问题：
What is the purpose of zero check?
答案：
The purpose of zero check is to protect the input FET from overload and to zero the instrument. When zero check is enabled the input of the electrometer is a resistance between about 10 M ohms and 100 M ohms (this depends on the electrometer). Zero check should be enabled when changing conditions on the input circuit, such as changing functions and connections.
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常见问题 ID 72056
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