1. Manuals
  2. Brands
  3. Cabletron Systems Manuals
  4. Transceiver
  5. TPT
  6. User manual

Cabletron Systems TPT User Manual

10base-t twisted pair transceiver
Hide thumbs
Table of Contents

Advertisement

Quick Links

TPT
10BASE-T
TWISTED PAIR TRANSCEIVER
USER'S MANUAL
CABLETRON SYSTEMS, P.O. Box 5005, Rochester, NH 03867-5005

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the TPT and is the answer not in the manual?

Questions and answers

Related Manuals for Cabletron Systems TPT

Summary of Contents for Cabletron Systems TPT

  • Page 1 10BASE-T TWISTED PAIR TRANSCEIVER USER’S MANUAL CABLETRON SYSTEMS, P.O. Box 5005, Rochester, NH 03867-5005...
  • Page 3 P.O. Box 5005, Rochester, NH 03867-5005 All Rights Reserved Printed in the United States of America Order number: 9030346-02 January 1992 LANVIEW, TPT, TPMIM, MMAC, and LAN-MD are trademarks of Cabletron Systems Inc. Velcro is a registered trademark of Velcro Industries, B.V. NOTICE...

  • Page 4: Fcc Notice

    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 of FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.

  • Page 5: Table Of Contents

    THE TPT 10BASE-T TWISTED PAIR TRANSCEIVER...1-3 CHAPTER 2 - REQUIREMENTS AND SPECIFICATIONS NETWORK DESIGN GUIDELINES ...2-1 OPERATING SPECIFICATIONS ...2-5 CHAPTER 3 - INSTALLING THE TPT UNPACKING THE TPT ...3-1 MOUNTING THE TPT...3-2 CONNECTING THE TPT TO THE NETWORK ...3-3 3.3.1 Setting the SQE Switch ...3-3...
  • Page 6 Contents 3.3.3 Connecting the TPT to a Twisted Pair Segment ... 3-5 3.3.4 Providing Strain Relief... 3-8 CHAPTER 4 - TESTING AND TROUBLESHOOTING INSTALLATION CHECK-OUT ... 4-1 USING LANVIEW ... 4-3...

  • Page 7: Chapter 1 - Introduction

    USING THIS MANUAL Chapter 1, Introduction, is an overview of the TPT 10BASE-T Twisted Pair Transceiver. This chapter shows how to use the TPT in an Ethernet network and explains the TPT’s features. Chapter 2, Requirements and Specifications, contains network design guidelines for connecting the TPT to the network.

  • Page 8: Getting Help

    Ethernet device. Chapter 4, Testing and Troubleshooting, contains procedures for verifying that the TPT is operational. It also describes the LANVIEW™ LEDs, and how you can use them to troubleshoot network problems.

  • Page 9: The Tpt 10Base-T Twisted Pair Transceiver

    Because the TPT is small, it can connect to Ethernet devices directly, or you can connect it by means of an AUI cable. The TPT fully conforms to IEEE 802.3 10BASE-T specifications and guarantees the flexibility to connect to networks using IEEE 802.3 or Ethernet Version 1 or 2 equipment.
  • Page 10 SQE test pulse as a collision, which significantly slows the network response time. Polarity Detection and Correction The TPT incorporates a Polarity Detection and Correction feature. This feature lets the TPT pass data to and from the...
  • Page 11 LANVIEW LNK (Link) LED will flash. NOTE: If you have a polarity mismatch, you should remove the segment from the TPT and correct the problem. This will make the segment compatible with a device that does not have the Polarity Detection and Correction feature.
  • Page 12 INTRODUCTION 1. Workstation 2. TPT (directly attached to Workstation) 3. Twisted Pair Jumper 4. Wall Plate 5. Twisted Pair Cable 6. MMAC with TPMIM Figure 1-2 Typical TPT Setup For example, the twisted pair segment (3) can be a jumper to a wall plate (4).

  • Page 13: Chapter 2 - Requirements And Specifications

    Ethernet device. The chapter also lists specifications and power requirements. Review all specifications, guidelines, and requirements in this chapter before you install the TPT. You must meet all these conditions to ensure satisfactory performance of your network.
  • Page 14 REQUIREMENTS AND SPECIFICATIONS 100 meter (328 ft.) link using 22-26 AWG unshielded twisted pair wire. As a general rule, links up to 150 meters (492 ft.) for unshielded twisted pair and 200 meters (656 ft.) for shielded twisted pair are possible. For each connector or patch panel inthe link, subtract 12 meters (39 ft.) from the 150 meter limit.This allows for links of up to 126 meters (413 ft.) using standard 24 AWG UTP wire and two patch...
  • Page 15 Crosstalk - Crosstalk is caused by signal coupling between the different cable pairs contained within a multi-pair cable bundle. 10BASE-T transceivers are designed so that you do not need to be concerned about cable crosstalk, provided the cable meets all other requirements.
  • Page 16 REQUIREMENTS AND SPECIFICATIONS data errors if the impulses occur at very specific times during data transmission. Generally, you do not need to be concerned about noise. If you suspect noise related data errors, either reroute the cable or eliminate the source of the impulse noise. •...

  • Page 17: Operating Specifications

    The TPT is designed and manufactured in accordance with the IEEE 802.3 10BASE-T standard. INTERFACE CONNECTIONS Figure 2-1 shows the pin connections for the RJ-45 receptacle on the TPT. Figure 2-2 shows the pin configuration of the AUI connecter.
  • Page 18 REQUIREMENTS AND SPECIFICATIONS Pin 1 Pin 2 Pin 3 Pin 4 No Connection Pin 5 No Connection Pin 6 Pin 7 No Connection Pin 8 No Connection Figure 2-1 RJ-45 Pin Connections 1 2 3 4 5 6...
  • Page 19 9 Collision - 10 Transmit - 11 Shield 12 Receive - Type: 15 Position D Type Receptacle Pin Connector Shell: Connected to TPT enclosure Figure 2-2 AUI Pin Connections 5 Receive + 6 Power Return 7 No Connection 8 Shield...

  • Page 20: Power Supply

    REQUIREMENTS AND SPECIFICATIONS POWER SUPPLY Parameter Input Voltage: Total Current Draw: ENVIRONMENTAL Non-operating Temperature: Operating Temperature: Operation Humidity: Typical Worst Value Case 12 V 9.5 to 15 V 170 mA 210 mA max. -30 to +80 C -5 to 60 C 5 to 95% noncondensing...
  • Page 21 NEC725-2(b), CSA, IEC, TUV, VDE Class A. Meets FCC part 15, Class A limits. WARNING: It is the responsibility of the person who sells the system of which the TPT will be a part, to ensure that the total system meets allowed limits of conducted and radiated emissions.
  • Page 22 REQUIREMENTS AND SPECIFICATIONS PHYSICAL Dimensions: Weight: 2-10 9.9 x 4.1 x 2.0 cm 3.7 x 1.6 x .8 in 68 gm .15 lb...

  • Page 23: Chapter 3 - Installing The Tpt

    CHAPTER 3 INSTALLING THE TPT This chapter outlines the procedure for connecting the TPT to your network. Be sure that all specifications and requirements listed in Chapter 2, Requirements and Specifications, are met before you install the TPT. UNPACKING THE TPT To unpack the transceiver: 1.

  • Page 24: Mounting The Tpt

    INSTALLING THE TPT MOUNTING THE TPT Using the contents of the accessory package, you can mount the TPT on a surface close to the workstation, or on the workstation itself. The surface you choose should meet the following requirements: •...

  • Page 25: Connecting The Tpt To The Network

    The SQE Test switch lets you enable or disable the SQE test function. The SQE switch is the two-position slide switch on top of the TPT. CAUTION: You must disable the SQE test function if you are connecting the transceiver to a repeater or to an Ethernet Version 1 device.
  • Page 26 • To turn on the SQE test function, slide the SQE Switch toward the AUI port. This aligns the switch with the on position (•), as indicated on the front of the TPT. 3.3.2 Connecting the TPT to an Ethernet Device The TPT connects directly to an Ethernet device through an AUI connection.

  • Page 27: Pair Segment

    Ethernet device, maintaining polarity. For example, the positive transmit lead (TX+) of an Ethernet device goes to the positive receive lead (RX+) of the TPT. The Receive Pair of the Ethernet device connects to the Transmit Pair of the TPT. This provides the necessary Crossover or Null Modem Effect.
  • Page 28 INSTALLING THE TPT 10BASE-T Device Figure 3-1 Twisted Pair Connection To connect the TPT to your network (Fig. 3-3) Connect the twisted pair segment to the TPT by inserting the RJ-45 connector on the segment into the RJ-45 port on the transceiver.
  • Page 29 NOTE: If link has been established, but the LNK LED flashes on and off, the polarity of the cable is reversed in the receive pair of the twisted pair segment. The TPT has a self correcting feature that allows it to continue operating without having to rewire the RJ-45 connector.

  • Page 30: Providing Strain Relief

    Providing Strain Relief for the TPT We recommend that you support the cabling attached to the TPT-4 to relieve the stress on the connections. To support the UTP segment and AUI cable: Mark the location where you want to place the mounting bases for the cable ties.
  • Page 31 Ethernet node testers, such as the Cabletron Systems’ LAN-MD™, that are capable of generating valid data packets. 1. Connect the TPT (2, Fig. 4-1) directly to the AUI port on one LAN-MD (2). 2. Connect a second properly functioning 10BASE-T transceiver (4), such as another TPT, to a second LAN-MD (5).

  • Page 32: Testing And Troubleshooting

    LAN-MD is 000 if SQE is on or 001 if SQE is off • a PASS TEST STATUS LED is lit on the LAN-MD 1. LAN-MD 2.TPT (directly attached to LAN-MD) 3.Twisted Pair Segment 4.TPT (directly attached to LAN-MD) 5.LAN-MD...

  • Page 33: Using Lanview

    SERVER LAN-MD that was left running on the other segment. When the TPT has passed the NODE test, it is ready for normal operation. If any failures are noted, please contact Cabletron Systems’ Technical Support.
  • Page 34 TESTING AND TROUBLESHOOTING Power (PWR) LED When lit, this green LED indicates that the transceiver is receiving power though its AUI connection. If the PWR LED is not lit, power is not being received from the device, or the DC-to-DC converter in the transceiver has failed.
  • Page 35 TESTING AND TROUBLESHOOTING The SQE test is used to ensure that the collision presence circuit and the path between the Ethernet device and the transceiver are operational. This test is generated by the transceiver after a data packet has been transmitted through the transceiver.
  • Page 36 If no data has been sent for 20 ms, a positive link test pulse of 100 ns is sent onto the transmit link of the twisted pair cable. The TPT receives the link pulse and checks for the correct rate, polarity and pulse shape. If no pulses are received or the pulses are not correct, the transceiver enters the Link Fail State and the LED will not be lit.

Table of Contents