1. Description of w_scan generated/imported initial tuning data files
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1.0 Syntax
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Every line beginning with '#' is a comment line.
Some of them might be parsed in future versions of w_scan.
<> mandatory argument (short syntax)
[] optional argument (long syntax)
NOTE: IF ANY OPTIONAL ARGUMENT IS GIVEN, THIS LINE USES *ALL* OPTIONAL ARGUMENTS.
Delimiters to be used are SPACE or TAB, w_scan uses only SPACE if generating files.
One header line may begin with '#!' marking extended information
from w_scan surrounded by tags as follows:
#! <w_scan> <version> <tuning_timeout> <filter_timeout> <fe_type> <list_index> </w_scan>
* version
w_scan version used for scan, YYYYMMDD
* tuning_timeout
1 = fastest [default]
2 = medium
3 = slowest
* filter_timeout
0 = use standard filter time_out
1 = use long filter time_out
* fe_type
identifies what list_index refers to. One of the
following:
- ATSC (VSB, QAM Annex B)
- QAM (DVB-C = QAM Annex AC)
- OFDM (DVB-T)
- QPSK (DVB-S)
* list_index
depending on the fe_type:
* country selected during scan
* satellite selected during scan
may be used as fallback to
standard scan mode (no dvbscan data) if no
transponders found
NOTE: Please don't touch the lines generated by w_scan,
future versions may not be able to parse them.
First letter: one of the following
* T
* C
* A
* S
NOTE: only one type of frontend should be used per file, see above.
1.1 DVB-T
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# T[2] <freq> <bw> <fec_hi> <fec_lo> <mod> <tm> <guard> <hi> [# comment]
T identifier DVB-T, frontend type FE_OFDM
2 use second generation modulation, "DVB-T2"
freq center frequency in Hz
bw bandwidth of channel, one of the following identifiers
* 8MHz 8MHz
* 7MHz 7MHz
* 6MHz 6MHz
* 5MHz 5MHz, currently not supported by Linux DVB API
* AUTO let hardware choose. might fail if hardware doesnt support.
fec_hi forward error correction scheme for high priority stream.
* NONE no forward error correction
* 1/2
* 2/3
* 3/4
* 4/5
* 5/6
* 6/7
* 7/8
* AUTO let hardware choose. might fail if hardware doesnt support.
fec_lo forward error correction scheme for low priority stream, only used if
hierarchy is set.
* NONE no forward error correction (default)
* 1/2
* 2/3
* 3/4
* 4/5
* 5/6
* 6/7
* 7/8
* AUTO let hardware choose. might fail if hardware doesnt support.
mod modulation scheme
* QPSK quadrature phase-shift keying (so far never seen ..)
* QAM16 16x quadrature amplitude modulation
* QAM64 64x quadrature amplitude modulation
* AUTO let hardware choose. might fail if hardware doesnt support.
tm transmission mode
* 2k transmission mode 2k (1705 subcarriers)
* 8k transmission mode 8k (6817 subcarriers)
* 4k transmission mode 4k (3410 subcarriers), currently
not supported by Linux DVB API
* AUTO let hardware choose. might fail if hardware doesnt support.
guard guard interval, fractions of a symbol period
* 1/32 guard interval 1/32
* 1/16 guard interval 1/16
* 1/8 guard interval 1/8
* 1/4 guard interval 1/4
* AUTO let hardware choose. might fail if hardware doesnt support.
hi hierarchy, states wether hierarchy scheme is used and alpha values
* NONE no hierarchy used and fec_lo ignored.
* 1 use hierarchy with alpha = 1
* 2 use hierarchy with alpha = 2
* 4 use hierarchy with alpha = 4
* AUTO let hardware choose. might fail if hardware doesnt support.
1.2 DVB-C
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# C[2] <freq> <sr> <fec> <mod> [# comment]
C identifier DVB-C, frontend_type FE_QAM
2 use second generation modulation, "DVB-C2"
freq center frequency in Hz
sr symbolrate
fec inner forward error correction scheme
* NONE no forward error correction (default)
* 1/2
* 2/3
* 3/4
* 4/5
* 5/6
* 6/7
* 7/8
* 3/5
* 9/10
* AUTO let hardware choose. might fail if hardware doesnt support.
mod modulation scheme
QAM16 16x quadrature amplitude modulation (never seen..)
QAM32 32x quadrature amplitude modulation (never seen..)
QAM64 64x quadrature amplitude modulation (standard)
QAM128 128x quadrature amplitude modulation (seldom)
QAM256 256x quadrature amplitude modulation (often)
QAM512 512x quadrature amplitude modulation, currently not supported by Linux DVB API
QAM1024 1024x quadrature amplitude modulation, currently not supported by Linux DVB API
QAM2048 2048x quadrature amplitude modulation, currently not supported by Linux DVB API
QAM4096 4096x quadrature amplitude modulation, currently not supported by Linux DVB API
1.3 ATSC
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# A[2] <freq> <mod> [# comment]
A identifier ATSC, frontend_type FE_ATSC
2 ignored.
freq center frequency in Hz
mod modulation scheme
QAM64 cable tv, 64x quadrature amplitude modulation (never seen..)
QAM256 cable tv, 256x quadrature amplitude modulation (standard)
8VSB aerial tv, 8-level vestigial sideband modulation (standard)
16VSB aerial tv, 16-level vestigial sideband modulation (never seen..)
1.4 DVB-S
-----------------------------------------
=================================================
| NOTE: DVB-S[2] IS NOT IMPLEMENTED IN w_scan. |
=================================================
# S[2] <freq> <pol> <sr> <fec> [ro] [mod] [# comment]
S identifier DVB-S, frontend_type FE_QPSK
2 use second generation modulation, "DVB-S2"
freq intermediate frequency in Hz
pol polarization
H horizontal
V vertical
R circular right
L circular left
sr symbolrate
fec forward error correction scheme
* NONE no forward error correction (default)
* 1/2 {DVB-S, DVB-S2}
* 2/3 {DVB-S, DVB-S2}
* 3/4 {DVB-S, DVB-S2}
* 4/5 {DVB-S, DVB-S2}
* 5/6 {DVB-S, DVB-S2}
* 6/7 {DVB-S, DVB-S2}
* 7/8 {DVB-S, DVB-S2}
* 3/5 {DVB-S2}
* 9/10 {DVB-S2}
* AUTO let hardware choose. may fail if no hardware support.
ro roll-off factor used in DVB-S2, 0,35 is assumed for DVB-S
* 35 alpha = 0,35 {DVB-S, DVB-S2}
* 25 alpha = 0,25 {DVB-S2}
* 20 alpha = 0,20 {DVB-S2}
* AUTO alpha = 0,35 {DVB-S, DVB-S2}
NOTE: AUTO defaults to 0,35.
mod modulation scheme
* QPSK quadrature phase-shift keying (standard), {DVB-S, DVB-S2}
* 8PSK 8x phase-shift keying, {DVB-S2}
* 16APSK 16x amplitude- and phase-shift keying, {DVB-S2}
* 32APSK 32x amplitude- and phase-shift keying, {DVB-S2}
* AUTO use QPSK
NOTE: AUTO defaults to QPSK.
2. Description of w_scan rotor position data files
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Every line beginning with '#' is a comment line.
Delimiters to be used are SPACE or TAB.
file format:
---------------
R <position> <sat_id> [# comment]
Identifier "R"
---------------
"R" is mandatory.
position
---------------
position may be any number from 1 .. 255, positions < 1 are ignored.
position has to correspond to the rotor(positioner) position programmed
by DiSEqC for the satellite mentioned.
sat_id
---------------
sat_id has to be *exactly* one of the identifiers returned
by 'w_scan -s?'
example:
to specify rotor position 11 for Astra 1F/1G/1H/1KR/1L (19.2 east):
R 11 S19E2
3. Description of w_scan generated VDR channels.conf files
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see
- http://www.vdr-wiki.de/wiki/index.php/Channels.conf
- http://www.vdr-wiki.de/wiki/index.php/Vdr(5)
distrib
>
Fedora
>
14
>
x86_64
>
media
>
updates
>
by-pkgid
>
90431a5f845c6e8ac2223636823ceb8c
>
files
>
7
