User's Manual

Carlson Wireless USA revision 2.12 Page 8
INSTALLATION
Note that the installation of the FXO and FSO units are quite similar
(1) Connecting the feed cable to the outside unit. Begin by removing
the 4 front cover screws. Now remove 2 upper screws holding the hinged
backplate. The backplate will now hinge down exposing the electronics
section. Notice there are 2 circuit boards stacked together. The top board
contains the digital radio and interface with the lower board containing the
power supply and analog interface. There are two screw down terminal
blocks on the left side. One block has 2 connections and it is where the
DC power supply connects. The other block has 4 connections, for tele-
phone lines 1 and 2. The following diagram shows how to wire the con-
nectors.
TIMESAVER TIP! By installing the FXO unit first, you can test the sys-
tem locally by temporarily connecting the FXS unit up at the FXO site and
proving your connections. This can greatly simplify any trouble shooting
you may have later.
Carlson Wireless USA revision 2.12 Page 9
(3) Lightning protection. Grounding of the drain wire: For feed cable
runs of less than 35 feet (10m) and not located in a highly active lightning
area, connecting the bare drain wire to a copper clad ground rod driven at
least 6 feet (2m) into moist earth with a short copper #8 AWG wire at the
point of the terminal block may suffice. The antenna mast must also be
grounded in the same fashion by a separate grounding rod. However if
the run is longer than 35 feet or the location is in a highly active lightning
area then a standard 3 way gas tube protector must be added. Connect-
ing information on this device is provided by its manufacturer.
(2) Connecting the feed cable to the inside equipment.
Inside the building the feed cable is brought out to a terminal block con-
sisting of 4 pairs of screw down connections. The following diagram
shows how to wire the connectors. Frequently the pair used for power
may be paralleled with the 4th spare pair to allow less voltage loss in the
feed cable especially if the run is longer than 100 feet.