How to handle the ~3.2 kHz pole in the ESD driver electronics
The ~3.2 kHz pole in the ESD driver electronics needs to be compensated or accounted for in the CALCS, GDS, and DCS pipelines.
We could not install the compensating "3.2 kHz zero" in-loop, so, instead, a 3.2 kHz pole was installed in the CALCS model of the DARM actuation for the L3 path. This means that GDS would not have to account for the pole.
However, the DCS pipeline still needs to account for this pole when computing the TST (L3) FIR filter.
It is not known whether this was done correctly or not (hopefully it was!), and what impact this may have had on the response function systematic error if it was not done correctly.
Perhaps we should rethink how and where to handle this 3.2 kHz pole.