diff --git a/script/RFscan/SchottkyScan.py b/script/RFscan/SchottkyScan.py
index 8fa0019..66417cd 100644
--- a/script/RFscan/SchottkyScan.py
+++ b/script/RFscan/SchottkyScan.py
@@ -1,8 +1,8 @@
 import  ch.psi.pshell.epics.ControlledVariable as ControlledVariable
 
 if get_exec_pars().source == CommandSource.ui:
-    start   = -180.0
-    stop    = 180.0
+    start   = -30.0
+    stop    = 30.0
     step    = 5.0
     nb      = 1
     lat     = 0.100