[linux-dvb] Re: how to determine signal strength under linux ?

[Jan Panteltje <root@panteltje.demon.nl>]

On Thu, 5 Jul 2001, Johannes Stezenbach wrote:

> Adi Pop wrote:
> > 
> > >From: "Martin Hoffmann" <ma.hoff@t-online.de>
> > >is there a way to determine the signal strength of the broadcast ?
> 
> > Here you have an app. called sdb - maybe it helps (I didn't try it myself)
> > http://www.panteltje.demon.nl/satellite/
> > Unfortunately I think that it's working just with the old driver (version <=0.8)  :-(
> 
> The attached piece of code does it with the new API.
> 
> However, the VES1893 data sheet says "NEST[7:0] is the current value
> of the noise power estimation. It gives an estimation of signal quality
> and can be useful to point a dish."
> 
> So you might want to use the FE_READ_SNR ioctl instead of
> FE_READ_SIGNAL_STRENGTH. Or both.
> The scaling factors in my code are derived from Jan Pantelje'sdb, but
> one day the driver might adhere to the docs and give us the
> correct values directly...
> http://www.linuxtv.org/developer/dvb_api/frontend.xml
> 
> 
> Regards,
> Johannes
> 
> -- No attachments (even text) are allowed --
> -- Type: text/plain
> -- File: signalstrength.c
> 
> 
> 
> -- 
> Info:
> To unsubscribe send a mail to listar@linuxtv.org with "unsubscribe linux-dvb" as subject.
> 
I am very happy you ported it to the new API, but there is not attachment.
Where can I find it?
Regards
Jan



-- 
Info:
To unsubscribe send a mail to listar@linuxtv.org with "unsubscribe linux-dvb" as subject.