diff --git a/acquisition/ioxos_data.py b/acquisition/ioxos_data.py
index e519187..61fe9c8 100644
--- a/acquisition/ioxos_data.py
+++ b/acquisition/ioxos_data.py
@@ -64,6 +64,7 @@ class Ioxostools:
         for (m, channel) in enumerate(channels):
             channel.add_callback(callback = cb_getdata, ch = channel, m=m)
         while True:
+            sleep(0.01)
             if np.mean(counters) == N_pulses-1:
                 break
 
diff --git a/xoptics/dcm.py b/xoptics/dcm.py
index 627b6f6..41b91b1 100755
--- a/xoptics/dcm.py
+++ b/xoptics/dcm.py
@@ -1,5 +1,7 @@
 from ..devices_general.motors import MotorRecord
 from epics import PV
+from ..devices_general.utilities import Changer
+from time import sleep
 
 class Double_Crystal_Mono:
     def __init__(self,Id):	
@@ -16,11 +18,17 @@ class Double_Crystal_Mono:
      self.moving = PV(Id+':MOVING')
      self._stop = PV(Id +':STOP.PROC')
 
+    def move_and_wait(self,value,checktime=.01):
+        self.energy_sp.put(value)
+        #sleep(.1)
+        while not self.moving:
+            sleep(checktime)
+
     def changeTo(self,value):
-     self.energy_sp.put(value)
+        self.energy_sp.put(value)
       
     def stop(self):
-     self._stop.put(1) 	
+        self._stop.put(1) 	
 
     def get_current_value(self):
      currentenergy = self.energy_rbk.get()