download/files/LCQ Deca_Duo Hardware Troubleshooting_8601.pdf
download/files/LCQ Deca_Duo Hardware Troubleshooting_8601.pdf
download/files/LCQ Deca_Duo Hardware Troubleshooting_8601.pdf
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<strong>Troubleshooting</strong> the Ion Trap<br />
◗ Loss of Sensitivity: Clean End caps and ring electrode<br />
◗ High Mass Noise: Clean spacer rings and endcaps.<br />
◗ Lack of sensitivity/resolution/mass stability:<br />
Lack of helium or Air leak<br />
Notes:<br />
Full scan target: -Set to 5X10e7 for best sensitivity<br />
in the positive ion mode.<br />
-For best mass stability results, set to 2X10e7.<br />
-Set (2-3) times less in the negative ion mode.<br />
A typical value of 1X10e7 should be used.<br />
Positive/Negative switching: -Xcalibur allows for separate tune <strong>files</strong>.<br />
Pos/Neg scan segments can be used.<br />
ZoomScan target: -Set to (1-3)X10e6 for compounds with<br />
multiple charge.<br />
-Singly charged compounds will exhibit a<br />
slightly higher target.<br />
-For calibration with Cal Mix, set to 1X10e7.
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