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Black Box LH1500 Media Converters

Installation and User Guide (08/05)

1.2 Model Number

Description

LH1500A-SC-R3

Twisted pair to mm fiber SC, ext. 115 vac, 60Hz power supply

LH1500AE-SC-R3

Twisted pair to mm fiber SC, ext. 230 vac, 50Hz power supply

LH1500A-ST-R3

Twisted pair to mm fiber ST, ext. 115 vac, 60Hz power supply

LH1500AE-ST-R3

Twisted pair to mm fiber ST, ext. 230 vac, 50Hz power supply

Single-mode:
LH1501A-R3

Twisted pair to fiber SC, single mode, ext. 115 vac, 60 Hz PS

LH1501AE-R3

Twisted pair to fiber SC, single mode, ext. 230 vac, 50 Hz PS

6

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Summary of Contents for LBH1500A

Page 1: ...ly 2005 LBH1500A R3 Black Box LH1500 LBH1500AE R3 LBH1501A R3 LBH1501AE R Fast Ethernet Media Converters Media Converter 100 Mb s LINK PWR LINK RX TX BLACK BOX Crossover 724 746 5500 Media Converter 100 Mb s LINK PWR LINK RX TX BLACK BOX Crossover 724 746 5500 All manuals and user guides at all guides com a l l g u i d e s c o m ...

Page 2: ... applied for and registered trademarks are the property of their respective owners Important Black Box LH1500 Media Converters contain no user serviceable parts Attempted service by unauthorized personnel shall render any and all warranties null and void If problems are experienced with a Black Box LH1500 Media Converter consult Section 5 Troubleshooting of this User Guide 2005 Black Box Corporati...

Page 3: ...and User Guide 08 05 Contacting Black Box Please use the mailing address and phone and fax numbers listed below Black Box Corporation P O Box 12800 Pittsburgh PA 15241 Phone 724 746 5500 Fax 724 746 0746 All manuals and user guides at all guides com ...

Page 4: ...puting device in accordance with the specifications in Subpart J of Part 15 of FCC rules which are designed to provide reasonable protection against such interference when the equipment is operated in a commercial environment Operation of this equipment in a residential area is likely to cause interference in which case the user at his own expense will be required to take whatever measures may be ...

Page 5: ...ites dans le Règlement sur le brouillage radioélectrique publé par le ministère des Communications du Canada __________________________________________________________ NORMAS OFICIALES MEXICANAS NOM ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD 1 Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado 2 Las instrucciones de segurid...

Page 6: ...do a personal de servicio calificado 9 El aparato eléctrico debe ser situado de tal mannera que su posición no interfiera su uso La colocación del aparato eléctrico sobre una cama sofá alfombra o superficie similar puede bloquea la ventilación no se debe colocar en libreros o gabinetes que impidan el flujo de aire por los orificios de ventilación 10 El equipo eléctrico deber ser situado fuera del ...

Page 7: ...las lineas de energia 16 El cable de corriente deberá ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo 17 Cuidado debe ser tomado de tal manera que objectos liquidos no sean derramados sobre la cubierta u orificios de ventilación 18 Servicio por personal calificado deberá ser provisto cuando A El cable de poder o el contacto ha sido dañado u B Objectos han caído o ...

Page 8: ...7 2 2 Product Description 9 2 3 Features and Benefits 13 2 4 Applications 15 3 0 INSTALLATION 18 3 1 Locating the Media Converter Unit 18 3 2 Calculating Overall Segment Distance 19 3 2 1 Segment Distances Full Duplex 19 3 2 2 Segment Distances Half Duplex 24 3 3 Connecting Fast Ethernet Media 33 3 3 1 Connecting Twisted Pair RJ 45 TX 33 3 3 2 Connecting Fiber FX SC type Snap In and ST Twist Lock ...

Page 9: ...el LEDs Black Box LH1500 s 40 4 3 Up Link Switch on TX port 40 5 0 TROUBLESHOOTING 42 5 1 Before Calling for Assistance 42 5 2 When Calling for Assistance 44 5 4 Shipping and Packaging Information 45 Changed in this revision 08 05 Added Power Budget Calculation for Fiber media 05 99 changed power supplies from a single model to separate models each for 115vac 60Hz and 230vac 50Hz All manuals and u...

Page 10: ...100 Mb s Half or Full Duplex auto sensing 800ns 80 bit times Path Delay Value PDV for conversion delay Network Standards Fast Ethernet IEEE 802 3u 100BASE TX 100BASE FX Black Box LH1500 Media Converters are physical layer standard Fast Ethernet products and operate independently of all software All manuals and user guides at all guides com ...

Page 11: ...wisted pair 100 m 328 ft 100BASE FX Fiber optic half duplex multi mode 412 m 1350 ft 100BASE FX Fiber optic full duplex multi mode 2 0 km 6 562 ft 100BASE FX Fiber optic half duplex single mode 412 m 1350 ft 100BASE FX Fiber optic full duplex single mode 15 0 km 49 215 ft Note Black Box LH1500 Media Converters DO NOT support full length shared Fast Ethernet segments See Section 3 2 of this manual ...

Page 12: ...sing Power Supply External Power Input 95 125 vac at 60Hz for LH1500A SC R2 LH1500A ST R2 LH1501A R2 Models 200 250 vac at 50Hz or auto ranging for LH1500AE SC R2 LH1500AE ST R2 LH1501AE R2 Models Power Consumption 5 watts max for the unit Power output 5VDC 1000ma DO NOT USE A 12VDC P S UNIT Connectors RJ 45 Port Modular 8 Pin female with MDI X up link switch Multi mode All manuals and user guides...

Page 13: ...ptic multi mode 100BASE FX Single mode Fiber Port SC type snap in Fiber optic single mode 100BASE FX Packaging Enclosure High strength sheet metal Dimensions 3 0 in H x 3 5 in W x 1 0 in D 7 6 cm x 8 9 cm x 2 5 cm Power Supply 3 8 in x 1 5 in x 2 in 9 7 cm x 3 8 cm x 5 1 cm Weight 9 5 oz 275 gr Power Supply 5 85 oz 166 gr All manuals and user guides at all guides com ...

Page 14: ...receiving DC power LINK TP Fiber Steady ON when proper link is established at both ends of the media segment i e when both end s connections are properly made and when power is applied to the devices on both ends of the segment Agency Approvals Power Supply is UL Listed UL 1310 cUL Emissions Meets FCC Part 15 Class A cUL Made in USA All manuals and user guides at all guides com ...

Page 15: ...pair to mm fiber SC ext 230 vac 50Hz power supply LH1500A ST R3 Twisted pair to mm fiber ST ext 115 vac 60Hz power supply LH1500AE ST R3 Twisted pair to mm fiber ST ext 230 vac 50Hz power supply Single mode LH1501A R3 Twisted pair to fiber SC single mode ext 115 vac 60 Hz PS LH1501AE R3 Twisted pair to fiber SC single mode ext 230 vac 50 Hz PS 6 All manuals and user guides at all guides com ...

Page 16: ...g container for obvious damage prior to installing this product notify the carrier of any damage which you believe occurred during shipment or delivery Inspect the contents of this package for any signs of damage and ensure that the items listed below are included This package should contain 1 Black Box LH1500 Media Converter unit 1 External Power Supply either 115 vac at 60Hz or 230 vac at 50Hz C...

Page 17: ...e sure to keep the shipping container should you need to ship the unit at a later date In the event there are items missing or damaged contact your supplier If you need to return the unit use the original shipping container Refer to Section 5 Troubleshooting for specific return procedures Use the power supply provided which has output at 5VDC only USE OF A 12VDC POWER SUPPLY WILL DAMAGE THE UNIT 8...

Page 18: ...mpact cost effective way to adapt a pre existing Ethernet cabling configuration as network requirements change Black Box LH1500 Media Converters are designed for quick and easy installation even in very tight spaces Media cables are easily attached Black Box LH1500 Media Converters feature an up link switch on the TX port to eliminate the need for a special cross over cable when connecting the TX ...

Page 19: ... provide low temperature operation over an extended period to make them some of the most reliable in the industry Their high strength fabricated metal packaging shields against Radio Frequency Interference RFI and Electromagnetic Interference EMI avoiding interference with other nearby electronic devices The Black Box LH1500 units comply with the IEEE 802 3u 100BASE TX and 100BASE FX specification...

Page 20: ...one RJ 45 connector for connection to 100BASE FX compliant networks segments An LH1500A ST R2 integrates 100BASE TX and FX networks with fiber ST connectors Twisted Pair 100BASE TX Fiber Multimode ST type LINK LINK PWR Black Box LH1500 Media Converter 100 Mb s UP LINK 100BASE FX 11 All manuals and user guides at all guides com ...

Page 21: ...45 connector for connection to 100BASE FX compliant networks segments Twisted Pair 100BASE TX Fiber SC type LINK LINK PWR Black Box LH1500 Media Converter 100 Mb s UP LINK 100BASE FX An LH1500A SC R2 integrates 100BASE TX and FX networks with fiber SC connectors 12 All manuals and user guides at all guides com a l l g u i d e s c o m ...

Page 22: ...500s can be used in full duplex fiber segments for distances up to 2Km for the multi mode model and up to 15Km for single mode model Low PDV for Maximum Cable Lengths in Shared Segments Black Box LH1500 Media Converters add signal timing delays of only 80 Bit Times in a shared half duplex segment less than a Class II Fast Ethernet Repeater 90 to 95 BT typical and can be used to attach fiber cable ...

Page 23: ...minimal space on horizontal or vertical surfaces Full Complement of LEDs Each LH1500 Media Converter is equipped with a full complement of LEDs to provide network LINK status on each port separately and to indicate power on the unit Highly Reliable and Dependable Black Box LH1500 Media Converters are based on a robust design and packaged in a metal enclosures to ensure high reliability and durabil...

Page 24: ...here full duplex fiber segments of up to 2Km for multi mode or 15Km for single mode are needed to interconnect them with other 100Mb switching hubs in distant wiring closets Alternatively a server with a full duplex NIC needs to be connected via fiber to a 100Mb switching hub with RJ 45 ports In these and similar situations the Black Box LH1500 conveniently converts the twisted pair cable to fiber...

Page 25: ...9 10 13 14 15 16 17 18 19 20 21 22 11 12 23 24 T LINK LINK PW R Media Converter 100 Mb s T LINK LINK PWR Media Converter 100 Mb s LH1500 100 BASE TX wiring segment UP LINK UP LINK 100 BASE TX wiring segment 100 BASE FX wiring segment Where shared Fast Ethernet segments are used such as with Fast Ethernet hubs with RJ 45 ports it may be desirable to connect one or more servers or users via fiber Al...

Page 26: ...0 provides connectivity to server LH1500 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 100 BASE TX wiring segment GARRET T LINK LINK PWR Black Box Media Converter 100 Mb s UP LINK 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 100 BASE FX wi...

Page 27: ... of the Black Box LH1500 Media Converter allows it to be easily installed in most any location A Velcro strip and a set of two metal clips and screws are included either may be used for mounting the unit on a vertical surface such as a wall or cabinet or for securing the unit on a table top or shelf The installation location is dependent upon the physical layout of the Ethernet network and the cab...

Page 28: ...and for half duplex standard Fast Ethernet installations Each of these situations are covered below in a separate section 3 2 1 Segment Distances Full duplex Full duplex ports such as are found in switching hubs and some NICs can receive and transmit signals simultaneously and do not experience collisions accordingly There may be only two nodes present on a full duplex segment Media distance rules...

Page 29: ...erall segment length of both of the attached media types The overall segment length is calculated by adding together the segment lengths on both sides of the Black Box LH1500 Media Converters The figure below illustrates how a Black Box Media Converter is used to connect a multi mode fiber 100BASE FX with a twisted pair 100BASE T segment Segment length on each side of the LH1500 Media Converter is...

Page 30: ...egment distance on one side of the Black Box LH1500 Media Converter divided by the Standard Maximum Media Distance for that media type x 100 Where Y The segment length on the other side of the Black Box LH1500 Media Converter divided by the Standard Maximum Media Distance for that media cabling type x 100 All manuals and user guides at all guides com ...

Page 31: ...ivity between 100BASE TX and 100BASE FX Ethernet Media In the example figure shown above the length of fiber Segment X is 1500m 4920 ft This is 75 of the maximum allowable distance for multi mode 100BASE FX fiber full duplex media 2000 m 75 2000 x 100 75 The length of twisted pair Segment Y is 10m 33 ft This is 10 of the maximum allowable distance for 22 All manuals and user guides at all guides c...

Page 32: ...the cabling lengths in the run must be added together and must not exceed 100 In another instance a Black Box Media Converter is used to connect a single mode fiber 100BASE FX with a twisted pair 100BASE T segment In this example the length of fiber Segment X is 8500m 27 880 ft This is 57 of the maximum allowable distance for single mode 100BASE FX fiber full duplex media 15 000 m 57 15 000 x 100 ...

Page 33: ...s in a traffic domain When a node attempts to send a packet it may hit another packet passing by i e a collision may occur This is normal and does not cause a problem because the Ethernet protocol provides for this situation and requires that the sender wait and try again When installing the Black Box LH1500 in a half duplex segment it is important to consider the collision domain of the segment i...

Page 34: ...er or repeaters such that no bridging or switching devices are present between any two nodes in the cluster A Black Box LH1500 has a PDV of about eighty Bit Times 80 BT and this value must be included in the overall collision domain diameter PDV calculations as applicable for the placement of the LH1500 in the topology of the collision domain Collision Domain Diameter The Collision Domain Diameter...

Page 35: ...hielded TP cable 1 112 Category 5 Cable 1 112 Category 4 Cable 1 140 Category 3 Cable 1 140 Worst case delays taken from IEEE Std 802 3u 1995 actual delays may be less for a particular cable Contact your cable supplier for exact cable specifications Each shared Fast Ethernet network device also has an associated BT delay Table 3 2 2b shows typical Fast Ethernet device components and the associated...

Page 36: ...epeater with any combination of TX and FX ports 92 Class II Repeater with T4 ports 67 Worst case delays taken from IEEE Std 802 3u 1995 To determine whether a prospective network topology adheres to the collision domain diameter specification the following formula should be applied to the worst case path through the network The worst case path is the path between the two Fast Ethernet devices DTEs...

Page 37: ...th Delay Value of the worst case path For the network to adhere to IEEE 802 3u standard this value must be less than 512 BT The safety margin is specified in BT and may be a value between 0 and 5 This margin can be used to accommodate unexpected delays such as an extra long patch cable A safety margin of at least 4 BT is recommended All manuals and user guides at all guides com ...

Page 38: ...00 uses about 80 meters of equivalent cable distance to convert from TX media to fiber FX media i e it consumes almost as much of the available PDV as a Class II repeater Since a 512BT collision domain will almost always include at least one repeater and two media segments the remaining amount of Bit Times left after allowing for a LH1500 and a length of fiber media indicates that the available fi...

Page 39: ...onnect two 100Mb hubs where the twisted pair cables to the user nodes are 10 meters in length The solution is 512 total available Bit Times in a collision domain diameter minus 100 BT for two DTEs on each end leaves 412 BTs minus 180 BT for two Class II repeaters leaves 232 BTs minus 20 BT for two 10 meter TP cables for hubs to users leaves 212 BTs minus 10 BT for two short TP cables from the hubs...

Page 40: ...iber in this case did not gain allowable maximum cable distance vs TP cable without the LH1500s Consider a more typical use of Black Box LH1500s in a shared Fast Ethernet segment A stack of Fast Ethernet hubs comprises the only repeater in the collision domain and the users and servers in the local workgroup are each connected via Category 5 twisted pair cable a maximum of 30 meters 100 ft in leng...

Page 41: ...12 BTs minus 90 BT for one Class II stackable repeater leaves 322 BTs minus 30 BT for one 30 meter TP cable from hub to user node leaves 292 BTs minus 5 BT for a short TP cable from the hub to 15E leaves 287 BTs minus 80 BT for one LH1500 leaves 207 BTs for fiber cable which indicates a fiber cable length of about 200 meters All manuals and user guides at all guides com a l l g u i d e s c o m ...

Page 42: ...he LEDs 3 3 1 Connecting Twisted Pair RJ 45 Unshielded or Shielded The following procedure describes how to connect a 100BASE TX twisted pair segment to the RJ 45 port on the Black Box LH1500 Media Converters The procedure is the same for both unshielded and shielded twisted pair segments 1 Using standard 100BASE TX media insert either end of the cable with an RJ 45 plug into the RJ 45 connector o...

Page 43: ... and is not defective 3 3 2 Connecting Fiber Optic 100BASE FX Type ST and SC The following procedure applies to 100BASE FX applications using the Black Box LH1500 Media Converter with ST type twist lock and SC type snap in fiber connectors 1 Before connecting the fiber optic cable remove the protective dust caps from the tips of the connectors on the Black Box LH1500 Save these dust caps for futur...

Page 44: ...and of the cable for this first Transmit to Receive connection 4 Connect the Receive RX port dark colored post on the LH1500 to the Transmit TX port of the remote device Use the non color coded fiber strand for this 5 The LINK LED corresponding to the fiber port on the front of the LH1500 will illuminate when a proper connection has been established at both ends and when power is ON in the unit If...

Page 45: ... min where PT Transmitter Output Power and PR Receiver Sensitivity Worst case OPB OPB 1dB for LED aging 1dB for insertion loss Worst case distance Worst case OPB in dB Cable Loss in dB Km where the Cable Loss for 62 5 125 and 50 125µm m m is 2 8 dB km and the Cable Loss for 100 140 multi mode is 3 3 dB km and the Cable Loss for 9 125 single mode is 0 5 dB km The following data has been collected f...

Page 46: ...5 0 4 1300 9 125 15 31 14 28 17 5 35 Note The use of either multi mode or single mode fiber to operate at 100Mbps speed over long distances i e over approx 400 meters can be achieved only if the following factors are both applied The 100Mb fiber segment must operate in full duplex FDX mode i e a switch or equal external unit such as a FDX NIC must be used and The worst case OPB of the fiber link m...

Page 47: ...al power supply unit supplied is one of two types one version AC input power auto ranging 115 vac at 60Hz for LH1500A SC R2 LH1500A ST R2 LH1501A R2 Models The 115 vac version has a small transformer integral with a convenience power outlet plug The 230 vac at 50Hz version for LH1500AE SC R2 LH1500AE ST R2 LH1501AE R2 Models The 230 vac version has a small transformer integral with an IEC type pow...

Page 48: ...occurs in the unit or remote device LINK Fiber port Illuminates GREEN to indicate proper connectivity on the 100BASE FX network segment LINK will turn off in the event connectivity is lost between the ends of the fiber segment or a loss of power occurs in the unit or remote device 4 3 Up Link Switch On TX port Black Box LH1500 Media Converters are equipped with an up link slide switch to accommoda...

Page 49: ... pair connection to a user device When set to the DOWN position X the Media Converter is wired with cross over functionality for direct up link to a network hub or concentrator 40 H1500 Up link Switch End view Black Box L up link user device All manuals and user guides at all guides com ...

Page 50: ...sure of any procedure described in this chapter or if the LH1500 Media Converter is not operating as expected do not attempt to repair or alter the unit Contact Black Box for assistance 5 1 Before Calling for Assistance 1 If you have difficulty installing or operating the LH1500 Media Converter refer to Chapters 3 and 4 Make sure that the various other components of the network are working All man...

Page 51: ...ower cord is properly plugged into the LH1500 Use the PWR LED to verify that the unit is receiving proper power 4 If the problem is isolated to a network device other than the LH1500 Media Converter replace the problem device with a known good device Verify whether or not the problem is corrected If it is not go to step 5 If the problem is corrected the Ethernet Media Converter and its associated ...

Page 52: ...ccurs c The components involved in the problem d Any particular application that when used appears to create the problem 2 An accurate list of BLACK BOX product model s involved with serial number s Include the date s that you purchased the products from BLACK BOX 3 It is useful to include other network equipment models and related hardware including Convenient computers workstations terminals and...

Page 53: ...ack to Black Box Corporation please follow these instructions 1 Package the unit carefully It is recommended that you use the original container if available Units should be wrapped in a bubble wrap plastic sheet or bag for shipping protection You may retain all connectors and this Installation Guide CAUTION Do not pack the unit in Styrofoam popcorn type packing material This material may cause el...

Page 54: ...ser Guide 08 05 45 3 Black Box Corporation is not responsible for your return shipping charges 4 Ship the package to Black Box Corporation 1000 Park Drive Lawrence PA 15055 Phone 724 746 5500 Fax 724 746 0746 All manuals and user guides at all guides com ...

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