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I bought a replacement wireless device. I want to compare it's stats with the old one.
I'm not very familiar with measuring units. Old device showed 60dbm (I think negative value) as signal strength. New device shows 25db. Can I somehow compare them? Perhaps using noise metric of the old device? IIRC noise was 92 or 97. My gut feeling tells me there should be a way because db I imagine should be signal/noise ration so I should be able to compare the two devices.
Anybody more knowledgeable?
Google is. The third link down for me seems pretty useful. In summary: dBm is used as an absolute unit (in reference to 1mW) while dB is relational between two power values. Hopefully someone who knows hardware more can enlighten you as to which power values apply.. – nerdwaller – 2013-09-11T14:12:02.803
@akostadinov - You can't compare the two values ( two entirely differents of measurements ) unless you have additional information. – Ramhound – 2013-09-11T14:23:06.443
I've looked at google already. I am thinking that knowing signal dbm and noise dbm I can compare with
db
. I'm not sure though and I'm not sure what the equation would be. So I hope somebody can tell here for sure. – akostadinov – 2013-09-11T17:46:19.730