diff --git a/.vscode/settings.json b/.vscode/settings.json
index 8f8faba..b4e875c 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -81,7 +81,8 @@
         "qcoreapplication": "cpp",
         "qcategoryaxis": "cpp",
         "qaction": "cpp",
-        "qthread": "cpp"
+        "qthread": "cpp",
+        "qlineseries": "cpp"
     },
     "files.autoGuessEncoding": true,
 }
\ No newline at end of file
diff --git a/libxsync b/libxsync
index 6f3e46f..f2cd0a7 160000
--- a/libxsync
+++ b/libxsync
@@ -1 +1 @@
-Subproject commit 6f3e46f8e2a119941a5d3a026f4d146728653786
+Subproject commit f2cd0a7edfa77b2d4927acaeff2f60613858102f
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 285728b..12770c1 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -503,7 +503,7 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWi
   });
   XsyncIns()->registerOnTimecodeMsgCallback([this](XsyncTimecode_t *timecode_msg) {  //
     XsyncTimecode_t timecode = *timecode_msg;
-    QString         text     = QString(fmt("%02d:%02d:%02d:%02d", timecode.hour, timecode.minute, timecode.second, timecode.frame));
+    QString         text     = QString(fmt("%02d:%02d:%02d:%02d:%02d", timecode.hour, timecode.minute, timecode.second, timecode.frame, timecode.subframe));
     updateUI_timeCodeInfo_signal(text);
   });
 
@@ -947,3 +947,6 @@ void MainWindow::on_NetworkConfig_storage_clicked() {
 void MainWindow::on_GenNewMac_clicked() { DO_XSYNC_FUNC(XsyncIns()->generatorNewMac()); }
 void MainWindow::on_FactoryReset_clicked() { DO_XSYNC_FUNC(XsyncIns()->factoryReset()); }
 void MainWindow::on_Reboot_clicked() { DO_XSYNC_FUNC(XsyncIns()->reboot()); }
+
+void MainWindow::on_InternalSigSrouce_start_clicked() { DO_XSYNC_FUNC(XsyncIns()->InternalSigSrouce_start()); }
+void MainWindow::on_InternalSigSrouce_stop_clicked() { DO_XSYNC_FUNC(XsyncIns()->InternalSigSrouce_stop()); }
diff --git a/mainwindow.h b/mainwindow.h
index 1662f26..f2a2942 100644
--- a/mainwindow.h
+++ b/mainwindow.h
@@ -123,7 +123,11 @@ class MainWindow : public QMainWindow {
   void on_FactoryReset_clicked();
   void on_Reboot_clicked();
 
- signals:
+  void on_InternalSigSrouce_start_clicked();
+
+  void on_InternalSigSrouce_stop_clicked();
+
+signals:
   void append_log_signal(QString str);
   void updateUI_timeCodeInfo_signal(QString);
   void updateUI_cameraSyncInfo_signal(QString);
diff --git a/mainwindow.ui b/mainwindow.ui
index a683d34..68b63aa 100644
--- a/mainwindow.ui
+++ b/mainwindow.ui
@@ -2720,6 +2720,32 @@
          </item>
         </layout>
        </widget>
+       <widget class="QPushButton" name="InternalSigSrouce_start">
+        <property name="geometry">
+         <rect>
+          <x>600</x>
+          <y>70</y>
+          <width>171</width>
+          <height>31</height>
+         </rect>
+        </property>
+        <property name="text">
+         <string>InternalSigSrouce_start</string>
+        </property>
+       </widget>
+       <widget class="QPushButton" name="InternalSigSrouce_stop">
+        <property name="geometry">
+         <rect>
+          <x>600</x>
+          <y>110</y>
+          <width>171</width>
+          <height>31</height>
+         </rect>
+        </property>
+        <property name="text">
+         <string>InternalSigSrouce_stop</string>
+        </property>
+       </widget>
       </widget>
      </widget>
     </item>