\documentclass[11pt,a4paper,usenames,dvipsnames]{article}

\usepackage{tikz-osci}

\begin{document}

\osci[%
    scale=0.8,
    second channel=1,
    screen offset one=2,
    screen offset two=-2,
    time div=20,
    voltage div one=4,
    voltage div two=1,
    sample rate=200,
    xy mode=0,
    expr one=2*sin(2*180/0.020*x),
    expr two=1*sin(2*180/0.020*x)+0.2*sin(2*180/0.040*x),
    color one=D62626,
    color two=1053AF,
    color xy=2E8B73,
    graph back color=668866,
    info back color=D6D6D6,
    info text color=000000,
    main axis color=000000,
    sub axis color=CCCCCC,
]

\end{document}