Gustavus Varian Gemini 2000
300 MHz NMR
Refer to complete instructions before operating instrument.
Varian Website: Varian
Commands
su sets up the experiment
ga begins the acquisition
wft monitors the incoming data
aph automatic phasing of spectrum
r1(x.xxp) sets the position of the reference peak which the cursor is on
axis='h' axis in Hz
axis='p' axis in ppm
pl ppf pscale page print a spectrum to the plotter with peaks labelled (ppf) and the scale (pscale)
aa abort acquisition
temp=xx.x Starts the variable temperature controller to heat to xx.x degrees C. (Do not exceed 100 C without changing to Nitrogen purge). Hit su after to initiate
temp='n' Turns the variable temperature controller off. (Turn VT off when investigation is complete)
tempcal('glycol') Place cursors on both ethylene glycol peaks and temperature calibration is given
dscale Display scale on screen
nl Puts cursor on nearest line
dres Indicates width of peak selected
svs('filename') Saves the shims in current directory
rts('filename') Loads the shims from file in current directory
svf('filename') Saves the FID in current directory for further manipulation later
pad = 0, time1, time2, ... Allows data collection at specified times in seconds (time1,...). Data can be displayed by typing ds(1), etc. Very useful for kinetics. Make sure all parameters are set prior to executing (su) this command. Use gain='y' to turn of autogain after it has been set for the first spectrum.
dssa Display all spectra recorded with pad
ds(1) Display first spectrum recorded with pad
gain='y' Turn off autogain.
gain='y' Turn on autogain.
gain? Query value of gain.
Prepared by: Jonathan M. Smith
Updated: November 28, 2001