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Black Box LBH1500A manual

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  • Page 1

    © Copyright 2005. Black Box Corporation. All r ights reserved. 1000 PARK DRIVE • LAW RENCE, PA 15055-1018 • 724- 746-5500 • FAX 724-746-0746 July 2005 LBH1500A-R3 Black Box LH1500 LBH1500AE-R3 LBH1501A-R3 LBH1501AE-R3 Fast Ethernet Media Converters Media Converter 100 Mb/s LINK P WR L INK RX TX BLA C K BO X Crossover (724) 746-5500 Media C o[...]

  • Page 2

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) Black Box LH1500 Media Converters Installation and User Guide Trademarks UL is a registered trademark of Underwriters Laboratories Ethernet is a trademark of Xerox Corporation All applied-for and registered trademarks are the property of their respective owners Important: Black[...]

  • Page 3

    Black Box LH1500 Media C onverters Installation and User Gui de (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[...]

  • Page 4

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) FCC STATEMENT FEDERAL COMMUNICATIONS COMMISSION & CANADIAN DEPARTMENT OF COMMUNICATIONS RADIO FREQUENCY INTERFERENCE STATEMENTS This equipment generates, uses, and can radiate radi o frequency ener gy and if not installed and used properly, that is, in strict acco rdance wi[...]

  • Page 5

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) This digital apparatus does not exceed the Class A limits for radio noise emission from digital apparatus set out in the Radio Interferen ce Regulation of the Canadian Department of Communications. Le présent appareil numérique n’émet pas de bruits radioélectriques dépas[...]

  • Page 6

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 4. Todas las instrucciones de oper ación y uso deben ser seguidas. 5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo, cer ca de la tina de baño, lavabo, sótano mojado o cerca de una alberca, etc. . 6. El aparato eléctrico debe ser usado úni camente[...]

  • Page 7

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 13. Los cables de la fuente de poder deben ser gui ados de tal m anera que no sean pisados ni pellizcados por objetos colocados sobre o cont ra ellos, poniendo particular atención a los contactos y receptáculos donde salen del aparato. 14. El equipo eléctrico debe ser lim pi[...]

  • Page 8

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) TABLE OF CONTENTS Page 1.0 SPECIFICATIONS .................................................................................... 1 1.1. Technical Speci fications *............................................................................ 1 1.2. Model numbers and pr oduct descri[...]

  • Page 9

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) TABLE OF CONTENTS (CONTINUED) Page 3.3.3 Power Budget Calculati ons for Fiber media * .................................. 37 4.0 OPERATION ........................................................................................... 39 4.1 Power requirements, power supply types * [...]

  • Page 10

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 1 1.0 SPECIFICATIONS 1.1. Technical Specifications Performance: Data Rate: 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 C[...]

  • Page 11

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 2 Number of Media Converters in series: Experience shows that up to three units can be used in series between repeaters. For 4 or more in series , noise build-up will typically preclude proper operation. Maximum Standard Fast Eth ernet Segment Lengths: 100BASE-TX (twisted pair)[...]

  • Page 12

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 3 Operating Environment: Am bient Temperature: 32 º F to 122 º F (0 º C to 50 º C) Storage Temperature: -20 º C to 60 º C Am bient Relative Humi dity: 10% to 95% (non-condensi ng) Power Supply (Exter nal): Power Input: 95-125 vac at 60Hz for “LH1500A-SC-R2, LH1500A-ST- [...]

  • Page 13

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 4 Fiber Port, SC-type (snap-in): Fiber optic multi-mode, 100BASE-FX Fiber Port, ST-type (twist-lock): Fiber optic 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: [...]

  • Page 14

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 5 LED Indicators for the Black Box LH1500’s and LH1501’s: LED TX port FX port Description PWR Indicates unit is 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 ma[...]

  • Page 15

    Black Box LH1500 Media C onverters Installation and User Gui de (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 [...]

  • Page 16

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 7 2.0 INTRODUCTION This section describes the Black Box LH1500’s and LH1501’s Media Converters, including appearance, features and possible applications. 2.1 Inspecting the Package and Product Examine the shipping container for obvious damage prior to installing this produc[...]

  • Page 17

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 1 Set of two (2) metal mounting clips with screws 1 Velcro ® Tape section, approximately 3 inches in length Remove the Black Box LH1500 Media C onverter from the shipping container. Be sure to keep the shipping container should y ou need to ship the unit at a later date. In th[...]

  • Page 18

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 9 2.2 Product Descr iption Black Box LH1500 Media Converters offer a convenient and graceful way to convert and transmit data among twisted pair and fiber network cabling environments. They allow the use of fiber media with fu ll-duplex devices such as Fast Ethernet Switching H[...]

  • Page 19

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 10 nearby AC wall socket or power strip. Each converter features a full set of LEDs that convey essential diagnostic and status informa tion. See Section 4.1, LED Indicators, for specific LED function information. Black Box LH1500 Media Converters are designed to provide low-te[...]

  • Page 20

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) The Black Box LH1500A-ST is equipped with one fiber-ST and one RJ-45 connector for connection to 100BASE- FX compliant networks segments. An LH1500A-ST-R2 integrates 100BASE-TX and FX networks, w ith fiber ST connectors. Twisted Pair (100BA SE-TX) F ibe r M u ltim o de (S T-typ[...]

  • Page 21

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) The Black Box LH1500A-SC is equipped with one fiber-SC and one RJ-45 connector for connection to 100BASE- FX compliant networks segments. Twisted Pa ir (100BASE-TX) Fi ber (SC-typ e ) LIN K LINK PWR Black Box LH1500 Media Conver ter 100 M b/s UP L INK (100BASE-FX) An LH1500A-SC[...]

  • Page 22

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 13 2.3 Features and Benefits  Reduces Network Costs Black Box LH1500 Media Converters offer an ideal solution to quickly and inexpensively connect Twisted-Pa ir TX with Fiber FX segments.  Full-duplex or Half-duplex operation, auto-sensing LH1500s can be used in full-dupl[...]

  • Page 23

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 14  Small, Compact, Lightweight Design Featuring a compact and lightweight metal case with an external power supply, Black Box LH1500 Media Converters can be conveniently installed in minimal space, on horizontal or vertical surfaces .  Full Complement of LEDs. Each LH150[...]

  • Page 24

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 15 2.4 Applications The primary function of Black Box LH 1500 Media Converter is to permit two different media types to coexist within th e same network by allowing data to be transmitted and received between different media types. Black Box 1500s are typically used where new 1[...]

  • Page 25

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 16 ed ed 100Mb hu bs via fiber. 00 Two B lack Box L H 1500s provide conne ctivity for switch ch LH15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 7 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8 9 10 13 14 15 1 6 17 18 19 20 21 2 2 11 12 23 2 4 T LINK LINK PWR Media Converter 100 Mb/s T LINK[...]

  • Page 26

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) cable. It is necessary to calculate the PDV of the overall collision domain (see Section 3.2.2) for proper operation when the LH1500 is used in shared half-duplex applications. 17 s or users via fiber. Black Bo x LH 1500 prov ide s con nectivity to server LH1500 1 2 3 4 5 6 7 8[...]

  • Page 27

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 3.0 INSTALLATION This section describes the installation of the Black Box LH1500 Media Converters, including location, segment di stance calculation and media connection. 3.1 Locating the Media Converter Unit The compact and lightweight design of the Black Box LH1500 Media Conv[...]

  • Page 28

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 19 Make sure the unit is installed in a locati on that is easily accessible to an AC power outlet or power strip, and where convection cooling is not inhibited. 3.2 Calculating Segment Distances The media distance considerations are quite different for full-duplex and for half-[...]

  • Page 29

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 20 limitations are not a factor. Specifically, fiber segments can be up to 2Km for m ulti- mode and up to 15Km for single mode. The Black Box LH1500, with full-duplex ope ration as a standard feature, can be used in these applicati ons. When installing the Black Box LH1500 in a[...]

  • Page 30

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 21 Media Distance Formula for Black Box LH1500’s, full-duplex : X% + Y% < 100% Where X = The segment distance on one side of the Black Box LH1500 Media Converter divided by the Standard Maximum Media Distance for that media ty pe, x 100% Where Y = The segment length on the[...]

  • Page 31

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) Twisted Pair (100BASE-TX) Fiber Multimode (100BASE-FX) L I N K LINK PWR Bl ack Box M ed ia C onve rter 100 Mb/s UP LI NK Segment Y 10m (33ft) Segment X 1500m (4920ft ) Connectivity between 100BASE-TX and 100BASE-FX Ethernet Media. In the example figure shown above, th e length [...]

  • Page 32

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 23 100BASE-TX full-duplex twisted-pair media (100 m) [10/100 x 100% = 10%]. The total of the two percentages (75% + 10%) is 85%, which is allowable. Note 1 : Where more than one media converter is used in one segment run, the percentages for a ll of the cabling lengths in the r[...]

  • Page 33

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 24 This is 12% of the maximum allowable distance for 100BASE-TX full-duplex twisted- pair media (100 m) [12/100 x 100% = 12%]. The total of the two percentages (57% + 12%) is 69%, which is allowable. 3.2.2 Segment Distances, Half-duplex Fast Ethernet shared bandwidth devices op[...]

  • Page 34

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 25 Collision Domain A collision domain is defined in the IEEE 802.3u standard as a cluster of network devices that, regardless of topology, must be less than 512 BT (Bit Times) of signal delay (PDV or Path Delay Value) in diameter between any two nodes. Nodes in a collision dom[...]

  • Page 35

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 26 Collision Domain Diameter must be less than 512 BT (Bit Times). Bit Times are related to media type as shown in Table 3.2.2a. Table 3.2.2a: Worst case round -trip delay for Fast Ethernet media* Media Type Round-trip delay in Bit Time per Meter (BT/m) Fiber Optic 1.000 Shield[...]

  • Page 36

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 27 Table 3.2.2b: Worst case roun d-trip delay for Fast Ethernet d evice components* Component Round-trip delay in Bit Times (BT) 2 TX DTEs 100 2 FX DTEs 100 1 FX and 1 TX DTE 100 2 T4 DTEs 138 1 T4 and 1 TX or FX DTE 127 Class I Repeater 140 Class II Repeater w i th any combina[...]

  • Page 37

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 28 PDV = (sum of cabling delays) + (sum of repeater & media converter delays) + (DTE pair delays) + (safety margin) PDV is the Path Delay Value of the wors t case path. For the network to adhere to IEEE 802.3u standard, this value must be less than 512 BT. The safety margin[...]

  • Page 38

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 29 “Rules-of-thumb” Collision Domain Calculations Rules-of-thumb, while inexact, may be helpful in planning network topology. As a rule-of-thumb, a Class II Repeater has a PDV of about 90 to 95 BTs, and twisted- pair or fiber media has a PDV of about 1 BT per meter of lengt[...]

  • Page 39

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 30 the use of fiber media, but not to gain distance by facilitating use of fiber media instead of twisted pair. As a sample calculation, consider the question of what fiber cable distance (connected by a pair of Black Box LH1500 on each end) can be obtained that will interconne[...]

  • Page 40

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 31 which indicates a fiber cable length of about 40 meters . It is obvious that using twisted pair wi ring to connect the hubs would enable the interconnect length to be the 100 meters maximu m for twisted pair media, and this would still leave about a hundred BTs as a safety m[...]

  • Page 41

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 32 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 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,[...]

  • Page 42

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 33 3.3 Connecting Ethernet Media Connecting Ethernet media to the Black Box LH1500 Media Converter is very simple and straightforward. Using a properl y terminated media segment, simply attach the cable end to the appropriate connector. See Sections 4.2 and 4.3 for a descriptio[...]

  • Page 43

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 34 3. Use the LINK LED to ensure proper conn ectivity by noting that the LED will be illuminated when the unit is powered a nd proper connection is established. If the LINK LED is not illuminated, change the setting of the up-link switch (See Section 4.4 for up-link switch info[...]

  • Page 44

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 35 Note : One strand of the duplex fiber optic cable is coded using color bands at regular intervals; you must use the color-coded strand on the associated ports at each e nd of the fiber optic segment. 3. Connect the Transmit (TX) port (li ght colored post) on the LH1500A to t[...]

  • Page 45

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 36 3.4.1 Power Budget Calculations for Fiber Media Receiver Sensitivity and Transmitter Power are the parameters necessary to compute the power budget. To calculate th e power budget of different fiber media installations, the following equations should be used: OPB (Optical Po[...]

  • Page 46

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 37 Fiber Port Module Speed, Std. Mode Std. km fdx (hdx) Wave- length nm Cable Size µ m X’mitr Output P T , dB R’cvr Sens. P R , dB Worst OPB, dB Worst* distance Km, fdx typical OPB, dB typical* distance Km, fdx LH1500A MST, MSC 100Mb FX Multi- mode 2 (0.4) 1300 62.5/125 50[...]

  • Page 47

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 38 4.0 OPERATION This section describes the operation of the Black Box LH1500 Media Converters including power supply requireme nts, up-link switch functionality, and a description of all LEDs. 4.1 Power Re quirements, Pow er Supply Type s Black Box LH1500 Media Converters requ[...]

  • Page 48

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) 39 4.2 Front Panel LEDs LED Description PWR Illuminates GREEN to indicate the unit is receiving DC power. LINK (RJ-45 port) Illuminates GREEN, to indicate proper connectivity on the 100BASE-TX network segmen t. LINK will turn off in the event connectivity is lost between the en[...]

  • Page 49

    Black Box LH1500 Media C onverters Installation and User Gui de (08/05) for normal twisted pair connection to a us er device. When set to the DOWN position (X), the Media Converter is wired with cr oss-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 ) ([...]

  • Page 50

    Black Box LH1500 Media C onverters In stallation and User Guide (08/05) 41 5.0 TROUBLESHOOTING If problems should develop during in stallation or operation, follow the suggestions below prior to calling Techni cal Support for help. If you are unsure of any procedure described in this chapter, or if the LH1500 Media Converter is not operating as exp[...]

  • Page 51

    Black Box LH1500 Media C onverters In stallation and User Guide (08/05) 42 2. Check the cables and connectors to make sure that they have been properly connected and the cables/wires have not b een crimped or in some way impaired during installation. 3. Check that the AC power cord is plugge d into a functioning electrical outlet. Make sure that th[...]

  • Page 52

    Black Box LH1500 Media C onverters In stallation and User Guide (08/05) 43 5.2 When Calling for Assistance Please be prepared to provide the following information. 1. A complete description of the problem, including the following points: a. The nature and duration of the problem; b. Situations when the problem occurs; c. The components involved in [...]

  • Page 53

    Black Box LH1500 Media C onverters In stallation and User Guide (08/05) 44 4. A record of changes that have been made to y our network configuration prior to the occurrence of the problem. Any changes to system administration procedures should all be noted in this record. 5.3 Return Material Auth orization (RMA) Procedure Shipping and Packaging Inf[...]

  • Page 54

    Black Box LH1500 Media C onverters In stallation and User Guide (08/05) 45 3. Black Box Corporation is not respons ible 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[...]