diff --git a/.gitignore b/.gitignore
index 65b9e35..1b5b813 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
 *.csv
 *.dat
 __pycache__
+
+*.pyc
diff --git a/IsegLibrary.py b/IsegLibrary.py
index 9b92df0..a314248 100755
--- a/IsegLibrary.py
+++ b/IsegLibrary.py
@@ -126,6 +126,7 @@ def SwitchOnHV(ch, onOff):
   try :
     int(ch)
     int(onOff)
+    SendCmd(1, "outputSwitch.u" + str(ch) + " i " + str(10))
     return SendCmd(1, "outputSwitch.u" + str(ch) + " i " + str(onOff))
   except :
     print("either ch or onOff is not int")
diff --git a/IsegLibrary.pyc b/IsegLibrary.pyc
deleted file mode 100644
index c8bc3c2..0000000
Binary files a/IsegLibrary.pyc and /dev/null differ