DSD-1A數字立體聲碼器

詳細說明

Belar DSD-1A是一部精密的FM立體聲碼器。它能依靠數字解調模擬的立體聲復合信號來產生48 kHz AES/EBU數字立體聲音頻。DSD-1A也可以在XLR接口上提供平衡的模擬左，右，左+右，和左-右輸出。

技術指標

輸入電平                            2.8V- 5.7V P-P 復合

輸入阻抗                         100 kohm, 不平衡, BNC 接口

輸出:

  數字,左和右                     AES/EBU, 48 kHz

 模擬左，右，左+右，和左-右

   音頻                              Active 50 ohm 區別輸出

                                 電平: +10 dBm into 600 , XLR 接口

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

分離

左到右                        80 dB, 10 Hz to 15 kHz

右到左                        80 dB, 10 Hz to 15 kHz

串擾:

  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 干擾                               90 dB min

模擬音頻輸出指標

頻率響應,左和右                       ?0.05 dB flat, 50 to 15 kHz

                                        ?0.25 dB 去加重

 信噪比, 帶去加重

  左和右                                90 dB

諧波失真                 < 0.01% 50 to 15 kHz

互調失真                               < 0.01%

                                        (SMPTE)

電源                              100-240 VAC, 50-60 Hz