TLA5203 Threshold definition trouble

Hello 
I am try to verify Threshold Accuracy step from calibration manual (p23). Anyone know maybe where can i see channel status?
in my case i am connect to CK0 channel. and set up all step by step. But in one widows i am see status "1" even when i am supply 1V and in the other windows appear "waiting for trigger" in the 4V signal supplied. Please  see the attached pic and help me understand where are is i am wrong. 
Thank you

Attach calibration manual to be more understud

Hi Denis,

I think your if statement might be the problem, I would suggest trying a simpler one.

Also, make sure your signal is toggling high to low and back.