Hi Alan,
Currently there is no way to use a saved Measurement and Automation task in MATLAB. Measurement and Automation does not give a way to access the task outside their software.
The Data Acquisition Toolbox currently does not have any in built calibration features. However having said that, you could always use MATLAB's interpolation functions.
So for example if you wanted to perform a 5 step calibration for a channel with range -10 to 10 Volts.
1. Supply -10V,-5V,0V ,5V,10V to your channel one by one and measure the actual voltage using the Data Acquisition Toolbox functions. You can run a clocked acquisition and average the results over some number of samples using the mean function
2. Now say your measured values were [ -9.1, -5.3, 0.1, 5.4, 9.8 ]
3. Now you can write your own calibrate function
function calibrated_values = calibrate(raw_values)
measured_values = [ -9.1, -5.3, 0.1 ,5.4, 9.8 ];
reference_values = [ -10 ,-5 , 0, 5 ,10 ];
calibrated_values = ...
interp1(measured_values,reference_values,raw_values);
end
interp1 by default uses Liner interpolation. There are many different ways in which you can interpolate your data, you can look at other options provided by the interp1 function .
4. Now after acquiring data, you can use your calibrate function.
Hope this helps,
Manisha
