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Re: Magnettech MS5000 transient measurements - wrong x-axis
Posted: Fri Oct 26, 2018 2:54 am
by niconeuman
Prof. Stoll,
I upload the original files and my M-file with the simulations.
Thank you very much!
I apologize for the delay.
Re: Magnettech MS5000 transient measurements - wrong x-axis
Posted: Fri Oct 26, 2018 2:56 am
by niconeuman
Sorry, here are the spectra in a zipped file.
Re: Magnettech MS5000 transient measurements - wrong x-axis
Posted: Mon Oct 29, 2018 5:16 pm
by Stefan Stoll
The xml file you sent contains several different data vectors:
- BField (2070 points)
- MW_Absorption (1550 points)
- MW_AbsorptionSinus (41473 points)
- MW_AbsorptionCosinus (41473 points)
eprload loads MW_Absorption and interpolates the BField accordingly to give the field axis. You can also access the other two (which are the raw data, sampled every millisecond) via
Code: Select all
[B,spc,p] = eprload('data.xml');
spc1 = p.Curves.MW_AbsorptionSinus.data;
plot(spc1)
Regarding the B field, the spectrometer stores the magnetic field axis raw data as a series of values sampled at some constant time interval (10 milliseconds or so). If the field gets high, the sweep is not perfectly linear, and this is reflected in the data. You can always generate a linear B axis via
Code: Select all
[B_,spc_,p] = eprload('data.xml');
B = linspace(B_(1),B(end),numel(B));
spc = interp(B_,spc_,B);
Re: Magnettech MS5000 transient measurements - wrong x-axis
Posted: Tue Nov 06, 2018 9:00 am
by niconeuman
Thank you very much!
I will from now on check the linearity always.
Best regards,
Nicolas
Re: Magnettech MS5000 transient measurements - wrong x-axis
Posted: Thu Nov 15, 2018 9:05 am
by Silvio
I tested the new version. The loading of the transient spectra works fine now.
Thanks for that!
However, now ES cannot load 2D measurements, such as saturation measurements, anymore. The error is
Error using eprload
Cannot construct abscissa for this measurement type
There are no real 2D measurements possible with the MS5000. In addition to B0 another parameter can be swept, such as power, modulation amplitude, temperature. Each spectrum at a certain power/modulation amplitude/temperature/... is still saved in a single xml file with a different measurement type identifier (see also attached spectra).
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<Recipe Name="LOGSTest_008" Author="" Type="modulationSweep" MeasurementCount="1" CreationDate="2018-08-29T09:37:04.2687361Z">
Code: Select all
<Recipe Name="LOGSTest_009" Author="" Type="powerSweep" MeasurementCount="1" CreationDate="2018-08-29T09:48:26.4967361Z">
Code: Select all
<Recipe Name="MINST_090_SK1118" Author="" Type="temperature" MeasurementCount="1" CreationDate="2018-05-25T09:26:34.6064526Z">
I think the problem is the detection of the measurement type which differentiates only between kinetic and single at the moment. If there is another (unknown) type it throws the above mentioned error. Other types are: powerSweep, modulationSweep, temperature. The list is unfortunately not comprehensive since we do not have all extensions for the spectrometer (additional upgrades are a goniometer and an X-ray source). For a robust implementation it might be good to check only for the type "transient", which leads to the time x-axis.
Thank you very much!
Re: Magnettech MS5000 transient measurements - wrong x-axis
Posted: Thu Nov 15, 2018 12:54 pm
by Stefan Stoll
Thanks for this additional information and data. We will look into this.
Ideally, we just implement an official file format specification from Magnettech. Unfortunately, they are not able to provide us with one. Therefore, we need to improve eprload incrementally (and tediously) using example data.
Re: Magnettech MS5000 transient measurements - wrong x-axis
Posted: Sat Dec 15, 2018 9:46 pm
by Stefan Stoll
This is fixed now in 5.2.23.
Re: Magnettech MS5000 transient measurements - wrong x-axis
Posted: Thu Dec 20, 2018 3:46 am
by Silvio
It works like a charm now.
Thanks a lot!