diff --git a/schainpy/model/data/jrodata.py b/schainpy/model/data/jrodata.py
index 961af38..5c44d60 100644
--- a/schainpy/model/data/jrodata.py
+++ b/schainpy/model/data/jrodata.py
@@ -86,8 +86,6 @@ def hildebrand_sekhon(data, navg):
         
         sumq += sortdata[j]**2
         
-        j += 1
-        
         if j > nums_min:
             rtest = float(j)/(j-1) + 1.0/navg
             if ((sumq*j) > (rtest*sump**2)):
@@ -95,7 +93,9 @@ def hildebrand_sekhon(data, navg):
                 sump  = sump - sortdata[j]
                 sumq =  sumq - sortdata[j]**2
                 cont = 0
-
+        
+        j += 1
+        
     lnoise = sump /j
     stdv = numpy.sqrt((sumq - lnoise**2)/(j - 1))
     return lnoise   
diff --git a/schainpy/model/io/jroIO_voltage.py b/schainpy/model/io/jroIO_voltage.py
index 5537f1f..296550c 100644
--- a/schainpy/model/io/jroIO_voltage.py
+++ b/schainpy/model/io/jroIO_voltage.py
@@ -344,16 +344,15 @@ class VoltageReader(JRODataReader, ProcessingUnit):
             If nTxs > 1 then one profile is divided by nTxs and number of total
             blocks is increased by nTxs (nProfiles *= nTxs)
             """
+            self.dataOut.flagDataAsBlock = False
+            
             if self.nTxs == 1:
-                self.dataOut.flagDataAsBlock = False
                 self.dataOut.data = self.datablock[:,self.profileIndex,:]
                 self.dataOut.profileIndex = self.profileIndex
                 
                 self.profileIndex += 1
                 
             else:
-                self.dataOut.flagDataAsBlock = False
-                
                 iniHei_ForThisTx = (self.txIndex)*int(self.processingHeaderObj.nHeights/self.nTxs)
                 endHei_ForThisTx = (self.txIndex+1)*int(self.processingHeaderObj.nHeights/self.nTxs)
                 
@@ -374,9 +373,9 @@ class VoltageReader(JRODataReader, ProcessingUnit):
             """
             self.dataOut.flagDataAsBlock = True
             self.dataOut.data = self.datablock
-            self.dataOut.profileIndex = self.processingHeaderObj.profilesPerBlock - 1
+            self.dataOut.profileIndex = self.processingHeaderObj.profilesPerBlock
             
-            self.profileIndex = self.processingHeaderObj.profilesPerBlock - 1
+            self.profileIndex = self.processingHeaderObj.profilesPerBlock
         
         self.dataOut.flagNoData = False
         
diff --git a/schainpy/model/proc/jroproc_voltage.py b/schainpy/model/proc/jroproc_voltage.py
index f8bbd49..2ad223c 100644
--- a/schainpy/model/proc/jroproc_voltage.py
+++ b/schainpy/model/proc/jroproc_voltage.py
@@ -626,7 +626,7 @@ class Decoder(Operation):
         
         return self.datadecTime
     
-    def run(self, dataOut, code=None, nCode=None, nBaud=None, mode = 0, osamp=None):
+    def run(self, dataOut, code=None, nCode=None, nBaud=None, mode = 0, osamp=None, times=None):
             
         if not self.isConfig:
             
diff --git a/schainpy/scripts/test_mst_blocks.py b/schainpy/scripts/test_mst_blocks.py
index dcdb7a6..4801eb6 100644
--- a/schainpy/scripts/test_mst_blocks.py
+++ b/schainpy/scripts/test_mst_blocks.py
@@ -5,7 +5,7 @@ import datetime
 path = os.path.split(os.getcwd())[0]
 path = os.path.split(path)[0]
 
-sys.path.append(path)
+sys.path.insert(0, path)
 
 from schainpy.controller import Project