Frequency and Intensity:                tabulated peak to:    
Instructions:
* The spectrum amplitude at the current mouse position is printed above the spectrum box. The corresponding point on the spectrum is shown in pink.
* The vertical position of the mouse during a click or drag does not matter. While dragging, do not position the mouse on the blue spectrum curve. Only the horizontal position is used.

1. To expand the horizontal scale (two methods):
- Set the Drag to: mode check box to Rescale, and drag using the mouse on the spectrum.
- Enter the plot extremes into the axis label dialog boxes, then click on the tan background.
2. To return the horizontal axis to full scale, click on the Full Scale XY button.
3. To expand the vertical scale (two methods):
- To fill the full y-axis, click on Full Scale Y.
- Enter the plot extremes into the axis label dialog boxes, then click on the tan background.
4. To set the chemical shift reference or IR calibration: enter the reference value into the dialog box (often 0.0 for TMS or 7.26 for CDCl3). Click on the Clear Peaks button to remove previous peak values. Click on the spectrum at the horizonal value for the reference peak. Click on the Shift button.
5. Peak Picking: Click on the Clear Peaks button to remove previous values. Click at the horizontal position of each peak.
6. To integrate, set the Drag to: mode check box to Integrate. Drag across the peak. The integral is printed at the top of the spectrum box. (The integral values are scaled to make the integral under the full spectrum equal to 20.)
7. Automatic peak picking over a narrow range is done by clicking on the Automatic Multiplet Peak Picking button.The displayed region is transfered to the Deconvolution applet.
8. To print the spectrum, pull down the File menu and select Page Setup... Set the Print Background Colors and Images checkbox.

If the cursor stops working for dragging, you have activated the native browser drag and drop mode. Just click the mouse on the tan background and return to the spectrum.

Colby College Chemistry, 1/20/2014