[linux-dvb] optimized PWM value to AFC 0 Hz -but higher BER thanbefore !

Martin Dauskardt md001 at gmx.de
Mon Nov 7 19:35:43 CET 2005


Does nobody have any idea?

> -----Original Message-----
> From: linux-dvb-bounces at linuxtv.org
> [mailto:linux-dvb-bounces at linuxtv.org]On Behalf Of Martin Dauskardt
> Sent: Saturday, November 05, 2005 3:50 PM
> To: linux-dvb at linuxtv.org
> Subject: [linux-dvb] optimized PWM value to AFC 0 Hz -but higher BER
> thanbefore !
>
>
> I tested some PWM values for my Siemens DVB-C card. The old value
> was 0x12,
> which gave me
> ves1820: AFC (9) -60645Hz
>
> I changend PWM to 0x0c and the result was
> ves1820: AFC (0) 0Hz
>
> But when I checked the BER, I found out that on higher frequencies the BER
> value was higher than with the old PWM.
>
> On 426 MHz I always had a BER of 550-650. With the "optimized"
> (?) PWM I now
> have about 850. But why? And what should I do? What is better: a
> low BER or
> a low AFC value ?
>
>
>
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