Documentation/DocBook/media/dvb/dvbproperty.xml

   1 <section id="FE_GET_SET_PROPERTY">
   2 <title><constant>FE_GET_PROPERTY/FE_SET_PROPERTY</constant></title>
   3 <para>This section describes the DVB version 5 extention of the DVB-API, also
   4 called "S2API", as this API were added to provide support for DVB-S2. It was
   5 designed to be able to replace the old frontend API. Yet, the DISEQC and
   6 the capability ioctls weren't implemented yet via the new way.</para>
   7 <para>The typical usage for the <constant>FE_GET_PROPERTY/FE_SET_PROPERTY</constant>
   8 API is to replace the ioctl's were the <link linkend="dvb-frontend-parameters">
   9 struct <constant>dvb_frontend_parameters</constant></link> were used.</para>
  10 <section id="dtv-property">
  11 <title>DTV property type</title>
  12 <programlisting>
  13 /* Reserved fields should be set to 0 */
  14 struct dtv_property {
  15         __u32 cmd;
  16         union {
  17                 __u32 data;
  18                 struct {
  19                         __u8 data[32];
  20                         __u32 len;
  21                         __u32 reserved1[3];
  22                         void *reserved2;
  23                 } buffer;
  24         } u;
  25         int result;
  26 } __attribute__ ((packed));
  27
  28 /* num of properties cannot exceed DTV_IOCTL_MAX_MSGS per ioctl */
  29 #define DTV_IOCTL_MAX_MSGS 64
  30 </programlisting>
  31 </section>
  32 <section id="dtv-properties">
  33 <title>DTV properties type</title>
  34 <programlisting>
  35 struct dtv_properties {
  36         __u32 num;
  37         struct dtv_property *props;
  38 };
  39 </programlisting>
  40 </section>
  41
  42 <section id="FE_GET_PROPERTY">
  43 <title>FE_GET_PROPERTY</title>
  44 <para>DESCRIPTION
  45 </para>
  46 <informaltable><tgroup cols="1"><tbody><row><entry
  47  align="char">
  48 <para>This ioctl call returns one or more frontend properties. This call only
  49  requires read-only access to the device.</para>
  50 </entry>
  51  </row></tbody></tgroup></informaltable>
  52 <para>SYNOPSIS
  53 </para>
  54 <informaltable><tgroup cols="1"><tbody><row><entry
  55  align="char">
  56 <para>int ioctl(int fd, int request = <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY</link>,
  57  dtv_properties &#x22C6;props);</para>
  58 </entry>
  59  </row></tbody></tgroup></informaltable>
  60 <para>PARAMETERS
  61 </para>
  62 <informaltable><tgroup cols="2"><tbody><row><entry align="char">
  63 <para>int fd</para>
  64 </entry><entry
  65  align="char">
  66 <para>File descriptor returned by a previous call to open().</para>
  67 </entry>
  68  </row><row><entry
  69  align="char">
  70 <para>int num</para>
  71 </entry><entry
  72  align="char">
  73 <para>Equals <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY</link> for this command.</para>
  74 </entry>
  75  </row><row><entry
  76  align="char">
  77 <para>struct dtv_property *props</para>
  78 </entry><entry
  79  align="char">
  80 <para>Points to the location where the front-end property commands are stored.</para>
  81 </entry>
  82  </row></tbody></tgroup></informaltable>
  83 &return-value-dvb;
  84 <informaltable><tgroup cols="2"><tbody><row>
  85   <entry align="char"><para>EOPNOTSUPP</para></entry>
  86   <entry align="char"><para>Property type not supported.</para></entry>
  87  </row></tbody></tgroup></informaltable>
  88 </section>
  89
  90 <section id="FE_SET_PROPERTY">
  91 <title>FE_SET_PROPERTY</title>
  92 <para>DESCRIPTION
  93 </para>
  94 <informaltable><tgroup cols="1"><tbody><row><entry
  95  align="char">
  96 <para>This ioctl call sets one or more frontend properties. This call only
  97  requires read-only access to the device.</para>
  98 </entry>
  99  </row></tbody></tgroup></informaltable>
 100 <para>SYNOPSIS
 101 </para>
 102 <informaltable><tgroup cols="1"><tbody><row><entry
 103  align="char">
 104 <para>int ioctl(int fd, int request = <link linkend="FE_SET_PROPERTY">FE_SET_PROPERTY</link>,
 105  dtv_properties &#x22C6;props);</para>
 106 </entry>
 107  </row></tbody></tgroup></informaltable>
 108 <para>PARAMETERS
 109 </para>
 110 <informaltable><tgroup cols="2"><tbody><row><entry align="char">
 111 <para>int fd</para>
 112 </entry><entry
 113  align="char">
 114 <para>File descriptor returned by a previous call to open().</para>
 115 </entry>
 116  </row><row><entry
 117  align="char">
 118 <para>int num</para>
 119 </entry><entry
 120  align="char">
 121 <para>Equals <link linkend="FE_SET_PROPERTY">FE_SET_PROPERTY</link> for this command.</para>
 122 </entry>
 123  </row><row><entry
 124  align="char">
 125 <para>struct dtv_property *props</para>
 126 </entry><entry
 127  align="char">
 128 <para>Points to the location where the front-end property commands are stored.</para>
 129 </entry>
 130  </row></tbody></tgroup></informaltable>
 131 &return-value-dvb;
 132 <informaltable><tgroup cols="2"><tbody><row>
 133   <entry align="char"><para>EOPNOTSUPP</para></entry>
 134   <entry align="char"><para>Property type not supported.</para></entry>
 135  </row></tbody></tgroup></informaltable>
 136 </section>
 137
 138 <section>
 139         <title>Property types</title>
 140 <para>
 141 On <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY</link>/<link linkend="FE_SET_PROPERTY">FE_SET_PROPERTY</link>,
 142 the actual action is determined by the dtv_property cmd/data pairs. With one single ioctl, is possible to
 143 get/set up to 64 properties. The actual meaning of each property is described on the next sections.
 144 </para>
 145
 146 <para>The available frontend property types are shown on the next section.</para>
 147 </section>
 148
 149 <section id="fe_property_parameters">
 150         <title>Digital TV property parameters</title>
 151         <section id="DTV-UNDEFINED">
 152         <title><constant>DTV_UNDEFINED</constant></title>
 153         <para>Used internally. A GET/SET operation for it won't change or return anything.</para>
 154         </section>
 155         <section id="DTV-TUNE">
 156         <title><constant>DTV_TUNE</constant></title>
 157         <para>Interpret the cache of data, build either a traditional frontend tunerequest so we can pass validation in the <constant>FE_SET_FRONTEND</constant> ioctl.</para>
 158         </section>
 159         <section id="DTV-CLEAR">
 160         <title><constant>DTV_CLEAR</constant></title>
 161         <para>Reset a cache of data specific to the frontend here. This does not effect hardware.</para>
 162         </section>
 163         <section id="DTV-FREQUENCY">
 164                 <title><constant>DTV_FREQUENCY</constant></title>
 165
 166                 <para>Central frequency of the channel, in HZ.</para>
 167
 168                 <para>Notes:</para>
 169                 <para>1)For ISDB-T, the channels are usually transmitted with an offset of 143kHz.
 170                         E.g. a valid frequncy could be 474143 kHz. The stepping is bound to the bandwidth of
 171                         the channel which is 6MHz.</para>
 172
 173                 <para>2)As in ISDB-Tsb the channel consists of only one or three segments the
 174                         frequency step is 429kHz, 3*429 respectively. As for ISDB-T the
 175                         central frequency of the channel is expected.</para>
 176         </section>
 177         <section id="DTV-MODULATION">
 178         <title><constant>DTV_MODULATION</constant></title>
 179 <para>Specifies the frontend modulation type for cable and satellite types. The modulation can be one of the types bellow:</para>
 180 <programlisting>
 181  typedef enum fe_modulation {
 182         QPSK,
 183         QAM_16,
 184         QAM_32,
 185         QAM_64,
 186         QAM_128,
 187         QAM_256,
 188         QAM_AUTO,
 189         VSB_8,
 190         VSB_16,
 191         PSK_8,
 192         APSK_16,
 193         APSK_32,
 194         DQPSK,
 195  } fe_modulation_t;
 196 </programlisting>
 197         </section>
 198         <section id="DTV-BANDWIDTH-HZ">
 199                 <title><constant>DTV_BANDWIDTH_HZ</constant></title>
 200
 201                 <para>Bandwidth for the channel, in HZ.</para>
 202
 203                 <para>Possible values:
 204                         <constant>1712000</constant>,
 205                         <constant>5000000</constant>,
 206                         <constant>6000000</constant>,
 207                         <constant>7000000</constant>,
 208                         <constant>8000000</constant>,
 209                         <constant>10000000</constant>.
 210                 </para>
 211
 212                 <para>Notes:</para>
 213
 214                 <para>1) For ISDB-T it should be always 6000000Hz (6MHz)</para>
 215                 <para>2) For ISDB-Tsb it can vary depending on the number of connected segments</para>
 216                 <para>3) Bandwidth doesn't apply for DVB-C transmissions, as the bandwidth
 217                          for DVB-C depends on the symbol rate</para>
 218                 <para>4) Bandwidth in ISDB-T is fixed (6MHz) or can be easily derived from
 219                         other parameters (DTV_ISDBT_SB_SEGMENT_IDX,
 220                         DTV_ISDBT_SB_SEGMENT_COUNT).</para>
 221                 <para>5) DVB-T supports 6, 7 and 8MHz.</para>
 222                 <para>6) In addition, DVB-T2 supports 1.172, 5 and 10MHz.</para>
 223         </section>
 224         <section id="DTV-INVERSION">
 225         <title><constant>DTV_INVERSION</constant></title>
 226         <para>The Inversion field can take one of these values:
 227         </para>
 228         <programlisting>
 229         typedef enum fe_spectral_inversion {
 230                 INVERSION_OFF,
 231                 INVERSION_ON,
 232                 INVERSION_AUTO
 233         } fe_spectral_inversion_t;
 234         </programlisting>
 235         <para>It indicates if spectral inversion should be presumed or not. In the automatic setting
 236         (<constant>INVERSION_AUTO</constant>) the hardware will try to figure out the correct setting by
 237         itself.
 238         </para>
 239         </section>
 240         <section id="DTV-DISEQC-MASTER">
 241         <title><constant>DTV_DISEQC_MASTER</constant></title>
 242         <para>Currently not implemented.</para>
 243         </section>
 244         <section id="DTV-SYMBOL-RATE">
 245         <title><constant>DTV_SYMBOL_RATE</constant></title>
 246         <para>Digital TV symbol rate, in bauds (symbols/second). Used on cable standards.</para>
 247         </section>
 248         <section id="DTV-INNER-FEC">
 249         <title><constant>DTV_INNER_FEC</constant></title>
 250         <para>Used cable/satellite transmissions. The acceptable values are:
 251         </para>
 252         <programlisting>
 253 typedef enum fe_code_rate {
 254         FEC_NONE = 0,
 255         FEC_1_2,
 256         FEC_2_3,
 257         FEC_3_4,
 258         FEC_4_5,
 259         FEC_5_6,
 260         FEC_6_7,
 261         FEC_7_8,
 262         FEC_8_9,
 263         FEC_AUTO,
 264         FEC_3_5,
 265         FEC_9_10,
 266 } fe_code_rate_t;
 267         </programlisting>
 268         <para>which correspond to error correction rates of 1/2, 2/3, etc.,
 269         no error correction or auto detection.</para>
 270         </section>
 271         <section id="DTV-VOLTAGE">
 272         <title><constant>DTV_VOLTAGE</constant></title>
 273         <para>The voltage is usually used with non-DiSEqC capable LNBs to switch
 274         the polarzation (horizontal/vertical). When using DiSEqC epuipment this
 275         voltage has to be switched consistently to the DiSEqC commands as
 276         described in the DiSEqC spec.</para>
 277         <programlisting>
 278                 typedef enum fe_sec_voltage {
 279                 SEC_VOLTAGE_13,
 280                 SEC_VOLTAGE_18
 281                 } fe_sec_voltage_t;
 282         </programlisting>
 283         </section>
 284         <section id="DTV-TONE">
 285         <title><constant>DTV_TONE</constant></title>
 286         <para>Currently not used.</para>
 287         </section>
 288         <section id="DTV-PILOT">
 289         <title><constant>DTV_PILOT</constant></title>
 290         <para>Sets DVB-S2 pilot</para>
 291         <section id="fe-pilot-t">
 292                 <title>fe_pilot type</title>
 293                 <programlisting>
 294 typedef enum fe_pilot {
 295         PILOT_ON,
 296         PILOT_OFF,
 297         PILOT_AUTO,
 298 } fe_pilot_t;
 299                 </programlisting>
 300                 </section>
 301         </section>
 302         <section id="DTV-ROLLOFF">
 303         <title><constant>DTV_ROLLOFF</constant></title>
 304                 <para>Sets DVB-S2 rolloff</para>
 305
 306         <section id="fe-rolloff-t">
 307                 <title>fe_rolloff type</title>
 308                 <programlisting>
 309 typedef enum fe_rolloff {
 310         ROLLOFF_35, /* Implied value in DVB-S, default for DVB-S2 */
 311         ROLLOFF_20,
 312         ROLLOFF_25,
 313         ROLLOFF_AUTO,
 314 } fe_rolloff_t;
 315                 </programlisting>
 316                 </section>
 317         </section>
 318         <section id="DTV-DISEQC-SLAVE-REPLY">
 319         <title><constant>DTV_DISEQC_SLAVE_REPLY</constant></title>
 320         <para>Currently not implemented.</para>
 321         </section>
 322         <section id="DTV-FE-CAPABILITY-COUNT">
 323         <title><constant>DTV_FE_CAPABILITY_COUNT</constant></title>
 324         <para>Currently not implemented.</para>
 325         </section>
 326         <section id="DTV-FE-CAPABILITY">
 327         <title><constant>DTV_FE_CAPABILITY</constant></title>
 328         <para>Currently not implemented.</para>
 329         </section>
 330         <section id="DTV-DELIVERY-SYSTEM">
 331                 <title><constant>DTV_DELIVERY_SYSTEM</constant></title>
 332                 <para>Specifies the type of Delivery system</para>
 333                 <section id="fe-delivery-system-t">
 334                 <title>fe_delivery_system type</title>
 335                 <para>Possible values: </para>
 336 <programlisting>
 337 typedef enum fe_delivery_system {
 338         SYS_UNDEFINED,
 339         SYS_DVBC_ANNEX_AC,
 340         SYS_DVBC_ANNEX_B,
 341         SYS_DVBT,
 342         SYS_DSS,
 343         SYS_DVBS,
 344         SYS_DVBS2,
 345         SYS_DVBH,
 346         SYS_ISDBT,
 347         SYS_ISDBS,
 348         SYS_ISDBC,
 349         SYS_ATSC,
 350         SYS_ATSCMH,
 351         SYS_DMBTH,
 352         SYS_CMMB,
 353         SYS_DAB,
 354         SYS_DVBT2,
 355         SYS_TURBO,
 356 } fe_delivery_system_t;
 357 </programlisting>
 358                 </section>
 359         </section>
 360         <section id="DTV-ISDBT-PARTIAL-RECEPTION">
 361                 <title><constant>DTV_ISDBT_PARTIAL_RECEPTION</constant></title>
 362
 363                 <para>If <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '0' this bit-field represents whether
 364                         the channel is in partial reception mode or not.</para>
 365
 366                 <para>If '1' <constant>DTV_ISDBT_LAYERA_*</constant> values are assigned to the center segment and
 367                         <constant>DTV_ISDBT_LAYERA_SEGMENT_COUNT</constant> has to be '1'.</para>
 368
 369                 <para>If in addition <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'
 370                         <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> represents whether this ISDB-Tsb channel
 371                         is consisting of one segment and layer or three segments and two layers.</para>
 372
 373                 <para>Possible values: 0, 1, -1 (AUTO)</para>
 374         </section>
 375         <section id="DTV-ISDBT-SOUND-BROADCASTING">
 376                 <title><constant>DTV_ISDBT_SOUND_BROADCASTING</constant></title>
 377
 378                 <para>This field represents whether the other DTV_ISDBT_*-parameters are
 379                         referring to an ISDB-T and an ISDB-Tsb channel. (See also
 380                         <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>).</para>
 381
 382                 <para>Possible values: 0, 1, -1 (AUTO)</para>
 383         </section>
 384         <section id="DTV-ISDBT-SB-SUBCHANNEL-ID">
 385                 <title><constant>DTV_ISDBT_SB_SUBCHANNEL_ID</constant></title>
 386
 387                 <para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para>
 388
 389                 <para>(Note of the author: This might not be the correct description of the
 390                         <constant>SUBCHANNEL-ID</constant> in all details, but it is my understanding of the technical
 391                         background needed to program a device)</para>
 392
 393                 <para>An ISDB-Tsb channel (1 or 3 segments) can be broadcasted alone or in a
 394                         set of connected ISDB-Tsb channels. In this set of channels every
 395                         channel can be received independently. The number of connected
 396                         ISDB-Tsb segment can vary, e.g. depending on the frequency spectrum
 397                         bandwidth available.</para>
 398
 399                 <para>Example: Assume 8 ISDB-Tsb connected segments are broadcasted. The
 400                         broadcaster has several possibilities to put those channels in the
 401                         air: Assuming a normal 13-segment ISDB-T spectrum he can align the 8
 402                         segments from position 1-8 to 5-13 or anything in between.</para>
 403
 404                 <para>The underlying layer of segments are subchannels: each segment is
 405                         consisting of several subchannels with a predefined IDs. A sub-channel
 406                         is used to help the demodulator to synchronize on the channel.</para>
 407
 408                 <para>An ISDB-T channel is always centered over all sub-channels. As for
 409                         the example above, in ISDB-Tsb it is no longer as simple as that.</para>
 410
 411                 <para><constant>The DTV_ISDBT_SB_SUBCHANNEL_ID</constant> parameter is used to give the
 412                         sub-channel ID of the segment to be demodulated.</para>
 413
 414                 <para>Possible values: 0 .. 41, -1 (AUTO)</para>
 415         </section>
 416         <section id="DTV-ISDBT-SB-SEGMENT-IDX">
 417                 <title><constant>DTV_ISDBT_SB_SEGMENT_IDX</constant></title>
 418                 <para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para>
 419                 <para><constant>DTV_ISDBT_SB_SEGMENT_IDX</constant> gives the index of the segment to be
 420                         demodulated for an ISDB-Tsb channel where several of them are
 421                         transmitted in the connected manner.</para>
 422                 <para>Possible values: 0 .. <constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant> - 1</para>
 423                 <para>Note: This value cannot be determined by an automatic channel search.</para>
 424         </section>
 425         <section id="DTV-ISDBT-SB-SEGMENT-COUNT">
 426                 <title><constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant></title>
 427                 <para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para>
 428                 <para><constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant> gives the total count of connected ISDB-Tsb
 429                         channels.</para>
 430                 <para>Possible values: 1 .. 13</para>
 431                 <para>Note: This value cannot be determined by an automatic channel search.</para>
 432         </section>
 433         <section id="isdb-hierq-layers">
 434                 <title><constant>DTV-ISDBT-LAYER*</constant> parameters</title>
 435                 <para>ISDB-T channels can be coded hierarchically. As opposed to DVB-T in
 436                         ISDB-T hierarchical layers can be decoded simultaneously. For that
 437                         reason a ISDB-T demodulator has 3 viterbi and 3 reed-solomon-decoders.</para>
 438                 <para>ISDB-T has 3 hierarchical layers which each can use a part of the
 439                         available segments. The total number of segments over all layers has
 440                         to 13 in ISDB-T.</para>
 441                 <para>There are 3 parameter sets, for Layers A, B and C.</para>
 442                 <section id="DTV-ISDBT-LAYER-ENABLED">
 443                         <title><constant>DTV_ISDBT_LAYER_ENABLED</constant></title>
 444                         <para>Hierarchical reception in ISDB-T is achieved by enabling or disabling
 445                                 layers in the decoding process. Setting all bits of
 446                                 <constant>DTV_ISDBT_LAYER_ENABLED</constant> to '1' forces all layers (if applicable) to be
 447                                 demodulated. This is the default.</para>
 448                         <para>If the channel is in the partial reception mode
 449                                 (<constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> = 1) the central segment can be decoded
 450                                 independently of the other 12 segments. In that mode layer A has to
 451                                 have a <constant>SEGMENT_COUNT</constant> of 1.</para>
 452                         <para>In ISDB-Tsb only layer A is used, it can be 1 or 3 in ISDB-Tsb
 453                                 according to <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>. <constant>SEGMENT_COUNT</constant> must be filled
 454                                 accordingly.</para>
 455                         <para>Possible values: 0x1, 0x2, 0x4 (|-able)</para>
 456                         <para><constant>DTV_ISDBT_LAYER_ENABLED[0:0]</constant> - layer A</para>
 457                         <para><constant>DTV_ISDBT_LAYER_ENABLED[1:1]</constant> - layer B</para>
 458                         <para><constant>DTV_ISDBT_LAYER_ENABLED[2:2]</constant> - layer C</para>
 459                         <para><constant>DTV_ISDBT_LAYER_ENABLED[31:3]</constant> unused</para>
 460                 </section>
 461                 <section id="DTV-ISDBT-LAYER-FEC">
 462                         <title><constant>DTV_ISDBT_LAYER*_FEC</constant></title>
 463                         <para>Possible values: <constant>FEC_AUTO</constant>, <constant>FEC_1_2</constant>, <constant>FEC_2_3</constant>, <constant>FEC_3_4</constant>, <constant>FEC_5_6</constant>, <constant>FEC_7_8</constant></para>
 464                 </section>
 465                 <section id="DTV-ISDBT-LAYER-MODULATION">
 466                         <title><constant>DTV_ISDBT_LAYER*_MODULATION</constant></title>
 467                         <para>Possible values: <constant>QAM_AUTO</constant>, QP<constant>SK, QAM_16</constant>, <constant>QAM_64</constant>, <constant>DQPSK</constant></para>
 468                         <para>Note: If layer C is <constant>DQPSK</constant> layer B has to be <constant>DQPSK</constant>. If layer B is <constant>DQPSK</constant>
 469                                 and <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>=0 layer has to be <constant>DQPSK</constant>.</para>
 470                 </section>
 471                 <section id="DTV-ISDBT-LAYER-SEGMENT-COUNT">
 472                         <title><constant>DTV_ISDBT_LAYER*_SEGMENT_COUNT</constant></title>
 473                         <para>Possible values: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, -1 (AUTO)</para>
 474                         <para>Note: Truth table for <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> and
 475                                 <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> and <constant>LAYER</constant>*_SEGMENT_COUNT</para>
 476                         <informaltable id="isdbt-layer_seg-cnt-table">
 477                                 <tgroup cols="6">
 478                                         <tbody>
 479                                                 <row>
 480                                                         <entry>PR</entry>
 481                                                         <entry>SB</entry>
 482                                                         <entry>Layer A width</entry>
 483                                                         <entry>Layer B width</entry>
 484                                                         <entry>Layer C width</entry>
 485                                                         <entry>total width</entry>
 486                                                 </row>
 487                                                 <row>
 488                                                         <entry>0</entry>
 489                                                         <entry>0</entry>
 490                                                         <entry>1 .. 13</entry>
 491                                                         <entry>1 .. 13</entry>
 492                                                         <entry>1 .. 13</entry>
 493                                                         <entry>13</entry>
 494                                                 </row>
 495                                                 <row>
 496                                                         <entry>1</entry>
 497                                                         <entry>0</entry>
 498                                                         <entry>1</entry>
 499                                                         <entry>1 .. 13</entry>
 500                                                         <entry>1 .. 13</entry>
 501                                                         <entry>13</entry>
 502                                                 </row>
 503                                                 <row>
 504                                                         <entry>0</entry>
 505                                                         <entry>1</entry>
 506                                                         <entry>1</entry>
 507                                                         <entry>0</entry>
 508                                                         <entry>0</entry>
 509                                                         <entry>1</entry>
 510                                                 </row>
 511                                                 <row>
 512                                                         <entry>1</entry>
 513                                                         <entry>1</entry>
 514                                                         <entry>1</entry>
 515                                                         <entry>2</entry>
 516                                                         <entry>0</entry>
 517                                                         <entry>13</entry>
 518                                                 </row>
 519                                         </tbody>
 520                                 </tgroup>
 521                         </informaltable>
 522                 </section>
 523                 <section id="DTV-ISDBT-LAYER-TIME-INTERLEAVING">
 524                         <title><constant>DTV_ISDBT_LAYER*_TIME_INTERLEAVING</constant></title>
 525                         <para>Possible values: 0, 1, 2, 3, -1 (AUTO)</para>
 526                         <para>Note: The real inter-leaver depth-names depend on the mode (fft-size); the values
 527                                 here are referring to what can be found in the TMCC-structure -
 528                                 independent of the mode.</para>
 529                 </section>
 530         </section>
 531         <section id="DTV-API-VERSION">
 532         <title><constant>DTV_API_VERSION</constant></title>
 533         <para>Returns the major/minor version of the DVB API</para>
 534         </section>
 535         <section id="DTV-CODE-RATE-HP">
 536         <title><constant>DTV_CODE_RATE_HP</constant></title>
 537         <para>Used on terrestrial transmissions. The acceptable values are:
 538         </para>
 539         <programlisting>
 540 typedef enum fe_code_rate {
 541         FEC_NONE = 0,
 542         FEC_1_2,
 543         FEC_2_3,
 544         FEC_3_4,
 545         FEC_4_5,
 546         FEC_5_6,
 547         FEC_6_7,
 548         FEC_7_8,
 549         FEC_8_9,
 550         FEC_AUTO,
 551         FEC_3_5,
 552         FEC_9_10,
 553 } fe_code_rate_t;
 554         </programlisting>
 555         </section>
 556         <section id="DTV-CODE-RATE-LP">
 557         <title><constant>DTV_CODE_RATE_LP</constant></title>
 558         <para>Used on terrestrial transmissions. The acceptable values are:
 559         </para>
 560         <programlisting>
 561 typedef enum fe_code_rate {
 562         FEC_NONE = 0,
 563         FEC_1_2,
 564         FEC_2_3,
 565         FEC_3_4,
 566         FEC_4_5,
 567         FEC_5_6,
 568         FEC_6_7,
 569         FEC_7_8,
 570         FEC_8_9,
 571         FEC_AUTO,
 572         FEC_3_5,
 573         FEC_9_10,
 574 } fe_code_rate_t;
 575         </programlisting>
 576         </section>
 577         <section id="DTV-GUARD-INTERVAL">
 578                 <title><constant>DTV_GUARD_INTERVAL</constant></title>
 579
 580                 <para>Possible values are:</para>
 581 <programlisting>
 582 typedef enum fe_guard_interval {
 583         GUARD_INTERVAL_1_32,
 584         GUARD_INTERVAL_1_16,
 585         GUARD_INTERVAL_1_8,
 586         GUARD_INTERVAL_1_4,
 587         GUARD_INTERVAL_AUTO,
 588         GUARD_INTERVAL_1_128,
 589         GUARD_INTERVAL_19_128,
 590         GUARD_INTERVAL_19_256,
 591 } fe_guard_interval_t;
 592 </programlisting>
 593
 594                 <para>Notes:</para>
 595                 <para>1) If <constant>DTV_GUARD_INTERVAL</constant> is set the <constant>GUARD_INTERVAL_AUTO</constant> the hardware will
 596                         try to find the correct guard interval (if capable) and will use TMCC to fill
 597                         in the missing parameters.</para>
 598                 <para>2) Intervals 1/128, 19/128 and 19/256 are used only for DVB-T2 at present</para>
 599         </section>
 600         <section id="DTV-TRANSMISSION-MODE">
 601                 <title><constant>DTV_TRANSMISSION_MODE</constant></title>
 602
 603                 <para>Specifies the number of carriers used by the standard</para>
 604
 605                 <para>Possible values are:</para>
 606 <programlisting>
 607 typedef enum fe_transmit_mode {
 608         TRANSMISSION_MODE_2K,
 609         TRANSMISSION_MODE_8K,
 610         TRANSMISSION_MODE_AUTO,
 611         TRANSMISSION_MODE_4K,
 612         TRANSMISSION_MODE_1K,
 613         TRANSMISSION_MODE_16K,
 614         TRANSMISSION_MODE_32K,
 615 } fe_transmit_mode_t;
 616 </programlisting>
 617                 <para>Notes:</para>
 618                 <para>1) ISDB-T supports three carrier/symbol-size: 8K, 4K, 2K. It is called
 619                         'mode' in the standard: Mode 1 is 2K, mode 2 is 4K, mode 3 is 8K</para>
 620
 621                 <para>2) If <constant>DTV_TRANSMISSION_MODE</constant> is set the <constant>TRANSMISSION_MODE_AUTO</constant> the
 622                         hardware will try to find the correct FFT-size (if capable) and will
 623                         use TMCC to fill in the missing parameters.</para>
 624                 <para>3) DVB-T specifies 2K and 8K as valid sizes.</para>
 625                 <para>4) DVB-T2 specifies 1K, 2K, 4K, 8K, 16K and 32K.</para>
 626         </section>
 627         <section id="DTV-HIERARCHY">
 628         <title><constant>DTV_HIERARCHY</constant></title>
 629         <para>Frontend hierarchy</para>
 630         <programlisting>
 631 typedef enum fe_hierarchy {
 632          HIERARCHY_NONE,
 633          HIERARCHY_1,
 634          HIERARCHY_2,
 635          HIERARCHY_4,
 636          HIERARCHY_AUTO
 637  } fe_hierarchy_t;
 638         </programlisting>
 639         </section>
 640         <section id="DTV-ISDBS-TS-ID">
 641         <title><constant>DTV_ISDBS_TS_ID</constant></title>
 642         <para>Currently unused.</para>
 643         </section>
 644         <section id="DTV-DVBT2-PLP-ID">
 645                 <title><constant>DTV_DVBT2_PLP_ID</constant></title>
 646                 <para>DVB-T2 supports Physical Layer Pipes (PLP) to allow transmission of
 647                         many data types via a single multiplex. The API will soon support this
 648                         at which point this section will be expanded.</para>
 649         </section>
 650 </section>
 651         <section id="frontend-property-terrestrial-systems">
 652         <title>Properties used on terrestrial delivery systems</title>
 653                 <section id="dvbt-params">
 654                         <title>DVB-T delivery system</title>
 655                         <para>The following parameters are valid for DVB-T:</para>
 656                         <itemizedlist mark='opencircle'>
 657                                 <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
 658                                 <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
 659                                 <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
 660                                 <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
 661                                 <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
 662                                 <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
 663                                 <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
 664                                 <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
 665                                 <listitem><para><link linkend="DTV-CODE-RATE-HP"><constant>DTV_CODE_RATE_HP</constant></link></para></listitem>
 666                                 <listitem><para><link linkend="DTV-CODE-RATE-LP"><constant>DTV_CODE_RATE_LP</constant></link></para></listitem>
 667                                 <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem>
 668                                 <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem>
 669                                 <listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem>
 670                         </itemizedlist>
 671                 </section>
 672                 <section id="dvbt2-params">
 673                         <title>DVB-T2 delivery system</title>
 674                         <para>DVB-T2 support is currently in the early stages
 675                         of development, so expect that this section maygrow and become
 676                         more detailed with time.</para>
 677                 <para>The following parameters are valid for DVB-T2:</para>
 678                 <itemizedlist mark='opencircle'>
 679                         <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
 680                         <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
 681                         <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
 682                         <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
 683                         <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
 684                         <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
 685                         <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
 686                         <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
 687                         <listitem><para><link linkend="DTV-CODE-RATE-HP"><constant>DTV_CODE_RATE_HP</constant></link></para></listitem>
 688                         <listitem><para><link linkend="DTV-CODE-RATE-LP"><constant>DTV_CODE_RATE_LP</constant></link></para></listitem>
 689                         <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem>
 690                         <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem>
 691                         <listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem>
 692                         <listitem><para><link linkend="DTV-DVBT2-PLP-ID"><constant>DTV_DVBT2_PLP_ID</constant></link></para></listitem>
 693                 </itemizedlist>
 694                 </section>
 695                 <section id="isdbt">
 696                 <title>ISDB-T delivery system</title>
 697                 <para>This ISDB-T/ISDB-Tsb API extension should reflect all information
 698                         needed to tune any ISDB-T/ISDB-Tsb hardware. Of course it is possible
 699                         that some very sophisticated devices won't need certain parameters to
 700                         tune.</para>
 701                 <para>The information given here should help application writers to know how
 702                         to handle ISDB-T and ISDB-Tsb hardware using the Linux DVB-API.</para>
 703                 <para>The details given here about ISDB-T and ISDB-Tsb are just enough to
 704                         basically show the dependencies between the needed parameter values,
 705                         but surely some information is left out. For more detailed information
 706                         see the following documents:</para>
 707                 <para>ARIB STD-B31 - "Transmission System for Digital Terrestrial
 708                         Television Broadcasting" and</para>
 709                 <para>ARIB TR-B14 - "Operational Guidelines for Digital Terrestrial
 710                         Television Broadcasting".</para>
 711                 <para>In order to understand the ISDB specific parameters,
 712                         one has to have some knowledge the channel structure in
 713                         ISDB-T and ISDB-Tsb. I.e. it has to be known to
 714                         the reader that an ISDB-T channel consists of 13 segments,
 715                         that it can have up to 3 layer sharing those segments,
 716                         and things like that.</para>
 717                 <para>The following parameters are valid for ISDB-T:</para>
 718                 <itemizedlist mark='opencircle'>
 719                         <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
 720                         <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
 721                         <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
 722                         <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
 723                         <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
 724                         <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
 725                         <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
 726                         <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
 727                         <listitem><para><link linkend="DTV-CODE-RATE-HP"><constant>DTV_CODE_RATE_HP</constant></link></para></listitem>
 728                         <listitem><para><link linkend="DTV-CODE-RATE-LP"><constant>DTV_CODE_RATE_LP</constant></link></para></listitem>
 729                         <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem>
 730                         <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem>
 731                         <listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem>
 732                         <listitem><para><link linkend="DTV-ISDBT-LAYER-ENABLED"><constant>DTV_ISDBT_LAYER_ENABLED</constant></link></para></listitem>
 733                         <listitem><para><link linkend="DTV-ISDBT-PARTIAL-RECEPTION"><constant>DTV_ISDBT_PARTIAL_RECEPTION</constant></link></para></listitem>
 734                         <listitem><para><link linkend="DTV-ISDBT-SOUND-BROADCASTING"><constant>DTV_ISDBT_SOUND_BROADCASTING</constant></link></para></listitem>
 735                         <listitem><para><link linkend="DTV-ISDBT-SB-SUBCHANNEL-ID"><constant>DTV_ISDBT_SB_SUBCHANNEL_ID</constant></link></para></listitem>
 736                         <listitem><para><link linkend="DTV-ISDBT-SB-SEGMENT-IDX"><constant>DTV_ISDBT_SB_SEGMENT_IDX</constant></link></para></listitem>
 737                         <listitem><para><link linkend="DTV-ISDBT-SB-SEGMENT-COUNT"><constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant></link></para></listitem>
 738                         <listitem><para><link linkend="DTV-ISDBT-LAYER-FEC"><constant>DTV_ISDBT_LAYERA_FEC</constant></link></para></listitem>
 739                         <listitem><para><link linkend="DTV-ISDBT-LAYER-MODULATION"><constant>DTV_ISDBT_LAYERA_MODULATION</constant></link></para></listitem>
 740                         <listitem><para><link linkend="DTV-ISDBT-LAYER-SEGMENT-COUNT"><constant>DTV_ISDBT_LAYERA_SEGMENT_COUNT</constant></link></para></listitem>
 741                         <listitem><para><link linkend="DTV-ISDBT-LAYER-TIME-INTERLEAVING"><constant>DTV_ISDBT_LAYERA_TIME_INTERLEAVING</constant></link></para></listitem>
 742                         <listitem><para><link linkend="DTV-ISDBT-LAYER-FEC"><constant>DTV_ISDBT_LAYERB_FEC</constant></link></para></listitem>
 743                         <listitem><para><link linkend="DTV-ISDBT-LAYER-MODULATION"><constant>DTV_ISDBT_LAYERB_MODULATION</constant></link></para></listitem>
 744                         <listitem><para><link linkend="DTV-ISDBT-LAYER-SEGMENT-COUNT"><constant>DTV_ISDBT_LAYERB_SEGMENT_COUNT</constant></link></para></listitem>
 745                         <listitem><para><link linkend="DTV-ISDBT-LAYER-TIME-INTERLEAVING"><constant>DTV_ISDBT_LAYERB_TIME_INTERLEAVING</constant></link></para></listitem>
 746                         <listitem><para><link linkend="DTV-ISDBT-LAYER-FEC"><constant>DTV_ISDBT_LAYERC_FEC</constant></link></para></listitem>
 747                         <listitem><para><link linkend="DTV-ISDBT-LAYER-MODULATION"><constant>DTV_ISDBT_LAYERC_MODULATION</constant></link></para></listitem>
 748                         <listitem><para><link linkend="DTV-ISDBT-LAYER-SEGMENT-COUNT"><constant>DTV_ISDBT_LAYERC_SEGMENT_COUNT</constant></link></para></listitem>
 749                         <listitem><para><link linkend="DTV-ISDBT-LAYER-TIME-INTERLEAVING"><constant>DTV_ISDBT_LAYERC_TIME_INTERLEAVING</constant></link></para></listitem>
 750                 </itemizedlist>
 751                 </section>
 752                 <section id="atsc-params">
 753                         <title>ATSC delivery system</title>
 754                         <para>The following parameters are valid for ATSC:</para>
 755                         <itemizedlist mark='opencircle'>
 756                                 <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
 757                                 <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
 758                                 <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
 759                                 <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
 760                                 <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
 761                                 <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
 762                                 <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
 763                         </itemizedlist>
 764                 </section>
 765         </section>
 766         <section id="frontend-property-cable-systems">
 767         <title>Properties used on cable delivery systems</title>
 768         <section id="dvbc-params">
 769                 <title>DVB-C delivery system</title>
 770                 <para>The DVB-C Annex-A/C is the widely used cable standard. Transmission uses QAM modulation.</para>
 771                 <para>The following parameters are valid for DVB-C Annex A/C:</para>
 772                 <itemizedlist mark='opencircle'>
 773                         <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
 774                         <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
 775                         <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
 776                         <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
 777                         <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
 778                         <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
 779                         <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
 780                         <listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem>
 781                         <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem>
 782                 </itemizedlist>
 783         </section>
 784         <section id="dvbc-annex-b-params">
 785                 <title>DVB-C Annex B delivery system</title>
 786                 <para>The DVB-C Annex-B is only used on a few Countries like the United States.</para>
 787                 <para>The following parameters are valid for DVB-C Annex B:</para>
 788                 <itemizedlist mark='opencircle'>
 789                         <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
 790                         <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
 791                         <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
 792                         <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
 793                         <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
 794                         <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
 795                         <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
 796                 </itemizedlist>
 797         </section>
 798         </section>
 799         <section id="frontend-property-satellital-systems">
 800         <title>Properties used on satellital delivery systems</title>
 801         <section id="dvbs-params">
 802                 <title>DVB-S delivery system</title>
 803                 <para>The following parameters are valid for DVB-S:</para>
 804                 <itemizedlist mark='opencircle'>
 805                         <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
 806                         <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
 807                         <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
 808                         <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
 809                         <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
 810                         <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
 811                         <listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem>
 812                         <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem>
 813                         <listitem><para><link linkend="DTV-VOLTAGE"><constant>DTV_VOLTAGE</constant></link></para></listitem>
 814                         <listitem><para><link linkend="DTV-TONE"><constant>DTV_TONE</constant></link></para></listitem>
 815                 </itemizedlist>
 816                 <para>Future implementations might add those two missing parameters:</para>
 817                 <itemizedlist mark='opencircle'>
 818                         <listitem><para><link linkend="DTV-DISEQC-MASTER"><constant>DTV_DISEQC_MASTER</constant></link></para></listitem>
 819                         <listitem><para><link linkend="DTV-DISEQC-SLAVE-REPLY"><constant>DTV_DISEQC_SLAVE_REPLY</constant></link></para></listitem>
 820                 </itemizedlist>
 821         </section>
 822         <section id="dvbs2-params">
 823                 <title>DVB-S2 delivery system</title>
 824                 <para>In addition to all parameters valid for DVB-S, DVB-S2 supports the following parameters:</para>
 825                 <itemizedlist mark='opencircle'>
 826                         <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
 827                         <listitem><para><link linkend="DTV-PILOT"><constant>DTV_PILOT</constant></link></para></listitem>
 828                         <listitem><para><link linkend="DTV-ROLLOFF"><constant>DTV_ROLLOFF</constant></link></para></listitem>
 829                 </itemizedlist>
 830         </section>
 831         <section id="turbo-params">
 832                 <title>Turbo code delivery system</title>
 833                 <para>In addition to all parameters valid for DVB-S, turbo code supports the following parameters:</para>
 834                 <itemizedlist mark='opencircle'>
 835                         <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
 836                 </itemizedlist>
 837         </section>
 838         <section id="isdbs-params">
 839                 <title>ISDB-S delivery system</title>
 840                 <para>The following parameters are valid for ISDB-S:</para>
 841                 <itemizedlist mark='opencircle'>
 842                         <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
 843                         <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
 844                         <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
 845                         <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
 846                         <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
 847                         <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
 848                         <listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem>
 849                         <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem>
 850                         <listitem><para><link linkend="DTV-VOLTAGE"><constant>DTV_VOLTAGE</constant></link></para></listitem>
 851                         <listitem><para><link linkend="DTV-ISDBS-TS-ID"><constant>DTV_ISDBS_TS_ID</constant></link></para></listitem>
 852                 </itemizedlist>
 853         </section>
 854         </section>
 855 </section>