Simple 1D processing in vnmr

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Revision as of 23:25, 3 March 2008 (edit) Sudipta Majumdar (Talk | contribs) ← Previous diff		Revision as of 23:25, 3 March 2008 (edit) (undo) Sudipta Majumdar (Talk | contribs) Next diff →
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		+	===Open file===
	Open file (type in vnmr command line):		Open file (type in vnmr command line):
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	rt - retrieve, file name does not have to have .fid attached		rt - retrieve, file name does not have to have .fid attached
		+	===Apply simple FT===
	Apply simple processing:		Apply simple processing:
	ft f full vsadj		ft f full vsadj

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Revision as of 23:25, 3 March 2008

Contents 1 Open file 2 Apply simple FT 3 Phase the spectrum 3.1 Autophasing 3.2 Manual phasing 3.3 Fine-tuning phasing

Open file

Open file (type in vnmr command line):

rt('file_name')

rt - retrieve, file name does not have to have .fid attached

Apply simple FT

Apply simple processing:

ft f full vsadj

ft - apply Fourier tranform
f - show full 1D spectral window
full - stretch spectrum on full screen

Phase the spectrum

Autophasing

Try automatic phasing

aph

Manual phasing

If autophasing fails, you have to phase manually.

Click on Main Menu(top row of buttons)->DispMenu(bottom row of buttons->Interactive(bottom row)->Phase(bottom row)

Move cursor to the left part of spectrum, click and hold left mouse button.

Drag mouse up or down to make peaks in left part appear phased, release left mouse button.

Move cursor to the right part of spectrum click and hold right mouse button.Drag mouse up or down to make whole spectrum well phased.

If you still see huge baseline distortion - it is possible that phase parameters lp(left phase) and rp(right phase) are too large. You can check what they are by typing:

lp?
rp?

Normally they should not exceed ~360 (?)

If rp or lp are too large - reset them:

lp=0 rp=0

Fine-tuning phasing