The Audio Precision System One SYS222A is a PC-based audio test set that delivers signal generation and analysis across analog, digital, and mixed-signal domains. It combines independent analog hardware generators and analyzers with integrated Digital Signal Processing for high-resolution FFT spectrum analysis, waveform capture, and rapid multitone testing. The concurrent operation of analog and DSP functions makes it ideal for characterizing A/D and D/A converters, analog preprocessing stages, and complete audio signal chains.
## Technical Specifications
**Generator**
• Frequency range: 10 Hz to 204.775 kHz
• Output amplitude (balanced): 0.25 mV to 25.00 Vrms [-70 to +30.17 dBu]
• Output amplitude (unbalanced): 0.25 mV to 12.50 Vrms [-70 to +24.15 dBu]
• Output impedance: Selectable 600 Ω ±1%; 1 Watt (nominally 100 kΩ // 150–200 pF)
• Distortion residual: -106 dB
• Flatness: ±0.03 dB across 20 kHz bandwidth
• Square wave frequency: Up to 20 kHz with 2.5–3.0 µs rise/fall time
**Analyzer**
• Residual noise: 300 kHz
**Frequency Counter**
• Range: 10 Hz to 200 kHz
• Accuracy: ±0.01%
• Resolution: 5 digits
## Key Features
• Multitone signal generation and analysis (FASTTEST®)
• Tone burst, square wave, and noise signal generation
• Analog random and pseudorandom white and pink noise
• Bandpass filtered pink noise capability
• FFT spectrum analysis with waveform capture and display
• Quasi-anechoic acoustic testing via Maximum Length Sequence (MLS)
• Individual harmonic analysis
• Measurements: amplitude, level, ratio, crosstalk, bandpass amplitude, frequency, phase, THD+N
• Optional IMD and Wow & Flutter analysis
## Typical Applications
• A/D and D/A converter characterization
• Audio device stimulus-response testing
• Harmonic and intermodulation distortion analysis
• Acoustic transducer measurement
• Mixed-signal audio circuit validation
## Compatibility & Integration
PC-based platform with concurrent analog and DSP processing for flexible test automation and signal conditioning workflows.
