Deviation compensation oscilloscope and trigger circuit

Abstract

The invention discloses a deviation compensation oscilloscope and a trigger circuit. A front interface panel is provided with a power interface, a USB interface and an external trigger channel. The external trigger channel comprises a first signal input channel and a second signal input channel; the first signal input channel or the second signal input channel is externally connected with a probe,and the probe is provided with an X1 gear, an X10 gear, an X100 gear, an X1000 gear and an X10000 gear; a rear interface panel comprises a signal output interface, a grounding port, a logic signal input interface, a probe compensation output interface and a BNC interface. Compensation display waveforms are flat rectangular square waves without burrs and recesses, so that signals can be measured accurately, and the problem that an oscilloscope is triggered by mistake due to the fact that an external trigger channel is loaded with four types of trigger modes is solved.

Description

technical field [0001] The invention relates to the technical field of measurement, in particular to an offset compensation oscilloscope and a trigger circuit. Background technique [0002] An oscilloscope is an instrument used to measure the shape of alternating current or pulsed current waves. It is composed of a tube amplifier, a scanning oscillator, and a cathode ray tube. In addition to observing the waveform of the current, it can also measure the frequency and voltage intensity. All periodic physical processes can be observed with an oscilloscope; [0003] At present, the oscilloscope is connected with an external probe to facilitate measurement. On the one hand, when the external probe is used for measurement, the transmission line transmission of the probe will have a certain impact on the accuracy of the measurement signal. Compensation can easily lead to deviations in the signal measured by the oscilloscope and affect the accuracy of the measurement. [0004] On...

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Problems solved by technology

[0003] At present, the oscilloscope is connected with an external probe to facilitate measurement. On the one hand, when the external probe is used for measurement, the transmission line transmission of the probe will have a certain impact on the accuracy of the measurement signal. Compensation can easily lead to deviations in the signal measured by the oscilloscope and affect the accuracy of the measurement.

[0004] On the other hand, the current oscilloscope trigger method is too selective. If the trigger method is not selected properly, firstly, the oscilloscope may collect excess data to waste resources, or less data may be collected, resulting in missing data. Secondly, the oscilloscope trigger operation is susceptible to interference signals. The interference signal will cause the oscilloscope to trigger falsely, and the data collected by false triggering will greatly affect the real data. Finally, it is impossible to collect some unstable or undisplayed data by manual triggering, and a new trigger is required. way will be erratic or not show data transitions showing meaningful waveforms

[0005]The existing technology can no longer meet the needs of people at the present stage. Based on the current situation, there is an urgent need to reform the existing technology

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