Userguide Ethernet
Contents
1. D LEME Replacing the Copper Cable If for any reason the electrical cable needs to be exchanged the following describes the cable replacement process Unscrew the collet nut attached to the strain relief using a size 15 mm A F spanner Unscrew the extender nut using the same spanner 2 small half shells will come free and the wires will become exposed Remove the copper wires from the solder buckets using a soldering iron Remove from the old cable all the remaining items the dome shaped ring the o seal the v shaped ring the col let the extender nut the collet nut and the strain relief boot Place on the new cable in the following order the strain relief boot the collet nut the collet the extender nut the v shaped ring the o seal and the dome shaped ring Strip back the cable jacket to the length of the half shells plus an additional 2 to 3 mm Flay out the braid and using the dome shaped ring as a guide cut the braid to the same diameter as the ring Strip the ends of the copper wires and solder them to the solder buckets on the media converter Ensure that the TP IN and share a twisted pair and the TP OUT and share a twisted pair Place the 2 half shells around the solder joints and hold in place by screwing on the extender nut Tighten the extender nut with the spanner and slide all remaining parts down the cable towards the media converter Tighten the collet nut on the extender nut with a spa2. LEMO 10 100BaseT ETHERNET MEDIA CONVERTER User Manual D LEME This document defines the process of correctly connecting the Ethernet M C Media Converter to a reel of fibre optic cable The operation of the Ethernet M C system is also explained The electrical pin out has been included to allow easy replacement of the electrical cable if required Presentation amp Warning The LEMO Ethernet to fibre media converter has been designed to ensure reliable conversion in harsh environments A pair of media converters enables the conversion of sig nals from Ethernet 100 BaseT copper networks to fibre optics and vice versa Using the converter allows the Ethernet signal to be trans mitted over a long distance without loss of quality The advantages are immunity to electro magnetic inter ference and increased security for sensitive information Warning CAUTION Class 1 Laser Product The Ethernet converter is classified as a CLASS 1 LASER PRODUCT Do not stare into the beam or view it directly with optical instruments Instructions for Mating LEMO Fibre Optic Connectors Cleaning Although we endeavour to make sure that all fibre optic product is clean before we send it there is always a chance that some particle contamination may occur during transit or upon removing the covering Before the optical interface is made when the connectors mate it is essential to ensure that both the ferrule end Assembly W
3. ble terminated with 3K fibre optic connectors LED Indicators There are 3 LED indicators on the M C Red Green and Blue The Blue LED indicates power The Green LED indicates an active 100BaseT Ethernet copper signal on the copper side The Red LED indicates an active 100BaseF Ethernet fibre optic signal on the fibre optic side 1 000 00 ANNAN NANNAN Constant blue light power is good UUUU HE a 000 Green light copper signal is good no fibre signal HANAN UUUU de 600 Red light fibre signal is good no copper signal When the system is functioning properly the Blue LED will remain on constantly the Green and Red LEDs will flash inter mittently with the passing of data packets Electrical Pin out The image opposite shows the electrical end of the M C or LEMO 1K plug end As you can see there are 6 contacts 2 for power and 4 for signal data Contacts 1 and 2 are for the power input 1 being the pos itive input and 2 being the negative Contacts 3 and 4 are the twisted pair carrying data into the M C 3 being positive and 4 being negative Contacts 5 and 6 are the twisted pair carrying signal data out of the M C 5 being positive and 6 being negative LEMO 1K plug end Ethernet electrical end Contact 1 5V Supply Contact 2 0V return Contact 3 TP IN Contact 4 TP IN Contact 5 TP OUT Contact 6 TP OUT www lemo com
4. hen satisfied that the fibre optic contacts are clean the assembly can take place Below is a picture of the fibre optic plug found on both ends of the fibre optic cable assembly faces in the cable connectors and in the Ethernet M C are clean from dirt dust etc A separate document included in the appendix has been included giving detailed instructions on the cleaning process for LEMO fibre optic contacts Both the fibre optic plug and the Ethernet M C have imprinted on them a red location dot In order for the two to mate the two red dots must be aligned Due to internal keying it is impossible to mate the fibre optic plug and the Ethernet M C in any rotation other than when the two red dots are in line When mating the fibre optic plug and the Ethernet M C together there will be some resistive force introduced by the latching mechanism inside the fibre optic plug and the o ring seal inside the Ethernet M C It is important that when mating the two shoulder of the fibre optic plug meets with the end of the Ethernet M C and that a noticeable clicking sound is heard showing that the latches are engaged www lemo com D LEME Operating Instructions Connections for Operation The M C Media Converter requires a 5Vdc supply to power the unit as well as a 100BaseTX Ethernet connection The M C has to be connected to another M C or to a 100Baser fibre optic Ethernet connection via a fibre optic ca
5. ies plug connectors is simpler as the contact endfaces are clearly visible from the front of the connector In this case follow the instructions for a socket style connector but omit the alignment sleeve removal and replacement steps Method A utilises the robust LEMO cleaning tool DCS 91 F23 LA which is designed more for the regular rou tine maintenance operative Method B is designed more for the occasional trouble shooting field operator as the tools used are smaller lighter and therefore easier to carry www lemo com SAL LEMI Method B 1 Working from the front of the connector screw one of the internally threaded ends of the LEMO cleaning tool DCS F2 035 PN onto one of the F2 alignment devices and with a firm pulling action remove it from the contact 2 Get ready a LEMO WST KI 125 34 Cleaning Kit of two cot ton buds 3 Peel open the backing foil from the blister pack to release the two cotton buds inside Select the alcohol moist ened bud 4 Clean the ceramic ferrule by applying the alcohol damped end of the cotton bud to the ferrule end face and gently wiping it across the endface 5 Select the dry cotton bud and using one end of it apply to the ferrule face and gently wipe across it This will thoroughly dry the ferrule Use a cotton bud end once only as they quickly become contaminated Refit the alignment device by positioning it over the fer rule and with a firm push engage it o
6. nner and ensure the strain relief boot is secure on the collet nut Attach the connector to the opposite end of the new cable using the instructions included with the connector Test the unit to confirm functionality Appendix Technical Specifications Characteristics Value I O connectors Electrical various fibre 3K 03A Fibre type Wavelength Single mode 9 125 um 1310 nm Package dimensions Mass 29 mm x 127 mm 169 mm with strain relief 140 grams Temperature range Electrical inputs 20 C to 85 C 10 100 BaseT Ethernet 5V supply 280mA LD optical output Photodiode sensitivity 200 uW 250 uW max 37 to 5 dBm Data rate 125 Mbps Max Transmission distance above 20 km MTBF 1 6 x 10 hours www lemo com D LEME B and K Series Cleaning Instructions It is essential for the ferrule endfaces of the LEMO F2 con tacts to be clean and free from any kind of debris in order to ensure the correct performance and operation of the system It is strongly recommended that the ferrule endfaces are reg ularly inspected in situ using a commercially available video inspection microscope e g Noyes Aerotech Westover Exfo Lightel Diamond or similar fitted with a 2 mm ferrule adap tor suitable for the LEMO F2 fibre optic contact Pho tographs of what constitutes a clean undamaged endface can be found in the LEMO General and G
7. nto the ferrule body with an audible click then unscrew the tool Technical support We understand you may have questions regarding your Europe email mc_europe lemo com new product Should you require any assistance our Europe telephone 0044 0 1903 222411 technical support and customer service is available to you Whenever calling your LEMO support you will need USA email mc_usa lemo com to refer to the part numbers located on the top the USA telephone 1 707 578 88 11 ETHERNET unit Asia Pacific email mc_asia lemo com Japan telephone 81 3 5446 5510 China telephone 86 21 5899 7721 LEMO Heaoquarters SWITZERLAND LEMO SA Chemin des Champs Courbes 28 P O Box 194 CH 1024 Ecublens Tel 41 21 695 16 00 Fax 41 21 695 16 02 e mail info lemo com DOC ME 3KA 000 CHF 1 50 EURO 1 USD 1 1 RMB 10 Data subject to change printed in Switzerland October 2007 Updated November 2012
8. uidance document SQL 04 025E In general use if after mating a connector pair an unexpectedly high insertion loss is encountered which results in the sys tem not operating then all suspect fibre optic ferrule end faces should be cleaned using S grade Isopropyl Alcohol IPA and the ferrules thoroughly dried before re trying the system Method A 1 Working from the front of the connector screw the inter nally threaded end of the LEMO cleaning tool DCS 91 F23 LA onto one of the F2 alignment devices and with a firm pulling action remove it from the contact 2 Unscrew the endcap from the tool and remove a new cot ton bud 3 Moisten one end of the cotton bud by pressing it into the sponge containing S grade Isopropyl Alcohol 4 Clean the ceramic ferrule by applying the alcohol damped end of the cotton bud to the ferrule end face and gently wiping it across the endface 5 Using the dry end of the lint free cotton bud apply to the ferrule face and gently wipe across it This will thor oughly dry the ferrule Use a cotton bud end once only as they quickly become contaminated Refit the alignment device by positioning it over the fer rule and with a firm push engage it onto the ferrule body with an audible click then unscrew the tool Two methods are shown below which detail the cleaning procedure for contacts in B or K series socket style connectors Inspection and cleaning of the ferrules in B or K ser
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