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Cabletron Systems TPT User Manual

Manual is about: 10BASE-T TWISTED PAIR TRANSCEIVER

Summary of TPT

  • Page 1

    Tpt 10base-t twisted pair transceiver user’s manual cabletron systems, p.O. Box 5005, rochester, nh 03867-5005.

  • Page 3: Notice

    I notice the information presented in this document, including descriptions of hardware, firmware, and software, is subject to change without notice and should not be construed as a commitment by cabletron systems. Cabletron systems assumes no responsibility for any errors that may appear in this ma...

  • Page 4: Fcc Notice

    Fcc notice ii 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...

  • Page 5: Contents

    Iii contents chapter 1 - introduction 1.1 using this manual...............................1-1 1.2 getting help .........................................1-2 1.3 the tpt 10base-t twisted pair transceiver..........................................1-3 chapter 2 - requirements and specifications 2.1 netwo...

  • Page 6

    Contents iv 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 4.1 installation check-out ................... 4-1 4.2 using lanview .........................................

  • Page 7: Chapter 1

    1-1 chapter 1 introduction welcome to cabletron systems’ tpt™ 10base-t twisted pair transceiver user’s manual. We have designed this manual as a simple installation and reference guide to the tpt. The tpt provides 10base-t compliant twisted pair connectivity to your ethernet network.You should read ...

  • Page 8: 1.2

    Introduction 1-2 chapter 3, installing the tpt , contains steps for unpacking the tpt, setting the sqe switch, connecting the transceiver to the network, and connecting the transceiver to an ethernet device. Chapter 4, testing and troubleshooting , contains procedures for verifying that the tpt is o...

  • Page 9: 1.3

    Introduction 1-3 1.3 the tpt 10base-t twisted pair transceiver connections the tpt (fig. 1-1) is designed to connect two ethernet devices. 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 10bas...

  • Page 10

    Introduction 1-4 the tpt 10base-t twisted pair transceiver lets you use existing twisted pair wiring as part of an ethernet network. Distance and cable type the tpt supports an unshielded twisted pair (utp) segment, up to 100 meters (328 feet) of 24 awg utp with an impedance of 85-110 ohms. Signal q...

  • Page 11

    Introduction 1-5 host, regardless of the polarity of the twisted pair segment’s receive link. If polarity is reversed, the 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 compatib...

  • Page 12

    Introduction 1-6 figure 1-2 typical tpt setup for example, the twisted pair segment (3) can be a jumper to a wall plate (4). From the wall plate, a twisted pair cable (5) in the building’s distribution wiring runs to a distribution closet. In the closet, the twisted pair segment is connected to cabl...

  • Page 13: Chapter 2

    2-1 chapter 2 requirements and specifications this chapter describes the network requirements for connecting the tpt 10base-t twisted pair transceiver to a twisted pair segment and an ethernet device. The chapter also lists specifications and power requirements. Review all specifications, guidelines...

  • Page 14

    Requirements and specifications 2-2 100 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, su...

  • Page 15

    Requirements and specifications 2-3 the cable. Since the cable is shielded, signal reflection has little effect on the received signal’s quality, due to the lack of crosstalk between the shielded cable pairs. Cabletron systems’ 10base-t twisted pair products work on shielded twisted pair cable with ...

  • Page 16

    Requirements and specifications 2-4 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. • temperatur...

  • Page 17: 2.2

    Requirements and specifications 2-5 2.2 operating specifications this section contains the specifications, power supply requirements, and environmental guidelines for the tpt. Cabletron systems reserves the right to change these specifications at any time without notice. The tpt is designed and manu...

  • Page 18

    Requirements and specifications 2-6 figure 2-1 rj-45 pin connections pin 1 tx+ pin 2 tx- pin 3 rx+ pin 4 no connection pin 5 no connection pin 6 rx- pin 7 no connection pin 8 no connection 1 2 3 4 5 6 8 7.

  • Page 19

    Requirements and specifications 2-7 figure 2-2 aui pin connections 1 logic ref 2 collision + 3 transmit + 4 logic ref 5 receive + 6 power return 7 no connection 8 shield 9 collision - 10 transmit - 11 shield 12 receive - 13 power (+12vdc in) 14 shield 15 no connection type: 15 position d type recept...

  • Page 20: Power Supply

    Requirements and specifications 2-8 power supply parameter typical worst value case input voltage: 12 v 9.5 to 15 v total current draw: 170 ma 210 ma max. Environmental non-operating temperature: -30 ° to +80 ° c operating temperature: -5 ° to 60 ° c operation humidity: 5 to 95% noncondensing.

  • Page 21: Safety

    Requirements and specifications 2-9 electromagnetic susceptibility: will operate properly in the following externally applied fields: 10 khz to 30 mhz @ 2 v/m 30 mhz to 1000 mhz @ 5 v/m electromagnetic radiation: meets fcc part 15, class a limits. Safety designed in accordance with ul478, ul910, nec...

  • Page 22: Physical

    Requirements and specifications 2-10 physical dimensions: 9.9 x 4.1 x 2.0 cm 3.7 x 1.6 x .8 in weight: 68 gm .15 lb.

  • Page 23: Chapter 3

    3-1 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. 3.1 unpacking the tpt to unpack the transceiver: 1....

  • Page 24: 3.2

    Installing the tpt 3-2 3.2 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: • allows the twisted pair segment to be easily connected ...

  • Page 25: 3.3

    Installing the tpt 3-3 5. Mount the transceiver by attaching the velcro-backed tpt to the velcro mount. 3.3 connecting the tpt to the network after you are sure that you have met all the requirements listed in chapter 2, complete the installation instructions listed in this section. 3.3.1 setting th...

  • Page 26: 3.3.2

    Installing the tpt 3-4 to set the sqe switch: • to turn the sqe test function off, slide the sqe switch toward the rj-45 port. This should align the switch with the off position ( ° ). • to turn on the sqe test function, slide the sqe switch toward the aui port. This aligns the switch with the on po...

  • Page 27: 3.3.3

    Installing the tpt 3-5 if the pwr led is not lit: 1. Make sure that the power is turned on for the device attached to the tpt. 2. Disconnect the device to which the transceiver is attached. 3. Check the aui connections for proper pinouts. The pinouts for the transceiver connection are listed in chap...

  • Page 28

    Installing the tpt 3-6 10base-t tpt device tranceiver rx+ tx+ rx- tx- tx+ rx+ tx- rx+ figure 3-1 twisted pair connection to connect the tpt to your network (fig. 3-3) 1. 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

    Installing the tpt 3-7 • reconnect the rj-45 connector to the rj-45 port of the tpt. If a link still has not been established, contact cabletron systems’ technical support. Note: if link has been established, but the lnk led flashes on and off, the polarity of the cable is reversed in the receive pa...

  • Page 30: 3.3.4

    Installing the tpt 3-8 3.3.4 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: 1. Mark the location where you want to place the mounting bases for the cable ties. To ...

  • Page 31: Chapter 4

    4-1 chapter 4 testing and troubleshooting this chapter contains procedures for testing the tpt 10base-t twisted pair transceiver. This chapter also explains the function of the lanview leds. 4.1 testing the tpt this section contains procedures to test the tpt to ensure that it is operating properly....

  • Page 32

    Testing and troubleshooting 4-2 3. Attach a crossed-over twisted pair segment (3) between the two transceivers. Figure 4-1 installation checkout 4. Select and run test 6, server,on the lan-md connected in step 1. Verify that: • the status on the lan-md is 000 if sqe is on or 001 if sqe is off • a pa...

  • Page 33: 4.2

    Testing and troubleshooting 4-3 lan-md 1 now acts as the server unit and will echo packets when used with the other lan-md. 5. Select and run test 4, node,on the lan-md connected in step 2. Verify that the node test passes. At least 100 packets should be sent and received with no errors. The packets...

  • Page 34

    Testing and troubleshooting 4-4 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. Figure 4-2 lanview le...

  • Page 35

    Testing and troubleshooting 4-5 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. Transmit (xmt) ...

  • Page 36

    Testing and troubleshooting 4-6 media link good (lnk) led when lit, this green led indicates that a link exists between the transceiver and the 10base-t device at the other end of the twisted pair segment. The lnk led remains lit as long as the link is maintained. A regular continuous flash means th...