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Parallel data processing in a 3-channel integrated time-interval counter

机译:3通道集成时间间隔计数器中的并行数据处理

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In this paper, we discuss an issue of parallel data processing in multichannel time interval counters (TICs). Particularly we analyze this problem within the framework of a 3-channel TIC developed for the international project Legal Time Distribution System (LTDS). The TIC provides the high measurement precision (< 15 ps) and wide range (> 1s) that are obtained by combining reference clock period counting with in-period interpolation. A measurement process consists of three main stages: (1) events registration, (2) data processing and (3) data transfer. In the event registration stage all input events are identified and registered with related unique timestamps based on a consistent time scale. To achieve high measurement precision, the stream of timestamps is then processed using actual transfer characteristics of the TIC and offset values of all measurement channels. We describe the concept of parallel data processing and its implementation in a Spartan-6 FPGA device (XC6SLX75, Xilinx).
机译:在本文中,我们讨论了多通道时间间隔计数器(TIC)中的并行数据处理问题。特别是,我们在为国际项目法律时间分配系统(LTDS)开发的3通道TIC的框架内分析了此问题。通过将参考时钟周期计数与周期内插值相结合,TIC可提供较高的测量精度(<15 ps)和宽范围(> 1s)。测量过程包括三个主要阶段:(1)事件注册,(2)数据处理和(3)数据传输。在事件注册阶段,所有输入事件都将根据一致的时间范围进行识别,并使用相关的唯一时间戳进行注册。为了获得较高的测量精度,然后使用TIC的实际传输特性和所有测量通道的偏移值来处理时间戳流。我们描述了并行数据处理的概念及其在Spartan-6 FPGA器件(XC6SLX75,Xilinx)中的实现。

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