tom_schmitt
New member
I am working with a local professor to make an opensource proton precession magnetometer and will try to use the audio board.
A proton precession magnetometer is a small NMR. It is used to measure the earths magnetic field. A magnetic field polarizes the spin of protons in water and when it relaxes the proton spin is measured by a coil. The signal is in the micrvolt range. We have a functioning amplifier and filter.
I tried using some SPI ADCs for digitzing and lost patience. I then realized that 44kz/16 bit was way more than the minimum frequency/data depth needed so "take the easy road" and use existing proven existing hardware and software.
I will post code and updates later. Comments welcome favourable and otherwise.
tom schmitt
Atlanta, Georgia
USA
A proton precession magnetometer is a small NMR. It is used to measure the earths magnetic field. A magnetic field polarizes the spin of protons in water and when it relaxes the proton spin is measured by a coil. The signal is in the micrvolt range. We have a functioning amplifier and filter.
I tried using some SPI ADCs for digitzing and lost patience. I then realized that 44kz/16 bit was way more than the minimum frequency/data depth needed so "take the easy road" and use existing proven existing hardware and software.
I will post code and updates later. Comments welcome favourable and otherwise.
tom schmitt
Atlanta, Georgia
USA