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From: Dominik Kuhlen <dkuhlen@gmx.net>
To: linux-dvb@linuxtv.org
Subject: Re: [linux-dvb] Need Help with PCTV 452e (USB DVB-S2 device with STB0899)
Date: Fri, 29 Feb 2008 23:25:17 +0100	[thread overview]
Message-ID: <200802292325.17473.dkuhlen@gmx.net> (raw)
In-Reply-To: <200802221106.45303.dkuhlen@gmx.net>


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On Friday 22 February 2008, Dominik Kuhlen wrote:
> Hi,
> 
> -----snip----
> > 
> > Great, that was the trick, now scanning and szap work fine.
> > 
> > Thanks for that hint!
> You're welcome.
> 
> BTW: do you receive broken streams  (symbol rate 22000 or 27500)?
> Currently I get a loss of about 1 TS packet every second or even more (with both symbol rates).
> And there is exactly one TS packet missing (I diffed a TS hexdump).
> If it were the USB controller that drops packets it would be a loss of 5 consecutive TS packets. (940 bytes iso frame size)

I have to correct that statement (I didn't record the whole TS): 
The loss is exactly one USB frame (5 consecutive TS packets in this case)
which happens about every 1000 TS packets (200 USB frames)

I'll do further testings with different frame sizes the next days...

Dominik


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  parent reply	other threads:[~2008-02-29 22:25 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-21 16:40 [linux-dvb] Need Help with PCTV 452e (USB DVB-S2 device with STB0899) Jens Krehbiel-Gräther
2008-02-21 21:08 ` Dominik Kuhlen
2008-02-21 23:29   ` Jens Krehbiel-Gräther
2008-02-22 10:06     ` Dominik Kuhlen
2008-02-22 10:12       ` Jens Krehbiel-Gräther
2008-02-29 22:25       ` Dominik Kuhlen [this message]
2008-02-29 22:52         ` Manu Abraham
2008-03-16 15:03           ` Dominik Kuhlen
2008-03-16 16:08             ` Manu Abraham
2008-03-18 23:22               ` Dominik Kuhlen

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