Thank you for the explanation!
Let me tell some other personal impressions on network analyzer mode.
1. It would be very useful to save \ load “Store Thru” calibration (and other parameters – freq range, number of points, gain…). Now every time I run Spike, I have to plug-unplug connectors, make calibration again.
May be the easiest thing would be to add “Store Thru” data to Presets.
The most annoying thing is accidental lost of calibration, it’s not so obvious why some parameters change involves calibration lost and some others don’t.
2. Second cool thing would be to have a logarithmic frequency scale in network analysis mode, to make a wideband amplifer test (10-100 points in every decade from KHz up to GHz). To easily see a rise\fall lines with 6 (12 or 18)dB/octave.
3. Third useful thing would be a kind of power sweep mode, to do 2-4 plots on one screen with different attenuation of tracking generator output (0dB, -10dB, -20dB, -30dB). That mode can show an amplifier dynamic range and possible saturation or compression of the signal.
Regards, Ivan