Mini-OTDR USER`S MANUAL FiberRanger 3
Contents
1. 1 minute MENU 2 depressing this key advances the instru ment through the soft key menus Hit the key again to advance to Menu 3 the parameter modes When in the parameter mode F1 F2 F3 IOR 1 468 depressing this key in allows chang ing the Index Of Refraction with the arrow keys Use the left and right arrow keys to select the digit then the up and down arrow keys to increase or decrease that digit In V2 1 or greater hold the up down keys for 1 second to change the 10 units and 3 seconds to change the 100 units Factory default values are 1 468 for SM or 1 486 for MM A4 1310 nm depressing this key allows changing the laser source from available wavelengths of 850nm 1300nm 1310nm 1490nm and 1550nm de vice dependent MENU 3 depressing this key advances the instru ment through the soft key menus Hit the key again to advance to Menu 4 the export and auxiliary modes When in the export and auxiliary modes A A A A y Export 7 y Auxl y F1 F2 F3 13 Export depressing this key enters into the Export function secondary menu Available export features are Print Store Recall RS232 and MEMDUMP This can be selected with the up or down keys Print depressing this key sends the current screen information to a Sipix A6 thermal printer through the RS232 electrical port on the front panel Store depressing this key saves the current trace and data information into the displayed storage loca tio2. LP Long Pulse X Extended Mode 30 9 1 Instrument Specifications Long Range Version note specifications subject to change without notice Pulse widths Distance interval Distance Range Horizontal Expansion Wavelength of operation Dynamic Range Dead Zone Averaging Time Vertical Expansion Vertical Resolution Group IOR Range Fiber Connector Type Data acquisition Method Data Storage Computer Interface Power Size Weight Long Range LR 4m 13 ft SP 100m 330ft LP 2m 6ft SP 8m 25ft LP 32m 105ft XM 4Km 13Kit SP 16Km 50Kft LP 64Km 215Kft XM 1K 512 256 128m div SP 4K 1K 512 256m div LP 16K 8K 4K 2Km div XM 850nm 1300nm 1310nm 1490nm 1550nm 20nm device dependent 23dB Typical LP 6m 20 ft Typical SP 1 4 Second Real Time up to 1 Minute Scanning 0 5 1 2 4 dB div 0 01dB 1 024 2 048 SingleMode FC UPC Multimode ST N Point Averager 255 traces RS 232 8 NiMH AA batteries or 12V Charger 110 or 220VAC 7 0 x 4 5 x 3 0 2 0lbs Handheld 8 25 x 6 5 x 3 5 2 75lbs Ruggedized SP Short Pulse LP Long Pulse X Extended Mode 31 9 2 Instrument Specifications C Version note specifications subject to change without notice Pulse widths Distance interval Distance Range Horizontal Expansion Wavelength of operation Dynamic Range Dead Zone Averaging Time Vertical Expansion Vertical Resolution Group IOR Ra
3. When in the Event Table Mode Splice gt 1 depressing this key selects the sensitivity option of the event analysis Splice gt 1 provides the highest sensitivity option which will search for and display many events in the fiber down to 0 1dB loss for non reflecting splices and low level reflections and gains The medium sensitivity displays less events only going down to 0 2dB and more intense reflections The lowest sensitivity option displays the least amount of events down to 0 5dB splice and even higher levels of reflections required The highest sensitivity should be used for high signal level low noise long pulse averaged traces Noise pickup in the event table can be reduced by decreasing the sensitivity to 0 2 or 0 5dB ranges Due to noise on the trace and oddly shaped fiber perturbations not all events will be displayed even with the highest sensitivity settings To enable detection of splices down to 0 1dB and minimize the display of false events maximize the fiber signal level with the longest appropriate pulse width and minimize the noise with the longest averaging 18 Show Trace depressing this key toggles between the Trace or Event Table display modes When scanning selecting the event table mode will halt the current scan In Event Table mode up to 10 possible events will be displayed The last saturating event peaking at gt 23dB or if none the last event will be shown as the possible end of link A
4. fully install the circuit board pack and front panel into the rugged case being certain that the fiber and elec trical cords are free from kinks Tighten down the knurled knobs with their fiber washers while gently pressing on the front panel corners If the instrument fails to function properly contact the factory for ser vice 22 6 2 6 4 Laser Out Port In order to maintain a low loss fiber connection care should be taken to adequately clean the ferrule of any connector to be inserted in the Laser Out port In the event that the port needs to be cleaned we sug gest the use of isopropyl alcohol and foam swabs specifically designed for cleaning connectors accept ing 2 5mm ferrules Do not under any circumstance view or inspect the laser output fibers connectors or the fiber under test through collimating or focusing optics A video inspec tion microscope should be used to examine all fiber ends Contact your Wilcom sales representative for video microscope information Recalibration and Verification Periodic verification of the MINI OTDR is recom mended to ensure that your instrument remains within specification Although not imperative we recom mend a recalibration and verification once a year to make certain the instrument is functioning properly and performing to its rated specifications Consult the factory for service 23 7 0 7 1 Application Information Optical Time Domain Reflectometer Measurem
5. of their fiber or cable the appro priate pulse width to use for their application and the associated dead zones from that pulse width These features can be modified via the instrument menu structure See section 5 The fiber Index of Refraction IOR is an important parameter that must be entered by the user to maxi mize the distance measurement accuracy The IOR is proportional to the speed of light in glass com pared to the speed in a vacuum and can be calcu lated by the equation IOR C the speed of light in a vacuum V the speed of light in fiber The IOR number can be obtained by the fiber or cable manu facturer or can be calculated with a known length of cable IOR numbers generally fall around 1 468 SM 1 486 MM the default value but can be adjusted from 1 0 to 2 0 To calibrate the IOR for your particular fiber take a known distance of fiber or cable best if around 1 kilometer and measure the distance with the Mini OTDR set for short pulse changing the IOR until the measured distances closely match An error of 001 of the IOR entry 1 468 vs 1 469 equates to an error of approximately 0 7 meters per kilometer of distance measured The pulse width the other important user entered parameter will affect the capability of measuring distance to major events For Long Range units the short pulse is recommended for short distances of fiber between 10m 33ft and 4Km 13Kft The long pulse is recommended for longer d
6. soft key control for easy view ing and sunlight readability The mini OTDR is capable of measuring splice loss or link attenuation The singlemode and multimode output ports use high power 850 1300 1310 1490 or 1550 nm pulsed laser source The backscatter re ceiver uses a temperature compensated avalanche photodiode for reliable stable performance in fiber links from tens of meters to over 64Km A 50MIPS high speed microprocessor provides the N point averaging function and control for lt 1 4 second Real Time update rates or 65K trace averages in lt 1 minute Introduction cont The QVGA monochrome display provides a power ful yet simple set of fiber parameters and control in dications to view an entire fiber link or zoom in and analyze a splicing point or defect in the fiber The display shows the fiber loss vs distance in its large central graph The scales are automatically updated for expansion modes and positioning of the dual line cursors used for loss and distance measurement Individual and dual cursor measurements are spelled out as well as important instrument parameters such as Index Of Refraction pulse width scanning speed and a battery gauge Programmable soft key menus are updated for instrument modes of measurement scanning or auxiliary parameters The 9 key membrane keypad provides simple straightforward commands to take a scan make measurements or navigate the soft key menus Anew scan is accomplishe
7. 622 FAX 603 524 3735 www wilcominc com IMPORTANT Never send any equipment back to Wilcom without a Return Material Authorization RMA number 3 Pack the equipment in its original shipping material Be sure to include a statement or report fully detailing the defect and conditions under which it was observed Also be sure to include a contact name and telephone number 4 Return the equipment prepaid to the above address Be sure to write the RMA on the shipping slip Wilcom will refuse and return any package that does not bear the RMA Ordering Information Orders for any of the Wilcom products and any of their optional accessories should be directed to the address shown above 33 11 0 Version Control Through a program of continuous improvement we upgrade the features and performance of the instrument in an on going process The instrument firmware version is acces sible either at turn on in the upper right hand area of the LCD display V1 6 or on Menu 2 with the middle soft key when short pulse is selected V1 0 1 5 The version changes and approximate release dates are as follows V1 0 06 2002 original long range release V1 1 08 2002 added extended mode V1 2 10 2002 added dB Km feature V1 3 03 2003 added MEMDump feature and version dis play at turn on V1 4 09 2003 updated status flags for Rs232 output V1 5 02 2004 added Kilofeet feature V1 6 06 2004 introduced Long
8. Range version with im proved speed and short pulse averaging V2 0 06 2005 introduced C series version with triple pulse width and up to quad wavelength V2 1 04 2007 added Event Table Autoscan and 1 10 100 indexing features 34
9. Wilcom FiberRanger 3 Mini OTDR USER S MANUAL Avoid exposure Laser Radiation Emitted from the aperture This product conforms to CDRH standards for laser product Per 21 CFR 1040 10 amp 1040 11 FiberRanger3 mini OTDR 813 159 007 Operating Instructions August 2007 Copyright c 2004 2005 2006 2007 Wilcom All Rights reserved Wilcom reserves the right to make changes to the material contained herein without notice and shall not be liable for errors contained herein or for incidental consequential dam age in connection with the furnishing performance or use of this material This document may not be copied or duplicated in part or in whole for any purpose without the express written permission of Wilcom Table of Contents SECTION PAGE 1 0 INOGUCTION sas vciiicccceuvcuiivece cid caviwicvenwciecwuietinaneaneeed Instrument Description 2 0 Preparation for USC ccceceseeceeesseeeesseeseeesseeeteeteens Inspection Identification Configuration Power Requirements Unit Configuration 3 0 CAUTIONS fodeciessncewsidnecctie dd coed chet a aa ae aar ai aiaia Batteries Laser Safety 40 Features acesin cdiccicuaetdccusnisvassccucenwucuwawtansudaeaidenawaeasonadse 9 Mechanical Functional 5 0 Operation ETE AEE A AETS II Functional Description of Membrane Keys Functional Description of Display Functional Description of Event Table Display 6 0 Maintenance _ ccccceceeccneenssssssccsscceeeeeene
10. bers over 16Km 52Kft in length use long pulse e LAN L units and C series Normal mode e When measuring down to 5m 16ft and up to 1Km 3 3Kft events can be detected within 1m 3 3ft e Short pulse will not work properly with fibers over 8Km 22Kft in length use long pulse Typical applications and expected results for the medium pulse C series only are as follows e Xtnd mode e When measuring greater than 50m 164ft events can be detected within 8m 25ft e When measuring up to 16Km 53Kft events can be detected within approximately 0 7m Km 2ft Kft 27 Normal mode When measuring greater than 50m 164ft and up to 4Km 13Kft events can be detected within 4m 13ft Medium pulse Normal mode will not work properly over 16Km 53Kft When measuring up to 16Km 53Kft events can be detected to within approximately 0 7m per Km 0 7ft Kft Typical applications and expected results for the long pulse are as follows It is difficult to measure smaller reflective events APC UPC connectors or mechanical splices in the long pulse use the short pulse for up to 1Km 3 3Kft LAN L 4Km 13Kft Long Range LR Long Range LR and C series Xtnd mode When measuring greater than 100m 330ft events can be detected within 8m 25ft 32m 105ft Xtnd When measuring up to 64Km events can be detected within approximately 0 7m Km 2ft Kft LAN L and C
11. d as easily as pressing the Scan button within 1 4 second fiber trace data is acces sible To automactically adjust for an unknown fiber length hold the scan key down for 2 seconds The soft key menus are navigated by 3 buttons to pro vide manipulation of graph expansion and cursors or selecting important parameters such as pulse width index of refraction or laser wavelength Ex porting data or controlling special functions such as display contrast or loss mode are available in the auxiliary menu structure The Print Store Recall RS232 MEMDUMP ex port features are useful for analyzing previously taken fiber trace data either on the graphics panel or viewed ona PC or printer The storage of trace data is made to a 255 step table Data can be retrieved via soft 2 Introduction cont key entry and the entire table can be scanned on the graphics panel The data is transmitted to a personal computer or directly to a thermal printer via the RS232 port The previous single or dual wavelength LAN high resolution version min OTDR units were designed for shorter distances of fiber Km 4Km or 16Km spans with higher resolution capability 1m 4m or 16m The single or dual wavelength Long Range LR version min OTDR units have longer distance capabilities 4Km 16Km or 64Km spans using lower resolution sampling 2m 8m or 32m The latest C series mini OTDR units incorporate Triple or Quad wavelength capability and b
12. displays 145 when you depress the Recall Key the trace will be the one stored at position 145 then_the displayed number will now_read 146 RS232 depressing this key transmits the current trace and data information out the RS232 stereo mini jack on the front panel The transmission mode is selected in the auxiliary menu with choices of 115200 8 n 1 or 57600 8 n 1 with no flow control Please call you sales representative if you would like to purchase the Mini OTDR Certification Software MEMDUMP depressing this key transmits all stored traces and data information Transmission takes ap proximately 4 seconds per active stored trace to abort press MEMDUMP again Auxl depressing this key enters into the Auxiliary function secondary menu Available Auxiliary features are LCD Contrast Loss mode Auto Off mode Baud rate mode Distance Mode Range Mode_and Back Light Each can be selected with the up or down keys 15 LCD Cont depressing this key allows changing the LCD contrast to brighten or dim the display After selecting the function with the first key depression use up and down arrow keys to increase or decrease the contrast from 0 to 9 Loss 2pnt depressing this key toggles the dis played loss measurements between 2 Point Splice Loss and dB Km dB Kft method 2 Point loss method takes the difference in vertical height between where the A and B cursors cross the fiber trace to determine loss The dB Km dB Kf
13. e section to clean the optical con nector NEVER open the instrument behind the mem brane keypad panel for cleaning Return to the fac tory for servicing if necessary Mini OTDR Packaging The instrument is shipped in a protective cardboard container along with the charger RS232 connectors and this manual Save the protective packaging for storage and shipment Functional Power Save The Mini OTDR incorporates a battery save feature that allows for maximum utilization of the battery life Upon turning the unit on it keeps track of the keypad activity 9 If no key presses are detected for a period of approximately 15 minutes the unit will automatically turn itself off storing the current mode settings To disable this feature enter the auxiliary menu auto off feature and select Auto DIS To enable this feature select Auto ENB When enabled an a appears next to the battery gauge on the LCD display Low Battery and Power Shut Down The Mini OTDR incorporates battery monitoring cir cuitry to manage the discharge and inform the user when the battery charge is approaching an unsatis factory level A battery gauge is displayed on the graphics panel that shows relative battery charge depth When approximately ninety percent of the bat tery capacity has been expended the gauge shows empty indicating to the user that the batteries need recharging and allowing a short period of time to fin ish using the instrument Th
14. e unit automatically pow ers down when the batteries become fully discharged Printing The Mini OTDR incorporates a printing feature avail able in the Export menu A Sipix A6 serial thermal printer driver is built into the instrument firmware Using the modular serial cable and the 9 pin DB9 male adaptor supplied with the Mini OTDR connect to the serial cable supplied with the printer When energizing the printer allow 5 seconds for the formfeed before pressing the print key 10 5 0 Operation 5 1 Functional Description of Membrane Keys Turns the unit On and Off Depressing this key will cause the unit to start an other scan or stop the current scan Holding the key down for 2 seconds causes the unit to automatically AUTO search for 1 minute when in SCAN mode for the end of the fiber and adjust the distance range and pulse widths accordingly At the end of the search DONE will be displayed To enhance data acquisi tion speed while scanning the keyboard is monitored every 1 4 second for further key activity This can cause a slight delay in keyboard response ooo Arrow Keys left and right are used to move the cursors Up and down are used to change appropriate settings dependent on operational mode In V2 1 or greater hold the up down keys for 1 second to change the 10 units and 3 sec onds to change the 100 units oa Function Softkeys F1 F2 or F3 These keys are graphics display de finable keys and wil
15. ennnneeneeenn Battery Replacement Laser Out Port Recalibration and Verification 7 0 Application Information was AE Optical Time Domain Reflectometer Measurements Applications and Results 8 0 Troubleshooting assssunnsnnnnnunnunnunnnnnunnnnnnnnnnnnnnnen 2 9 0 Instrument Specifications ceseeseeeeeeees 30 10 0 Service and Repair ccccccscsssssseceeteeseeeeeenteeseenseees 33 11 0 Version Control 0 ceseece ec ceseeesseeeseeesseeesseesseeeesees 34 1 0 Introduction The Mini OTDR is the first low cost portable Optical Time Domain Reflectometer with the core functions required to measure optical fiber from one end dur ing installation repair and verification The Mini OTDR is equipped with a 4 QVGA graphics presen tation of fiber loss vs distance single to Quad Laser sources and a quick reference instruction card in the ruggedized lid The instrument is designed for stand alone operation or connection to an optional printer or PC through the RS232 Export feature The ruggedized mini OTDR is contained in a compact rugged plastic housing with watertight extremely heavy duty protection when sealed All controls are accessible via a 9 key weatherproof membrane or conductive rubber keypad offering simple straight forward functionality Measurement data and mode indication is supplied via the QVGA LCD display that offers expandable trace fiber data mode and param eter enunciation and
16. ents The Mini OTDR is designed to be used as an instal lation troubleshooting and maintenance tool for short to medium haul fiber networks The Mini OTDR is a full featured Optical Time Domain Reflectome ter but unlike OTDRs that cost thousands of dollars more the Mini OTDR is very simple to operate The Mini OTDR measures distance and loss of fi ber links up to 64Km 215Kft by launching an optical pulse down one end of the fiber and analyzing the returned energy in time or distance from reflec tions The Mini OTDR uses an advanced high speed embedded controller and display processor with pro prietary technology to analyze store and average the fiber trace data in the quickest time This high speed processing engine allows the user to make distance and loss measurements immediately after energizing the instrument With its advanced Event Table Splice Loss Mode and dB Km Mode it also can assist the user in interpreting major events such as bad splices connections or broken ends Minor perturbations along otherwise normal fiber links can also be detected using a simple moving cursor ap proach in Splice Loss Mode Complex return sig nals with many major or minor events can be ana lyzed by the Mini OTDR then stored away for archiving and later retrieval With the Mini OTDR there are a few parameters of interest to assist in obtaining reliable consistent 24 measurements The user must be aware of the In dex of Refraction
17. f 850nm 1300nm 1310nm 1490nm or 1550nm The unit has been designed to comply with 21 CFR Code of Federal Regulations 1040 10 and 1040 11 for Class emis sion limits Although the FDA does not consider Class 1 levels to be hazardous we suggest limiting expo sure by not looking directly into the laser aperture Also do not under any circumstance view or in spect the laser output fibers or connectors through collimating or focusing optics unless the unit is turned off batteries are removed and power adapter is dis connected Inside cover of the Mini OTDR to describe location of labels Quick Reference Card Serial Number Date of Manufacture Label Laser Safety Label 4 0 4 1 4 2 Features Mechanical Instrument Enclosure The Mini OTDR is housed in one of the most rugged plastic enclosures available With the lid closed and locked and the purge port tightened this enclosure is air and water tight The purge port is supplied to temporarily balance the inside and outside air pres sure to facilitate opening the unit after using it in higher altitude environments Remember to retighten the purge port after every use Although the front panel membrane keypad is weather resistant care must be taken to avoid liquids and contaminants around the fragile optical and electrical connectors and the glass display Use a mild cleaning agent and damp soft cloth to clean up the panels and the outside case See the maintenanc
18. ions free from defects or splices A consistent reading while mov ing the cursor a few meters verifies flat levels Auto ENB depressing this key toggles the unit between Auto Off function enabled or disabled When enabled the unit will automatically turn itself off after 15 minutes of keyboard inactivity and an a for auto appears next to the battery gauge Baud 115K depressing this key toggles the RS232 transmission speed between 115200 8 n 1 115K baud rate 8 data bits no parity 1 stop bit no flow control or 57600 8 n 1 for hookup to an external PC Dist Km depressing this key toggles the unit be tween measuring kilometers and Kilofeet Range Xtnd used to select shorter Norm or longer Xtnd sections of fiber analysis Depressing this key toggles the Metro unit between normal mode 16 Km range or extended mode 64Km range Depressing this key toggles the LAN unit between normal mode 4Km range or extended mode 16Km range Depressing this key multiplies the range in the C series mini OTDR unit short medium long pulse by a factor of 4 1Km 4Km 16Km becomes 17 4Km 16Km 64Km When in the extended mode an x appears in the horizontal scale factor display BkLt ON depressing this key toggles the display backlight off and on Battery operation time is some what longer with the backlight off MENU 4 depressing this key again to advance the instrument to Menu 5 the event table mode
19. istances up to 25 64Km 215Kft The dead zone or initial signal satu ration for the first few meters is 10m 33ft for short pulse and 100m 328ft for long pulse Also the mea surement resolution changes from 2m 6ft for the short pulse to 8m 25ft 82m 105ft Xtnd for long pulse For LAN short distances of fiber between 5m 16ft and 1Km 3 3Kft the short pulse is recom mended The long pulse is recommended for longer distances up to 16Km 53Kft The dead zone or ini tial signal saturation for the first few meters is 6m 20ft for short pulse and 50m 160ft for long pulse Also the measurement resolution changes from 1m 3ft for the short pulse to 4m 13ft 16m 52ft Xtnd for the long pulse The C series acts like a LAN L in normal mode and a Long Range LR in extended mode 26 7 2 Applications and Results Typical applications and expected results for the short pulse are as follows e The short pulse takes approximately 1 4 second to update a 256 average RealTime scan and up to 1 minute for up to 65K average scan e Minor events can be measured using the short pulse and the scanning mode to reduce the noise seen on the fiber backscatter e Long Range LR units and C series Xtnd mode e When measuring down to 10m 83ft events can be detected within 2m 6ft e When measuring up to 4Km 13Kft events can be detected within approximately 0 7m Km 2ft Kft e Short pulse will not work properly with fi
20. l execute the com mand immediately above the key de pendent on operational mode as ex plained below The currently selected function is highlighted 11 When in the cursor mode F1 F2 F3 ZOOM 1 x depressing this key enables the user to expand around the current cursor selected The ex pansions available on the vertical loss scale are 4dB 2dB 1dB and 0 5dB division Depending on pulse width and extended or normal distance selection the expansions available on the horizontal distance scale are 16Km 8Km 4Km 2Km 1Km 500m 250m 125m 64m or 32m div or corresponding expansions in Kilofeet Subsequent key presses expand to the next level than back to 4dB amp 16Km division CURSOR B depressing this key allows selection and expansion around the B or Acursor The left and right arrow keys then control the location of the se lected cursor and the zoom key controls expansion around that cursor MENU 1 depressing this key advances the instru ment through the soft key menus Hit the key once to advance to Menu 2 the pulse width and average modes When in the pulse width and average modes F1 F2 F3 Long PW depressing this key toggles between 4m 13 ft short pulse 50m 164ft medium pulse C or LAN versions and 100m 328 ft long pulse C or Long Range versions 12 Real Time depressing this key toggles between the 256 average real time mode 1 4 second and the 65K average scanning mode up to
21. link analysis of total distance 2 point loss and dB Km loss will be displayed at the table bottom See fig 5 3 for a functional description of the Event Table e Note When examining events be aware that each event has a subsequent dead zone that will hide following events for a short period approximately 8 points for a non saturating reflection or approximately 16 points for a saturating reflection or loss In the short medium and long pulses each point is 1 4 and 16 meters respectively 2 8 and 32 meters for extended mode Note Auto event analysis provides approximate loss and distance measurements to quickly assist in network evaluation Automatic detection results are not guaranteed and have their limits possibly causing erroneous readings or detection failure User interaction by interfacing with the trace display is recommended for final qualitative and quantitative analysis MENU 5 depressing this key again returns the instrument to Menu 1 the cursor mode 19 5 2 Functional Description of Display Cursor Distance Measurements Fiber Trace of Loss vs Distance Cursor Loss Measurements Index of Refraction and 2 point splice loss or dB Km_ Pulse Widths Scanning Indicator Wavelength Averaging Mode Vertical Scale Battery Gauge Horizontal Scale Dual Adjustable Soft Keys Cursors 20 5 3 Functional Description of Event Table re 4 Localized Lossin Type of event er Event a Loss fr
22. n After selecting the function with the first Store key depression use the left and right arrow keys to select the storage location digit then the up and down arrow keys to increase or decrease the storage loca tion 1 2 3 255 1 In V2 1 or greater hold the up down keys for 1 second to change the 10 units and 3 seconds to change the 100 units Each subse quent depression of the Store key will save the cur rent trace data into that storage location then auto increment the counter to the next location Press the Escape or Menu key to exit this feature Example If the Store SoftKey displays 145 when you depress the Store Key the trace will be stored to position 145 then_the displayed number will incre ment to now read 146 Recall depressing this key recalls the trace and data information from the displayed storage location After the first Recall key depression use the left and right arrow keys to select the storage location digit then the up and down arrow keys to increase or decrease the storage location 1 2 3 255 1 14 In V2 1 or greater hold the up down keys for 1 second to change the 10 units and 3 seconds to change the 100 units Each subsequent depression of the Recall key will recall the current storage location and display the trace and data information then auto increment the counter to the next location Press the Escape or Menu key to exit this feature Example If the Recall SoftKey
23. nge Fiber Connector Type Data acquisition Method Data Storage Computer Interface Power Size Weight C Series 4m 13ft SP 50m 166ft MP 100m 330ft LP 1m 3ft SP 2m 6ft XSP 4m 13ft MP 8m 25ft XMP 16m 50ft LP 32m 105ft XLP 1Km 3Kft SP 4Km 13 Kft XSP 4Km 13Kft MP 16Km SOKft XMP 16Km S50Kft LP 64Km 215Kft XLP 256 128 64 32m div SP 1K 512 256 128 XSP 1K 512 256 128mm div MP 4K 1K 512 256 XMP 4K 1K 512 256m div LP 16K 8K 4K 2K XLP 850nm 1300nm 1310nm 1490nm 1550nm 20nm device dependent 23dB Typical LP 6m 20 ft Typical SP 1 4 Second Real Time up to 1 Minute Scanning 0 5 1 2 4 dB div 0 01dB 1 024 2 048 SingleMode FC UPC Multimode ST N Point Averager 255 traces RS 232 8 NiMH AA batteries or 12V Charger 110 or 220VAC 7 0 x 4 5 x 3 0 2 0lbs Handheld 8 25 x 6 5 x 3 5 2 75lbs Ruggedized SP Short Pulse LP Long Pulse X Extended Mode 32 10 2 Service and Repair For service or repair follow the procedure below 1 Call Wilcom Customer Service Support personnel will determine if the equipment requires service repair or calibration 2 If the equipment must be returned to Wilcom for service Wilcom Customer Service will issue a Return Material Authorization RMA number and the following address for return Wilcom 73 Daniel Webster Highway Belmont NH 03220 TEL 800 222 1898 USA only or 603 524 2
24. om dB Km lt i a a i revious event Saturate Distance p E Possible End Sensitivity Link Results Possible Sensitivity Toggle Trace End Cutoff amp Event Table 21 6 0 6 1 Maintenance Battery Replacement In the event the batteries fail to retain a sufficient charge and need to be replaced contact the factory for service If you wish to replace the batteries in the field extreme care must be taken not to damage the internal fibers flex strip wiring or the instru ment electronics This damage will void the war ranty At all times protect the fiber connector and in ternal instrument from adverse environmental con ditions Replace the batteries with 8 NiMH AA cell 2500 mA hour batteries Energizer or equivalent The batter ies are accessible via 2 sliding latched covers inside the unit This requires removal of the front panel and circuit board pack from the ruggedized case To re move the front panel turn power off and disconnect all electrical and fiber cords Remove the 4 knurled knobs and their fiber washers from the front panel pull the front panel out gently taking care not to dam age the internal fiber or electrical cords Remove the screws from the 2 black plastic battery covers on the back of the circuit board pack then slide the covers off Replace the batteries taking care to install them properly as depicted in the battery holder diagrams Replace the battery covers and screws Very care
25. oth the LAN L and Long Range LR distance and resolution selections For a quick start refer to section 5 1 page 8 or the Quick Reference card inside the cover 2 0 2 1 2 2 2 3 Preparation for Use Inspection Before shipment this instrument has been inspected and found to be in perfect working order and free of defects The shipping carton should contain the following 1 Mini OTDR configured as ordered with 8 AA NiMH Batteries installed 2 AC DC Charger 3 RS232 mini stereo jack to RJ11 modular cord Printer adaptor PC adaptor 4 Users Manual Instrument Identification Configuration The instrument s Model Part Number Serial Num ber Date of Manufacture and Configuration are indi cated on a label located inside the cover of the unit The instrument s history is filed at the factory by part number and serial number Power Requirements The instrument is equipped with an AC DC charger which recharges the unit s internal NiMH batteries 8 AA 2500mA hours Depending on usage this will typically enable 10 to 12 hours use with a fresh fully charged battery pack Typical recharge time is 6 8 hours The AC DC adapter which is ordered sepa rately can be either a 110VAC to 12VDC 800mA tip positive or 220VAC to 12VDC 800mA tip posi tive customer specified Installation of other batter ies may cause instrumentation damage and will void the warranty 4 2 4 If batteries are installed that a
26. re dead or less than 1 volt each then charge these batteries for one 1 hour before using the mini OTDR WARNING To Prevent Fire or Shock Hazard Do not install other battery types Do not use the AC adapter without the batteries installed Do not expose the AC adapter to rain or excessive moisture Do not use the AC adapter when there are signs of damage to the enclosure or cord Ensure that you are using the correct adapter for the local line voltage Do not use any other adapter than the one provided with this instrument Any other condition will void your war ranty Unit Configuration See the label inside the cover for the unit configuration Figure 2 1 contains a front view of the unit Front View of Mini OTDR figure 2 1 3 0 3 1 3 2 Cautions Batteries This unit is equipped with and has been designed to use NiMH rechargeable batteries Replace batter ies only with Nickel Metal Hydride Rechargeable batteries Do not use the charger if the supplied NiMH batteries are replaced with Alkaline or another bat tery type Installation of alkaline batteries may cause instrumentation damage and will void the warranty WARNING Do not use the AC adapter without the batteries installed If installed batteries are dead or less than 1 volt each charge these batteries for one 1 hour before ener gizing the Mini OTDR Laser Safety The Mini OTDR has been configured with laser di odes having central wavelengths o
27. series Normal mode When measuring greater than 100m 330ft and up to 4Km 13Kft events can be detected within 4m 13ft 16m 52ft Xtnd For LAN L units long pulse will not work properly over 16Km 53Kft use Extended mode for up to 64Km 215K ft of fiber For longer lengths of fiber gt 64Km 215Kft use the Long Range LR or C series Mini OTDR When measuring up to 16Km 53Kft events can be detected to within approximately 0 7m per Km 0 7ft Kft 28 8 0 Troubleshooting Symptom Possible Cause LCD display blank Power not on Batteries require recharging Batteries are missing in backwards or need replacement Instrument locked up Unexpected Operational Mode Initial Defective cord or dirty connector Backscatter low Fiber Output port requires cleaning Angle polish mated with UPC polish Extra or ghost Fiber too long for short pulse reflections on Fiber over 64Km 200Kft backscatter Long Range Extra or ghost Fiber too long for short pulse reflections on Fiber over 16Km 53Kft backscatter LAN Extra or ghost Fiber too long for short pulse reflections on Fiber over 16Km 53Kft backscatter C series Fiber over 64Km 200Kft RS232 hookup to PC Baud rate not set properly not functioning properly or to fast for computer 29 Solution Press ONOFF key Recharge batteries Check battery polarity replace batteries or contact factory for servicing Remove inpu
28. t loss method takes the 2 Point loss in dB and divides by the distance between the cursors in Meters Kilofeet For accurate dB Km loss measurements the two cursors must be on level backscatter points at least 256m apart NA will show for distances that are too short Splice loss method takes the loss around cursor A or B chosen by the F2 key in the Cursor Menu 1 Set ting the cursor at the beginning of an event such as a reflection the Metro unit and A series Xtnd mode takes the average of the past 256 meters Long pulse 64 meters Short pulse before the cursor The unit then skips 256 meters 64 meters Short pulse over the event then averages the next 256 meters 64 meters Short pulse to subtract from the first aver age The loss between these regions is adjusted for 512 meters 128 meters Short pulse of typical fiber loss The LAN unit and A series Normal mode takes the average of the past 128m 420ft XM mode 32m 105ft Long pulse 8m 26ft Short pulse before the cursor The unit then skips 128m 420 ft Long pulse 16 32m 105ft Short pulse over the event then aver ages the next 128m 420ft 82m 105ft Long pulse 8m 26ft Short pulse to subtract from the first average The loss between these regions is adjusted for 256m 840ft 160m 525ft Long pulse 40m 1 30ft Short pulse of typical fiber loss For accurate Splice Loss mea surements the averaged areas before and after the splice must be level backscatter reg
29. t power amp a battery for 30 seconds to reset instrument Replace or clean cord Clean port Examine connector ends Switch to Long pulse if gt 16Km Switch to Xtnd Mode if gt 64Km Switch to Long pulse if gt 8Km Switch to Xtnd Mode if gt 16Km Switch to Med pulse if gt 8Km Switch to Long pulse if gt 16Km Switch to Xtnd Mode if gt 64Km Set baud rate properly or decrease Baud rate to 57K 9 0 Instrument Specifications LAN Version note specifications subject to change without notice Pulse widths Distance interval Distance Range Horizontal Expansion Wavelength of operation Dynamic Range Dead Zone Averaging Time Vertical Expansion Vertical Resolution Group IOR Range Fiber Connector Type Data acquisition Method Data Storage Computer Interface Power Size Weight LAN L 4m 13 ft SP 50m 166ft LP 1m 3ft SP 4m 13ft LP 16m 50ft XM 1Km 3Kft SP 4Km 13Kft LP 16Km 50Kft XM 256 128 64 32m div SP 1K 512 256 128m div LP 4K 1K 512 256m div XM 850nm 1300nm 1310nm 1490nm 1550nm 20nm device dependent 23dB Typical LP 6m 20 ft Typical SP 1 4 Second Real Time up to 1 Minute Scanning 0 5 1 2 4 dB div 0 01dB 1 024 2 048 SingleMode FC UPC Multimode ST N Point Averager 255 traces RS 232 8 NiMH AA batteries or 12V Charger 110 or 220VAC 7 0 x 4 5 x 3 0 2 0lbs Handheld 8 25 x 6 5 x 3 5 2 75lbs Ruggedized SP Short Pulse
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