[mythtvnz] BER

[Guy Gibson]

On 10/02/2010, at 10:16 PM, Guy Gibson wrote:

> 
> On 10/02/2010, at 9:35 PM, Steve V wrote:
> 
>> 
>> 
>> 
>> 
>> ----- Original Message ----
>>> From: Guy Gibson <ggibson at orcon.net.nz>
>>> To: MythTV in NZ <mythtvnz at lists.linuxnut.co.nz>
>>> Sent: Wed, 10 February, 2010 7:27:20 PM
>>> Subject: [mythtvnz] BER
>>> 
>>> What are people seeing as the BER when using DVB-T.  Especially anyone feeding 
>>> off the Waitaks in Auckland.  Im getting a strength of 68%-70% across the three 
>>> multiplexes and get lock, but BER is showing as 65536 on the OSD which is an 
>>> interesting number.  Im using a nova-T 500 so before I start pulling RF cable 
>>> apart I thought I'd check.  Oh and yes there is still some frame tearing with 
>>> panning shots and has been the odd bit of pixilation - also matches with the hot 
>>> humid nights.
>>> 
>>> Guy 
>>> _______________________________________________
>>> mythtvnz mailing list
>>> mythtvnz at lists.linuxnut.co.nz
>>> http://lists.ourshack.com/mailman/listinfo/mythtvnz
>>> Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/
>> 
>> I don't think you have a problem with reception or aerial, I have the same card and much lower signal levels and I get a great picture on all channels.
>> 
>> It seems that the BER reading from the nova-T 500 either means nothing or that 65536 is very low error rate.
>> 
>> Are you using VDPAU, many months ago I was having a lot of trouble with Tv1 and TV2 with pixelation during panning, this was fixed with mods to MythFrontend. I then had lots of trouble with tearing and although I have read that you do not have to disable Composite with the latest Nvidia drivers I found that if Composite was enable I got tearing. disabling Composite fixed the tearing.
>> 
>> 
>> 
>> 
>> _______________________________________________
>> mythtvnz mailing list
>> mythtvnz at lists.linuxnut.co.nz
>> http://lists.ourshack.com/mailman/listinfo/mythtvnz
>> Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/
> 
> yeah I had an idea that the OSD BER was a red hearing. Hence the post.  As for the cards abilities its a GT250 so I think we can rule it out as a processing issue.  Yeah using VPDAU, and must admit I haven't disabled Composite, as like you alluded to I am under the impression its not needed with the latter versions of the Nvidia driver any longer.  I might as well give it a try as its a easy enough change to make.  Am getting pixilation on TV1 and TV2 also 
> 
> 
> 
> _______________________________________________
> mythtvnz mailing list
> mythtvnz at lists.linuxnut.co.nz
> http://lists.ourshack.com/mailman/listinfo/mythtvnz
> Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/
Well even though Im running Nividia 195 drivers I modified xorg.conf to disable composite and picture quality improved considerably.