Waters GCT Premier Operator's Manual page 293

TDC Settings dialog box parameters: (Continued)
Parameter
Lock Mass
Mass Window +/- The window around the lock mass that is used to look
Low Mass
Cut-Off
Description
When acquiring in centroid mode each spectrum is
corrected by setting the mass of a known peak to an
exact mass entered in this field.
Lock mass correction on page
See also:
The lock mass is customarily determined using
Note:
the Instrument Setup wizard.
Instrument Setup Wizard Lock Mass
See also:
Setup: on page 3-14.
for the peak in the data. Set this value to 0.2 to 0.5.
When selected, enables the low mass cut-off
functionality.
Low Mass Cut-Off on page
See also:
B-16.
The Tune window Settings menu
5-3.
B-15