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Cabletron Systems EMC37-12 User Manual

10base-t to 10base-2 12 port ethernet media converter
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EMC37-12
10BASE-T TO 10BASE-2
12 PORT ETHERNET MEDIA CONVERTER
USER'S GUIDE
CABLETRON SYSTEMS, P. O. Box 5005, Rochester, NH 03866-5005

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Summary of Contents for Cabletron Systems EMC37-12

  • Page 1 EMC37-12 10BASE-T TO 10BASE-2 12 PORT ETHERNET MEDIA CONVERTER USER’S GUIDE CABLETRON SYSTEMS, P. O. Box 5005, Rochester, NH 03866-5005...
  • Page 2 IN IT, EVEN IF CABLETRON SYSTEMS HAS BEEN ADVISED OF, KNOWN, OR SHOULD HAVE KNOWN, THE POSSIBILITY OF SUCH DAMAGES. This electric hazard symbol appears in the EMC37-12 User’s Guide. Read all instructions following this symbol. Failure to follow the instructions appearing with this symbol could result in the presence of an electric hazard which has the potential to cause injury.

  • Page 3: Fcc Notice

    Consequently, when used in a residential area or in an adjacent area thereto, radio interference may be caused to radios and TV receivers, etc. Read the instructions for correct handling. FCC NOTICE DOC NOTICE VCCI NOTICE EMC37-12 USER’S GUIDE...

  • Page 4: Program License Agreement

    Program. 3. APPLICABLE LAW. This License Agreement shall be interpreted and governed under the laws and in the state and federal courts of New Hampshire. You accept the personal jurisdiction and venue of the New Hampshire courts. EMC37-12 USER’S GUIDE...

  • Page 5: United States Government Restricted Rights

    7013 (c) (1) (ii) and its successors, and use, duplication, disclosure by the Government is subject to restrictions as set forth in subparagraph (c) (1) (ii) of the Rights in Technical Data and Computer Software clause at 252.227-7013. Cabletron Systems, Inc., 35 Industrial Way, Rochester, New Hampshire 03867. EMC37-12 USER’S GUIDE...

  • Page 6: Table Of Contents

    INSTALLING THE EMC37-12 ... 2-1 2.2.1 Rack Mounting the EMC37-12 ... 2-2 2.2.2 Free-Standing Shelf or Tabletop Installation ... 2-3 CONNECTING THE EMC37-12 TO THE POWER SOURCE... 2-4 CHAPTER 3 CONNECTING TO THE NETWORK CONNECTING A TWISTED PAIR SEGMENT TO THE EMC37-12 ... 3-1 CONNECTING A 10BASE-2 THIN-NET SEGMENT...

  • Page 7: Chapter 1: Introduction

    EMC37-12. Chapter 1, Introduction, describes EMC37-12 features and specifications. Chapter 2, Installation, describes how to install the EMC37-12 into a 19-inch rack or as a standalone device. Chapter 3, Connecting to the Network, explains how to connect network segments to the EMC37-12.

  • Page 8: Getting Help

    CHAPTER 1: INTRODUCTION 1.2 GETTING HELP If you need additional support related to the EMC37-12, or if you have any questions, comments, or suggestions concerning this manual, contact Cabletron Systems Technical Support: By phone ...(603) 332-9400 By CompuServe ...GO CTRON from any ! prompt By Internet mail ...support@ctron.com...

  • Page 9: Emc37-12 Features

    LANVIEW. LANVIEW LEDs help you quickly identify Power and Link status. Connectivity The rear panel of the EMC37-12 has a 50-pin CHAMP connector (RJ-71) that supports twelve twisted pair segments. The front panel has twelve 10BASE-T thin-net ports. Each thin-net port uses a BNC style receptacle with a gold center contact.
  • Page 10 This unit meets the safety requirements of UL 1950, CSA C22.2 NO 950, and EN 60950; the EMI requirements of FCC Class A and EN 55022 Class A, VCCI Class I; and the EMC requirements of EN 50082-1. EMC37-12 USER’S GUIDE...

  • Page 11: Chapter 2: Installation

    2.2 INSTALLING THE EMC37-12 You can install the EMC37-12 in a 19-inch rack or place it on any horizontal surface (e.g. a table or shelf). Cabletron provides an accessory kit with the EMC37-12 that includes Rack Mount Brackets and Mounting Screws.

  • Page 12: Rack Mounting The Emc37-12

    CHAPTER 2: INSTALLATION 2.2.1 Rack Mounting the EMC37-12 Before installing the EMC37-12, care must be taken to ensure that the rack used will support the unit and that the rack remains stable with the EMC37-12 installed. In order to allow for proper cooling within the rack, there must be a two inch clearance on either side of the unit.

  • Page 13: Free-Standing Shelf Or Tabletop Installation

    3. With the rack mounting brackets installed, position the EMC37-12 between the vertical frame members of the 19-inch rack and fasten it securely with the mounting screws as shown in Figure 2-2. EMC37-12 TPLINK 12 11 10 9 8 7 6 5 4 3 2 1 Figure 2-2.

  • Page 14: Connecting The Emc37-12 To The Power Source

    1. Plug the power cord into the back panel of the EMC37-12. 2. Plug the other end of the power cord into a grounded wall outlet. 3. Verify that the PWR LED is on, this indicates that the EMC37-12 is receiving power.

  • Page 15: Chapter 3: Connecting To The Network

    10BASE-T compliant Ethernet device that has a 50-pin CHAMP connector (e.g., the Cabletron Systems TPRMIM or TPXMIM). You can also run a 50-pin feeder cable from the EMC37-12 to a punch down block. The CHAMP connector supports twelve 10BASE-T, twisted pair segments.

  • Page 16: Connecting A 10Base-2 Thin-Net Segment

    The EMC37-12 has 12 10BASE-2 ports located on the front panel. This section explains how to connect a thin-net segment to the EMC37-12. To connect a thin-net segment to the EMC37-12, refer to Figure 3-2 and perform the following steps: 1.

  • Page 17: Finishing The Installation

    The EMC37-12 is now ready for operation. Before placing the network into service, test the installation thoroughly, making sure that you can address all stations and that the EMC37-12 and all stations are indicating normal operation. Ensure that the networking software is configured properly to match the installed network.

  • Page 18: Chapter 4: Using The Lanview Leds

    USING THE LANVIEW LEDS This chapter describes how to use the LANVIEW Diagnostic LEDs to monitor EMC37-12 status and diagnose problems. TPLINK EMC37-12 USER’S GUIDE CHAPTER 4 EMC37-12 12 11 10 9 8 7 6 5 4 3 2 1...
  • Page 19 (circuit breakers, fuse, power cord, etc.). If the proper source is present, the prob- lem could be with the unit. Indicates that the EMC37-12 is receiving power. No activity. Indicates that the unit is transmitting data packets from the twisted pair port to the thin-net port.

  • Page 20: Appendix A: Cable Requirements

    This appendix provides cable requirements for each of the EMC37-12 ports. A.1 10BASE-T TWISTED PAIR REQUIREMENTS When you connect a 10BASE-T twisted pair segment to the EMC37-12, the device at the other end of the twisted pair segment must meet IEEE 802.3 10BASE-T specifications. Your 10BASE-T twisted pair segment must meet the following requirements.

  • Page 21: 10Base-2 Thin-Net Network Requirements

    Devices A maximum of 10 devices may be connected to a thin-net coax segment on the EMC37-12, and these taps must be at least 0.5 meters apart. For special network design, contact Cabletron Systems Technical Support. System Characteristics Since the EMC37-12 does not retime data, the operational limits of the EMC37-12 may be determined by individual system jitter.

  • Page 22: Appendix B: Twisted Pair Wiring Tables

    Punch Down Block (see Figure B-1) to wire your twisted pair segments. The following tables are included in this appendix: • Table B-1 Twisted Pair Wiring from an EMC37-12 to a Punch Down Block • Table B-2 Twisted Pair Wiring from a Punch Down Block to a 10BASE-T Device EMC37-12 USER’S GUIDE...

  • Page 23: Twisted Pair Wiring From An Emc37-12 To Apunch Down Block

    APPENDIX B: TWISTED PAIR WIRING TABLES B.1 TWISTED PAIR WIRING FROM AN EMC37-12 TO A PUNCH DOWN BLOCK Note: Pins 25 and 50 on the CHAMP connector are not used. Table B-1. EMC37-12 to a Punch Down Block From Into and Out of 50 Pin...
  • Page 24 Table B-1. EMC37-12 to a Punch Down Block (Continued) From Into and Out of 50 Pin EMC37-12 Feeder Cable Port 8 40 Black/Gray 15 Gray/Black 41 Yellow/Blue 16 Blue/Yellow Port 7 38 Black/Green 13 Green/Black 39 Black/Brown 14 Brown/Black Port 6...
  • Page 25 APPENDIX B: TWISTED PAIR WIRING TABLES Table B-1. EMC37-12 to a Punch Down Block (Continued) From Into and Out of 50 Pin EMC37-12 Feeder Cable Port 4 32 Red/Orange 33 Red/Green Port 3 30 White/Gray 31 Red/Blue Port 2 28 White/Green...

  • Page 26: Twisted Pair Wiring From A Punch Down Block To A 10Base-T Device

    B37 Yellow/Brown B38 Brown/Yellow B39 Yellow/Gray B40 Gray/Yellow Port 9 B33 Yellow/Orange B34 Orange/Yellow B35 Yellow/Green B36 Green/Yellow EMC37-12 USER’S GUIDE TWISTED PAIR WIRING TABLES To RJ45 Wallplate 3 RX+ 6 RX- 1 TX+ 2 TX- 3 RX+ 6 RX-...
  • Page 27 1 TX+ 2 TX- 2 TX- 3 RX+ 3 RX+ 6 RX- 6 RX- 1 TX+ 1 TX+ 2 TX- 2 TX- 3 RX+ 3 RX+ 6 RX- 6 RX- 1 TX+ 1 TX+ 2 TX- 2 TX- EMC37-12 USER’S GUIDE...
  • Page 28 B12 Blue/Red Port 2 White/Green Green/White White/Brown Brown/White Port 1 White/Blue Blue/White White/Orange Orange/White EMC37-12 USER’S GUIDE TWISTED PAIR WIRING TABLES To RJ45 Wallplate 3 RX+ 6 RX- 1 TX+ 2 TX- 3 RX+ 6 RX- 11 TX+ 2 TX-...
  • Page 29 APPENDIX B: TWISTED PAIR WIRING TABLES Figure B-1. Punch Down Block Pinout EMC37-12 USER’S GUIDE...

  • Page 30: Power Supply Cord

    POWER SUPPLY CORD The mains cord used with this equipment must be a 2 conductor plus ground type with minimum 0.75 mm square conductors and must incorporate a standard IEC appliance coupler on one end and a mains plug on the other end which is suitable for the use and application of the product and that is approved for use in the country of application.

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