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\centerline {\bf 4.18\_V2.1 Cold Boot the Active ACIS BEP } 
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\normalsize
\noindent{\it Last Revised: December 1, 2015}\\
\noindent{\bf Filename: coldboot} \\



\noindent {\bf BRIEF FUNCTIONAL DESCRIPTION:} \\
\normalsize
This is an ``atomic'' procedure which cold boots the ACIS BEP.
ACIS flight software can be booted in either cold or warm.  
The cold boot means that ACIS will be booted from EEPROM


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\noindent The sequence of actions will be: 
\be
\item set the boot-from-uplink flag to zero (should already be zero)
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\item set the warm boot flag off (ie: do a cold boot)
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\item halt the active BEP
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\item restart the active  BEP
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\item verify BEP booted from SW TLM verifiers
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\item check HW LEDs
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\item check SW LEDs

\ee


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\normalsize
\noindent {\bf ASSUMED INSTRUMENT STATE:} \\
\normalsize


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\normalsize
\noindent {\bf SPECIAL INITIAL CONDITIONS:} \\
\normalsize


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\normalsize
\noindent {\bf OPERATIONAL CONSTRAINTS/CAUTIONS:} \\
\normalsize
This procedure coldboots the active BEP.  It removes any patches which
may have been loaded into that BEP. It also resets the focal point temperature
setting and the threshold crossings patch parameters.

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\normalsize
\noindent {\bf REFERENCES:} \\
\normalsize
\noindent ACIS Long Form Functional Test Procedure (36-01301.01) \\
\noindent ACIS Short Form Functional Test Procedure (36-01301.02) \\
\noindent ACIS Science Instrument SW User's Guide (36-54003) \\

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

{\bf V1.2}
\begin{itemize}
\item changed Time Req for all steps
\item added to check that the warmbootFlag = 0
\item added steps 1.5, 1.6, and 1.7 to verify the BEP boot
\end{itemize}


{\bf V2.0}
\begin{itemize}
\item ACIS Team signed-off version
\item changed expected value of HW TLM verifier ``1STAT7ST'' in step 1.6
\end{itemize}

{\bf V2.1}
\begin{itemize}
\item Added warnings about FP temperature setting and txings parameters
\end{itemize}

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