diff --git a/script/test/otf_test.py b/script/test/otf_test.py
index 14b8978..ac5d3ff 100644
--- a/script/test/otf_test.py
+++ b/script/test/otf_test.py
@@ -18,7 +18,7 @@ while loop_count < nr_loops:
 nr_loops=5
 loop_count = 0
 while loop_count < nr_loops:
-    otf(start=520, end=570, time=5, delay=5, mode='LINEAR', alpha = 0.0, offset=0.0, name='pshell-test')
+    otf(start=270, end=320, time=5, delay=5, mode='LINEAR', alpha = 0.0, offset=0.0, name='pshell-test')
     loop_count = loop_count + 1
 
 #     '''
\ No newline at end of file