Agilent InfinityLab LC Series 1260 Infinity II FLD User Manual 125
Optimizing the Detector
5
Finding the Best Signal Amplification
FLD Scaling Range and Operating Conditions
When using different FLD
• The signal height of individual G7121 FLD modules may exceed the
recommended signal range 0 – 100 LU. Under certain circumstances this
could lead to clipped peaks.
• Different G7121 FLD modules show different signal heights with identical
methods. This is not a problem in general but could be inconvenient when
operating more than one G7121 FLD in the lab.
Both scaling issues can be resolved. Refer to “Optimize the
PMT-Gain-Level” on page 125.
Optimize the PMT-Gain-Level
Start the PMT-Gain-Test with your operating conditions (used method
parameter, EX-/EM-wavelength, solvent, flow rate, …). The resulting PMT
value will give you the best signal to noise performance with the maximum
usable signal range for this method and this specific instrument. For another
FLD this PMT level may vary (based on the individual PMT-Gain-Test).
The figure below demonstrates the impact of changing the PMT Gain.
To Next Page
Loading...
Need help?
General
