Lena/Oct 2016: Difference between revisions

In order to run the data acquisition at a smaller rate, we can place a hardware anti-aliasing filter on the differential polarimeter boards. This would take the computational load off the digital system and relax the requirements on how fast we acquire the data. Mike suggests replacing adding an active two-pole filter at the output of the polarimeter board. We can place a quad OP140 on the board instead of the dual version. The filter design is described in Horowitz and Hill in CH5.07 page 274. We would need to try different filters to see which one works best for our signal.