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x2TimerML Introduction
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The x2TimeML middlelayer device is designed to provide an easy interface,
per trigger channel, to the x2Timer device. The latter, in turns, provides an
interface to a μTCA [1]_ crate controlled by
the DOOCS system, and provides
access up to 21 trigger channels. An example of the x2Timer device installed
in the laser lab is presented in :numref:`Fig. %s <fig-xtimer>`:

.. _fig-xtimer:

.. figure:: _images/x2Timer.png
   :scale: 50 %
   :align: center

   The configuration editor of the
   x2Timer device provides an interface to the trigger channels
   available in a μTCA crate.

In the given example the karabo device is connected to the μTCA
at DOOCS address XFEL.FEL/TIMER/LASLAB-LAB-SYS-UTC-1.S5.
To help the user to easily configure the triggers, the middlelayer
device x2TimerML was designed, allowing to configure a particular channel.


.. [1] MicroTCA Technology Lab, https://techlab.desy.de/