- 4 VU = 0 dBm
0 VU = + 4 dBm ( 100% 調制百分百 )
3 VU = + 8 dBm ( 滿 VU )
PPM 4 = 0 dBm
PPM 5 = + 4 dBm
PPM 6 = + 8 dBm
PPM 7 = + 12 dBm
PPM 8 = + 16 dBm
0 dBFS = + 24 dBm
0 dBu = - 24 dBFS ( 美規 ) -18 dBFS ( 歐規 ) = - 4 VU = 0 . 775 V
+ 4 dBu = -20 dBFS ( 美規 ) = -14 dBFS ( 歐規 ) = 0 VU = 1 . 228 =1 . 23V