id4_common.devices.scaler_dual_ctr8
===================================

.. py:module:: id4_common.devices.scaler_dual_ctr8

.. autoapi-nested-parse::

   Setup for two CTR8 devices used together









Module Contents
---------------

.. py:data:: NUMCHANNELS
   :value: 8


.. py:data:: PREFIX1
   :value: '4idCTR8_1:scaler1'


.. py:data:: PREFIX2
   :value: '4idCTR8_1:scaler2'


.. py:class:: LocalScalerChannel(*args, ch_num=0, **kwargs)

   Bases: :py:obj:`ophyd.scaler.ScalerChannel`


   ScalerChannel subclass that tracks which physical scaler board owns this
   channel.


.. py:function:: make_channels()

   Build an OrderedDict of 15 combined channels across two CTR8 scaler boards.


.. py:class:: DualCTR8Scaler(prefix1, prefix2, **kwargs)

   Bases: :py:obj:`ophyd.Device`


   Combined scaler device aggregating two CTR8 boards into a single 15-channel
   interface.


   .. py:attribute:: prefix1


   .. py:attribute:: prefix2


   .. py:attribute:: channels


   .. py:attribute:: scaler1


   .. py:attribute:: scaler2


   .. py:attribute:: freq


   .. py:attribute:: preset_time
      :value: None



   .. py:attribute:: preset_monitor


   .. py:method:: match_names()

      Sync each channel's Python name to the EPICS channel-name PV value.



   .. py:method:: select_channels(chan_names=None)

      Select channels based on the EPICS name PV

      :param chan_names: The names (as reported by the ``channel.chname`` signal)
                         of the channels to select.
                         If ``None``, select **all** channels named in the EPICS scaler.
      :type chan_names: Iterable[str] or None



   .. py:property:: trigger_scaler

      Return scaler1 as the hardware trigger source for both boards.


   .. py:method:: trigger()

      Trigger acquisition on scaler1; the second board follows via hardware
      connection.



   .. py:property:: channels_name_map

      Return a dict mapping EPICS channel names to component attribute names.


   .. py:method:: select_plot_channels(chan_names=None)

      Set the Kind of each channel to hinted (in chan_names) or normal
      (others).



   .. py:method:: select_read_channels(chan_names=None)

      Select channels based on the EPICS name PV.

      :param chan_names: The names (as reported by the channel.chname signal)
                         of the channels to select.
                         If *None*, select all channels named in the EPICS scaler.
      :type chan_names: Iterable[str] or None



   .. py:property:: monitor

      Return the EPICS name of the currently selected monitor channel.


   .. py:property:: plot_options

      Return a list of all named scaler channel names available for plotting.


   .. py:method:: select_plot(channels)

      Set hinted kind for the given channel list, delegating to
      select_plot_channels.



   .. py:method:: default_settings()

      Initialize monitor, read channels, plot channels, and scaler delays.