Installation
6
Table 1: AT-30xxTR Model Types
AUI Network Port
Each AT-30xxTR repeater has one Attachment Unit Interface (AUI) port to
accommodate a 10BASE5 or thick Ethernet connection to the network
backbone via a drop cable.
BNC Network Port
Each AT-30xxTR repeater has one Bayonet Nut Couple (BNC) port to
accommodate a 10BASE2 or thin Ethernet connection to the network
backbone via a link segment.
LED Indicators
Hub Status
Indicators
A three-high LED at the far right of the front panel, next to the power
receptacle, indicates the overall status of the repeater unit. See Figure 5 for
location of these indicators.
Power
(green)—The top LED illuminates when power is applied.
Activity
(green)—The middle LED indicates that the repeater is functional
and is transmitting packets.
Collision
(yellow)—The bottom LED will flicker to indicate collision.
Occasional collisions are normal in Ethernet networks. Excessive collisions is
an indication of possible segment problems. A constantly illuminated Collision
LED may indicate that there is a port, cabling, or excessive traffic problem.
Model Number
Number of
Station Ports
Specification
AT-3012TR
12
Single bank of two 1x6 units
AT-3016TR
16
Single bank of four 1x4 units
AT-3024TR
24
Double-stacked; two banks of 1x12 units
Figure 5: AT-30xxTR
Hub Status LEDs
1
2
3
4
5
6
7
8
9
10
11
12
X
X
X
X
X
X
X
X
X
X
X
ACTIVITY
COLLISION
POWER
1
2
3
4
5
6
7
8
9
10 11 12
1
2
3
4
5
6
7
8
9
10 11 12
TERMINATOR
OFF
ON
PORT OK
RECEIVING
PORT OK
RECEIVING
PORT OK
RECEIVING
POWER
10BASE-T NETWORK PORTS
10BASE-T PORT ACTIVITY
STATUS
AUI
BNC
1
2
3
6
1
2
3
6
1
2
3
6
1
2
3
6
MDI
MDI-X
IEEE 802.3
/ETHERNET
1
0BASE-
T
MUL
TIPORT REPEA
TER
ACTIVITY
COLLISION
POWER
STATUS
