詳細(xì)說(shuō)明 供應(yīng)樂(lè)聲AVT-50(VP-7650A)視頻音頻分析儀 OutputchannelOutputchannel OutputchannelOutputchannel L R/L/R Frequency RCspotoscillatorRCspotoscillator Frequency 1kHzOption120Hzto20kHzOption120Hzto20kHz Accuracy ±3%±3% DDS Frequency 20Hzto20kHz20Hzto20kHz Resolution 0.1Hz: 2kHz0.1Hz: 2kHz1Hz:2kHz1Hz:2kHz Accuracy ±5x10-5±5x10-5 OutputlevelOutputlevel Settingrange/ResolutionSettingrange/Resolution Range1:0.26to2.55V[rms]/10mV[rms]Range1:0.26to2.55V[rms]/10mV[rms]Range2:26to255mV[rms]/1mV[rms](Openend)Range2:26to255mV[rms]/1mV[rms](Openend)Range3:1to25.5mV[rms]/0.1mV[rms](Openend)Range3:1to25.5mV[rms]/0.1mV[rms](Openend) Accuracy ±0.5dB(Output:0.26to2.55mV[rms])±1dB(Output:1.0to255mV[rms])±0.5dB(Output:0.26to2.55mV[rms])±1dB(Output:1.0to255mV[rms]) Unit V[rms]/mV[rms]/dBV/dBmV[rms]/mV[rms]/dBV/dBm ResidualnoiseResidualnoise ≤10μV[rms]20kHzBW≤50μV[rms]80kHzBW≤10μV[rms]20kHzBW≤50μV[rms]80kHzBW Flatness RCspotoscillatorRCspotoscillator ±0.5dB(AFlevel:2V[rms]REF:1kHz)±0.5dB(AFlevel:2V[rms]REF:1kHz) DDS ±0.2dB(AFlevel:2V[rms]REF:1kHz)±0.2dB(AFlevel:2V[rms]REF:1kHz) Distortion RCspotoscillatorRCspotoscillator ≤0.001%(2V[rms],1kHz,20kHzBW)≤0.001%(2V[rms],1kHz,20kHzBW)≤0.01%(2V[rms],100Hzto10kHz,80kHzBW)≤0.01%(2V[rms],100Hzto10kHz,80kHzBW)≤0.02%(2V[rms],20Hzto20kHz,300kHzBW)≤0.02%(2V[rms],20Hzto20kHz,300kHzBW) DDS ≤0.01%(2V[rms],1kHz,20kHzBW)≤0.01%(2V[rms],1kHz,20kHzBW) OutputimpedanceOutputimpedance OutputimpedanceOutputimpedance 600±5%600±5%