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75 lines
1.7 KiB
75 lines
1.7 KiB
.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later |
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.. _frontend-property-cable-systems: |
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***************************************** |
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Properties used on cable delivery systems |
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***************************************** |
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.. _dvbc-params: |
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DVB-C delivery system |
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===================== |
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The DVB-C Annex-A is the widely used cable standard. Transmission uses |
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QAM modulation. |
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The DVB-C Annex-C is optimized for 6MHz, and is used in Japan. It |
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supports a subset of the Annex A modulation types, and a roll-off of |
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0.13, instead of 0.15 |
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The following parameters are valid for DVB-C Annex A/C: |
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- :ref:`DTV_API_VERSION <DTV-API-VERSION>` |
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- :ref:`DTV_DELIVERY_SYSTEM <DTV-DELIVERY-SYSTEM>` |
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- :ref:`DTV_TUNE <DTV-TUNE>` |
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- :ref:`DTV_CLEAR <DTV-CLEAR>` |
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- :ref:`DTV_FREQUENCY <DTV-FREQUENCY>` |
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- :ref:`DTV_MODULATION <DTV-MODULATION>` |
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- :ref:`DTV_INVERSION <DTV-INVERSION>` |
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- :ref:`DTV_SYMBOL_RATE <DTV-SYMBOL-RATE>` |
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- :ref:`DTV_INNER_FEC <DTV-INNER-FEC>` |
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- :ref:`DTV_LNA <DTV-LNA>` |
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In addition, the :ref:`DTV QoS statistics <frontend-stat-properties>` |
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are also valid. |
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.. _dvbc-annex-b-params: |
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DVB-C Annex B delivery system |
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============================= |
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The DVB-C Annex-B is only used on a few Countries like the United |
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States. |
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The following parameters are valid for DVB-C Annex B: |
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- :ref:`DTV_API_VERSION <DTV-API-VERSION>` |
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- :ref:`DTV_DELIVERY_SYSTEM <DTV-DELIVERY-SYSTEM>` |
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- :ref:`DTV_TUNE <DTV-TUNE>` |
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- :ref:`DTV_CLEAR <DTV-CLEAR>` |
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- :ref:`DTV_FREQUENCY <DTV-FREQUENCY>` |
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- :ref:`DTV_MODULATION <DTV-MODULATION>` |
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- :ref:`DTV_INVERSION <DTV-INVERSION>` |
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- :ref:`DTV_LNA <DTV-LNA>` |
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In addition, the :ref:`DTV QoS statistics <frontend-stat-properties>` |
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are also valid.
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