Michael, Sure, I am not denying that it cannot be done, I was trying to explain to you it's usage and determinism of the data will depend on the topology , what gain it has etc. And this was the reason we chose not to document it that way for the TIDM-HV-1PH-DCAC . Also please note there are lots of permutations and combinations possible , we may not be able to document all the methods possible. We document one which we used. And in that case because we had the model, we did not need to measure in open loop. If you feel that you need to do open loop plant measurement, that is perfectly supported with SFRA . -Manish
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