diff --git a/script/phase_scan.py b/script/phase_scan.py
index a903f76..1a462e7 100755
--- a/script/phase_scan.py
+++ b/script/phase_scan.py
@@ -5,7 +5,7 @@ args = [prefix ]
 
 import  ch.psi.pshell.epics.ControlledVariable as ControlledVariable
 
-latency = 0.05
+latency = 0.3
 
 
 if get_context().source == CommandSource.ui:
@@ -31,7 +31,8 @@ print "Step = ", step
 #rf_phase_setpoint =  create_channel_device(prefix + ":SET-VSUM-PHASE", type = 'd', deviceName='Phase Setpoint')
 #rf_phase_readback =  create_channel_device(prefix + ":GET-VSUM-PHASE", type = 'd', deviceName='Phase Readback')
 
-rf_phase_var =  ControlledVariable("Phase", prefix + ":SET-VSUM-PHASE", prefix + ":GET-VSUM-PHASE")
+#rf_phase_var =  ControlledVariable("Phase", prefix + ":SET-VSUM-PHASE", prefix + ":GET-VSUM-PHASE")
+rf_phase_var =  ControlledVariable("Phase", prefix + ":SET-VSUM-PHASE", prefix + ":SET-VSUM-PHASE")
 (rf_phase_var.config.minValue, rf_phase_var.config.maxValue)= (-180.0, 180.0)
 rf_phase_var.config.resolution = 0.001
 rf_phase_var.initialize()