The digital storage oscilloscope (DSO) has a vital role in measurement practice, since its resourcefulness fits both general purpose aims and requirements of more specific applications. A deep knowledge of DSO operation principles and available features is fundamental for technicians to best exploit the possibilities of the instrument. Operation principles regard digitization, acquisition, processing and visualization of the input waveform and concern a number of issues. For performant DSO digitizing systems, one of the most relevant issues is the calibration of the time-interleaved structure at the very heart of the instrument. Unfortunately, the calibration techniques adopted by the manufacturers are never disclosed in plain form with application notes or demos, and limited information can be read from patents, if available. In this article, the state-of-the-art of DSO technologies is reviewed; a general framework to face the calibration issue in time-interleaved systems, which is based on the generalized sampling theorem, is presented; and the case of some DSOs, which require special calibration approaches, implemented through the analysis of the input-output crosscorrelation of the individual acquisition channels, is discussed. Concluding remarks underline the value of the contribution, that provides a significant example of how more ideal acquisition channels can be realized by the combination of analog circuitry with digital processors.

中文翻译：

---

具有时间交错通道的数字存储示波器的流线校准方法综述

数字存储示波器 (DSO) 在测量实践中起着至关重要的作用，因为它的机智既适合通用目标，也适合更具体应用的要求。对 DSO 操作原理和可用功能的深入了解是技术人员充分利用仪器可能性的基础。操作原理涉及输入波形的数字化、采集、处理和可视化，并涉及许多问题。对于高性能 DSO 数字化系统，最相关的问题之一是仪器核心的时间交错结构的校准。不幸的是，制造商采用的校准技术从未以简单的形式与应用说明或演示一起公开，并且可以从专利中读取有限的信息（如果有）。在本文中，审查 DSO 技术的最新技术；提出了一个基于广义采样定理的解决时间交织系统中校准问题的通用框架；并讨论了一些 DSO 的情况，它们需要特殊的校准方法，通过分析各个采集通道的输入-输出互相关来实现。结束语强调了贡献的价值，它提供了一个重要的例子，说明如何通过模拟电路与数字处理器的组合实现更理想的采集通道。讨论了需要特殊校准方法，通过分析各个采集通道的输入-输出互相关来实现的方法。结束语强调了贡献的价值，它提供了一个重要的例子，说明如何通过模拟电路与数字处理器的组合实现更理想的采集通道。讨论了需要通过分析各个采集通道的输入-输出互相关来实现的特殊校准方法。结束语强调了贡献的价值，它提供了一个重要的例子，说明如何通过模拟电路与数字处理器的组合实现更理想的采集通道。