2 • Hardware installation
Model LRA2900A RAS Getting Started Guide
25
Cable installation
3. Repeat steps 1 and 2 to install the remaining power cable.
Grounding the Model LRA2900A
Do the following:
1. Assemble a ground wire using #10 AWG wire with green-colored insulation and two ring terminals. Make
the wire long enough to reach one of the following ground sources:
– The building ground rod (generally located at the site’s main service entrance)
– A sprinkler system pipe
– A cold-water pipe
– Building structural steel
2. Install the ground wire between the grounding stud (see figure 6) and the grounding source.
Connecting the Ethernet ports
The RAS has a single 10/100 Ethernet interface for connection to your LAN (see figure 7). The Ethernet port
will autosense the correct speed of the local LAN and automatically negotiate half- or full-duplex operation.
This section describes connecting the RAS to the Ethernet LAN via an Ethernet hub, switch, or workstation.
Figure 7. Model LRA2900A network and configuration ports
To avoid the risk of personal injury, the distance between ground and the
equipment rack must not exceed the distance specified in either local electrical
codes or the National Electrical Code.
10/100 ETHERNET
(RJ-45 connector)
RS-232 CONFIG
(RJ-45 connector)
(EIA-561)
T1/E1/PRI WAN PORTS
(RJ-48C connectors)
10/100
ETHERNET
RS-232
CONFIG
T1/E1/PRI WAN PORTS
1
2
3
4
EXPANSION MODULE