minor correction to avoid a change in AO when scaning from 0 to 0

myWidgets.py

@@ -96,7 +96,7 @@ class anal_control_signal(QWidget):
     def scanEvent(self):
         if float(self.scan_step) < float(self.scan_sb_start.val)  or float(self.scan_step) > float(self.scan_sb_stop.val):
             self.scan_direction = (-1) * self.scan_direction
-            
+         
         self.scan_step = self.scan_step + self.scan_direction
         self.AO.set_out(self.scan_step)
         
@@ -151,10 +151,11 @@ class anal_control_signal(QWidget):
             else:
                 self.sb.setEnabled(False)
                 self.scan_button.setStyleSheet("background-color: green")
+                self.PbarTimer.start(dt*1e3)
                 self.ScanTimer.start(dt*1e3)
                 self.scan_button.setText('Scanning')
             
-                self.PbarTimer.start(dt*1e3)
+