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%\input dspace12.tex
%\input pstricks.tex
%\input psfig
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\newcommand{\axaf}{{\em AXAF}}
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\large
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\centerline {\bf 1.29\_V2.0 SET FOCAL PLANE TEMPERATURE TO -126 C }
\vspace{0.25in}

\normalsize
\noindent{\it Last Revised: August 1,1999}\\
\noindent{\bf Filename: setfp\_m126} \\


\noindent {\bf BRIEF FUNCTIONAL DESCRIPTION:} \\
\normalsize
This is an ``atomic'' procedure which simply sets the focal plane
temperature to -126 C.  IT DOES NOT DISABLE THE FOCAL PLANE BAKEOUT.

\vspace{0.25in}
\noindent The sequence of actions will be: 
\be
\vspace{-0.10in}
\item load the ACIS SW command packet which sets the temperature and
dump the system configuration.
\ee


\vspace{0.15in}
\normalsize
\noindent {\bf ASSUMED INSTRUMENT STATE:} \\
\normalsize
Assumes that at least one side of the DPA and DEA A are on and the 
flight SW is running. \\

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\normalsize
\noindent {\bf SPECIAL INITIAL CONDITIONS:} \\
\normalsize
Assumes that the contamination environment allows the focal plane to
be cooled to -126 C. \\
%The environment must be clean enough to allow opening of the valve. \\
%Assumes that \axaf\/ ISIM RCTU is powered on and in telemetry format 6. \\

%\newpage 

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\normalsize
\noindent {\bf OPERATIONAL CONSTRAINTS/CAUTIONS:} \\
\normalsize
THIS PROCEDURE DOES NOT DISABLE THE FOCAL PLANE BAKEOUT HEATER.\\
The focal plane must not be cooled below the dewpoint of water if the
CCD are powered on. \\
The focal plane should not be cooled if the spacecraft is still
outgassing significantly and there is a path for the contaminants to
flow to the focal plane. \\


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\normalsize
\noindent {\bf REFERENCES:} \\
\normalsize

\normalsize
\noindent {\bf CHANGE HISTORY:} \\
\normalsize

{\bf V2.0}
\begin{itemize}
\item Initial version.
\end{itemize}


\newcommand{\tablecaptiontext}{SET THE FOCAL PLANE TEMPERATURE TO -126 C}
\input{setfp_m126.tab}

\end{document}
