'Start receiving epochs.
The measurement will be started if it has not already been started.'

def start(self):

    if (not self._started):
        self._client.register_receive_callback(self._process_raw_buffer)
        nchan = self._client_info['nchan']
        self._client.start_receive_thread(nchan)
        self._started = True
        self._last_time = np.inf
