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CHAPTER 2: INSTALLATION REQUIREMENTS/SPECIFICATIONS

2-4

SEH USER’S GUIDE

2.2

NETWORK PORT SPECIFICATIONS

The SEH-22 and SEH-24 network ports use shielded RJ45 connectors
that support both STP and UTP cabling. Figure 2-1 shows the RJ45
pinouts.

Figure 2-1. RJ45 Network Ports

2.3

TRANSCEIVER REQUIREMENTS

When connecting an external network segment via a transceiver to the
SEH with an EPIM-A, the following requirements must be met:

•

The transceiver or Ethernet Device to which the module will be
connected must meet IEEE 802.3 standards, and/or Ethernet
Version 1.0 or Version 2.0 standards.

•

The Signal Quality Error (SQE) test function on the transceiver
must be disabled when it is connected to a repeater or to an
Ethernet Version 1.0 device. In addition, some Version 2.0
equipment does not support the SQE test. Devices that do not
support the SQE test interpret the SQE test pulse as a collision.

1 2 3 4 5 6 7 8

1. R 5. Not Used
2. Receive - 6. Transmit -
3. Tr 7. Not Used
4. Not Used 8. Not Used

5X

3X

1X

1490_3

SEH Book Page 4 Tuesday, March 19, 1996 4:12 PM

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Содержание SEH-22

Страница 1: ...SEH 22 AND SEH 24 10BASE T STACKABLE HUB USER S GUIDE CABLETRON SYSTEMS P O Box 5005 Rochester NH 03866 5005...

Страница 2: ...served Printed in the United States of America Order Number 9031491 August 1995 SPECTRUM LANVIEW and Remote LANVIEW are registered trademarks and EPIM A EPIM C EPIM F1 F2 F3 EPIM T EPIM X HubSTACK Mic...

Страница 3: ...G Changes or modifications made to this device which are not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment DOC NOTICE This digital...

Страница 4: ...OF LIABILITY IF YOU DO NOT AGREE TO THE TERMS OF THIS AGREEMENT PROMPTLY RETURN THE UNUSED PRODUCT TO THE PLACE OF PURCHASE FOR A FULL REFUND CABLETRON SOFTWARE PROGRAM LICENSE 1 LICENSE You have the...

Страница 5: ...VEN IF CABLETRON HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES BECAUSE SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES OR ON THE DURATIO...

Страница 6: ...1 UNPACKING THE SEH 3 1 3 2 INSTALLING THE SEH 3 1 3 2 1 Tabletop or Shelf Installation 3 2 3 2 2 Rackmount Installation Requirements 3 3 3 2 3 Attaching the Strain Relief Bracket 3 4 3 2 4 Rack Mount...

Страница 7: ...M T A 1 A 1 2 EPIM F1 and EPIM F2 A 2 A 1 3 EPIM F3 A 3 A 1 4 EPIM C A 5 A 1 5 EPIM A and EPIM X AUI Port A 6 A 2 EPIM CABLE SPECIFICATIONS A 7 A 2 1 Multimode Fiber Optic Cable Specifications A 7 A 2...

Страница 8: ...pful when installing the SEH Chapter 1 Introduction outlines the contents of this manual briefly describes SEH features and concludes with a list of related manuals Chapter 2 Installation Requirements...

Страница 9: ...el for network connections while the SEH 24 has 24 RJ45 ports and two EPIM ports on the front panel for network connections Both models have two rear panel HubSTACK Interconnect Bus ports for stackabl...

Страница 10: ...ns problem segments and reconnects repaired segments to the network This feature minimizes the impact on network operation by isolating the problem segment Only devices on the problem segment are affe...

Страница 11: ...to four SEH hubs for a managed stack Hubs can be added or removed from the stack without powering down the entire stack 1 6 OPTIONAL FEATURES The following features are not included with the SEH but c...

Страница 12: ...ard directly after the part number as shown in Figure 1 2 Figure 1 2 EPIM Board Revision Number Table 1 2 EPIM Board Revision Requirements EPIM EPIM BOARD REVISION EPIM A Not Applicable EPIM C 05 or g...

Страница 13: ...CY KIT See Chapter 3 Installation for complete rack mounting instructions 1 7 RELATED MANUALS Use the following Cabletron Systems manuals to supplement the procedures and other technical data provided...

Страница 14: ...c Single Mode Fiber Optic or Thin Coaxial cabling For information concerning EPIMs refer to Appendix A The rear panel Interconnect Bus Ports support Cabletron Systems HubSTACK Interconnect cables for...

Страница 15: ...es between 5 and 10 MHz This includes the attenuation of the cables connectors patch panels and reflection losses due to impedance mismatches in the link segment Impedance Cabletron Systems 10BASE T T...

Страница 16: ...ise Noise is caused by either crosstalk or externally induced impulses Impulse noise may cause data errors if the impulses occur at very specific times during data transmission Generally the user need...

Страница 17: ...equirements must be met The transceiver or Ethernet Device to which the module will be connected must meet IEEE 802 3 standards and or Ethernet Version 1 0 or Version 2 0 standards The Signal Quality...

Страница 18: ...r to EPIM A 1 10 s Twisted Pair to Twisted Pair 1 00 s EPIM A to Twisted Pair 1 00 s Delay Times JAM Twisted Pair to EPIM A 960 ns Preamble Input Minimum of 40 bits required Output 64 bits min last 2...

Страница 19: ...segment without causing a collision Power Requirements The SEH uses a universal power supply The input power requirements are listed below The power supply has two outputs of 5 Vdc and 12 Vdc The maxi...

Страница 20: ...uirements of EN 50082 1 including IEC 801 2 ESD levels 1 through 4 IEC 801 3 Radiated Susceptibility levels 1 through 4 and IEC 801 4 EFT B levels 1 through 4 Physical Dimensions H x W x D 2 8 x 17 0...

Страница 21: ...pping box 2 Carefully remove the SEH from the shipping box 3 Remove the SEH from the protective plastic bag and set it aside to prevent damage 4 Visually inspect the SEH If there are any signs of dama...

Страница 22: ...seven feet of the location In a shelf installation the shelf must be able to support 30 pounds of static weight for each device in the stack The temperature for the selected location must be maintain...

Страница 23: ...SEH ACCY KIT Rack mounting the SEH involves Attaching the strain relief bracket Attaching the rackmount brackets Installing the SEH in a 19 inch rack Interconnecting SEH units when applicable Tools R...

Страница 24: ...cket and four 8 32 x 3 8 screws from the accessory kit see Figure 3 2 2 Attach the strain relief bracket to the bottom of the SEH Figure 3 3 Figure 3 3 Attaching the Strain Relief Rack Mounting Bracke...

Страница 25: ...mounting brackets to the bottom of the SEH as shown in Figure 3 4 Figure 3 4 Installing the Rack Mount Brackets 3 With the mounting brackets installed position the SEH between the vertical frame membe...

Страница 26: ...an SEH Interconnect Bus In Port female connector and an SEH Interconnect Bus Out Port male connector Daisy chain units together using Cabletron Systems HubSTACK Interconnect cables Table 3 1 describe...

Страница 27: ...of the SEHI 2 Attach the other end of SEHI HubSTACK Interconnect cable to the bus port labeled IN on the rear panel of the SEH next in the stack 1491_06 HubSTACK 10BASE T HUB WITH LANVIEW SEH 24 OUT...

Страница 28: ...7 This ensures that the HubSTACK Interconnect cable is terminated properly Figure 3 7 Disconnecting the HubSTACK Interconnect Cable Proceed to Section 3 3 to connect power SEH INTERCONNECT Disconnect...

Страница 29: ...s section contains procedures on how to add or replace an Ethernet Port Interface Module EPIM to upgrade or change the capabilities of your SEH After installing a new EPIM refer to the appropriate EPI...

Страница 30: ...the new EPIM into place making sure that the connectors on the rear of the EPIM align correctly and firmly with the connector inside the SEH Refer to Figure 3 8 3 Install the mounting screw Figure 3 8...

Страница 31: ...t apply to your SEH Network Ports SEH 22 and SEH 24 4 1 1 Connecting EPIMs to the Network 4 1 2 4 1 6 Prior to connecting the network cabling check the connectors for the proper pinouts as shown in Ch...

Страница 32: ...is off perform each of the following steps until it is on a Check that the 10BASE T device at the other end of the twisted pair segment is powered up b Verify that the RJ45 connector on the twisted p...

Страница 33: ...T crossover switch Figure 4 2 EPIM T Crossover Switch Connect an EPIM T to a Twisted Pair Segment as follows 1 Insert the RJ45 connector on the twisted pair segment into the RJ45 port on the EPIM See...

Страница 34: ...s to an EPIM F2 F3 keep in mind that ST connectors attach to ST ports much like BNC connectors attach to BNC ports Insert the connector into the port with the alignment key on the connector inserted i...

Страница 35: ...applicable receive port labeled RX on the module See Figure 4 3 3 Attach the fiber labeled 2 to the applicable port labeled TX on the module 4 At the other end of the fiber optic cable attach the fib...

Страница 36: ...labeled TERM to The ON position if the thin net segment connected directly to the port will be internally terminated at the port The OFF position o if the thin net segment will not be terminated at th...

Страница 37: ...Figure 4 4 The EPIM C Terminate each segment attached to the tee connector If a segment is not attached to one of the female connections on the tee connector place a terminator on that connection NOTE...

Страница 38: ...ransceiver connected to the network in step 1 3 Connect the AUI cable to the EPIM A See Figure 4 5 4 Lock the AUI connector into place using the connector slide latch Figure 4 5 The EPIM A Ensure that...

Страница 39: ...he device If the LED is still not on after reconnecting the segment contact Cabletron Systems Technical Support 4 1 6 Connecting an AUI Cable to an EPIM X To connect an EPIM X to a device not requirin...

Страница 40: ...now ready for operation Before placing the network into service test the installation thoroughly making sure that all stations can be addressed and that the SEH and all stations are indicating normal...

Страница 41: ...that the LNK LED if applicable for the port is on If the LED is off try the following steps a Check that the 10BASE T device at the other end of the twisted pair segment is powered up b Verify that t...

Страница 42: ...until a good packet is transmitted received without collisions If the LNK LED is still not on contact Cabletron Systems Technical Support 5 2 USING LANVIEW The SEH incorporates the Cabletron Systems L...

Страница 43: ...uld be with the SEH LED Name PWR Power MGMT Management CLN Collision RCV Receive LNK Link LED Color Off Green Solid Green Flashing Off Red Yellow Flashing Off Green Off Definition No power Power SEH m...

Страница 44: ...ion has occurred on one of the ports RCV Yellow Flashing When this LED flashes it indicates that the SEH is receiving data packets from the associated port segment Each SEH port has a corresponding RC...

Страница 45: ...ng It has an internal Cabletron Systems TPT T 10BASE T Twisted Pair Transceiver The slide switch on the EPIM T determines the cross over status of the cable pairs If the switch is on the X side the pa...

Страница 46: ...e Peak Power Levels after optical overshoot Use a Peak Power Meter compare the values given above to those measured on any particular port If Power Levels are being measured with an Average Power Mete...

Страница 47: ...e listed on the following page Figure A 3 EPIM F3 Note Transmitter Power decreases as temperatures rise and increases as temperatures fall Use the Output Power Coefficient to calculate increased or de...

Страница 48: ...Maximum Transmitter Peak Wave Length 1300 nm 1270 nm 1330 nm Spectral Width 60 nm 100 nm Rise Time 3 0 ns 2 7 ns 5 0 ns Fall Time 2 5 ns 2 2 ns 5 0 ns Duty Cycle 50 1 49 6 50 7 Bit Error Rate Better...

Страница 49: ...ettings for the terminator switch Figure A 4 EPIM C Connector Type BNC receptacle with gold center contact for use with BNC type tee connectors and RG 58 thin net cable Grounding The BNC port of the C...

Страница 50: ...nternal transceivers It has a DB15 male connector used to attach segments to an AUI cable Figure A 5 shows both modules Figure A 5 The EPIM A and EPIM X DB15 Pinouts Pin 1 Logic Ref 9 Collision 2 Coll...

Страница 51: ...e fiber optic budget delay and total network propagation before fiber optic cable runs are incorporated in any network design Fiber optic budget is the combination of the optical loss due to the fiber...

Страница 52: ...ngth the fiber optic budget total loss of 10 0 dB or less between stations and total network propagation delay must be considered before fiber optic cable runs are incorporated in any network design P...

Страница 53: ...mum of 29 tee connectors may be used throughout the length of cable segment for host connections If an excessive number of barrel connectors are used within the cable segment such as finished wall pla...

Страница 54: ...EPIM A or EPIM X the AUI cable must meet the following requirements AUI Cable The cable between the module and device must be IEEE 802 3 type cable Length The AUI Cable must not exceed 50 meters in le...

Страница 55: ...IM F1 A 2 EPIM F2 A 2 EPIM F3 A 3 EPIMs 1 4 EPIM T A 1 EPIM X A 6 H HubSTACK Interconnect Cables 1 6 I Installing the SEH 3 1 L LANVIEW LEDs 5 3 N Network Port Specifications 2 4 P Polarity Detection...

Страница 56: ...die Anwendung des Geraetes geeignet und der zum Benuetzen im Lande der Anwendung anerkannt ist SPANISH El cable principal de la red el ctrica utilizado con este equipo debe tener 2 conductores y 1 to...

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