User`s guide

2-4
Installing and Connecting to the Network
Figure 2-2. Rack-Mounting The ATX
2.3 CONNECTING THE POWER SUPPLY
The ATX utilizes a two power supply system. A primary power
source provides the ATX with power. You can purchase an
optional, redundant power supply as well. If you use both power
supplies, they supply power on a load-sharing basis. If one power
supply fails, the remaining power supply automatically provides
all the necessary power.
To connect the ATX to an external power source (100 to 120 Vac or
200 to 240 Vac at 47 to 65 Hz), follow the steps below:
1. When using one power supply, plug the power cable into the
power socket labeled SUPPLY A on the back of the ATX. When
using an optional second power supply, connect its power
cable to the SUPPLY B socket on the back of the ATX.
2. Connect the power cable(s) to an outlet.
Note: It is a good idea to connect the two power supplies to sockets on
separate breakers so they will not be dependent on the same power
circuit. Using separate circuits allows the ATX to continue to
operate if there is a problem with power from one circuit.
3. Turn on the power supply (or power supplies).
Layer 1RING 4
QUAD IEEE 802.3 ETHERNET 10 BASE 2
HIGH SPEED SERIAL INTERFACE / RS-449
PROC
PWR
RX ST
TX 16
PROC
PWR
PROC
PACKET PROCESSING ENGINE
POWER
DCE RX
LINK TW
RX ST
TX 16
RING 3
RX ST
TX 16
RING 2
RX ST
RX
TX
RING 1
SEGMENT 1
RX
TX
SEGMENT 2
HSSI
HSSI
OPTICAL BYPASS
RS-449
RS-449
NMS PORT
RING A
FDDI MIC A FDDI MIC B
RING B
ACT THRU WRAP ACT THRU WRAP POWER STATUS RX TX
POWER STATUS ENGINE STATUS TURBO STATUS SUPPLY A SUPPLY B RESET
RX
TX
SEGMENT 3
RX
TX
SEGMENT 4
Elite SwitchingHub ES/1
?
PWR
OFFLINE
OFFLINE
OFFLINE
Port Status
10BASE-T Ports 13-2410BASE-T Ports 1-12
Port
Select
RX
TX
Proc
Coll
Fasteners
Fasteners
Rack
ES/1
ATX