User Manual

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Connecting the antenna to the base station
This section provides tips you can use to connect the antenna to the base station for
installations where the antenna is not mechanically mounted to the Integrated Base Station
It also provides step-by-step instructions for connecting the components to each other.
Antenna connection tips
Use the following tips when connecting the base station to the antenna:
• You connect the antenna to the base station using a coaxial cable. The size of the cable
depends on the distance between the base station and the antenna.
• The greater the distance, the larger your coaxial cable needs to be, in order to maintain
low signal loss.
• It is recommended that you keep signal loss to a minimum. At a maximum, the signal
loss should be no more than 2 to 3 dB, including all coaxial cable and connectors.
• Use short coaxial jumpers from the base station to the main coaxial line, and from the
main coaxial line to the antenna. It is recommended you use 1/2 inch flexible line, of the
shortest length possible, while still allowing the flexibility to make a good connection.
• The base station contains an antenna connector with a 1/4 inch wave stub lightning
protector. You do not need to place an external lightning protector in the coaxial cable.
Connecting the antenna to the base station
To attach the antenna to the base station:
1 Mount the antenna according to the manufacturer’s instructions.
2 Connect one end of a short coaxial jumper to the antenna. Connect the other jumper end
to the main coaxial cable.
3 On the base station’s antenna connector, connect one end of a short coaxial jumper.
Connect the other jumper end to the main coaxial cable coming from the antenna.
4 Make sure the coaxial line is properly grounded.
5 Properly seal the co-axial connections with weatherproof components, tape and wrap.
Connecting the GPS equipment to a base station
The GPS equipment provides a time synchronization signal to the base station. This signal is
needed to ascertain the proper timing for time division duplexing (TDD).
The equipment is a smart antenna in a sealed, shielded, self-contained unit that houses a GPS
receiver, GPS antenna, and interface circuitry.
When powered, the GPS provides accurate time, with a time pulse of one pulse per second,
synchronized to Universal Time, Coordinated (UTC) within 150 nanoseconds.
GPS equipment mounting tips
You must use the NextNet Wireless supplied GPS system to supply a time synchronization
signal to the base stations in a cell. You cannot use a GPS from another manufacturer.