diff --git a/ProductFunctionTester/Main_Form.vb b/ProductFunctionTester/Main_Form.vb
index 7cf03ed..5fbb60c 100644
--- a/ProductFunctionTester/Main_Form.vb
+++ b/ProductFunctionTester/Main_Form.vb
@@ -10,7 +10,7 @@ Imports uPLibrary.Networking.M2Mqtt
 
 Public Class Main_Form
     Public Program_Name As String = "DUALSONIC_Multi_Function_Tester Ver."
-    Public Program_Version As String = "2.2.2"
+    Public Program_Version As String = "2.2.3"
 
     ''데이터 베이스 테이블 목록
 
@@ -4834,7 +4834,8 @@ NormalEnd:
         End If
 
 startFail:
-        myscope.IO.Clear()
+        ScopeClear()
+        SpecClear()
         txbWindow.AppendText("[" & MeasureTimeAll(MeasEnd) & "ms] Test Play" & vbCrLf)
     End Sub
 
@@ -4966,7 +4967,8 @@ processEnd:
         Jig_End()
 
 startFail:
-        myscope.IO.Clear()
+        ScopeClear()
+        SpecClear()
         txbWindow.AppendText("[" & MeasureTimeAll(MeasEnd) & "ms] Test Play" & vbCrLf)
     End Sub
 
@@ -5126,7 +5128,8 @@ ProcessEnd:
         Jig_End()
 
 NormalEnd:
-        myscope.IO.Clear()
+        ScopeClear()
+        SpecClear()
         txbWindow.AppendText("[" & MeasureTimeAll(MeasEnd) & "ms] Test Play" & vbCrLf)
     End Sub
 
@@ -5351,7 +5354,8 @@ processEnd:
         Jig_End()
 
 ErrorEnd:
-        myscope.IO.Clear()
+        ScopeClear()
+        SpecClear()
         txbWindow.AppendText("[" & MeasureTimeAll(MeasEnd) & "ms] Test Play" & vbCrLf)
     End Sub
 
@@ -5556,7 +5560,8 @@ processEnd:
         End If
         Jig_End()
 ErrorEnd:
-        myscope.IO.Clear()
+        ScopeClear()
+        SpecClear()
         txbWindow.AppendText("[" & MeasureTimeAll(MeasEnd) & "ms] Test Play" & vbCrLf)
     End Sub
 
@@ -5692,7 +5697,8 @@ processEnd:
         Jig_End()
 
 ErrorEnd:
-        myscope.IO.Clear()
+        ScopeClear()
+        SpecClear()
         txbWindow.AppendText("[" & MeasureTimeAll(MeasEnd) & "ms] Test Play" & vbCrLf)
     End Sub
 
@@ -5837,7 +5843,8 @@ ProcessEnd:
         End If
         Jig_End()
 NormalEnd:
-        myscope.IO.Clear()
+        ScopeClear()
+        SpecClear()
         Try
             If TestError = False Then
                 Jig_End()  ' 지그 전원 차단
@@ -5987,7 +5994,8 @@ processEnd:
         Jig_End()
 
 ErrorEnd:
-        myscope.IO.Clear()
+        ScopeClear()
+        SpecClear()
         txbWindow.AppendText("[" & MeasureTimeAll(MeasEnd) & "ms] Test Play" & vbCrLf)
     End Sub
 
@@ -6181,8 +6189,8 @@ ProcessEnd:
         End If
         Jig_End()
 NormalEnd:
-        myscope.IO.Clear()
-        'txbWindow.AppendText("[" & MeasureTimeAll(MeasEnd) & "ms] Test Play" & vbCrLf)
+        ScopeClear()
+        SpecClear()
 
         Try
             If TestError = False Then
@@ -6194,7 +6202,6 @@ NormalEnd:
             txbWindow.AppendText("정상 종료 처리 중 오류: " & normalEx.Message & vbCrLf)
         End Try
 
-        'myscope.IO.Clear()
         txbWindow.AppendText("[" & MeasureTimeAll(MeasEnd) & "ms] Test Play" & vbCrLf)
     End Sub
     Private Sub ldmVrmsFunction()
@@ -6322,7 +6329,8 @@ RunSuccess:
 ProcessEnd:
         Jig_End()
 NormalEnd:
-        myscope.IO.Clear()
+        ScopeClear()
+        SpecClear()
 
         Try
             If TestError = False Then
@@ -6334,7 +6342,7 @@ NormalEnd:
             txbWindow.AppendText("정상 종료 처리 중 오류: " & normalEx.Message & vbCrLf)
         End Try
 
-        'myscope.IO.Clear()
+        'ScopeClear()
         txbWindow.AppendText("[" & MeasureTimeAll(MeasEnd) & "ms] Test Play" & vbCrLf)
     End Sub
 
@@ -6592,6 +6600,8 @@ ProcessEnd:
         Jig_End()
 
 NormalEnd:
+        ScopeClear()
+        SpecClear()
         txbWindow.AppendText("[" & MeasureTimeAll(MeasEnd) & "ms] Test Play" & vbCrLf)
     End Sub
 
@@ -6766,7 +6776,8 @@ ProcessEnd:
 
 NormalEnd:
         txbWindow.AppendText("[" & MeasureTimeAll(MeasEnd) & "ms] Test Play" & vbCrLf)
-        myscope.IO.Clear()
+        ScopeClear()
+        SpecClear()
     End Sub
 
 
@@ -7033,7 +7044,8 @@ ProcessEnd:
         End If
         Jig_End()
 NormalEnd:
-        myscope.IO.Clear()
+        ScopeClear()
+        SpecClear()
         txbWindow.AppendText("[" & MeasureTimeAll(MeasEnd) & "ms] Test Play" & vbCrLf)
     End Sub
 
@@ -7172,7 +7184,8 @@ ProcessEnd:
         End If
         Jig_End()
 startFail:
-        myscope.IO.Clear()
+        ScopeClear()
+        SpecClear()
         txbWindow.AppendText("[" & MeasureTimeAll(MeasEnd) & "ms] Test Play" & vbCrLf)
     End Sub
 
@@ -7308,7 +7321,8 @@ ProcessEnd:
         Jig_End()
 
 NormalEnd:
-        myscope.IO.Clear()
+        ScopeClear()
+        SpecClear()
         txbWindow.AppendText("[" & MeasureTimeAll(MeasEnd) & "ms] Test Play" & vbCrLf)
     End Sub
 
@@ -7639,7 +7653,8 @@ NormalEnd:
 NormalEnd:
         FailMain()
         If formType = formTypeList.prdRFMCEP Then
-            myscope.IO.Clear()
+            ScopeClear()
+            SpecClear()
         End If
 
         Exit Sub
@@ -7647,7 +7662,8 @@ NormalEnd:
 ProcessEnd:
         FailMain()
         Jig_End()
-        myscope.IO.Clear()
+        ScopeClear()
+        SpecClear()
     End Sub
 
     Private Function CountChanage() As Boolean
@@ -10112,7 +10128,7 @@ WR_File_Error:
                     End If
                     If McUseYn = True And HifuUseYn = False Then
                         comboBoxVerificationStep.Items.Add(New DictionaryEntry("수입검사(RF/EP/MC)", "iqcRFEPMC")) ''맥시멈 생산 화면
-                        comboBoxVerificationStep.Items.Add(New DictionaryEntry("생산1-2(RF/MC)", "prdRFMC")) ''맥시멈 생산 화면
+                        comboBoxVerificationStep.Items.Add(New DictionaryEntry("생산1(RF/MC)", "prdRFMC")) ''맥시멈 생산 화면
                     End If
                     If EpUseYn = True And (HifuUseYn = False And LdmUseYn = False) Then
                         comboBoxVerificationStep.Items.Add(New DictionaryEntry("생산1-1(EP)", "prdEP")) ''맥시멈 hf 생산 화면
diff --git a/ProductFunctionTester/ScopeMoudule.vb b/ProductFunctionTester/ScopeMoudule.vb
index 36a45d5..b8acc1c 100644
--- a/ProductFunctionTester/ScopeMoudule.vb
+++ b/ProductFunctionTester/ScopeMoudule.vb
@@ -1,4 +1,4 @@
-Module ScopeMoudule
+Module ScopeMoudule
     Public myMgr As Ivi.Visa.Interop.ResourceManager
     Public myscope As Ivi.Visa.Interop.FormattedIO488
 
@@ -115,23 +115,15 @@
         Return ""
     End Function
 
-    'Private Sub CheckInstrumentErrors()
-    '    Dim strerrval As String
-    '    Dim strout As String = ""
-
-    '    myscope.WriteString(":SYSTem:ERRor?")
-    '    strerrval = myscope.ReadString
-    '    While Val(strerrval) <> 0
-    '        strout = "INST Error: " + strerrval
-    '        myscope.WriteString(":SYSTem:ERRor?")
-    '        strerrval = myscope.ReadString
-    '    End While
-
-    '    If Not strout = "" Then
-    '        MsgBox(strout, vbExclamation, "INST Error Messages")
-    '        myscope.FlushWrite(False)
-    '        myscope.FlushRead()
-    '    End If
-    'End Sub
+    ''' <summary>스코프 버퍼 초기화. 연결된 경우에만 동작.</summary>
+    Public Sub ScopeClear()
+        Try
+            If myscope IsNot Nothing AndAlso myscope.IO IsNot Nothing Then
+                myscope.IO.Clear()
+            End If
+        Catch
+            ' 연결 해제 등으로 접근 불가 시 무시
+        End Try
+    End Sub
 
 End Module
diff --git a/ProductFunctionTester/SpectrumModule.vb b/ProductFunctionTester/SpectrumModule.vb
index e87c483..654616e 100644
--- a/ProductFunctionTester/SpectrumModule.vb
+++ b/ProductFunctionTester/SpectrumModule.vb
@@ -1,4 +1,4 @@
-Module SpectrumModule
+Module SpectrumModule
     Private myMgr As Ivi.Visa.Interop.ResourceManager
     Private mySpec As Ivi.Visa.Interop.FormattedIO488
 
@@ -77,4 +77,15 @@
         Return ""
     End Function
 
+    ''' <summary>스펙트럼 분석기 버퍼 초기화. 연결된 경우에만 동작.</summary>
+    Public Sub SpecClear()
+        Try
+            If mySpec IsNot Nothing AndAlso mySpec.IO IsNot Nothing Then
+                mySpec.IO.Clear()
+            End If
+        Catch
+            ' 연결 해제 등으로 접근 불가 시 무시
+        End Try
+    End Sub
+
 End Module