DSD-1A数字立体声码器

详细说明

Belar DSD-1A是一部精密的FM立体声码器。它能依靠数字解调模拟的立体声复合信号来产生48 kHz AES/EBU数字立体声音频。DSD-1A也可以在XLR接口上提供平衡的模拟左，右，左+右，和左-右输出。

技术指标

输入电平                            2.8V- 5.7V P-P 复合

输入阻抗                         100 kohm, 不平衡, BNC 接口

输出:

  数字,左和右                     AES/EBU, 48 kHz

 模拟左，右，左+右，和左-右

   音频                              Active 50 ohm 区别输出

                                 电平: +10 dBm into 600 , XLR 接口

去加重                    平滑, 50 或 75 祍ec (可选)

分离

左到右                        80 dB, 10 Hz to 15 kHz

右到左                        80 dB, 10 Hz to 15 kHz

串扰:

  L + R to L - R (matrix)               80 dB min

  L - R to L + R (matrix)               80 dB min

  L + R to L - R (direct)               90 dB min

  L + R to L - R (direct)               90 dB min

  SCA to L + R                          90 dB min

  SCA to L - R                          90 dB min

  SCA 干扰                               90 dB min

模拟音频输出指标

频率响应,左和右                       ?0.05 dB flat, 50 to 15 kHz

                                        ?0.25 dB 去加重

 信噪比, 带去加重

  左和右                                90 dB

谐波失真                 < 0.01% 50 to 15 kHz

互调失真                               < 0.01%

                                        (SMPTE)

电源                              100-240 VAC, 50-60 Hz