具有延迟环定时的任意数字脉冲序列generator
Arbitrary digital pulse sequence generator with delay-loop timing
摘要：
提出了一种时间粒度为单个时钟周期的多通道任意数字序列发生器的设计思想。我们实现了32个通道的发生器，使用低成本的ARM微控制器，并证明其产生的时间延迟范围从几十纳秒到几百秒，12 ns的定时粒度和线性缩放延迟相对于延迟循环迭代次数的能力。该发生器可选择与外部时钟源同步，以在整个时间范围内提供100 ps抖动和整体序列重复性。该发生器是完全可编程的，能够产生高复杂度的数字序列。发生器的概念可以使用不同的微控制器来实现，并应用于控制各种光学，原子和核物理测量设置。
英文摘要：
We propose an idea of an electronic multi-channel arbitrary digital sequence generator with temporal granularity equal to a single clock cycle. We implement the generator with 32 channels using a low-cost ARM microcontroller and demonstrate its capability to produce temporal delays ranging from tens of nanoseconds to hundreds of seconds, with 12 ns timing granularity and linear scaling of delay with respect to the number of delay loop iterations. The generator is optionally synchronized with an external clock source to provide 100 ps jitter and overall sequence repeatability within the whole temporal range. The generator is fully programmable and able to produce digital sequences of high complexity. The concept of the generator can be implemented using different microcontrollers and applied for controlling of various optical, atomic, and nuclear physics measurement setups.
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