音频综测仪

音频综测仪

应用场景

  • 研发实验室和自动化产线测试中的音频信号分析
  • 模拟音频测试:耳机、麦克风、扬声器测试,串扰测试
  • 数字音频测试:平板电脑、笔记本电脑、可穿戴设备的 PDM/TDM 测试

规格

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 Analog Input 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
Sampling Rate ≤ 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)
Frequency ± 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)
Output Accuracy Voltage ≤ 100 mVrms: ± (0.5% of Reading + 0.005% of Range)
≤ 2.3 Vrms: ± (0.1% of Reading + 0.005% of Range)
Frequency ± 10 ppm

 

Digital Audio Analyzer

PDM FSYNC Frequency 48 kHz
Data Rate 6.144 MHz
Data Bits 32 Bits
TDM Channel
Data Bits 32 Bits
Clock Rate 12.288 MHz