6243/44 DC Voltage Current Source/Monitor Operation Manual
4.6.3 Auto-Zero Function
4-33
NOTE: When the measurement auto range is used in the Pulse source and Pulse sweep modes, the follow-
ing conditions are applied:
• When the measurement point is specified as the Base Value, even if the limiter is set sufficiently high,
the limiter may still Operate at the pulse value.
This is because the limiter range is decided by the measurement result obtained with the Base Value,
the limiter value resulted in a relatively small one as one for the pulse value.
• When the measurement point is the pulse value, the limiter may Operate at a Base value due to the
Base Value setting for the same reason as described above.
4.6.3 Auto-Zero Function
The 6243/44 features a function for canceling the offset drift of the AD converter. This “Auto-zero” func-
tion 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 operation is set to Burst-
ON.)
• When the integration time is changed.
NOTE: In the Pulse source mode and the Pulse sweep mode, if the Auto-zero function is engaged, the Base Value
is output until the Auto-zero operation is completed.
Consequently, the base value output time is temporarily extended.
If deemed necessary, set the Auto-zero function to OFF.
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