aboutsummaryrefslogtreecommitdiff
path: root/Documentation/DocBook/media/dvb/dvbproperty.xml
blob: a9b15e34c5b20a8e4500fa061833eace446763cc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
<section id="FE_GET_SET_PROPERTY">
<title><constant>FE_GET_PROPERTY/FE_SET_PROPERTY</constant></title>
<para>This section describes the DVB version 5 extension of the DVB-API, also
called "S2API", as this API were added to provide support for DVB-S2. It was
designed to be able to replace the old frontend API. Yet, the DISEQC and
the capability ioctls weren't implemented yet via the new way.</para>
<para>The typical usage for the <constant>FE_GET_PROPERTY/FE_SET_PROPERTY</constant>
API is to replace the ioctl's were the <link linkend="dvb-frontend-parameters">
struct <constant>dvb_frontend_parameters</constant></link> were used.</para>
<section id="dtv-stats">
<title>DTV stats type</title>
<programlisting>
struct dtv_stats {
	__u8 scale;	/* enum fecap_scale_params type */
	union {
		__u64 uvalue;	/* for counters and relative scales */
		__s64 svalue;	/* for 1/1000 dB measures */
	};
} __packed;
</programlisting>
</section>
<section id="dtv-fe-stats">
<title>DTV stats type</title>
<programlisting>
#define MAX_DTV_STATS   4

struct dtv_fe_stats {
	__u8 len;
	struct dtv_stats stat[MAX_DTV_STATS];
} __packed;
</programlisting>
</section>

<section id="dtv-property">
<title>DTV property type</title>
<programlisting>
/* Reserved fields should be set to 0 */

struct dtv_property {
	__u32 cmd;
	__u32 reserved[3];
	union {
		__u32 data;
		struct dtv_fe_stats st;
		struct {
			__u8 data[32];
			__u32 len;
			__u32 reserved1[3];
			void *reserved2;
		} buffer;
	} u;
	int result;
} __attribute__ ((packed));

/* num of properties cannot exceed DTV_IOCTL_MAX_MSGS per ioctl */
#define DTV_IOCTL_MAX_MSGS 64
</programlisting>
</section>
<section id="dtv-properties">
<title>DTV properties type</title>
<programlisting>
struct dtv_properties {
	__u32 num;
	struct dtv_property *props;
};
</programlisting>
</section>

<section id="FE_GET_PROPERTY">
<title>FE_GET_PROPERTY</title>
<para>DESCRIPTION
</para>
<informaltable><tgroup cols="1"><tbody><row><entry
 align="char">
<para>This ioctl call returns one or more frontend properties. This call only
 requires read-only access to the device.</para>
</entry>
 </row></tbody></tgroup></informaltable>
<para>SYNOPSIS
</para>
<informaltable><tgroup cols="1"><tbody><row><entry
 align="char">
<para>int ioctl(int fd, int request = <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY</link>,
 dtv_properties &#x22C6;props);</para>
</entry>
 </row></tbody></tgroup></informaltable>
<para>PARAMETERS
</para>
<informaltable><tgroup cols="2"><tbody><row><entry align="char">
<para>int fd</para>
</entry><entry
 align="char">
<para>File descriptor returned by a previous call to open().</para>
</entry>
 </row><row><entry
 align="char">
<para>int num</para>
</entry><entry
 align="char">
<para>Equals <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY</link> for this command.</para>
</entry>
 </row><row><entry
 align="char">
<para>struct dtv_property *props</para>
</entry><entry
 align="char">
<para>Points to the location where the front-end property commands are stored.</para>
</entry>
 </row></tbody></tgroup></informaltable>
&return-value-dvb;
<informaltable><tgroup cols="2"><tbody><row>
  <entry align="char"><para>EOPNOTSUPP</para></entry>
  <entry align="char"><para>Property type not supported.</para></entry>
 </row></tbody></tgroup></informaltable>
</section>

<section id="FE_SET_PROPERTY">
<title>FE_SET_PROPERTY</title>
<para>DESCRIPTION
</para>
<informaltable><tgroup cols="1"><tbody><row><entry
 align="char">
<para>This ioctl call sets one or more frontend properties. This call only
 requires read-only access to the device.</para>
</entry>
 </row></tbody></tgroup></informaltable>
<para>SYNOPSIS
</para>
<informaltable><tgroup cols="1"><tbody><row><entry
 align="char">
<para>int ioctl(int fd, int request = <link linkend="FE_SET_PROPERTY">FE_SET_PROPERTY</link>,
 dtv_properties &#x22C6;props);</para>
</entry>
 </row></tbody></tgroup></informaltable>
<para>PARAMETERS
</para>
<informaltable><tgroup cols="2"><tbody><row><entry align="char">
<para>int fd</para>
</entry><entry
 align="char">
<para>File descriptor returned by a previous call to open().</para>
</entry>
 </row><row><entry
 align="char">
<para>int num</para>
</entry><entry
 align="char">
<para>Equals <link linkend="FE_SET_PROPERTY">FE_SET_PROPERTY</link> for this command.</para>
</entry>
 </row><row><entry
 align="char">
<para>struct dtv_property *props</para>
</entry><entry
 align="char">
<para>Points to the location where the front-end property commands are stored.</para>
</entry>
 </row></tbody></tgroup></informaltable>
&return-value-dvb;
<informaltable><tgroup cols="2"><tbody><row>
  <entry align="char"><para>EOPNOTSUPP</para></entry>
  <entry align="char"><para>Property type not supported.</para></entry>
 </row></tbody></tgroup></informaltable>
</section>

<section>
	<title>Property types</title>
<para>
On <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY</link>/<link linkend="FE_SET_PROPERTY">FE_SET_PROPERTY</link>,
the actual action is determined by the dtv_property cmd/data pairs. With one single ioctl, is possible to
get/set up to 64 properties. The actual meaning of each property is described on the next sections.
</para>

<para>The available frontend property types are shown on the next section.</para>
</section>

<section id="fe_property_parameters">
	<title>Digital TV property parameters</title>
	<section id="DTV-UNDEFINED">
	<title><constant>DTV_UNDEFINED</constant></title>
	<para>Used internally. A GET/SET operation for it won't change or return anything.</para>
	</section>
	<section id="DTV-TUNE">
	<title><constant>DTV_TUNE</constant></title>
	<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>
	</section>
	<section id="DTV-CLEAR">
	<title><constant>DTV_CLEAR</constant></title>
	<para>Reset a cache of data specific to the frontend here. This does not effect hardware.</para>
	</section>
	<section id="DTV-FREQUENCY">
		<title><constant>DTV_FREQUENCY</constant></title>

		<para>Central frequency of the channel.</para>

		<para>Notes:</para>
		<para>1)For satellital delivery systems, it is measured in kHz.
			For the other ones, it is measured in Hz.</para>
		<para>2)For ISDB-T, the channels are usually transmitted with an offset of 143kHz.
			E.g. a valid frequncy could be 474143 kHz. The stepping is bound to the bandwidth of
			the channel which is 6MHz.</para>

		<para>3)As in ISDB-Tsb the channel consists of only one or three segments the
			frequency step is 429kHz, 3*429 respectively. As for ISDB-T the
			central frequency of the channel is expected.</para>
	</section>
	<section id="DTV-MODULATION">
	<title><constant>DTV_MODULATION</constant></title>
<para>Specifies the frontend modulation type for cable and satellite types. The modulation can be one of the types bellow:</para>
<programlisting>
 typedef enum fe_modulation {
	QPSK,
	QAM_16,
	QAM_32,
	QAM_64,
	QAM_128,
	QAM_256,
	QAM_AUTO,
	VSB_8,
	VSB_16,
	PSK_8,
	APSK_16,
	APSK_32,
	DQPSK,
	QAM_4_NR,
 } fe_modulation_t;
</programlisting>
	</section>
	<section id="DTV-BANDWIDTH-HZ">
		<title><constant>DTV_BANDWIDTH_HZ</constant></title>

		<para>Bandwidth for the channel, in HZ.</para>

		<para>Possible values:
			<constant>1712000</constant>,
			<constant>5000000</constant>,
			<constant>6000000</constant>,
			<constant>7000000</constant>,
			<constant>8000000</constant>,
			<constant>10000000</constant>.
		</para>

		<para>Notes:</para>

		<para>1) For ISDB-T it should be always 6000000Hz (6MHz)</para>
		<para>2) For ISDB-Tsb it can vary depending on the number of connected segments</para>
		<para>3) Bandwidth doesn't apply for DVB-C transmissions, as the bandwidth
			 for DVB-C depends on the symbol rate</para>
		<para>4) Bandwidth in ISDB-T is fixed (6MHz) or can be easily derived from
			other parameters (DTV_ISDBT_SB_SEGMENT_IDX,
			DTV_ISDBT_SB_SEGMENT_COUNT).</para>
		<para>5) DVB-T supports 6, 7 and 8MHz.</para>
		<para>6) In addition, DVB-T2 supports 1.172, 5 and 10MHz.</para>
	</section>
	<section id="DTV-INVERSION">
	<title><constant>DTV_INVERSION</constant></title>
	<para>The Inversion field can take one of these values:
	</para>
	<programlisting>
	typedef enum fe_spectral_inversion {
		INVERSION_OFF,
		INVERSION_ON,
		INVERSION_AUTO
	} fe_spectral_inversion_t;
	</programlisting>
	<para>It indicates if spectral inversion should be presumed or not. In the automatic setting
	(<constant>INVERSION_AUTO</constant>) the hardware will try to figure out the correct setting by
	itself.
	</para>
	</section>
	<section id="DTV-DISEQC-MASTER">
	<title><constant>DTV_DISEQC_MASTER</constant></title>
	<para>Currently not implemented.</para>
	</section>
	<section id="DTV-SYMBOL-RATE">
	<title><constant>DTV_SYMBOL_RATE</constant></title>
	<para>Digital TV symbol rate, in bauds (symbols/second). Used on cable standards.</para>
	</section>
	<section id="DTV-INNER-FEC">
	<title><constant>DTV_INNER_FEC</constant></title>
	<para>Used cable/satellite transmissions. The acceptable values are:
	</para>
	<programlisting>
typedef enum fe_code_rate {
	FEC_NONE = 0,
	FEC_1_2,
	FEC_2_3,
	FEC_3_4,
	FEC_4_5,
	FEC_5_6,
	FEC_6_7,
	FEC_7_8,
	FEC_8_9,
	FEC_AUTO,
	FEC_3_5,
	FEC_9_10,
	FEC_2_5,
} fe_code_rate_t;
	</programlisting>
	<para>which correspond to error correction rates of 1/2, 2/3, etc.,
	no error correction or auto detection.</para>
	</section>
	<section id="DTV-VOLTAGE">
	<title><constant>DTV_VOLTAGE</constant></title>
	<para>The voltage is usually used with non-DiSEqC capable LNBs to switch
	the polarzation (horizontal/vertical). When using DiSEqC epuipment this
	voltage has to be switched consistently to the DiSEqC commands as
	described in the DiSEqC spec.</para>
	<programlisting>
		typedef enum fe_sec_voltage {
		SEC_VOLTAGE_13,
		SEC_VOLTAGE_18
		} fe_sec_voltage_t;
	</programlisting>
	</section>
	<section id="DTV-TONE">
	<title><constant>DTV_TONE</constant></title>
	<para>Currently not used.</para>
	</section>
	<section id="DTV-PILOT">
	<title><constant>DTV_PILOT</constant></title>
	<para>Sets DVB-S2 pilot</para>
	<section id="fe-pilot-t">
		<title>fe_pilot type</title>
		<programlisting>
typedef enum fe_pilot {
	PILOT_ON,
	PILOT_OFF,
	PILOT_AUTO,
} fe_pilot_t;
		</programlisting>
		</section>
	</section>
	<section id="DTV-ROLLOFF">
	<title><constant>DTV_ROLLOFF</constant></title>
		<para>Sets DVB-S2 rolloff</para>

	<section id="fe-rolloff-t">
		<title>fe_rolloff type</title>
		<programlisting>
typedef enum fe_rolloff {
	ROLLOFF_35, /* Implied value in DVB-S, default for DVB-S2 */
	ROLLOFF_20,
	ROLLOFF_25,
	ROLLOFF_AUTO,
} fe_rolloff_t;
		</programlisting>
		</section>
	</section>
	<section id="DTV-DISEQC-SLAVE-REPLY">
	<title><constant>DTV_DISEQC_SLAVE_REPLY</constant></title>
	<para>Currently not implemented.</para>
	</section>
	<section id="DTV-FE-CAPABILITY-COUNT">
	<title><constant>DTV_FE_CAPABILITY_COUNT</constant></title>
	<para>Currently not implemented.</para>
	</section>
	<section id="DTV-FE-CAPABILITY">
	<title><constant>DTV_FE_CAPABILITY</constant></title>
	<para>Currently not implemented.</para>
	</section>
	<section id="DTV-DELIVERY-SYSTEM">
		<title><constant>DTV_DELIVERY_SYSTEM</constant></title>
		<para>Specifies the type of Delivery system</para>
		<section id="fe-delivery-system-t">
		<title>fe_delivery_system type</title>
		<para>Possible values: </para>
<programlisting>

typedef enum fe_delivery_system {
	SYS_UNDEFINED,
	SYS_DVBC_ANNEX_A,
	SYS_DVBC_ANNEX_B,
	SYS_DVBT,
	SYS_DSS,
	SYS_DVBS,
	SYS_DVBS2,
	SYS_DVBH,
	SYS_ISDBT,
	SYS_ISDBS,
	SYS_ISDBC,
	SYS_ATSC,
	SYS_ATSCMH,
	SYS_DTMB,
	SYS_CMMB,
	SYS_DAB,
	SYS_DVBT2,
	SYS_TURBO,
	SYS_DVBC_ANNEX_C,
} fe_delivery_system_t;
</programlisting>
		</section>
	</section>
	<section id="DTV-ISDBT-PARTIAL-RECEPTION">
		<title><constant>DTV_ISDBT_PARTIAL_RECEPTION</constant></title>

		<para>If <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '0' this bit-field represents whether
			the channel is in partial reception mode or not.</para>

		<para>If '1' <constant>DTV_ISDBT_LAYERA_*</constant> values are assigned to the center segment and
			<constant>DTV_ISDBT_LAYERA_SEGMENT_COUNT</constant> has to be '1'.</para>

		<para>If in addition <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'
			<constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> represents whether this ISDB-Tsb channel
			is consisting of one segment and layer or three segments and two layers.</para>

		<para>Possible values: 0, 1, -1 (AUTO)</para>
	</section>
	<section id="DTV-ISDBT-SOUND-BROADCASTING">
		<title><constant>DTV_ISDBT_SOUND_BROADCASTING</constant></title>

		<para>This field represents whether the other DTV_ISDBT_*-parameters are
			referring to an ISDB-T and an ISDB-Tsb channel. (See also
			<constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>).</para>

		<para>Possible values: 0, 1, -1 (AUTO)</para>
	</section>
	<section id="DTV-ISDBT-SB-SUBCHANNEL-ID">
		<title><constant>DTV_ISDBT_SB_SUBCHANNEL_ID</constant></title>

		<para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para>

		<para>(Note of the author: This might not be the correct description of the
			<constant>SUBCHANNEL-ID</constant> in all details, but it is my understanding of the technical
			background needed to program a device)</para>

		<para>An ISDB-Tsb channel (1 or 3 segments) can be broadcasted alone or in a
			set of connected ISDB-Tsb channels. In this set of channels every
			channel can be received independently. The number of connected
			ISDB-Tsb segment can vary, e.g. depending on the frequency spectrum
			bandwidth available.</para>

		<para>Example: Assume 8 ISDB-Tsb connected segments are broadcasted. The
			broadcaster has several possibilities to put those channels in the
			air: Assuming a normal 13-segment ISDB-T spectrum he can align the 8
			segments from position 1-8 to 5-13 or anything in between.</para>

		<para>The underlying layer of segments are subchannels: each segment is
			consisting of several subchannels with a predefined IDs. A sub-channel
			is used to help the demodulator to synchronize on the channel.</para>

		<para>An ISDB-T channel is always centered over all sub-channels. As for
			the example above, in ISDB-Tsb it is no longer as simple as that.</para>

		<para><constant>The DTV_ISDBT_SB_SUBCHANNEL_ID</constant> parameter is used to give the
			sub-channel ID of the segment to be demodulated.</para>

		<para>Possible values: 0 .. 41, -1 (AUTO)</para>
	</section>
	<section id="DTV-ISDBT-SB-SEGMENT-IDX">
		<title><constant>DTV_ISDBT_SB_SEGMENT_IDX</constant></title>
		<para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para>
		<para><constant>DTV_ISDBT_SB_SEGMENT_IDX</constant> gives the index of the segment to be
			demodulated for an ISDB-Tsb channel where several of them are
			transmitted in the connected manner.</para>
		<para>Possible values: 0 .. <constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant> - 1</para>
		<para>Note: This value cannot be determined by an automatic channel search.</para>
	</section>
	<section id="DTV-ISDBT-SB-SEGMENT-COUNT">
		<title><constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant></title>
		<para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para>
		<para><constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant> gives the total count of connected ISDB-Tsb
			channels.</para>
		<para>Possible values: 1 .. 13</para>
		<para>Note: This value cannot be determined by an automatic channel search.</para>
	</section>
	<section id="isdb-hierq-layers">
		<title><constant>DTV-ISDBT-LAYER*</constant> parameters</title>
		<para>ISDB-T channels can be coded hierarchically. As opposed to DVB-T in
			ISDB-T hierarchical layers can be decoded simultaneously. For that
			reason a ISDB-T demodulator has 3 Viterbi and 3 Reed-Solomon decoders.</para>
		<para>ISDB-T has 3 hierarchical layers which each can use a part of the
			available segments. The total number of segments over all layers has
			to 13 in ISDB-T.</para>
		<para>There are 3 parameter sets, for Layers A, B and C.</para>
		<section id="DTV-ISDBT-LAYER-ENABLED">
			<title><constant>DTV_ISDBT_LAYER_ENABLED</constant></title>
			<para>Hierarchical reception in ISDB-T is achieved by enabling or disabling
				layers in the decoding process. Setting all bits of
				<constant>DTV_ISDBT_LAYER_ENABLED</constant> to '1' forces all layers (if applicable) to be
				demodulated. This is the default.</para>
			<para>If the channel is in the partial reception mode
				(<constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> = 1) the central segment can be decoded
				independently of the other 12 segments. In that mode layer A has to
				have a <constant>SEGMENT_COUNT</constant> of 1.</para>
			<para>In ISDB-Tsb only layer A is used, it can be 1 or 3 in ISDB-Tsb
				according to <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>. <constant>SEGMENT_COUNT</constant> must be filled
				accordingly.</para>
			<para>Possible values: 0x1, 0x2, 0x4 (|-able)</para>
			<para><constant>DTV_ISDBT_LAYER_ENABLED[0:0]</constant> - layer A</para>
			<para><constant>DTV_ISDBT_LAYER_ENABLED[1:1]</constant> - layer B</para>
			<para><constant>DTV_ISDBT_LAYER_ENABLED[2:2]</constant> - layer C</para>
			<para><constant>DTV_ISDBT_LAYER_ENABLED[31:3]</constant> unused</para>
		</section>
		<section id="DTV-ISDBT-LAYER-FEC">
			<title><constant>DTV_ISDBT_LAYER*_FEC</constant></title>
			<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>
		</section>
		<section id="DTV-ISDBT-LAYER-MODULATION">
			<title><constant>DTV_ISDBT_LAYER*_MODULATION</constant></title>
			<para>Possible values: <constant>QAM_AUTO</constant>, QP<constant>SK, QAM_16</constant>, <constant>QAM_64</constant>, <constant>DQPSK</constant></para>
			<para>Note: If layer C is <constant>DQPSK</constant> layer B has to be <constant>DQPSK</constant>. If layer B is <constant>DQPSK</constant>
				and <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>=0 layer has to be <constant>DQPSK</constant>.</para>
		</section>
		<section id="DTV-ISDBT-LAYER-SEGMENT-COUNT">
			<title><constant>DTV_ISDBT_LAYER*_SEGMENT_COUNT</constant></title>
			<para>Possible values: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, -1 (AUTO)</para>
			<para>Note: Truth table for <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> and
				<constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> and <constant>LAYER</constant>*_SEGMENT_COUNT</para>
			<informaltable id="isdbt-layer_seg-cnt-table">
				<tgroup cols="6">
					<tbody>
						<row>
							<entry>PR</entry>
							<entry>SB</entry>
							<entry>Layer A width</entry>
							<entry>Layer B width</entry>
							<entry>Layer C width</entry>
							<entry>total width</entry>
						</row>
						<row>
							<entry>0</entry>
							<entry>0</entry>
							<entry>1 .. 13</entry>
							<entry>1 .. 13</entry>
							<entry>1 .. 13</entry>
							<entry>13</entry>
						</row>
						<row>
							<entry>1</entry>
							<entry>0</entry>
							<entry>1</entry>
							<entry>1 .. 13</entry>
							<entry>1 .. 13</entry>
							<entry>13</entry>
						</row>
						<row>
							<entry>0</entry>
							<entry>1</entry>
							<entry>1</entry>
							<entry>0</entry>
							<entry>0</entry>
							<entry>1</entry>
						</row>
						<row>
							<entry>1</entry>
							<entry>1</entry>
							<entry>1</entry>
							<entry>2</entry>
							<entry>0</entry>
							<entry>13</entry>
						</row>
					</tbody>
				</tgroup>
			</informaltable>
		</section>
		<section id="DTV-ISDBT-LAYER-TIME-INTERLEAVING">
			<title><constant>DTV_ISDBT_LAYER*_TIME_INTERLEAVING</constant></title>
			<para>Possible values: 0, 1, 2, 3, -1 (AUTO)</para>
			<para>Note: The real inter-leaver depth-names depend on the mode (fft-size); the values
				here are referring to what can be found in the TMCC-structure -
				independent of the mode.</para>
		</section>
		<section id="DTV-ATSCMH-FIC-VER">
			<title><constant>DTV_ATSCMH_FIC_VER</constant></title>
			<para>Version number of the FIC (Fast Information Channel) signaling data.</para>
			<para>FIC is used for relaying information to allow rapid service acquisition by the receiver.</para>
			<para>Possible values: 0, 1, 2, 3, ..., 30, 31</para>
		</section>
		<section id="DTV-ATSCMH-PARADE-ID">
			<title><constant>DTV_ATSCMH_PARADE_ID</constant></title>
			<para>Parade identification number</para>
			<para>A parade is a collection of up to eight MH groups, conveying one or two ensembles.</para>
			<para>Possible values: 0, 1, 2, 3, ..., 126, 127</para>
		</section>
		<section id="DTV-ATSCMH-NOG">
			<title><constant>DTV_ATSCMH_NOG</constant></title>
			<para>Number of MH groups per MH subframe for a designated parade.</para>
			<para>Possible values: 1, 2, 3, 4, 5, 6, 7, 8</para>
		</section>
		<section id="DTV-ATSCMH-TNOG">
			<title><constant>DTV_ATSCMH_TNOG</constant></title>
			<para>Total number of MH groups including all MH groups belonging to all MH parades in one MH subframe.</para>
			<para>Possible values: 0, 1, 2, 3, ..., 30, 31</para>
		</section>
		<section id="DTV-ATSCMH-SGN">
			<title><constant>DTV_ATSCMH_SGN</constant></title>
			<para>Start group number.</para>
			<para>Possible values: 0, 1, 2, 3, ..., 14, 15</para>
		</section>
		<section id="DTV-ATSCMH-PRC">
			<title><constant>DTV_ATSCMH_PRC</constant></title>
			<para>Parade repetition cycle.</para>
			<para>Possible values: 1, 2, 3, 4, 5, 6, 7, 8</para>
		</section>
		<section id="DTV-ATSCMH-RS-FRAME-MODE">
			<title><constant>DTV_ATSCMH_RS_FRAME_MODE</constant></title>
			<para>RS frame mode.</para>
			<para>Possible values are:</para>
		  <para id="atscmh-rs-frame-mode">
<programlisting>
typedef enum atscmh_rs_frame_mode {
	ATSCMH_RSFRAME_PRI_ONLY  = 0,
	ATSCMH_RSFRAME_PRI_SEC   = 1,
} atscmh_rs_frame_mode_t;
</programlisting>
		  </para>
		</section>
		<section id="DTV-ATSCMH-RS-FRAME-ENSEMBLE">
			<title><constant>DTV_ATSCMH_RS_FRAME_ENSEMBLE</constant></title>
			<para>RS frame ensemble.</para>
			<para>Possible values are:</para>
		  <para id="atscmh-rs-frame-ensemble">
<programlisting>
typedef enum atscmh_rs_frame_ensemble {
	ATSCMH_RSFRAME_ENS_PRI   = 0,
	ATSCMH_RSFRAME_ENS_SEC   = 1,
} atscmh_rs_frame_ensemble_t;
</programlisting>
		  </para>
		</section>
		<section id="DTV-ATSCMH-RS-CODE-MODE-PRI">
			<title><constant>DTV_ATSCMH_RS_CODE_MODE_PRI</constant></title>
			<para>RS code mode (primary).</para>
			<para>Possible values are:</para>
		  <para id="atscmh-rs-code-mode">
<programlisting>
typedef enum atscmh_rs_code_mode {
	ATSCMH_RSCODE_211_187    = 0,
	ATSCMH_RSCODE_223_187    = 1,
	ATSCMH_RSCODE_235_187    = 2,
} atscmh_rs_code_mode_t;
</programlisting>
		  </para>
		</section>
		<section id="DTV-ATSCMH-RS-CODE-MODE-SEC">
			<title><constant>DTV_ATSCMH_RS_CODE_MODE_SEC</constant></title>
			<para>RS code mode (secondary).</para>
			<para>Possible values are:</para>
<programlisting>
typedef enum atscmh_rs_code_mode {
	ATSCMH_RSCODE_211_187    = 0,
	ATSCMH_RSCODE_223_187    = 1,
	ATSCMH_RSCODE_235_187    = 2,
} atscmh_rs_code_mode_t;
</programlisting>
		</section>
		<section id="DTV-ATSCMH-SCCC-BLOCK-MODE">
			<title><constant>DTV_ATSCMH_SCCC_BLOCK_MODE</constant></title>
			<para>Series Concatenated Convolutional Code Block Mode.</para>
			<para>Possible values are:</para>
		  <para id="atscmh-sccc-block-mode">
<programlisting>
typedef enum atscmh_sccc_block_mode {
	ATSCMH_SCCC_BLK_SEP      = 0,
	ATSCMH_SCCC_BLK_COMB     = 1,
} atscmh_sccc_block_mode_t;
</programlisting>
		  </para>
		</section>
		<section id="DTV-ATSCMH-SCCC-CODE-MODE-A">
			<title><constant>DTV_ATSCMH_SCCC_CODE_MODE_A</constant></title>
			<para>Series Concatenated Convolutional Code Rate.</para>
			<para>Possible values are:</para>
		  <para id="atscmh-sccc-code-mode">
<programlisting>
typedef enum atscmh_sccc_code_mode {
	ATSCMH_SCCC_CODE_HLF     = 0,
	ATSCMH_SCCC_CODE_QTR     = 1,
} atscmh_sccc_code_mode_t;
</programlisting>
		  </para>
		</section>
		<section id="DTV-ATSCMH-SCCC-CODE-MODE-B">
			<title><constant>DTV_ATSCMH_SCCC_CODE_MODE_B</constant></title>
			<para>Series Concatenated Convolutional Code Rate.</para>
			<para>Possible values are:</para>
<programlisting>
typedef enum atscmh_sccc_code_mode {
	ATSCMH_SCCC_CODE_HLF     = 0,
	ATSCMH_SCCC_CODE_QTR     = 1,
} atscmh_sccc_code_mode_t;
</programlisting>
		</section>
		<section id="DTV-ATSCMH-SCCC-CODE-MODE-C">
			<title><constant>DTV_ATSCMH_SCCC_CODE_MODE_C</constant></title>
			<para>Series Concatenated Convolutional Code Rate.</para>
			<para>Possible values are:</para>
<programlisting>
typedef enum atscmh_sccc_code_mode {
	ATSCMH_SCCC_CODE_HLF     = 0,
	ATSCMH_SCCC_CODE_QTR     = 1,
} atscmh_sccc_code_mode_t;
</programlisting>
		</section>
		<section id="DTV-ATSCMH-SCCC-CODE-MODE-D">
			<title><constant>DTV_ATSCMH_SCCC_CODE_MODE_D</constant></title>
			<para>Series Concatenated Convolutional Code Rate.</para>
			<para>Possible values are:</para>
<programlisting>
typedef enum atscmh_sccc_code_mode {
	ATSCMH_SCCC_CODE_HLF     = 0,
	ATSCMH_SCCC_CODE_QTR     = 1,
} atscmh_sccc_code_mode_t;
</programlisting>
		</section>
	</section>
	<section id="DTV-API-VERSION">
	<title><constant>DTV_API_VERSION</constant></title>
	<para>Returns the major/minor version of the DVB API</para>
	</section>
	<section id="DTV-CODE-RATE-HP">
	<title><constant>DTV_CODE_RATE_HP</constant></title>
	<para>Used on terrestrial transmissions. The acceptable values are:
	</para>
	<programlisting>
typedef enum fe_code_rate {
	FEC_NONE = 0,
	FEC_1_2,
	FEC_2_3,
	FEC_3_4,
	FEC_4_5,
	FEC_5_6,
	FEC_6_7,
	FEC_7_8,
	FEC_8_9,
	FEC_AUTO,
	FEC_3_5,
	FEC_9_10,
} fe_code_rate_t;
	</programlisting>
	</section>
	<section id="DTV-CODE-RATE-LP">
	<title><constant>DTV_CODE_RATE_LP</constant></title>
	<para>Used on terrestrial transmissions. The acceptable values are:
	</para>
	<programlisting>
typedef enum fe_code_rate {
	FEC_NONE = 0,
	FEC_1_2,
	FEC_2_3,
	FEC_3_4,
	FEC_4_5,
	FEC_5_6,
	FEC_6_7,
	FEC_7_8,
	FEC_8_9,
	FEC_AUTO,
	FEC_3_5,
	FEC_9_10,
} fe_code_rate_t;
	</programlisting>
	</section>
	<section id="DTV-GUARD-INTERVAL">
		<title><constant>DTV_GUARD_INTERVAL</constant></title>

		<para>Possible values are:</para>
<programlisting>
typedef enum fe_guard_interval {
	GUARD_INTERVAL_1_32,
	GUARD_INTERVAL_1_16,
	GUARD_INTERVAL_1_8,
	GUARD_INTERVAL_1_4,
	GUARD_INTERVAL_AUTO,
	GUARD_INTERVAL_1_128,
	GUARD_INTERVAL_19_128,
	GUARD_INTERVAL_19_256,
	GUARD_INTERVAL_PN420,
	GUARD_INTERVAL_PN595,
	GUARD_INTERVAL_PN945,
} fe_guard_interval_t;
</programlisting>

		<para>Notes:</para>
		<para>1) If <constant>DTV_GUARD_INTERVAL</constant> is set the <constant>GUARD_INTERVAL_AUTO</constant> the hardware will
			try to find the correct guard interval (if capable) and will use TMCC to fill
			in the missing parameters.</para>
		<para>2) Intervals 1/128, 19/128 and 19/256 are used only for DVB-T2 at present</para>
		<para>3) DTMB specifies PN420, PN595 and PN945.</para>
	</section>
	<section id="DTV-TRANSMISSION-MODE">
		<title><constant>DTV_TRANSMISSION_MODE</constant></title>

		<para>Specifies the number of carriers used by the standard</para>

		<para>Possible values are:</para>
<programlisting>
typedef enum fe_transmit_mode {
	TRANSMISSION_MODE_2K,
	TRANSMISSION_MODE_8K,
	TRANSMISSION_MODE_AUTO,
	TRANSMISSION_MODE_4K,
	TRANSMISSION_MODE_1K,
	TRANSMISSION_MODE_16K,
	TRANSMISSION_MODE_32K,
	TRANSMISSION_MODE_C1,
	TRANSMISSION_MODE_C3780,
} fe_transmit_mode_t;
</programlisting>
		<para>Notes:</para>
		<para>1) ISDB-T supports three carrier/symbol-size: 8K, 4K, 2K. It is called
			'mode' in the standard: Mode 1 is 2K, mode 2 is 4K, mode 3 is 8K</para>

		<para>2) If <constant>DTV_TRANSMISSION_MODE</constant> is set the <constant>TRANSMISSION_MODE_AUTO</constant> the
			hardware will try to find the correct FFT-size (if capable) and will
			use TMCC to fill in the missing parameters.</para>
		<para>3) DVB-T specifies 2K and 8K as valid sizes.</para>
		<para>4) DVB-T2 specifies 1K, 2K, 4K, 8K, 16K and 32K.</para>
		<para>5) DTMB specifies C1 and C3780.</para>
	</section>
	<section id="DTV-HIERARCHY">
	<title><constant>DTV_HIERARCHY</constant></title>
	<para>Frontend hierarchy</para>
	<programlisting>
typedef enum fe_hierarchy {
	 HIERARCHY_NONE,
	 HIERARCHY_1,
	 HIERARCHY_2,
	 HIERARCHY_4,
	 HIERARCHY_AUTO
 } fe_hierarchy_t;
	</programlisting>
	</section>
	<section id="DTV-STREAM-ID">
	<title><constant>DTV_STREAM_ID</constant></title>
	<para>DVB-S2, DVB-T2 and ISDB-S support the transmission of several
	      streams on a single transport stream.
	      This property enables the DVB driver to handle substream filtering,
	      when supported by the hardware.
	      By default, substream filtering is disabled.
	</para><para>
	      For DVB-S2 and DVB-T2, the valid substream id range is from 0 to 255.
	</para><para>
	      For ISDB, the valid substream id range is from 1 to 65535.
	</para><para>
	      To disable it, you should use the special macro NO_STREAM_ID_FILTER.
	</para><para>
	      Note: any value outside the id range also disables filtering.
	</para>
	</section>
	<section id="DTV-DVBT2-PLP-ID-LEGACY">
		<title><constant>DTV_DVBT2_PLP_ID_LEGACY</constant></title>
		<para>Obsolete, replaced with DTV_STREAM_ID.</para>
	</section>
	<section id="DTV-ENUM-DELSYS">
		<title><constant>DTV_ENUM_DELSYS</constant></title>
		<para>A Multi standard frontend needs to advertise the delivery systems provided.
			Applications need to enumerate the provided delivery systems, before using
			any other operation with the frontend. Prior to it's introduction,
			FE_GET_INFO was used to determine a frontend type. A frontend which
			provides more than a single delivery system, FE_GET_INFO doesn't help much.
			Applications which intends to use a multistandard frontend must enumerate
			the delivery systems associated with it, rather than trying to use
			FE_GET_INFO. In the case of a legacy frontend, the result is just the same
			as with FE_GET_INFO, but in a more structured format </para>
	</section>
	<section id="DTV-INTERLEAVING">
	<title><constant>DTV_INTERLEAVING</constant></title>
	<para id="fe-interleaving">Interleaving mode</para>
	<programlisting>
enum fe_interleaving {
	INTERLEAVING_NONE,
	INTERLEAVING_AUTO,
	INTERLEAVING_240,
	INTERLEAVING_720,
};
	</programlisting>
	</section>
	<section id="DTV-LNA">
	<title><constant>DTV_LNA</constant></title>
	<para>Low-noise amplifier.</para>
	<para>Hardware might offer controllable LNA which can be set manually
		using that parameter. Usually LNA could be found only from
		terrestrial devices if at all.</para>
	<para>Possible values: 0, 1, LNA_AUTO</para>
	<para>0, LNA off</para>
	<para>1, LNA on</para>
	<para>use the special macro LNA_AUTO to set LNA auto</para>
	</section>
</section>

	<section id="frontend-stat-properties">
	<title>Frontend statistics indicators</title>
	<para>The values are returned via <constant>dtv_property.stat</constant>.
	      If the property is supported, <constant>dtv_property.stat.len</constant> is bigger than zero.</para>
	<para>For most delivery systems, <constant>dtv_property.stat.len</constant>
	      will be 1 if the stats is supported, and the properties will
	      return a single value for each parameter.</para>
	<para>It should be noticed, however, that new OFDM delivery systems
	      like ISDB can use different modulation types for each group of
	      carriers. On such standards, up to 3 groups of statistics can be
	      provided, and <constant>dtv_property.stat.len</constant> is updated
	      to reflect the "global" metrics, plus one metric per each carrier
	      group (called "layer" on ISDB).</para>
	<para>So, in order to be consistent with other delivery systems, the first
	      value at <link linkend="dtv-stats"><constant>dtv_property.stat.dtv_stats</constant></link>
	      array refers to the global metric. The other elements of the array
	      represent each layer, starting from layer A(index 1),
	      layer B (index 2) and so on.</para>
	<para>The number of filled elements are stored at <constant>dtv_property.stat.len</constant>.</para>
	<para>Each element of the <constant>dtv_property.stat.dtv_stats</constant> array consists on two elements:</para>
	<itemizedlist mark='opencircle'>
		<listitem><para><constant>svalue</constant> or <constant>uvalue</constant>, where
			<constant>svalue</constant> is for signed values of the measure (dB measures)
			and <constant>uvalue</constant> is for unsigned values (counters, relative scale)</para></listitem>
		<listitem><para><constant>scale</constant> - Scale for the value. It can be:</para>
			<itemizedlist mark='bullet' id="fecap-scale-params">
				<listitem><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>
				<listitem><para><constant>FE_SCALE_DECIBEL</constant> - parameter is a signed value, measured in 1/1000 dB</para></listitem>
				<listitem><para><constant>FE_SCALE_RELATIVE</constant> - parameter is a unsigned value, where 0 means 0% and 65535 means 100%.</para></listitem>
				<listitem><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>
			</itemizedlist>
		</listitem>
	</itemizedlist>
	<section id="DTV-STAT-SIGNAL-STRENGTH">
		<title><constant>DTV_STAT_SIGNAL_STRENGTH</constant></title>
		<para>Indicates the signal strength level at the analog part of the tuner or of the demod.</para>
		<para>Possible scales for this metric are:</para>
		<itemizedlist mark='bullet'>
			<listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem>
			<listitem><para><constant>FE_SCALE_DECIBEL</constant> - signal strength is in 0.0001 dBm units, power measured in miliwatts. This value is generally negative.</para></listitem>
			<listitem><para><constant>FE_SCALE_RELATIVE</constant> - The frontend provides a 0% to 100% measurement for power (actually, 0 to 65535).</para></listitem>
		</itemizedlist>
	</section>
	<section id="DTV-STAT-CNR">
		<title><constant>DTV_STAT_CNR</constant></title>
		<para>Indicates the Signal to Noise ratio for the main carrier.</para>
		<para>Possible scales for this metric are:</para>
		<itemizedlist mark='bullet'>
			<listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem>
			<listitem><para><constant>FE_SCALE_DECIBEL</constant> - Signal/Noise ratio is in 0.0001 dB units.</para></listitem>
			<listitem><para><constant>FE_SCALE_RELATIVE</constant> - The frontend provides a 0% to 100% measurement for Signal/Noise (actually, 0 to 65535).</para></listitem>
		</itemizedlist>
	</section>
	<section id="DTV-STAT-PRE-ERROR-BIT-COUNT">
		<title><constant>DTV_STAT_PRE_ERROR_BIT_COUNT</constant></title>
		<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>
		<para>This measure is taken during the same interval as <constant>DTV_STAT_PRE_TOTAL_BIT_COUNT</constant>.</para>
		<para>In order to get the BER (Bit Error Rate) measurement, it should be divided by
		<link linkend="DTV-STAT-PRE-TOTAL-BIT-COUNT"><constant>DTV_STAT_PRE_TOTAL_BIT_COUNT</constant></link>.</para>
		<para>This measurement is monotonically increased, as the frontend gets more bit count measurements.
		      The frontend may reset it when a channel/transponder is tuned.</para>
		<para>Possible scales for this metric are:</para>
		<itemizedlist mark='bullet'>
			<listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem>
			<listitem><para><constant>FE_SCALE_COUNTER</constant> - Number of error bits counted before the inner coding.</para></listitem>
		</itemizedlist>
	</section>
	<section id="DTV-STAT-PRE-TOTAL-BIT-COUNT">
		<title><constant>DTV_STAT_PRE_TOTAL_BIT_COUNT</constant></title>
		<para>Measures the amount of bits received before the inner code block, during the same period as
		<link linkend="DTV-STAT-PRE-ERROR-BIT-COUNT"><constant>DTV_STAT_PRE_ERROR_BIT_COUNT</constant></link> measurement was taken.</para>
		<para>It should be noticed that this measurement can be smaller than the total amount of bits on the transport stream,
		      as the frontend may need to manually restart the measurement, losing some data between each measurement interval.</para>
		<para>This measurement is monotonically increased, as the frontend gets more bit count measurements.
		      The frontend may reset it when a channel/transponder is tuned.</para>
		<para>Possible scales for this metric are:</para>
		<itemizedlist mark='bullet'>
			<listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem>
			<listitem><para><constant>FE_SCALE_COUNTER</constant> - Number of bits counted while measuring
				 <link linkend="DTV-STAT-PRE-ERROR-BIT-COUNT"><constant>DTV_STAT_PRE_ERROR_BIT_COUNT</constant></link>.</para></listitem>
		</itemizedlist>
	</section>
	<section id="DTV-STAT-POST-ERROR-BIT-COUNT">
		<title><constant>DTV_STAT_POST_ERROR_BIT_COUNT</constant></title>
		<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>
		<para>This measure is taken during the same interval as <constant>DTV_STAT_POST_TOTAL_BIT_COUNT</constant>.</para>
		<para>In order to get the BER (Bit Error Rate) measurement, it should be divided by
		<link linkend="DTV-STAT-POST-TOTAL-BIT-COUNT"><constant>DTV_STAT_POST_TOTAL_BIT_COUNT</constant></link>.</para>
		<para>This measurement is monotonically increased, as the frontend gets more bit count measurements.
		      The frontend may reset it when a channel/transponder is tuned.</para>
		<para>Possible scales for this metric are:</para>
		<itemizedlist mark='bullet'>
			<listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem>
			<listitem><para><constant>FE_SCALE_COUNTER</constant> - Number of error bits counted after the inner coding.</para></listitem>
		</itemizedlist>
	</section>
	<section id="DTV-STAT-POST-TOTAL-BIT-COUNT">
		<title><constant>DTV_STAT_POST_TOTAL_BIT_COUNT</constant></title>
		<para>Measures the amount of bits received after the inner coding, during the same period as
		<link linkend="DTV-STAT-POST-ERROR-BIT-COUNT"><constant>DTV_STAT_POST_ERROR_BIT_COUNT</constant></link> measurement was taken.</para>
		<para>It should be noticed that this measurement can be smaller than the total amount of bits on the transport stream,
		      as the frontend may need to manually restart the measurement, losing some data between each measurement interval.</para>
		<para>This measurement is monotonically increased, as the frontend gets more bit count measurements.
		      The frontend may reset it when a channel/transponder is tuned.</para>
		<para>Possible scales for this metric are:</para>
		<itemizedlist mark='bullet'>
			<listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem>
			<listitem><para><constant>FE_SCALE_COUNTER</constant> - Number of bits counted while measuring
				 <link linkend="DTV-STAT-POST-ERROR-BIT-COUNT"><constant>DTV_STAT_POST_ERROR_BIT_COUNT</constant></link>.</para></listitem>
		</itemizedlist>
	</section>
	<section id="DTV-STAT-ERROR-BLOCK-COUNT">
		<title><constant>DTV_STAT_ERROR_BLOCK_COUNT</constant></title>
		<para>Measures the number of block errors after the outer forward error correction coding (after Reed-Solomon or other outer code).</para>
		<para>This measurement is monotonically increased, as the frontend gets more bit count measurements.
		      The frontend may reset it when a channel/transponder is tuned.</para>
		<para>Possible scales for this metric are:</para>
		<itemizedlist mark='bullet'>
			<listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem>
			<listitem><para><constant>FE_SCALE_COUNTER</constant> - Number of error blocks counted after the outer coding.</para></listitem>
		</itemizedlist>
	</section>
	<section id="DTV-STAT-TOTAL-BLOCK-COUNT">
		<title><constant>DTV-STAT_TOTAL_BLOCK_COUNT</constant></title>
		<para>Measures the total number of blocks received during the same period as
		<link linkend="DTV-STAT-ERROR-BLOCK-COUNT"><constant>DTV_STAT_ERROR_BLOCK_COUNT</constant></link> measurement was taken.</para>
		<para>It can be used to calculate the PER indicator, by dividing
		<link linkend="DTV-STAT-ERROR-BLOCK-COUNT"><constant>DTV_STAT_ERROR_BLOCK_COUNT</constant></link>
		by <link linkend="DTV-STAT-TOTAL-BLOCK-COUNT"><constant>DTV-STAT-TOTAL-BLOCK-COUNT</constant></link>.</para>
		<para>Possible scales for this metric are:</para>
		<itemizedlist mark='bullet'>
			<listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem>
			<listitem><para><constant>FE_SCALE_COUNTER</constant> - Number of blocks counted while measuring
			<link linkend="DTV-STAT-ERROR-BLOCK-COUNT"><constant>DTV_STAT_ERROR_BLOCK_COUNT</constant></link>.</para></listitem>
		</itemizedlist>
	</section>
	</section>

	<section id="frontend-property-terrestrial-systems">
	<title>Properties used on terrestrial delivery systems</title>
		<section id="dvbt-params">
			<title>DVB-T delivery system</title>
			<para>The following parameters are valid for DVB-T:</para>
			<itemizedlist mark='opencircle'>
				<listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-CODE-RATE-HP"><constant>DTV_CODE_RATE_HP</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-CODE-RATE-LP"><constant>DTV_CODE_RATE_LP</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem>
			</itemizedlist>
			<para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para>
		</section>
		<section id="dvbt2-params">
			<title>DVB-T2 delivery system</title>
			<para>DVB-T2 support is currently in the early stages
			of development, so expect that this section maygrow and become
			more detailed with time.</para>
		<para>The following parameters are valid for DVB-T2:</para>
		<itemizedlist mark='opencircle'>
			<listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-CODE-RATE-HP"><constant>DTV_CODE_RATE_HP</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-CODE-RATE-LP"><constant>DTV_CODE_RATE_LP</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-STREAM-ID"><constant>DTV_STREAM_ID</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem>
		</itemizedlist>
		<para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para>
		</section>
		<section id="isdbt">
		<title>ISDB-T delivery system</title>
		<para>This ISDB-T/ISDB-Tsb API extension should reflect all information
			needed to tune any ISDB-T/ISDB-Tsb hardware. Of course it is possible
			that some very sophisticated devices won't need certain parameters to
			tune.</para>
		<para>The information given here should help application writers to know how
			to handle ISDB-T and ISDB-Tsb hardware using the Linux DVB-API.</para>
		<para>The details given here about ISDB-T and ISDB-Tsb are just enough to
			basically show the dependencies between the needed parameter values,
			but surely some information is left out. For more detailed information
			see the following documents:</para>
		<para>ARIB STD-B31 - "Transmission System for Digital Terrestrial
			Television Broadcasting" and</para>
		<para>ARIB TR-B14 - "Operational Guidelines for Digital Terrestrial
			Television Broadcasting".</para>
		<para>In order to understand the ISDB specific parameters,
			one has to have some knowledge the channel structure in
			ISDB-T and ISDB-Tsb. I.e. it has to be known to
			the reader that an ISDB-T channel consists of 13 segments,
			that it can have up to 3 layer sharing those segments,
			and things like that.</para>
		<para>The following parameters are valid for ISDB-T:</para>
		<itemizedlist mark='opencircle'>
			<listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-ISDBT-LAYER-ENABLED"><constant>DTV_ISDBT_LAYER_ENABLED</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-ISDBT-PARTIAL-RECEPTION"><constant>DTV_ISDBT_PARTIAL_RECEPTION</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-ISDBT-SOUND-BROADCASTING"><constant>DTV_ISDBT_SOUND_BROADCASTING</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-ISDBT-SB-SUBCHANNEL-ID"><constant>DTV_ISDBT_SB_SUBCHANNEL_ID</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-ISDBT-SB-SEGMENT-IDX"><constant>DTV_ISDBT_SB_SEGMENT_IDX</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-ISDBT-SB-SEGMENT-COUNT"><constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-ISDBT-LAYER-FEC"><constant>DTV_ISDBT_LAYERA_FEC</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-ISDBT-LAYER-MODULATION"><constant>DTV_ISDBT_LAYERA_MODULATION</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-ISDBT-LAYER-SEGMENT-COUNT"><constant>DTV_ISDBT_LAYERA_SEGMENT_COUNT</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-ISDBT-LAYER-TIME-INTERLEAVING"><constant>DTV_ISDBT_LAYERA_TIME_INTERLEAVING</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-ISDBT-LAYER-FEC"><constant>DTV_ISDBT_LAYERB_FEC</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-ISDBT-LAYER-MODULATION"><constant>DTV_ISDBT_LAYERB_MODULATION</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-ISDBT-LAYER-SEGMENT-COUNT"><constant>DTV_ISDBT_LAYERB_SEGMENT_COUNT</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-ISDBT-LAYER-TIME-INTERLEAVING"><constant>DTV_ISDBT_LAYERB_TIME_INTERLEAVING</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-ISDBT-LAYER-FEC"><constant>DTV_ISDBT_LAYERC_FEC</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-ISDBT-LAYER-MODULATION"><constant>DTV_ISDBT_LAYERC_MODULATION</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-ISDBT-LAYER-SEGMENT-COUNT"><constant>DTV_ISDBT_LAYERC_SEGMENT_COUNT</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-ISDBT-LAYER-TIME-INTERLEAVING"><constant>DTV_ISDBT_LAYERC_TIME_INTERLEAVING</constant></link></para></listitem>
		</itemizedlist>
		<para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para>
		</section>
		<section id="atsc-params">
			<title>ATSC delivery system</title>
			<para>The following parameters are valid for ATSC:</para>
			<itemizedlist mark='opencircle'>
				<listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
			</itemizedlist>
			<para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para>
		</section>
		<section id="atscmh-params">
			<title>ATSC-MH delivery system</title>
			<para>The following parameters are valid for ATSC-MH:</para>
			<itemizedlist mark='opencircle'>
				<listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-ATSCMH-FIC-VER"><constant>DTV_ATSCMH_FIC_VER</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-ATSCMH-PARADE-ID"><constant>DTV_ATSCMH_PARADE_ID</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-ATSCMH-NOG"><constant>DTV_ATSCMH_NOG</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-ATSCMH-TNOG"><constant>DTV_ATSCMH_TNOG</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-ATSCMH-SGN"><constant>DTV_ATSCMH_SGN</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-ATSCMH-PRC"><constant>DTV_ATSCMH_PRC</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-ATSCMH-RS-FRAME-MODE"><constant>DTV_ATSCMH_RS_FRAME_MODE</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-ATSCMH-RS-FRAME-ENSEMBLE"><constant>DTV_ATSCMH_RS_FRAME_ENSEMBLE</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-ATSCMH-RS-CODE-MODE-PRI"><constant>DTV_ATSCMH_RS_CODE_MODE_PRI</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-ATSCMH-RS-CODE-MODE-SEC"><constant>DTV_ATSCMH_RS_CODE_MODE_SEC</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-ATSCMH-SCCC-BLOCK-MODE"><constant>DTV_ATSCMH_SCCC_BLOCK_MODE</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE-MODE-A"><constant>DTV_ATSCMH_SCCC_CODE_MODE_A</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE-MODE-B"><constant>DTV_ATSCMH_SCCC_CODE_MODE_B</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE-MODE-C"><constant>DTV_ATSCMH_SCCC_CODE_MODE_C</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE-MODE-D"><constant>DTV_ATSCMH_SCCC_CODE_MODE_D</constant></link></para></listitem>
			</itemizedlist>
			<para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para>
		</section>
		<section id="dtmb-params">
			<title>DTMB delivery system</title>
			<para>The following parameters are valid for DTMB:</para>
			<itemizedlist mark='opencircle'>
				<listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-INTERLEAVING"><constant>DTV_INTERLEAVING</constant></link></para></listitem>
				<listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem>
			</itemizedlist>
			<para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para>
		</section>
	</section>
	<section id="frontend-property-cable-systems">
	<title>Properties used on cable delivery systems</title>
	<section id="dvbc-params">
		<title>DVB-C delivery system</title>
		<para>The DVB-C Annex-A is the widely used cable standard. Transmission uses QAM modulation.</para>
		<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>
		<para>The following parameters are valid for DVB-C Annex A/C:</para>
		<itemizedlist mark='opencircle'>
			<listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem>
		</itemizedlist>
		<para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para>
	</section>
	<section id="dvbc-annex-b-params">
		<title>DVB-C Annex B delivery system</title>
		<para>The DVB-C Annex-B is only used on a few Countries like the United States.</para>
		<para>The following parameters are valid for DVB-C Annex B:</para>
		<itemizedlist mark='opencircle'>
			<listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem>
		</itemizedlist>
		<para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para>
	</section>
	</section>
	<section id="frontend-property-satellital-systems">
	<title>Properties used on satellital delivery systems</title>
	<section id="dvbs-params">
		<title>DVB-S delivery system</title>
		<para>The following parameters are valid for DVB-S:</para>
		<itemizedlist mark='opencircle'>
			<listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-VOLTAGE"><constant>DTV_VOLTAGE</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-TONE"><constant>DTV_TONE</constant></link></para></listitem>
		</itemizedlist>
		<para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para>
		<para>Future implementations might add those two missing parameters:</para>
		<itemizedlist mark='opencircle'>
			<listitem><para><link linkend="DTV-DISEQC-MASTER"><constant>DTV_DISEQC_MASTER</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-DISEQC-SLAVE-REPLY"><constant>DTV_DISEQC_SLAVE_REPLY</constant></link></para></listitem>
		</itemizedlist>
	</section>
	<section id="dvbs2-params">
		<title>DVB-S2 delivery system</title>
		<para>In addition to all parameters valid for DVB-S, DVB-S2 supports the following parameters:</para>
		<itemizedlist mark='opencircle'>
			<listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-PILOT"><constant>DTV_PILOT</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-ROLLOFF"><constant>DTV_ROLLOFF</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-STREAM-ID"><constant>DTV_STREAM_ID</constant></link></para></listitem>
		</itemizedlist>
		<para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para>
	</section>
	<section id="turbo-params">
		<title>Turbo code delivery system</title>
		<para>In addition to all parameters valid for DVB-S, turbo code supports the following parameters:</para>
		<itemizedlist mark='opencircle'>
			<listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
		</itemizedlist>
	</section>
	<section id="isdbs-params">
		<title>ISDB-S delivery system</title>
		<para>The following parameters are valid for ISDB-S:</para>
		<itemizedlist mark='opencircle'>
			<listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-VOLTAGE"><constant>DTV_VOLTAGE</constant></link></para></listitem>
			<listitem><para><link linkend="DTV-STREAM-ID"><constant>DTV_STREAM_ID</constant></link></para></listitem>
		</itemizedlist>
	</section>
	</section>
</section>