I am trying to get used Pspice simulation for a small circuitry, and I made a very simple circuit to learn its each function. the circuit loop only contains one VSIN(10V amplitude, 50 hz) and one 1K resistor, and of course this loop has the GND. I used AC sweep. After simulation, the voltage cross the VSIN is zero. I cannot understand what I did wrong. The Pspice I using is student version 9.1 I just want to show VSIN(input) wave output vs time. Thank you.