User Manual

3-26 Configuring, Installing, and Using Base Stations
Continue to use the daisy chain wiring scheme to connect the remaining base
stations, until all of the base stations within the cell are connected to each other.
On the last base station in the daisy chain, connect the load termination on the
open GPS connection.
Connecting to the backbone network
The base station connects to a TVS module. You then connect the TVS module to
your network. Typically, base stations connect to a level 2 switch at the cell site,
using a 10BaseT connection. The switch controls the base station data traffic to
and from the backbone network.
Connect the switch to the backhaul network using the appropriate cabling.
Powering base stations
This section describes tips for powering base stations, as well as the component
connection sequence you need to use to properly power base stations.
Powering tips
• It is recommended that you use a redundant power supply for base stations.
• Each base station requires 48 volts DC at 3.0 amps maximum
• Depending on the type of equipment you own, supply power to the Ethernet
switch and backbone network equipment.
• It is recommended that you use an uninterruptable power supply (UPS).
Tips for sizing the UPS include:
• Size the voltage and amperage of the power supply according to the number
of base stations at your cell site.
• Size the UPS according to the efficiency of the DC power supplies and
power requirements of the other ancillary equipment, such as the Ethernet
switch and backbone network equipment.
• Consider the time you want to allow the system to operate on the UPS.