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 | 0.0 |
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.
You click Adjust Mass peaks in the Tune > Manual Tune > MS Section (LC/MS) to start an automated program that optimizes both the Axis gain and Axis offset.
See Also
Tune > Manual Tune > MS Section (LC/MS)