Setting up shaped pulses
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* variable '''spnam3''' contains the (string) name of the [[waveform]] file | * variable '''spnam3''' contains the (string) name of the [[waveform]] file | ||
* any power value for channel '''f3''' set before is ignored ([http://qa.nmrwiki.org/question/91/is-value-of-default-channel-power-ignored-in-bruker-systems-for-the-shaped-pulses ???]) and '''sp3''' is used instead | * any power value for channel '''f3''' set before is ignored ([http://qa.nmrwiki.org/question/91/is-value-of-default-channel-power-ignored-in-bruker-systems-for-the-shaped-pulses ???]) and '''sp3''' is used instead | ||
+ | |||
+ | In order to use a shaped pulse in the experiment: | ||
+ | * the waveform may need to be created | ||
+ | * value of '''sp3''' needs to be determined based on the calibration | ||
==Varian== | ==Varian== |
Revision as of 21:58, 29 March 2010
Bruker
On Bruker systems the statement for a shaped pulse is similar to:
(p3:sp3 ph3):f3
Here it is intended to apply to channel f3 (channel 3) a pulse of duration p3 microseconds using phase table ph3.
Usage of :sp3 in the statement implies these things:
- the pulse is shaped
- sp3 is the variable with a value of maximum power for the pulse
- variable spnam3 contains the (string) name of the waveform file
- any power value for channel f3 set before is ignored (???) and sp3 is used instead
In order to use a shaped pulse in the experiment:
- the waveform may need to be created
- value of sp3 needs to be determined based on the calibration
Varian
explain how to set up shaped pulses on Varian systems