6253 DC Voltage Current Source/Monitor Operation Manual
4.2.5 Measurement Function
4-40
3. Measuring at the timing overlapping with the pulse value and the base value
The measured value and the monitor value change depending on the time ratio of the pulse value to
the base value during the measured time. For resistance value display, the resistance value is
calculated by the measured value and the monitor value, and it is not correct.
4.2.5.5 Auto Zero Function
The 6253 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 the previous auto zero operation and measurement has
been completed.
• 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 completed.
Also, when the trigger mode is set to AUTO in the DC sweep mode, setting ON the Auto
Zero prevents the DC sweep to move to the next step until the auto zero operation is
completed even if the period time ends.
Therefore, the time for outputting the base value or step source value for sweep is
extended temporarily. If it is inconvenient, set the Auto Zero function to OFF.
Tp
Base value
Pulse value
Base value
Measurement
Pulse source
Td
To Next Page
