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19

3.2 10BASE2 PORTS

The BOCAHUB-24 Plus has one 10BASE2 (BNC)
connector which interfaces directly to a 10BASE2
(“thin” Ethernet) network. The 10BASE2 connection
must be to RG58 A/U or C/U 50-ohm coaxial cable.
The ends of the cable segment must have 50-ohm
terminators installed. Up to 30 connections (taps) can
be made to a 10BASE2 segment. The BOCAHUB-24
Plus is connected to a 10BASE2 segment with a BNC
T-connector, which is illustrated on the next page.

Network Configuration

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Содержание BOCAHUB-24 Plus

Страница 1: ...1 Boca s Family of Ethernet Products BOCAHUB 24 Plus Installation Guide PRODUCT CODE BEN240 tm...

Страница 2: ...2 BOCAHUB 24Plus...

Страница 3: ...IT you should check your DOS manual or seek assistance from you local computer dealer to install the product How to get Technical Assistance The dealer that you purchased this product or your computer...

Страница 4: ...he product you purchased is of the highest caliber Sometimes however a component may be missing from the box or is damaged or corrupt in some way If this happens immediately return the entire package...

Страница 5: ...7 Cascaded Network with Routers 25 3 8 Expanded Network 26 Section Four Cabling Characteristics 28 4 1 Cable Type 28 4 2 10BASE T Pin Assignments 29 4 3 Crossover Function 30 4 4 Straight Through Wir...

Страница 6: ...nt with IEEE 802 3 standards Its highly integrated solution constantly monitors signal quality ensuring increased network reliability The case is designed for desktop usage rack or wall mounting Multi...

Страница 7: ...Link FOIRL segments with appropriate adapter Fully compliant with IEEE 802 3 specifications Easy installation and setup Supports automatic partitioning the logical disabling of ports that experience...

Страница 8: ...d packet on its receive lines then the BOCAHUB 24 Plus will re transmit the received data to all other enabled network ports Signal Regeneration When re transmitting a packet the BOCAHUB 24 Plus ensur...

Страница 9: ...he front of the BOCAHUB 24 If any ports are currently partitioned the corresponding LED will turn on Link Test The BOCAHUB 24 Plus implements the Link test function as specified in the 802 3 10BASE T...

Страница 10: ...LED indicates a busy network COL This red LED lights whenever two or more ports are receiving data at the same time i e collision In this situation the BOCAHUB 24 Plus partitions isolates the collidi...

Страница 11: ...o o o o o o o o o o o o o o o o o o o o o o 0 o o o o o o o o o o o o o o o o o o o o BOCAHUB 24 PLUS 1234 1234 17 18 19 20 21 22 23 24 123 123 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1...

Страница 12: ...This connector is used to interface with 10BASE5 thick Ethernet coaxial cable 10BASE2 thin Ethernet coaxial cable 10BASE T or 10BASE F segments with an appropriate adapter 1 BNC PORT Used to connect t...

Страница 13: ...end to any conveniently accessible wall outlet BOCAHUB 24 Plus AC Power cord BNC T Connector 2 stacking brackets 2 rack mounting angles 123 123 123 123 123 8 4 40 x 1 4 Phillips pan head screws o o o...

Страница 14: ...ation options turn to the next page o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o 0 o o o o o o o o o o o o o o o o o o o BOCAHUB 24 PLUS REAR OF BOCAHUB 24 Plus AC Power connector...

Страница 15: ...stacking brackets stacking brackets You will need one pair of rack mounting angles for every BEN240 case you mount to the wall Attach the 1 1 2 angle portion 4 holes to two sides of the case using the...

Страница 16: ...N240 case you attach to a rack Attach the 1 1 2 angle portion 4 holes to two sides of the case using the 4 40 1 4 screws included Attach the 7 8 angle portion 2 holes to attach the assembly to the ver...

Страница 17: ...other hubs or workstations This connection uses an RJ 45 8 pin connector When connecting to workstations a straight through connector is used When connecting to other hubs a crossed cable is used Con...

Страница 18: ...34 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 123 123 123 1234 1234 1234 1234 1234 1234 1234 1234 1234 123 123 123 1234 1234 1234 1234 1234 1234 123 123...

Страница 19: ...e 10BASE2 connection must be to RG58 A U or C U 50 ohm coaxial cable The ends of the cable segment must have 50 ohm terminators installed Up to 30 connections taps can be made to a 10BASE2 segment The...

Страница 20: ...For Installation at the end of a 10BASE2 Segment 10BASE2 Cable Thin Ethernet BNC T Connector 10BASE2 Cable Thin Ethernet 10BASE2 Cable Thin Ethernet BNC T Connector Connect to coax port on BOCAHUB 24...

Страница 21: ...10BASE5 but can also be used to interface with other types of networks such as 10BASE2 10BASE T or 10BASE FL A sample connection is shown below Network Configuration 10BASE5 Thick Ethernet Backbone Tr...

Страница 22: ...nt types of topologies can co exist in one network using the BOCAHUB 24 Plus Following are some sample network arrangements using multiple topologies Note When cascading concentrators there should be...

Страница 23: ...o o o o o o o o o o o o o o o o o o o 0 o o o o o o o o o o o o o o o o o o o BOCAHUB 24 PLUS 3 5 SINGLE WORKGROUP CONFIGURATION NOTE File server can plug into any port on the BOCAHUB 24 Plus 10BASE T...

Страница 24: ...o o o o o o o o o o o o o BOCAHUB 24 PLUS o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o 0 o o o o o o o o o o o o o o o o o o o BOCAHUB 24 PLUS o o o o o o o o o o o o o o o o o o...

Страница 25: ...o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o 0 o o o o o o o o o o o o o o o o o o o BOCAHUB 24 PLUS o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o 0 o o o o o o o...

Страница 26: ...CKBONE 10BASE5 10BASE2 50 ohm Terminator 50 ohm Terminator 10BASE2 thin Ethernet Segment maximum 30 stations Server o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o 0 o o o o o o o o...

Страница 27: ...E2 50 ohm Terminator 10BASE2 thin Ethernet Segment maximum 30 stations 50 ohm Terminator Network Configuration o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o 0 o o o o o o o o o o o...

Страница 28: ...m 50 ohm Shielded 625 125 M Twisted pair coax coax Twisted pair type A1b 8 pairs 22 26 AWG RG58 RG11 0 4 0 6 mm A U or A U or 2 pairs C U C U Connector Connector Connector Connector Connector 8 pin RJ...

Страница 29: ...e pins 3 and 6 are for receiving data See chart below RJ 45 Assignment RJ 45 Assignment 1 Tx 1 Rx 2 Tx 2 Rx 3 Rx 3 Tx 6 Rx 6 Tx The and signs are used to represent the polarity of the two wires that m...

Страница 30: ...24x is crossed to simplify installation when cascading concentrators This port is labelled 24x and located on the front of the BOCAHUB 24 Plus below the Boca Research logo WARNING do NOT use port 24 a...

Страница 31: ...wires must be straight through STRAIGHT THROUGH RJ 45 PIN ASSIGNMENTS 8 pin RJ 45 10 pin RJ 45 Concentrator Device Concentrator Device X 1 Rx 1 Tx 2 Rx 2 Tx 2 Rx 2 Tx 3 Rx 3 Tx 3 Tx 3 Rx 4 Tx 4 Rx 6 T...

Страница 32: ...eive data pair has the and signals unintentionally reversed the BOCAHUB 24 Plus automatically detects and adjusts this reversal so the data path will function properly Bottom of plug 10 pin RJ45 Conne...

Страница 33: ...lision LED one Activity LED one AUI LED one BNC LED and one Option LED o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o 0 o o o o o o o o o o o o o o o o o o o o BOCAHUB 24 PLUS o o o...

Страница 34: ...sly for a given port IF the port is not partitioned If the LED is ON the associated device has been isolated from the network because of excessive collisions concentrator receiving data from two or mo...

Страница 35: ...AUI OPT BOCAHUB 24 Plus has power A network collision has been detected BOCAHUB 24 Plus is receiving data from two or more devices at the same time The BOCAHUB 24 Plus is receiving data from one or m...

Страница 36: ...wall outlet Make sure the wall outlet has power Try another AC power cord that you know works If the Power LED still fails to come ON the BOCAHUB 24 Plus may be faulty Call Technical Support IF THE L...

Страница 37: ...with latch using shielded twisted pair Connectors 24 10BASE T ports using RJ 45 unshielded twisted pair maximum cable length 328 1 10BASE2 port with BNC connector maximum cable length 607 1 AUI port w...

Страница 38: ...nvironment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications...

Страница 39: ...N 8 1 If you have a modem the BBS may be helpful especially during off hours if you have a question about product settings or compatibility or if you wish to download driver software or utilities If...

Страница 40: ...8 00 a m and 6 30 p m EST Monday through Friday at 407 241 8088 A technical support specialist will be available to discuss the problem s you are experiencing If factory service is required you will...

Страница 41: ...ctive but will not replace such parts until specific written authorization is received from you The cost of parts and labor involved in making such repairs will be billed to you C O D 5 When sending t...

Страница 42: ...at any time without notice Trademarks All Boca Research products are trademarks of Boca Research Inc All other references to computer systems software and peripherals use trademarks owned by their res...

Страница 43: ...ts become the property of BRI If the returned product is sent by mail the purchaser agrees to prepay shipping charges insure the product or assume the risk of loss or damage which may occur in transit...

Страница 44: ...ly designated to send and receive messages AUI Connector Attachment Unit Interface 15 pin D connector for use with external transceivers such as 10BASE5 or fiber optics Backbone Cable on which two or...

Страница 45: ...by the Xerox Corporation File Server A device on a LAN that provides mass storage of files A file server can be dedicated only performs network management functions or non dedicated where user applic...

Страница 46: ...ators are required because there are no unconnected ends Server A computer that provides shared resources such as files and printers to the network Star Topology A network topology in which nodes are...

Страница 47: ...47...

Страница 48: ...48 BOCAHUB 24Plus Manual Part 9445 Rev 2 0...

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