The first data from PyPPM 2.1!

A project log for PyPPM: A Proton Precession Magnetometer for all!

A device for conducting Nuclear Magnetic Resonance experiments at Earth's field

Bradley Worley • 10/01/2014 at 15:11•3 Comments

I've been ironing out the wrinkles in the new PyPPM firmware, and I finally have the assembly-based acquisition and delay routines working.

One nice thing about assembly is how fast I can read data from the ADC now: 100 kS/s and PyPPM2 doesn't even break a sweat! Check it out:

And now the frequency domain shot...

This is with a 50 Ohm terminator on the input BNC connector. I couldn't be bothered to get the real frequency-domain units. Maybe another time. :)

Until next time!

~ Brad.

Previous log

PyPPM "Artist's" Rendition

09/29/2014 at 00:54 • 0 comments

Next log

Capacitive tuning is working!

10/05/2014 at 02:14 • 3 comments

Discussions

Michael Tayler wrote 07/15/2018 at 23:11

Very nice project. Do you have a calibration for the noise floor in T/Hz^1/2

Are you sure? yes | no

Bradley Worley wrote 07/16/2018 at 09:31

Thanks Michael. Unfortunately no, I never got around to rigorously testing the PyPPM2, but eventually I want to pick it up again, probably after my postdoc. :)

Are you sure? yes | no

Bradley Worley wrote 10/01/2014 at 15:21

Sidebar: of course, 100 kS/s is complete overkill, but it's nice to know the hardware is capable of such high performance.

Are you sure? yes | no

The first data from PyPPM 2.1!

PyPPM "Artist's" Rendition

Capacitive tuning is working!

Discussions

Become a Hackaday.io Member