diff --git a/ohmpi/ohmpi.py b/ohmpi/ohmpi.py
index b0372ca5f76b20e4c15ee4862a1ec85c9bf94c67..7d835f34b9b4efc527b8d0eb85d602cf7caecb5d 100644
--- a/ohmpi/ohmpi.py
+++ b/ohmpi/ohmpi.py
@@ -824,9 +824,11 @@ class OhmPi(object):
             self._hw._vab_pulse(duration=0.2, vab=tx_volt)
             current = self._hw.readings[-1, 3]
             if self._hw.tx.pwr.voltage_adjustable:
+                print('tx',self._hw.tx.voltage)
                 if self._hw.tx.voltage != tx_volt:
                     self._hw.tx.voltage = tx_volt
             vab = self._hw.tx.pwr.voltage
+            print(vab)
             time.sleep(0.2)
 
             # self.switch_mux_on(quad, bypass_check=True)  # put before raising the pins (otherwise conflict i2c)