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\title{AHEPaM - Open questions from CAU to ESA}
\author{Patrick Kühl}
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\maketitle
\begin{abstract}
    This document summarizes open questions from CAU to ESA.
\end{abstract}
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CAU would like to discuss the following points with ESA:
\begin{enumerate}
    \item How is the delay in phase one altering the schedule for phase two?
    \item The thermal environment needs to be specified in more detail (see also comments to the related requirements)
    \item CAU would like to clearify the electronic interface:
    \begin{itemize}
        \item Definition of interface connectors:
        \begin{itemize}
            \item Is data interface separated from power interface?
            \item Preferred connector type and pinning?
            \item When non operational survival heater is needed, is this an individual connector?
            \item Our instrument has a high speed streaming calibration data interface, which is not connected to space craft on FM. We prefer to have this data lines on one of the existing connectors.
        \end{itemize}
        \item Input voltage range? We prefer 28V, what is the expected worst case input voltage range for our instrument?
        \item Current limiter? Is there a current limiter on space craft side or is there a maximum peak current requirement for our instrument, we have to take care of?
    \end{itemize}
    
    \item Section 5 in the system requirement document \cite{ahepam-req} lists requirements from CAU to ESA. Can ESA comply with them?
    \item Furthermore, several requirements need input/clearification/updates from ESA:
    \begin{itemize}
        \item R-AHEPaM-021:  Proton precision
        \item R-AHEPaM-025:  Electron precision
        \item R-AHEPaM-026:  Electron precision
        \item R-AHEPaM-027:  Electrons statistical accuracy
        \item R-AHEPaM-030:  Helium relative precision
        \item R-AHEPaM-039:  Thermal limits
        \item R-AHEPaM-041:  AHEPaM TRP
        \item R-AHEPaM-042:  Radiative thermal IF
        \item R-AHEPaM-044:  Thermal stability
        \item R-AHEPaM-045:  Conductive IF stability
        \item R-AHEPaM-046:  Conductive IF temperature gradient
        \item R-AHEPaM-047:  AHEPaM mass
        \item R-AHEPaM-140:  Sine vibration
        \item R-AHEPaM-150:  Accoustic environment
    \end{itemize}

\end{enumerate}
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