Waters Micromass ZQ 2000, Руководство оператора, Страница: 58 / 133

Setting Calibration Parameters 58
4
Figure 4-4 Tune Window Displaying Analyser Page Parameters
7. Maximize the signal intensity of the four mass peaks in the Tune window Peak
Display:
a. Turn the probe adjustor knob ( Figure 2-8 ) to adjust the orientation of the probe
relative to the sample cone orifice.
b. Adjust the source parameters from the Tune window’s ES+ Source page. These
include Capillary, Extractor, RF Lens, and Cone voltages, as well as desolvation
and cone gas flows.
8. Adjust the slide adjustors for LM (low mass) Resolution, HM (high mass) Resolution,
and Ion Energy on the Tune window’s Analyser page (
Figure 3-5 ) to obtain a
full-width-at-half-height measurement of 0.4 to 0.6 da.
Note: Make sure you can see all ions and that none are saturated on a gain of 1X.
4.2.2 Instrument Threshold Settings Dialog Box
This dialog box contains parameters that control how the system preprocesses data
before sending the data to a host computer.