Varian UNITY INOVA NMR, Hardware Installation, Page: 36 / 65

5.2 Wideline NMR Tests
01-999044-00 C0501 UNITY INOVA Solids Hardware Installation
35
Sodium 90° Pulse and Sensitivity Measurement
Use the standard liquid sample(00-969104-03), the same as for
2
H.
1. Enter
rtp('/vnmr/tests/Na23wl')
to recall parameters.
1. Set up the spectrometer for data acquisition as follows:
seqfil='s2pul'
nt=1 sw=1e5 np=max dm='n' dp='y' lb=50 gain=0 rof1=30
alfa=0 fn=65536
.
2. Tune the probe to the sodium resonance frequency (refer to the NMR Probes
Installation Manual).
3. Determine the 90° pulse for
23
Na. Enter this value for
pw90
.
4. Set
tof
to 1 kHz off-resonance.
5. Measure
23
Na sensitivity. Use a spectral noise region of 20 kHz, centered
approximately 10 kHz off-resonance. Refer to Figure 9 for sample spectrum.
Figure 9. Sample Sodium 90° Pulse and Sensitivity Spectrum, 300-MHz System
1000 kHz 500 0
ACQUISITION SAMPLE PROCESSING FLAGS
sfrq 105.800 date Apr 1 lb 50.00 il n
tn Na23 solvent none sb not used in n
at 0.004 file /vnmr/~ gf not used dp y
np 16384 tests/Na23wl awc not used hs nn
sw 2e+06 DECOUPLING lsfid not used
fb 1e+06 dn H1 phfid 90.0
bs not used dof 0 wtfile
ss 0 dm n proc ft SPECIAL
tpwr 57 dmm c fn 65536 temp not used
pw 2.2 dmf 4000 math f
p1 0 homo n
d1 4.000 werr
d2 0 wexp
tof 0 wbs
nt 1 wnt
ct 0