Errors in Low Current Measurements (2)
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One of the most common causes of error when measuring low currents (<1nA) is offset current, which can come from the test setup or the measuring instrument.
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One of the most common causes of error when measuring low currents (<1nA) is offset current, which can come from the test setup or the measuring instrument.
Remedies
Choose
an electrometer or picoammeter to minimize meter bias current. Meter
bias currents can be greatly reduced by enabling the instrument’s
Current Suppress feature with the input terminals disconnected and the
Zero Check switch open.
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