Measuring Signal Strength with tuner and software?

  • Thread starter Thread starter Jack
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J

Jack

Hi. Is it possible to measure an incoming video signal strength with just
an onboard tv tuner (with a connected cable system connection) and
associated software?
Thanks. Jack
 
Hi. Is it possible to measure an incoming video signal strength with just
an onboard tv tuner (with a connected cable system connection) and
associated software?
Click to expand...

Is should be. With some minor modification.

The tuner uses a signal (AGC) to adapt it's sensitivity to the
incoming signal strenght. Thus reading the AGC level indicates
the incoming signal level.
It should be possible to use the game I/O to read this signal.

Actually, I am aware of a DIY spectrum meter project that uses
this approach. http://home.planet.nl/~benzandstra/pagina2.html
 
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