The Audio Precision SYS-322A System One Dual Domain Audio Tester is a PC-based instrument that simultaneously generates and measures signals across analog and digital domains. It combines independent analog hardware with DSP modules to enable complete characterization of audio devices with A/D converters, D/A converters, and digital signal processing components in a single measurement platform.
## Technical Specifications
**Analog Domain**
• Generator distortion residual: -106 dB
• Generator flatness: ±0.03 dB over 20 kHz bandwidth
• Analyzer residual noise: <1.5 µV (-114 dBu)
• Analyzer flatness: ±0.03 dB
• Analyzer THD+N: -100 dB (0.001%)
• Frequency range: 10 Hz to 204.775 kHz
• Amplitude resolution: 0.005%
• Accuracy — High Accuracy Mode: 0.03%; Standard Mode: 0.5%
• Frequency counter range: DC to 200 MHz
**Digital Domain**
• Interface formats: AES/EBU, SPDIF/EIAJ, optical, parallel, and general-purpose serial
• Serial interface analysis per AES3
• Independent operation from analog hardware
**Measurement Parameters**
• Amplitude, level, ratio, crosstalk, bandpass amplitude, frequency, phase, THD+N
• Optional: IMD and wow & flutter
## Key Features
• Dual independent generator and analyzer—analog and DSP operate concurrently
• FFT spectrum analysis and waveform capture
• Multitone signal generation and analysis (FASTTEST®)
• MLS quasi-anechoic acoustic testing
• Individual harmonic analysis
• Frequency resolution: 0.025 Hz (10–204 Hz), 0.25 Hz (205 Hz–2.04 kHz), 2.5 Hz (2.05–20.4 kHz), 25 Hz (20.5–204 kHz)
## Typical Applications
• A/D and D/A converter characterization
• Audio pre-processing stage analysis before DSP
• DSP component testing and validation
• Digital audio interface compliance and performance measurement
## Compatibility & Integration
Connects via APIB (Audio Precision Interface Bus) card (sold separately) or integrated PC interface.
