Imposed velocity curve editor

Hello,

I am performing a tensile test analysis in hyperworks (radioss bulk format). I am trying to create imposed velocity on one end of tensile bar while the other is fixed. I know the procedure for applying imposed velocity and creating the curve editor but I don't know what the X axis and Y axis in the curve editor represent.  I am guessing X axis represents the time for which the load is being applied and Y represents the load applied. Am I right? If yes, can you please tell me what are the units of time (milliseconds or seconds) and load (N, kN, lbf, etc..)?

Thanks in advance,

Parag