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Electra Elite
System Hardware Manual
5.9.3
Cabling
The information listed below applies when connecting the
VDH2(8)-U( ) ETU.
Normally the 10Base-T cables connected to the
VDH2(8)-U( ) ETUs cannot be directly connected to
another HUB or to a LAN terminal. Jumpers are
provided for the VDH2(8)-U( ) to turn off the station
abilities for ports 1~7. In this case, LAN terminals can
be connected directly to the VDH2(8)-U( ) ETU. Refer
to
Figure 5-49 VDH2(8)-U( ) ETU Jumpers
layout of jumpers on the KTU.
Port 8 is unique because the station abilities cannot
be separated by changing a jumper like ports 1~7.
Port 8 is used for cascading HUBs. Connect Port 8
either to another VDH2(8)-U( ) (Port 1~7) or an
external HUB. For this case, be sure to set SW2 on
the VDH2(8)-U( ) to =. If SW2 is set to X, then Port 8
is used as a regular coreline connection. Refer to
Figure 5-50 10Base-T Cable
The VDH2(8)-U( ) ETU can be used with 10Base-2
and 10Base-T cables. VDH2(8)-U( ) ETU HUBs can
be cascaded using 10Base2 cables. The 10Base2
connector can also be used to connect the
VDH2(8)-U( ) ETU to a LAN backbone. (Refer to
Figure 5-51 VDH2(8)-U( )
port is still used for coreline. The 10Base2 cable
interconnecting VDH2(8)-U10 ETUs must be greater
than 0.5 meters. The 10Base2 cables should be
neatly coiled. When the 10Base2 cables are
connected to the VDH2(8)-U( ) BNC connector, a
terminating plug must be used for the last device on
the cable. Refer to
Connectors.
Using the 10Base-2 cables is the preferred method of
cascading VDH2(8)-U( ) ETU hubs because it does
not reduce the quantity of station ports that the ETU
can provide.
Connections.
ETU.) In these cases the 8
Figure 5-52 VDH2(8)-U( ) ETU
Issue 6
for the
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