[linux-dvb] How to gather "Signal Quality" information from DVB drivers

Chun Chung LO cclo at astri.org
Mon Jul 30 09:35:38 CEST 2007


Hi all,

I wonder how I can gather the DVB-T signal quality information from the
status value reported by driver (such as BER, Signal strength, S/N, UNC,
etc).

As I know I cannot simply use S/N as "signal quality" as it is only a
ratio. But how to define "signal quality" of the DVB-T signal ? High
signal strength ? Low BER? Low UNC? Or something else ?

As I need to develop a simple callback to let GUI/application to get a
value of signal quality in percentage. All I know is I have some driver
status reading, but I do not know how to construct a percentage based
DVB-T signal quality.

(My hardware is TD1316 + TDA10046 + SAA7134)

Please help.

Best regards,
Lo Chun Chung (Chung)
ECE-DHT at ASTRI HK.

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