diff --git a/ohmpi/hardware_components/mb_2023_0_X.py b/ohmpi/hardware_components/mb_2023_0_X.py
index 38cac0ee21538a3d50b0ed175f326ab2224abc76..e43794d95fd3247a96d18e93aa3ac29067e490e7 100644
--- a/ohmpi/hardware_components/mb_2023_0_X.py
+++ b/ohmpi/hardware_components/mb_2023_0_X.py
@@ -157,6 +157,7 @@ class Tx(TxAbstract):
 
     @polarity.setter
     def polarity(self, polarity):
+        print(polarity)
         assert polarity in [-1, 0, 1]
         self._polarity = polarity
         if polarity == 1: