I would agree. It seems that those who purchased the SA, BB, and SP series spectrum analyzers likely did not do so to perform high end phase noise analysis. So in my view keeping the old basic functionality for these spectrum analyzers would not prevent users from upgrading to the new tool if they really needed that type of performance and it makes good financial sense. A not so good solution is to keep an old version of Spike around just for Phase Noise.
The new Spike doc suggests the old feature is still available, “…Phase noise can be measured using any single Signal Hound spectrum analyzer, or by using the PN400 phase noise test system…”
I also hope you would reconsider and allow basic Phase Noise analysis as before at least for the SA, BB, and SP series spectrum analyzers.
