ITMY-ISI Tranfsfer Functions With a Quad
The Badness on stage one (19-30 peaks) is only seen in the CPS and not the L4Cs so is presumably the test stand.
There is a not enormous cluster of peaks around 265-270 on the St1-> L4Cs TFs which are probably the spring resonance
For the lower frequency data set, Stage 1, V2 actuator was unplugged