Samsung LS23CFUKFV-ZA - Manual (Page 53)

Fine Tune
Due to weak signals or an incorrect antenna configuration, some of the channels may not be
tuned correctly.
(This function is only available in “Cable” mode.)
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Signal Strength
Unlike analog channels, which can vary in reception quality from "snowy" to clear, digital
(HDTV) channels have either perfect reception quality or you will not receive them at all. So,
unlike analog channels, you cannot fine tune a digital channel. You can, however, adjust your
antenna to improve the reception of available digital channels.
If the signal strength meter indicates that the signal is weak, physically adjust your antenna
to increase the signal strength. Continue to adjust the antenna until you find the best position
with the strongest signal.
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Setup
Available Modes
PC / DVI TV Component HDMI
Adjusting the LCD Display