ATSC_8VSB Power Level

[clarkj]

Is there a conversion factor to determine average received power level for an ATSC_8VSB DTV off air signal knowing the level of the pilot carrier or the level of the flat top of the data. Currently on my USB-SA44B I am receiving a pilot of -44.8dBm at 536.31MHz (CH25 DTV) and a flat top data level of about -60dBm sweeping from 520/550MHz?
Best Regards
J.Clark

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[Andrew]

Hi Clark,

I’m not familiar with any sort of conversion, but the common way to measure power of a modulated/non-CW signal is to use the channel power measurement. You can enable/configure that in the measurements control panel. When using the SA44B, for the most accurate channel power measurements, disable spur rejection in the File->Settings menu.

Let us know if you have additional questions.

Regards,
Andrew

[clarkj]

Andrew:
Thanks that sounds like exactly what I need. I will check it out and let you know.
BR/J.Clark

[clarkj]

Andrew:
That measurement did the trick, exactly what I needed. Thanks again.
BR/JC

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