User's Manual

To modem
(no DC)
To AR3155
(with DC)
To AC power
DC power being inserted
to to
modem antenna
Figure 2-5: Power Inserter and AC/DC converter.
2.4 Wireless Cable Modem
Place the wireless cable modem where it will be used and attach the short cable on the power
inserter (labeled “To Modem” in Figure 2-5) to the F connector on the rear of the modem. Connect
the (separate) modem wall-mounted power supply (included with the wireless cable modem) to the
power connector on the rear of the modem. Plug both wall mounted power supplies into suitable
AC power sources – preferably a UPS or surge protected power strip. Connect a straight-through
10/100BaseT LAN cable between the RJ-45 jack on the modem and the user hub, router or
personal computer.
Figure 2-6 illustrates the modem connections at the back of a typical modem. The DB-9 connector
is a maintenance port for the modem shown.
June 2003 Page 2-8