====== DVB (digital video broadcast) plugin ======

This plugin allows reading the status of a DVB card.

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===== Functions =====

|dvb(key)|gather status from the DVB frontend and return certain values|

Valid keys are:

|signal_strength|signal strength|
|snr|signal/noise ratio|
|ber|block error rate|
|ucb|uncorrected blocks|

Note that this plugin always opens the first frontend on the //first// DVB card (which is ///dev/dvb/adapter0/frontend//).

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===== Example =====

<code>
Widget DVB {
    class      'Text'
    expression  dvb('signal_strength')*100
    prefix     'DVB'
    width       9
    precision   1
    align      'R'
    update      500
}

Widget DVB_Bar {
    class       'Bar'
    expression   dvb('signal_strength')
    expression2  dvb('snr')
    min          0
    max          1
    length       10
    direction   'E'
    update       200
}
</code>


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