描述
方案特点
- 低噪声模拟前端
- 高精度采样
- FFT 硬件处理
- 使用 XLR/BNC 接口进行模拟音频测量
- 使用 PDM/TDM 接口进行数字音频测量
Basics
| Channel | 模拟输入 | 2× Unbalanced + 2× Balanced |
| Analog Output | 2× Unbalanced + 2× Balanced | |
| Digital PDM | 1× Input + 1× Output | |
| Digital TDM | 1× Input + 1× Output |
| Digital I/O Output | 8 Bits |
Audio Analyzer (Analog Input)
| Input Impedance | 10 TΩ | |
| Input Range | 2.3 Vrms | |
| Bandwidth | 20 kHz | |
| ADC Resolution | 24 Bits | |
| 采样率 | ≤ 192 KHz | |
| Measurement | THD | -106 dB (1 Vrms @ 1 kHz Sine Wave) |
| THD+N | -92 dB (1 Vrms @ 1 kHz Sine Wave) | |
| Digital THD | -106 dB (@ 1 kHz Sine Wave) | |
| Digital THD+N | -83 dB (@ 1 kHz Sine Wave) | |
| Measurement Accuracy | Voltage | ≤ 100 mVrms: ± (1% of Reading + 0.005% of Range) |
| ≤ 2.3 Vrms: ± (0.3% of Reading + 0.005% of Range) | ||
| 频率 | ± 55 ppm | |
Audio Generator (Analog Output)
| Output Impedance | Low-Z | |
| Output Range | 2.3 Vrms | |
| DAC Refresh Rate | ≤ 192 kHz | |
| DAC Resolution | 24 Bits | |
| Sine Frequency Range | 10 Hz – 55 kHz | |
| THD Output | -104 dB (1 Vrms @ 1 kHz) | |
| THD+N Output | -102 dB (1 Vrms @ 1 kHz) | |
| 输出精度 | Voltage | ≤ 100 mVrms: ± (0.5% of Reading + 0.005% of Range) |
| ≤ 2.3 Vrms: ± (0.1% of Reading + 0.005% of Range) | ||
| 频率 | ± 10 ppm | |
Digital Audio Analyzer
| PDM | FSYNC Frequency | 48 kHz |
| Data Rate | 6.144 MHz | |
| Data Bits | 32 Bits | |
| TDM | Channel | 8× |
| Data Bits | 32 Bits | |
| Clock Rate | 12.288 MHz |
