Jeff, Oli

I was looking over the Controls Summary Table and noticed a discrepancy between the Coil Driver Strength given in the table (11.9mA/V) and the value in the TMTS Controls Design Description(9.943mA/V). Using the make_OSEM_filter_model.m script along with looking at the driver circuit, Jeff and I were able to verify that the value shown on the Controls Design Description, 9.943 mA/V, was the correct value. The difference between the incorrect and correct value is over 19%!

We looked around at scripts that would use this coil driver value and found that the script we use for comparing transfer function measurements to the model, plotTMTS_dtttfs.m (found in $(sussvn)/TMTS/Common/MatlabTools/), had been using the wrong value to calculate the calibration, so that value was updated and committed to the svn. This difference will close the gap between the model and measurements. Thankfully that seems to be the only location where the wrong value was used.