\usepackage {pstcol,pst-node,pst-tree,graphics}

\usepackage {pstcol,pst-node,pst-tree,graphics}
\rotatebox{90}{%
\psset{nodesep=2pt}
\newcommand{\XX}[2]{%
\TR{\ensuremath{#1_{\mbox{#2}}}}%
}
\pstree[xbbr=1.5cm]{\XX{R}{AMSU}}
{
\XX{S}{RawData}
\pstree{\XX{S}{combine}
\trput{\ensuremath{\oplus}}
\tlput{\ensuremath{\oplus}}}
{
\psset{linestyle=dashed}
\XX{R}{Modes}
\XX{R}{Normal}
\XX{R}{Vertical}
\XX{R}{Latched}
\XX{R}{Tripped}
\XX{R}{Other}
}
\XX{S}{GenerateData}
}
}