A cursor can be used to precisely measure the frequency and amplitude of a particular spectral point. In order to use the cursor proceed as follows:
| • | Press on the button that looks like a cross (see Figure 11(1)) |
| • | Place the mouse over the point where the X and Y cursor lines meet and left-click. This grabs the cursor. |
| • | Drag the cursor to the spectrum curve and frequency of interest. The cursor can jump from one curve to the other. |
| • | Read the X and Y values in the cursor field underneath the graph. |
Zooming and Panning is done the same way as in the Records graphs. See section Graph Controls. The auto-scale button can be pressed or released to obtain an automatic or fixed scale. When the graph is in fixed scale, writing directly in the values of the end-scale markers sets the scale to fit those values, in the X as well as Y scales.
