Using the Width Selector
Read the following instructions carefully. The example presented may not look like the graph you just created. Focus on the concepts and techniques presented. Specific cases will be discussed later.
FIGURE 13
Width Selector
You will use the Measurement Template just completed and the Width Selector to determine the correct width setting. The Width Selector graphically depicts a single resonant peak. The peak looks similar to a slice of a pie. See Figure 13. At the top of the Selector is a pull tab. When you slide the tab up and down, the width of the pie slice becomes narrower and wider, respectively. The pointers on the sides of the button point to the bandwidth that corresponds to the width of the slice.
Place the Width Selector over the Measurement Template, positioning the center rivet of the Selector over the response peak, as shown in Figure 14. Be sure to align the horizontal lines of the Width Selector with those of the Measurement Template.
FIGURE 14
Placement of the
Bandwidth Selector
Apply pressure to the upper and lower left corners of the Selector using the thumb and forefinger of your left hand. Now gently slide the tab up or down until the adjustable slice most closely fits the response data. See Figure 15.
FIGURE 15
Selector adjusted for the “best fit”
