The Spectrum Display Window

This window displays the real or imaginary part of the resulting 2D spectrum (Zoom Mode).

1. 2D Spectrum: The spectrum is shown as contour levels, colored red for positive and blue for negative levels. The axes are in ppm. By default, the range betwen the max and min signal amplitudes in the spectrum is divided into 16 equidistant levels.
   Spectrum Display/View Port Controls:
2. Close: Clicking on this button will close the spectrum;
3. 3D View: Display the current spectrum as a 3D surface (below); only zoomed-in part of the spectrum will be displayed;
4. Reduce by 2: Two-fold reduction in the number of contour levels covering the range {min,max} of signal intensities in the spectrum;
5. Increase by 2: Two-fold increase in the number of contour levels covering the range {min,max} of signal intensities in the spectrum;
6. Full Spectrum: Display full spectrum, no zoom;
7. Zoom/Section: This pull-dowm menu allows switching between the Zoom and Section (see below) modes;
   Also, in the Zoom Mode, the graph can be zoomed in using mouse (the procedure can be repeated multiple times):
   • select one corner of the desired region of the spectrum;
   • press and hold the right mouse button and drag the mouse till it reaches the other corner of the desired region;
   • release mouse button, the zoomed-in window will be displayed automatically.
   
   
8. Pulse Sequence/Spectrum: Indicated are the pulse sequence used to produce the spectrum and whether the Real or Imaginary part of the spectrum is displayed.

Section Mode: This window allows analysis of 1D cross-sections of the 2D spectrum in both F1 and F2 directions.

1. Use mouse to select and click on the desired cross-section point (represented by the crossing thin vertical and horizontal lines).
2. The graph on the bottom displays a 1D cross-section through the spectrum in the F2 direction.
3. The graph on the left displays a 1D cross-section through the spectrum in the F1 direction.

3D-view Mode: This window displays a user-selected region of the 2D spectrum as a 3D surface and allows rotation of this surface to better represent its features.

Before typing this command make sure that the 3D-view panel is selected as the current active window. Here is an example of the faceted surface representation: