Documentation/DocBook/media/dvb/fe-enable-high-lnb-voltage.xml


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<refentry id="FE_ENABLE_HIGH_LNB_VOLTAGE">
  <refmeta>
    <refentrytitle>ioctl FE_ENABLE_HIGH_LNB_VOLTAGE</refentrytitle>
    &manvol;
  </refmeta>

  <refnamediv>
    <refname>FE_ENABLE_HIGH_LNB_VOLTAGE</refname>
    <refpurpose>Select output DC level between normal LNBf voltages or higher
	LNBf voltages.</refpurpose>
  </refnamediv>

  <refsynopsisdiv>
    <funcsynopsis>
      <funcprototype>
	<funcdef>int <function>ioctl</function></funcdef>
	<paramdef>int <parameter>fd</parameter></paramdef>
	<paramdef>int <parameter>request</parameter></paramdef>
	<paramdef>unsigned int <parameter>high</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_ENABLE_HIGH_LNB_VOLTAGE</para>
	</listitem>
      </varlistentry>
      <varlistentry>
	<term><parameter>high</parameter></term>
	<listitem>
	    <para>Valid flags:</para>
	    <itemizedlist>
		<listitem><para>0 - normal 13V and 18V.</para></listitem>
		<listitem><para>&gt;0 - enables slightly higher voltages instead of
		    13/18V, in order to compensate for long antenna cables.</para></listitem>
	    </itemizedlist>
	</listitem>
      </varlistentry>
    </variablelist>
  </refsect1>

  <refsect1>
    <title>Description</title>

    <para>Select output DC level between normal LNBf voltages or higher
	LNBf voltages between 0 (normal) or a value grater than 0 for higher
	voltages.</para>
&return-value-dvb;
</refsect1>
</refentry>