Thank you for purchasing the openCom LTE from Liberated Embedded
Systems.
Within your package you will find the following:
\begin{itemize}
\item\textbf{1x openCom LTE}
\item LTE antenna(s) (if ordered)
\item SMA dust covers (if ordered)
\item 3x assorted stickers
\item This manual
\end{itemize}
\newpage
\section{Overview}
Within this section, we provide an overview of notable aspects of the openCom LTE.
\subsection{Top}
\begin{multicols}{2}
The openCom LTE supports 3 antenna connections, with these being:
\begin{itemize}
\item An SMA main antenna for LTE connectivity (J1)
\item An SMA diversity antenna to enhance connection reliability (J2)
\item A u.FL GPS antenna for determining location (J3)
\end{itemize}
The LEDs D2 and D3 are status indicators, and are covered in the next
section.
\columnbreak
\includegraphics[scale=0.27]{top-circled.png}
\end{multicols}
Please note that a GPS antenna is \textbf{not included} with the device, and
one can only be connected with the top cover disassembled.
\subsubsection{LEDs}
\textbf{D3, or the left LED}, is red, and activates when the device is powered on.
\textbf{D2, or the right LED}, is red, and flashes differently depending on network status:
\begin{itemize}
\item Short flashing - searching for cell tower
\item Long flashing - idle
\item Quick flicker - data transfer
%\item Constantly on - voice calling
\end{itemize}
\subsection{Bottom}
\begin{multicols}{2}
\setlength{\parskip}{0pt}% stop stretching across whole column vertical space
On the rear side of the device, the SIM slot is present, which
accepts a \textbf{nano sized} SIM card.
\vspace{5mm}
The SIM can be inserted into the slot by pushing it until it clicks. It
can also be removed by pushing it until it clicks, and it will spring
out after. You may want to consider using the spudger end of your
Framework screwdriver to help insert and remove it.
\vspace{5mm}
There are many test points present on rear of the device, which are
documented in the next section.
\columnbreak
\includegraphics[scale=0.25]{bottom-circled.png}
\end{multicols}
\newpage
\subsection{Test points}
\begin{multicols}{2}
\setlength{\parskip}{0pt}% stop stretching across whole column vertical space
There are several test points available on the device, which allow you to
test critical functionality of the device if you so choose.
These are detailed below:
\begin{itemize}
\item TP1 - USB D+ trace
\item TP2 - USB D- trace
\item TP3 - GND
\item TP4 - USB\_BOOT
\item TP5 - VDD\_EXT
\end{itemize}
Note that to access TP1 and TP2, the resistor pads R13 and R14 must be
bridged with wire or solder, as 0Ω resistors are not provided here.
\subsubsection{Emergency download mode}
If necessary, the module can be booted into emergency download mode by
shorting TP4 and TP5 before powering it up. This will allow you to upgrade
the firmware of the module over USB. The firmware upgrade can only be done with the QFlash utility from Quectel, which only works on Windows. A download link is provided in Section \ref{sec:Windows}.
In order to use your openCom LTE, you must first connect the external
antenna(s) to facilitate communication.
Connect an antenna to the \textbf{J1 port} on the device, which is the
right external SMA connector. It is screwed on clockwise.
Although the diversity antenna on the \textbf{J2 port} is optional,
\textbf{consider also connecting it} to the device in order to ensure an
optimal internet connection.
\columnbreak
\includegraphics[scale=0.2]{sma-circled.png}
\end{multicols}
Your openCom LTE is now assembled and ready to go, and can be inserted into
your Framework Laptop by slotting it into an empty Expansion Card bay.
\textbf{Remember to insert your SIM card!}
\newpage
\section{Usage}
\subsection{Antennas}
If you chose to bring your own LTE antennas at checkout, please ensure you
purchase LTE antennas with a VSWR < 2 for optimal performance.
Additionally, if you choose to purchase a GPS antenna for your use, ensure it is a passive antenna (active antennas are not supported), with a VSWR <= 2.
\subsection{Linux}
On Linux you may use NetworkManager with ModemManager to create a connection
for your openCom LTE. With the device plugged in, create a new connection,
choosing "mobile broadband", then progress through the Wizard. If you use
\textbf{Arch Linux}, there are great wiki articles on the subject.
\subsection{Windows}
\label{sec:Windows}
Download the drivers to interface with your openCom LTE from the following
