[linux-dvb] dvb-apps questions

Luca Olivetti luca at ventoso.org
Wed Jun 6 09:58:10 CEST 2007


En/na Paul ha escrit:

> Q 2. DVB_Frontend_API  document output is in what units (eg Db , % or someother value)
> 
> eg
> Frontend Function Calls
> FE_READ_BER  what units are these

Currend dvb api specification doesn't say anything.
An older version of the specification 
(http://linuxtv.org/downloads/old/linux_dvb_api-20020304.pdf) says that 
the value should be a multiple of 10E-9, so that 2500 means 2.5*10E-6 or 
1 error in 400000 bits.
I don't think that many drivers do the scaling, they just report 
whatever the card tells them.

Bye
-- 
Luca




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