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Cabletron Systems MT-800 User Manual

Manual is about: MULTIPORT TRANSCEIVER

Summary of MT-800

  • Page 1

    Mt-800 multiport transceiver user's manual cabletron systems, p.O. Box 5005, rochester, nh 03867-0505 front matterbook page i thursday, january 25, 1996 12:06 pm.

  • Page 2: Notice

    Notice ii 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. In no event shall cabletron sy...

  • Page 3: Fcc Notice

    Notice iii fcc notice this device complies with part 15 of fcc rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Warnin...

  • Page 4: Table of Contents

    Contents v table of contents notice...................................................................................................... Ii fcc notice ............................................................................................. Iii chapter 1 introduction 1.1 using this manual.........

  • Page 5: Chapter 1

    Introduction page 1-7 chapter 1 introduction welcome to the cabletron systems mt-800 multiport transceiver. We have designed this manual to introduce you to the mt-800 and explain how it is used with other cabletron systems products in creating a complete network solution. 1.1 using this manual you ...

  • Page 6

    Introduction page 1-8 1.3 an overview of the mt-800 the mt-800 (figure 1-1) is an eight port transceiver designed to link up to eight network or host devices together. The mt-800 allows these devices to communicate with a network or just between themselves. The mt-800 is compatible with specificatio...

  • Page 7

    Introduction page 1-9 the mt-800 also incorporates cabletron systems lanview diagnostic and monitoring leds. Should a physical layer problem arise, troubleshooting of power failures, collisions, cable faults, or many other problems can be diagnosed rapidly using these leds. 1.4 related user manuals ...

  • Page 8: Chapter 2

    Network requirements/specifications page 2-11 chapter 2 network requirements/specifications this chapter contains the network design guidelines, specifications, power supply requirements, and environmental guidelines for cabletron systems mt-800. Review all specifications and requirements outlined i...

  • Page 9

    Network requirements/specifications page 2-12 figure 2-1. Mt-800 in stand alone configuration b. When one mt-800 is being used in the network mode (fig. 2-2), the total aui length, as measured from the network transceiver to the end device, must not exceed 40 meters. Figure 2-2. Mt-800 in network co...

  • Page 10

    Network requirements/specifications page 2-13 figure 2-3. Mt-800 in stand alone cascaded configuration d. When an mt-800 in the network configuration is cascaded with another mt-800 (fig. 2-4), the total aui length from the network transceiver to the end device must not exceed 30 meters. Figure 2-4....

  • Page 11

    Network requirements/specifications page 2-14 2.2 specifications transmit tx-in and tx-out ports 1-8 parameter typical worst value case frequency range: 4-20 mhz 5-15 mhz input impedance differential: 78 ohms 76-80 ohms common-mode: > 20.0 ohms common-mode voltage range at tx-in: 0-30 volts 0-5 volt...

  • Page 12

    Network requirements/specifications page 2-15 receive (cont.) rx-in and rx-out ports 1-8 parameter typical worst value case common-mode voltage range at tx-in: 0-30 volts 0-5 volts input sensitivity: ± 100 mv ± 75 to 150 mv delay time, rx-in to rx-out start-up: 50 ns 100 ns steady-state: 10 ns 20 ns...

  • Page 13

    Network requirements/specifications page 2-16 collision detector (cont.) parameter typical worst value case common-mode voltage range at cp-in: 0-30 volts 0-5 volts input sensitivity: ± 100 mv ± 75 to 150 mv output voltage into 78 ohms cp-out (any): 900 mv 550 mv interframe test signal (sqe test) (s...

  • Page 14

    Network requirements/specifications page 2-17 interface connectors (cont.) network type: 15 position d type receptacle. Pin pin 1 logic ref. 9 collision - 2 collision + 10 transmit - 3 transmit + 11 logic ref. 4 logic ref. 12 receive - 5 receive + 13 power (+12 vdc) 6 power return 14 logic ref. 7 n/...

  • Page 15

    Network requirements/specifications page 2-18 power supply parameter typical worst value case input voltage vac 47-63 hz. 120 volts 120 vac 90-130 vac 220 volts 220 vac 180-250 vac note : the mt-800 automatically differentiates and selects for the proper input voltage. Overload protection: (2) 3ag 3...

  • Page 16

    Network requirements/specifications page 2-19 isolation: 500 vac 47-63 hz applied between any of the input ports shields and safety earth ground. Service mtbf: 743,373 hrs. Projected mttr: physical dimensions: 3.2 h x 15.0 w x 12.4 d inches 8.13 x 38.1 x 31.5 cm) weight: unit: 3 lbs. Shipping: 4 lbs...

  • Page 17: Chapter 3

    Installation page 3-21 chapter 3 installation this chapter outlines the steps for installing the cabletron systems mt-800. Be sure the guidelines and requirements in chapter 3, installation requirements , and all the specifications and requirements outlines in chapter 2, specifications , are met bef...

  • Page 18

    Installation page 3-22 caution: the sqe must not be enabled when the mt-800 is attached to an ieee 802.3 compliant repeater or equipment meeting ethernet version 1.0 specifications. Set the sqe switch as follows, using a pen, small screwdriver or similar object: • to enable the sqe test function sli...

  • Page 19

    Installation page 3-23 the loopback function can be enabled if the mt-800 is attached to a network through the network port. With loopback enabled, the traffic from the segments attached to port 1-8 will not be allowed to pass to the larger network attached to the network port. Figure 3-2. Loopback ...

  • Page 20

    Installation page 3-24 note: the mt-800 can still be used in the stand alone mode when attached to a network. To do so, enable the loopback function. 4. Attach segments to ports 1-8 as described below. 3.3.2 connecting devices to the mt-800 up to eight devices can be attached to the mt-800 through t...

  • Page 21

    Installation page 3-25 the transmit leds should flash as the device connected to that port transmits data. If the rcv, cp or transmit leds fail to flash, disconnect the respective aui cable, check the connections and reattach the cable. If the leds still fail to light, contact cabletron systems tech...

  • Page 22: Chapter 4

    Testing and lanview page 4-27 chapter 4 testing and lanview this chapter outlines procedures to check that the mt-800 multiport transceiver is properly connected to your network and is functioning properly. Instructions are provided for using cabletron systems lanview to troubleshoot network problem...

  • Page 23

    Testing and lanview page 4-28 figure 4-1 checkout configuration 3. Select 6 - server on the lan-specialist and run the test. Verify that this test passes. • the status on the lan-specialist should read 000, and a pass led should be lit on the lan-specialist. • this lan-specialist now acts as the ser...

  • Page 24

    Testing and lanview page 4-29 when each port on the mt-800 multiport transceiver successfully completes this test, the unit is ready for operation. If any failures were noted, please contact cabletron systems technical support. 4.2 using lanview the mt-800 multiport transceiver uses cabletron system...

  • Page 25

    Testing and lanview page 4-30 collision present (cln) led this red led flashes to indicate a collision has been detected. If the mt-800 is in the network mode, collisions are detected on the network or the aui segments attached to the mt-800. If the mt-800 is in the loopback mode, collisions are onl...