Hitachi 55R7 Owner's Manual page 35

6. Wait while your TV scans for broadcast (antenna TV) stations...
... and then cable TV channels.
Tip: Cable TV channels are channels from a cable TV provider that you can receive by connecting their cable
directly to your TV (unscrambled NTSC, ATSC, and QAM channels, if you're the kind of person who is inter-
ested in the details). In many cases, your cable provider probably requires you to use their set-top box and
connect it to a different input, and then use the set-top box to tune your cable stations. In that case, you can
skip scanning for cable channels.
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