Lines Matching +full:signal +full:- +full:to +full:- +full:noise
1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _frontend-stat-properties:
18 standards, up to 3 groups of statistics can be provided, and
19 ``dtv_property.stat.len`` is updated to reflect the "global" metrics,
22 So, in order to be consistent with other delivery systems, the first
24 to the global metric. The other elements of the array represent each
32 - ``svalue`` or ``uvalue``, where ``svalue`` is for signed values of
36 - ``scale`` - Scale for the value. It can be:
38 - ``FE_SCALE_NOT_AVAILABLE`` - The parameter is supported by the
39 frontend, but it was not possible to collect it (could be a
42 - ``FE_SCALE_DECIBEL`` - parameter is a signed value, measured in
45 - ``FE_SCALE_RELATIVE`` - parameter is a unsigned value, where 0
48 - ``FE_SCALE_COUNTER`` - parameter is a unsigned value that counts
53 .. _DTV-STAT-SIGNAL-STRENGTH:
58 Indicates the signal strength level at the analog part of the tuner or
63 - ``FE_SCALE_NOT_AVAILABLE`` - it failed to measure it, or the
66 - ``FE_SCALE_DECIBEL`` - signal strength is in 0.001 dBm units, power
69 - ``FE_SCALE_RELATIVE`` - The frontend provides a 0% to 100%
70 measurement for power (actually, 0 to 65535).
73 .. _DTV-STAT-CNR:
78 Indicates the Signal to Noise ratio for the main carrier.
82 - ``FE_SCALE_NOT_AVAILABLE`` - it failed to measure it, or the
85 - ``FE_SCALE_DECIBEL`` - Signal/Noise ratio is in 0.001 dB units.
87 - ``FE_SCALE_RELATIVE`` - The frontend provides a 0% to 100%
88 measurement for Signal/Noise (actually, 0 to 65535).
91 .. _DTV-STAT-PRE-ERROR-BIT-COUNT:
103 In order to get the BER (Bit Error Rate) measurement, it should be
105 :ref:`DTV_STAT_PRE_TOTAL_BIT_COUNT <DTV-STAT-PRE-TOTAL-BIT-COUNT>`.
113 - ``FE_SCALE_NOT_AVAILABLE`` - it failed to measure it, or the
116 - ``FE_SCALE_COUNTER`` - Number of error bits counted before the inner
120 .. _DTV-STAT-PRE-TOTAL-BIT-COUNT:
127 :ref:`DTV_STAT_PRE_ERROR_BIT_COUNT <DTV-STAT-PRE-ERROR-BIT-COUNT>`
131 amount of bits on the transport stream, as the frontend may need to
141 - ``FE_SCALE_NOT_AVAILABLE`` - it failed to measure it, or the
144 - ``FE_SCALE_COUNTER`` - Number of bits counted while measuring
145 :ref:`DTV_STAT_PRE_ERROR_BIT_COUNT <DTV-STAT-PRE-ERROR-BIT-COUNT>`.
148 .. _DTV-STAT-POST-ERROR-BIT-COUNT:
160 In order to get the BER (Bit Error Rate) measurement, it should be
162 :ref:`DTV_STAT_POST_TOTAL_BIT_COUNT <DTV-STAT-POST-TOTAL-BIT-COUNT>`.
170 - ``FE_SCALE_NOT_AVAILABLE`` - it failed to measure it, or the
173 - ``FE_SCALE_COUNTER`` - Number of error bits counted after the inner
177 .. _DTV-STAT-POST-TOTAL-BIT-COUNT:
184 :ref:`DTV_STAT_POST_ERROR_BIT_COUNT <DTV-STAT-POST-ERROR-BIT-COUNT>`
188 amount of bits on the transport stream, as the frontend may need to
198 - ``FE_SCALE_NOT_AVAILABLE`` - it failed to measure it, or the
201 - ``FE_SCALE_COUNTER`` - Number of bits counted while measuring
202 :ref:`DTV_STAT_POST_ERROR_BIT_COUNT <DTV-STAT-POST-ERROR-BIT-COUNT>`.
205 .. _DTV-STAT-ERROR-BLOCK-COUNT:
211 correction coding (after Reed-Solomon or other outer code).
219 - ``FE_SCALE_NOT_AVAILABLE`` - it failed to measure it, or the
222 - ``FE_SCALE_COUNTER`` - Number of error blocks counted after the outer
226 .. _DTV-STAT-TOTAL-BLOCK-COUNT:
228 DTV-STAT_TOTAL_BLOCK_COUNT
232 :ref:`DTV_STAT_ERROR_BLOCK_COUNT <DTV-STAT-ERROR-BLOCK-COUNT>`
235 It can be used to calculate the PER indicator, by dividing
236 :ref:`DTV_STAT_ERROR_BLOCK_COUNT <DTV-STAT-ERROR-BLOCK-COUNT>` by
237 :ref:`DTV-STAT-TOTAL-BLOCK-COUNT`.
241 - ``FE_SCALE_NOT_AVAILABLE`` - it failed to measure it, or the
244 - ``FE_SCALE_COUNTER`` - Number of blocks counted while measuring
245 :ref:`DTV_STAT_ERROR_BLOCK_COUNT <DTV-STAT-ERROR-BLOCK-COUNT>`.