[linux-dvb] Re: DVB-T signal acquisition time...?

[Ed Wildgoose <ed@wildgooses.com>]

Robert Schlabbach wrote:

> Hi,
>
> has anyone here ever measured the signal acquisition time (time for the
> demodulator to fully lock to a signal after a channel change) on DVB-T? I
> find that with my TDA10045H card and (Windows) driver, it takes over 600ms
> to fully lock to a signal - a bit too long for my taste.
>
> Is that the best the TDA10045H (or even DVB-T) can do, or am I maybe doing
> something wrong? For comparison, the STV0299B can acquire the signal in
> less than 5ms, and the VES1820 typically in less than 50ms. These times are
> negligible compared to the typical MPEG keyframe interval of about 500ms.
> But the DVB-T signal acquisition time is not and significantly delays the
> channel change times... :(
>
>  
Have you compared with the old DVB branch?  I have switched to kernel 
2.6 and am living with the 600ms, but my recollection is that it was 
more like  300-350ms under DVB?


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