diff --git a/ohmpi/hardware_system.py b/ohmpi/hardware_system.py
index 7582fa5caa1deb0b9892e846361e82e349c6d356..e13a97c0a2f3a72ea276eb08ccdbf1963c84d967 100644
--- a/ohmpi/hardware_system.py
+++ b/ohmpi/hardware_system.py
@@ -153,7 +153,8 @@ class OhmPiHardware:
 
         if not self.tx.pwr.voltage_adjustable:
             self.tx._pwr_latency = 0
-        self.tx.polarity = 0
+        if self.tx.specs['connect']:
+            self.tx.polarity = 0
         self.tx.pwr._current_max = self.current_max
 
         # Initialize Muxes