INFICON HAPSITE ER Chemical Identification System - Manual (Page 300)

9 - 14
IP
N 07
4-
47
1-
P1
B
HAPSITE ER Operating Manual
9.5.2.2 Background Subtraction Using a Range of Points
Figure 9-12 Using Background Subtraction to Remove a Smaller Peak
Multiple scans in an area, such as a smaller peak on the side of a larger peak, can
complicate the chromatogram. The background can be widened to remove an
area. Refer to
Figure 9-12 .
1 Place the cursor on the triangle with one blue line (B1). Click and hold the LMB
(Left Mouse Button). Drag B1 to the location where the background should be
subtracted.
2 Move the cursor to the tip of the B1 marker. The cursor should change to a
vertical double headed arrow. Holding the LMB while moving the double
headed arrow up, widens or selects a range for the background. Moving it down
narrows the range of the background. The left and right side boundaries can be
manually adjusted using a drag and drop with the LMB.
3 Repeat Step 2 for Background 2 (if desired) using the triangle with two blue
lines (B2).