diff --git a/schainpy/Model/Voltage.py b/schainpy/Model/Voltage.py
index 88b9a93..517d7c8 100644
--- a/schainpy/Model/Voltage.py
+++ b/schainpy/Model/Voltage.py
@@ -45,7 +45,7 @@ class Voltage(Data):
         
         self.flagResetProcessing = False
         
-        self.noise = noise
+        self.noise = 0 #noise
         
     def copy(self):
         obj = Voltage()