Hi, The attached pctv452e.c works for me without frame drops in DVB-S and DVB-S2. On Friday 29 February 2008, Manu Abraham wrote: > Dominik Kuhlen wrote: > > 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) The problem seems to be wrong initial config parameter set in init_s1_demod table. I copied this table from the mantis 1041 and it seems to be working now. (I should probably check the USB logs and use these values.) The first tuning after powerup/init fails quite often for me but the folllowings are fine even switching from DVB-S to DVB-S2 works like a charm. > Is it really isochronous transfer that the device really uses in it's > default mode ? I guess many vendors prefer bulk transfers for the > default transfer mode ? There's a bulk pipe but it's only used for setup/control afaik. Happy testing, Dominik BTW: why is the mantis development in a separate HG repo? I merged the mantis driver to the multiproto repo and can use the mantis-1041 and pctv452e simultanously :)
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