Related Manuals for Cabletron Systems MR-9T
Summary of Contents for Cabletron Systems MR-9T
- Page 1 MR9T IEEE 802.3 10BASE-T MR9T-C IEEE 802.3 10BASE-T/10BASE-2 MULTIPORT REPEATER INSTALLATION GUIDE CABLETRON SYSTEMS, P. O. Box 5005, Rochester, NH 03866-5005...
- Page 2 NOTICE NOTICE Cabletron Systems reserves the right to make changes in specifications and other information contained in this document without prior notice. The reader should in all cases consult Cabletron Systems to determine whether any such changes have been made. The hardware, firmware, or software described in this manual is subject to change without notice.
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Page 3: Fcc Notice
FCC NOTICE WARNING: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 protection against harmful interference when the equipment is operated in a commercial environment. This equipment uses, generates, and can radiate radio frequency energy and if not installed in accordance with the operator’s manual, may cause harmful interference to radio communications. -
Page 4: Table Of Contents
CHAPTER 1 INTRODUCTION Using This Manual ...1-1 Getting Help ...1-2 Overview ...1-2 CHAPTER 2 SPECIFICATIONS AND REQUIREMENTS Specifications...2-1 General Specifications ...2-1 Twisted Pair Connectors ...2-2 BNC Interface (Port 9, MR9T-C) ...2-3 Power Supply ...2-4 Environmental ...2-4 Safety ...2-4 Physical ...2-4 10BASE-T Network Design Guidelines: MR9T...2-5 10BASE-2 Network Design Guidelines: MR9T-C ... -
Page 5: Chapter 1 Introduction
INTRODUCTION CHAPTER 1 INTRODUCTION The MR9T-C 10BASE-T/10BASE-2 Multiport Twisted Pair Repeater (Figure 1-1) and the MR9T 10BASE-T Multiport Twisted Pair Repeater (Figure 1-2) conform to all applicable IEEE 802.3 specifications. Each repeater has nine ports. Ports 1 through 8 on both models are 10BASE-T compliant RJ-45 ports. -
Page 6: Getting Help
INTRODUCTION 1.2 GETTING HELP If you need additional support related to the MR9, or if you have any questions, comments, or suggestions related to this manual, contact Cabletron Systems Technical Support. Before calling, please have the following information ready: • The product type (MR9T or MR9T-C) and the product serial number. - Page 7 MR9T-C 802.3 10BASE-T/10BASE2 MULTI PORT REPEATER LANVIEW WITH The Complete Networking Solution PORT 9 Figure 1-1. The MR9T-C MR9T 802.3 10BASE-T MULTI PORT REPEATER LANVIEW WITH The Complete Networking Solution PORT 9 Figure 1-2. The MR9T PORT 9 8 7 6 5 4 3 2 1 THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES.
- Page 8 INTRODUCTION The MR9 functions include the following: • Transmit re-timed data packets • Regenerate the preamble • Extend collision fragments • Automatically partition problem segments • Reconnect non-problem segments The auto-segment/auto-reconnect feature ensures that if a problem develops on a segment connected to the MR9, just those devices on that segment are affected.
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Page 9: Chapter 2 Specifications And Requirements
SPECIFICATIONS AND REQUIREMENTS 2.1 SPECIFICATIONS Listed below are the electrical and physical specifications of the MR9. Cabletron Systems reserves the right to change these specifications at any time without notice. General Specifications Delay times (any segment in to all segments out) Start of packet: Collision to JAM: Preamble... -
Page 10: Twisted Pair Connectors
SPECIFICATIONS/REQUIREMENTS Twisted Pair Connectors Type: RJ-45 Port Pin Configuration: 1 2 3 4 5 6 MR9T Port 9 Figure 2-1. MR9T Port 9 Switched for Straight-Through Pin Configuration Page 2-2 RJ-45 port, for use with twisted pair cable. See Figure 2-1. Figure 2-1 shows the MR9T Port 9 straight-through pin configuration, as indicated by ‘=’... -
Page 11: Bnc Interface (Port 9, Mr9T-C)
Port 9 Switched for Crossed-Over Operation (X) Figure 2-2. RJ-45 Port Cross-Over Pin Configuration BNC Interface (Port 9, MR9T-C) Type: Terminations: Grounding: SPECIFICATIONS/REQUIREMENTS 1 2 3 4 5 6 Pin 1 Pin 2 Pin 3 Pin 4 No Connection Pin 5 No Connection Pin 6 Pin 7... -
Page 12: Power Supply
SPECIFICATIONS/REQUIREMENTS Power Supply Input Power USA: Input Power UK: Input Power Europe: Output Power: Operating Temperature Range: Note: The power source for the MR9 is to be certified for use in the country of installation with a SELV output of 15V DC and capable of providing a minimum of 900mA. -
Page 13: 10Base-T Network Design Guidelines: Mr9T
2.2 10BASE-T NETWORK DESIGN GUIDELINES: MR9T Transceivers and network devices that connect to the MR9T must meet IEEE 802.3 standards. Your network must meet the following IEEE 802.3 10BASE-T Twisted Pair requirements when connecting devices with the MR9T. • Segment Length - The IEEE 802.3 10BASE-T standard requires that 10BASE-T devices support a 100 meter (328 feet) minimum link length using 22-26 AWG unshielded twisted pair wire. -
Page 14: 10Base-2 Network Design Guidelines: Mr9T-C
SPECIFICATIONS/REQUIREMENTS • Noise - Noise is caused by either crosstalk (signal coupling between the different cable pairs in a multi-pair cable, or externally induced impulses. External noise can cause data errors if impulses occur at very specific times during data transmission. -
Page 15: Chapter 3 Installation
When you unpack the MR9, verify that you have received the following: • One 15 Vdc, 0.9 Amp wall mount transformer with attached power cord • Two sets of Velcro mounts • Ten 6 inch tie wraps • Four cable clamps After you are sure that you have met all requirements listed in Chapter 2, Specifications and Requirements, complete the installation instructions provided in this chapter. -
Page 16: Connecting The Mr9 To The Power Source
INSTALLATION 3.2 CONNECTING THE MR9 TO THE POWER SOURCE To connect the repeater to the power source: 1. Plug the power cord (Figure 3-1) into the power receptacle located on the side of the MR9. 2. Plug the power cord into a wall receptacle. After you have made the power connection, verify that the PWR LED is lit, indicating that the repeater is receiving power. -
Page 17: Connecting Cables
3.4 CONNECTING CABLES In a typical application, the MR9 connects up to eight Ethernet devices to the Ethernet network. One port connects the repeater to the network while the other ports connect to Ethernet devices such as PC network interface cards. Usually, Port 9 is used as the connection to the network. -
Page 18: Connecting The Network Segment
INSTALLATION transceiver or PC network interface card. Figure 3-3 shows a representation of a typical twisted pair repeater installation. Pins 1, 2, 3, and 6 in an RJ-45 connector are the pins used to carry the signals. Repeater Port 1X connects to a transceiver, which connects to a PC network interface card. - Page 19 Connect the other end of the twisted pair segment to any port on the front of the MR9T. If you are using MR9T Port 9, make sure that the configuration switch on the side of the MR9T is set correctly, either cross-over (X) or straight-through (=).
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Page 20: Connecting Twisted Pair Segments To Rj-45 Ports
INSTALLATION e. Reconnect the cable segment to the repeater and the network device. If a link has not been established, contact Cabletron Systems Technical Support. 3.6 CONNECTING TWISTED PAIR SEGMENTS TO RJ-45 PORTS To connect a workstation or other device to the MR9: 1. -
Page 21: Chapter 4 Using Lanview
USING LANVIEW CHAPTER 4 USING LANVIEW The MR9 uses Cabletron Systems’ built-in diagnostic and status monitoring system, LANVIEW. The LANVIEW indicators give you a visual indication of network status and problems. This chapter explains how to use the LANVIEW indicators to monitor network activity and help troubleshoot network problems on the physical layer. - Page 22 USING LANVIEW Receive (RVC) LED This yellow indicator normally flashes to indicate that the MR9 is repeating data packets received from that segment. The flash of the LED is pulse stretched for viewing effect. MR9T 802.3 10BASE-T MULTIPORT REPEATER LANVIEW WITH Figure 4-1.