Re: Power level for shape pulse in composite pulses

From: Dr. Gerhard Eber (Gerhard.Eber@bruker.de)
Date: Tue Mar 07 2006 - 06:15:25 PST

Atom Crystal <crystalatom@yahoo.com> (by way of BUM <bruker-users-mail@purcell.cchem.berkeley.edu>) writes:

> Hi there,
>
> I just want to confirm whether the following is true or not:
>
> When shape pulse is used in cpd program, it is the pl of that channel rather
> than sp of the shape pulse that determines the actual power level used.
>
> Say, for the following pulse segment
>
> d12 pl30:f1
> d8 cpds1:f1
> d13 pl1:f1
>
> assume we have for cpdprg1
>
> 1 2u
> pcpd:sp30:0
> jump to 1
>
>
> Is it true that pl30 rather than sp30 determines the power level actually
> used
> for the shape pulse 30?
>

yes, shapes in cpd use the power level which would be used for square
pulses at this place.

> If it is true, this is different from the way power level is determined for
> shape pulse in pulse program normally.
>
This is true as well, except if you use

        (p11:sp1(currentpower) ph1):f1

or fastshapes (:spf1). 

-- 
Best regards

Gerhard Eber
_____________________________________________________________
Dr. Gerhard Eber		Phone +49-721-5161450
Software Department		FAX   +49-721-5161480
Bruker Biospin GmbH		Email: Gerhard.Eber@bruker.de
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