Note:
To successfully compensate the offset, a
conductive path between the two elec-
trodes must be present.
Figure 22
Digital Offset Compensation
3.1.6 Digital Offset Compensation
To compensate the voltage offset due to internal opamp offsets or unwanted
electrode potentials, eONE has an internal calibration procedure that can be acti-
vated with the Digital Compensation check box.
The compensation circuit, when activated, sets the Vc to 0 V and adds to it a vari-
able voltage in the range from -128 mV to +128 mV until the current is 0 A (1 mV
step resolution).
In order to successfully compensate the offset, a conductive path must be pre-
sent on the input.
Do NOT compensate the voltage offset with open input.
The compensation need only few seconds. To return to normal operation, UN-
CHECK the Digital Compensation check box.
The compensation value remains stored internally and added to the Vc.
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