A device for rapid positioning of trigger points

Abstract

The invention discloses a quick positioning device for trigger point. The quick positioning device for trigger point converts a trigger signal into L-line parallel trigger deserializing data within a data output synchronous clock period through a high-speed deserializer, then the trigger module latches the parallel trigger deserializing data when detecting that the parallel trigger deserializing data jump, and the jumping position of the latched parallel trigger deserializing data is the arrival moment of the trigger signal, namely, the trigger point position. The quick positioning device for the trigger point solves the problem that lots of time is spent in measuring the time in traditional trigger point position, improves indexes, such as waveform capture rate of a parallel structured digital oscilloscope,of the parallel trigger deserializing data collection system greatly, is quite practical in the parallel trigger deserializing data collection system, is low in cost and has good generalization performance.

Description

technical field [0001] The invention belongs to the technical field of data acquisition systems, and more specifically relates to a trigger point rapid positioning device in a data acquisition system with multiple parallel data streams, so as to stabilize the displayed waveform. Background technique [0002] The core of high-speed data acquisition system, especially high-speed digital oscilloscope, is high-speed analog-to-digital converter (ADC). With the continuous development of electronic technology, the sampling rate of high-speed ADC has reached GHz or even tens of GHz, but the speed of the sampling data receiving and processing system is far from such a high speed, such as the real-time processing speed of FPGA Up to 600MHz. Therefore, the sampling data of all high-speed ADCs are output in parallel in the form of multiple low-speed data streams through deceleration, that is, one data synchronization clock corresponds to multiple parallel data streams. In a parallel a...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiency that the traditional time measurement module needs to spend a lot of time for time measurement, and provide a trigger point rapid positioning device to enhance the real-time processing performance of trigger point positioning in the multi-channel parallel data acquisition system, and improve the multi-channel Parallel data acquisition system waveform capture rate while reducing cost

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