Thermonicolet Omnic Software User's Guide 6.1 (PDF) - Charles E ...

Note
You can use Options in the Edit menu to specify the text orientation, font and
number of decimal places for peak area annotations. See “View options” in the
“Edit” chapter for details. ▲
Measuring the area under a peak – Follow these steps:
1. Select the spectrum that contains the peak of interest.
To make it easier to see the peak, you can enlarge the portion of the spectrum
that contains the peak by using the view finder or selection tool.
2. Select the peak area tool.
3. Point in the pane to the X value you want to use as the left limit of the
area to be measured and press and hold down the mouse button.
4. Drag the pointer to a point whose X value you want to use as the right
limit of the area and then release the mouse button.
As you drag the pointer, two vertical lines appear at the limits of the region.
When you release the mouse button, the region between the first point and the
current pointer location is shaded. See the following example.
At the top of each line is a triangular handle that you can drag to the left or
right to change the limit. A baseline is drawn through the lowest data points
(minimum Y values) on either side of the peak.
Two triangular handles on the baseline indicate the baseline endpoints. You
can drag these handles to adjust the position of the endpoints.
OMNIC User’s Guide 35