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\begin{document}

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{
\VERYHuge \vspace*{-0.6cm}
\textsf{\textbf{
Lab::Measurement -- measurement control with Perl
}}
}
\\[\baselineskip]
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&
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{
\vspace*{-0.5cm}
\huge 
S. Reinhardt, M. Schambeck, E. Fabrizzi, and A. K. Hüttel
}
\\[\medskipamount]
{\it 
\Large
Institute for Experimental and Applied
Physics, University of Regensburg, 93040 Regensburg, Germany\\
}
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\vspace*{9mm}





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\vspace*{0.9cm}
\heading{Flexible measurement needed?!}

\vspace*{-1cm}
\begin{itemize}
\item
Tired of following your wires in square meters of LabVIEW diagrams?
\item
Tired of clumsy string handling and low-level driver functions
in your looong C program?
\item
Use a text processing language to manage your measurement! Use Perl!
\end{itemize}
\vspace*{0.5cm}

\placelisting{srs_read.pl}

\vspace*{2cm}
\vspace*{0.9cm}
\heading{Currently supported hardware}

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\placefigure{file=images/hardware}
Hardware driver backends: 
\begin{itemize}
\item 
  NI-VISA and all hardware supported by it
\item
  LinuxGPIB and all hardware supported by it
\item
  HTTP, TCP connection, generic network socket
\item
  USB-TMC lightweight driver (Linux, libusb)
\item
  VXI-11 lightweight driver (Linux, libtirpc)
\item
  Oxford Instruments IsoBus
\item
  Zurich Instruments LabOne API
\end{itemize}

\vspace*{1cm}
Growing number of high-level drivers (more are {\it very} easy to add):
{\large
\begin{itemize}
\item Multimeters: HP / Agilent / Keysight / Keithley
\item DC sources: Yokogawa / Keithley / Keysight
\item AW generators: Rigol / Agilent / Keysight / Zurich Instruments
\item Lock-in amplifiers: Stanford Research / Signal Recovery / Zurich 
Instruments / SyncTek
\item RF / microwave sources, spectrum analyzers, VNAs: \\ Rohde \& Schwarz / 
HP / Agilent / Keysight / Rigol
\item Oscilloscopes: Tektronix / Keysight / Rohde \& Schwarz
\item Temperature controllers: Lakeshore / Oxford Instruments / Bluefors
\item Magnet power supplies: Oxford Instruments, American Magnetics (Bluefors)
\item Quantum Measurement Systems: Nanonis Tramea
\end{itemize}
}

\vspace*{1cm}
\heading{Reference / Cite as}
\textbf{``Lab::Measurement --- a portable and extensible framework for 
controlling lab  equipment and conducting measurements''}, 
S. Reinhardt {\it et al.}, Comp. Phys. Comm. \textbf{234}, 216 (2019)


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\vspace*{0.9cm}
\heading{Real world VNA measurement}

\vspace*{-1cm}
\begin{itemize}
 \item 
 Measuring $\left| S_{21} \right|^2$ for increasing signal power
 \item
 Outer loop: power applied by VNA
 \item 
 Inner loop: hardware-executed VNA frequency sweep, transmission measurement
\end{itemize}

\vspace*{0.5cm}
 \placesmalllisting{vnasweep.pl}
\vspace*{3cm}


\heading{Output files}
\vspace*{-1cm}
\placelisting{vna-ls.txt}
\vspace*{2cm}
\begin{itemize}
\item \emph{META.yml:} various metadata (host, user, date, L::M version,
  command line arguments)
\item \emph{data.dat:} measured data, in tab-separated Gnuplot format
\item \emph{data.png:} live plot at the end of the measurement, as a png image
(optional)
\item archival copy of the measurement script
\item RFC3161 timestamps for data (optional)


\end{itemize}
\vspace*{2cm}
\heading{Advanced sweep features}

\vspace*{-1cm}
\begin{itemize}
\item Multidimensional sweeps, e.g. 3D sweep: creating one 2D datafile for each
  step of the outermost sweep
\item Log arrays and matrices of data (PDLs). Useful for spectrum analyzers,
  VNAs, oscilloscopes which do fast, internally controlled sweeps.
\item Extensive support for live plots via gnuplot: line plots (2D data) and 
  color maps (3D data)
\item Customizing live plots: access to all gnuplot plot and curve options 
  via PDL::Graphics::Gnuplot
\end{itemize}


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\heading{Layer structure}

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\begin{itemize}
\item
Modular structure. Easy to extend with new instrument drivers and connection
types
\item
Abstract IO layer, makes instrument drivers independent of hardware backends
\end{itemize}

\vspace*{2cm}
\heading{High-level sweep framework}
\vspace*{-1cm}

\begin{itemize}
\item Modern Perl implementation; use state of the art object-oriented
  programming
  \vspace*{1cm}
  \placefigure{file=images/moose-sweep}
  \vspace*{0.5cm}
\item Separate classes for sweeps, datafiles, datafolders, and plots
\item Most operational details of sweeps implemented in subclasses of
  Lab::Moose::Sweep
\item High modularity: \emph{very} easy to extend
\end{itemize}
\vspace*{2cm}
  \heading{New improvements / additions}
  \vspace*{-2cm}
\begin{itemize}
  \item
  Bluefors dilution refrigerator temperature control
  \item 
  American Magnetics AMI 430 (Bluefors) magnet power supply
  \item 
  Keysight N9310A RF generator 
  \item
  Zurich Instruments HDAWG arbitrary waveform generator
\end{itemize}

\vspace*{2cm}
  \heading{Very stable}
  \vspace*{-2cm}
\begin{itemize}
  \item
  No continuous adaptions (e.g., for new Python versions or operating system 
  versions) needed
  \item
  None of the new Perl releases over the past years have
  ever required changes to measurement scripts
\end{itemize}

\vspace*{2cm}
\heading{Key facts}
\vspace*{-2cm}
\begin{itemize}
 \item
 Programmed in Perl 5, following the Modern Perl guidelines
 \item
 Open source / free software\\[-5cm]
 \item 
 {\lightblue https://www.labmeasurement.de/}
 \hfill\epsfig{file=images/qrcode-labmeasurement,width=5cm}
 \item
 License: same as Perl (GPL-1+ or Artistic)
 \item
 Releases on CPAN, development on Github
 \item
 Contributors and collaborations welcome!
\end{itemize}


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\vspace*{0.5cm}
\begin{center}\color{invheading}\large
\hspace*{-4cm}We gratefully acknowlegde funding by the DFG via the Emmy Noether 
grant Hu1808/1, SFB 689, SFB 1277, and GRK 1570.
\end{center}

\end{document}