1*059b1c5bSMauro Carvalho Chehab.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 254f38fcaSMauro Carvalho Chehab 354f38fcaSMauro Carvalho Chehab.. _frontend-property-cable-systems: 454f38fcaSMauro Carvalho Chehab 554f38fcaSMauro Carvalho Chehab***************************************** 654f38fcaSMauro Carvalho ChehabProperties used on cable delivery systems 754f38fcaSMauro Carvalho Chehab***************************************** 854f38fcaSMauro Carvalho Chehab 954f38fcaSMauro Carvalho Chehab 1054f38fcaSMauro Carvalho Chehab.. _dvbc-params: 1154f38fcaSMauro Carvalho Chehab 1254f38fcaSMauro Carvalho ChehabDVB-C delivery system 1354f38fcaSMauro Carvalho Chehab===================== 1454f38fcaSMauro Carvalho Chehab 1554f38fcaSMauro Carvalho ChehabThe DVB-C Annex-A is the widely used cable standard. Transmission uses 1654f38fcaSMauro Carvalho ChehabQAM modulation. 1754f38fcaSMauro Carvalho Chehab 1854f38fcaSMauro Carvalho ChehabThe DVB-C Annex-C is optimized for 6MHz, and is used in Japan. It 1954f38fcaSMauro Carvalho Chehabsupports a subset of the Annex A modulation types, and a roll-off of 2054f38fcaSMauro Carvalho Chehab0.13, instead of 0.15 2154f38fcaSMauro Carvalho Chehab 2254f38fcaSMauro Carvalho ChehabThe following parameters are valid for DVB-C Annex A/C: 2354f38fcaSMauro Carvalho Chehab 2454f38fcaSMauro Carvalho Chehab- :ref:`DTV_API_VERSION <DTV-API-VERSION>` 2554f38fcaSMauro Carvalho Chehab 2654f38fcaSMauro Carvalho Chehab- :ref:`DTV_DELIVERY_SYSTEM <DTV-DELIVERY-SYSTEM>` 2754f38fcaSMauro Carvalho Chehab 2854f38fcaSMauro Carvalho Chehab- :ref:`DTV_TUNE <DTV-TUNE>` 2954f38fcaSMauro Carvalho Chehab 3054f38fcaSMauro Carvalho Chehab- :ref:`DTV_CLEAR <DTV-CLEAR>` 3154f38fcaSMauro Carvalho Chehab 3254f38fcaSMauro Carvalho Chehab- :ref:`DTV_FREQUENCY <DTV-FREQUENCY>` 3354f38fcaSMauro Carvalho Chehab 3454f38fcaSMauro Carvalho Chehab- :ref:`DTV_MODULATION <DTV-MODULATION>` 3554f38fcaSMauro Carvalho Chehab 3654f38fcaSMauro Carvalho Chehab- :ref:`DTV_INVERSION <DTV-INVERSION>` 3754f38fcaSMauro Carvalho Chehab 3854f38fcaSMauro Carvalho Chehab- :ref:`DTV_SYMBOL_RATE <DTV-SYMBOL-RATE>` 3954f38fcaSMauro Carvalho Chehab 4054f38fcaSMauro Carvalho Chehab- :ref:`DTV_INNER_FEC <DTV-INNER-FEC>` 4154f38fcaSMauro Carvalho Chehab 4254f38fcaSMauro Carvalho Chehab- :ref:`DTV_LNA <DTV-LNA>` 4354f38fcaSMauro Carvalho Chehab 4454f38fcaSMauro Carvalho ChehabIn addition, the :ref:`DTV QoS statistics <frontend-stat-properties>` 4554f38fcaSMauro Carvalho Chehabare also valid. 4654f38fcaSMauro Carvalho Chehab 4754f38fcaSMauro Carvalho Chehab 4854f38fcaSMauro Carvalho Chehab.. _dvbc-annex-b-params: 4954f38fcaSMauro Carvalho Chehab 5054f38fcaSMauro Carvalho ChehabDVB-C Annex B delivery system 5154f38fcaSMauro Carvalho Chehab============================= 5254f38fcaSMauro Carvalho Chehab 5354f38fcaSMauro Carvalho ChehabThe DVB-C Annex-B is only used on a few Countries like the United 5454f38fcaSMauro Carvalho ChehabStates. 5554f38fcaSMauro Carvalho Chehab 5654f38fcaSMauro Carvalho ChehabThe following parameters are valid for DVB-C Annex B: 5754f38fcaSMauro Carvalho Chehab 5854f38fcaSMauro Carvalho Chehab- :ref:`DTV_API_VERSION <DTV-API-VERSION>` 5954f38fcaSMauro Carvalho Chehab 6054f38fcaSMauro Carvalho Chehab- :ref:`DTV_DELIVERY_SYSTEM <DTV-DELIVERY-SYSTEM>` 6154f38fcaSMauro Carvalho Chehab 6254f38fcaSMauro Carvalho Chehab- :ref:`DTV_TUNE <DTV-TUNE>` 6354f38fcaSMauro Carvalho Chehab 6454f38fcaSMauro Carvalho Chehab- :ref:`DTV_CLEAR <DTV-CLEAR>` 6554f38fcaSMauro Carvalho Chehab 6654f38fcaSMauro Carvalho Chehab- :ref:`DTV_FREQUENCY <DTV-FREQUENCY>` 6754f38fcaSMauro Carvalho Chehab 6854f38fcaSMauro Carvalho Chehab- :ref:`DTV_MODULATION <DTV-MODULATION>` 6954f38fcaSMauro Carvalho Chehab 7054f38fcaSMauro Carvalho Chehab- :ref:`DTV_INVERSION <DTV-INVERSION>` 7154f38fcaSMauro Carvalho Chehab 7254f38fcaSMauro Carvalho Chehab- :ref:`DTV_LNA <DTV-LNA>` 7354f38fcaSMauro Carvalho Chehab 7454f38fcaSMauro Carvalho ChehabIn addition, the :ref:`DTV QoS statistics <frontend-stat-properties>` 7554f38fcaSMauro Carvalho Chehabare also valid. 76