(2)
10log((30×10-3)/(1×10-3))=14.8 [dBm]
(3)
20log((2×10-6)/(1×10-6))=6 [dBμ]
(4)
20log((6×10-3)/1)=−44.4 [dBV]
(5)
3/(2√2)=1.06 [Vrms]
よって,
20log(1.06/1)=0.51 [dBV]
(6)
10(15/20)=5.6 [μVrms]
また,
5.6×10×-6×2√2=15.8 [μVp-p]
(7)
1×10-3×10(-10/10)=0.1×10-3 [W]
V=(P・R)1/2=(0.1×10-3×50)=0.0707 [Vrms]
...電気単位・デシベル表現