Varian UNITY INOVA NMR, Hardware Installation, Page: 34 / 65

5.2 Wideline NMR Tests
01-999044-00 C0501 UNITY INOVA Solids Hardware Installation
33
in a normal, liquids-only NMR spectrometer and should be under the control of
dpwr
as
usual.
Some parameters in the acquisition group may not be displayed in
dg
if they are set to zero.
Be aware of power parameters like
tpwr
,
dpwr
, and pulse lengths. Check their values at
experiment setup!
Solids Cabinet Status Light and Safety Switch Performance
1. Make sure that there is no observe or decoupler output to the probe with the amplifier
output switch in the OFF position.
2. Make sure that rf output is restored when the ON switch is toggled. The status light
goes off when the amplifier output switch is on.
5.2 Wideline NMR Tests
This section procedures for testing the wideline module.
Wideline Solids Test Sample Kit
The wideline solids test sample kit (00-949065-23) consists of the following samples:
Verify the following NMR performance using the 1 M NaCl, 2% D
2
O, 98% H
2
O standard
sample (Part No. 00-969104-03).
Measuring 90° Pulse and System Sensitivity
1. Enter
rtp('/vnmr/stdpar/H2')
to recall parameters.
2. Set up the spectrometer for data acquisition as follows:
nt=1 dm='n' dp='y'
lb=50 gain=0 rof1=30 alfa=0 sw=1e5 np=max fn=65536
3. Enter
su
.
4. Tune the probe to the deuterium resonance frequency (refer to the NMR Probes
Installation manual).
5. Determine the 90° pulse for
2
H. Enter this value for
pw90
.
6. Enter
sw=1e6
. Set the transmitter offset tof such that the deuterium signal resonates
250 kHz from the transmitter frequency. Acquire one transient by entering
ga
.
Display the resultant spectrum in the 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.
7. Set
sw=1e5
.
Set
tof
such that the deuterium signal resonates 25 kHz from the transmitter
frequency. Acquire one transient by typing
ga
. Display the resultant spectra in the
Part No. Description
969104-00 100% malonic acid-d
4
969104-01 100% NaNO
3
969104-03 1 M NaCl, 2% D
2
O, 98% H
2
O