Installation manual
AT-30xxTR Multiport Repeater
21
BNC Bus Bussing of the AT-30xxTR multiport repeater is another possibility. You can
accommodate more nodes on your network if you connect the repeaters
through the BNC network port. Note that the worst case, node to node, is
through only two repeaters; one provides the UTP station linkage to thinnet,
and the second repeater connects thinnet through the BNC bus to the AUI
cable. On 10BASE2 thin Ethernet, up to 30 AT-30xxTR Hubs may be
connected in this way, as shown in Figure 17.
Figure 17: Hubs on a Backbone
Using the BNC Network Port
12 UTP Segments
12 UTP Segments
12 UTP Segments
12 UTP Segments
50 Ω
Terminator "ON"
BNC-T
Connector
123456 789101112
XXXXX XXXXXX
ACTIVITY
COLLISION
POWER
123456789101112
123456789101112
TERMINATOR
OFF
ON
PORT OK
RECEIVING
PORT OK
RECEIVING
PORT OK
RECEIVING
POWER
10BASE-T NETWORK PORTS 10BASE-T PORT ACTIVITY STATUSAUIBNC
1
2
3
6
1
2
3
6
1
2
3
6
1
2
3
6
MDI MDI-X
IEEE 802.3/ETHERNET
10BASE-T
MULTIPORT REPEATER
123456 789101112
XXXXX XXXXXX
ACTIVITY
COLLISION
POWER
123456789101112
123456789101112
TERMINATOR
OFF
ON
PORT OK
RECEIVING
PORT OK
RECEIVING
PORT OK
RECEIVING
POWER
10BASE-T NETWORK PORTS 10BASE-T PORT ACTIVITY STATUSAUIBNC
1
2
3
6
1
2
3
6
1
2
3
6
1
2
3
6
MDI MDI-X
IEEE 802.3/ETHERNET
10BASE-T
MULTIPORT REPEATER
123456 789101112
XXXXX XXXXXX
ACTIVITY
COLLISION
POWER
123456789101112
123456789101112
TERMINATOR
OFF
ON
PORT OK
RECEIVING
PORT OK
RECEIVING
PORT OK
RECEIVING
POWER
10BASE-T NETWORK PORTS 10BASE-T PORT ACTIVITY STATUSAUIBNC
1
2
3
6
1
2
3
6
1
2
3
6
1
2
3
6
MDI MDI-X
IEEE 802.3/ETHERNET
10BASE-T
MULTIPORT REPEATER
123456 789101112
XXXXX XXXXXX
ACTIVITY
COLLISION
POWER
123456789101112
123456789101112
TERMINATOR
OFF
ON
PORT OK
RECEIVING
PORT OK
RECEIVING
PORT OK
RECEIVING
POWER
10BASE-T NETWORK PORTS 10BASE-T PORT ACTIVITY STATUSAUIBNC
1
2
3
6
1
2
3
6
1
2
3
6
1
2
3
6
MDI MDI-X
IEEE 802.3/ETHERNET
10BASE-T
MULTIPORT REPEATER
Ethernet
Transceiver
Coaxial Ethernet (10BASE5)
AUI Cable
50 Ω
Terminator "OFF"
50 Ω
Terminator "OFF"
50 Ω
Terminator "ON"