6247G/6247C DC Voltage Current Source/Monitor Operation Manual
5.2.5 Measurement Function
5-35
5.2.5.5
Auto Zero Function
The 6247G/6247C has a function for canceling offset drift of the AD converter. This "auto zero function"
periodically 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 execution of the previous auto zero operation and mea-
surement 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. Also, when the source mode is the DC
sweep mode and the trigger mode is set to AUTO, the sweep does not move to the next step during the
auto zero operation even if the period time ends.
Therefore, the time for outputting the base value during pulse generation or the time for outputting the
step source value during sweep is extended. If it is inconvenient, set the auto zero function to OFF.