If your look at the pic there are 2 sets of signals.
top 2 are 1 signal(standard futaba)
bottom 2 are the 2nd signal (unknow)

The first 2 are from a standard servo signal. Thats normal futaba whatever.
No matter how long the pulse is the peaks start at a set interval.

The 2nd 2 are from off brand cheapo thing. It if you notice looks different than the top 2 at the same settings. When the low shrinks the pulses get closer.

I'm getting it now tho.