音頻分析儀HP 8903A Audio Analyzer分析儀特性

　　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 20kHz500kHz BW: -70dB (0.032%) or 45µV, 20Hz to 50kHz; -65dB (0.056%) or 45µV, 50kHz to 100kHz 信噪比交流電平Full Range Display: 300V, 30V, 3V 0.3V, 30mV, 3mV, 0.3mV 直流電平Full Range Display: 300V, 48V, 16V, 4V 頻率測量* Measurement Range: 20Hz to 150kHz* Resolution: 5 digits 標準音頻濾波器: 30kHz Low-Pass Filter; 80kHz Low-Pass Filter 可編程低失真源特性:

　　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 20kHz500kHz BW: -70dB (0.032%) or 38µV, 20Hz to 50kHz; -65dB (0.056%) or 38µV, 50 to 100kHz Impedance: 600 ohms or 50 ohms The 8903A Audio Analyzer combines the capabilities of several instruments under microprocessor control to yield accurate and rapid characterizations of audio signals in the range of 20 Hz to 100 kHz. It contains an audio source, measures distortion, SINAD, signal-to-noise ratio, ac and dc level, and counts frequency completely auto-remote control. This combination reduces the number of instruments and complexity of setup needed in many applications.

　　The analyzer is ideally suited for performing audio measurements on transceivers. Along with a suitable signal generator and modulation analyzer, receiver sensitivity and transmitter distortion measurements can be made accurately and rapidly.

　　With the internal source and measurement functions enhanced by microprocessor control, the 8903A has more measurement capability and less display ambiguity than separate instruments. The Audio Analyzer makes true rms measurements for ac level and distortion, thus assuring more accurate measurements of complex waveforms and noise. The ability to perform swept measurements makes it an extremely versatile stand-alone bench instrument for general audio stimulus/responses work. Its programmability over HP-IB is well suited to system applications.