dbuvemf
时间：04-11
整理：3721RD
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What does "dBuVEMF" mean?
I find it from many IC's datasheets. It's a unit of "12dB Sensitivity". I know "dBuV" can be converted to "dBm". But I find that "dBuV" and "dBuVEMF" convert to different dBm values("dBuVEMF" is 6 dB less than "dBuV"). What's the difference between "dBuV" and "dBuVEMF"?
I find it from many IC's datasheets. It's a unit of "12dB Sensitivity". I know "dBuV" can be converted to "dBm". But I find that "dBuV" and "dBuVEMF" convert to different dBm values("dBuVEMF" is 6 dB less than "dBuV"). What's the difference between "dBuV" and "dBuVEMF"?
I found in Internet:
dBuV is referenced to 1 microvolt into 75 Ohm.
dBuVemf (electro-motive force) is referenced to 1 microvolt open circuit.
dBmV commonly used in CATV is referenced to 1 millivolt into 75 Ohm.
dBmW (dBm) is referenced to 1 milliwatt.
Bye
Hi,
Do remember dB is always used to refer to power levels.
B R M
http://www.atis.org/tg2k/all_d.html
http://www.atis.org/tg2k/_db-x-x.html
http://www.atis.org/tg2k/_dbmv.html