Baseline Problems Deriving From Xenon Flash Lamp/Trigger Pack Assembly - Agilent Technologies InfinityLab LC Series User Manual

6
Troubleshooting and Diagnostics
Diagnostic Signals
Baseline Problems Deriving from Xenon Flash Lamp/Trigger Pack
Assembly
Problem Description
With the low noise of the Detector, the Xenon flash lamp or the trigger pack
assembly may cause periodic baseline instabilities at the end of lamp life.
Lamp instabilities come in many different forms. The period may vary from a
few seconds to hours.
Problem Verification
Perform the following steps to diagnose whether the lamp is the cause of the
baseline instability:
1 Ensure that the detector has been properly warmed up, see
2 Flush the flow cell with water and start runs without sample injections
3 Use a restriction capillary to remove any influence of the column.
4 If you see instabilities, stop the flow and compare.
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Diagnostic Signals" on page 141.
(blank runs).
a If there are no instabilities, it's detector related and a replacement of the
trigger pack assembly (first) and lamp (second) is required.
b If there are still instabilities, check the system in front of the FLD (for
example for air leaks).
Agilent InfinityLab LC Series 1260 Infinity II FLD User Manual
"Overview of