This is the built in 1 KHz test signal.
This is the "0" bit for my WS2812 signs. It is .19 us, it is supposed to be about .400 us.
This is the "1" bit for my WS2812 signs. It is .57 us, it is supposed to be about .800 us. I had to measure from the center line as the trigger had issues with the lower signal level. In fact I had to write a version of the sign software that sent all 1's to be able to capture the pulses.