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Why are the test results unstable with TOS5300 series?

There are a few possible reasons for unstable test results.
First, we need to check if there is an issue with TOS5300 series itself.

How to check:

  1. Perform a test by directly connecting the test probes to an object with a known resistance value.
  2. If the results are stable with the known resistance, TOS5300 series is likely working properly and the issue may be elsewhere.

Note: If the issue persists, TOS5300 series may require calibration or repair.

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