HP Data Explorer 4 Series - Manual (Page 201)

Adjusting the Baseline
Data Explorer ™ Software User’s Guide 4-29
4
4.7.2 Using Baseline Correction
Description The Baseline Correction feature is a function that corrects for
a curved baseline, including a DC-offset baseline, by
eliminating broad artifacts from the data set.
When to use Baseline-correct if you are analyzing data:
• With a baseline that is not flat, and you are using the
%Base Peak Intensity parameter (intensity-based
thresholding) to screen out noise peaks. For best results,
apply Baseline Correction, then re-detect peaks.
If you use area-based thresholding (%Max Peak Area)
during peak detection, Baseline Correction is not typically
needed. %Max Peak Area compensates for a rising or
falling baseline.
• With a baseline that is not at 0, to improve peak detection
of small peaks.
Correcting the
baseline
To correct the baseline:
1. Display the spectrum of interest.
2. From the Process menu, select Baseline Correction.
The baseline is adjusted, and the trace is displayed
with a BC trace label.
Returning to the
original trace
To return to the original trace, see “Returning to the original
trace” on page 4-4.