diff --git a/script/jitter_scan.py b/script/jitter_scan.py
index 434a869..a8ab5d2 100644
--- a/script/jitter_scan.py
+++ b/script/jitter_scan.py
@@ -1,8 +1,7 @@
 
 
 
-import  ch.psi.pshell.epics.ChannelDouble as PV
-import  ch.psi.pshell.device.ProcessVariable as PV2
+import  ch.psi.pshell.epics.ProcessVariable as PV
 
 latency = 0.3
 
@@ -23,8 +22,9 @@ print "Step = ", step
 
 # controlled variabales
 cv_rf_phase = PV2(SECTION + "-RLLE-DSP:PHASE-REFERENCE")
-a = cv_rf_phase.read()
-print "a= " , a
+cv_rf_phase.initialize()
+val = cv_rf_phase.read()
+print "val= " , val
 #cv_rf_amplt = ChannelDouble(SECTION + "-RLLE-DSP:AMPLT-REFERENCE")