Commit 95246510 authored by Paolo Baesso's avatar Paolo Baesso

Minor tweak

parent 0fa3ecd9
...@@ -4,7 +4,8 @@ An optional ``shutter'' can be enabled to synchronize the acquisition window to ...@@ -4,7 +4,8 @@ An optional ``shutter'' can be enabled to synchronize the acquisition window to
When the shutter is ``closed'' triggers are vetoed and no triggers are sent. When the shutter is ``open'' triggers can be generated and sent to active \gls{dut}s.\\ When the shutter is ``closed'' triggers are vetoed and no triggers are sent. When the shutter is ``open'' triggers can be generated and sent to active \gls{dut}s.\\
The shutter cycle can either be started by an external signal or synchronized by a counter clocked by the system clock (i.e. internally-generated shutter, which can be used to debug hardware).\\ The shutter cycle can either be started by an external signal or synchronized by a counter clocked by the system clock (i.e. internally-generated shutter, which can be used to debug hardware).\\
The external signal, if used, must be connected to one of the six LEMO trigger inputs.\\ The external signal, if used, must be connected to one of the six LEMO trigger inputs.\\
\begin{alertinfo}{If the external signal is used, an appropriate threshold should be set to the corresponding input. The input used for synchronizing the shutter should not be used in the trigger mask.} \begin{alertinfo}{Warning}
{If the external signal is used, an appropriate threshold should be set to the corresponding input. The input used for synchronizing the shutter should not be used in the trigger mask.}
\end{alertinfo} \end{alertinfo}
Figure~\ref{fig:shutter_timing} illustrates the timing of the shutter sequence.\\ Figure~\ref{fig:shutter_timing} illustrates the timing of the shutter sequence.\\
When the shutter is open, the \gls{tlu} will assert the \verb|CONT| line (see table~\ref{tab:HDMIpins}), indicating to the \gls{dut} that the sequence is active.\\ When the shutter is open, the \gls{tlu} will assert the \verb|CONT| line (see table~\ref{tab:HDMIpins}), indicating to the \gls{dut} that the sequence is active.\\
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