From a34e2a784f8d5b4d26fb3cc378e04296cdc7ad23 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 17 Jan 2012 09:45:48 -0200 Subject: [media] DocBook/dvbproperty.xml: Fix the units for DTV_FREQUENCY The units for DTV_FREQUENCY are kHz for satellital delivery systems (DVB-S/DVB-S2/DVB-TURBO/ISDB-S). Fix it at the API spec. Signed-off-by: Mauro Carvalho Chehab --- Documentation/DocBook/media/dvb/dvbproperty.xml | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'Documentation/DocBook/media/dvb/dvbproperty.xml') 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
<constant>DTV_FREQUENCY</constant> - Central frequency of the channel, in HZ. + Central frequency of the channel. Notes: - 1)For ISDB-T, the channels are usually transmitted with an offset of 143kHz. + 1)For satellital delivery systems, it is measured in kHz. + For the other ones, it is measured in Hz. + 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. - 2)As in ISDB-Tsb the channel consists of only one or three segments the + 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.
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