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Mar. 09, 2017
1, check the digital multimeters failure, we should first check and determine the fault phenomenon is common, or with a personality.
2, the minimum DC voltage of the digital multimeter is the basic file of three bit and a half digital multimeter, and most of the rest are expanded on the basis of this.
3, the DC voltage basic file does not return to zero. Is usually due to pressure resistance near the dirty, scrub resistance should be around the back to zero, then the input voltage of 1V DC voltage source calibration.
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