triple resonance on AMX: do's and don'ts

Jose Martins (jose@HNMR.vub.ac.be)
Sun, 03 Jan 1999 12:50:00 +0000

Hi,
Does anybody out there has a working version of an HNCACB experiment
that will run on an AMX/ARX machine (yes, there are still people who try
to do triple resonance on non AVANCE systems...).
We have been trying to setup triple resonance experiments, and as it
turns out, programming these on an AMX requires some knowledge of black
magic.
I believe most of our problems result from the fact that we have up till
know converted pulse programs from the AVANCE library to versions which
would run on an AMX/ARX. We already experienced that one has to be very
carefull in this. For instance, commands which are programmed on the
same line for the AVANCE, must sometimes be placed on separate lines
(and if you don't the program still compiles happily, but you get
terrible spectra). Probably something like this which has eluded us
until now in our version of the HNCACB and is standing in the way of
succesful execution. So I would also welcome any tips from those who
have had the experience of performing these kind of sequences on
AMX/ARX, regarding do's and don't s in programming these sequences...
I will be happy to repost a summary of replies with tricks of the trade
for allt hose interested.
Hope you have some pity for us here, cause we are getting pretty
desperate...

Bye for now

jose

-- 
Jose C. Martins Ph.D
High Resolution NMR Centre (HNMR)
Vrije Universiteit Brussel
Pleinlaan 2, B-1050 Brussel
phone: 32-2-629-33-05
fax  : 32-2-629-32-91
e-mail jose@hnmr.vub.ac.be
http://wwwtw.vub.ac.be/ond/aosc/hnmr/