On 06/10/2009 10:32 AM, Steven Toth wrote:
David Ward wrote:
Comcast checked the outlet on channels 2 (41 dB) and 83 (39 dB). I
looked afterwards and saw that the first of those is analog
programming, but the second just appears as analog noise on my TV
set. (??) I asked them to check a
On 06/09/2009 03:26 PM, Steven Toth wrote:
30db for the top end of ATSC sounds about right.
David, when you ran the windows signal monitor - did it claim QAM64 or
256 when it was reporting 30db?
Steven and Devin,
All the digital signals are 256 QAM.
39 is very good, exceptional.
And did
David Ward wrote:
On 06/09/2009 03:26 PM, Steven Toth wrote:
30db for the top end of ATSC sounds about right.
David, when you ran the windows signal monitor - did it claim QAM64 or
256 when it was reporting 30db?
Steven and Devin,
All the digital signals are 256 QAM.
39 is very good,
Steven,
One thing that is interesting is that he is getting BER/UNC errors
even on ATSC, when he has a 30.2 dB signal. While I agree that the
cable company could be sending a weak signal, 30 dB should be plenty
for ATSC.
Also, it's possible that the playback application/codec in question
David Ward wrote:
On 06/08/2009 04:36 PM, Devin Heitmueller wrote:
On Mon, Jun 8, 2009 at 4:20 PM, Steven Tothst...@kernellabs.com wrote:
We're getting into the realm of 'do you need to amplify and/or debug
your
cable network', and out of the realm of driver development.
Comcast is
On Tue, Jun 9, 2009 at 10:21 AM, Steven Toth st...@kernellabs.com wrote:
I ruled out 30db on ATSC because that sounds incredibly high, I assumed
cable because that would be consistent with the numbers. You could well be
right.
--
Steven Toth - Kernel Labs
http://www.kernellabs.com
I agree
On 06/09/2009 10:24 AM, Steven Toth wrote:
David has called out Comcast to review his installation.
After replacing all the connectors and some cables from the pole all the
way to the outlet, their meter ultimately showed 39-40dB at the outlet.
My card is showing the same SNR values as
On Tue, Jun 9, 2009 at 2:52 PM, David Ward david.w...@gatech.edu wrote:
On 06/09/2009 10:24 AM, Steven Toth wrote:
David has called out Comcast to review his installation.
After replacing all the connectors and some cables from the pole all the way
to the outlet, their meter ultimately
Devin Heitmueller wrote:
On Tue, Jun 9, 2009 at 2:52 PM, David Ward david.w...@gatech.edu wrote:
On 06/09/2009 10:24 AM, Steven Toth wrote:
David has called out Comcast to review his installation.
After replacing all the connectors and some cables from the pole all the way
to the outlet,
On Tue, Jun 9, 2009 at 3:04 PM, Steven Toth st...@kernellabs.com wrote:
40db.
--
Steven Toth - Kernel Labs
http://www.kernellabs.com
Just checked the source. It's 40dB for QAM256, but 30dB for ATSC and
QAM64. Are we sure he's doing QAM256 and not QAM64?
Devin
--
Devin J. Heitmueller -
Devin Heitmueller wrote:
On Tue, Jun 9, 2009 at 3:04 PM, Steven Toth st...@kernellabs.com wrote:
40db.
--
Steven Toth - Kernel Labs
http://www.kernellabs.com
Just checked the source. It's 40dB for QAM256, but 30dB for ATSC and
QAM64. Are we sure he's doing QAM256 and not QAM64?
Devin
Please let me know how I should proceed in solving this. I would be
happy to provide samples of captured video, results from new tests, etc.
When you tune using azap, and you can see UNC and BER values, what is the SNR
value and does it move over the course of 30 seconds?
--
Steven Toth -
On Mon, Jun 8, 2009 at 10:14 AM, Steven Toth st...@kernellabs.com wrote:
Please let me know how I should proceed in solving this. I would be happy
to provide samples of captured video, results from new tests, etc.
When you tune using azap, and you can see UNC and BER values, what is the
SNR
On 06/08/2009 10:17 AM, Devin Heitmueller wrote:
On Mon, Jun 8, 2009 at 10:14 AM, Steven Tothst...@kernellabs.com wrote:
Please let me know how I should proceed in solving this. I would be happy
to provide samples of captured video, results from new tests, etc.
When you tune
David Ward wrote:
On 06/08/2009 10:17 AM, Devin Heitmueller wrote:
On Mon, Jun 8, 2009 at 10:14 AM, Steven Tothst...@kernellabs.com
wrote:
Please let me know how I should proceed in solving this. I would be
happy
to provide samples of captured video, results from new tests, etc.
On 06/08/2009 12:31 PM, Steven Toth wrote:
Your SNR is very low, 0x12c is 30db. I assume you're using digital
cable this is borderline.
Oh okay ... I wasn't sure how to translate those values before.
I like my cable system at home to be atleast 32db (0x140) bare
minimum, it's typically 0x160
David Ward wrote:
On 06/08/2009 12:31 PM, Steven Toth wrote:
Your SNR is very low, 0x12c is 30db. I assume you're using digital
cable this is borderline.
Oh okay ... I wasn't sure how to translate those values before.
I like my cable system at home to be atleast 32db (0x140) bare
minimum,
On 06/08/2009 04:36 PM, Devin Heitmueller wrote:
On Mon, Jun 8, 2009 at 4:20 PM, Steven Tothst...@kernellabs.com wrote:
We're getting into the realm of 'do you need to amplify and/or debug your
cable network', and out of the realm of driver development.
Comcast is coming tomorrow to
On Mon, Jun 8, 2009 at 5:03 PM, David Ward david.w...@gatech.edu wrote:
Devin, I would really really appreciate this. I hesitated to e-mail this
list for several weeks, because I wanted to investigate thoroughly first and
avoid wasting anyone's time as much as possible. I hope you are able to
On Mon, 2009-06-08 at 16:20 -0400, Steven Toth wrote:
Try installing a decent cable amp. Try looking at the MythTV wiki and support
sites for improving your cable network.
If using an amp, be sure you pick one with appropriate gain and noise
figure. Overdriving the mxl5005s with too much
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