Varian UNITY INOVA NMR, Hardware Installation, Page: 35 / 65

Chapter 5. Wideline Module Tests
34
UNITY
INOVA Solids Hardware Installation 01-999044-00 C0501
absolute value mode, with
vs=1000
, normalized,
nm
. Confirm that the quadrature
image is less than 1% by height as compared to the main resonance.
8. Set
tof
to 1 kHz off-resonance.
9. Measure
2
H sensitivity. Use a spectral noise region of 20 kHz, centered
approximately 10 kHz off-resonance. Refer to Figure 8 for sample spectrum and to
Table 4 for specifications.
Figure 8. Sample Spectrum, S/N = 249.6, 300-MHz System
1000 kHz
800 700 600 500 400 300 200 100 0
S/N 249.6
ACQUISITION SAMPLE PROCESSING FLAGS
sfrq 61.395 date Apr 1 lb 50.00 il n
tn H2 solvent none sb not used in n
at 0.008 file /vnmr/~ gf not used dp y
np 16384 stdpar/H2 awc not used hs nn
sw 1e+06 DECOUPLING lsfid not used
fb 1e6 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
Table 4. 90° Pulse and Signal-to-Noise Specifications
System Nucleus PW90 Frequency S/N
400 MHz 2H
≤
3.0 µs 61.4 300:1
23Na
≤
3.0 µs 105.8 630:1
300 MHz 2H
≤
2.5 µs 46.1 200:1
23Na
≤
2.5 µs 79.4 475:1
200 MHz 2H
≤
2.2 µs 30.7 110:1
23Na
≤
2.2 µs 52.9 315:1