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Diffstat (limited to 'Documentation/DocBook/media/dvb/fe-set-voltage.xml')
-rw-r--r-- | Documentation/DocBook/media/dvb/fe-set-voltage.xml | 69 |
1 files changed, 0 insertions, 69 deletions
diff --git a/Documentation/DocBook/media/dvb/fe-set-voltage.xml b/Documentation/DocBook/media/dvb/fe-set-voltage.xml deleted file mode 100644 index c89a6f79b5af..000000000000 --- a/Documentation/DocBook/media/dvb/fe-set-voltage.xml +++ /dev/null @@ -1,69 +0,0 @@ -<refentry id="FE_SET_VOLTAGE"> - <refmeta> - <refentrytitle>ioctl FE_SET_VOLTAGE</refentrytitle> - &manvol; - </refmeta> - - <refnamediv> - <refname>FE_SET_VOLTAGE</refname> - <refpurpose>Allow setting the DC level sent to the antenna subsystem.</refpurpose> - </refnamediv> - - <refsynopsisdiv> - <funcsynopsis> - <funcprototype> - <funcdef>int <function>ioctl</function></funcdef> - <paramdef>int <parameter>fd</parameter></paramdef> - <paramdef>int <parameter>request</parameter></paramdef> - <paramdef>enum fe_sec_voltage *<parameter>voltage</parameter></paramdef> - </funcprototype> - </funcsynopsis> - </refsynopsisdiv> - - <refsect1> - <title>Arguments</title> - <variablelist> - <varlistentry> - <term><parameter>fd</parameter></term> - <listitem> - <para>&fe_fd;</para> - </listitem> - </varlistentry> - <varlistentry> - <term><parameter>request</parameter></term> - <listitem> - <para>FE_SET_VOLTAGE</para> - </listitem> - </varlistentry> - <varlistentry> - <term><parameter>voltage</parameter></term> - <listitem> - <para>pointer to &fe-sec-voltage;</para> - <para>Valid values are described at &fe-sec-voltage;.</para> - </listitem> - </varlistentry> - </variablelist> - </refsect1> - - <refsect1> - <title>Description</title> - -<para>This ioctl allows to set the DC voltage level sent through the antenna - cable to 13V, 18V or off.</para> -<para>Usually, a satellite antenna subsystems require that the digital TV - device to send a DC voltage to feed power to the LNBf. Depending on the - LNBf type, the polarization or the intermediate frequency (IF) of the LNBf - can controlled by the voltage level. Other devices (for example, the ones - that implement DISEqC and multipoint LNBf's don't need to control the - voltage level, provided that either 13V or 18V is sent to power up the - LNBf.</para> -<para>NOTE: if more than one device is connected to the same antenna, - setting a voltage level may interfere on other devices, as they may lose - the capability of setting polarization or IF. So, on those - cases, setting the voltage to SEC_VOLTAGE_OFF while the device is not is - used is recommended.</para> - -&return-value-dvb; -</refsect1> - -</refentry> |