photomultiplier example
=========================  


.. code-block:: RST

        python3 pmt_example.py --ip <ip> --port <port> --PMT <PMT number> --voltage <voltage>

        Argument List : 
        --ip        ip address of the ethernetController we wish to communicate with. 
        --port      command socket port number. (default 2055)
        --PMT    device number to communicate with.(default 0)
        --voltage   desired voltage in Volt. (default 0 volt)