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connection involving a Model DE-816TP or Model

DE-824 Ethernet Hub, there is the alternative of
using a straight cable.

Internal Crossover Features

The Model DE-816TP Ethernet Hub and  DE-
824TP Ethernet Hub feature internal cross-over

alternatives for Port 1:

+

Model  DE-816TP  Ethernet Hub

The port numbered as Port 1 is identical with

each of the other numbered ports. But Port 1

is specially equipped with an alternative
connector,  labeled  “Uplink.”

The  Uplink

connector is wired to the same conductors as

the Port 1 connector, but with certain pin
positions interchanged to provide a cross-

over, and thus allow use of a straight cable to
make a hub-to-hub connection.

Keep in mind that the  Uplink  connector is not
an independent-port. It is only an alternative

connector to Port 1, to facilitate hub-to-hub

cabling. Port 1 is fully occupied whenever (1)
a hub-to-hub connection is made through its

Uplink  connector, or (2) any kind of
connection is made directly through the Port

1 connector

Below in this manual, the term  “Uplink

selected” will mean, as to the Model  DE-
816TP Ethernet Hub in question, that the

subject connection is made through the

Uplink  connector

5

Summary of Contents for DE-81 6TP

Page 1: ......

Page 2: ...k Cables 3 Station Connections with Twisted Pair Cable 4 Hub to Hub connections with Twisted Pair Cable 4 Thin Coaxial Cable Connections 7 Thick Coaxial Cable Connections 9 Connecting Power 9 LED Indicators 10 Specifications 11 Rev 06 April 98 6DE824TP 06 Printed In China ...

Page 3: ...ubs are all Plug and Play compliant for easy installation DE81 2TP DE 81 6TP DE 824TP When designing your cable configuration it is necessary to strictly observe the Ethernet cabling rules This manual assumes familiarity with the fundamental Ethernet cabling rules and limits it only describes the details of cable connection 1 ...

Page 4: ... in a standard 19 inch equip ment rack Rack mounting produces an orderly installation when you have a number of related network devices Use the six supplied screws to fasten the supplied mounting brackets to either end of the hub then fasten the hub into the rack 2 ...

Page 5: ... panel ports Alternatively you can connect into an existing star topology through a front panel port of the Ethernet Hub and then add on a bus topology subnet by connecting the subnet bus to a rear panel connector of the Ethernet Hub irrespective of any star topology subnet that may also be supported by the Ethernet Hub s front panel ports In either case the unused rear panel connector always rema...

Page 6: ...egory 3 4 or 5 Plug one RJ 45 connector into a front panel port of the Ethernet Hub and plug the other RJ 45 connector into the station s Ethernet adapter w UTP cable RJ 45 connector Hub to hub connection between Model DE 812TP Ethernet Hubs requires a 1OBaseT crossover cable In making a hub to hub 4 ...

Page 7: ...o the same conductors as the Port 1 connector but with certain pin positions interchanged to provide a cross over and thus allow use of a straight cable to make a hub to hub connection Keep in mind that the Uplink connector is not an independent port It is only an alternative connector to Port 1 to facilitate hub to hub cabling Port 1 is fully occupied whenever 1 a hub to hub connection is made th...

Page 8: ...m Uplink selected will mean as to the Model DE 824TP Ethernet Hub in question that the subject connection is made through Port 1 and the Uplink switch is in its on depressed position Rules for Using the Uplink Feature Uplink should never be selected for a station cable connection And Uplink should never be selected for a hub to hub connection through a crossover cable because the crossover in the ...

Page 9: ... of the cable To connect the Ethernet Hub to a thin coaxial cable lOBase2 cable also known by its wire standard name RG58A U and a variety of other informal names first twist a BNC T connector onto the rear panel BNC connector of the Ethernet Hub Then twist the shell of the cable s connector onto either leg of the BNC T If the thin coaxial cable continues on to other nodes then twist the shell of ...

Page 10: ...Ethernet Hubs by joining their BNC connectors with 0 5 meter patches of thin coaxial cable Such stacking is just a special case of thin coaxial cable connection as treated above and the terminator rule is the same If the stack is at the end of the incoming cable then a 50 ohm terminator must be substituted for the continuation cable shown in the stacking diagram below T o next node 8 ...

Page 11: ...able x Transceiver Connecting Power For compatibility with electric service in most areas of the world the Ethernet Hub s power supply automatically adjusts to line power in the range 100 240 VAC and 50 60 Hz Per ordering option either a Type 1 US or Type 2 European power cord is supplied with your Ethernet Hub See Spefications below for power cord details Ascertain that the power switch on the re...

Page 12: ...data packet that is defective exceeds allow able length This kind of error will ordinarily be managed by the offending Ethernet adapter itself in which case the Jabber LED will re turn to its normal off dark state Collision LED One Collision LED for all ports A collision occurs when two stations within a collision domain attempt to transmit at the same time Intermittent flashing yellow of the Coll...

Page 13: ...ther 1 the Ethernet Hub and the partner device both have power 2 the port s cable is firmly seated in its connectors in the Ethernet Hub and in the partner device 3 the connecting cable is good and is of the correct type and 4 the partner device including any network adapter is functioning Specifications Data transfer rate 10 Mbps Protocol CSMA CD Topologies Star Bus EMI Certification I FCC Class ...

Page 14: ...44 125 DE 81 6TP 483x44 125 DE 824TP 483x44 211 DE 81 2TP 2 0 kg DE 816TP 2 0 kg DE 824TP 3 03 kg 0 55 c Humidity 10 90 non condensing I Power cord Type 1 US or Type 2 Europe per Plug Rating 125V 7A 25OV 1OA Cord Rating Length 125V 7A 25OV 10A 1830mm 6ft 1830mm 6ft VDE Safety Standard UL CSA 1 2 ...

Page 15: ...7 24 Stockholm Sweden Tel 46 08 70062 11 Fax 46 08 219640 Unit 16 390 Eastern Valley Way Roseville NSW 2069 Australia Tel 61 2 9417 7100 Fax 61 2 9417 1077 Naverlnnd 2 DK 2600 Glostrup Copenhagen Denmark Tel 45 43 96 90 40 Fax 45 43 42 43 47 77 Science Park Drive 03 03 CINTECH HI Singapore Science Park Singapore 118256 Tel 65 7746233 Fax 65 7746322 lOF 8 8 15 Nishgotsndn Shinagwa ku Tokyo 141 Japa...

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