Attempts to fix property issue in TxAbstract init

hardware/abstract_hardware.py

@@ -27,7 +27,7 @@ class TxAbstract(ABC):
         #self._polarity = polarity
         self._inj_time = None
         self._dps_state = 'off'
-        self.adc_gain = 1.
+        self._adc_gain = 1.
         self.polarity = polarity
         self.inj_time = inj_time
         self.exec_logger.debug(f'{self.board_name} TX initialization')

hardware/ohmpi_card_3_15.py

@@ -73,7 +73,7 @@ class Tx(TxAbstract):
         self.mcp_board = MCP23008(self.controller.bus, address=TX_CONFIG['mcp_board_address'])
 
         # ADS1115 for current measurement (AB)
-        self._adc_gain = 2/3
+        self.adc_gain = 2/3
         self._ads_current_address = 0x48
         self._ads_current = ads.ADS1115(self.controller.bus, gain=self.adc_gain, data_rate=860,
                                         address=self._ads_current_address)