diff options
| -rw-r--r-- | Documentation/DocBook/media/dvb/dvbproperty.xml | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/Documentation/DocBook/media/dvb/dvbproperty.xml b/Documentation/DocBook/media/dvb/dvbproperty.xml index ffee1fbbc001..049664192bb7 100644 --- a/Documentation/DocBook/media/dvb/dvbproperty.xml +++ b/Documentation/DocBook/media/dvb/dvbproperty.xml @@ -163,14 +163,16 @@ get/set up to 64 properties. The actual meaning of each property is described on <section id="DTV-FREQUENCY"> <title><constant>DTV_FREQUENCY</constant></title> - <para>Central frequency of the channel, in HZ.</para> + <para>Central frequency of the channel.</para> <para>Notes:</para> - <para>1)For ISDB-T, the channels are usually transmitted with an offset of 143kHz. + <para>1)For satellital delivery systems, it is measured in kHz. + For the other ones, it is measured in Hz.</para> + <para>2)For ISDB-T, the channels are usually transmitted with an offset of 143kHz. E.g. a valid frequncy could be 474143 kHz. The stepping is bound to the bandwidth of the channel which is 6MHz.</para> - <para>2)As in ISDB-Tsb the channel consists of only one or three segments the + <para>3)As in ISDB-Tsb the channel consists of only one or three segments the frequency step is 429kHz, 3*429 respectively. As for ISDB-T the central frequency of the channel is expected.</para> </section> |