This is the value of the mass axis gain, which is a multiplicative factor used in the equation to calibrate the mass axis.
Minimum | Maximum | Default |
|---|---|---|
-100 | 100 | 0 |
Axis gain adjusts the reported value of a given mass to the correct number. The mass that appears in a report has had a linear correction applied to it. This may be thought of as a calibration curve where the uncorrected mass is plotted along the x axis and the reported mass is plotted along the y axis. The calibration curve is a straight line with a slope that is proportional to the axis gain.
Axis gain has a greater effect on mass assignments at the high end of the mass scale than at the low end.
Click Adjust Mass peaks in the Tune> Manual Tune > MS Section to start an automated program that optimizes both the Axis gain and Axis offset.