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FMCG/Data Acquisition with LabVIEW Software: Difference between revisions
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FMCG/Data Acquisition with LabVIEW Software (view source)
Revision as of 20:03, 25 August 2016
, 25 August 2016→Data Acquisition
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==Data Acquisition==
# From the '''FPGA Magnetometer.lvproj''' project, under '''Main Programs''', open the '''Magnetometer_16.1_chirp-calibration.vi''' program. The front panel can be somewhat intimidating, but a lot of it is not used. We'll hit on the parts that are necessary to take a measurement.
# In the top left, under '''Y Channel Settings''' are controls for the calibration. Depress the yellow '''Select?''' button under the channels that you wish to measure. The other three inputs will tell the program how large of a chirp signal should be sent to the magnetic field coils, as well as calculate the size of the field in magnetic field units for calibration purposes.
## '''The Amp. (V)''' determines the amplitude of the chirp. This voltage will be output from the FPGA to the current supplies. This voltage must be ''at least'' .02 V for noise reasons. To keep electronic noise down, large SR570 I-V gain is generally used so using too ''large'' of a calibration signal will cause the magnetometer to rail during calibration. Generally I keep this at '''.02 V'''.
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