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>
This commit is contained in:
Mauro Carvalho Chehab 2017-08-26 06:07:11 -04:00
parent 3430b8e9aa
commit 2258ee775f
1 changed files with 11 additions and 8 deletions

View File

@ -25,7 +25,7 @@ The DVB frontend controls several sub-devices including:
- Low noise amplifier (LNA)
- Satellite Equipment Control (SEC) hardware (only for Satellite).
- Satellite Equipment Control (SEC) [#f1]_.
The frontend can be accessed through ``/dev/dvb/adapter?/frontend?``.
Data types and ioctl definitions can be accessed by including
@ -36,13 +36,16 @@ Data types and ioctl definitions can be accessed by including
Transmission via the internet (DVB-IP) is not yet handled by this
API but a future extension is possible.
On Satellite systems, the API support for the Satellite Equipment
Control (SEC) allows to power control and to send/receive signals to
control the antenna subsystem, selecting the polarization and choosing
the Intermediate Frequency IF) of the Low Noise Block Converter Feed
Horn (LNBf). It supports the DiSEqC and V-SEC protocols. The DiSEqC
(digital SEC) specification is available at
`Eutelsat <http://www.eutelsat.com/satellites/4_5_5.html>`__.
.. [#f1]
On Satellite systems, the API support for the Satellite Equipment
Control (SEC) allows to power control and to send/receive signals to
control the antenna subsystem, selecting the polarization and choosing
the Intermediate Frequency IF) of the Low Noise Block Converter Feed
Horn (LNBf). It supports the DiSEqC and V-SEC protocols. The DiSEqC
(digital SEC) specification is available at
`Eutelsat <http://www.eutelsat.com/satellites/4_5_5.html>`__.
.. toctree::