If This Is A First-Time Cable Modem Installation (That Is, You Are Not Replacing An "Old" Cable Modem), Do This - Zoom 5360 User Manual

If this is a first-time cable modem installation (that is, you are
NOT replacing an "old" cable modem), do this:
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Connect a "live" coaxial cable from your cable service provider to your cable
modem First check that the wire in the center of the cable's connector is
centered, straight, and clean. If the coaxial cable has a screw-on connector, turn
the connector clockwise when tightening the cable onto the Zoom cable modem..
(If you're not sure a cable is live, you can see whether you get a good TV signal
when that cable is used with a working TV set-top box.) Here are some ways
you can get the live cable:
You have a cable TV cable ("coaxial cable") with a male connector on the end
that isn't connected to anything. This cable may be coming out of a wall or
connected to a cable TV jack.
There's a cable TV jack in your wall. You can connect a cable TV "coaxial
cable" between that jack and your cable modem. You may have a coaxial
cable, possibly one that came with a cable modem starter kit from your cable
service provider. If you don't have a coaxial cable, you can get one at most
electronics stores. You want one with a screw-in male F connector at each
end, with a length that works for your installation.
If you don't have an available cable TV cable or wall
jack, use a coaxial "T adapter" or "splitter" available
from most electronics retailers (see example at right).
Make sure you get one designed for cable modems
and/or cable TV. These typically have one female
IN jack and two female OUT jacks. You can
disconnect a live cable from your TV set-top box and
screw it into the IN jack of the splitter. Then connect one coaxial cable from
an OUT jack to your TV set-top box and another coaxial cable from the other
OUT jack to your cable modem. You can see that this approach uses one
Coaxial Cable Cable TV Jack
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