1

Hello nmr wikier I want to run pulprog h2bcetgpl3 on bruker instrument using adiabiatic shape pulse crp60comp.4 I determine power level sp7 in stdisp for p24 2ms on rga it is warning that d28 is negative how i adjurst this parameter.

thanks for answering in advance

with best regard feroon

asked Sep 20 '11 at 10:03

feroon
21

updated Oct 17 '11 at 10:05

Evgeny Fadeev
5571


2 Answers:
1

It is most likely that the d21 parameter has not been set (this is the proton-proton coupling evolution delay). Typically this would be 22 ms. D28 is calculated from this parameter (d21) so if d21 is zero you will see the error you describe.

link

answered Sep 23 '11 at 04:15

Tim Claridge
51

0

Thanks for replying Tim claridge, I have set d21 as it is in pulseprog[16-22 msec] 22ms and tried on 20ms then 16ms but this is warning that d28 is negative and rga aborated.

link

answered Sep 24 '11 at 10:53

feroon
21

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