iSpin-NMR
Figure 7: iSpin-NMR test setup.
The iSpin-NMR receiver is very sensitive and can detect signals less than 1
μ
V peak-to-peak. The
maximum
input
that can be received without distortion is approximately 2.5 mV peak-to-peak. Be
sure to attenuate the signal going into the iSpin-NMR so it falls in this range. The RF
output
of the
iSpin-NMR can be as high as 75 W, or 200 V peak-to-peak. This voltage is typically too large for
an oscilloscope, so be sure to attenuate the output properly.
3. Create your own new working directory somewhere outside of the SpinCore directory
and copy the contents of the SpinAPI RadioProcessor Examples to your new working
directory. The SpinCore RadioProcessor directory can be found in the examples folder
located in the SpinAPI folder.
4. To test the
Transmitter
, edit the following parameters in the
singlepulse_nmr_example.bat. This file can be edited by right-clicking and selecting
“edit.”
•
REPETITION_DELAY = 0.5
(seconds)
•
NUMBER_OF_SCANS = 100
•
SPECTROMETER_FREQUENCY = 20.001
(MHz)
•
PULSE_TIME = 10.0
(μs)
•
FNAME =
tx_test
(the output files can be ignored when only testing the transmitter)
•
BLANKING_EN = 1
•
BLANKING_BIT = 2
•
BLANKING_DELAY = 3.0
(ms)
•
AMPLITUDE = 0.1
All other values can be left as default.
5. After entering the parameters, save the singlepulse_nmr_example.bat file, then run it by
double-clicking the file. On the oscilloscope you should see a 20.001 MHz sine wave
2020-07-21
16
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Содержание iSpin-NMR
Страница 1: ...iSpin NMR Owner s Manual SpinCore Technologies Inc http www spincore com...
Страница 4: ...iSpin NMR XIV Document Information 30 2020 07 21 4 www spincore com...
Страница 24: ...iSpin NMR 2020 07 21 24 www spincore com Figure 15 Automatic 90 Degree Pulse Width Determination...
Страница 26: ...iSpin NMR 2020 07 21 26 www spincore com Figure 17 Example of Pulse Width Finder for LabVIEW NMR Interface...
