media: frontend.rst: convert SEC note into footnote
The description of what SEC means fits well as a footnote. That makes the need of saying that SEC is only for Satellite when it was mentioned, as the footnote already says that. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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@ -25,7 +25,7 @@ The DVB frontend controls several sub-devices including:
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- Low noise amplifier (LNA)
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- Satellite Equipment Control (SEC) hardware (only for Satellite).
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- Satellite Equipment Control (SEC) [#f1]_.
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The frontend can be accessed through ``/dev/dvb/adapter?/frontend?``.
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Data types and ioctl definitions can be accessed by including
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@ -36,13 +36,16 @@ Data types and ioctl definitions can be accessed by including
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Transmission via the internet (DVB-IP) is not yet handled by this
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API but a future extension is possible.
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On Satellite systems, the API support for the Satellite Equipment
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Control (SEC) allows to power control and to send/receive signals to
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control the antenna subsystem, selecting the polarization and choosing
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the Intermediate Frequency IF) of the Low Noise Block Converter Feed
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Horn (LNBf). It supports the DiSEqC and V-SEC protocols. The DiSEqC
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(digital SEC) specification is available at
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`Eutelsat <http://www.eutelsat.com/satellites/4_5_5.html>`__.
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.. [#f1]
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On Satellite systems, the API support for the Satellite Equipment
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Control (SEC) allows to power control and to send/receive signals to
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control the antenna subsystem, selecting the polarization and choosing
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the Intermediate Frequency IF) of the Low Noise Block Converter Feed
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Horn (LNBf). It supports the DiSEqC and V-SEC protocols. The DiSEqC
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(digital SEC) specification is available at
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`Eutelsat <http://www.eutelsat.com/satellites/4_5_5.html>`__.
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.. toctree::
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