17
•
Changing the analyzer assembly.
•
Changing the MS configuration.
Adjusting the RF Ramp
Adjusting the RF Ramp
To adjust the RF ramp, do the following:
1. Click RF Ramp Adjustment in the Checks and Adjustments tab.
2. Click
Start
.
3. Use a flathead screwdriver to turn the RF Adjustment screw, inside the front
door of the 4000 MS, either clockwise or counterclockwise until the tuning
display shows a straight line and the intensity is at a minimum. The Status
Bar in the Adjustment Results field should be just below OK.
Adjusting the Calibration Gas
To adjust the calibration gas, do the following:
1. Check the flow of perfluorotributylamine (PFTBA or FC-43) calibration gas
before doing Auto Tune procedures.
2. Click
Cal Gas Adjustment
in the
Checks and Adjustments
tab in Manual
Control.
3. Turn the Cal Gas valve inside the front door of the 4000 MS either clockwise
to decrease the flow or counterclockwise to increase the flow. Adjust the flow
so that the status bar in the Adjustment Results field reads OK.
Summary of Contents for 4000 MS
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