Square wave generating device and method for detecting digital-axial angle converter

Abstract

The invention discloses a square wave generation device and method for detecting a digital-to-axial angle converter. The device comprises a shell and a conversion circuit board arranged in the shell,wherein the conversion circuit board is provided with a reference input circuit, a phase shift circuit, a comparison circuit, a rectification circuit, a level driving circuit and a frequency divider circuit which are sequentially connected along a signal input direction, wherein the conversion circuit board is provided with a plurality of contact-pin pins serving as a power supply interface, a signal input port and a signal output port, and the contact-pin pins penetrate out of the shell. According to the invention, a mode of manually dialing a mechanical switch to generate a trigger signal isreplaced by a mode of generating the trigger signal by an all-electronic conversion circuit, and a two-stage phase shift adjustment circuit is adopted, so that the accuracy of 90-degree phase shift signals generated by output square wave signals is ensured, and the accuracy of output setup time testing of the digital-to-axial angle converter is ensured; and the device is easy to use and maintain,and can meet the replacement and test requirements of special imported test equipment for electronic conversion module detection in national laboratories and product inspection departments.

Description

technical field [0001] The invention relates to a square wave generating device, in particular to a square wave generating device and method for detecting a digital-axis-angle converter. Background technique [0002] At present, digital-axis-angle converters are more and more widely used in military products. In the laboratory testing process, it is necessary to provide the highest digital bit input terminal of the converter with a low level when the input reference waveform is at its maximum value. The digital trigger signal that changes to a high level can accurately test the settling time value of the output signal of the digital-axis-angle converter. In the actual test process of the laboratory, the test method is usually to control the transformation of the logic level of the signal by dialing the position of the external button switch, and then use the oscilloscope to capture the output signal of the digital-axis-angle converter from the highest digital The total time...

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Problems solved by technology

[0003] The disadvantage of this test method is that it is difficult to control the level change moment of the output square wave signal, and it cannot guarantee that the square wave signal waveform will change at the maximum value of the reference waveform, which will affect the accuracy of the test results; When the trigger signal is input, it is detected that the output waveform of the digital-axis-angle converter changes from transformation to stability. Sometimes it takes dozens of times to dial the switch to capture the effective transformation waveform. The test efficiency is low and it is not suitable for laboratory products. The batch test; the position of the digital trigger signal generated by dialing the switch and the maximum value of the reference signal are relatively random, and the consistency of the test results is poor

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