Oscilloscope symbols

What does the symbol in the oscilloscope mean ？

Vtop=5.05V,—— Voltage value at the top of the waveform 

Vbase=56.9mV,—— The voltage value at the bottom of the waveform 

Vamp=5.01V,—— Waveform amplitude value 

Vrms=1.98V,—— Root mean square value of voltage 

Prd=669.0us,—— cycle 

Rise<4.00us,—— Rise time 

Fall<4.00us,—— Descent time 

+wid=125.0us,—— Positive pulse width 

-wid=544.0us,—— Negative pulse width 

+Duty=18.7%,—— Positive duty cycle , Percentage of the length of a square wave positive pulse width in the whole cycle 

-Duty=81.2%,—— Negative duty cycle , Percentage of the length of a square wave negative pulse width in the whole cycle 

 square wave , The ratio of high level to low level , It can be downloaded from +wid、-wid、+Duty、-Duty These parameters are used to calculate