电压测量范围 电压:1mV~300V,12档 *0.3mV~100V,12档dB:-80dB~+50dB(0dB=1V) *-90dB~+40dB(0dB=1V)dBm:-80dBm~+52dBm(0dBm=1mW,600Ω)*-90dBm~+40dBm(0dBm=1mW,600Ω)*VT-181E 电压:10μV~300V,16档 (10μV/30μV/100μV/300μV/ (1mV/3mV/10mV/30mV/1mV/3mV/10mV/30mV/100mV/满刻度dB:-120dB~+50dB(0dB=1V) dBm:-120dBm~+52dBm (0dBm=1mW,600Ω)电压:1mV~300V,12档(1mV/3mV/10mV/30mV/100mV/300mV/1V/3V/10V/30V/100V/300V)满刻度dB:-80dB~+50dB(0dB=1V)dBm:-80dBm~+52dBm (0dBm=1mW,600Ω) 电压:1mV~300V,12档(1mV/3V/10mV/30mV/100mV/300mV1V/3V/10V/30V/100V/300V)满刻度 dB:-80dB~+50dB(0dB=1V)dBm:-80dBm~+52dBm (0dBm=1mW,600Ω)电压:0.3mV~100V,12档(0.3mV/1mV/3mV/10mV/30mV/100mV/300mV/1V/3V/10V/30V/100V满刻度dB:-90dB~+40dB(0dB=1V)dBm:-90dBm~+42dBm (0dBm=1mW,600Ω)