Symmetry Based Recoupling
User Manual Version 002 BRUKER BIOSPIN 187 (327)
PL12 as specified Power level decoupling f2 channel and excitation
PL13 ≈pl12, optimize, or
120, fast spinning
Power level decoupling f2 channel during cw or cwlg decoupling
P3 Excitation pulse f2 channel
PCPD2 Decoupler pulse length f2 channel (
1
H) TPPM
P15 Contact pulse – first contact
D1 Recycle delay
CNST20 Spin nutation frequency at PL13 for cwlg decoupling
L0 for 0.5-10 msec
(„mix“ in ased)
Use multiples of 5, 7, or 16 (spc5, pc7, sc14) for full phase cycle.
SPNAM0 Ramp for 1
st
CP step; e.g. ramp: 80 – 100%
SP0 Power level for proton contact pulse
CPDPRG2 SPINAL64 SPINAL64 decoupling
CPDPRG1 cwlg To avoid HH contacts during DQ-generation, reconversion
NS 4-32 Number of scans (see pulse program phase cycle)
F2 direct
13
C (left column)
TD 1024 or 2048 Number of complex points
SW Sweep width direct dimension, adjust to experimental require-
ments
F1 indirect
13
C (right column)
TD 128 - 512 Number of experiments in indirect dimension
SW see para. 17
above
Sweep width indirect dimension
ND0 1 STATES-TPPI, not required. In TS 2.1
Table 14.2. Acquisition parameters for DQ-SQ correlation experiments using symmetry based recou-
pling sequences
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