\documentclass[11pt]{article}
%\documentstyle[11pt]{article}

\usepackage{lscape}

\topmargin -0.75truein
\oddsidemargin -0.4truein
\textheight 9.45truein
\textwidth 6.7truein
\hbadness=10001
\hfuzz=200pt


\begin{document}
%\input dspace12.tex
%\input pstricks.tex
%\input psfig
\newcommand{\be}{\begin{enumerate}}
\newcommand{\ee}{\end{enumerate}}
\newcommand{\bc}{\begin{center}}
\newcommand{\ec}{\end{center}}
\newcommand{\bi}{\begin{itemize}}
\newcommand{\ei}{\end{itemize}}
\newcommand{\bd}{\begin{description}}
\newcommand{\ed}{\end{description}}
\newcommand{\bt}{\begin{tabbing}}
\newcommand{\et}{\end{tabbing}}
\newcommand{\eg}{{\it e.g.~}}
\newcommand{\ie}{{\it i.e.~}}
\newcommand{\ul}{\underline}
\newcommand{\axaf}{{\em AXAF}}
\def\la{\hbox{\rlap{$<$}\lower0.5ex\hbox{$\sim$}\ }}

\large
%\vspace*{-0.5in}
\centerline {\bf 2.6\_V2.0 DEA/FEP MUX Verification } 
\vspace{0.25in}

\normalsize
\noindent{\it Last Revised: June 27, 1999}\\
\noindent{\bf Filename: deafep\_mux} \\

\noindent {\bf BRIEF FUNCTIONAL DESCRIPTION:} \\
\normalsize
This activity performs the DEA/FEP MUX verification portion of the
ACIS Long Form Functional Procedure (see MIT Document 36-01301.01 Rev. E).

Within ACIS, each Front End Processor (FEP) is capable of being configured
to process data from any of the 10 Detector Electronics Assembly (DEA)
Video Boards. This activity verifies this capability.

This activity consists of setting up and briefly running a series
of science runs, where the runs vary which FEPs are assigned to
which Video Boards. In order to verify that the FEPs are processing
the correct Video Boards, each run configures the video offset parameters
to force the overclock levels from certain quadrants on a board to zero.
The ACIS EGSE is then used to verify that each FEP is processing data
from the proper video board.

The overall procedure consists of 4 main steps:
\be
\item
Power on the 6 FEPs and the 6 DEA video boards used for imaging
\item
Run a suite of science runs, varying the expected overclock levels in each run
\item
Power off the imaging video boards and power on those used for spectroscopy
\item
Run a new suite of science runs, varying the expected overclock levels for each
\ee

Each run within this activity consists of the following overall steps:
\be
\item
Load a test parameter block
\item
Start the science run
\item
Wait for exposure records for each FEP and verify the quadrant pattern
\item
Stop the science run
\ee

The verifiers for the setup and these runs will consist of the measured power
levels for the DEA and DPA; command echoes;
exposure records from the runs; and science reports from the runs.
The easiest method of verifying the quadrant levels is to use
the ACIS EGSE's ``Monitor Noise'' program to display the overclock
levels from the exposure records as they arrive in the telemetry stream.

At the end of the procedure the video boards and FEPs are powered down
to return the instrument to its thermal standby state.

\vspace{0.15in}
\normalsize
\noindent {\bf ASSUMED INSTRUMENT STATE:} \\
\normalsize
Assumes the instrument is in the canonical thermal standby state with
BEP A selected.\\

%\vspace{0.25in}
\normalsize
\noindent {\bf SPECIAL INITIAL CONDITIONS:} \\
\normalsize
Spacecraft telemetry must be in Format 2 during steps 3--5 (the
science runs). \\

%\newpage 

%\vspace{0.25in}
\normalsize
\noindent {\bf OPERATIONAL CONSTRAINTS/CAUTIONS:} \\
\normalsize
This procedure powers on the FEPs, and powers on and off video boards.
This will vary the power draw of ACIS. This may or may not be an issue
depending on other activities happening with the spacecraft.

\vspace{0.15in}
\normalsize
\noindent {\bf REFERENCES:} \\
\normalsize
ACIS Long Form Functional Procedure - MIT Document 36-01301.01 Rev. E

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

{\bf V1.2}
\begin{itemize}
\item added a ``cold boot'' at the beginning of the procedure in step 1
\item added commands to power down the video boards and FEPs at the
end of the procedure in step 6
\end{itemize}

{\bf V1.3}
\begin{itemize}
\item added steps 1.6, 1.7, 1.8 to verify BEP A cold boot
\item changed command in step 2.1 to power-up FEPs and imaging video
boards to ``WSPOW0CF3F''
\item added commandEcho values for all SW command packets 
\item changed command in step 4.1 to power-up FEPs and imaging video
boards to ``WSPOW3F03F''
\item changed step 6 to return to the canonical thermal standny state
\end{itemize}

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


\newcommand{\tablecaptiontext}{ACIS DEA Video Board/FEP Mux Test}
\input{deafep_mux.tab}

\end{document}
