音频分析仪 HP 8903A Audio Analyzer 分析仪特性 失真度: * Fundamental Frequency Range: 20Hz to 100kHz * Residual Distortion and Noise (the higher of): 80 kHz BW: -80dB (0.01%) or 15μV, 20Hz to 20kHz 500kHz BW: -70dB (0.032%) or 45μV, 20Hz to 50kHz; -65dB (0.056%) or 45μV, 50kHz to 100kHz 信噪比 交流电平 Full Range Display: 300V, 30V, 3V 0.3V, 30mV, 3mV, 0.3mV 直流电平 Full Range Display: 300V, 48V, 16V, 4V 频率测量 * Measurement Range: 20Hz to 150kHz * Resolution: 5 digits 标准音频滤波器: 30kHz Low-Pass Filter; 80kHz Low-Pass Filter 可编程低失真源特性: Frequency Range: 20Hz to 100kHz Output Level Range: 0.6mV to 6V open circuit Distortion and Noise (the higher of): 80kHz BW: -80dB (0.01%) or 15μV, 20Hz to 20kHz 500kHz BW: -70dB (0.032%) or 38μV, 20Hz to 50kHz; -65dB (0.056%) or 38μV, 50 to 100kHz Impedance: 600 ohms or 50 ohms