Documentation/DocBook/media/dvb/dvbproperty.xml

   1 <section id="frontend-properties">
   2 <title>DVB Frontend properties</title>
   3 <para>Tuning into a Digital TV physical channel and starting decoding it
   4     requires changing a set of parameters, in order to control the
   5     tuner, the demodulator, the Linear Low-noise Amplifier (LNA) and to set the
   6     antenna subsystem via Satellite Equipment Control (SEC), on satellite
   7     systems. The actual parameters are specific to each particular digital
   8     TV standards, and may change as the digital TV specs evolves.</para>
   9 <para>In the past, the strategy used was to have a union with the parameters
  10     needed to tune for DVB-S, DVB-C, DVB-T and ATSC delivery systems grouped
  11     there. The problem is that, as the second generation standards appeared,
  12     those structs were not big enough to contain the additional parameters.
  13     Also, the union didn't have any space left to be expanded without breaking
  14     userspace. So, the decision was to deprecate the legacy union/struct based
  15     approach, in favor of a properties set approach.</para>
  16
  17 <para>NOTE: on Linux DVB API version 3, setting a frontend were done via
  18     <link linkend="dvb-frontend-parameters">struct  <constant>dvb_frontend_parameters</constant></link>.
  19     This got replaced on version 5 (also called "S2API", as this API were
  20     added originally_enabled to provide support for DVB-S2), because the old
  21     API has a very limited support to new standards and new hardware. This
  22     section describes the new and recommended way to set the frontend, with
  23     suppports all digital TV delivery systems.</para>
  24
  25 <para>Example: with the properties based approach, in order to set the tuner
  26     to a DVB-C channel at 651 kHz, modulated with 256-QAM, FEC 3/4 and symbol
  27     rate of 5.217 Mbauds, those properties should be sent to
  28     <link linkend="FE_GET_PROPERTY"><constant>FE_SET_PROPERTY</constant></link> ioctl:</para>
  29     <itemizedlist>
  30         <listitem><para>&DTV-DELIVERY-SYSTEM; = SYS_DVBC_ANNEX_A</para></listitem>
  31         <listitem><para>&DTV-FREQUENCY; = 651000000</para></listitem>
  32         <listitem><para>&DTV-MODULATION; = QAM_256</para></listitem>
  33         <listitem><para>&DTV-INVERSION; = INVERSION_AUTO</para></listitem>
  34         <listitem><para>&DTV-SYMBOL-RATE; = 5217000</para></listitem>
  35         <listitem><para>&DTV-INNER-FEC; = FEC_3_4</para></listitem>
  36         <listitem><para>&DTV-TUNE;</para></listitem>
  37     </itemizedlist>
  38
  39 <para>The code that would do the above is:</para>
  40 <programlisting>
  41 #include &lt;stdio.h&gt;
  42 #include &lt;fcntl.h&gt;
  43 #include &lt;sys/ioctl.h&gt;
  44 #include &lt;linux/dvb/frontend.h&gt;
  45
  46 static struct dtv_property props[] = {
  47         { .cmd = DTV_DELIVERY_SYSTEM, .u.data = SYS_DVBC_ANNEX_A },
  48         { .cmd = DTV_FREQUENCY,       .u.data = 651000000 },
  49         { .cmd = DTV_MODULATION,      .u.data = QAM_256 },
  50         { .cmd = DTV_INVERSION,       .u.data = INVERSION_AUTO },
  51         { .cmd = DTV_SYMBOL_RATE,     .u.data = 5217000 },
  52         { .cmd = DTV_INNER_FEC,       .u.data = FEC_3_4 },
  53         { .cmd = DTV_TUNE }
  54 };
  55
  56 static struct dtv_properties dtv_prop = {
  57         .num = 6, .props = props
  58 };
  59
  60 int main(void)
  61 {
  62         int fd = open("/dev/dvb/adapter0/frontend0", O_RDWR);
  63
  64         if (!fd) {
  65             perror ("open");
  66             return -1;
  67         }
  68         if (ioctl(fd, FE_SET_PROPERTY, &amp;dtv_prop) == -1) {
  69                 perror("ioctl");
  70                 return -1;
  71         }
  72         printf("Frontend set\n");
  73         return 0;
  74 }
  75 </programlisting>
  76
  77 <para>NOTE: While it is possible to directly call the Kernel code like the
  78     above example, it is strongly recommended to use
  79     <ulink url="https://linuxtv.org/docs/libdvbv5/index.html">libdvbv5</ulink>,
  80     as it provides abstraction to work with the supported digital TV standards
  81     and provides methods for usual operations like program scanning and to
  82     read/write channel descriptor files.</para>
  83
  84 <section id="dtv-stats">
  85 <title>struct <structname>dtv_stats</structname></title>
  86 <programlisting>
  87 struct dtv_stats {
  88         __u8 scale;     /* enum fecap_scale_params type */
  89         union {
  90                 __u64 uvalue;   /* for counters and relative scales */
  91                 __s64 svalue;   /* for 1/1000 dB measures */
  92         };
  93 } __packed;
  94 </programlisting>
  95 </section>
  96 <section id="dtv-fe-stats">
  97 <title>struct <structname>dtv_fe_stats</structname></title>
  98 <programlisting>
  99 #define MAX_DTV_STATS   4
 100
 101 struct dtv_fe_stats {
 102         __u8 len;
 103         &dtv-stats; stat[MAX_DTV_STATS];
 104 } __packed;
 105 </programlisting>
 106 </section>
 107
 108 <section id="dtv-property">
 109 <title>struct <structname>dtv_property</structname></title>
 110 <programlisting>
 111 /* Reserved fields should be set to 0 */
 112
 113 struct dtv_property {
 114         __u32 cmd;
 115         __u32 reserved[3];
 116         union {
 117                 __u32 data;
 118                 &dtv-fe-stats; st;
 119                 struct {
 120                         __u8 data[32];
 121                         __u32 len;
 122                         __u32 reserved1[3];
 123                         void *reserved2;
 124                 } buffer;
 125         } u;
 126         int result;
 127 } __attribute__ ((packed));
 128
 129 /* num of properties cannot exceed DTV_IOCTL_MAX_MSGS per ioctl */
 130 #define DTV_IOCTL_MAX_MSGS 64
 131 </programlisting>
 132 </section>
 133 <section id="dtv-properties">
 134 <title>struct <structname>dtv_properties</structname></title>
 135 <programlisting>
 136 struct dtv_properties {
 137         __u32 num;
 138         &dtv-property; *props;
 139 };
 140 </programlisting>
 141 </section>
 142
 143 <section>
 144         <title>Property types</title>
 145 <para>
 146 On <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY and FE_SET_PROPERTY</link>,
 147 the actual action is determined by the dtv_property cmd/data pairs. With one single ioctl, is possible to
 148 get/set up to 64 properties. The actual meaning of each property is described on the next sections.
 149 </para>
 150
 151 <para>The available frontend property types are shown on the next section.</para>
 152 </section>
 153
 154 <section id="fe_property_parameters">
 155         <title>Digital TV property parameters</title>
 156         <section id="DTV-UNDEFINED">
 157         <title><constant>DTV_UNDEFINED</constant></title>
 158         <para>Used internally. A GET/SET operation for it won't change or return anything.</para>
 159         </section>
 160         <section id="DTV-TUNE">
 161         <title><constant>DTV_TUNE</constant></title>
 162         <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>
 163         </section>
 164         <section id="DTV-CLEAR">
 165         <title><constant>DTV_CLEAR</constant></title>
 166         <para>Reset a cache of data specific to the frontend here. This does not effect hardware.</para>
 167         </section>
 168         <section id="DTV-FREQUENCY">
 169                 <title><constant>DTV_FREQUENCY</constant></title>
 170
 171                 <para>Central frequency of the channel.</para>
 172
 173                 <para>Notes:</para>
 174                 <para>1)For satellite delivery systems, it is measured in kHz.
 175                         For the other ones, it is measured in Hz.</para>
 176                 <para>2)For ISDB-T, the channels are usually transmitted with an offset of 143kHz.
 177                         E.g. a valid frequency could be 474143 kHz. The stepping is bound to the bandwidth of
 178                         the channel which is 6MHz.</para>
 179
 180                 <para>3)As in ISDB-Tsb the channel consists of only one or three segments the
 181                         frequency step is 429kHz, 3*429 respectively. As for ISDB-T the
 182                         central frequency of the channel is expected.</para>
 183         </section>
 184         <section id="DTV-MODULATION">
 185         <title><constant>DTV_MODULATION</constant></title>
 186 <para>Specifies the frontend modulation type for delivery systems that supports
 187     more than one modulation type. The modulation can be one of the types
 188     defined by &fe-modulation;.</para>
 189
 190
 191 <section id="fe-modulation-t">
 192 <title>Modulation property</title>
 193
 194 <para>Most of the digital TV standards currently offers more than one possible
 195     modulation (sometimes called as "constellation" on some standards). This
 196     enum contains the values used by the Kernel. Please note that not all
 197     modulations are supported by a given standard.</para>
 198
 199 <table pgwide="1" frame="none" id="fe-modulation">
 200     <title>enum fe_modulation</title>
 201     <tgroup cols="2">
 202         &cs-def;
 203         <thead>
 204         <row>
 205             <entry>ID</entry>
 206             <entry>Description</entry>
 207         </row>
 208         </thead>
 209         <tbody valign="top">
 210         <row>
 211             <entry id="QPSK"><constant>QPSK</constant></entry>
 212             <entry>QPSK modulation</entry>
 213         </row><row>
 214             <entry id="QAM-16"><constant>QAM_16</constant></entry>
 215             <entry>16-QAM modulation</entry>
 216         </row><row>
 217             <entry id="QAM-32"><constant>QAM_32</constant></entry>
 218             <entry>32-QAM modulation</entry>
 219         </row><row>
 220             <entry id="QAM-64"><constant>QAM_64</constant></entry>
 221             <entry>64-QAM modulation</entry>
 222         </row><row>
 223             <entry id="QAM-128"><constant>QAM_128</constant></entry>
 224             <entry>128-QAM modulation</entry>
 225         </row><row>
 226             <entry id="QAM-256"><constant>QAM_256</constant></entry>
 227             <entry>256-QAM modulation</entry>
 228         </row><row>
 229             <entry id="QAM-AUTO"><constant>QAM_AUTO</constant></entry>
 230             <entry>Autodetect QAM modulation</entry>
 231         </row><row>
 232             <entry id="VSB-8"><constant>VSB_8</constant></entry>
 233             <entry>8-VSB modulation</entry>
 234         </row><row>
 235             <entry id="VSB-16"><constant>VSB_16</constant></entry>
 236             <entry>16-VSB modulation</entry>
 237         </row><row>
 238             <entry id="PSK-8"><constant>PSK_8</constant></entry>
 239             <entry>8-PSK modulation</entry>
 240         </row><row>
 241             <entry id="APSK-16"><constant>APSK_16</constant></entry>
 242             <entry>16-APSK modulation</entry>
 243         </row><row>
 244             <entry id="APSK-32"><constant>APSK_32</constant></entry>
 245             <entry>32-APSK modulation</entry>
 246         </row><row>
 247             <entry id="DQPSK"><constant>DQPSK</constant></entry>
 248             <entry>DQPSK modulation</entry>
 249         </row><row>
 250             <entry id="QAM-4-NR"><constant>QAM_4_NR</constant></entry>
 251             <entry>4-QAM-NR modulation</entry>
 252         </row>
 253         </tbody>
 254     </tgroup>
 255 </table>
 256 </section>
 257
 258         </section>
 259         <section id="DTV-BANDWIDTH-HZ">
 260                 <title><constant>DTV_BANDWIDTH_HZ</constant></title>
 261
 262                 <para>Bandwidth for the channel, in HZ.</para>
 263
 264                 <para>Possible values:
 265                         <constant>1712000</constant>,
 266                         <constant>5000000</constant>,
 267                         <constant>6000000</constant>,
 268                         <constant>7000000</constant>,
 269                         <constant>8000000</constant>,
 270                         <constant>10000000</constant>.
 271                 </para>
 272
 273                 <para>Notes:</para>
 274
 275                 <para>1) For ISDB-T it should be always 6000000Hz (6MHz)</para>
 276                 <para>2) For ISDB-Tsb it can vary depending on the number of connected segments</para>
 277                 <para>3) Bandwidth doesn't apply for DVB-C transmissions, as the bandwidth
 278                          for DVB-C depends on the symbol rate</para>
 279                 <para>4) Bandwidth in ISDB-T is fixed (6MHz) or can be easily derived from
 280                         other parameters (DTV_ISDBT_SB_SEGMENT_IDX,
 281                         DTV_ISDBT_SB_SEGMENT_COUNT).</para>
 282                 <para>5) DVB-T supports 6, 7 and 8MHz.</para>
 283                 <para>6) In addition, DVB-T2 supports 1.172, 5 and 10MHz.</para>
 284         </section>
 285         <section id="DTV-INVERSION">
 286         <title><constant>DTV_INVERSION</constant></title>
 287
 288         <para>Specifies if the frontend should do spectral inversion or not.</para>
 289
 290 <section id="fe-spectral-inversion-t">
 291 <title>enum fe_modulation: Frontend spectral inversion</title>
 292
 293 <para>This parameter indicates if spectral inversion should be presumed or not.
 294     In the automatic setting (<constant>INVERSION_AUTO</constant>) the hardware
 295     will try to figure out the correct setting by itself. If the hardware
 296     doesn't support, the DVB core will try to lock at the carrier first with
 297     inversion off. If it fails, it will try to enable inversion.
 298 </para>
 299
 300 <table pgwide="1" frame="none" id="fe-spectral-inversion">
 301     <title>enum fe_modulation</title>
 302     <tgroup cols="2">
 303         &cs-def;
 304         <thead>
 305         <row>
 306             <entry>ID</entry>
 307             <entry>Description</entry>
 308         </row>
 309         </thead>
 310         <tbody valign="top">
 311         <row>
 312             <entry id="INVERSION-OFF"><constant>INVERSION_OFF</constant></entry>
 313             <entry>Don't do spectral band inversion.</entry>
 314         </row><row>
 315             <entry id="INVERSION-ON"><constant>INVERSION_ON</constant></entry>
 316             <entry>Do spectral band inversion.</entry>
 317         </row><row>
 318             <entry id="INVERSION-AUTO"><constant>INVERSION_AUTO</constant></entry>
 319             <entry>Autodetect spectral band inversion.</entry>
 320         </row>
 321         </tbody>
 322     </tgroup>
 323 </table>
 324 </section>
 325
 326         </section>
 327         <section id="DTV-DISEQC-MASTER">
 328         <title><constant>DTV_DISEQC_MASTER</constant></title>
 329         <para>Currently not implemented.</para>
 330         </section>
 331         <section id="DTV-SYMBOL-RATE">
 332         <title><constant>DTV_SYMBOL_RATE</constant></title>
 333         <para>Digital TV symbol rate, in bauds (symbols/second). Used on cable standards.</para>
 334         </section>
 335         <section id="DTV-INNER-FEC">
 336         <title><constant>DTV_INNER_FEC</constant></title>
 337         <para>Used cable/satellite transmissions. The acceptable values are:
 338         </para>
 339 <section id="fe-code-rate-t">
 340 <title>enum fe_code_rate: type of the Forward Error Correction.</title>
 341
 342 <table pgwide="1" frame="none" id="fe-code-rate">
 343     <title>enum fe_code_rate</title>
 344     <tgroup cols="2">
 345         &cs-def;
 346         <thead>
 347         <row>
 348             <entry>ID</entry>
 349             <entry>Description</entry>
 350         </row>
 351         </thead>
 352         <tbody valign="top">
 353         <row>
 354             <entry id="FEC-NONE"><constant>FEC_NONE</constant></entry>
 355             <entry>No Forward Error Correction Code</entry>
 356         </row><row>
 357             <entry id="FEC-AUTO"><constant>FEC_AUTO</constant></entry>
 358             <entry>Autodetect Error Correction Code</entry>
 359         </row><row>
 360             <entry id="FEC-1-2"><constant>FEC_1_2</constant></entry>
 361             <entry>Forward Error Correction Code 1/2</entry>
 362         </row><row>
 363             <entry id="FEC-2-3"><constant>FEC_2_3</constant></entry>
 364             <entry>Forward Error Correction Code 2/3</entry>
 365         </row><row>
 366             <entry id="FEC-3-4"><constant>FEC_3_4</constant></entry>
 367             <entry>Forward Error Correction Code 3/4</entry>
 368         </row><row>
 369             <entry id="FEC-4-5"><constant>FEC_4_5</constant></entry>
 370             <entry>Forward Error Correction Code 4/5</entry>
 371         </row><row>
 372             <entry id="FEC-5-6"><constant>FEC_5_6</constant></entry>
 373             <entry>Forward Error Correction Code 5/6</entry>
 374         </row><row>
 375             <entry id="FEC-6-7"><constant>FEC_6_7</constant></entry>
 376             <entry>Forward Error Correction Code 6/7</entry>
 377         </row><row>
 378             <entry id="FEC-7-8"><constant>FEC_7_8</constant></entry>
 379             <entry>Forward Error Correction Code 7/8</entry>
 380         </row><row>
 381             <entry id="FEC-8-9"><constant>FEC_8_9</constant></entry>
 382             <entry>Forward Error Correction Code 8/9</entry>
 383         </row><row>
 384             <entry id="FEC-9-10"><constant>FEC_9_10</constant></entry>
 385             <entry>Forward Error Correction Code 9/10</entry>
 386         </row><row>
 387             <entry id="FEC-2-5"><constant>FEC_2_5</constant></entry>
 388             <entry>Forward Error Correction Code 2/5</entry>
 389         </row><row>
 390             <entry id="FEC-3-5"><constant>FEC_3_5</constant></entry>
 391             <entry>Forward Error Correction Code 3/5</entry>
 392         </row>
 393         </tbody>
 394     </tgroup>
 395 </table>
 396 </section>
 397         </section>
 398         <section id="DTV-VOLTAGE">
 399         <title><constant>DTV_VOLTAGE</constant></title>
 400         <para>The voltage is usually used with non-DiSEqC capable LNBs to switch
 401         the polarzation (horizontal/vertical). When using DiSEqC epuipment this
 402         voltage has to be switched consistently to the DiSEqC commands as
 403         described in the DiSEqC spec.</para>
 404
 405 <table pgwide="1" frame="none" id="fe-sec-voltage">
 406     <title id="fe-sec-voltage-t">enum fe_sec_voltage</title>
 407     <tgroup cols="2">
 408         &cs-def;
 409         <thead>
 410         <row>
 411             <entry>ID</entry>
 412             <entry>Description</entry>
 413         </row>
 414         </thead>
 415         <tbody valign="top">
 416         <row>
 417             <entry align="char" id="SEC-VOLTAGE-13"><constant>SEC_VOLTAGE_13</constant></entry>
 418             <entry align="char">Set DC voltage level to 13V</entry>
 419         </row><row>
 420             <entry align="char" id="SEC-VOLTAGE-18"><constant>SEC_VOLTAGE_18</constant></entry>
 421             <entry align="char">Set DC voltage level to 18V</entry>
 422         </row><row>
 423             <entry align="char" id="SEC-VOLTAGE-OFF"><constant>SEC_VOLTAGE_OFF</constant></entry>
 424             <entry align="char">Don't send any voltage to the antenna</entry>
 425         </row>
 426         </tbody>
 427     </tgroup>
 428 </table>
 429         </section>
 430         <section id="DTV-TONE">
 431         <title><constant>DTV_TONE</constant></title>
 432         <para>Currently not used.</para>
 433         </section>
 434         <section id="DTV-PILOT">
 435         <title><constant>DTV_PILOT</constant></title>
 436         <para>Sets DVB-S2 pilot</para>
 437         <section id="fe-pilot-t">
 438                 <title>fe_pilot type</title>
 439 <table pgwide="1" frame="none" id="fe-pilot">
 440     <title>enum fe_pilot</title>
 441     <tgroup cols="2">
 442         &cs-def;
 443         <thead>
 444         <row>
 445             <entry>ID</entry>
 446             <entry>Description</entry>
 447         </row>
 448         </thead>
 449         <tbody valign="top">
 450         <row>
 451             <entry align="char" id="PILOT-ON"><constant>PILOT_ON</constant></entry>
 452             <entry align="char">Pilot tones enabled</entry>
 453         </row><row>
 454             <entry align="char" id="PILOT-OFF"><constant>PILOT_OFF</constant></entry>
 455             <entry align="char">Pilot tones disabled</entry>
 456         </row><row>
 457             <entry align="char" id="PILOT-AUTO"><constant>PILOT_AUTO</constant></entry>
 458             <entry align="char">Autodetect pilot tones</entry>
 459         </row>
 460         </tbody>
 461     </tgroup>
 462 </table>
 463                 </section>
 464         </section>
 465         <section id="DTV-ROLLOFF">
 466         <title><constant>DTV_ROLLOFF</constant></title>
 467                 <para>Sets DVB-S2 rolloff</para>
 468
 469         <section id="fe-rolloff-t">
 470                 <title>fe_rolloff type</title>
 471 <table pgwide="1" frame="none" id="fe-rolloff">
 472     <title>enum fe_rolloff</title>
 473     <tgroup cols="2">
 474         &cs-def;
 475         <thead>
 476         <row>
 477             <entry>ID</entry>
 478             <entry>Description</entry>
 479         </row>
 480         </thead>
 481         <tbody valign="top">
 482         <row>
 483             <entry align="char" id="ROLLOFF-35"><constant>ROLLOFF_35</constant></entry>
 484             <entry align="char">Roloff factor: &alpha;=35%</entry>
 485         </row><row>
 486             <entry align="char" id="ROLLOFF-20"><constant>ROLLOFF_20</constant></entry>
 487             <entry align="char">Roloff factor: &alpha;=20%</entry>
 488         </row><row>
 489             <entry align="char" id="ROLLOFF-25"><constant>ROLLOFF_25</constant></entry>
 490             <entry align="char">Roloff factor: &alpha;=25%</entry>
 491         </row><row>
 492             <entry align="char" id="ROLLOFF-AUTO"><constant>ROLLOFF_AUTO</constant></entry>
 493             <entry align="char">Auto-detect the roloff factor.</entry>
 494         </row>
 495         </tbody>
 496     </tgroup>
 497 </table>
 498                 </section>
 499         </section>
 500         <section id="DTV-DISEQC-SLAVE-REPLY">
 501         <title><constant>DTV_DISEQC_SLAVE_REPLY</constant></title>
 502         <para>Currently not implemented.</para>
 503         </section>
 504         <section id="DTV-FE-CAPABILITY-COUNT">
 505         <title><constant>DTV_FE_CAPABILITY_COUNT</constant></title>
 506         <para>Currently not implemented.</para>
 507         </section>
 508         <section id="DTV-FE-CAPABILITY">
 509         <title><constant>DTV_FE_CAPABILITY</constant></title>
 510         <para>Currently not implemented.</para>
 511         </section>
 512         <section id="DTV-DELIVERY-SYSTEM">
 513                 <title><constant>DTV_DELIVERY_SYSTEM</constant></title>
 514                 <para>Specifies the type of Delivery system</para>
 515                 <section id="fe-delivery-system-t">
 516                 <title>fe_delivery_system type</title>
 517                 <para>Possible values: </para>
 518
 519 <table pgwide="1" frame="none" id="fe-delivery-system">
 520     <title>enum fe_delivery_system</title>
 521     <tgroup cols="2">
 522         &cs-def;
 523         <thead>
 524         <row>
 525             <entry>ID</entry>
 526             <entry>Description</entry>
 527         </row>
 528         </thead>
 529         <tbody valign="top">
 530         <row>
 531                 <entry id="SYS-UNDEFINED"><constant>SYS_UNDEFINED</constant></entry>
 532                 <entry>Undefined standard. Generally, indicates an error</entry>
 533         </row><row>
 534                 <entry id="SYS-DVBC-ANNEX-A"><constant>SYS_DVBC_ANNEX_A</constant></entry>
 535                 <entry>Cable TV: DVB-C following ITU-T J.83 Annex A spec</entry>
 536         </row><row>
 537                 <entry id="SYS-DVBC-ANNEX-B"><constant>SYS_DVBC_ANNEX_B</constant></entry>
 538                 <entry>Cable TV: DVB-C following ITU-T J.83 Annex B spec (ClearQAM)</entry>
 539         </row><row>
 540                 <entry id="SYS-DVBC-ANNEX-C"><constant>SYS_DVBC_ANNEX_C</constant></entry>
 541                 <entry>Cable TV: DVB-C following ITU-T J.83 Annex C spec</entry>
 542         </row><row>
 543                 <entry id="SYS-ISDBC"><constant>SYS_ISDBC</constant></entry>
 544                 <entry>Cable TV: ISDB-C (no drivers yet)</entry>
 545         </row><row>
 546                 <entry id="SYS-DVBT"><constant>SYS_DVBT</constant></entry>
 547                 <entry>Terrestral TV: DVB-T</entry>
 548         </row><row>
 549                 <entry id="SYS-DVBT2"><constant>SYS_DVBT2</constant></entry>
 550                 <entry>Terrestral TV: DVB-T2</entry>
 551         </row><row>
 552                 <entry id="SYS-ISDBT"><constant>SYS_ISDBT</constant></entry>
 553                 <entry>Terrestral TV: ISDB-T</entry>
 554         </row><row>
 555                 <entry id="SYS-ATSC"><constant>SYS_ATSC</constant></entry>
 556                 <entry>Terrestral TV: ATSC</entry>
 557         </row><row>
 558                 <entry id="SYS-ATSCMH"><constant>SYS_ATSCMH</constant></entry>
 559                 <entry>Terrestral TV (mobile): ATSC-M/H</entry>
 560         </row><row>
 561                 <entry id="SYS-DTMB"><constant>SYS_DTMB</constant></entry>
 562                 <entry>Terrestrial TV: DTMB</entry>
 563         </row><row>
 564                 <entry id="SYS-DVBS"><constant>SYS_DVBS</constant></entry>
 565                 <entry>Satellite TV: DVB-S</entry>
 566         </row><row>
 567                 <entry id="SYS-DVBS2"><constant>SYS_DVBS2</constant></entry>
 568                 <entry>Satellite TV: DVB-S2</entry>
 569         </row><row>
 570                 <entry id="SYS-TURBO"><constant>SYS_TURBO</constant></entry>
 571                 <entry>Satellite TV: DVB-S Turbo</entry>
 572         </row><row>
 573                 <entry id="SYS-ISDBS"><constant>SYS_ISDBS</constant></entry>
 574                 <entry>Satellite TV: ISDB-S</entry>
 575         </row><row>
 576                 <entry id="SYS-DAB"><constant>SYS_DAB</constant></entry>
 577                 <entry>Digital audio: DAB (not fully supported)</entry>
 578         </row><row>
 579                 <entry id="SYS-DSS"><constant>SYS_DSS</constant></entry>
 580                 <entry>Satellite TV:"DSS (not fully supported)</entry>
 581         </row><row>
 582                 <entry id="SYS-CMMB"><constant>SYS_CMMB</constant></entry>
 583                 <entry>Terrestral TV (mobile):CMMB (not fully supported)</entry>
 584         </row><row>
 585                 <entry id="SYS-DVBH"><constant>SYS_DVBH</constant></entry>
 586                 <entry>Terrestral TV (mobile): DVB-H (standard deprecated)</entry>
 587         </row>
 588         </tbody>
 589     </tgroup>
 590 </table>
 591
 592
 593 </section>
 594         </section>
 595         <section id="DTV-ISDBT-PARTIAL-RECEPTION">
 596                 <title><constant>DTV_ISDBT_PARTIAL_RECEPTION</constant></title>
 597
 598                 <para>If <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '0' this bit-field represents whether
 599                         the channel is in partial reception mode or not.</para>
 600
 601                 <para>If '1' <constant>DTV_ISDBT_LAYERA_*</constant> values are assigned to the center segment and
 602                         <constant>DTV_ISDBT_LAYERA_SEGMENT_COUNT</constant> has to be '1'.</para>
 603
 604                 <para>If in addition <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'
 605                         <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> represents whether this ISDB-Tsb channel
 606                         is consisting of one segment and layer or three segments and two layers.</para>
 607
 608                 <para>Possible values: 0, 1, -1 (AUTO)</para>
 609         </section>
 610         <section id="DTV-ISDBT-SOUND-BROADCASTING">
 611                 <title><constant>DTV_ISDBT_SOUND_BROADCASTING</constant></title>
 612
 613                 <para>This field represents whether the other DTV_ISDBT_*-parameters are
 614                         referring to an ISDB-T and an ISDB-Tsb channel. (See also
 615                         <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>).</para>
 616
 617                 <para>Possible values: 0, 1, -1 (AUTO)</para>
 618         </section>
 619         <section id="DTV-ISDBT-SB-SUBCHANNEL-ID">
 620                 <title><constant>DTV_ISDBT_SB_SUBCHANNEL_ID</constant></title>
 621
 622                 <para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para>
 623
 624                 <para>(Note of the author: This might not be the correct description of the
 625                         <constant>SUBCHANNEL-ID</constant> in all details, but it is my understanding of the technical
 626                         background needed to program a device)</para>
 627
 628                 <para>An ISDB-Tsb channel (1 or 3 segments) can be broadcasted alone or in a
 629                         set of connected ISDB-Tsb channels. In this set of channels every
 630                         channel can be received independently. The number of connected
 631                         ISDB-Tsb segment can vary, e.g. depending on the frequency spectrum
 632                         bandwidth available.</para>
 633
 634                 <para>Example: Assume 8 ISDB-Tsb connected segments are broadcasted. The
 635                         broadcaster has several possibilities to put those channels in the
 636                         air: Assuming a normal 13-segment ISDB-T spectrum he can align the 8
 637                         segments from position 1-8 to 5-13 or anything in between.</para>
 638
 639                 <para>The underlying layer of segments are subchannels: each segment is
 640                         consisting of several subchannels with a predefined IDs. A sub-channel
 641                         is used to help the demodulator to synchronize on the channel.</para>
 642
 643                 <para>An ISDB-T channel is always centered over all sub-channels. As for
 644                         the example above, in ISDB-Tsb it is no longer as simple as that.</para>
 645
 646                 <para><constant>The DTV_ISDBT_SB_SUBCHANNEL_ID</constant> parameter is used to give the
 647                         sub-channel ID of the segment to be demodulated.</para>
 648
 649                 <para>Possible values: 0 .. 41, -1 (AUTO)</para>
 650         </section>
 651         <section id="DTV-ISDBT-SB-SEGMENT-IDX">
 652                 <title><constant>DTV_ISDBT_SB_SEGMENT_IDX</constant></title>
 653                 <para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para>
 654                 <para><constant>DTV_ISDBT_SB_SEGMENT_IDX</constant> gives the index of the segment to be
 655                         demodulated for an ISDB-Tsb channel where several of them are
 656                         transmitted in the connected manner.</para>
 657                 <para>Possible values: 0 .. <constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant> - 1</para>
 658                 <para>Note: This value cannot be determined by an automatic channel search.</para>
 659         </section>
 660         <section id="DTV-ISDBT-SB-SEGMENT-COUNT">
 661                 <title><constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant></title>
 662                 <para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para>
 663                 <para><constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant> gives the total count of connected ISDB-Tsb
 664                         channels.</para>
 665                 <para>Possible values: 1 .. 13</para>
 666                 <para>Note: This value cannot be determined by an automatic channel search.</para>
 667         </section>
 668         <section id="isdb-hierq-layers">
 669                 <title><constant>DTV-ISDBT-LAYER*</constant> parameters</title>
 670                 <para>ISDB-T channels can be coded hierarchically. As opposed to DVB-T in
 671                         ISDB-T hierarchical layers can be decoded simultaneously. For that
 672                         reason a ISDB-T demodulator has 3 Viterbi and 3 Reed-Solomon decoders.</para>
 673                 <para>ISDB-T has 3 hierarchical layers which each can use a part of the
 674                         available segments. The total number of segments over all layers has
 675                         to 13 in ISDB-T.</para>
 676                 <para>There are 3 parameter sets, for Layers A, B and C.</para>
 677                 <section id="DTV-ISDBT-LAYER-ENABLED">
 678                         <title><constant>DTV_ISDBT_LAYER_ENABLED</constant></title>
 679                         <para>Hierarchical reception in ISDB-T is achieved by enabling or disabling
 680                                 layers in the decoding process. Setting all bits of
 681                                 <constant>DTV_ISDBT_LAYER_ENABLED</constant> to '1' forces all layers (if applicable) to be
 682                                 demodulated. This is the default.</para>
 683                         <para>If the channel is in the partial reception mode
 684                                 (<constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> = 1) the central segment can be decoded
 685                                 independently of the other 12 segments. In that mode layer A has to
 686                                 have a <constant>SEGMENT_COUNT</constant> of 1.</para>
 687                         <para>In ISDB-Tsb only layer A is used, it can be 1 or 3 in ISDB-Tsb
 688                                 according to <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>. <constant>SEGMENT_COUNT</constant> must be filled
 689                                 accordingly.</para>
 690                         <para>Possible values: 0x1, 0x2, 0x4 (|-able)</para>
 691                         <para><constant>DTV_ISDBT_LAYER_ENABLED[0:0]</constant> - layer A</para>
 692                         <para><constant>DTV_ISDBT_LAYER_ENABLED[1:1]</constant> - layer B</para>
 693                         <para><constant>DTV_ISDBT_LAYER_ENABLED[2:2]</constant> - layer C</para>
 694                         <para><constant>DTV_ISDBT_LAYER_ENABLED[31:3]</constant> unused</para>
 695                 </section>
 696                 <section id="DTV-ISDBT-LAYER-FEC">
 697                         <title><constant>DTV_ISDBT_LAYER*_FEC</constant></title>
 698                         <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>
 699                 </section>
 700                 <section id="DTV-ISDBT-LAYER-MODULATION">
 701                         <title><constant>DTV_ISDBT_LAYER*_MODULATION</constant></title>
 702                         <para>Possible values: <constant>QAM_AUTO</constant>, QP<constant>SK, QAM_16</constant>, <constant>QAM_64</constant>, <constant>DQPSK</constant></para>
 703                         <para>Note: If layer C is <constant>DQPSK</constant> layer B has to be <constant>DQPSK</constant>. If layer B is <constant>DQPSK</constant>
 704                                 and <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>=0 layer has to be <constant>DQPSK</constant>.</para>
 705                 </section>
 706                 <section id="DTV-ISDBT-LAYER-SEGMENT-COUNT">
 707                         <title><constant>DTV_ISDBT_LAYER*_SEGMENT_COUNT</constant></title>
 708                         <para>Possible values: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, -1 (AUTO)</para>
 709                         <para>Note: Truth table for <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> and
 710                                 <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> and <constant>LAYER</constant>*_SEGMENT_COUNT</para>
 711                         <informaltable id="isdbt-layer_seg-cnt-table">
 712                                 <tgroup cols="6">
 713                                         <tbody>
 714                                                 <row>
 715                                                         <entry>PR</entry>
 716                                                         <entry>SB</entry>
 717                                                         <entry>Layer A width</entry>
 718                                                         <entry>Layer B width</entry>
 719                                                         <entry>Layer C width</entry>
 720                                                         <entry>total width</entry>
 721                                                 </row>
 722                                                 <row>
 723                                                         <entry>0</entry>
 724                                                         <entry>0</entry>
 725                                                         <entry>1 .. 13</entry>
 726                                                         <entry>1 .. 13</entry>
 727                                                         <entry>1 .. 13</entry>
 728                                                         <entry>13</entry>
 729                                                 </row>
 730                                                 <row>
 731                                                         <entry>1</entry>
 732                                                         <entry>0</entry>
 733                                                         <entry>1</entry>
 734                                                         <entry>1 .. 13</entry>
 735                                                         <entry>1 .. 13</entry>
 736                                                         <entry>13</entry>
 737                                                 </row>
 738                                                 <row>
 739                                                         <entry>0</entry>
 740                                                         <entry>1</entry>
 741                                                         <entry>1</entry>
 742                                                         <entry>0</entry>
 743                                                         <entry>0</entry>
 744                                                         <entry>1</entry>
 745                                                 </row>
 746                                                 <row>
 747                                                         <entry>1</entry>
 748                                                         <entry>1</entry>
 749                                                         <entry>1</entry>
 750                                                         <entry>2</entry>
 751                                                         <entry>0</entry>
 752                                                         <entry>13</entry>
 753                                                 </row>
 754                                         </tbody>
 755                                 </tgroup>
 756                         </informaltable>
 757                 </section>
 758                 <section id="DTV-ISDBT-LAYER-TIME-INTERLEAVING">
 759                         <title><constant>DTV_ISDBT_LAYER*_TIME_INTERLEAVING</constant></title>
 760                         <para>Valid values: 0, 1, 2, 4, -1 (AUTO)</para>
 761                         <para>when DTV_ISDBT_SOUND_BROADCASTING is active, value 8 is also valid.</para>
 762                         <para>Note: The real time interleaving length depends on the mode (fft-size). The values
 763                                 here are referring to what can be found in the TMCC-structure, as shown in the table below.</para>
 764                         <informaltable id="isdbt-layer-interleaving-table">
 765                                 <tgroup cols="4" align="center">
 766                                         <tbody>
 767                                                 <row>
 768                                                         <entry>DTV_ISDBT_LAYER*_TIME_INTERLEAVING</entry>
 769                                                         <entry>Mode 1 (2K FFT)</entry>
 770                                                         <entry>Mode 2 (4K FFT)</entry>
 771                                                         <entry>Mode 3 (8K FFT)</entry>
 772                                                 </row>
 773                                                 <row>
 774                                                         <entry>0</entry>
 775                                                         <entry>0</entry>
 776                                                         <entry>0</entry>
 777                                                         <entry>0</entry>
 778                                                 </row>
 779                                                 <row>
 780                                                         <entry>1</entry>
 781                                                         <entry>4</entry>
 782                                                         <entry>2</entry>
 783                                                         <entry>1</entry>
 784                                                 </row>
 785                                                 <row>
 786                                                         <entry>2</entry>
 787                                                         <entry>8</entry>
 788                                                         <entry>4</entry>
 789                                                         <entry>2</entry>
 790                                                 </row>
 791                                                 <row>
 792                                                         <entry>4</entry>
 793                                                         <entry>16</entry>
 794                                                         <entry>8</entry>
 795                                                         <entry>4</entry>
 796                                                 </row>
 797                                         </tbody>
 798                                 </tgroup>
 799                         </informaltable>
 800                 </section>
 801                 <section id="DTV-ATSCMH-FIC-VER">
 802                         <title><constant>DTV_ATSCMH_FIC_VER</constant></title>
 803                         <para>Version number of the FIC (Fast Information Channel) signaling data.</para>
 804                         <para>FIC is used for relaying information to allow rapid service acquisition by the receiver.</para>
 805                         <para>Possible values: 0, 1, 2, 3, ..., 30, 31</para>
 806                 </section>
 807                 <section id="DTV-ATSCMH-PARADE-ID">
 808                         <title><constant>DTV_ATSCMH_PARADE_ID</constant></title>
 809                         <para>Parade identification number</para>
 810                         <para>A parade is a collection of up to eight MH groups, conveying one or two ensembles.</para>
 811                         <para>Possible values: 0, 1, 2, 3, ..., 126, 127</para>
 812                 </section>
 813                 <section id="DTV-ATSCMH-NOG">
 814                         <title><constant>DTV_ATSCMH_NOG</constant></title>
 815                         <para>Number of MH groups per MH subframe for a designated parade.</para>
 816                         <para>Possible values: 1, 2, 3, 4, 5, 6, 7, 8</para>
 817                 </section>
 818                 <section id="DTV-ATSCMH-TNOG">
 819                         <title><constant>DTV_ATSCMH_TNOG</constant></title>
 820                         <para>Total number of MH groups including all MH groups belonging to all MH parades in one MH subframe.</para>
 821                         <para>Possible values: 0, 1, 2, 3, ..., 30, 31</para>
 822                 </section>
 823                 <section id="DTV-ATSCMH-SGN">
 824                         <title><constant>DTV_ATSCMH_SGN</constant></title>
 825                         <para>Start group number.</para>
 826                         <para>Possible values: 0, 1, 2, 3, ..., 14, 15</para>
 827                 </section>
 828                 <section id="DTV-ATSCMH-PRC">
 829                         <title><constant>DTV_ATSCMH_PRC</constant></title>
 830                         <para>Parade repetition cycle.</para>
 831                         <para>Possible values: 1, 2, 3, 4, 5, 6, 7, 8</para>
 832                 </section>
 833                 <section id="DTV-ATSCMH-RS-FRAME-MODE">
 834                         <title><constant>DTV_ATSCMH_RS_FRAME_MODE</constant></title>
 835                         <para>Reed Solomon (RS) frame mode.</para>
 836                         <para>Possible values are:</para>
 837 <table pgwide="1" frame="none" id="atscmh-rs-frame-mode">
 838     <title>enum atscmh_rs_frame_mode</title>
 839     <tgroup cols="2">
 840         &cs-def;
 841         <thead>
 842         <row>
 843             <entry>ID</entry>
 844             <entry>Description</entry>
 845         </row>
 846         </thead>
 847         <tbody valign="top">
 848         <row>
 849             <entry id="ATSCMH-RSFRAME-PRI-ONLY"><constant>ATSCMH_RSFRAME_PRI_ONLY</constant></entry>
 850             <entry>Single Frame: There is only a primary RS Frame for all
 851                 Group Regions.</entry>
 852         </row><row>
 853             <entry id="ATSCMH-RSFRAME-PRI-SEC"><constant>ATSCMH_RSFRAME_PRI_SEC</constant></entry>
 854             <entry>Dual Frame: There are two separate RS Frames: Primary RS
 855                 Frame for Group Region A and B and Secondary RS Frame for Group
 856                 Region C and D.</entry>
 857         </row>
 858         </tbody>
 859     </tgroup>
 860 </table>
 861                 </section>
 862                 <section id="DTV-ATSCMH-RS-FRAME-ENSEMBLE">
 863                         <title><constant>DTV_ATSCMH_RS_FRAME_ENSEMBLE</constant></title>
 864                         <para>Reed Solomon(RS) frame ensemble.</para>
 865                         <para>Possible values are:</para>
 866 <table pgwide="1" frame="none" id="atscmh-rs-frame-ensemble">
 867     <title>enum atscmh_rs_frame_ensemble</title>
 868     <tgroup cols="2">
 869         &cs-def;
 870         <thead>
 871         <row>
 872             <entry>ID</entry>
 873             <entry>Description</entry>
 874         </row>
 875         </thead>
 876         <tbody valign="top">
 877         <row>
 878             <entry id="ATSCMH-RSFRAME-ENS-PRI"><constant>ATSCMH_RSFRAME_ENS_PRI</constant></entry>
 879             <entry>Primary Ensemble.</entry>
 880         </row><row>
 881             <entry id="ATSCMH-RSFRAME-ENS-SEC"><constant>AATSCMH_RSFRAME_PRI_SEC</constant></entry>
 882             <entry>Secondary Ensemble.</entry>
 883         </row><row>
 884             <entry id="ATSCMH-RSFRAME-RES"><constant>AATSCMH_RSFRAME_RES</constant></entry>
 885             <entry>Reserved. Shouldn't be used.</entry>
 886         </row>
 887         </tbody>
 888     </tgroup>
 889 </table>
 890                 </section>
 891                 <section id="DTV-ATSCMH-RS-CODE-MODE-PRI">
 892                         <title><constant>DTV_ATSCMH_RS_CODE_MODE_PRI</constant></title>
 893                         <para>Reed Solomon (RS) code mode (primary).</para>
 894                         <para>Possible values are:</para>
 895 <table pgwide="1" frame="none" id="atscmh-rs-code-mode">
 896     <title>enum atscmh_rs_code_mode</title>
 897     <tgroup cols="2">
 898         &cs-def;
 899         <thead>
 900         <row>
 901             <entry>ID</entry>
 902             <entry>Description</entry>
 903         </row>
 904         </thead>
 905         <tbody valign="top">
 906         <row>
 907             <entry id="ATSCMH-RSCODE-211-187"><constant>ATSCMH_RSCODE_211_187</constant></entry>
 908             <entry>Reed Solomon code (211,187).</entry>
 909         </row><row>
 910             <entry id="ATSCMH-RSCODE-223-187"><constant>ATSCMH_RSCODE_223_187</constant></entry>
 911             <entry>Reed Solomon code (223,187).</entry>
 912         </row><row>
 913             <entry id="ATSCMH-RSCODE-235-187"><constant>ATSCMH_RSCODE_235_187</constant></entry>
 914             <entry>Reed Solomon code (235,187).</entry>
 915         </row><row>
 916             <entry id="ATSCMH-RSCODE-RES"><constant>ATSCMH_RSCODE_RES</constant></entry>
 917             <entry>Reserved. Shouldn't be used.</entry>
 918         </row>
 919         </tbody>
 920     </tgroup>
 921 </table>
 922                 </section>
 923                 <section id="DTV-ATSCMH-RS-CODE-MODE-SEC">
 924                         <title><constant>DTV_ATSCMH_RS_CODE_MODE_SEC</constant></title>
 925                         <para>Reed Solomon (RS) code mode (secondary).</para>
 926                         <para>Possible values are the same as documented on
 927                             &atscmh-rs-code-mode;:</para>
 928                 </section>
 929                 <section id="DTV-ATSCMH-SCCC-BLOCK-MODE">
 930                         <title><constant>DTV_ATSCMH_SCCC_BLOCK_MODE</constant></title>
 931                         <para>Series Concatenated Convolutional Code Block Mode.</para>
 932                         <para>Possible values are:</para>
 933 <table pgwide="1" frame="none" id="atscmh-sccc-block-mode">
 934     <title>enum atscmh_scc_block_mode</title>
 935     <tgroup cols="2">
 936         &cs-def;
 937         <thead>
 938         <row>
 939             <entry>ID</entry>
 940             <entry>Description</entry>
 941         </row>
 942         </thead>
 943         <tbody valign="top">
 944         <row>
 945             <entry id="ATSCMH-SCCC-BLK-SEP"><constant>ATSCMH_SCCC_BLK_SEP</constant></entry>
 946             <entry>Separate SCCC: the SCCC outer code mode shall be set independently
 947                 for each Group Region (A, B, C, D)</entry>
 948         </row><row>
 949             <entry id="ATSCMH-SCCC-BLK-COMB"><constant>ATSCMH_SCCC_BLK_COMB</constant></entry>
 950             <entry>Combined SCCC: all four Regions shall have the same SCCC outer
 951                 code mode.</entry>
 952         </row><row>
 953             <entry id="ATSCMH-SCCC-BLK-RES"><constant>ATSCMH_SCCC_BLK_RES</constant></entry>
 954             <entry>Reserved. Shouldn't be used.</entry>
 955         </row>
 956         </tbody>
 957     </tgroup>
 958 </table>
 959                 </section>
 960                 <section id="DTV-ATSCMH-SCCC-CODE-MODE-A">
 961                         <title><constant>DTV_ATSCMH_SCCC_CODE_MODE_A</constant></title>
 962                         <para>Series Concatenated Convolutional Code Rate.</para>
 963                         <para>Possible values are:</para>
 964 <table pgwide="1" frame="none" id="atscmh-sccc-code-mode">
 965     <title>enum atscmh_sccc_code_mode</title>
 966     <tgroup cols="2">
 967         &cs-def;
 968         <thead>
 969         <row>
 970             <entry>ID</entry>
 971             <entry>Description</entry>
 972         </row>
 973         </thead>
 974         <tbody valign="top">
 975         <row>
 976             <entry id="ATSCMH-SCCC-CODE-HLF"><constant>ATSCMH_SCCC_CODE_HLF</constant></entry>
 977             <entry>The outer code rate of a SCCC Block is 1/2 rate.</entry>
 978         </row><row>
 979             <entry id="ATSCMH-SCCC-CODE-QTR"><constant>ATSCMH_SCCC_CODE_QTR</constant></entry>
 980             <entry>The outer code rate of a SCCC Block is 1/4 rate.</entry>
 981         </row><row>
 982             <entry id="ATSCMH-SCCC-CODE-RES"><constant>ATSCMH_SCCC_CODE_RES</constant></entry>
 983             <entry>to be documented.</entry>
 984         </row>
 985         </tbody>
 986     </tgroup>
 987 </table>
 988                 </section>
 989                 <section id="DTV-ATSCMH-SCCC-CODE-MODE-B">
 990                         <title><constant>DTV_ATSCMH_SCCC_CODE_MODE_B</constant></title>
 991                         <para>Series Concatenated Convolutional Code Rate.</para>
 992                         <para>Possible values are the same as documented on
 993                             &atscmh-sccc-code-mode;.</para>
 994                 </section>
 995                 <section id="DTV-ATSCMH-SCCC-CODE-MODE-C">
 996                         <title><constant>DTV_ATSCMH_SCCC_CODE_MODE_C</constant></title>
 997                         <para>Series Concatenated Convolutional Code Rate.</para>
 998                         <para>Possible values are the same as documented on
 999                             &atscmh-sccc-code-mode;.</para>
1000                 </section>
1001                 <section id="DTV-ATSCMH-SCCC-CODE-MODE-D">
1002                         <title><constant>DTV_ATSCMH_SCCC_CODE_MODE_D</constant></title>
1003                         <para>Series Concatenated Convolutional Code Rate.</para>
1004                         <para>Possible values are the same as documented on
1005                             &atscmh-sccc-code-mode;.</para>
1006                 </section>
1007         </section>
1008         <section id="DTV-API-VERSION">
1009         <title><constant>DTV_API_VERSION</constant></title>
1010         <para>Returns the major/minor version of the DVB API</para>
1011         </section>
1012         <section id="DTV-CODE-RATE-HP">
1013         <title><constant>DTV_CODE_RATE_HP</constant></title>
1014         <para>Used on terrestrial transmissions.  The acceptable values are
1015             the ones described at &fe-transmit-mode-t;.
1016         </para>
1017         </section>
1018         <section id="DTV-CODE-RATE-LP">
1019         <title><constant>DTV_CODE_RATE_LP</constant></title>
1020         <para>Used on terrestrial transmissions. The acceptable values are
1021             the ones described at &fe-transmit-mode-t;.
1022         </para>
1023
1024         </section>
1025
1026         <section id="DTV-GUARD-INTERVAL">
1027                 <title><constant>DTV_GUARD_INTERVAL</constant></title>
1028
1029                 <para>Possible values are:</para>
1030
1031 <section id="fe-guard-interval-t">
1032 <title>Modulation guard interval</title>
1033
1034 <table pgwide="1" frame="none" id="fe-guard-interval">
1035     <title>enum fe_guard_interval</title>
1036     <tgroup cols="2">
1037         &cs-def;
1038         <thead>
1039         <row>
1040             <entry>ID</entry>
1041             <entry>Description</entry>
1042         </row>
1043         </thead>
1044         <tbody valign="top">
1045         <row>
1046             <entry id="GUARD-INTERVAL-AUTO"><constant>GUARD_INTERVAL_AUTO</constant></entry>
1047             <entry>Autodetect the guard interval</entry>
1048         </row><row>
1049             <entry id="GUARD-INTERVAL-1-128"><constant>GUARD_INTERVAL_1_128</constant></entry>
1050             <entry>Guard interval 1/128</entry>
1051         </row><row>
1052             <entry id="GUARD-INTERVAL-1-32"><constant>GUARD_INTERVAL_1_32</constant></entry>
1053             <entry>Guard interval 1/32</entry>
1054         </row><row>
1055             <entry id="GUARD-INTERVAL-1-16"><constant>GUARD_INTERVAL_1_16</constant></entry>
1056             <entry>Guard interval 1/16</entry>
1057         </row><row>
1058             <entry id="GUARD-INTERVAL-1-8"><constant>GUARD_INTERVAL_1_8</constant></entry>
1059             <entry>Guard interval 1/8</entry>
1060         </row><row>
1061             <entry id="GUARD-INTERVAL-1-4"><constant>GUARD_INTERVAL_1_4</constant></entry>
1062             <entry>Guard interval 1/4</entry>
1063         </row><row>
1064             <entry id="GUARD-INTERVAL-19-128"><constant>GUARD_INTERVAL_19_128</constant></entry>
1065             <entry>Guard interval 19/128</entry>
1066         </row><row>
1067             <entry id="GUARD-INTERVAL-19-256"><constant>GUARD_INTERVAL_19_256</constant></entry>
1068             <entry>Guard interval 19/256</entry>
1069         </row><row>
1070             <entry id="GUARD-INTERVAL-PN420"><constant>GUARD_INTERVAL_PN420</constant></entry>
1071             <entry>PN length 420 (1/4)</entry>
1072         </row><row>
1073             <entry id="GUARD-INTERVAL-PN595"><constant>GUARD_INTERVAL_PN595</constant></entry>
1074             <entry>PN length 595 (1/6)</entry>
1075         </row><row>
1076             <entry id="GUARD-INTERVAL-PN945"><constant>GUARD_INTERVAL_PN945</constant></entry>
1077             <entry>PN length 945 (1/9)</entry>
1078         </row>
1079         </tbody>
1080     </tgroup>
1081 </table>
1082
1083                 <para>Notes:</para>
1084                 <para>1) If <constant>DTV_GUARD_INTERVAL</constant> is set the <constant>GUARD_INTERVAL_AUTO</constant> the hardware will
1085                         try to find the correct guard interval (if capable) and will use TMCC to fill
1086                         in the missing parameters.</para>
1087                 <para>2) Intervals 1/128, 19/128 and 19/256 are used only for DVB-T2 at present</para>
1088                 <para>3) DTMB specifies PN420, PN595 and PN945.</para>
1089 </section>
1090         </section>
1091         <section id="DTV-TRANSMISSION-MODE">
1092                 <title><constant>DTV_TRANSMISSION_MODE</constant></title>
1093
1094                 <para>Specifies the number of carriers used by the standard.
1095                     This is used only on OFTM-based standards, e. g.
1096                     DVB-T/T2, ISDB-T, DTMB</para>
1097
1098 <section id="fe-transmit-mode-t">
1099 <title>enum fe_transmit_mode: Number of carriers per channel</title>
1100
1101 <table pgwide="1" frame="none" id="fe-transmit-mode">
1102     <title>enum fe_transmit_mode</title>
1103     <tgroup cols="2">
1104         &cs-def;
1105         <thead>
1106         <row>
1107             <entry>ID</entry>
1108             <entry>Description</entry>
1109         </row>
1110         </thead>
1111         <tbody valign="top">
1112         <row>
1113             <entry id="TRANSMISSION-MODE-AUTO"><constant>TRANSMISSION_MODE_AUTO</constant></entry>
1114             <entry>Autodetect transmission mode. The hardware will try to find
1115                 the correct FFT-size (if capable) to fill in the missing
1116                 parameters.</entry>
1117         </row><row>
1118             <entry id="TRANSMISSION-MODE-1K"><constant>TRANSMISSION_MODE_1K</constant></entry>
1119             <entry>Transmission mode 1K</entry>
1120         </row><row>
1121             <entry id="TRANSMISSION-MODE-2K"><constant>TRANSMISSION_MODE_2K</constant></entry>
1122             <entry>Transmission mode 2K</entry>
1123         </row><row>
1124             <entry id="TRANSMISSION-MODE-8K"><constant>TRANSMISSION_MODE_8K</constant></entry>
1125             <entry>Transmission mode 8K</entry>
1126         </row><row>
1127             <entry id="TRANSMISSION-MODE-4K"><constant>TRANSMISSION_MODE_4K</constant></entry>
1128             <entry>Transmission mode 4K</entry>
1129         </row><row>
1130             <entry id="TRANSMISSION-MODE-16K"><constant>TRANSMISSION_MODE_16K</constant></entry>
1131             <entry>Transmission mode 16K</entry>
1132         </row><row>
1133             <entry id="TRANSMISSION-MODE-32K"><constant>TRANSMISSION_MODE_32K</constant></entry>
1134             <entry>Transmission mode 32K</entry>
1135         </row><row>
1136             <entry id="TRANSMISSION-MODE-C1"><constant>TRANSMISSION_MODE_C1</constant></entry>
1137             <entry>Single Carrier (C=1) transmission mode (DTMB)</entry>
1138         </row><row>
1139             <entry id="TRANSMISSION-MODE-C3780"><constant>TRANSMISSION_MODE_C3780</constant></entry>
1140             <entry>Multi Carrier (C=3780) transmission mode (DTMB)</entry>
1141         </row>
1142         </tbody>
1143     </tgroup>
1144 </table>
1145
1146
1147                 <para>Notes:</para>
1148                 <para>1) ISDB-T supports three carrier/symbol-size: 8K, 4K, 2K. It is called
1149                         'mode' in the standard: Mode 1 is 2K, mode 2 is 4K, mode 3 is 8K</para>
1150
1151                 <para>2) If <constant>DTV_TRANSMISSION_MODE</constant> is set the <constant>TRANSMISSION_MODE_AUTO</constant> the
1152                         hardware will try to find the correct FFT-size (if capable) and will
1153                         use TMCC to fill in the missing parameters.</para>
1154                 <para>3) DVB-T specifies 2K and 8K as valid sizes.</para>
1155                 <para>4) DVB-T2 specifies 1K, 2K, 4K, 8K, 16K and 32K.</para>
1156                 <para>5) DTMB specifies C1 and C3780.</para>
1157 </section>
1158         </section>
1159         <section id="DTV-HIERARCHY">
1160         <title><constant>DTV_HIERARCHY</constant></title>
1161         <para>Frontend hierarchy</para>
1162
1163
1164 <section id="fe-hierarchy-t">
1165 <title>Frontend hierarchy</title>
1166
1167 <table pgwide="1" frame="none" id="fe-hierarchy">
1168     <title>enum fe_hierarchy</title>
1169     <tgroup cols="2">
1170         &cs-def;
1171         <thead>
1172         <row>
1173             <entry>ID</entry>
1174             <entry>Description</entry>
1175         </row>
1176         </thead>
1177         <tbody valign="top">
1178         <row>
1179              <entry id="HIERARCHY-NONE"><constant>HIERARCHY_NONE</constant></entry>
1180             <entry>No hierarchy</entry>
1181         </row><row>
1182              <entry id="HIERARCHY-AUTO"><constant>HIERARCHY_AUTO</constant></entry>
1183             <entry>Autodetect hierarchy (if supported)</entry>
1184         </row><row>
1185              <entry id="HIERARCHY-1"><constant>HIERARCHY_1</constant></entry>
1186             <entry>Hierarchy 1</entry>
1187         </row><row>
1188              <entry id="HIERARCHY-2"><constant>HIERARCHY_2</constant></entry>
1189             <entry>Hierarchy 2</entry>
1190         </row><row>
1191              <entry id="HIERARCHY-4"><constant>HIERARCHY_4</constant></entry>
1192             <entry>Hierarchy 4</entry>
1193         </row>
1194         </tbody>
1195     </tgroup>
1196 </table>
1197 </section>
1198
1199         </section>
1200         <section id="DTV-STREAM-ID">
1201         <title><constant>DTV_STREAM_ID</constant></title>
1202         <para>DVB-S2, DVB-T2 and ISDB-S support the transmission of several
1203               streams on a single transport stream.
1204               This property enables the DVB driver to handle substream filtering,
1205               when supported by the hardware.
1206               By default, substream filtering is disabled.
1207         </para><para>
1208               For DVB-S2 and DVB-T2, the valid substream id range is from 0 to 255.
1209         </para><para>
1210               For ISDB, the valid substream id range is from 1 to 65535.
1211         </para><para>
1212               To disable it, you should use the special macro NO_STREAM_ID_FILTER.
1213         </para><para>
1214               Note: any value outside the id range also disables filtering.
1215         </para>
1216         </section>
1217         <section id="DTV-DVBT2-PLP-ID-LEGACY">
1218                 <title><constant>DTV_DVBT2_PLP_ID_LEGACY</constant></title>
1219                 <para>Obsolete, replaced with DTV_STREAM_ID.</para>
1220         </section>
1221         <section id="DTV-ENUM-DELSYS">
1222                 <title><constant>DTV_ENUM_DELSYS</constant></title>
1223                 <para>A Multi standard frontend needs to advertise the delivery systems provided.
1224                         Applications need to enumerate the provided delivery systems, before using
1225                         any other operation with the frontend. Prior to it's introduction,
1226                         FE_GET_INFO was used to determine a frontend type. A frontend which
1227                         provides more than a single delivery system, FE_GET_INFO doesn't help much.
1228                         Applications which intends to use a multistandard frontend must enumerate
1229                         the delivery systems associated with it, rather than trying to use
1230                         FE_GET_INFO. In the case of a legacy frontend, the result is just the same
1231                         as with FE_GET_INFO, but in a more structured format </para>
1232         </section>
1233         <section id="DTV-INTERLEAVING">
1234         <title><constant>DTV_INTERLEAVING</constant></title>
1235
1236 <para>Time interleaving to be used. Currently, used only on DTMB.</para>
1237
1238 <table pgwide="1" frame="none" id="fe-interleaving">
1239     <title>enum fe_interleaving</title>
1240     <tgroup cols="2">
1241         &cs-def;
1242         <thead>
1243         <row>
1244             <entry>ID</entry>
1245             <entry>Description</entry>
1246         </row>
1247         </thead>
1248         <tbody valign="top">
1249         <row>
1250             <entry id="INTERLEAVING-NONE"><constant>INTERLEAVING_NONE</constant></entry>
1251             <entry>No interleaving.</entry>
1252         </row><row>
1253             <entry id="INTERLEAVING-AUTO"><constant>INTERLEAVING_AUTO</constant></entry>
1254             <entry>Auto-detect interleaving.</entry>
1255         </row><row>
1256             <entry id="INTERLEAVING-240"><constant>INTERLEAVING_240</constant></entry>
1257             <entry>Interleaving of 240 symbols.</entry>
1258         </row><row>
1259             <entry id="INTERLEAVING-720"><constant>INTERLEAVING_720</constant></entry>
1260             <entry>Interleaving of 720 symbols.</entry>
1261         </row>
1262         </tbody>
1263     </tgroup>
1264 </table>
1265
1266         </section>
1267         <section id="DTV-LNA">
1268         <title><constant>DTV_LNA</constant></title>
1269         <para>Low-noise amplifier.</para>
1270         <para>Hardware might offer controllable LNA which can be set manually
1271                 using that parameter. Usually LNA could be found only from
1272                 terrestrial devices if at all.</para>
1273         <para>Possible values: 0, 1, LNA_AUTO</para>
1274         <para>0, LNA off</para>
1275         <para>1, LNA on</para>
1276         <para>use the special macro LNA_AUTO to set LNA auto</para>
1277         </section>
1278 </section>
1279
1280         <section id="frontend-stat-properties">
1281         <title>Frontend statistics indicators</title>
1282         <para>The values are returned via <constant>dtv_property.stat</constant>.
1283               If the property is supported, <constant>dtv_property.stat.len</constant> is bigger than zero.</para>
1284         <para>For most delivery systems, <constant>dtv_property.stat.len</constant>
1285               will be 1 if the stats is supported, and the properties will
1286               return a single value for each parameter.</para>
1287         <para>It should be noted, however, that new OFDM delivery systems
1288               like ISDB can use different modulation types for each group of
1289               carriers. On such standards, up to 3 groups of statistics can be
1290               provided, and <constant>dtv_property.stat.len</constant> is updated
1291               to reflect the "global" metrics, plus one metric per each carrier
1292               group (called "layer" on ISDB).</para>
1293         <para>So, in order to be consistent with other delivery systems, the first
1294               value at <link linkend="dtv-stats"><constant>dtv_property.stat.dtv_stats</constant></link>
1295               array refers to the global metric. The other elements of the array
1296               represent each layer, starting from layer A(index 1),
1297               layer B (index 2) and so on.</para>
1298         <para>The number of filled elements are stored at <constant>dtv_property.stat.len</constant>.</para>
1299         <para>Each element of the <constant>dtv_property.stat.dtv_stats</constant> array consists on two elements:</para>
1300         <itemizedlist mark='opencircle'>
1301                 <listitem><para><constant>svalue</constant> or <constant>uvalue</constant>, where
1302                         <constant>svalue</constant> is for signed values of the measure (dB measures)
1303                         and <constant>uvalue</constant> is for unsigned values (counters, relative scale)</para></listitem>
1304                 <listitem><para><constant>scale</constant> - Scale for the value. It can be:</para>
1305                         <itemizedlist mark='bullet' id="fecap-scale-params">
1306                                 <listitem id="FE-SCALE-NOT-AVAILABLE"><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - The parameter is supported by the frontend, but it was not possible to collect it (could be a transitory or permanent condition)</para></listitem>
1307                                 <listitem id="FE-SCALE-DECIBEL"><para><constant>FE_SCALE_DECIBEL</constant> - parameter is a signed value, measured in 1/1000 dB</para></listitem>
1308                                 <listitem id="FE-SCALE-RELATIVE"><para><constant>FE_SCALE_RELATIVE</constant> - parameter is a unsigned value, where 0 means 0% and 65535 means 100%.</para></listitem>
1309                                 <listitem id="FE-SCALE-COUNTER"><para><constant>FE_SCALE_COUNTER</constant> - parameter is a unsigned value that counts the occurrence of an event, like bit error, block error, or lapsed time.</para></listitem>
1310                         </itemizedlist>
1311                 </listitem>
1312         </itemizedlist>
1313         <section id="DTV-STAT-SIGNAL-STRENGTH">
1314                 <title><constant>DTV_STAT_SIGNAL_STRENGTH</constant></title>
1315                 <para>Indicates the signal strength level at the analog part of the tuner or of the demod.</para>
1316                 <para>Possible scales for this metric are:</para>
1317                 <itemizedlist mark='bullet'>
1318                         <listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem>
1319                         <listitem><para><constant>FE_SCALE_DECIBEL</constant> - signal strength is in 0.001 dBm units, power measured in miliwatts. This value is generally negative.</para></listitem>
1320                         <listitem><para><constant>FE_SCALE_RELATIVE</constant> - The frontend provides a 0% to 100% measurement for power (actually, 0 to 65535).</para></listitem>
1321                 </itemizedlist>
1322         </section>
1323         <section id="DTV-STAT-CNR">
1324                 <title><constant>DTV_STAT_CNR</constant></title>
1325                 <para>Indicates the Signal to Noise ratio for the main carrier.</para>
1326                 <para>Possible scales for this metric are:</para>
1327                 <itemizedlist mark='bullet'>
1328                         <listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem>
1329                         <listitem><para><constant>FE_SCALE_DECIBEL</constant> - Signal/Noise ratio is in 0.001 dB units.</para></listitem>
1330                         <listitem><para><constant>FE_SCALE_RELATIVE</constant> - The frontend provides a 0% to 100% measurement for Signal/Noise (actually, 0 to 65535).</para></listitem>
1331                 </itemizedlist>
1332         </section>
1333         <section id="DTV-STAT-PRE-ERROR-BIT-COUNT">
1334                 <title><constant>DTV_STAT_PRE_ERROR_BIT_COUNT</constant></title>
1335                 <para>Measures the number of bit errors before the forward error correction (FEC) on the inner coding block (before Viterbi, LDPC or other inner code).</para>
1336                 <para>This measure is taken during the same interval as <constant>DTV_STAT_PRE_TOTAL_BIT_COUNT</constant>.</para>
1337                 <para>In order to get the BER (Bit Error Rate) measurement, it should be divided by
1338                 <link linkend="DTV-STAT-PRE-TOTAL-BIT-COUNT"><constant>DTV_STAT_PRE_TOTAL_BIT_COUNT</constant></link>.</para>
1339                 <para>This measurement is monotonically increased, as the frontend gets more bit count measurements.
1340                       The frontend may reset it when a channel/transponder is tuned.</para>
1341                 <para>Possible scales for this metric are:</para>
1342                 <itemizedlist mark='bullet'>
1343                         <listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem>
1344                         <listitem><para><constant>FE_SCALE_COUNTER</constant> - Number of error bits counted before the inner coding.</para></listitem>
1345                 </itemizedlist>
1346         </section>
1347         <section id="DTV-STAT-PRE-TOTAL-BIT-COUNT">
1348                 <title><constant>DTV_STAT_PRE_TOTAL_BIT_COUNT</constant></title>
1349                 <para>Measures the amount of bits received before the inner code block, during the same period as
1350                 <link linkend="DTV-STAT-PRE-ERROR-BIT-COUNT"><constant>DTV_STAT_PRE_ERROR_BIT_COUNT</constant></link> measurement was taken.</para>
1351                 <para>It should be noted that this measurement can be smaller than the total amount of bits on the transport stream,
1352                       as the frontend may need to manually restart the measurement, losing some data between each measurement interval.</para>
1353                 <para>This measurement is monotonically increased, as the frontend gets more bit count measurements.
1354                       The frontend may reset it when a channel/transponder is tuned.</para>
1355                 <para>Possible scales for this metric are:</para>
1356                 <itemizedlist mark='bullet'>
1357                         <listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem>
1358                         <listitem><para><constant>FE_SCALE_COUNTER</constant> - Number of bits counted while measuring
1359                                  <link linkend="DTV-STAT-PRE-ERROR-BIT-COUNT"><constant>DTV_STAT_PRE_ERROR_BIT_COUNT</constant></link>.</para></listitem>
1360                 </itemizedlist>
1361         </section>
1362         <section id="DTV-STAT-POST-ERROR-BIT-COUNT">
1363                 <title><constant>DTV_STAT_POST_ERROR_BIT_COUNT</constant></title>
1364                 <para>Measures the number of bit errors after the forward error correction (FEC) done by inner code block (after Viterbi, LDPC or other inner code).</para>
1365                 <para>This measure is taken during the same interval as <constant>DTV_STAT_POST_TOTAL_BIT_COUNT</constant>.</para>
1366                 <para>In order to get the BER (Bit Error Rate) measurement, it should be divided by
1367                 <link linkend="DTV-STAT-POST-TOTAL-BIT-COUNT"><constant>DTV_STAT_POST_TOTAL_BIT_COUNT</constant></link>.</para>
1368                 <para>This measurement is monotonically increased, as the frontend gets more bit count measurements.
1369                       The frontend may reset it when a channel/transponder is tuned.</para>
1370                 <para>Possible scales for this metric are:</para>
1371                 <itemizedlist mark='bullet'>
1372                         <listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem>
1373                         <listitem><para><constant>FE_SCALE_COUNTER</constant> - Number of error bits counted after the inner coding.</para></listitem>
1374                 </itemizedlist>
1375         </section>
1376         <section id="DTV-STAT-POST-TOTAL-BIT-COUNT">
1377                 <title><constant>DTV_STAT_POST_TOTAL_BIT_COUNT</constant></title>
1378                 <para>Measures the amount of bits received after the inner coding, during the same period as
1379                 <link linkend="DTV-STAT-POST-ERROR-BIT-COUNT"><constant>DTV_STAT_POST_ERROR_BIT_COUNT</constant></link> measurement was taken.</para>
1380                 <para>It should be noted that this measurement can be smaller than the total amount of bits on the transport stream,
1381                       as the frontend may need to manually restart the measurement, losing some data between each measurement interval.</para>
1382                 <para>This measurement is monotonically increased, as the frontend gets more bit count measurements.
1383                       The frontend may reset it when a channel/transponder is tuned.</para>
1384                 <para>Possible scales for this metric are:</para>
1385                 <itemizedlist mark='bullet'>
1386                         <listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem>
1387                         <listitem><para><constant>FE_SCALE_COUNTER</constant> - Number of bits counted while measuring
1388                                  <link linkend="DTV-STAT-POST-ERROR-BIT-COUNT"><constant>DTV_STAT_POST_ERROR_BIT_COUNT</constant></link>.</para></listitem>
1389                 </itemizedlist>
1390         </section>
1391         <section id="DTV-STAT-ERROR-BLOCK-COUNT">
1392                 <title><constant>DTV_STAT_ERROR_BLOCK_COUNT</constant></title>
1393                 <para>Measures the number of block errors after the outer forward error correction coding (after Reed-Solomon or other outer code).</para>
1394                 <para>This measurement is monotonically increased, as the frontend gets more bit count measurements.
1395                       The frontend may reset it when a channel/transponder is tuned.</para>
1396                 <para>Possible scales for this metric are:</para>
1397                 <itemizedlist mark='bullet'>
1398                         <listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem>
1399                         <listitem><para><constant>FE_SCALE_COUNTER</constant> - Number of error blocks counted after the outer coding.</para></listitem>
1400                 </itemizedlist>
1401         </section>
1402         <section id="DTV-STAT-TOTAL-BLOCK-COUNT">
1403                 <title><constant>DTV-STAT_TOTAL_BLOCK_COUNT</constant></title>
1404                 <para>Measures the total number of blocks received during the same period as
1405                 <link linkend="DTV-STAT-ERROR-BLOCK-COUNT"><constant>DTV_STAT_ERROR_BLOCK_COUNT</constant></link> measurement was taken.</para>
1406                 <para>It can be used to calculate the PER indicator, by dividing
1407                 <link linkend="DTV-STAT-ERROR-BLOCK-COUNT"><constant>DTV_STAT_ERROR_BLOCK_COUNT</constant></link>
1408                 by <link linkend="DTV-STAT-TOTAL-BLOCK-COUNT"><constant>DTV-STAT-TOTAL-BLOCK-COUNT</constant></link>.</para>
1409                 <para>Possible scales for this metric are:</para>
1410                 <itemizedlist mark='bullet'>
1411                         <listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem>
1412                         <listitem><para><constant>FE_SCALE_COUNTER</constant> - Number of blocks counted while measuring
1413                         <link linkend="DTV-STAT-ERROR-BLOCK-COUNT"><constant>DTV_STAT_ERROR_BLOCK_COUNT</constant></link>.</para></listitem>
1414                 </itemizedlist>
1415         </section>
1416         </section>
1417
1418         <section id="frontend-property-terrestrial-systems">
1419         <title>Properties used on terrestrial delivery systems</title>
1420                 <section id="dvbt-params">
1421                         <title>DVB-T delivery system</title>
1422                         <para>The following parameters are valid for DVB-T:</para>
1423                         <itemizedlist mark='opencircle'>
1424                                 <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
1425                                 <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
1426                                 <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
1427                                 <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
1428                                 <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
1429                                 <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
1430                                 <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
1431                                 <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
1432                                 <listitem><para><link linkend="DTV-CODE-RATE-HP"><constant>DTV_CODE_RATE_HP</constant></link></para></listitem>
1433                                 <listitem><para><link linkend="DTV-CODE-RATE-LP"><constant>DTV_CODE_RATE_LP</constant></link></para></listitem>
1434                                 <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem>
1435                                 <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem>
1436                                 <listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem>
1437                                 <listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem>
1438                         </itemizedlist>
1439                         <para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para>
1440                 </section>
1441                 <section id="dvbt2-params">
1442                         <title>DVB-T2 delivery system</title>
1443                         <para>DVB-T2 support is currently in the early stages
1444                         of development, so expect that this section maygrow and become
1445                         more detailed with time.</para>
1446                 <para>The following parameters are valid for DVB-T2:</para>
1447                 <itemizedlist mark='opencircle'>
1448                         <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
1449                         <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
1450                         <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
1451                         <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
1452                         <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
1453                         <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
1454                         <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
1455                         <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
1456                         <listitem><para><link linkend="DTV-CODE-RATE-HP"><constant>DTV_CODE_RATE_HP</constant></link></para></listitem>
1457                         <listitem><para><link linkend="DTV-CODE-RATE-LP"><constant>DTV_CODE_RATE_LP</constant></link></para></listitem>
1458                         <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem>
1459                         <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem>
1460                         <listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem>
1461                         <listitem><para><link linkend="DTV-STREAM-ID"><constant>DTV_STREAM_ID</constant></link></para></listitem>
1462                         <listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem>
1463                 </itemizedlist>
1464                 <para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para>
1465                 </section>
1466                 <section id="isdbt">
1467                 <title>ISDB-T delivery system</title>
1468                 <para>This ISDB-T/ISDB-Tsb API extension should reflect all information
1469                         needed to tune any ISDB-T/ISDB-Tsb hardware. Of course it is possible
1470                         that some very sophisticated devices won't need certain parameters to
1471                         tune.</para>
1472                 <para>The information given here should help application writers to know how
1473                         to handle ISDB-T and ISDB-Tsb hardware using the Linux DVB-API.</para>
1474                 <para>The details given here about ISDB-T and ISDB-Tsb are just enough to
1475                         basically show the dependencies between the needed parameter values,
1476                         but surely some information is left out. For more detailed information
1477                         see the following documents:</para>
1478                 <para>ARIB STD-B31 - "Transmission System for Digital Terrestrial
1479                         Television Broadcasting" and</para>
1480                 <para>ARIB TR-B14 - "Operational Guidelines for Digital Terrestrial
1481                         Television Broadcasting".</para>
1482                 <para>In order to understand the ISDB specific parameters,
1483                         one has to have some knowledge the channel structure in
1484                         ISDB-T and ISDB-Tsb. I.e. it has to be known to
1485                         the reader that an ISDB-T channel consists of 13 segments,
1486                         that it can have up to 3 layer sharing those segments,
1487                         and things like that.</para>
1488                 <para>The following parameters are valid for ISDB-T:</para>
1489                 <itemizedlist mark='opencircle'>
1490                         <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
1491                         <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
1492                         <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
1493                         <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
1494                         <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
1495                         <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
1496                         <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
1497                         <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem>
1498                         <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem>
1499                         <listitem><para><link linkend="DTV-ISDBT-LAYER-ENABLED"><constant>DTV_ISDBT_LAYER_ENABLED</constant></link></para></listitem>
1500                         <listitem><para><link linkend="DTV-ISDBT-PARTIAL-RECEPTION"><constant>DTV_ISDBT_PARTIAL_RECEPTION</constant></link></para></listitem>
1501                         <listitem><para><link linkend="DTV-ISDBT-SOUND-BROADCASTING"><constant>DTV_ISDBT_SOUND_BROADCASTING</constant></link></para></listitem>
1502                         <listitem><para><link linkend="DTV-ISDBT-SB-SUBCHANNEL-ID"><constant>DTV_ISDBT_SB_SUBCHANNEL_ID</constant></link></para></listitem>
1503                         <listitem><para><link linkend="DTV-ISDBT-SB-SEGMENT-IDX"><constant>DTV_ISDBT_SB_SEGMENT_IDX</constant></link></para></listitem>
1504                         <listitem><para><link linkend="DTV-ISDBT-SB-SEGMENT-COUNT"><constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant></link></para></listitem>
1505                         <listitem><para><link linkend="DTV-ISDBT-LAYER-FEC"><constant>DTV_ISDBT_LAYERA_FEC</constant></link></para></listitem>
1506                         <listitem><para><link linkend="DTV-ISDBT-LAYER-MODULATION"><constant>DTV_ISDBT_LAYERA_MODULATION</constant></link></para></listitem>
1507                         <listitem><para><link linkend="DTV-ISDBT-LAYER-SEGMENT-COUNT"><constant>DTV_ISDBT_LAYERA_SEGMENT_COUNT</constant></link></para></listitem>
1508                         <listitem><para><link linkend="DTV-ISDBT-LAYER-TIME-INTERLEAVING"><constant>DTV_ISDBT_LAYERA_TIME_INTERLEAVING</constant></link></para></listitem>
1509                         <listitem><para><link linkend="DTV-ISDBT-LAYER-FEC"><constant>DTV_ISDBT_LAYERB_FEC</constant></link></para></listitem>
1510                         <listitem><para><link linkend="DTV-ISDBT-LAYER-MODULATION"><constant>DTV_ISDBT_LAYERB_MODULATION</constant></link></para></listitem>
1511                         <listitem><para><link linkend="DTV-ISDBT-LAYER-SEGMENT-COUNT"><constant>DTV_ISDBT_LAYERB_SEGMENT_COUNT</constant></link></para></listitem>
1512                         <listitem><para><link linkend="DTV-ISDBT-LAYER-TIME-INTERLEAVING"><constant>DTV_ISDBT_LAYERB_TIME_INTERLEAVING</constant></link></para></listitem>
1513                         <listitem><para><link linkend="DTV-ISDBT-LAYER-FEC"><constant>DTV_ISDBT_LAYERC_FEC</constant></link></para></listitem>
1514                         <listitem><para><link linkend="DTV-ISDBT-LAYER-MODULATION"><constant>DTV_ISDBT_LAYERC_MODULATION</constant></link></para></listitem>
1515                         <listitem><para><link linkend="DTV-ISDBT-LAYER-SEGMENT-COUNT"><constant>DTV_ISDBT_LAYERC_SEGMENT_COUNT</constant></link></para></listitem>
1516                         <listitem><para><link linkend="DTV-ISDBT-LAYER-TIME-INTERLEAVING"><constant>DTV_ISDBT_LAYERC_TIME_INTERLEAVING</constant></link></para></listitem>
1517                 </itemizedlist>
1518                 <para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para>
1519                 </section>
1520                 <section id="atsc-params">
1521                         <title>ATSC delivery system</title>
1522                         <para>The following parameters are valid for ATSC:</para>
1523                         <itemizedlist mark='opencircle'>
1524                                 <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
1525                                 <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
1526                                 <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
1527                                 <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
1528                                 <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
1529                                 <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
1530                                 <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
1531                         </itemizedlist>
1532                         <para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para>
1533                 </section>
1534                 <section id="atscmh-params">
1535                         <title>ATSC-MH delivery system</title>
1536                         <para>The following parameters are valid for ATSC-MH:</para>
1537                         <itemizedlist mark='opencircle'>
1538                                 <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
1539                                 <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
1540                                 <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
1541                                 <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
1542                                 <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
1543                                 <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
1544                                 <listitem><para><link linkend="DTV-ATSCMH-FIC-VER"><constant>DTV_ATSCMH_FIC_VER</constant></link></para></listitem>
1545                                 <listitem><para><link linkend="DTV-ATSCMH-PARADE-ID"><constant>DTV_ATSCMH_PARADE_ID</constant></link></para></listitem>
1546                                 <listitem><para><link linkend="DTV-ATSCMH-NOG"><constant>DTV_ATSCMH_NOG</constant></link></para></listitem>
1547                                 <listitem><para><link linkend="DTV-ATSCMH-TNOG"><constant>DTV_ATSCMH_TNOG</constant></link></para></listitem>
1548                                 <listitem><para><link linkend="DTV-ATSCMH-SGN"><constant>DTV_ATSCMH_SGN</constant></link></para></listitem>
1549                                 <listitem><para><link linkend="DTV-ATSCMH-PRC"><constant>DTV_ATSCMH_PRC</constant></link></para></listitem>
1550                                 <listitem><para><link linkend="DTV-ATSCMH-RS-FRAME-MODE"><constant>DTV_ATSCMH_RS_FRAME_MODE</constant></link></para></listitem>
1551                                 <listitem><para><link linkend="DTV-ATSCMH-RS-FRAME-ENSEMBLE"><constant>DTV_ATSCMH_RS_FRAME_ENSEMBLE</constant></link></para></listitem>
1552                                 <listitem><para><link linkend="DTV-ATSCMH-RS-CODE-MODE-PRI"><constant>DTV_ATSCMH_RS_CODE_MODE_PRI</constant></link></para></listitem>
1553                                 <listitem><para><link linkend="DTV-ATSCMH-RS-CODE-MODE-SEC"><constant>DTV_ATSCMH_RS_CODE_MODE_SEC</constant></link></para></listitem>
1554                                 <listitem><para><link linkend="DTV-ATSCMH-SCCC-BLOCK-MODE"><constant>DTV_ATSCMH_SCCC_BLOCK_MODE</constant></link></para></listitem>
1555                                 <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE-MODE-A"><constant>DTV_ATSCMH_SCCC_CODE_MODE_A</constant></link></para></listitem>
1556                                 <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE-MODE-B"><constant>DTV_ATSCMH_SCCC_CODE_MODE_B</constant></link></para></listitem>
1557                                 <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE-MODE-C"><constant>DTV_ATSCMH_SCCC_CODE_MODE_C</constant></link></para></listitem>
1558                                 <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE-MODE-D"><constant>DTV_ATSCMH_SCCC_CODE_MODE_D</constant></link></para></listitem>
1559                         </itemizedlist>
1560                         <para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para>
1561                 </section>
1562                 <section id="dtmb-params">
1563                         <title>DTMB delivery system</title>
1564                         <para>The following parameters are valid for DTMB:</para>
1565                         <itemizedlist mark='opencircle'>
1566                                 <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
1567                                 <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
1568                                 <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
1569                                 <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
1570                                 <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
1571                                 <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
1572                                 <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
1573                                 <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
1574                                 <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem>
1575                                 <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem>
1576                                 <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem>
1577                                 <listitem><para><link linkend="DTV-INTERLEAVING"><constant>DTV_INTERLEAVING</constant></link></para></listitem>
1578                                 <listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem>
1579                         </itemizedlist>
1580                         <para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para>
1581                 </section>
1582         </section>
1583         <section id="frontend-property-cable-systems">
1584         <title>Properties used on cable delivery systems</title>
1585         <section id="dvbc-params">
1586                 <title>DVB-C delivery system</title>
1587                 <para>The DVB-C Annex-A is the widely used cable standard. Transmission uses QAM modulation.</para>
1588                 <para>The DVB-C Annex-C is optimized for 6MHz, and is used in Japan. It supports a subset of the Annex A modulation types, and a roll-off of 0.13, instead of 0.15</para>
1589                 <para>The following parameters are valid for DVB-C Annex A/C:</para>
1590                 <itemizedlist mark='opencircle'>
1591                         <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
1592                         <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
1593                         <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
1594                         <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
1595                         <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
1596                         <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
1597                         <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
1598                         <listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem>
1599                         <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem>
1600                         <listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem>
1601                 </itemizedlist>
1602                 <para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para>
1603         </section>
1604         <section id="dvbc-annex-b-params">
1605                 <title>DVB-C Annex B delivery system</title>
1606                 <para>The DVB-C Annex-B is only used on a few Countries like the United States.</para>
1607                 <para>The following parameters are valid for DVB-C Annex B:</para>
1608                 <itemizedlist mark='opencircle'>
1609                         <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
1610                         <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
1611                         <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
1612                         <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
1613                         <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
1614                         <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
1615                         <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
1616                         <listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem>
1617                 </itemizedlist>
1618                 <para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para>
1619         </section>
1620         </section>
1621         <section id="frontend-property-satellite-systems">
1622         <title>Properties used on satellite delivery systems</title>
1623         <section id="dvbs-params">
1624                 <title>DVB-S delivery system</title>
1625                 <para>The following parameters are valid for DVB-S:</para>
1626                 <itemizedlist mark='opencircle'>
1627                         <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
1628                         <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
1629                         <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
1630                         <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
1631                         <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
1632                         <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
1633                         <listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem>
1634                         <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem>
1635                         <listitem><para><link linkend="DTV-VOLTAGE"><constant>DTV_VOLTAGE</constant></link></para></listitem>
1636                         <listitem><para><link linkend="DTV-TONE"><constant>DTV_TONE</constant></link></para></listitem>
1637                 </itemizedlist>
1638                 <para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para>
1639                 <para>Future implementations might add those two missing parameters:</para>
1640                 <itemizedlist mark='opencircle'>
1641                         <listitem><para><link linkend="DTV-DISEQC-MASTER"><constant>DTV_DISEQC_MASTER</constant></link></para></listitem>
1642                         <listitem><para><link linkend="DTV-DISEQC-SLAVE-REPLY"><constant>DTV_DISEQC_SLAVE_REPLY</constant></link></para></listitem>
1643                 </itemizedlist>
1644         </section>
1645         <section id="dvbs2-params">
1646                 <title>DVB-S2 delivery system</title>
1647                 <para>In addition to all parameters valid for DVB-S, DVB-S2 supports the following parameters:</para>
1648                 <itemizedlist mark='opencircle'>
1649                         <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
1650                         <listitem><para><link linkend="DTV-PILOT"><constant>DTV_PILOT</constant></link></para></listitem>
1651                         <listitem><para><link linkend="DTV-ROLLOFF"><constant>DTV_ROLLOFF</constant></link></para></listitem>
1652                         <listitem><para><link linkend="DTV-STREAM-ID"><constant>DTV_STREAM_ID</constant></link></para></listitem>
1653                 </itemizedlist>
1654                 <para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para>
1655         </section>
1656         <section id="turbo-params">
1657                 <title>Turbo code delivery system</title>
1658                 <para>In addition to all parameters valid for DVB-S, turbo code supports the following parameters:</para>
1659                 <itemizedlist mark='opencircle'>
1660                         <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
1661                 </itemizedlist>
1662         </section>
1663         <section id="isdbs-params">
1664                 <title>ISDB-S delivery system</title>
1665                 <para>The following parameters are valid for ISDB-S:</para>
1666                 <itemizedlist mark='opencircle'>
1667                         <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
1668                         <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
1669                         <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
1670                         <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
1671                         <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
1672                         <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
1673                         <listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem>
1674                         <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem>
1675                         <listitem><para><link linkend="DTV-VOLTAGE"><constant>DTV_VOLTAGE</constant></link></para></listitem>
1676                         <listitem><para><link linkend="DTV-STREAM-ID"><constant>DTV_STREAM_ID</constant></link></para></listitem>
1677                 </itemizedlist>
1678         </section>
1679         </section>
1680 </section>