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to twist a 50-ohm terminator onto the remaining
open leg of the BNC T.

Sometimes several Ethernet Hubs must be co-
located to support a larger array of stations than
can be handled by a single Ethernet Hub.  Then it
is useful to stack the 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.

Summary of Contents for 816TP - Hub - EN

Page 1: ...g 3 Installing Network Cables 4 Station Connections with Twisted Pair Cable 5 Hub to Hub Connections with Twisted Pair Cable 6 Thin Coaxial Cable Connections 8 Thick Coaxial Cable Connections 10 Connecting Power 10 LED Indicators 11 Specifications 13 ...

Page 2: ... Hubs are all Plug and Play compliant for easy installation DE812TP DE 816TP 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 ...

Page 3: ...d 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 ...

Page 4: ...ough the Ethernet Hub s numbered front 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 u...

Page 5: ...nnections with Twisted Pair Cable Connect each station to the Ethernet Hub by means of a twisted pair straight cable 10BaseT cable Category 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 ...

Page 6: ...ternal 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 stra...

Page 7: ...1 is then identical with each of the twenty three other numbered ports When the Uplink switch is in the on depressed position a pin interchange is switched into the wiring for the Port 1 connector to provide a cross over and thus allow use of a straight cable to make a hub to hub connection Below in this manual the term Uplink selected will mean as to the Model DE 824TP Ethernet Hub in question th...

Page 8: ... cable and Uplink must not be selected at the other end of the cable To make a hub to hub connection with a cross over cable Uplink must not be selected at either end of the cable Thin Coaxial Cable Connections To connect the Ethernet Hub to a thin coaxial cable 10Base2 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 r...

Page 9: ...b Then it is useful to stack the 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 be...

Page 10: ...of the Ethernet Hub 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 100 250 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 r...

Page 11: ...or will ordinarily be managed by the offending Ethernet adapter itself in which case the Jabber LED will return 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 Collision LED is normal the contending adapters resolve each collision by mea...

Page 12: ... Link Rx LED is dark check whether 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 ...

Page 13: ...P FCC Class B VCCI II CE B AC power 100 250 V 50 60 Hz Power consumption DE 812TP 18 W DE 816TP 18 W DE 824TP 20W Dimensions W x H x L mm including mounting brackets DE 812TP 483 x 44 x 125 DE 816TP 483 x 44 x 125 DE 824TP 483 x 44 x 211 Weight DE 812TP 2 0 kg DE 816TP 2 0 kg DE 824TP 3 03 kg Operating temperature 0 55 C Humidity 10 90 non condensing ...

Page 14: ...Power cord Type 1 US or Type 2 Europe per purchase order Type 1 Type 2 Plug Rating Cord Rating Length Safety Standard 125V 7A 125V 7A 1830mm 6ft UL CSA 250V 10A 250V 10A 1830mm 6ft VDE ...

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