Portable OTDR AE3000 User Manual
Contents
1. Storage 10 C 50 C temperature Comparative 5 humidity 20 Weight lt 2 5Kg Dimensions mm 248x201x75mm 34 AE3000 OTDR User Manual 12 Standard Configuration standard configuration amount OTDR AC DC power adapter charger User manual Bag SD card 1G FC adapter SC adapter USB data wire Toolbox software CD 35 AE3000 OTDR User Manual 13 Warranty 13 1 General Information AE3000 products are guaranteed for 12 months since the date they are sold But does not include following gt Built in Li ion battery is not under warranty gt The faulty caused by improper usage is not under warranty 13 2 Responsibility Avoid gt Any malfunction due to wrong operation without complying with this manual gt Warranty label was tear up malfunction caused by unauthorized person repair gt Malfunction due to the external mechanical force such as liquid soak heat cold fire and so on Our company does not take responsibility for other equipment damage due to connection with AE3000 Important 13 3 Service and Maintenance Send AE3000 for technical services or maintenance 1 Please contact our customer service center or local distributor technicians will confirm whether your equipment need to be tested repaired or calibrated 2 If possible please backup your data before send it for repair 3 Please try to use o2. as shown in Figure 1 3 Set wavelength measure mode distance range pulse width acquisition time and smoothing by direction button Press button F5 to quit setup interface 5 2 1 Distance Range Setup AE3000 have 8 distance range 2km 5km 10km 20km 40km 80km 160km 200km User should set proper distance range according to actual length of fiber or the length obtained from auto mode before measurement Set improper distance range will affect measurement In order to make user s setup more effective AE3000 associate pulse width with distance Please refer to Table 5 1 Distance Pulse 2km 5km 10km 20km 40km 80km 160km 200km width 5ns Y x x x x x x x 10ns E y x x x x x x 20ns E Y Y x x x x x 50ns x Y Y x x x x x 100ns x x Y E x x x x 435 AE3000 OTDR User Manual Distance Pulse 2km 5km 10km 20km 40km 80km 160km 200km width 200ns x x x E x x x x 500ns x x x Y E x x x 1000ns x x x x E x x x 2000ns x x x x Y x x x 5000ns x x x x x E x x 10000ns x x x x x Y x x 20000ns x x x x x Y Y Y 5 2 2 Pulse Width Setup Pulse width is width of optical pulse high power signal that immit to measured fiber The wider Pulse width is the farther OTDR can detect effectively but at the same time the dead zone is larger Therefore the choice of pulse width is related to distance of measured fiber The dista
3. then choose storage media in Media List menu by UP and DOWN button Press F2 Create Dir and then name the folder through software keyboard press F3 to confirm then a folder will be created automatically 7 6 File Printing Document can be print by computer analysis software Press FILE button to enter file interface and then user can switch menu of Store Load Delete and Explore through FILE button NOTE 24 AE3000 OTDR User Manual 8 Maintenance 8 1 Cleanness gt Please keep OTDR equipment clean and avoid oil dust and other dirt polluting the device gt Avoid using AE3000 under relative humidity gt 90 condition and in the rain or water gt Do not use organic solvent to clean the shell of equipment but the dry cloth is suggested gt Please protect surface of equipment and avoid scratches 8 2 Laser Interface Maintenance 1 Take off the cover 2 Take off the dust proof cap 25 AE3000 OTDR User Manual 3 Rotate laser adapter by anti clockwise 4 Draw laser adapter 5 Clean laser interface with absolute alcohol 26 AE3000 OTDR User Manual 6 Insert laser adapter into interface then rotate it by clockwise 27 AE3000 OTDR User Manual 9 Problem and Fault Diagnosis 9 1 Device Problem 1 General Problem gt Problem Black screen or fail to boot Possible Reason battery has exhausted power Solution Charging the battery by AC adapter charger conn
4. 4 5 5 1 5 2 CONTENT AE3000 OTDR Introduction 1 Features eoe tone eR iei 1 Keyboard introduction srerrernvvvnrvnvrvnnvnnvverernvrnerrrrnnnervrrerernnnn 2 Top Interface Introduction sse 3 Screen Display aat e eee Lee le es 4 Power S stem Gei eR Rb nd 6 Upgrade sess AA ee SE Le es 6 Security W rningsusagusat wane E poris 7 Laser Security Information 7 Electric Safety Information 7 Measurement Preparations AN 8 Measurement Preparations AN 8 OTE a p 9 System Setup uet ee eus eee deeds 10 Language ET in eee me EGER 10 Set Time and Date Setup arnrnrnnrnnnnrnnonrnnnnvnnenrnnnnrensnrnsenrenen 10 leegen EE 10 Brightness Setup enne ecto 10 Auto Power Off Time Setup ssenne 11 Measurement Mode Selection ssssssss 12 Auto Measurement Mode AAA 12 Normal Measurement Mode esee 13 5 3 6 1 6 2 6 3 6 4 6 5 7 1 7 2 7 3 7 4 7 5 7 6 8 1 8 2 9 1 9 2 9 3 10 11 12 Other Measurement Parameter Setup sssss 14 Analysis of traces and events 17 Trace display and event et 17 Trace Analysis xus estie e o P Ul dee 18 Add and Delete Events scceceeserceseseeeeeeeseeereeseneetennees 18 On and off Events Marker on Traces anrnnnnrnnnnvnnnnrnnonrnnnnrnnrn 18 Event Analysis a ero Lid ove e tecto re EE 19 File Management uitae seere RD ERE ER
5. event list Continuous Fiber it will be a diagonal without fiber faulty nn ee Continuous Fiber KF Continuous Fiber S i e H 2 4 10 A D D D 20 Figure 6 6 This symbol indicates that there is no event in fiber region The sum of all continuous fiber curve equal to total length of fiber Event list gives loss of the continuous fiber but no reflectivity 21 AE3000 OTDR User Manual gt Fiber End E Figure 6 7 This symbol indicates that there is no continuous fiber after the event point The location of the event point indicates total length of entire optical fiber 22 AE3000 OTDR User Manual 7 File Management 7 1 Storage AE3000 provide complete document storage and loading functions It can store up to 1000 measurement files User can name number and annotate for each trace It can also generate complete report sheet through PC analysis software Under main interface press FILE to enter file operation interface as shown in Figure 1 2 7 1 1 Choice of Storage and File Naming Under main interface press FILE to enter file interface press F1 Store and item Filename will be highlighted in green press ENTER or F2 Rename then name the file through direction buttons Switch to item storage device through UP and DOWN button choose storage media among internal memory SD and USB by pressing LEFT and RIGHT button Also user can store the file into file folder creat
6. battery inside with more than 10 hours working time Linux operating system and infinite upgrade Front panel On off Lignt Direction Buttons SD Interface Vice function Buttons Button Start Stop RS232 Interface Button On off 2 Main function Buttons Belt AE3000 OTDR User Manual 1 2 Keyboard introduction gt gt gt On off Button Use this button to turn device on off START STOP Button Use this button to start stop testing Main function Buttons e FILE File operation Such as storing load and deletion e SETUP Measurement Analysis and system Setup e MENU Information of system version upgrade and help e AUTO Automatic measurement shortcut key Soft Button Buttons F1 F2 F3 F4 F5 when pressed main function buttons it will enter into corresponding user interface and F1 to F5 respectively correspond to the software buttons on the screen Direction Buttons up down left right and ENTER when setup and trace analysis user can choose the direction and zoom with direction buttons AE3000 OTDR User Manual 1 3 Top Interface Introduction 12 3 4 5 Charge Indicator Red light indicates battery is charging and green light indicates battery has been full charged Charging Interface Connect the charger and charge the built in rechargeable battery RJ45 Interface Access the Internet for remote control and data sharing USB Interface Principal and subordi
7. been installed and measured side has been installed on the rack through some type of connector In this case user should select FC PC XX XX jumper to connect FC PC side connects OTDR XX XX is the type of measured fiber terminal adapter on the rack such as FC PC FC APC SC PC SC APC and so on The other is that measured fiber is a bare fiber In this case user should use FC PC bare fiber adapter or weld a jumper by yourselves Before using OTDR to measure Please prepare cleaning tools for fiber interface It is suggested to prepare anhydrous alcohol absorbent cotton or fiber cleaner Otherwise it will affect measurement accuracy seriously will damage equipment Suggest that users use an additional fiber to reduce dead zone Any OTDR has measurement dead zone If user is concerned NOTE in near end dead zone Please use an additional length of fiber whose length is known to eliminate dead zone The length of additional fiber is determined by user s experience When using the measurement results user should avoid this section of fiber AE3000 OTDR User Manual 3 2 On off Press on off button the on off indicator light turn red then OTDR equipment start booting Press on off button again a dialog box about power off reminder will appear Choose off to power off equipment and cancel to maintain power on state Press on off button for seconds will force device to power off AE3000 OTDR User Manual 4 System Setup
8. E 23 tele 23 Bo M Cm 23 DE o te ege eec diee idan een 24 CODY eed ete a tale er td An 24 Create Folders unco AS ev diua be 24 File Printing e eei 24 Maintenance inei tte Ree reb inser Fe dre ones 25 Gleanness Lice eene a aee iege 25 Laser Interface Maintenance AAA 25 Problem and Fault Diagnose 28 Device Problem e ette terere 28 Measurement setup problem AA 29 Automatic Diagnosis AA 30 A to Galibration s coit treten 32 Specification 2 2 Ae ea n eb dg 33 Standard Configuration cceeccceeeeeeeeeeeeeeeeseeeeteeeeneeeeeeeeeneees 35 13 Warranty 13 1 General Information 13 2 Responsibility Avoid 13 3 Service and Maintenance AE3000 OTDR User Manual 1 AE3000 OTDR Introduction AE3000 is a portable OTDR with stable and durable which aims at broadcast and telecommunication network measurement It is also the first OTDR to achieve data share of point to point and point to multi point via internet Users can remotely control this instrument via PC when conducting fiber maintenance and testing 1 1 Features gt Remote control via Internet Data share gt 6 4 color TFT LCD gt Friendly operation interface and convenient One button testing gt High speed signal processing less measurement time and faster result analysis gt Ideal for the field compact and lightweight shock proof water proof resistant to dust and common chemicals Lithium
9. P and DOWN button Users can change index of refraction value from 1 30000 to 1 70000 Changing index of refraction will changes measurement results Index of refraction is provided by optical or cable manufacturers NOTE It is suggest that users use group index of refraction of a length known fiber and remember it Scattering coefficient usually get from optical cable manufacturers Changing scattering coefficient will make event loss and reflectivity changed 5 3 3 Event Limit Setup Event limits include splice limit reflectivity limit slope limit and fiber end limit Methods refer to 5 3 2 Press F5 to exit If want to display all events please ensure that all limit items are chose in setup interface Whether show one specified event depends on the choice of threshold values of attenuation slope and reflectivity When any of above values exceed threshold value the event and its information will be shown in events list NOTE Event reflectivity will always be measured unless all other items can not be displayed For example When peak is saturated or event is submerged in noises instrument will not give accurate measurement 15 AE3000 OTDR User Manual value such as 300B It will read gt 30dB which means the reflectivity worse than 30dB Whether show slope value depends on the choice of threshold value of slope When measurement value exceed threshold value slope value will be shown 16 AE3000 OTDR Us
10. Portable OTDR AE3000 User Manual ver 1 0 Tianjin Deviser Electronics Instrument Co Ltd PREFACE This manual is an operating instruction of product AE3000 which is the OTDR product of Deviser Corporation If the content in this manual changed there will be extra notice If there are some errors in this manual during compiling and printing Deviser doesn t undertake the responsibility Reserve all copyrights Without permission of Deviser Corporation text of this manual can not be photocopied copied and translated If quote from this manual please give chapter and verse for it Security Notice Following security notices will be used in this manual About operation information and notice of AE3000 NOTE About important operation information of AE3000 if user breach may bring difficulty to use Important Attention alerts you to any condition that could spoil the AE3000 equipment or lose important data Attention Danger alerts you to any condition that could cause personal injury Danger Security of Laser Sender AE3000 has 1310nm and 1550nm high power semiconductor laser sender its security obey FDA21CFRE amp 1040 10 standard IEC825 1 EN60825 1 1994 III b standard Caution Mark INVISIBLE LASER RADIATION AVOID DIRECT EXPOSURE TO BEAM PEAK POWER WAVELENGTH 400 CLASS Ill b LA 1 1 1 2 1 3 1 4 1 5 1 6 2 1 2 2 3 1 3 2 4 1 4 2 4 3 4 4
11. Press SETUP to enter setup interface as shown in Figure 1 3 and then press button F3 to enter system setup interface System Setup Rm eem Loes Rm em System Setup Figure 4 1 4 1 Language Choice In System Setup Interface When the red rectangle frame surround Language menu pressing UP and DOWN button to switch languages 4 2 Set Time and Date Setup In System Setup Interface Select Time and date menu by pressing LEFT and RIGHT button Then modify time and date by pressing UP and DOWN button 4 3 Unit Setup In System Setup Interface Select Unit menu by pressing LEFT and RIGHT button Then switch between kilometer and mile by pressing UP and DOWN button 4 4 Brightness Setup In System Setup Interface Select Brightness menu by pressing LEFT and RIGHT button Then adjust brightness by pressing UP and DOWN button 10 AE3000 OTDR User Manual 4 5 Auto Power Off Time Setup In System Setup Interface Select Auto Off menu by pressing LEFT and RIGHT button Then set auto off time by pressing UP and DOWN button 11 AE3000 OTDR User Manual 5 Measurement Mode Selection 5 1 Auto Measurement Mode Auto measurement mode will automatically estimate the length of fiber set sampling parameters get trace and show a timetable and show trace result In auto measurement mode in addition to wavelength measurement time and group index of refraction other settings will be automatically co
12. d to OTDR must be clean Forbid connecting fiber with grease Otherwise the instrument will not work properly OTDR is engineering equipment When used at the field it may be failed to connect because of dirt into fiber connector So must pay great attention The correct way is Before fiber is connected to the laser interface its end should be cleaned by ethanol After Alcohol is volatilized the fiber can be connected to instrument When fiber is taken off from device the laser interface should be covered with the cap 2 2 Electric Safety Information gt The use of electrical equipment will be a serious security threat in the vicinity of flammable gases or fumes gt In order to avoid electric shock if any part of the appearance of instrument has been damaged do not operate it gt Only authorized personnel of our company can debug maintain and repair this device with power AE3000 OTDR User Manual 3 Measurement Preparations 3 1 Measurement Preparations Before the first use of the OTDR equipment please charge the battery Important When using OTDR equipment to measure the operator should ensure that the type of fiber connector consistent with the equipment Otherwise it will affect accuracy of measurement Generally OTDR uses FC PC fiber connector jumper Accordingly operator should prepare measurement pigtail or adapter that matches Usually operator will face two situations One is that measured fiber has
13. ected to an external power supply gt Problem The screen is almost white or characters are fuzzy after boot Possible Reason Brightness settings are not correct Solution Enter setup interface to adjust brightness of screen 2 Fiber Connector Problem Measurement trace malfunctions caused by improper fiber connection show as follows gt When measuring trace is shown in Figure 9 1 BB_001 sor T i 500ns Ml E IR 146395 F p S J FNum 1 Bee j or c d Dose EE 1 000 m Som m 15 3 R1 000 m j 0 0048 dBA Figure 9 1 Possible Reason use improper jumper interface connector is dirty 28 AE3000 OTDR User Manual 8 connector is aging Solution replace jumper clean the connector replace the connector gt When measuring trace as shown in Figure 9 2 2008 03 04 21 30 Figure 9 2 Possible Reason unreliable connection connector deviate positioning bolt deviate Solution D reconnect replace the connector 9 2 Measurement setup problem gt Problem Trace is too short and testing time is too long Possible Reason measurement distance range set is too long Solution Set proper distance range according to the actual length of fiber or the length measured through auto measurement mode 29 AE3000 OTDR User Manual Problem Show incomplete track meas
14. ed by user 7 1 2 File Information Press F4 to switch to File Info column then change information of Corporation Operator Cable Ident Fiber Number Fiber Nbr Inc Origin Loc End Loc and Direction the current selected item will be highlighted in green 7 1 3 File Storage After completing setup of related file name press F1 to store file press F5 to exit 7 2 Load Under main interface press FILE to enter file interface press F2 Load then choose media among internal memory SD card and USB in column Media List by UP and DOWN press ENTER or RIGHT to enter column File List choose the file you want to open by pressing UP and DOWN button then press F1 Open to open the file 23 AE3000 OTDR User Manual 7 3 Deletion Under main interface press FILE to enter file interface press F3 to enter Delete menu choose storage media through UP and DOWN button switch to File List column by ENTER or RIGHT choose the files and folders you want to delete by UP and DOWN button press F1 to delete this file press F2 to delete all files in current folder 7 4 Copy Under main interface press FILE to enter file interface press F4 to enter Explore menu choose files and folders you want to copy the same method as 7 3 press F1 and choose target storage media and path in pop up menu through direction button press F1 to copy 7 5 Create Folders Under file operation interface press F4 Explore
15. er Manual 6 Analysis of traces and events 6 1 Trace display and event list Analysis results will be displayed both in traces and event list after measuring The events which are displayed in event list are also shown on traces with number mark in sequence 2008 03 05 13 41 R 40 434km I R L 39 68 km 13 684B 0 341 dB km seus ml am em Trace Analysis Main Interface Figure 6 1 Events 1310nm 500 ns IR 146395 FNum 1 Event List Figure 6 2 Event list closely relates to measurements When making a new measurement event list will be refreshed When reflection events are saturated the maximum will be shown with gt This indicates that the actual value is larger than the shown value 2172 AE3000 OTDR User Manual The event list contains the following information of each event e Type Refer to 6 5 event analysis for details e Number A serial number for each event in sequence e Distance The distance from starting point to the event point with unit meter 1000 feet or mile Loss The loss of each event with dB unit Reflectivity The reflectivity of each reflection event based on measurement fiber e Slope The attenuation in each region of fiber with dB as unit loss distance e Total Loss Total loss from starting point to end point including event point loss and continuous fiber loss 6 2 Trace Analysis Result analysis can be d
16. nate mode each Connecting USB Keyboard and PC to copy data and system upgrade Optical Interface Standard FC PC SC PC optical Connector SC APC is optional AE3000 OTDR User Manual 1 4 Screen Display The user interface of AE3000 is Windows style so it is friendly and easy to use Current E 2008 03 06 16 30 a Y 5 00 dB div X 3 07 knvdiv 1310nm 1000 ns IR 1 46395 j FNum 1 ook L 000 m R000 m R L 000 m 0 00 4B dB km aom The a_i 9 00 128 Events Datace Main Display Figure 1 1 Press main function buttons and respectively show as follows 20080306 16 31 LJ ELI Filename XH 007 Corporation Devise Filename Number F 3 Operator TVXQ Filename Nbr Inc Yes CNo Cable Ident 1 Media Cm CSD CUSB Fiber Number ns MER Fiber Mr fue 6 Ye C No fintemal Origin Loc dm End Loc E Direction OE C E gt 0 FILE Figure 1 2 AE3000 OTDR User Manual Test Setup Se mm ma SETUP Figure1 3 x8 System Version A Auto Option 2 User Manual Dj mee option K mag H Modify Auto Eee ee md cu MENU Figure 1 4 AE3000 OTDR User Manual 1 5 Power System AE3000 use following powers gt AC Adapter Charger Charge automatically when connected AC adapter charger Rechargeable Batteries Li ion Battery with a long continuous power supply Battery works automatically when disconnected the AC adapter cha
17. nce is longer the pulse width should be wider AE3000 associate pulse width with distance When using OTDR user can choose proper pulse width according to experience 5 2 3 Acquisition Time Setup The longer acquisition time is the better signal s signal to noise improves and more accurate measurement results are User should choose a reasonable acquisition time Acquisition time is proportional to measurement dynamic 5 3 Other Measurement Parameter Setup 5 3 1 Smoothing Setup There are noises on OTDR trace usually The noises will be reduced through a series of average but can not be completely eliminated which is called trace noises Trace noises will cause measurement errors For the convenience of users AE3000 offer a smoothing switch When switching it on trace noises will be filtered But at the same time it will cause larger dead zone Users can determine to switch it on or off according to actual situation 14 AE3000 OTDR User Manual 5 3 2 Index of Refraction amp Scattering coefficient Setup Index of refraction and scattering coefficient can be configured in limit menu Method is as follows When under main Menu press button SETUP to enter into setup interface Press button F2 to enter limit menu Switch among Splice Limit Reflec Limit Slope Limit Fiber End Limit Index and Scatter Coeff by pressing LEFT and RIGHT button When Index menu or Scatter Coeff menu is selected change their values through U
18. nfigured according to measurement mode by instruments users do not need to setup AE3000 will configure measure and show measurement results automatically Generally automatic measurement function is used when user is inexperienced for OTDR operation User can firstly use auto mode and then setup and measure manually NOTE base on the results of automatic measurement Want to obtain trace in auto mode 1 Clean connector correctly 2 Connect fiber to optical connector 3 Press AUTO button to setup Change index of refraction by pressing UP and DOWN button Switch between index of refraction menu and wavelength menu by pressing LEFT and RIGHT button Press ENTER button for confirmation 4 Press F1 button to start automatic measurement After pressing F1 button the instrument will work as follows Check fiber connection if fiber connection has problems the process will be suspended Parameters configuration Measurement capture refresh trace on the screen and also there 12 AE3000 OTDR User Manual is schedule indication Complete measurement and analyze the results GShow captured parameters and results During measurement press AUTO will terminate the process NOTE 5 2 Normal Measurement Mode In normal measurement mode users can set all measurement parameters and finish testing manually Parameter setting methods are as follows Under main interface press button SETUP to enter into setup interface
19. one after finishing a measurement or loading a trace file First of all Press F1 cursor LR to switch to cursor left cursor right or cursor left and right and then can move the selected cursor by LEFT and RIGHT button Press F2 Zoom to zoom in and out traces Press RIGHT button to horizontal zoom in Press LEFT button to horizontal zoom out Press UP button to vertical zoom in Press DOWN button to vertical zoom out 6 3 Add and Delete Events Under trace analysis main interface as shown in Figure 6 1 press button F5 gt gt then press F3 Add Evt or F4 Del Evt can add or delete events at position of current enabled cursor 6 4 On and off Events Marker on Traces Under trace analysis main interface as shown in Figure 6 1 press button F5 gt gt then press F1 Hide Pic to clear event marks on traces once again press F1 Show Pic to show the marks 18 AE3000 OTDR User Manual 6 5 Event Analysis Each type of events has its own related symbols gt Non reflective Event for example welding points 20 a ae PFET i Dos slo Nomreflective Event Hep m NADA Eb Katz Figure 6 3 This type of events has characteristics of signal level sudden reduction of Rayleigh backscatter There are discontinuous points on downward sloping trace slope This type of events is usually caused by welding points macro or micro bend in fiber f threshold values have been set once the los
20. rger Li ion Battery is light safe and reliable It can be charged and discharged more than 300 times with proper use Must charge Li ion Battery with the charger that provided with AE3000 otherwise the battery may be damaged Attention In low temperature case the discharge capacity of Li ion battery will deteriorate When use it at low temperatures the time of power supply will be shorter 30 max than Important normal temperature 1 6 Upgrade Two Cases gt Under normal condition copy the upgrade program to USB disk then insert USB disk into USB interface of AE3000 It will upgrade automatically when boot gt Under system breakdown condition the system can be restored through USB interface Please keep USB cable well AE3000 OTDR User Manual 2 Security Warnings 2 1 Laser Security Information A Danger Attention The OTDR laser interface and end of pigtail can t be aimed at eyes on no condition Otherwise It may damage vision even blindness OTDR uses powerful semiconductor laser its strong power is sufficient to injure personal s eyes so please must pay great attention The correct way is that firstly take off the cap of OTDR laser interface on condition of power off then connect fiber and boot OTDR to measure After measurement firstly turn off OTDR then disconnect fiber finally put on the cap of OTDR laser interface immediately It should be noted that the pigtail which will be connecte
21. riginal packaging materials Please attach a instruction or report to describe malfunctions and phenomenon in details 4 Please return equipment to our local repair center with freight collect 36 AE3000 OTDR User Manual 5 After repaired we will return equipment with a repair report If warranty we will pay the return freight N Note If the return equipment works ok after testing all related costs should be taken charge by the user Important 237 AE3000 OTDR User Manual Tianjin Deviser Electronics Instrument Co Ltd Address No 40 Yibin Road Nankai District Tianjin 300113 China Telephone 86 22 27645003 803 Faxes 86 22 27645002 Website www devisertek com Mail overseasbiz deviser com cn 38
22. s of some event exceeds this threshold value the value will be displayed in event list 19 AE3000 OTDR User Manual Gain Event for example reverse welding points UU Gain Event D X ow VER Figure 6 4 This type of events means a welding point accompanied with obvious gain phenomenon As a result of two parts of fiber have different characteristics at backscatter joint Event list gives the loss of the event but the value does not represent the actual loss of the point Only by bidirectional fiber measurement and bidirectional analysis can obtain actual loss of the point HE Event for example fiber unfixed connector at Reflection Event 4 SN e Figure 6 5 20 gt AE3000 OTDR User Manual The peaks of trace indicate reflection events which is because of sudden interruption of index of refraction Reflection events make a majority of energy that is immited to fiber reflect back to light source If a reflection event has arisen it indicates that there is a connector or mechanical connection at the point even a bad welding point or crack Generally loss and reflectivity of reflection events will be given by OTDR When reflection peak reaches maximum value its peak will be flattened because that detector is saturated So its dead zone may increase If threshold value is set once exceed threshold value of reflectivity and or connector and this value will be displayed in
23. s with past they can activate automatic calibration function Press button MENU to enter menu interface Select Modify Auto menu by pressing direction buttons press button ENTER to calibrate automatically Menu Option 43 System Version Le Auto Option j User Manual odi Figure 10 1 238905 AE3000 OTDR User Manual 11 Specification Module Specifications attenuation type wavelength dynamic range event dead Haad sone nm dB zone m m AE3000L 1310 20 1550 20 33 31 bm 25m AE3000 1310 20 1550 20 35 33 4m 20m AE3000H 1310 20 1550 20 37 35 lt 3 5m lt 17m Main specifications Distance Km 5m 200km Pulse width ns 5ns 20us Measurement user defined smart link time with real time measurement function Distance 0 5m 0 003 xtesting uncertainty m distance resolution Linearity 0 05dB dB Loss threshold dB 0 01dB Loss resolution dB 0 001dB Distance 0 1m resolution m Sampling points 64000 Data storage 1000 item 2000 item AE3000L AE3000 AE3000H Others Display 6 4 inch TFT colorized LCD Fiber adapter FC PC SC PC Interface USB Principal and subordinate each SD RJ45 Battery built in rechargeable Li ion battery charging time lt 4 hours working time gt 10 hours Power AC DC adapter Input AC90 240V 10 Output DC18V Operating 0 C 40 C temperature x33 AE3000 OTDR User Manual
24. urement failure Possible Reason Measurement distance set is too short Solution Set measurement distance longer than or equal to the actual length of fiber Problem Measurement events are incomplete Possible Reason Pulse width is too large Solution Select a small pulse width 2 Increase measurement time Problem Trace noise is too large Possible Reason Pulse width is too small and scan time is not enough Solution D Increase measurement time 2 Appropriately increase pulse width 8 Set smoothing to high level 9 3 Automatic Diagnosis When the fiber interface connect badly the instrument will automatically diagnose and give remind messages Current L 2009 03 11 11 31 77 v soo amaiv X 172 79 nvdiv 1550nm 10ns IR 146395 FNum 1 j or L 000 m R 0 00 m R 000 m 000 dB dBm e ds sm UT Testing Fest mem Im em em Figure 9 3 30 AE3000 OTDR User Manual If there are other optical signals in measured fiber AE3000 will automatically alarm 2009 03 11 11 24 Y 5 00 dB div X 172 79 m div 1550nm 10ns IR 146395 A FNum I fh OE Strong light input EH L 000 m Fam m R L 000 m 0 00 dB dB km 0 00 X7 15 2 07 km 2km E D C i Strong light input Attention Figure 9 4 31 AE3000 OTDR User Manual 10 Auto Calibration After using a period of time if the users think that there are large deviations of measurement result
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