blob: 40d7320f82f75944d824a6d5435cefe7d9bcde37 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: DTV.fe
.. _FE_ENABLE_HIGH_LNB_VOLTAGE:
********************************
ioctl FE_ENABLE_HIGH_LNB_VOLTAGE
********************************
Name
====
FE_ENABLE_HIGH_LNB_VOLTAGE - Select output DC level between normal LNBf voltages or higher LNBf - voltages.
Synopsis
========
.. c:macro:: FE_ENABLE_HIGH_LNB_VOLTAGE
``int ioctl(int fd, FE_ENABLE_HIGH_LNB_VOLTAGE, unsigned int high)``
Arguments
=========
``fd``
File descriptor returned by :c:func:`open()`.
``high``
Valid flags:
- 0 - normal 13V and 18V.
- >0 - enables slightly higher voltages instead of 13/18V, in order
to compensate for long antenna cables.
Description
===========
Select output DC level between normal LNBf voltages or higher LNBf
voltages between 0 (normal) or a value grater than 0 for higher
voltages.
Return Value
============
On success 0 is returned.
On error -1 is returned, and the ``errno`` variable is set
appropriately.
Generic error codes are described at the
:ref:`Generic Error Codes <gen-errors>` chapter.
|
