插卡式仪器模块：音频分析模块（插卡式）
• 24 位分辨率
• 192 KHz 采样率
• 支持多种模拟音频信号的输入/输出
应用场景
• 音频信号分析：幅值、频率、信噪比、THD、THD+N 等指标
• 模拟音频测试：耳机、麦克风、扬声器测试，串扰测
音频分析仪
| 输入阻抗 | 10 TΩ | 10 TΩ | |
| 输入范围 | 3.5 Vrms | 2 Vrms | |
| 耦合 | DC | AC | |
| 带宽 | 20 kHz | 75 kHz | |
| ADC 分辨率 | 24 Bits | 24 Bits | |
| 采样率 | ≤ 192 kHz | ≤ 192 kHz | |
| THD 测量 | ≤ -106 dB (2 Vrms @ 1 kHz) | ≤ -106 dB (2 Vrms @ 1 kHz) | |
| THD+N 测量 | ≤ -82 dB (2 Vrms @ 1 kHz) | ≤ -83 dB (2 Vrms @ 1 kHz) | |
| 测量精度 | 电压 | 100 mVrms:± (1% of Reading + 0.005% of F.S.) | 100 mVrms:± (1% of Reading + 0.02% of F.S.) |
| 3.5 Vrms: ± (0.3% of Reading + 0.005% of F.S.) | 2 Vrms:± (0.7% of Reading + 0.005% of F.S.) | ||
| 频率 | ± 55 ppm | ± 55 ppm | |
音频发生器
| 输出阻抗 | Low-Z | Low-Z | |
| 输出范围 | 2.3 Vrms | 2.3 Vrms | |
| 耦合 | AC | AC | |
| DAC 分辨率 | 24 Bits | 24 Bits | |
| DAC 刷新率 | ≤ 192 kHz | ≤ 192 kHz | |
| 正弦频率范围 | 10 Hz – 55 kHz | 10 Hz – 50 kHz | |
| THD 输出 | ≤ -104 dB (1 Vrms @ 1 kHz) | ≤ -106 dB (1 Vrms @ 1 kHz) | |
| THD+N 输出 | ≤ -102 dB (1 Vrms @ 1 kHz) | ≤ -102 dB (1 Vrms @ 1 kHz) | |
| 输出精度 | 电压 | ≤ 100 mVrms: ± 0.5% of Reading + 0.005% of F.S. | ≤ 100 mVrms: 0.1% of Reading + 0.001% of F.S. |
| ≤ 2.3 Vrms: ± 0.1% of Reading + 0.005% of F.S. | ≤ 2.3 Vrms: 0.1% of Reading + 0.005% of F.S. | ||
| 频率 | ± 10 ppm | ± 10 ppm | |
