1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>FE_GET_PROPERTY/FE_SET_PROPERTY</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="LINUX MEDIA INFRASTRUCTURE API"><link rel="up" href="dvb_frontend.html" title="Chapter 9. DVB Frontend API"><link rel="prev" href="frontend_fcalls.html" title="Frontend Function Calls"><link rel="next" href="dvb_demux.html" title="Chapter 10. DVB Demux Device"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><code class="constant">FE_GET_PROPERTY/FE_SET_PROPERTY</code></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="frontend_fcalls.html">Prev</a> </td><th width="60%" align="center">Chapter 9. DVB Frontend API</th><td width="20%" align="right"> <a accesskey="n" href="dvb_demux.html">Next</a></td></tr></table><hr></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="FE_GET_SET_PROPERTY"></a><code class="constant">FE_GET_PROPERTY/FE_SET_PROPERTY</code></h2></div></div></div><div class="toc"><dl class="toc"><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#dtv-stats">DTV stats type</a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#dtv-fe-stats">DTV stats type</a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#dtv-property">DTV property type</a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#dtv-properties">DTV properties type</a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#FE_GET_PROPERTY">FE_GET_PROPERTY</a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#FE_SET_PROPERTY">FE_SET_PROPERTY</a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#idp1127791348">Property types</a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#fe_property_parameters">Digital TV property parameters</a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#frontend-stat-properties">Frontend statistics indicators</a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#frontend-property-terrestrial-systems">Properties used on terrestrial delivery systems</a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#frontend-property-cable-systems">Properties used on cable delivery systems</a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#frontend-property-satellital-systems">Properties used on satellital delivery systems</a></span></dt></dl></div><p>This section describes the DVB version 5 extension of the DVB-API, also 2called "S2API", as this API were added to provide support for DVB-S2. It was 3designed to be able to replace the old frontend API. Yet, the DISEQC and 4the capability ioctls weren't implemented yet via the new way.</p><p>The typical usage for the <code class="constant">FE_GET_PROPERTY/FE_SET_PROPERTY</code> 5API is to replace the ioctl's were the <a class="link" href="dvb_frontend.html#dvb-frontend-parameters" title="frontend parameters"> 6struct <code class="constant">dvb_frontend_parameters</code></a> were used.</p><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="dtv-stats"></a>DTV stats type</h3></div></div></div><pre class="programlisting"> 7struct dtv_stats { 8 __u8 scale; /* enum fecap_scale_params type */ 9 union { 10 __u64 uvalue; /* for counters and relative scales */ 11 __s64 svalue; /* for 1/1000 dB measures */ 12 }; 13} __packed; 14</pre></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="dtv-fe-stats"></a>DTV stats type</h3></div></div></div><pre class="programlisting"> 15#define MAX_DTV_STATS 4 16 17struct dtv_fe_stats { 18 __u8 len; 19 struct dtv_stats stat[MAX_DTV_STATS]; 20} __packed; 21</pre></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="dtv-property"></a>DTV property type</h3></div></div></div><pre class="programlisting"> 22/* Reserved fields should be set to 0 */ 23 24struct dtv_property { 25 __u32 cmd; 26 __u32 reserved[3]; 27 union { 28 __u32 data; 29 struct dtv_fe_stats st; 30 struct { 31 __u8 data[32]; 32 __u32 len; 33 __u32 reserved1[3]; 34 void *reserved2; 35 } buffer; 36 } u; 37 int result; 38} __attribute__ ((packed)); 39 40/* num of properties cannot exceed DTV_IOCTL_MAX_MSGS per ioctl */ 41#define DTV_IOCTL_MAX_MSGS 64 42</pre></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="dtv-properties"></a>DTV properties type</h3></div></div></div><pre class="programlisting"> 43struct dtv_properties { 44 __u32 num; 45 struct dtv_property *props; 46}; 47</pre></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="FE_GET_PROPERTY"></a>FE_GET_PROPERTY</h3></div></div></div><p>DESCRIPTION 48</p><div class="informaltable"><table border="1"><colgroup><col></colgroup><tbody><tr><td align="char"> 49<p>This ioctl call returns one or more frontend properties. This call only 50 requires read-only access to the device.</p> 51</td></tr></tbody></table></div><p>SYNOPSIS 52</p><div class="informaltable"><table border="1"><colgroup><col></colgroup><tbody><tr><td align="char"> 53<p>int ioctl(int fd, int request = <a class="link" href="FE_GET_SET_PROPERTY.html#FE_GET_PROPERTY" title="FE_GET_PROPERTY">FE_GET_PROPERTY</a>, 54 dtv_properties ⋆props);</p> 55</td></tr></tbody></table></div><p>PARAMETERS 56</p><div class="informaltable"><table border="1"><colgroup><col><col></colgroup><tbody><tr><td align="char"> 57<p>int fd</p> 58</td><td align="char"> 59<p>File descriptor returned by a previous call to open().</p> 60</td></tr><tr><td align="char"> 61<p>int num</p> 62</td><td align="char"> 63<p>Equals <a class="link" href="FE_GET_SET_PROPERTY.html#FE_GET_PROPERTY" title="FE_GET_PROPERTY">FE_GET_PROPERTY</a> for this command.</p> 64</td></tr><tr><td align="char"> 65<p>struct dtv_property *props</p> 66</td><td align="char"> 67<p>Points to the location where the front-end property commands are stored.</p> 68</td></tr></tbody></table></div><p>RETURN VALUE</p><p>On success <span class="returnvalue">0</span> is returned, on error <span class="returnvalue">-1</span> and the <code class="varname">errno</code> variable is set appropriately. The generic error codes are described at the <a class="link" href="gen_errors.html#gen-errors" title="Table 19.1. Generic error codes">Generic Error Codes</a> chapter.</p><div class="informaltable"><table border="1"><colgroup><col><col></colgroup><tbody><tr><td align="char"><p>EOPNOTSUPP</p></td><td align="char"><p>Property type not supported.</p></td></tr></tbody></table></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="FE_SET_PROPERTY"></a>FE_SET_PROPERTY</h3></div></div></div><p>DESCRIPTION 69</p><div class="informaltable"><table border="1"><colgroup><col></colgroup><tbody><tr><td align="char"> 70<p>This ioctl call sets one or more frontend properties. This call 71 requires read/write access to the device.</p> 72</td></tr></tbody></table></div><p>SYNOPSIS 73</p><div class="informaltable"><table border="1"><colgroup><col></colgroup><tbody><tr><td align="char"> 74<p>int ioctl(int fd, int request = <a class="link" href="FE_GET_SET_PROPERTY.html#FE_SET_PROPERTY" title="FE_SET_PROPERTY">FE_SET_PROPERTY</a>, 75 dtv_properties ⋆props);</p> 76</td></tr></tbody></table></div><p>PARAMETERS 77</p><div class="informaltable"><table border="1"><colgroup><col><col></colgroup><tbody><tr><td align="char"> 78<p>int fd</p> 79</td><td align="char"> 80<p>File descriptor returned by a previous call to open().</p> 81</td></tr><tr><td align="char"> 82<p>int num</p> 83</td><td align="char"> 84<p>Equals <a class="link" href="FE_GET_SET_PROPERTY.html#FE_SET_PROPERTY" title="FE_SET_PROPERTY">FE_SET_PROPERTY</a> for this command.</p> 85</td></tr><tr><td align="char"> 86<p>struct dtv_property *props</p> 87</td><td align="char"> 88<p>Points to the location where the front-end property commands are stored.</p> 89</td></tr></tbody></table></div><p>RETURN VALUE</p><p>On success <span class="returnvalue">0</span> is returned, on error <span class="returnvalue">-1</span> and the <code class="varname">errno</code> variable is set appropriately. The generic error codes are described at the <a class="link" href="gen_errors.html#gen-errors" title="Table 19.1. Generic error codes">Generic Error Codes</a> chapter.</p><div class="informaltable"><table border="1"><colgroup><col><col></colgroup><tbody><tr><td align="char"><p>EOPNOTSUPP</p></td><td align="char"><p>Property type not supported.</p></td></tr></tbody></table></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="idp1127791348"></a>Property types</h3></div></div></div><p> 90On <a class="link" href="FE_GET_SET_PROPERTY.html#FE_GET_PROPERTY" title="FE_GET_PROPERTY">FE_GET_PROPERTY</a>/<a class="link" href="FE_GET_SET_PROPERTY.html#FE_SET_PROPERTY" title="FE_SET_PROPERTY">FE_SET_PROPERTY</a>, 91the actual action is determined by the dtv_property cmd/data pairs. With one single ioctl, is possible to 92get/set up to 64 properties. The actual meaning of each property is described on the next sections. 93</p><p>The available frontend property types are shown on the next section.</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="fe_property_parameters"></a>Digital TV property parameters</h3></div></div></div><div class="toc"><dl class="toc"><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-UNDEFINED"><code class="constant">DTV_UNDEFINED</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-TUNE"><code class="constant">DTV_TUNE</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-CLEAR"><code class="constant">DTV_CLEAR</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-FREQUENCY"><code class="constant">DTV_FREQUENCY</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-MODULATION"><code class="constant">DTV_MODULATION</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-BANDWIDTH-HZ"><code class="constant">DTV_BANDWIDTH_HZ</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-INVERSION"><code class="constant">DTV_INVERSION</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-DISEQC-MASTER"><code class="constant">DTV_DISEQC_MASTER</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-SYMBOL-RATE"><code class="constant">DTV_SYMBOL_RATE</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-INNER-FEC"><code class="constant">DTV_INNER_FEC</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-VOLTAGE"><code class="constant">DTV_VOLTAGE</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-TONE"><code class="constant">DTV_TONE</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-PILOT"><code class="constant">DTV_PILOT</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-ROLLOFF"><code class="constant">DTV_ROLLOFF</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-DISEQC-SLAVE-REPLY"><code class="constant">DTV_DISEQC_SLAVE_REPLY</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-FE-CAPABILITY-COUNT"><code class="constant">DTV_FE_CAPABILITY_COUNT</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-FE-CAPABILITY"><code class="constant">DTV_FE_CAPABILITY</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-DELIVERY-SYSTEM"><code class="constant">DTV_DELIVERY_SYSTEM</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-PARTIAL-RECEPTION"><code class="constant">DTV_ISDBT_PARTIAL_RECEPTION</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-SOUND-BROADCASTING"><code class="constant">DTV_ISDBT_SOUND_BROADCASTING</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-SB-SUBCHANNEL-ID"><code class="constant">DTV_ISDBT_SB_SUBCHANNEL_ID</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-SB-SEGMENT-IDX"><code class="constant">DTV_ISDBT_SB_SEGMENT_IDX</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-SB-SEGMENT-COUNT"><code class="constant">DTV_ISDBT_SB_SEGMENT_COUNT</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#isdb-hierq-layers"><code class="constant">DTV-ISDBT-LAYER*</code> parameters</a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-API-VERSION"><code class="constant">DTV_API_VERSION</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-CODE-RATE-HP"><code class="constant">DTV_CODE_RATE_HP</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-CODE-RATE-LP"><code class="constant">DTV_CODE_RATE_LP</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-GUARD-INTERVAL"><code class="constant">DTV_GUARD_INTERVAL</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-TRANSMISSION-MODE"><code class="constant">DTV_TRANSMISSION_MODE</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-HIERARCHY"><code class="constant">DTV_HIERARCHY</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-STREAM-ID"><code class="constant">DTV_STREAM_ID</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-DVBT2-PLP-ID-LEGACY"><code class="constant">DTV_DVBT2_PLP_ID_LEGACY</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-ENUM-DELSYS"><code class="constant">DTV_ENUM_DELSYS</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-INTERLEAVING"><code class="constant">DTV_INTERLEAVING</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-LNA"><code class="constant">DTV_LNA</code></a></span></dt></dl></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-UNDEFINED"></a><code class="constant">DTV_UNDEFINED</code></h4></div></div></div><p>Used internally. A GET/SET operation for it won't change or return anything.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-TUNE"></a><code class="constant">DTV_TUNE</code></h4></div></div></div><p>Interpret the cache of data, build either a traditional frontend tunerequest so we can pass validation in the <code class="constant">FE_SET_FRONTEND</code> ioctl.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-CLEAR"></a><code class="constant">DTV_CLEAR</code></h4></div></div></div><p>Reset a cache of data specific to the frontend here. This does not effect hardware.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-FREQUENCY"></a><code class="constant">DTV_FREQUENCY</code></h4></div></div></div><p>Central frequency of the channel.</p><p>Notes:</p><p>1)For satellital delivery systems, it is measured in kHz. 94 For the other ones, it is measured in Hz.</p><p>2)For ISDB-T, the channels are usually transmitted with an offset of 143kHz. 95 E.g. a valid frequency could be 474143 kHz. The stepping is bound to the bandwidth of 96 the channel which is 6MHz.</p><p>3)As in ISDB-Tsb the channel consists of only one or three segments the 97 frequency step is 429kHz, 3*429 respectively. As for ISDB-T the 98 central frequency of the channel is expected.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-MODULATION"></a><code class="constant">DTV_MODULATION</code></h4></div></div></div><p>Specifies the frontend modulation type for cable and satellite types. The modulation can be one of the types bellow:</p><pre class="programlisting"> 99 typedef enum fe_modulation { 100 QPSK, 101 QAM_16, 102 QAM_32, 103 QAM_64, 104 QAM_128, 105 QAM_256, 106 QAM_AUTO, 107 VSB_8, 108 VSB_16, 109 PSK_8, 110 APSK_16, 111 APSK_32, 112 DQPSK, 113 QAM_4_NR, 114 } fe_modulation_t; 115</pre></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-BANDWIDTH-HZ"></a><code class="constant">DTV_BANDWIDTH_HZ</code></h4></div></div></div><p>Bandwidth for the channel, in HZ.</p><p>Possible values: 116 <code class="constant">1712000</code>, 117 <code class="constant">5000000</code>, 118 <code class="constant">6000000</code>, 119 <code class="constant">7000000</code>, 120 <code class="constant">8000000</code>, 121 <code class="constant">10000000</code>. 122 </p><p>Notes:</p><p>1) For ISDB-T it should be always 6000000Hz (6MHz)</p><p>2) For ISDB-Tsb it can vary depending on the number of connected segments</p><p>3) Bandwidth doesn't apply for DVB-C transmissions, as the bandwidth 123 for DVB-C depends on the symbol rate</p><p>4) Bandwidth in ISDB-T is fixed (6MHz) or can be easily derived from 124 other parameters (DTV_ISDBT_SB_SEGMENT_IDX, 125 DTV_ISDBT_SB_SEGMENT_COUNT).</p><p>5) DVB-T supports 6, 7 and 8MHz.</p><p>6) In addition, DVB-T2 supports 1.172, 5 and 10MHz.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-INVERSION"></a><code class="constant">DTV_INVERSION</code></h4></div></div></div><p>The Inversion field can take one of these values: 126 </p><pre class="programlisting"> 127 typedef enum fe_spectral_inversion { 128 INVERSION_OFF, 129 INVERSION_ON, 130 INVERSION_AUTO 131 } fe_spectral_inversion_t; 132 </pre><p>It indicates if spectral inversion should be presumed or not. In the automatic setting 133 (<code class="constant">INVERSION_AUTO</code>) the hardware will try to figure out the correct setting by 134 itself. 135 </p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-DISEQC-MASTER"></a><code class="constant">DTV_DISEQC_MASTER</code></h4></div></div></div><p>Currently not implemented.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-SYMBOL-RATE"></a><code class="constant">DTV_SYMBOL_RATE</code></h4></div></div></div><p>Digital TV symbol rate, in bauds (symbols/second). Used on cable standards.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-INNER-FEC"></a><code class="constant">DTV_INNER_FEC</code></h4></div></div></div><p>Used cable/satellite transmissions. The acceptable values are: 136 </p><pre class="programlisting"> 137typedef enum fe_code_rate { 138 FEC_NONE = 0, 139 FEC_1_2, 140 FEC_2_3, 141 FEC_3_4, 142 FEC_4_5, 143 FEC_5_6, 144 FEC_6_7, 145 FEC_7_8, 146 FEC_8_9, 147 FEC_AUTO, 148 FEC_3_5, 149 FEC_9_10, 150 FEC_2_5, 151} fe_code_rate_t; 152 </pre><p>which correspond to error correction rates of 1/2, 2/3, etc., 153 no error correction or auto detection.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-VOLTAGE"></a><code class="constant">DTV_VOLTAGE</code></h4></div></div></div><p>The voltage is usually used with non-DiSEqC capable LNBs to switch 154 the polarzation (horizontal/vertical). When using DiSEqC epuipment this 155 voltage has to be switched consistently to the DiSEqC commands as 156 described in the DiSEqC spec.</p><pre class="programlisting"> 157 typedef enum fe_sec_voltage { 158 SEC_VOLTAGE_13, 159 SEC_VOLTAGE_18 160 } fe_sec_voltage_t; 161 </pre></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-TONE"></a><code class="constant">DTV_TONE</code></h4></div></div></div><p>Currently not used.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-PILOT"></a><code class="constant">DTV_PILOT</code></h4></div></div></div><p>Sets DVB-S2 pilot</p><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="fe-pilot-t"></a>fe_pilot type</h5></div></div></div><pre class="programlisting"> 162typedef enum fe_pilot { 163 PILOT_ON, 164 PILOT_OFF, 165 PILOT_AUTO, 166} fe_pilot_t; 167 </pre></div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-ROLLOFF"></a><code class="constant">DTV_ROLLOFF</code></h4></div></div></div><p>Sets DVB-S2 rolloff</p><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="fe-rolloff-t"></a>fe_rolloff type</h5></div></div></div><pre class="programlisting"> 168typedef enum fe_rolloff { 169 ROLLOFF_35, /* Implied value in DVB-S, default for DVB-S2 */ 170 ROLLOFF_20, 171 ROLLOFF_25, 172 ROLLOFF_AUTO, 173} fe_rolloff_t; 174 </pre></div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-DISEQC-SLAVE-REPLY"></a><code class="constant">DTV_DISEQC_SLAVE_REPLY</code></h4></div></div></div><p>Currently not implemented.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-FE-CAPABILITY-COUNT"></a><code class="constant">DTV_FE_CAPABILITY_COUNT</code></h4></div></div></div><p>Currently not implemented.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-FE-CAPABILITY"></a><code class="constant">DTV_FE_CAPABILITY</code></h4></div></div></div><p>Currently not implemented.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-DELIVERY-SYSTEM"></a><code class="constant">DTV_DELIVERY_SYSTEM</code></h4></div></div></div><p>Specifies the type of Delivery system</p><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="fe-delivery-system-t"></a>fe_delivery_system type</h5></div></div></div><p>Possible values: </p><pre class="programlisting"> 175 176typedef enum fe_delivery_system { 177 SYS_UNDEFINED, 178 SYS_DVBC_ANNEX_A, 179 SYS_DVBC_ANNEX_B, 180 SYS_DVBT, 181 SYS_DSS, 182 SYS_DVBS, 183 SYS_DVBS2, 184 SYS_DVBH, 185 SYS_ISDBT, 186 SYS_ISDBS, 187 SYS_ISDBC, 188 SYS_ATSC, 189 SYS_ATSCMH, 190 SYS_DTMB, 191 SYS_CMMB, 192 SYS_DAB, 193 SYS_DVBT2, 194 SYS_TURBO, 195 SYS_DVBC_ANNEX_C, 196} fe_delivery_system_t; 197</pre></div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-ISDBT-PARTIAL-RECEPTION"></a><code class="constant">DTV_ISDBT_PARTIAL_RECEPTION</code></h4></div></div></div><p>If <code class="constant">DTV_ISDBT_SOUND_BROADCASTING</code> is '0' this bit-field represents whether 198 the channel is in partial reception mode or not.</p><p>If '1' <code class="constant">DTV_ISDBT_LAYERA_*</code> values are assigned to the center segment and 199 <code class="constant">DTV_ISDBT_LAYERA_SEGMENT_COUNT</code> has to be '1'.</p><p>If in addition <code class="constant">DTV_ISDBT_SOUND_BROADCASTING</code> is '1' 200 <code class="constant">DTV_ISDBT_PARTIAL_RECEPTION</code> represents whether this ISDB-Tsb channel 201 is consisting of one segment and layer or three segments and two layers.</p><p>Possible values: 0, 1, -1 (AUTO)</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-ISDBT-SOUND-BROADCASTING"></a><code class="constant">DTV_ISDBT_SOUND_BROADCASTING</code></h4></div></div></div><p>This field represents whether the other DTV_ISDBT_*-parameters are 202 referring to an ISDB-T and an ISDB-Tsb channel. (See also 203 <code class="constant">DTV_ISDBT_PARTIAL_RECEPTION</code>).</p><p>Possible values: 0, 1, -1 (AUTO)</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-ISDBT-SB-SUBCHANNEL-ID"></a><code class="constant">DTV_ISDBT_SB_SUBCHANNEL_ID</code></h4></div></div></div><p>This field only applies if <code class="constant">DTV_ISDBT_SOUND_BROADCASTING</code> is '1'.</p><p>(Note of the author: This might not be the correct description of the 204 <code class="constant">SUBCHANNEL-ID</code> in all details, but it is my understanding of the technical 205 background needed to program a device)</p><p>An ISDB-Tsb channel (1 or 3 segments) can be broadcasted alone or in a 206 set of connected ISDB-Tsb channels. In this set of channels every 207 channel can be received independently. The number of connected 208 ISDB-Tsb segment can vary, e.g. depending on the frequency spectrum 209 bandwidth available.</p><p>Example: Assume 8 ISDB-Tsb connected segments are broadcasted. The 210 broadcaster has several possibilities to put those channels in the 211 air: Assuming a normal 13-segment ISDB-T spectrum he can align the 8 212 segments from position 1-8 to 5-13 or anything in between.</p><p>The underlying layer of segments are subchannels: each segment is 213 consisting of several subchannels with a predefined IDs. A sub-channel 214 is used to help the demodulator to synchronize on the channel.</p><p>An ISDB-T channel is always centered over all sub-channels. As for 215 the example above, in ISDB-Tsb it is no longer as simple as that.</p><p><code class="constant">The DTV_ISDBT_SB_SUBCHANNEL_ID</code> parameter is used to give the 216 sub-channel ID of the segment to be demodulated.</p><p>Possible values: 0 .. 41, -1 (AUTO)</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-ISDBT-SB-SEGMENT-IDX"></a><code class="constant">DTV_ISDBT_SB_SEGMENT_IDX</code></h4></div></div></div><p>This field only applies if <code class="constant">DTV_ISDBT_SOUND_BROADCASTING</code> is '1'.</p><p><code class="constant">DTV_ISDBT_SB_SEGMENT_IDX</code> gives the index of the segment to be 217 demodulated for an ISDB-Tsb channel where several of them are 218 transmitted in the connected manner.</p><p>Possible values: 0 .. <code class="constant">DTV_ISDBT_SB_SEGMENT_COUNT</code> - 1</p><p>Note: This value cannot be determined by an automatic channel search.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-ISDBT-SB-SEGMENT-COUNT"></a><code class="constant">DTV_ISDBT_SB_SEGMENT_COUNT</code></h4></div></div></div><p>This field only applies if <code class="constant">DTV_ISDBT_SOUND_BROADCASTING</code> is '1'.</p><p><code class="constant">DTV_ISDBT_SB_SEGMENT_COUNT</code> gives the total count of connected ISDB-Tsb 219 channels.</p><p>Possible values: 1 .. 13</p><p>Note: This value cannot be determined by an automatic channel search.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="isdb-hierq-layers"></a><code class="constant">DTV-ISDBT-LAYER*</code> parameters</h4></div></div></div><p>ISDB-T channels can be coded hierarchically. As opposed to DVB-T in 220 ISDB-T hierarchical layers can be decoded simultaneously. For that 221 reason a ISDB-T demodulator has 3 Viterbi and 3 Reed-Solomon decoders.</p><p>ISDB-T has 3 hierarchical layers which each can use a part of the 222 available segments. The total number of segments over all layers has 223 to 13 in ISDB-T.</p><p>There are 3 parameter sets, for Layers A, B and C.</p><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="DTV-ISDBT-LAYER-ENABLED"></a><code class="constant">DTV_ISDBT_LAYER_ENABLED</code></h5></div></div></div><p>Hierarchical reception in ISDB-T is achieved by enabling or disabling 224 layers in the decoding process. Setting all bits of 225 <code class="constant">DTV_ISDBT_LAYER_ENABLED</code> to '1' forces all layers (if applicable) to be 226 demodulated. This is the default.</p><p>If the channel is in the partial reception mode 227 (<code class="constant">DTV_ISDBT_PARTIAL_RECEPTION</code> = 1) the central segment can be decoded 228 independently of the other 12 segments. In that mode layer A has to 229 have a <code class="constant">SEGMENT_COUNT</code> of 1.</p><p>In ISDB-Tsb only layer A is used, it can be 1 or 3 in ISDB-Tsb 230 according to <code class="constant">DTV_ISDBT_PARTIAL_RECEPTION</code>. <code class="constant">SEGMENT_COUNT</code> must be filled 231 accordingly.</p><p>Possible values: 0x1, 0x2, 0x4 (|-able)</p><p><code class="constant">DTV_ISDBT_LAYER_ENABLED[0:0]</code> - layer A</p><p><code class="constant">DTV_ISDBT_LAYER_ENABLED[1:1]</code> - layer B</p><p><code class="constant">DTV_ISDBT_LAYER_ENABLED[2:2]</code> - layer C</p><p><code class="constant">DTV_ISDBT_LAYER_ENABLED[31:3]</code> unused</p></div><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="DTV-ISDBT-LAYER-FEC"></a><code class="constant">DTV_ISDBT_LAYER*_FEC</code></h5></div></div></div><p>Possible values: <code class="constant">FEC_AUTO</code>, <code class="constant">FEC_1_2</code>, <code class="constant">FEC_2_3</code>, <code class="constant">FEC_3_4</code>, <code class="constant">FEC_5_6</code>, <code class="constant">FEC_7_8</code></p></div><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="DTV-ISDBT-LAYER-MODULATION"></a><code class="constant">DTV_ISDBT_LAYER*_MODULATION</code></h5></div></div></div><p>Possible values: <code class="constant">QAM_AUTO</code>, QP<code class="constant">SK, QAM_16</code>, <code class="constant">QAM_64</code>, <code class="constant">DQPSK</code></p><p>Note: If layer C is <code class="constant">DQPSK</code> layer B has to be <code class="constant">DQPSK</code>. If layer B is <code class="constant">DQPSK</code> 232 and <code class="constant">DTV_ISDBT_PARTIAL_RECEPTION</code>=0 layer has to be <code class="constant">DQPSK</code>.</p></div><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="DTV-ISDBT-LAYER-SEGMENT-COUNT"></a><code class="constant">DTV_ISDBT_LAYER*_SEGMENT_COUNT</code></h5></div></div></div><p>Possible values: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, -1 (AUTO)</p><p>Note: Truth table for <code class="constant">DTV_ISDBT_SOUND_BROADCASTING</code> and 233 <code class="constant">DTV_ISDBT_PARTIAL_RECEPTION</code> and <code class="constant">LAYER</code>*_SEGMENT_COUNT</p><div class="informaltable"><a name="isdbt-layer_seg-cnt-table"></a><table border="1"><colgroup><col><col><col><col><col><col></colgroup><tbody><tr><td>PR</td><td>SB</td><td>Layer A width</td><td>Layer B width</td><td>Layer C width</td><td>total width</td></tr><tr><td>0</td><td>0</td><td>1 .. 13</td><td>1 .. 13</td><td>1 .. 13</td><td>13</td></tr><tr><td>1</td><td>0</td><td>1</td><td>1 .. 13</td><td>1 .. 13</td><td>13</td></tr><tr><td>0</td><td>1</td><td>1</td><td>0</td><td>0</td><td>1</td></tr><tr><td>1</td><td>1</td><td>1</td><td>2</td><td>0</td><td>13</td></tr></tbody></table></div></div><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="DTV-ISDBT-LAYER-TIME-INTERLEAVING"></a><code class="constant">DTV_ISDBT_LAYER*_TIME_INTERLEAVING</code></h5></div></div></div><p>Valid values: 0, 1, 2, 4, -1 (AUTO)</p><p>when DTV_ISDBT_SOUND_BROADCASTING is active, value 8 is also valid.</p><p>Note: The real time interleaving length depends on the mode (fft-size). The values 234 here are referring to what can be found in the TMCC-structure, as shown in the table below.</p><div class="informaltable"><a name="isdbt-layer-interleaving-table"></a><table border="1"><colgroup><col><col><col><col></colgroup><tbody><tr><td align="center">DTV_ISDBT_LAYER*_TIME_INTERLEAVING</td><td align="center">Mode 1 (2K FFT)</td><td align="center">Mode 2 (4K FFT)</td><td align="center">Mode 3 (8K FFT)</td></tr><tr><td align="center">0</td><td align="center">0</td><td align="center">0</td><td align="center">0</td></tr><tr><td align="center">1</td><td align="center">4</td><td align="center">2</td><td align="center">1</td></tr><tr><td align="center">2</td><td align="center">8</td><td align="center">4</td><td align="center">2</td></tr><tr><td align="center">4</td><td align="center">16</td><td align="center">8</td><td align="center">4</td></tr></tbody></table></div></div><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="DTV-ATSCMH-FIC-VER"></a><code class="constant">DTV_ATSCMH_FIC_VER</code></h5></div></div></div><p>Version number of the FIC (Fast Information Channel) signaling data.</p><p>FIC is used for relaying information to allow rapid service acquisition by the receiver.</p><p>Possible values: 0, 1, 2, 3, ..., 30, 31</p></div><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="DTV-ATSCMH-PARADE-ID"></a><code class="constant">DTV_ATSCMH_PARADE_ID</code></h5></div></div></div><p>Parade identification number</p><p>A parade is a collection of up to eight MH groups, conveying one or two ensembles.</p><p>Possible values: 0, 1, 2, 3, ..., 126, 127</p></div><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="DTV-ATSCMH-NOG"></a><code class="constant">DTV_ATSCMH_NOG</code></h5></div></div></div><p>Number of MH groups per MH subframe for a designated parade.</p><p>Possible values: 1, 2, 3, 4, 5, 6, 7, 8</p></div><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="DTV-ATSCMH-TNOG"></a><code class="constant">DTV_ATSCMH_TNOG</code></h5></div></div></div><p>Total number of MH groups including all MH groups belonging to all MH parades in one MH subframe.</p><p>Possible values: 0, 1, 2, 3, ..., 30, 31</p></div><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="DTV-ATSCMH-SGN"></a><code class="constant">DTV_ATSCMH_SGN</code></h5></div></div></div><p>Start group number.</p><p>Possible values: 0, 1, 2, 3, ..., 14, 15</p></div><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="DTV-ATSCMH-PRC"></a><code class="constant">DTV_ATSCMH_PRC</code></h5></div></div></div><p>Parade repetition cycle.</p><p>Possible values: 1, 2, 3, 4, 5, 6, 7, 8</p></div><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="DTV-ATSCMH-RS-FRAME-MODE"></a><code class="constant">DTV_ATSCMH_RS_FRAME_MODE</code></h5></div></div></div><p>RS frame mode.</p><p>Possible values are:</p><p><a name="atscmh-rs-frame-mode"></a> 235</p><pre class="programlisting"> 236typedef enum atscmh_rs_frame_mode { 237 ATSCMH_RSFRAME_PRI_ONLY = 0, 238 ATSCMH_RSFRAME_PRI_SEC = 1, 239} atscmh_rs_frame_mode_t; 240</pre><p> 241 </p></div><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="DTV-ATSCMH-RS-FRAME-ENSEMBLE"></a><code class="constant">DTV_ATSCMH_RS_FRAME_ENSEMBLE</code></h5></div></div></div><p>RS frame ensemble.</p><p>Possible values are:</p><p><a name="atscmh-rs-frame-ensemble"></a> 242</p><pre class="programlisting"> 243typedef enum atscmh_rs_frame_ensemble { 244 ATSCMH_RSFRAME_ENS_PRI = 0, 245 ATSCMH_RSFRAME_ENS_SEC = 1, 246} atscmh_rs_frame_ensemble_t; 247</pre><p> 248 </p></div><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="DTV-ATSCMH-RS-CODE-MODE-PRI"></a><code class="constant">DTV_ATSCMH_RS_CODE_MODE_PRI</code></h5></div></div></div><p>RS code mode (primary).</p><p>Possible values are:</p><p><a name="atscmh-rs-code-mode"></a> 249</p><pre class="programlisting"> 250typedef enum atscmh_rs_code_mode { 251 ATSCMH_RSCODE_211_187 = 0, 252 ATSCMH_RSCODE_223_187 = 1, 253 ATSCMH_RSCODE_235_187 = 2, 254} atscmh_rs_code_mode_t; 255</pre><p> 256 </p></div><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="DTV-ATSCMH-RS-CODE-MODE-SEC"></a><code class="constant">DTV_ATSCMH_RS_CODE_MODE_SEC</code></h5></div></div></div><p>RS code mode (secondary).</p><p>Possible values are:</p><pre class="programlisting"> 257typedef enum atscmh_rs_code_mode { 258 ATSCMH_RSCODE_211_187 = 0, 259 ATSCMH_RSCODE_223_187 = 1, 260 ATSCMH_RSCODE_235_187 = 2, 261} atscmh_rs_code_mode_t; 262</pre></div><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="DTV-ATSCMH-SCCC-BLOCK-MODE"></a><code class="constant">DTV_ATSCMH_SCCC_BLOCK_MODE</code></h5></div></div></div><p>Series Concatenated Convolutional Code Block Mode.</p><p>Possible values are:</p><p><a name="atscmh-sccc-block-mode"></a> 263</p><pre class="programlisting"> 264typedef enum atscmh_sccc_block_mode { 265 ATSCMH_SCCC_BLK_SEP = 0, 266 ATSCMH_SCCC_BLK_COMB = 1, 267} atscmh_sccc_block_mode_t; 268</pre><p> 269 </p></div><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="DTV-ATSCMH-SCCC-CODE-MODE-A"></a><code class="constant">DTV_ATSCMH_SCCC_CODE_MODE_A</code></h5></div></div></div><p>Series Concatenated Convolutional Code Rate.</p><p>Possible values are:</p><p><a name="atscmh-sccc-code-mode"></a> 270</p><pre class="programlisting"> 271typedef enum atscmh_sccc_code_mode { 272 ATSCMH_SCCC_CODE_HLF = 0, 273 ATSCMH_SCCC_CODE_QTR = 1, 274} atscmh_sccc_code_mode_t; 275</pre><p> 276 </p></div><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="DTV-ATSCMH-SCCC-CODE-MODE-B"></a><code class="constant">DTV_ATSCMH_SCCC_CODE_MODE_B</code></h5></div></div></div><p>Series Concatenated Convolutional Code Rate.</p><p>Possible values are:</p><pre class="programlisting"> 277typedef enum atscmh_sccc_code_mode { 278 ATSCMH_SCCC_CODE_HLF = 0, 279 ATSCMH_SCCC_CODE_QTR = 1, 280} atscmh_sccc_code_mode_t; 281</pre></div><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="DTV-ATSCMH-SCCC-CODE-MODE-C"></a><code class="constant">DTV_ATSCMH_SCCC_CODE_MODE_C</code></h5></div></div></div><p>Series Concatenated Convolutional Code Rate.</p><p>Possible values are:</p><pre class="programlisting"> 282typedef enum atscmh_sccc_code_mode { 283 ATSCMH_SCCC_CODE_HLF = 0, 284 ATSCMH_SCCC_CODE_QTR = 1, 285} atscmh_sccc_code_mode_t; 286</pre></div><div class="section"><div class="titlepage"><div><div><h5 class="title"><a name="DTV-ATSCMH-SCCC-CODE-MODE-D"></a><code class="constant">DTV_ATSCMH_SCCC_CODE_MODE_D</code></h5></div></div></div><p>Series Concatenated Convolutional Code Rate.</p><p>Possible values are:</p><pre class="programlisting"> 287typedef enum atscmh_sccc_code_mode { 288 ATSCMH_SCCC_CODE_HLF = 0, 289 ATSCMH_SCCC_CODE_QTR = 1, 290} atscmh_sccc_code_mode_t; 291</pre></div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-API-VERSION"></a><code class="constant">DTV_API_VERSION</code></h4></div></div></div><p>Returns the major/minor version of the DVB API</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-CODE-RATE-HP"></a><code class="constant">DTV_CODE_RATE_HP</code></h4></div></div></div><p>Used on terrestrial transmissions. The acceptable values are: 292 </p><pre class="programlisting"> 293typedef enum fe_code_rate { 294 FEC_NONE = 0, 295 FEC_1_2, 296 FEC_2_3, 297 FEC_3_4, 298 FEC_4_5, 299 FEC_5_6, 300 FEC_6_7, 301 FEC_7_8, 302 FEC_8_9, 303 FEC_AUTO, 304 FEC_3_5, 305 FEC_9_10, 306} fe_code_rate_t; 307 </pre></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-CODE-RATE-LP"></a><code class="constant">DTV_CODE_RATE_LP</code></h4></div></div></div><p>Used on terrestrial transmissions. The acceptable values are: 308 </p><pre class="programlisting"> 309typedef enum fe_code_rate { 310 FEC_NONE = 0, 311 FEC_1_2, 312 FEC_2_3, 313 FEC_3_4, 314 FEC_4_5, 315 FEC_5_6, 316 FEC_6_7, 317 FEC_7_8, 318 FEC_8_9, 319 FEC_AUTO, 320 FEC_3_5, 321 FEC_9_10, 322} fe_code_rate_t; 323 </pre></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-GUARD-INTERVAL"></a><code class="constant">DTV_GUARD_INTERVAL</code></h4></div></div></div><p>Possible values are:</p><pre class="programlisting"> 324typedef enum fe_guard_interval { 325 GUARD_INTERVAL_1_32, 326 GUARD_INTERVAL_1_16, 327 GUARD_INTERVAL_1_8, 328 GUARD_INTERVAL_1_4, 329 GUARD_INTERVAL_AUTO, 330 GUARD_INTERVAL_1_128, 331 GUARD_INTERVAL_19_128, 332 GUARD_INTERVAL_19_256, 333 GUARD_INTERVAL_PN420, 334 GUARD_INTERVAL_PN595, 335 GUARD_INTERVAL_PN945, 336} fe_guard_interval_t; 337</pre><p>Notes:</p><p>1) If <code class="constant">DTV_GUARD_INTERVAL</code> is set the <code class="constant">GUARD_INTERVAL_AUTO</code> the hardware will 338 try to find the correct guard interval (if capable) and will use TMCC to fill 339 in the missing parameters.</p><p>2) Intervals 1/128, 19/128 and 19/256 are used only for DVB-T2 at present</p><p>3) DTMB specifies PN420, PN595 and PN945.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-TRANSMISSION-MODE"></a><code class="constant">DTV_TRANSMISSION_MODE</code></h4></div></div></div><p>Specifies the number of carriers used by the standard</p><p>Possible values are:</p><pre class="programlisting"> 340typedef enum fe_transmit_mode { 341 TRANSMISSION_MODE_2K, 342 TRANSMISSION_MODE_8K, 343 TRANSMISSION_MODE_AUTO, 344 TRANSMISSION_MODE_4K, 345 TRANSMISSION_MODE_1K, 346 TRANSMISSION_MODE_16K, 347 TRANSMISSION_MODE_32K, 348 TRANSMISSION_MODE_C1, 349 TRANSMISSION_MODE_C3780, 350} fe_transmit_mode_t; 351</pre><p>Notes:</p><p>1) ISDB-T supports three carrier/symbol-size: 8K, 4K, 2K. It is called 352 'mode' in the standard: Mode 1 is 2K, mode 2 is 4K, mode 3 is 8K</p><p>2) If <code class="constant">DTV_TRANSMISSION_MODE</code> is set the <code class="constant">TRANSMISSION_MODE_AUTO</code> the 353 hardware will try to find the correct FFT-size (if capable) and will 354 use TMCC to fill in the missing parameters.</p><p>3) DVB-T specifies 2K and 8K as valid sizes.</p><p>4) DVB-T2 specifies 1K, 2K, 4K, 8K, 16K and 32K.</p><p>5) DTMB specifies C1 and C3780.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-HIERARCHY"></a><code class="constant">DTV_HIERARCHY</code></h4></div></div></div><p>Frontend hierarchy</p><pre class="programlisting"> 355typedef enum fe_hierarchy { 356 HIERARCHY_NONE, 357 HIERARCHY_1, 358 HIERARCHY_2, 359 HIERARCHY_4, 360 HIERARCHY_AUTO 361 } fe_hierarchy_t; 362 </pre></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-STREAM-ID"></a><code class="constant">DTV_STREAM_ID</code></h4></div></div></div><p>DVB-S2, DVB-T2 and ISDB-S support the transmission of several 363 streams on a single transport stream. 364 This property enables the DVB driver to handle substream filtering, 365 when supported by the hardware. 366 By default, substream filtering is disabled. 367 </p><p> 368 For DVB-S2 and DVB-T2, the valid substream id range is from 0 to 255. 369 </p><p> 370 For ISDB, the valid substream id range is from 1 to 65535. 371 </p><p> 372 To disable it, you should use the special macro NO_STREAM_ID_FILTER. 373 </p><p> 374 Note: any value outside the id range also disables filtering. 375 </p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-DVBT2-PLP-ID-LEGACY"></a><code class="constant">DTV_DVBT2_PLP_ID_LEGACY</code></h4></div></div></div><p>Obsolete, replaced with DTV_STREAM_ID.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-ENUM-DELSYS"></a><code class="constant">DTV_ENUM_DELSYS</code></h4></div></div></div><p>A Multi standard frontend needs to advertise the delivery systems provided. 376 Applications need to enumerate the provided delivery systems, before using 377 any other operation with the frontend. Prior to it's introduction, 378 FE_GET_INFO was used to determine a frontend type. A frontend which 379 provides more than a single delivery system, FE_GET_INFO doesn't help much. 380 Applications which intends to use a multistandard frontend must enumerate 381 the delivery systems associated with it, rather than trying to use 382 FE_GET_INFO. In the case of a legacy frontend, the result is just the same 383 as with FE_GET_INFO, but in a more structured format </p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-INTERLEAVING"></a><code class="constant">DTV_INTERLEAVING</code></h4></div></div></div><p><a name="fe-interleaving"></a>Interleaving mode</p><pre class="programlisting"> 384enum fe_interleaving { 385 INTERLEAVING_NONE, 386 INTERLEAVING_AUTO, 387 INTERLEAVING_240, 388 INTERLEAVING_720, 389}; 390 </pre></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-LNA"></a><code class="constant">DTV_LNA</code></h4></div></div></div><p>Low-noise amplifier.</p><p>Hardware might offer controllable LNA which can be set manually 391 using that parameter. Usually LNA could be found only from 392 terrestrial devices if at all.</p><p>Possible values: 0, 1, LNA_AUTO</p><p>0, LNA off</p><p>1, LNA on</p><p>use the special macro LNA_AUTO to set LNA auto</p></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="frontend-stat-properties"></a>Frontend statistics indicators</h3></div></div></div><div class="toc"><dl class="toc"><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-STAT-SIGNAL-STRENGTH"><code class="constant">DTV_STAT_SIGNAL_STRENGTH</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-STAT-CNR"><code class="constant">DTV_STAT_CNR</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-STAT-PRE-ERROR-BIT-COUNT"><code class="constant">DTV_STAT_PRE_ERROR_BIT_COUNT</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-STAT-PRE-TOTAL-BIT-COUNT"><code class="constant">DTV_STAT_PRE_TOTAL_BIT_COUNT</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-STAT-POST-ERROR-BIT-COUNT"><code class="constant">DTV_STAT_POST_ERROR_BIT_COUNT</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-STAT-POST-TOTAL-BIT-COUNT"><code class="constant">DTV_STAT_POST_TOTAL_BIT_COUNT</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-STAT-ERROR-BLOCK-COUNT"><code class="constant">DTV_STAT_ERROR_BLOCK_COUNT</code></a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#DTV-STAT-TOTAL-BLOCK-COUNT"><code class="constant">DTV-STAT_TOTAL_BLOCK_COUNT</code></a></span></dt></dl></div><p>The values are returned via <code class="constant">dtv_property.stat</code>. 393 If the property is supported, <code class="constant">dtv_property.stat.len</code> is bigger than zero.</p><p>For most delivery systems, <code class="constant">dtv_property.stat.len</code> 394 will be 1 if the stats is supported, and the properties will 395 return a single value for each parameter.</p><p>It should be noticed, however, that new OFDM delivery systems 396 like ISDB can use different modulation types for each group of 397 carriers. On such standards, up to 3 groups of statistics can be 398 provided, and <code class="constant">dtv_property.stat.len</code> is updated 399 to reflect the "global" metrics, plus one metric per each carrier 400 group (called "layer" on ISDB).</p><p>So, in order to be consistent with other delivery systems, the first 401 value at <a class="link" href="FE_GET_SET_PROPERTY.html#dtv-stats" title="DTV stats type"><code class="constant">dtv_property.stat.dtv_stats</code></a> 402 array refers to the global metric. The other elements of the array 403 represent each layer, starting from layer A(index 1), 404 layer B (index 2) and so on.</p><p>The number of filled elements are stored at <code class="constant">dtv_property.stat.len</code>.</p><p>Each element of the <code class="constant">dtv_property.stat.dtv_stats</code> array consists on two elements:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: opencircle; "><li class="listitem" style="list-style-type: circle"><p><code class="constant">svalue</code> or <code class="constant">uvalue</code>, where 405 <code class="constant">svalue</code> is for signed values of the measure (dB measures) 406 and <code class="constant">uvalue</code> is for unsigned values (counters, relative scale)</p></li><li class="listitem" style="list-style-type: circle"><p><code class="constant">scale</code> - Scale for the value. It can be:</p><div class="itemizedlist"><a name="fecap-scale-params"></a><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p><code class="constant">FE_SCALE_NOT_AVAILABLE</code> - The parameter is supported by the frontend, but it was not possible to collect it (could be a transitory or permanent condition)</p></li><li class="listitem" style="list-style-type: disc"><p><code class="constant">FE_SCALE_DECIBEL</code> - parameter is a signed value, measured in 1/1000 dB</p></li><li class="listitem" style="list-style-type: disc"><p><code class="constant">FE_SCALE_RELATIVE</code> - parameter is a unsigned value, where 0 means 0% and 65535 means 100%.</p></li><li class="listitem" style="list-style-type: disc"><p><code class="constant">FE_SCALE_COUNTER</code> - parameter is a unsigned value that counts the occurrence of an event, like bit error, block error, or lapsed time.</p></li></ul></div></li></ul></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-STAT-SIGNAL-STRENGTH"></a><code class="constant">DTV_STAT_SIGNAL_STRENGTH</code></h4></div></div></div><p>Indicates the signal strength level at the analog part of the tuner or of the demod.</p><p>Possible scales for this metric are:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p><code class="constant">FE_SCALE_NOT_AVAILABLE</code> - it failed to measure it, or the measurement was not complete yet.</p></li><li class="listitem" style="list-style-type: disc"><p><code class="constant">FE_SCALE_DECIBEL</code> - signal strength is in 0.0001 dBm units, power measured in miliwatts. This value is generally negative.</p></li><li class="listitem" style="list-style-type: disc"><p><code class="constant">FE_SCALE_RELATIVE</code> - The frontend provides a 0% to 100% measurement for power (actually, 0 to 65535).</p></li></ul></div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-STAT-CNR"></a><code class="constant">DTV_STAT_CNR</code></h4></div></div></div><p>Indicates the Signal to Noise ratio for the main carrier.</p><p>Possible scales for this metric are:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p><code class="constant">FE_SCALE_NOT_AVAILABLE</code> - it failed to measure it, or the measurement was not complete yet.</p></li><li class="listitem" style="list-style-type: disc"><p><code class="constant">FE_SCALE_DECIBEL</code> - Signal/Noise ratio is in 0.0001 dB units.</p></li><li class="listitem" style="list-style-type: disc"><p><code class="constant">FE_SCALE_RELATIVE</code> - The frontend provides a 0% to 100% measurement for Signal/Noise (actually, 0 to 65535).</p></li></ul></div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-STAT-PRE-ERROR-BIT-COUNT"></a><code class="constant">DTV_STAT_PRE_ERROR_BIT_COUNT</code></h4></div></div></div><p>Measures the number of bit errors before the forward error correction (FEC) on the inner coding block (before Viterbi, LDPC or other inner code).</p><p>This measure is taken during the same interval as <code class="constant">DTV_STAT_PRE_TOTAL_BIT_COUNT</code>.</p><p>In order to get the BER (Bit Error Rate) measurement, it should be divided by 407 <a class="link" href="FE_GET_SET_PROPERTY.html#DTV-STAT-PRE-TOTAL-BIT-COUNT" title="DTV_STAT_PRE_TOTAL_BIT_COUNT"><code class="constant">DTV_STAT_PRE_TOTAL_BIT_COUNT</code></a>.</p><p>This measurement is monotonically increased, as the frontend gets more bit count measurements. 408 The frontend may reset it when a channel/transponder is tuned.</p><p>Possible scales for this metric are:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p><code class="constant">FE_SCALE_NOT_AVAILABLE</code> - it failed to measure it, or the measurement was not complete yet.</p></li><li class="listitem" style="list-style-type: disc"><p><code class="constant">FE_SCALE_COUNTER</code> - Number of error bits counted before the inner coding.</p></li></ul></div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-STAT-PRE-TOTAL-BIT-COUNT"></a><code class="constant">DTV_STAT_PRE_TOTAL_BIT_COUNT</code></h4></div></div></div><p>Measures the amount of bits received before the inner code block, during the same period as 409 <a class="link" href="FE_GET_SET_PROPERTY.html#DTV-STAT-PRE-ERROR-BIT-COUNT" title="DTV_STAT_PRE_ERROR_BIT_COUNT"><code class="constant">DTV_STAT_PRE_ERROR_BIT_COUNT</code></a> measurement was taken.</p><p>It should be noticed that this measurement can be smaller than the total amount of bits on the transport stream, 410 as the frontend may need to manually restart the measurement, losing some data between each measurement interval.</p><p>This measurement is monotonically increased, as the frontend gets more bit count measurements. 411 The frontend may reset it when a channel/transponder is tuned.</p><p>Possible scales for this metric are:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p><code class="constant">FE_SCALE_NOT_AVAILABLE</code> - it failed to measure it, or the measurement was not complete yet.</p></li><li class="listitem" style="list-style-type: disc"><p><code class="constant">FE_SCALE_COUNTER</code> - Number of bits counted while measuring 412 <a class="link" href="FE_GET_SET_PROPERTY.html#DTV-STAT-PRE-ERROR-BIT-COUNT" title="DTV_STAT_PRE_ERROR_BIT_COUNT"><code class="constant">DTV_STAT_PRE_ERROR_BIT_COUNT</code></a>.</p></li></ul></div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-STAT-POST-ERROR-BIT-COUNT"></a><code class="constant">DTV_STAT_POST_ERROR_BIT_COUNT</code></h4></div></div></div><p>Measures the number of bit errors after the forward error correction (FEC) done by inner code block (after Viterbi, LDPC or other inner code).</p><p>This measure is taken during the same interval as <code class="constant">DTV_STAT_POST_TOTAL_BIT_COUNT</code>.</p><p>In order to get the BER (Bit Error Rate) measurement, it should be divided by 413 <a class="link" href="FE_GET_SET_PROPERTY.html#DTV-STAT-POST-TOTAL-BIT-COUNT" title="DTV_STAT_POST_TOTAL_BIT_COUNT"><code class="constant">DTV_STAT_POST_TOTAL_BIT_COUNT</code></a>.</p><p>This measurement is monotonically increased, as the frontend gets more bit count measurements. 414 The frontend may reset it when a channel/transponder is tuned.</p><p>Possible scales for this metric are:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p><code class="constant">FE_SCALE_NOT_AVAILABLE</code> - it failed to measure it, or the measurement was not complete yet.</p></li><li class="listitem" style="list-style-type: disc"><p><code class="constant">FE_SCALE_COUNTER</code> - Number of error bits counted after the inner coding.</p></li></ul></div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-STAT-POST-TOTAL-BIT-COUNT"></a><code class="constant">DTV_STAT_POST_TOTAL_BIT_COUNT</code></h4></div></div></div><p>Measures the amount of bits received after the inner coding, during the same period as 415 <a class="link" href="FE_GET_SET_PROPERTY.html#DTV-STAT-POST-ERROR-BIT-COUNT" title="DTV_STAT_POST_ERROR_BIT_COUNT"><code class="constant">DTV_STAT_POST_ERROR_BIT_COUNT</code></a> measurement was taken.</p><p>It should be noticed that this measurement can be smaller than the total amount of bits on the transport stream, 416 as the frontend may need to manually restart the measurement, losing some data between each measurement interval.</p><p>This measurement is monotonically increased, as the frontend gets more bit count measurements. 417 The frontend may reset it when a channel/transponder is tuned.</p><p>Possible scales for this metric are:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p><code class="constant">FE_SCALE_NOT_AVAILABLE</code> - it failed to measure it, or the measurement was not complete yet.</p></li><li class="listitem" style="list-style-type: disc"><p><code class="constant">FE_SCALE_COUNTER</code> - Number of bits counted while measuring 418 <a class="link" href="FE_GET_SET_PROPERTY.html#DTV-STAT-POST-ERROR-BIT-COUNT" title="DTV_STAT_POST_ERROR_BIT_COUNT"><code class="constant">DTV_STAT_POST_ERROR_BIT_COUNT</code></a>.</p></li></ul></div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-STAT-ERROR-BLOCK-COUNT"></a><code class="constant">DTV_STAT_ERROR_BLOCK_COUNT</code></h4></div></div></div><p>Measures the number of block errors after the outer forward error correction coding (after Reed-Solomon or other outer code).</p><p>This measurement is monotonically increased, as the frontend gets more bit count measurements. 419 The frontend may reset it when a channel/transponder is tuned.</p><p>Possible scales for this metric are:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p><code class="constant">FE_SCALE_NOT_AVAILABLE</code> - it failed to measure it, or the measurement was not complete yet.</p></li><li class="listitem" style="list-style-type: disc"><p><code class="constant">FE_SCALE_COUNTER</code> - Number of error blocks counted after the outer coding.</p></li></ul></div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="DTV-STAT-TOTAL-BLOCK-COUNT"></a><code class="constant">DTV-STAT_TOTAL_BLOCK_COUNT</code></h4></div></div></div><p>Measures the total number of blocks received during the same period as 420 <a class="link" href="FE_GET_SET_PROPERTY.html#DTV-STAT-ERROR-BLOCK-COUNT" title="DTV_STAT_ERROR_BLOCK_COUNT"><code class="constant">DTV_STAT_ERROR_BLOCK_COUNT</code></a> measurement was taken.</p><p>It can be used to calculate the PER indicator, by dividing 421 <a class="link" href="FE_GET_SET_PROPERTY.html#DTV-STAT-ERROR-BLOCK-COUNT" title="DTV_STAT_ERROR_BLOCK_COUNT"><code class="constant">DTV_STAT_ERROR_BLOCK_COUNT</code></a> 422 by <a class="link" href="FE_GET_SET_PROPERTY.html#DTV-STAT-TOTAL-BLOCK-COUNT" title="DTV-STAT_TOTAL_BLOCK_COUNT"><code class="constant">DTV-STAT-TOTAL-BLOCK-COUNT</code></a>.</p><p>Possible scales for this metric are:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p><code class="constant">FE_SCALE_NOT_AVAILABLE</code> - it failed to measure it, or the measurement was not complete yet.</p></li><li class="listitem" style="list-style-type: disc"><p><code class="constant">FE_SCALE_COUNTER</code> - Number of blocks counted while measuring 423 <a class="link" href="FE_GET_SET_PROPERTY.html#DTV-STAT-ERROR-BLOCK-COUNT" title="DTV_STAT_ERROR_BLOCK_COUNT"><code class="constant">DTV_STAT_ERROR_BLOCK_COUNT</code></a>.</p></li></ul></div></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="frontend-property-terrestrial-systems"></a>Properties used on terrestrial delivery systems</h3></div></div></div><div class="toc"><dl class="toc"><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#dvbt-params">DVB-T delivery system</a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#dvbt2-params">DVB-T2 delivery system</a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#isdbt">ISDB-T delivery system</a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#atsc-params">ATSC delivery system</a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#atscmh-params">ATSC-MH delivery system</a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#dtmb-params">DTMB delivery system</a></span></dt></dl></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="dvbt-params"></a>DVB-T delivery system</h4></div></div></div><p>The following parameters are valid for DVB-T:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: opencircle; "><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-API-VERSION" title="DTV_API_VERSION"><code class="constant">DTV_API_VERSION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-DELIVERY-SYSTEM" title="DTV_DELIVERY_SYSTEM"><code class="constant">DTV_DELIVERY_SYSTEM</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-TUNE" title="DTV_TUNE"><code class="constant">DTV_TUNE</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-CLEAR" title="DTV_CLEAR"><code class="constant">DTV_CLEAR</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-FREQUENCY" title="DTV_FREQUENCY"><code class="constant">DTV_FREQUENCY</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-MODULATION" title="DTV_MODULATION"><code class="constant">DTV_MODULATION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-BANDWIDTH-HZ" title="DTV_BANDWIDTH_HZ"><code class="constant">DTV_BANDWIDTH_HZ</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-INVERSION" title="DTV_INVERSION"><code class="constant">DTV_INVERSION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-CODE-RATE-HP" title="DTV_CODE_RATE_HP"><code class="constant">DTV_CODE_RATE_HP</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-CODE-RATE-LP" title="DTV_CODE_RATE_LP"><code class="constant">DTV_CODE_RATE_LP</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-GUARD-INTERVAL" title="DTV_GUARD_INTERVAL"><code class="constant">DTV_GUARD_INTERVAL</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-TRANSMISSION-MODE" title="DTV_TRANSMISSION_MODE"><code class="constant">DTV_TRANSMISSION_MODE</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-HIERARCHY" title="DTV_HIERARCHY"><code class="constant">DTV_HIERARCHY</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-LNA" title="DTV_LNA"><code class="constant">DTV_LNA</code></a></p></li></ul></div><p>In addition, the <a class="link" href="FE_GET_SET_PROPERTY.html#frontend-stat-properties" title="Frontend statistics indicators">DTV QoS statistics</a> are also valid.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="dvbt2-params"></a>DVB-T2 delivery system</h4></div></div></div><p>DVB-T2 support is currently in the early stages 424 of development, so expect that this section maygrow and become 425 more detailed with time.</p><p>The following parameters are valid for DVB-T2:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: opencircle; "><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-API-VERSION" title="DTV_API_VERSION"><code class="constant">DTV_API_VERSION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-DELIVERY-SYSTEM" title="DTV_DELIVERY_SYSTEM"><code class="constant">DTV_DELIVERY_SYSTEM</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-TUNE" title="DTV_TUNE"><code class="constant">DTV_TUNE</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-CLEAR" title="DTV_CLEAR"><code class="constant">DTV_CLEAR</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-FREQUENCY" title="DTV_FREQUENCY"><code class="constant">DTV_FREQUENCY</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-MODULATION" title="DTV_MODULATION"><code class="constant">DTV_MODULATION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-BANDWIDTH-HZ" title="DTV_BANDWIDTH_HZ"><code class="constant">DTV_BANDWIDTH_HZ</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-INVERSION" title="DTV_INVERSION"><code class="constant">DTV_INVERSION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-CODE-RATE-HP" title="DTV_CODE_RATE_HP"><code class="constant">DTV_CODE_RATE_HP</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-CODE-RATE-LP" title="DTV_CODE_RATE_LP"><code class="constant">DTV_CODE_RATE_LP</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-GUARD-INTERVAL" title="DTV_GUARD_INTERVAL"><code class="constant">DTV_GUARD_INTERVAL</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-TRANSMISSION-MODE" title="DTV_TRANSMISSION_MODE"><code class="constant">DTV_TRANSMISSION_MODE</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-HIERARCHY" title="DTV_HIERARCHY"><code class="constant">DTV_HIERARCHY</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-STREAM-ID" title="DTV_STREAM_ID"><code class="constant">DTV_STREAM_ID</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-LNA" title="DTV_LNA"><code class="constant">DTV_LNA</code></a></p></li></ul></div><p>In addition, the <a class="link" href="FE_GET_SET_PROPERTY.html#frontend-stat-properties" title="Frontend statistics indicators">DTV QoS statistics</a> are also valid.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="isdbt"></a>ISDB-T delivery system</h4></div></div></div><p>This ISDB-T/ISDB-Tsb API extension should reflect all information 426 needed to tune any ISDB-T/ISDB-Tsb hardware. Of course it is possible 427 that some very sophisticated devices won't need certain parameters to 428 tune.</p><p>The information given here should help application writers to know how 429 to handle ISDB-T and ISDB-Tsb hardware using the Linux DVB-API.</p><p>The details given here about ISDB-T and ISDB-Tsb are just enough to 430 basically show the dependencies between the needed parameter values, 431 but surely some information is left out. For more detailed information 432 see the following documents:</p><p>ARIB STD-B31 - "Transmission System for Digital Terrestrial 433 Television Broadcasting" and</p><p>ARIB TR-B14 - "Operational Guidelines for Digital Terrestrial 434 Television Broadcasting".</p><p>In order to understand the ISDB specific parameters, 435 one has to have some knowledge the channel structure in 436 ISDB-T and ISDB-Tsb. I.e. it has to be known to 437 the reader that an ISDB-T channel consists of 13 segments, 438 that it can have up to 3 layer sharing those segments, 439 and things like that.</p><p>The following parameters are valid for ISDB-T:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: opencircle; "><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-API-VERSION" title="DTV_API_VERSION"><code class="constant">DTV_API_VERSION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-DELIVERY-SYSTEM" title="DTV_DELIVERY_SYSTEM"><code class="constant">DTV_DELIVERY_SYSTEM</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-TUNE" title="DTV_TUNE"><code class="constant">DTV_TUNE</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-CLEAR" title="DTV_CLEAR"><code class="constant">DTV_CLEAR</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-FREQUENCY" title="DTV_FREQUENCY"><code class="constant">DTV_FREQUENCY</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-BANDWIDTH-HZ" title="DTV_BANDWIDTH_HZ"><code class="constant">DTV_BANDWIDTH_HZ</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-INVERSION" title="DTV_INVERSION"><code class="constant">DTV_INVERSION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-GUARD-INTERVAL" title="DTV_GUARD_INTERVAL"><code class="constant">DTV_GUARD_INTERVAL</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-TRANSMISSION-MODE" title="DTV_TRANSMISSION_MODE"><code class="constant">DTV_TRANSMISSION_MODE</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-LAYER-ENABLED" title="DTV_ISDBT_LAYER_ENABLED"><code class="constant">DTV_ISDBT_LAYER_ENABLED</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-PARTIAL-RECEPTION" title="DTV_ISDBT_PARTIAL_RECEPTION"><code class="constant">DTV_ISDBT_PARTIAL_RECEPTION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-SOUND-BROADCASTING" title="DTV_ISDBT_SOUND_BROADCASTING"><code class="constant">DTV_ISDBT_SOUND_BROADCASTING</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-SB-SUBCHANNEL-ID" title="DTV_ISDBT_SB_SUBCHANNEL_ID"><code class="constant">DTV_ISDBT_SB_SUBCHANNEL_ID</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-SB-SEGMENT-IDX" title="DTV_ISDBT_SB_SEGMENT_IDX"><code class="constant">DTV_ISDBT_SB_SEGMENT_IDX</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-SB-SEGMENT-COUNT" title="DTV_ISDBT_SB_SEGMENT_COUNT"><code class="constant">DTV_ISDBT_SB_SEGMENT_COUNT</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-LAYER-FEC" title="DTV_ISDBT_LAYER*_FEC"><code class="constant">DTV_ISDBT_LAYERA_FEC</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-LAYER-MODULATION" title="DTV_ISDBT_LAYER*_MODULATION"><code class="constant">DTV_ISDBT_LAYERA_MODULATION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-LAYER-SEGMENT-COUNT" title="DTV_ISDBT_LAYER*_SEGMENT_COUNT"><code class="constant">DTV_ISDBT_LAYERA_SEGMENT_COUNT</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-LAYER-TIME-INTERLEAVING" title="DTV_ISDBT_LAYER*_TIME_INTERLEAVING"><code class="constant">DTV_ISDBT_LAYERA_TIME_INTERLEAVING</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-LAYER-FEC" title="DTV_ISDBT_LAYER*_FEC"><code class="constant">DTV_ISDBT_LAYERB_FEC</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-LAYER-MODULATION" title="DTV_ISDBT_LAYER*_MODULATION"><code class="constant">DTV_ISDBT_LAYERB_MODULATION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-LAYER-SEGMENT-COUNT" title="DTV_ISDBT_LAYER*_SEGMENT_COUNT"><code class="constant">DTV_ISDBT_LAYERB_SEGMENT_COUNT</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-LAYER-TIME-INTERLEAVING" title="DTV_ISDBT_LAYER*_TIME_INTERLEAVING"><code class="constant">DTV_ISDBT_LAYERB_TIME_INTERLEAVING</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-LAYER-FEC" title="DTV_ISDBT_LAYER*_FEC"><code class="constant">DTV_ISDBT_LAYERC_FEC</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-LAYER-MODULATION" title="DTV_ISDBT_LAYER*_MODULATION"><code class="constant">DTV_ISDBT_LAYERC_MODULATION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-LAYER-SEGMENT-COUNT" title="DTV_ISDBT_LAYER*_SEGMENT_COUNT"><code class="constant">DTV_ISDBT_LAYERC_SEGMENT_COUNT</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ISDBT-LAYER-TIME-INTERLEAVING" title="DTV_ISDBT_LAYER*_TIME_INTERLEAVING"><code class="constant">DTV_ISDBT_LAYERC_TIME_INTERLEAVING</code></a></p></li></ul></div><p>In addition, the <a class="link" href="FE_GET_SET_PROPERTY.html#frontend-stat-properties" title="Frontend statistics indicators">DTV QoS statistics</a> are also valid.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="atsc-params"></a>ATSC delivery system</h4></div></div></div><p>The following parameters are valid for ATSC:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: opencircle; "><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-API-VERSION" title="DTV_API_VERSION"><code class="constant">DTV_API_VERSION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-DELIVERY-SYSTEM" title="DTV_DELIVERY_SYSTEM"><code class="constant">DTV_DELIVERY_SYSTEM</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-TUNE" title="DTV_TUNE"><code class="constant">DTV_TUNE</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-CLEAR" title="DTV_CLEAR"><code class="constant">DTV_CLEAR</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-FREQUENCY" title="DTV_FREQUENCY"><code class="constant">DTV_FREQUENCY</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-MODULATION" title="DTV_MODULATION"><code class="constant">DTV_MODULATION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-BANDWIDTH-HZ" title="DTV_BANDWIDTH_HZ"><code class="constant">DTV_BANDWIDTH_HZ</code></a></p></li></ul></div><p>In addition, the <a class="link" href="FE_GET_SET_PROPERTY.html#frontend-stat-properties" title="Frontend statistics indicators">DTV QoS statistics</a> are also valid.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="atscmh-params"></a>ATSC-MH delivery system</h4></div></div></div><p>The following parameters are valid for ATSC-MH:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: opencircle; "><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-API-VERSION" title="DTV_API_VERSION"><code class="constant">DTV_API_VERSION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-DELIVERY-SYSTEM" title="DTV_DELIVERY_SYSTEM"><code class="constant">DTV_DELIVERY_SYSTEM</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-TUNE" title="DTV_TUNE"><code class="constant">DTV_TUNE</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-CLEAR" title="DTV_CLEAR"><code class="constant">DTV_CLEAR</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-FREQUENCY" title="DTV_FREQUENCY"><code class="constant">DTV_FREQUENCY</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-BANDWIDTH-HZ" title="DTV_BANDWIDTH_HZ"><code class="constant">DTV_BANDWIDTH_HZ</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ATSCMH-FIC-VER" title="DTV_ATSCMH_FIC_VER"><code class="constant">DTV_ATSCMH_FIC_VER</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ATSCMH-PARADE-ID" title="DTV_ATSCMH_PARADE_ID"><code class="constant">DTV_ATSCMH_PARADE_ID</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ATSCMH-NOG" title="DTV_ATSCMH_NOG"><code class="constant">DTV_ATSCMH_NOG</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ATSCMH-TNOG" title="DTV_ATSCMH_TNOG"><code class="constant">DTV_ATSCMH_TNOG</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ATSCMH-SGN" title="DTV_ATSCMH_SGN"><code class="constant">DTV_ATSCMH_SGN</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ATSCMH-PRC" title="DTV_ATSCMH_PRC"><code class="constant">DTV_ATSCMH_PRC</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ATSCMH-RS-FRAME-MODE" title="DTV_ATSCMH_RS_FRAME_MODE"><code class="constant">DTV_ATSCMH_RS_FRAME_MODE</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ATSCMH-RS-FRAME-ENSEMBLE" title="DTV_ATSCMH_RS_FRAME_ENSEMBLE"><code class="constant">DTV_ATSCMH_RS_FRAME_ENSEMBLE</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ATSCMH-RS-CODE-MODE-PRI" title="DTV_ATSCMH_RS_CODE_MODE_PRI"><code class="constant">DTV_ATSCMH_RS_CODE_MODE_PRI</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ATSCMH-RS-CODE-MODE-SEC" title="DTV_ATSCMH_RS_CODE_MODE_SEC"><code class="constant">DTV_ATSCMH_RS_CODE_MODE_SEC</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ATSCMH-SCCC-BLOCK-MODE" title="DTV_ATSCMH_SCCC_BLOCK_MODE"><code class="constant">DTV_ATSCMH_SCCC_BLOCK_MODE</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ATSCMH-SCCC-CODE-MODE-A" title="DTV_ATSCMH_SCCC_CODE_MODE_A"><code class="constant">DTV_ATSCMH_SCCC_CODE_MODE_A</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ATSCMH-SCCC-CODE-MODE-B" title="DTV_ATSCMH_SCCC_CODE_MODE_B"><code class="constant">DTV_ATSCMH_SCCC_CODE_MODE_B</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ATSCMH-SCCC-CODE-MODE-C" title="DTV_ATSCMH_SCCC_CODE_MODE_C"><code class="constant">DTV_ATSCMH_SCCC_CODE_MODE_C</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ATSCMH-SCCC-CODE-MODE-D" title="DTV_ATSCMH_SCCC_CODE_MODE_D"><code class="constant">DTV_ATSCMH_SCCC_CODE_MODE_D</code></a></p></li></ul></div><p>In addition, the <a class="link" href="FE_GET_SET_PROPERTY.html#frontend-stat-properties" title="Frontend statistics indicators">DTV QoS statistics</a> are also valid.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="dtmb-params"></a>DTMB delivery system</h4></div></div></div><p>The following parameters are valid for DTMB:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: opencircle; "><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-API-VERSION" title="DTV_API_VERSION"><code class="constant">DTV_API_VERSION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-DELIVERY-SYSTEM" title="DTV_DELIVERY_SYSTEM"><code class="constant">DTV_DELIVERY_SYSTEM</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-TUNE" title="DTV_TUNE"><code class="constant">DTV_TUNE</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-CLEAR" title="DTV_CLEAR"><code class="constant">DTV_CLEAR</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-FREQUENCY" title="DTV_FREQUENCY"><code class="constant">DTV_FREQUENCY</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-MODULATION" title="DTV_MODULATION"><code class="constant">DTV_MODULATION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-BANDWIDTH-HZ" title="DTV_BANDWIDTH_HZ"><code class="constant">DTV_BANDWIDTH_HZ</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-INVERSION" title="DTV_INVERSION"><code class="constant">DTV_INVERSION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-INNER-FEC" title="DTV_INNER_FEC"><code class="constant">DTV_INNER_FEC</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-GUARD-INTERVAL" title="DTV_GUARD_INTERVAL"><code class="constant">DTV_GUARD_INTERVAL</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-TRANSMISSION-MODE" title="DTV_TRANSMISSION_MODE"><code class="constant">DTV_TRANSMISSION_MODE</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-INTERLEAVING" title="DTV_INTERLEAVING"><code class="constant">DTV_INTERLEAVING</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-LNA" title="DTV_LNA"><code class="constant">DTV_LNA</code></a></p></li></ul></div><p>In addition, the <a class="link" href="FE_GET_SET_PROPERTY.html#frontend-stat-properties" title="Frontend statistics indicators">DTV QoS statistics</a> are also valid.</p></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="frontend-property-cable-systems"></a>Properties used on cable delivery systems</h3></div></div></div><div class="toc"><dl class="toc"><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#dvbc-params">DVB-C delivery system</a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#dvbc-annex-b-params">DVB-C Annex B delivery system</a></span></dt></dl></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="dvbc-params"></a>DVB-C delivery system</h4></div></div></div><p>The DVB-C Annex-A is the widely used cable standard. Transmission uses QAM modulation.</p><p>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</p><p>The following parameters are valid for DVB-C Annex A/C:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: opencircle; "><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-API-VERSION" title="DTV_API_VERSION"><code class="constant">DTV_API_VERSION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-DELIVERY-SYSTEM" title="DTV_DELIVERY_SYSTEM"><code class="constant">DTV_DELIVERY_SYSTEM</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-TUNE" title="DTV_TUNE"><code class="constant">DTV_TUNE</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-CLEAR" title="DTV_CLEAR"><code class="constant">DTV_CLEAR</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-FREQUENCY" title="DTV_FREQUENCY"><code class="constant">DTV_FREQUENCY</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-MODULATION" title="DTV_MODULATION"><code class="constant">DTV_MODULATION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-INVERSION" title="DTV_INVERSION"><code class="constant">DTV_INVERSION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-SYMBOL-RATE" title="DTV_SYMBOL_RATE"><code class="constant">DTV_SYMBOL_RATE</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-INNER-FEC" title="DTV_INNER_FEC"><code class="constant">DTV_INNER_FEC</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-LNA" title="DTV_LNA"><code class="constant">DTV_LNA</code></a></p></li></ul></div><p>In addition, the <a class="link" href="FE_GET_SET_PROPERTY.html#frontend-stat-properties" title="Frontend statistics indicators">DTV QoS statistics</a> are also valid.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="dvbc-annex-b-params"></a>DVB-C Annex B delivery system</h4></div></div></div><p>The DVB-C Annex-B is only used on a few Countries like the United States.</p><p>The following parameters are valid for DVB-C Annex B:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: opencircle; "><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-API-VERSION" title="DTV_API_VERSION"><code class="constant">DTV_API_VERSION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-DELIVERY-SYSTEM" title="DTV_DELIVERY_SYSTEM"><code class="constant">DTV_DELIVERY_SYSTEM</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-TUNE" title="DTV_TUNE"><code class="constant">DTV_TUNE</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-CLEAR" title="DTV_CLEAR"><code class="constant">DTV_CLEAR</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-FREQUENCY" title="DTV_FREQUENCY"><code class="constant">DTV_FREQUENCY</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-MODULATION" title="DTV_MODULATION"><code class="constant">DTV_MODULATION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-INVERSION" title="DTV_INVERSION"><code class="constant">DTV_INVERSION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-LNA" title="DTV_LNA"><code class="constant">DTV_LNA</code></a></p></li></ul></div><p>In addition, the <a class="link" href="FE_GET_SET_PROPERTY.html#frontend-stat-properties" title="Frontend statistics indicators">DTV QoS statistics</a> are also valid.</p></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="frontend-property-satellital-systems"></a>Properties used on satellital delivery systems</h3></div></div></div><div class="toc"><dl class="toc"><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#dvbs-params">DVB-S delivery system</a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#dvbs2-params">DVB-S2 delivery system</a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#turbo-params">Turbo code delivery system</a></span></dt><dt><span class="section"><a href="FE_GET_SET_PROPERTY.html#isdbs-params">ISDB-S delivery system</a></span></dt></dl></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="dvbs-params"></a>DVB-S delivery system</h4></div></div></div><p>The following parameters are valid for DVB-S:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: opencircle; "><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-API-VERSION" title="DTV_API_VERSION"><code class="constant">DTV_API_VERSION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-DELIVERY-SYSTEM" title="DTV_DELIVERY_SYSTEM"><code class="constant">DTV_DELIVERY_SYSTEM</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-TUNE" title="DTV_TUNE"><code class="constant">DTV_TUNE</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-CLEAR" title="DTV_CLEAR"><code class="constant">DTV_CLEAR</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-FREQUENCY" title="DTV_FREQUENCY"><code class="constant">DTV_FREQUENCY</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-INVERSION" title="DTV_INVERSION"><code class="constant">DTV_INVERSION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-SYMBOL-RATE" title="DTV_SYMBOL_RATE"><code class="constant">DTV_SYMBOL_RATE</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-INNER-FEC" title="DTV_INNER_FEC"><code class="constant">DTV_INNER_FEC</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-VOLTAGE" title="DTV_VOLTAGE"><code class="constant">DTV_VOLTAGE</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-TONE" title="DTV_TONE"><code class="constant">DTV_TONE</code></a></p></li></ul></div><p>In addition, the <a class="link" href="FE_GET_SET_PROPERTY.html#frontend-stat-properties" title="Frontend statistics indicators">DTV QoS statistics</a> are also valid.</p><p>Future implementations might add those two missing parameters:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: opencircle; "><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-DISEQC-MASTER" title="DTV_DISEQC_MASTER"><code class="constant">DTV_DISEQC_MASTER</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-DISEQC-SLAVE-REPLY" title="DTV_DISEQC_SLAVE_REPLY"><code class="constant">DTV_DISEQC_SLAVE_REPLY</code></a></p></li></ul></div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="dvbs2-params"></a>DVB-S2 delivery system</h4></div></div></div><p>In addition to all parameters valid for DVB-S, DVB-S2 supports the following parameters:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: opencircle; "><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-MODULATION" title="DTV_MODULATION"><code class="constant">DTV_MODULATION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-PILOT" title="DTV_PILOT"><code class="constant">DTV_PILOT</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-ROLLOFF" title="DTV_ROLLOFF"><code class="constant">DTV_ROLLOFF</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-STREAM-ID" title="DTV_STREAM_ID"><code class="constant">DTV_STREAM_ID</code></a></p></li></ul></div><p>In addition, the <a class="link" href="FE_GET_SET_PROPERTY.html#frontend-stat-properties" title="Frontend statistics indicators">DTV QoS statistics</a> are also valid.</p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="turbo-params"></a>Turbo code delivery system</h4></div></div></div><p>In addition to all parameters valid for DVB-S, turbo code supports the following parameters:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: opencircle; "><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-MODULATION" title="DTV_MODULATION"><code class="constant">DTV_MODULATION</code></a></p></li></ul></div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="isdbs-params"></a>ISDB-S delivery system</h4></div></div></div><p>The following parameters are valid for ISDB-S:</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: opencircle; "><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-API-VERSION" title="DTV_API_VERSION"><code class="constant">DTV_API_VERSION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-DELIVERY-SYSTEM" title="DTV_DELIVERY_SYSTEM"><code class="constant">DTV_DELIVERY_SYSTEM</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-TUNE" title="DTV_TUNE"><code class="constant">DTV_TUNE</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-CLEAR" title="DTV_CLEAR"><code class="constant">DTV_CLEAR</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-FREQUENCY" title="DTV_FREQUENCY"><code class="constant">DTV_FREQUENCY</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-INVERSION" title="DTV_INVERSION"><code class="constant">DTV_INVERSION</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-SYMBOL-RATE" title="DTV_SYMBOL_RATE"><code class="constant">DTV_SYMBOL_RATE</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-INNER-FEC" title="DTV_INNER_FEC"><code class="constant">DTV_INNER_FEC</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-VOLTAGE" title="DTV_VOLTAGE"><code class="constant">DTV_VOLTAGE</code></a></p></li><li class="listitem" style="list-style-type: circle"><p><a class="link" href="FE_GET_SET_PROPERTY.html#DTV-STREAM-ID" title="DTV_STREAM_ID"><code class="constant">DTV_STREAM_ID</code></a></p></li></ul></div></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="frontend_fcalls.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="dvb_frontend.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="dvb_demux.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Frontend Function Calls </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 10. DVB Demux Device</td></tr></table></div></body></html> 440