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

   1 <refentry id="FE_ENABLE_HIGH_LNB_VOLTAGE">
   2   <refmeta>
   3     <refentrytitle>ioctl FE_ENABLE_HIGH_LNB_VOLTAGE</refentrytitle>
   4     &manvol;
   5   </refmeta>
   6
   7   <refnamediv>
   8     <refname>FE_ENABLE_HIGH_LNB_VOLTAGE</refname>
   9     <refpurpose>Select output DC level between normal LNBf voltages or higher
  10         LNBf voltages.</refpurpose>
  11   </refnamediv>
  12
  13   <refsynopsisdiv>
  14     <funcsynopsis>
  15       <funcprototype>
  16         <funcdef>int <function>ioctl</function></funcdef>
  17         <paramdef>int <parameter>fd</parameter></paramdef>
  18         <paramdef>int <parameter>request</parameter></paramdef>
  19         <paramdef>unsigned int <parameter>high</parameter></paramdef>
  20       </funcprototype>
  21     </funcsynopsis>
  22   </refsynopsisdiv>
  23
  24   <refsect1>
  25     <title>Arguments</title>
  26         <variablelist>
  27       <varlistentry>
  28         <term><parameter>fd</parameter></term>
  29         <listitem>
  30           <para>&fe_fd;</para>
  31         </listitem>
  32       </varlistentry>
  33       <varlistentry>
  34         <term><parameter>request</parameter></term>
  35         <listitem>
  36           <para>FE_ENABLE_HIGH_LNB_VOLTAGE</para>
  37         </listitem>
  38       </varlistentry>
  39       <varlistentry>
  40         <term><parameter>high</parameter></term>
  41         <listitem>
  42             <para>Valid flags:</para>
  43             <itemizedlist>
  44                 <listitem><para>0 - normal 13V and 18V.</para></listitem>
  45                 <listitem><para>&gt;0 - enables slightly higher voltages instead of
  46                     13/18V, in order to compensate for long antenna cables.</para></listitem>
  47             </itemizedlist>
  48         </listitem>
  49       </varlistentry>
  50     </variablelist>
  51   </refsect1>
  52
  53   <refsect1>
  54     <title>Description</title>
  55
  56     <para>Select output DC level between normal LNBf voltages or higher
  57         LNBf voltages between 0 (normal) or a value grater than 0 for higher
  58         voltages.</para>
  59 &return-value-dvb;
  60 </refsect1>
  61 </refentry>