1.. -*- coding: utf-8; mode: rst -*-
2
3.. _FE_ENABLE_HIGH_LNB_VOLTAGE:
4
5********************************
6ioctl FE_ENABLE_HIGH_LNB_VOLTAGE
7********************************
8
9Name
10====
11
12FE_ENABLE_HIGH_LNB_VOLTAGE - Select output DC level between normal LNBf voltages or higher LNBf - voltages.
13
14
15Synopsis
16========
17
18.. c:function:: int ioctl( int fd, FE_ENABLE_HIGH_LNB_VOLTAGE, unsigned int high )
19    :name: FE_ENABLE_HIGH_LNB_VOLTAGE
20
21
22Arguments
23=========
24
25``fd``
26    File descriptor returned by :ref:`open() <frontend_f_open>`.
27
28``high``
29    Valid flags:
30
31    -  0 - normal 13V and 18V.
32
33    -  >0 - enables slightly higher voltages instead of 13/18V, in order
34       to compensate for long antenna cables.
35
36
37Description
38===========
39
40Select output DC level between normal LNBf voltages or higher LNBf
41voltages between 0 (normal) or a value grater than 0 for higher
42voltages.
43
44
45Return Value
46============
47
48On success 0 is returned.
49
50On error -1 is returned, and the ``errno`` variable is set
51appropriately.
52
53Generic error codes are described at the
54:ref:`Generic Error Codes <gen-errors>` chapter.
55