diff --git a/script/keithley.py b/script/keithley.py
index adf1bda7..d43669fa 100644
--- a/script/keithley.py
+++ b/script/keithley.py
@@ -87,8 +87,8 @@ class Keithley(object):
         switch keithleys to free run.
         0.1 s polling and dwell time
         """
-        self.nplcCh.write(nplc)
-        self.navgCh.write(navg)
+        self.nplcCh.write(5.)
+        self.navgCh.write(1)
         self.scanCh.write(9)
         self.ttypeCh.write(0)