292 (327) BRUKER BIOSPIN User Manual Version 002
CRAMPS 2D
Pulse Sequence Diagram 24.2
Figure 24.1. Pulse Sequence Diagram
This sequence is written in such a way that the windowed PMLG-unit is used both
for detection and for the shift evolution along F1. This was done to minimize the
setup requirements. In principle, a windowless sequence can be used as well and
should give better resolution along F1. The power level for a windowless se
-
quence is however usually slightly different from the windowed sequence, so this
needs to be adjusted separately. Likewise, decoupling during t1 could be imple
-
mented using real frequency shifts as in the HETCOR sequence (see "Decou-
pling Techniques" on page 89). If a windowless sequence is incorporated, the
windows d3 must of course be removed. A simple windowless FSLG-unit can be
used, with a shape like lgs-2 or lgs-4 having duration of twice or 4 times the length
of the w-pmlg pulse.
Table 24.1. Acquisition Parameters
Parameter Value Comment
pulprog wpmlg2d. AV 3 instruments only, topspin 2.1 or later.
FnMODE STATES-TPPI. Any other method may be used with appropriate
changes in ppg.
NUC1, NUC2 1H.
To Next Page
Loading...