Measurement board
=============================

This section introduces the OhmPi measurement boards. Starting from this year, it has been possible to use any measurement board with the latest OhmPi code.
Consequently, the OhmPi group provides a variety of board options tailored to your technical needs (e.g., laboratory measurement, field measurement), budget, and electronic skills.

The characteristics of each measurement board are described in the following table:


Recognize the version of the measurement board
----------------------------------------------

   +-----------------------------------------------------------------+
   |   .. image:: ../../img/v2023.x.x/step_n_2/a/24_mes_board.jpg    |
   +-----------------------------------------------------------------+
   |**Measurement board V2023.0.1**                                  |
   +-----------------------------------------------------------------+
   |   .. image:: ../../img/mb.2024.x.x/31.jpg                       |
   +-----------------------------------------------------------------+
   |**Measurement board V2024.0.2**                                  |
   +-----------------------------------------------------------------+  

Specifications
--------------

.. table::
   :align: center

   +----------------------------------+-----------------------+-----------+-----------------------+-----------+
   | **Parameters**                   |**v2023.0.1**          | Units     |       **v2024.0.2**   | Units     |
   +==================================+=======================+===========+=======================+===========+
   |Vmn number of channels            |1                      |-          |1                      |-          |
   +----------------------------------+-----------------------+-----------+-----------------------+-----------+
   |Operating temperature             |0 to 50                |°C         |-25 to 50              |°C         |
   +----------------------------------+-----------------------+-----------+-----------------------+-----------+
   |Max. permissible Vab              |24                     |vdc        |200                    |vdc        |
   +----------------------------------+-----------------------+-----------+-----------------------+-----------+
   |Power supply                      |12                     |vdc        |12                     |vdc        |
   +----------------------------------+-----------------------+-----------+-----------------------+-----------+
   |Current with 2 ohms shunt resistor|0.11 to 40             |mA         |0.11 to 500            |mA         |
   +----------------------------------+-----------------------+-----------+-----------------------+-----------+
   |Min pulse duration                |50                     |ms         |50                     |ms         |
   +----------------------------------+-----------------------+-----------+-----------------------+-----------+
   |Max pulse duration                |15                     |second     |15                     |second     |
   +----------------------------------+-----------------------+-----------+-----------------------+-----------+
   |Vmn input impedance               |80                     |MOhm       |1                      |TOhm       |
   +----------------------------------+-----------------------+-----------+-----------------------+-----------+
   |Vmn range                         |-/+ 5                  |volt       | -/+5                  |volt       |
   +----------------------------------+-----------------------+-----------+-----------------------+-----------+




Assemble you measurement board:
------------------------------- 

.. toctree:: 
   :maxdepth: 2 

   mb/mb_2023.rst
   mb/mb_2024.rst