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1 | .. -*- coding: utf-8; mode: rst -*- |
2 | ||
3 | .. _frontend-property-cable-systems: | |
4 | ||
5 | ***************************************** | |
6 | Properties used on cable delivery systems | |
7 | ***************************************** | |
8 | ||
9 | ||
10 | .. _dvbc-params: | |
11 | ||
12 | DVB-C delivery system | |
13 | ===================== | |
14 | ||
15 | The DVB-C Annex-A is the widely used cable standard. Transmission uses | |
16 | QAM modulation. | |
17 | ||
18 | The DVB-C Annex-C is optimized for 6MHz, and is used in Japan. It | |
19 | supports a subset of the Annex A modulation types, and a roll-off of | |
20 | 0.13, instead of 0.15 | |
21 | ||
22 | The following parameters are valid for DVB-C Annex A/C: | |
23 | ||
24 | - :ref:`DTV_API_VERSION <DTV-API-VERSION>` | |
25 | ||
26 | - :ref:`DTV_DELIVERY_SYSTEM <DTV-DELIVERY-SYSTEM>` | |
27 | ||
28 | - :ref:`DTV_TUNE <DTV-TUNE>` | |
29 | ||
30 | - :ref:`DTV_CLEAR <DTV-CLEAR>` | |
31 | ||
32 | - :ref:`DTV_FREQUENCY <DTV-FREQUENCY>` | |
33 | ||
34 | - :ref:`DTV_MODULATION <DTV-MODULATION>` | |
35 | ||
36 | - :ref:`DTV_INVERSION <DTV-INVERSION>` | |
37 | ||
38 | - :ref:`DTV_SYMBOL_RATE <DTV-SYMBOL-RATE>` | |
39 | ||
40 | - :ref:`DTV_INNER_FEC <DTV-INNER-FEC>` | |
41 | ||
42 | - :ref:`DTV_LNA <DTV-LNA>` | |
43 | ||
44 | In addition, the :ref:`DTV QoS statistics <frontend-stat-properties>` | |
45 | are also valid. | |
46 | ||
47 | ||
48 | .. _dvbc-annex-b-params: | |
49 | ||
50 | DVB-C Annex B delivery system | |
51 | ============================= | |
52 | ||
53 | The DVB-C Annex-B is only used on a few Countries like the United | |
54 | States. | |
55 | ||
56 | The following parameters are valid for DVB-C Annex B: | |
57 | ||
58 | - :ref:`DTV_API_VERSION <DTV-API-VERSION>` | |
59 | ||
60 | - :ref:`DTV_DELIVERY_SYSTEM <DTV-DELIVERY-SYSTEM>` | |
61 | ||
62 | - :ref:`DTV_TUNE <DTV-TUNE>` | |
63 | ||
64 | - :ref:`DTV_CLEAR <DTV-CLEAR>` | |
65 | ||
66 | - :ref:`DTV_FREQUENCY <DTV-FREQUENCY>` | |
67 | ||
68 | - :ref:`DTV_MODULATION <DTV-MODULATION>` | |
69 | ||
70 | - :ref:`DTV_INVERSION <DTV-INVERSION>` | |
71 | ||
72 | - :ref:`DTV_LNA <DTV-LNA>` | |
73 | ||
74 | In addition, the :ref:`DTV QoS statistics <frontend-stat-properties>` | |
75 | are also valid. |