diff --git a/spwplugin/StarDundee/stardundeegui.cpp b/spwplugin/StarDundee/stardundeegui.cpp
--- a/spwplugin/StarDundee/stardundeegui.cpp
+++ b/spwplugin/StarDundee/stardundeegui.cpp
@@ -34,7 +34,8 @@ StarDundeeGUI::StarDundeeGUI(QWidget *pa
     connect(this->ui->selectBrickCmbx,SIGNAL(currentIndexChanged(int)),this,SIGNAL(brickSelectionChanged(int)));
     connect(this->ui->selectLinkCmbx,SIGNAL(currentIndexChanged(int)),this,SIGNAL(linkNumberSelectionChanged(int)));
     connect(this->ui->setLinkSpeedCmbx,SIGNAL(currentIndexChanged(QString)),this,SIGNAL(linkSpeedSelectionChanged(QString)));
-    connect(this->ui->sourceAddressLineEdit,SIGNAL(textChanged(QString)),this,SIGNAL(destinationKeyChanged(QString)));
+//    connect(this->ui->sourceAddressLineEdit,SIGNAL(textChanged(QString)),this,SIGNAL(destinationKeyChanged(QString)));
+    connect(this->ui->sourceAddressLineEdit,SIGNAL(textChanged(QString)),this,SIGNAL(sourceLogicalAddressChanged(QString)));
     connect(this->ui->destinationAddressLineEdit,SIGNAL(textChanged(QString)),this,SIGNAL(rmapAddressChanged(QString)));
     connect(this->ui->destinationKeyLineEdit,SIGNAL(textChanged(QString)),this,SIGNAL(rmapKeyChanged(QString)));
     connect(this->ui->RMAPTimeoutLineEdit,SIGNAL(textChanged(QString)),this,SIGNAL(rmapTimeoutChanged(QString)));
@@ -218,14 +219,9 @@ void StarDundeeGUI::setDestinationKey(co
     }
 }
 
-void StarDundeeGUI::setTimecodeFrequency(const QString &frequency)
+void StarDundeeGUI::setTimecodeFrequency( double frequency )
 {
-    bool ok;
-    frequency.toDouble(&ok);
-    if(ok)
-    {
-        this->ui->timecodeFrequencyLineEdit->setText(frequency);
-    }
+    this->ui->timecodeFrequencyLineEdit->setText( QString::number( frequency, 'g', 3 ) );
 }
 
 void StarDundeeGUI::setStartSendingTimecodes( bool onOff )
diff --git a/spwplugin/StarDundee/stardundeegui.h b/spwplugin/StarDundee/stardundeegui.h
--- a/spwplugin/StarDundee/stardundeegui.h
+++ b/spwplugin/StarDundee/stardundeegui.h
@@ -48,6 +48,7 @@ signals:
     void linkNumberSelectionChanged(int linkIndex);
     void linkSpeedSelectionChanged(const QString & linkSpeed);
     void destinationKeyChanged(const QString & destKey);
+    void sourceLogicalAddressChanged( QString );
     void rmapAddressChanged(const QString & address);
     void rmapKeyChanged(const QString & key);
     void rmapTimeoutChanged(const QString & timeout);
@@ -64,7 +65,7 @@ public slots:
     void setDestinationKey(const QString & destKey);
     void setSourceAddress(const QString & address);
     void setDestinationAddress(const QString & address);
-    void setTimecodeFrequency(const QString &frequency);
+    void setTimecodeFrequency(double frequency);
     void setStartSendingTimecodes( bool onOff );
     void setRmapTimeout(const QString & timeout);
     int getAvailableBrickCount( void );
diff --git a/spwplugin/StarDundee/stardundeespw_usb.cpp b/spwplugin/StarDundee/stardundeespw_usb.cpp
--- a/spwplugin/StarDundee/stardundeespw_usb.cpp
+++ b/spwplugin/StarDundee/stardundeespw_usb.cpp
@@ -366,7 +366,7 @@ void stardundeeSPW_USB::makeGUI(socexplo
     connect(this,SIGNAL(BytesReceivedFromSpw(uint)),    ((StarDundeeGUI*)this->p_GUI),SLOT(updateNbReceivedBytesFromSpw(uint)));
     connect(this,SIGNAL(BytesTransmittedToSpw(uint)),   ((StarDundeeGUI*)this->p_GUI),SLOT(updateNbTransmittedBytesToSpw(uint)));
     connect(this,SIGNAL(CCSDSPacketTransmittedToSpw()), ((StarDundeeGUI*)this->p_GUI),SLOT(updateCCSDSPacketTransmittedToSpw()));
-    connect(this,SIGNAL(SetTimecodeFrequency(double)),  ((StarDundeeGUI*)this->p_GUI),SLOT(setTimecodeFrequency(QString)));
+    connect(this,SIGNAL(SetTimecodeFrequency(double)),  ((StarDundeeGUI*)this->p_GUI),SLOT(setTimecodeFrequency(double)));
     connect(this,SIGNAL(StartSendingTimecodes(bool)),   ((StarDundeeGUI*)this->p_GUI),SLOT(setStartSendingTimecodes(bool)));
 
     connect(this,SIGNAL(SendOneTimecode(unsigned char)),this->manager, SLOT(sendOneTimecode(unsigned char)));
@@ -1066,7 +1066,8 @@ void stardundeeSPW_USB_Manager::setTimec
     if (!USBSpaceWire_TC_SetAutoTickInFrequency(hDevice, freqCount) )
         SocExplorerEngine::message(this->plugin,"Could not set the tick-in frequency");
     else
-        SocExplorerEngine::message(this->plugin,"tick frequency set to " + QString::number(currentFrequency) +" Hz");
+        SocExplorerEngine::message(this->plugin,"tick frequency set to " + QString::number(currentFrequency) +" Hz"
+                                   + " (freqCount set to " + QString::number(freqCount) + ")" );
 }
 
 void stardundeeSPW_USB_Manager::sendOneTimecode( unsigned char nTimein )