Tries to address vmax issue

ohmpi/ohmpi.py

@@ -584,9 +584,11 @@ class OhmPi(object):
             # log data to the data logger
             self.data_logger.info(dd)
 
+            # Discharge DPS capa (not working properly)
+            #TODO: For pwr_adjustable only and perhaps in a separate function (or at _hw level)
             self._hw.switch_mux(electrodes=quad[0:2], roles=['A', 'B'], state='on')
             self._hw.tx.polarity = 1
-            time.sleep(1.0)
+            time.sleep(2.0)
             self._hw.tx.polarity = 0
             self._hw.switch_mux(electrodes=quad[0:2], roles=['A', 'B'], state='off')
         else: