A Hybrid Oscilloscope with Channel Synchronization Function
A synchronization function, oscilloscope technology, applied in the direction of instruments, digital variable display, digital variable/waveform display, etc., to ensure accuracy, facilitate state analysis, and facilitate data analysis.
Active Publication Date: 2019-02-01
SUZHOU RIGOL PRECISION ELECTRIC TECH
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Problems solved by technology
[0005] As mentioned above, there is a lack of a solution in the prior art that can avoid errors in the collected data due to delays between channels, and at the same time obtain more effective status data
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[0042] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings and specific embodiments.
[0043] In order to solve the problems existing in the prior art, the present invention selects one of the multi-channel input signals of the hybrid oscilloscope as the data clock signal, and samples the multi-channel input signals according to the data clock signal. When the signals of different channels are delayed, It can also ensure the correctness of the sampling data. The reason is that both the data clock signal and the input signal obtained by the above method are synchronized with the clock of the external system under test, and have a correct timing relationship between them. Therefore, in the case of signal delay due to hardware processing delay and other reasons, the method of the present invention can ensure the accuracy of the collected data.
[0044] refer to Figure 4, is a schematic structural diagram of Emb...
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The invention discloses a hybrid oscilloscope with a channel synchronization function. The hybrid oscilloscope includes an input module, a sampling module, a display module and a control module, wherein the input module is provided with a plurality of input channels and is used for receiving multiple channels of input signals and outputting multiple channels of digital signals, the sampling module is used for the sampling the multiple channels of digital signals and outputting multiple channels of sampling data, the displaying modules is used for outputting multiple channels of waveforms according to the multiple channels of sampling data and display time base, the control module is used for controlling the input module to select one path of signals in the multiple channels of digital signals as one path of signals as data clock signals, and the sampling module samples the multiple channels of digital signals and obtains multiple channels of sampling data. With the hybrid oscilloscope adopted, the accuracy of data acquisition can be ensured under a situation in which delay exists between signals of different channels.
Description
technical field [0001] The invention relates to the field of test and measurement, in particular to a hybrid oscilloscope with a channel synchronization function. Background technique [0002] A mixed oscilloscope (MSO) is a mixed oscilloscope that can observe both analog signals and digital signals, and can be used for timing analysis or state analysis of multi-channel digital signals. [0003] refer to figure 1 , the existing hybrid oscilloscope 1 includes an input module 101, a sampling module 102, a display module 103 and a control module 104, wherein the input module 101 has a plurality of digital input channels for logic analysis, used for receiving multiple input signals, and Output the multi-channel digital signal A; the sampling module 102 uses the system clock of the oscilloscope to sample the multi-channel digital signal A output by the input module 101 to obtain the multi-channel sampling data B; the display module 103 according to the multi-channel sampling dat...
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IPC IPC(8): G01R13/00G01R13/02
Inventor 游宇王悦王铁军李维森
Owner SUZHOU RIGOL PRECISION ELECTRIC TECH