i tried it now. now the display is fine. thanks a lot. i don;t know these small things yet

i am new to modlica. i was implementing a simple RC low pass filter. i selected the v sin package as my input source. initially i tested the circuit at small frequency that is 10,50 Hz.. it was fine but i noticed a small thing. even though i had given the amplitude as 10V it was 9.something , not exactly 10. then i increased the frequency to 500 Hz . the input got distorted. it was like saw tooth voltage increasing slowly but the y-scale was in nanos. i can't proceed any further without getting the correct input. kindly help