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\large
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\centerline {\bf 1.9\_V2.0 SET FOCAL PLANE TEMPERATURE TO -90 C }
\vspace{0.25in}

\normalsize
\noindent{\it Last Revised: June 23,1999}\\
\noindent{\bf Filename: setfp\_m90} \\


\noindent {\bf BRIEF FUNCTIONAL DESCRIPTION:} \\
\normalsize
This is an ``atomic'' procedure which simply sets the focal plane
temperature to -90 C.  This procedure assumes that it will be necessary
to use the FP bakeout heater to raise the FP temperature to -90~C; if
the ISIM runs hotter than expected this may not be true.
{\bf THE INSTRUMENT IS LEFT IN A STATE WITH THE FOCAL PLANE 
BAKEOUT ENABLED AND THE FOCAL PLANE TEMPERATURE ELEVATED TO -90~C.}

\vspace{0.25in}
\noindent The sequence of actions will be: 
\be
\item start a DEA HKP run if necessary
\vspace{-0.10in}
\item enable the FP bakeout heater start heating FP to -90 C
\vspace{-0.10in}
\item verify that the FP temp stabilizes at -90 C
\ee


\vspace{0.15in}
\normalsize
\noindent {\bf ASSUMED INSTRUMENT STATE:} \\
\normalsize
Assumes the instrument is in the canonical thermal standby state (the
video boards and FEPs should be off !!!!).\\



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\normalsize
\noindent {\bf SPECIAL INITIAL CONDITIONS:} \\
\normalsize
Assumes that the contamination environment allows the focal plane to
be cooled to -90 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 

%\vspace{0.25in}
\normalsize
\noindent {\bf OPERATIONAL CONSTRAINTS/CAUTIONS:} \\
\normalsize
The instrument is left in a state with the focal plane bakeout enabled
and the focal plane temperature elevated to -90~C.\\
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. \\
{CARD-C-005}.\\

\vspace{0.15in}
\normalsize
\noindent {\bf REFERENCES:} \\
\normalsize

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

{\bf V1.2}
\begin{itemize}
\item changed filenames from ``setFP\_m90'' to ``setfp\_m90''
\end{itemize}

{\bf V1.3}
\begin{itemize}
\item added the command to set the warm boot flag off in step 2.2
\item added ``dumpSysConfig'' command in step 2.6
\item created a new step to explicitly wait for temperature stabilization
\item added radiator and camera body temperatures to the list of
verifiers in step 3.1
\item added commandEcho values in steps 1.1, 1.2, 2.5 \& 2.6
\item added filename identification at top of procedure
\end{itemize}

{\bf V1.4}
\begin{itemize}
\item changed HW TLM verifier in step 4.1 to 1DE28AV0 from 1DEP3AVO,
and expected value to 27.0-35.0~V, and changed DEA A input current
to 0.60--0.78~A
\end{itemize}


{\bf V2.0}
\begin{itemize}
\item ACIS Team signed-off version
\item fixed typos in ``Brief Functional Description'' and
``Operational Constraints and Cautions'' section which said -50~C
instead of -90~C
\item changed expected value of the cold radiator temperatures
(1CRAT,1CRBT) in step 3.1 to be -110~C
\end{itemize}

\newcommand{\tablecaptiontext}{SET THE FOCAL PLANE TEMPERATURE TO -90 C}
\input{setfp_m90.tab}

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