Gating the Decoupler On/Off for Heternuclear Experiments

In many cases, it might be desireable to turn the 1H Decoupler off for some or all of the Pulse Sequence when observing heteronuclei such as 13C, 11B, 31P, 29Si, or 15N.

On Varian instruments, the decoupling can be gated On or Off during different times of the experiment using the parameter "dm" (lowercase).

After setting up your normal acquisition parameters (i.e. [Setup] [Nucleus,Solvent] ), just type dm='nnn', or dm='nny', or dm='ynn' prior to starting the acquisition using the ga or go command.

 

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