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| Working languages: Italian to Chinese English to Chinese | neo0509chou China Local time: 11:34 CST (GMT+8)
Native in: Chinese | |
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Designed for the latest hard-disk recording systems, the DA-16 'IntelliDAC' offers 16 channels of Apogee quality at an exceptionally affordable price, handling 24-bit D/A conversion at sample rates up to 96 kHz. The converters can source their digital input from either AES/EBU, ADAT optical or TDIF sources, and the unit can sync to word clock or a specified input. ADAT and TDIF inputs are organized into two groups of eight, and channels 1-8 and 9¬16 can have different sources. In addition, the light-pipe inputs accept the Sonorus S/MUX protocol for sample-splitting high-resolution signals into optical interfaces, allowing access to all 16 channels -the first time this protocol has been included on an Apogee converter.
The input sample rate is detected automatically, and a two-level "Lock" indicator shows "wide" (up to +/-150 degrees) and "narrow" (5 degrees) lock. LEDs indicate signal status on each channel, with the LED intensity modulated by the signal level to give an "analog-like" display. The balanced analog outputs are supplied in groups of eight channels on 25-pin D connectors, in keeping with other Apogee D/A conversion systems using these connectors (the pinout is the same as on Tascam systems).
The subtitle "IntelliDAC" relates to the converter’s unique "intelligent" two-stage re-clocking system, a first for Apogee. Apogee converters have traditionally excelled at removing jitter from the incoming clock signal, but for extremely jittery input sources, more control is needed. The DA-16 solves this problem by utilizing two clocks. A fast-responding 'read' clock, with a wide locking range, fills a dedicated FIFO buffer, while an ultra-low-jitter 'write' clock writes the data out of the buffer, and is used to clock the converters.
The advantage of this configuration is that both incoming clock and data are de-jittered. In addition, the system is less sensitive to phase errors between synchronous digital sources. Errors up to plus or minus 150 degrees can be corrected, substantially reducing the chances of glitching, and enabling the DAC to offer superior performance even when the input signal is extremely unstable.
| Translation - Chinese DA-16 'IntelliDAC'为最新的硬盘录音系统而设计,它在一个特别优惠的价格下提供了16通道的Apogee品质,能够处理采样率高达96千赫兹的二十四位D/A转换。转换器能够从AES/EBU, 光学ADAT或TDIF资源中获取数字输入数据,同时该设备还能同步字时钟或者其他一个特定设备。ADAT和TDIF输入分别被安排在两组内,1-8通道和916能够得到不同的源。light-pipe输入支持Sonorus S/MUX协议(将样品缩分高分辨率信号输入光学界面),能够访问16个通道--这是第一个支持此项协议的Apogee转换器。
产品能够自动检测输入信号的采样率,一个两级“锁”指示器能够显示出“宽锁”(最高到+/-150度)和“窄锁”(5度)。LED灯用来指示每个通道上的信号状态,以信号等级改变光的强度来模拟显示。平衡式的模拟输入被设置在两组各8个通道的25-pin D 连接器上,来以此兼容其他的应用这些连接器的Apogee D/A转换系统。(设备上的引脚说明是和Tascam系统一样的)
产品的副标题"IntelliDAC"和转换器独特的"intelligent"两级时钟恢复系统,这是Apogee的首创。Apogee转换器一直以来都在去除输入时钟信号的抖动方面非常出色,但是在对一些输入源的极端抖动信号上需要控制得更加出色。DA-16同时运用了两个时钟,解决了这个问题。一个快速反应的“读取”时钟,装备有范围很宽的锁定带,被专用于FIFO缓冲器;一个抖动率超低的“写入”时钟从缓冲器中写出数据,也为转换器计时。
这种设置的优点是输入的时钟和数据都被de-jitter化了,系统对出现在同步数字信号源中的相位错误就不会特别敏感。正负150度的错误都能被改正,充分降低了故障发生率,也使DAC能够在输入信号非常不稳定的时候还能表现出色。
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Profile last updated Aug 12, 2009 |