[mythtv-users] Antenna pointing apps?

Devin Heitmueller dheitmueller at kernellabs.com
Wed Nov 6 19:11:17 UTC 2013


On Wed, Nov 6, 2013 at 2:06 PM, Raymond Wagner <raymond at wagnerrp.com> wrote:
> Just a side note, there is no real standard for the response received
> through that interface.  If the results are actually meaningful, and not
> some arbitrary value, they will only be self-consistent, and cannot be
> compared with results from other tuners.

While this is true in general, all of the ATSC/ClearQAM devices do
return the same units for the SNR field (since all the demod drivers
used nowadays were written by one of three people who all agreed on a
format).  The field is in 0.1dB increments - so for example a value of
0xff means 25.5 dB.

Devin

-- 
Devin J. Heitmueller - Kernel Labs
http://www.kernellabs.com


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