Gain Region
The Gain Region in an integrated amperometry waveform is a period in which the detector electronics adjust the gain (the ratio of the signal output from the cell to the input of the analog-to-digital converter). If the signal from the cell falls outside the calculated upper or lower limit of the analog-to-digital conversion value, the gain is adjusted to bring the signal back into range.
Keep the following points in mind when selecting a gain region:
If you will be acquiring 2D data only, select a gain region that matches the Integration Interval.
Because 3D data can be reintegrated after acquisition, the actual integration interval is not known before the run and the gain region cannot be set to the integration interval. Instead, select a longer gain region (or more than one), making sure the region encompasses any period that will be used for integration.
Do not include the cleaning portion of a waveform in the gain region. The signal input in this region is very high and the analog-to-digital converter may become saturated, causing noisy data.