Manual MAINTENANCE Repair and Calibration Repair of the MicrOTDR in the field is NOT recommended If the unit is not working make sure the batteries are good and that all connectors and connector port are clean If the unit still will not operate contact the Customer Service Department at Datacom Textron at 800 468 5557 or 425 355 0590 Battery Replacement The MicrOTDR Optical Fault Locator requires no periodic maintenance other than cleaning the optical connector
8. her than those specified herein may result in hazardous LASER light exposure It is important to keep all optical connections and surfaces free from oils dirt and other contaminants to ensure proper operation Proper cleaning procedures must be performed on fiber connectors connector adapters etc before conducting any measurement tests outlined in this manual 1 American National Standard for Safe Use of Lasers Publication ANSI Z136 1 1993 American National Standards Institute 11 West 42nd Street New York NY 110036 Page 5 MicrOTDR User Manual PRECAUTIONS Use care when working with any optical transmission equipment It 15 good practice to avoid looking directly at any optical fibers or optical sources The MicrOTDR emits a pulsed laser light for a short period of time and the user should not look directly into the connector port It is best to refer to your company s safety procedures when working with optical fibers or laser based systems It is important to keep all optical connections and surfaces free from dirt oils or other contamination to ensure proper operation This applies to all connectors that are connected to the optical port on the MicrOTDR as well as the optical port on the MicrOTDR itself Scratched or contaminated connectors can reduce system performance Refer to your company practices for cleaning optical connectors Always replace the protective dust cap on the MicrOTDR after use Note This e
9. port and replacing the batteries Battery life is approximately 13 000 operations The MicrOTDR will display the Low Battery annunciator as shown in Figure 9 below when the batteries require replacement The battery compartment located on the back of the unit holds four 4 AA Alkaline batteries Four Phillips screws hold the battery compartment cover in place Meters Figure 9 Page 14 MicrOTDR User Manual Optical Connector Port Maintenance All optical connections should be kept thoroughly cleaned Do not force any connectors together Scratches on the optical connector port will severely affect the performance of the MicrOTDR A supply of industry approved optical cleaning pads and adapter cleaning wands would be helpful in maintaining optical connectors and the MicrOTDR optical connector port Also a can of filtered compressed air is useful for blowing out any contaminates in the MicrOTDR s optical connector port and any connector adapters being used The following procedure is recommended to clean the MicrOTDR s ST optical connector port 1 Blow out any contaminates in the optical connector port using a can of filtered compressed air 2 Carefully clean the optical connector port using a 2 5mm swab Datacom Textron Adapter Cleaning Wands 3 Always replace the dust cap Page 15 MicrOTDR User Manual Optical Connector Maintenance It is very important to clean any fiber optic cable connector that is connec
10. quipment 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 when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual 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 Page 6 MicrOTDR User Manual FRONT PANEL OPERATING CONTROLS DD DATACOM TDR OPTICAL FAULT LOCATOR FEET METERS ON MEASURE OFF IRA Page 7 MicrOTDR User Manual OPERATING CONTROLS Optical Port Connector The port is equipped with an ST style connector The wavelength for this port is 1310nm and can be used for multimode or singlemode applications Liquid Crystal Display LCD When the MicrOTDR is first powered ON the unit goes through a self test and all display segments and annunciators are illuminated on power up NOTE Some of the annuciators illuminated LINK and VFL on power up are currently not a function used in the MicrOTDR IOR Button This button selects the Index of Refraction IOR of the optical fiber cable under test Its range can be sel
11. s damaged components bad splices and breaks in singlemode and multimode cable sections It is also much easier to use than an OTDR for checking reels of fiber optic cable for length and defects The MicrOTDR has been designed with the technician in mind with many easy to use features It has a large LCD display for viewing ease and can be used on multimode or singlemode cables Its easy one button operation is used for activating the units measure function and the Index of Refraction setting can be field selected with the use of a single button The MicrOTDR is designed to record up to seven events displaying the distance to each event The MicrOTDR 1 powered by four AA Alkaline batteries that can provide greater than 13 000 operations An advanced power supply circuit ensures maximum battery life Sensing circuitry alerts the operator of low battery conditions The auto power off circuit turns the unit off 5 minutes after the last reading to preserve battery power Page 4 MicrOTDR User Manual SAFETY The MicrOTDR Optical Fault Locator is a Class I laser product under the requirements of both the U S Center for Devices and Radiological Health and the American National Standards Institute As such it presents no hazard to users who view the output when using proper operating procedures However it is recommended that users should not stare directly into the beam Use of controls or adjustments of procedures ot
12. t faults in the first 30 meters of a fiber optic cable it may be useful to use a launch cable at least 30 meters between the MicrOTDR and the cable under test 20 meters 100 meters 500 meters 1000 meters MicrOTDR Meters 120 MULTIPLE EVENT 620 MULTIPLE EVENT 1620 MULTIPLE EVENT Figure 11 Meters Meters Page 18 MicrOTDR User Manual CUSTOMER SUPPORT Repair If repairs for your Datacom Textron Model MicrOTDR are necessary contact Datacom Textron Technical Support at Datacom Textron 11001 31st Place West Everett WA 98204 TEL 800 468 5557 or 425 355 0590 FAX 425 290 1600 WEB www datacom textron com Technical Assistance Should you need technical assistance with the Model MicrOTDR contact Datacom Technical Support at the following numbers 800 468 5557 or 425 355 0590 Page 19 MicrOTDR User Manual SPECIFICATIONS Optical Optical Connection Single Port Emitter type Laser Emitter Classification Class Wavelength 1310 nm Pulse Width 200 ns Typical Pulse Rate 500 kHz Emitter Fiber Type Index of Refraction End Measurement Accuracy Minimum Distance Measured Dead Zone Maximum Distance Measured Minimum detectable signal 10Km Number of events detected Operating temp Storage temp Power Internal Battery life Alkaline Physical Dimension Weight w battery Connector Type CE Patent Pending Page 20 Multimode amp Singlemode 1 40
13. ted to the MicrOTDR s optical connector port The following procedure is recommended to clean the fiber optic connector l Carefully wipe ferrule with lint free tissue Datacom Textron ReelCleaner Connector Cleaning System 2 Always replace the dust cap Page 16 MicrOTDR User Manual HELPFUL HINTS NOTE The distance to the first event and between events must be at least 30 meters If any event 1 less than 30 meters the MicrOTDR will not recognize that event Refer to the example in Figure 10 In this example there are four 4 events that the MicrOTDR will recognize and display Event 1 will be displayed as 30 meters event 2 will be displayed as 130 meters event 3 will be displayed as 630 meters and event 4 will be displayed as 1630 meters 30 meters 100 meters 500 meters 1000 meters MicrOTDR Meters 30 MULTIPLE EVENT 130 MULTIPLE EVENT 630 MULTIPLE EVENT 1630 MULTIPLE EVENT Meters Meters Figure 10 Page 17 MicrOTDR User Manual Helpful Hints cont In the following example there is an event that is less than 30 meters The MicrOTDR will not recognize this particular event however the MicrOTDR will recognize the subsequent events Refer to Figure 11 In this example there will be three 3 events displayed Event 1 will be display as 120 meters event 2 will be displayed as 620 meters and event 3 will be displayed as 1620 meters In order to detec
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