6240B DC Voltage Current Source/Monitor Operation Manual
5.2.6 Measurement Function
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5.2.6.5 Auto Zero Function
The 6240B has a function for canceling offset drift of the AD converter. This "auto zero function" period-
ically measures the zero point and cancels drift.
When the Auto-Zero function is set to ON, auto zero operation takes place under the following conditions:
• More than 10 seconds have elapsed since the previous auto zero operation and measurement has
been completed.
(However, auto zero operation is not performed when the memory store mode is set to Burst.)
• The integration time is changed.
NOTE: When the auto zero function is enabled in the pulse source mode or pulse sweep mode, the base value
continues to be output until the auto zero operation is complete.
Therefore, the time for outputting the base value is extended temporarily. If it is inconvenient, set the
auto zero function to OFF.
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