diff --git a/plugins/channelrx/demoddsd/dsddemod.cpp b/plugins/channelrx/demoddsd/dsddemod.cpp
index 4c0e57874..d7f3dfc4e 100644
--- a/plugins/channelrx/demoddsd/dsddemod.cpp
+++ b/plugins/channelrx/demoddsd/dsddemod.cpp
@@ -54,6 +54,7 @@ DSDDemod::DSDDemod(DeviceSourceAPI *deviceAPI) :
         m_audioFifo1(48000),
         m_audioFifo2(48000),
         m_scope(0),
+        m_scopeXY(0),
         m_scopeEnabled(true),
         m_dsdDecoder(),
         m_settingsMutex(QMutex::Recursive)
@@ -315,6 +316,11 @@ void DSDDemod::feed(const SampleVector::const_iterator& begin, const SampleVecto
         m_scope->feed(m_scopeSampleBuffer.begin(), m_scopeSampleBuffer.end(), true); // true = real samples for what it's worth
     }
 
+    if ((m_scopeXY != 0) && (m_scopeEnabled))
+    {
+        m_scopeXY->feed(m_scopeSampleBuffer.begin(), m_scopeSampleBuffer.end(), true); // true = real samples for what it's worth
+    }
+
 	m_settingsMutex.unlock();
 }
 
diff --git a/plugins/channelrx/demoddsd/dsddemod.h b/plugins/channelrx/demoddsd/dsddemod.h
index 046bab152..6a581ce2c 100644
--- a/plugins/channelrx/demoddsd/dsddemod.h
+++ b/plugins/channelrx/demoddsd/dsddemod.h
@@ -94,6 +94,7 @@ public:
 	~DSDDemod();
 	virtual void destroy() { delete this; }
 	void setScopeSink(BasebandSampleSink* sampleSink) { m_scope = sampleSink; }
+	void setScopeXYSink(BasebandSampleSink* sampleSink) { m_scopeXY = sampleSink; }
 
 	void configureMyPosition(MessageQueue* messageQueue, float myLatitude, float myLongitude);
 
@@ -193,6 +194,7 @@ private:
 	AudioFifo m_audioFifo1;
     AudioFifo m_audioFifo2;
 	BasebandSampleSink* m_scope;
+	BasebandSampleSink* m_scopeXY;
 	bool m_scopeEnabled;
 
 	DSDDecoder m_dsdDecoder;
diff --git a/plugins/channelrx/demoddsd/dsddemodgui.cpp b/plugins/channelrx/demoddsd/dsddemodgui.cpp
index ec6966bd4..4a9e52dd0 100644
--- a/plugins/channelrx/demoddsd/dsddemodgui.cpp
+++ b/plugins/channelrx/demoddsd/dsddemodgui.cpp
@@ -20,13 +20,11 @@
 #include <device/devicesourceapi.h>
 #include "device/deviceuiset.h"
 #include <dsp/downchannelizer.h>
-#include <QDockWidget>
-#include <QMainWindow>
-#include <QDebug>
 
 #include "dsp/threadedbasebandsamplesink.h"
 #include "ui_dsddemodgui.h"
 #include "dsp/scopevis.h"
+#include "dsp/scopevisxy.h"
 #include "gui/glscope.h"
 #include "plugin/pluginapi.h"
 #include "util/simpleserializer.h"
@@ -38,6 +36,12 @@
 #include "dsddemodbaudrates.h"
 #include "dsddemod.h"
 
+#include <QDockWidget>
+#include <QMainWindow>
+#include <QDebug>
+
+#include <complex>
+
 DSDDemodGUI* DSDDemodGUI::create(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, BasebandSampleSink *rxChannel)
 {
     DSDDemodGUI* gui = new DSDDemodGUI(pluginAPI, deviceUISet, rxChannel);
@@ -270,14 +274,32 @@ DSDDemodGUI::DSDDemodGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, Baseban
 	m_tickCount(0)
 {
 	ui->setupUi(this);
+	ui->screenTV->setColor(true);
+	ui->screenTV->resizeTVScreen(200,200);
+	ui->screenTV->setRenderImmediate(true);
 	setAttribute(Qt::WA_DeleteOnClose, true);
 
 	connect(this, SIGNAL(widgetRolled(QWidget*,bool)), this, SLOT(onWidgetRolled(QWidget*,bool)));
     connect(this, SIGNAL(customContextMenuRequested(const QPoint &)), this, SLOT(onMenuDialogCalled(const QPoint &)));
 
 	m_scopeVis = new ScopeVis(SDR_RX_SCALEF, ui->glScope);
+	m_scopeVisXY = new ScopeVisXY(ui->screenTV);
+	m_scopeVisXY->setScale(2.0);
+	m_scopeVisXY->setPixelsPerFrame(4001);
+	m_scopeVisXY->setPlotRGB(qRgb(0, 220, 250));
+	m_scopeVisXY->setGridRGB(qRgb(255, 255, 128));
+
+	for (float x = -0.84; x < 1.0; x += 0.56)
+	{
+		for (float y = -0.84; y < 1.0; y += 0.56)
+		{
+			m_scopeVisXY->addGraticulePoint(std::complex<float>(x, y));
+		}
+	}
+
 	m_dsdDemod = (DSDDemod*) rxChannel; //new DSDDemod(m_deviceUISet->m_deviceSourceAPI);
 	m_dsdDemod->setScopeSink(m_scopeVis);
+	m_dsdDemod->setScopeXYSink(m_scopeVisXY);
 	m_dsdDemod->setMessageQueueToGUI(getInputMessageQueue());
 
     ui->glScope->setSampleRate(48000);
@@ -329,6 +351,7 @@ DSDDemodGUI::~DSDDemodGUI()
 {
     m_deviceUISet->removeRxChannelInstance(this);
 	delete m_dsdDemod; // TODO: check this: when the GUI closes it has to delete the demodulator
+	delete m_scopeVisXY;
 	delete m_scopeVis;
 	delete ui;
 }
diff --git a/plugins/channelrx/demoddsd/dsddemodgui.h b/plugins/channelrx/demoddsd/dsddemodgui.h
index c79648b44..a7269dfff 100644
--- a/plugins/channelrx/demoddsd/dsddemodgui.h
+++ b/plugins/channelrx/demoddsd/dsddemodgui.h
@@ -33,6 +33,7 @@ class PluginAPI;
 class DeviceUISet;
 class BasebandSampleSink;
 class ScopeVis;
+class ScopeVisXY;
 class DSDDemod;
 
 namespace Ui {
@@ -81,6 +82,7 @@ private:
 	SignalFormat m_signalFormat;
 
     ScopeVis* m_scopeVis;
+    ScopeVisXY* m_scopeVisXY;
 
 	DSDDemod* m_dsdDemod;
 	bool m_enableCosineFiltering;
diff --git a/plugins/channelrx/demoddsd/dsddemodgui.ui b/plugins/channelrx/demoddsd/dsddemodgui.ui
index c05e60e6f..244b5228d 100644
--- a/plugins/channelrx/demoddsd/dsddemodgui.ui
+++ b/plugins/channelrx/demoddsd/dsddemodgui.ui
@@ -62,16 +62,7 @@
     <property name="spacing">
      <number>3</number>
     </property>
-    <property name="leftMargin">
-     <number>2</number>
-    </property>
-    <property name="topMargin">
-     <number>2</number>
-    </property>
-    <property name="rightMargin">
-     <number>2</number>
-    </property>
-    <property name="bottomMargin">
+    <property name="margin">
      <number>2</number>
     </property>
     <item>
@@ -954,33 +945,50 @@
     <string>Discriminator Scope</string>
    </property>
    <layout class="QVBoxLayout" name="scopeContainer">
-    <property name="leftMargin">
-     <number>2</number>
-    </property>
-    <property name="topMargin">
-     <number>2</number>
-    </property>
-    <property name="rightMargin">
-     <number>2</number>
-    </property>
-    <property name="bottomMargin">
+    <property name="margin">
      <number>2</number>
     </property>
     <item>
-     <widget class="GLScope" name="glScope" native="true">
-      <property name="minimumSize">
-       <size>
-        <width>632</width>
-        <height>250</height>
-       </size>
-      </property>
-      <property name="font">
-       <font>
-        <family>Monospace</family>
-        <pointsize>8</pointsize>
-       </font>
-      </property>
-     </widget>
+     <layout class="QHBoxLayout" name="horizontalLayout">
+      <item>
+       <widget class="GLScope" name="glScope" native="true">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Maximum" vsizetype="Maximum">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="minimumSize">
+         <size>
+          <width>432</width>
+          <height>200</height>
+         </size>
+        </property>
+        <property name="font">
+         <font>
+          <family>Monospace</family>
+          <pointsize>8</pointsize>
+         </font>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="TVScreen" name="screenTV" native="true">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Maximum" vsizetype="Maximum">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="minimumSize">
+         <size>
+          <width>200</width>
+          <height>200</height>
+         </size>
+        </property>
+       </widget>
+      </item>
+     </layout>
     </item>
     <item>
      <widget class="GLScopeGUI" name="scopeGUI" native="true"/>
@@ -1024,6 +1032,12 @@
    <header>gui/valuedialz.h</header>
    <container>1</container>
   </customwidget>
+  <customwidget>
+   <class>TVScreen</class>
+   <extends>QWidget</extends>
+   <header>gui/tvscreen.h</header>
+   <container>1</container>
+  </customwidget>
  </customwidgets>
  <resources>
   <include location="../../../sdrgui/resources/res.qrc"/>
diff --git a/sdrgui/CMakeLists.txt b/sdrgui/CMakeLists.txt
index a893a5e8a..149fff50a 100644
--- a/sdrgui/CMakeLists.txt
+++ b/sdrgui/CMakeLists.txt
@@ -48,6 +48,7 @@ set(sdrgui_SOURCES
     dsp/scopevis.cpp
     dsp/scopevisng.cpp
     dsp/scopevismulti.cpp
+    dsp/scopevisxy.cpp
     dsp/spectrumvis.cpp
     dsp/spectrumscopecombovis.cpp
     dsp/spectrumscopengcombovis.cpp
@@ -105,6 +106,7 @@ set(sdrgui_HEADERS
     dsp/scopevis.h
     dsp/scopevisng.h
     dsp/scopevismulti.h
+    dsp/scopevisxy.h    
     dsp/spectrumvis.h
     dsp/spectrumscopecombovis.h
     dsp/spectrumscopengcombovis.h
diff --git a/sdrgui/dsp/scopevisxy.cpp b/sdrgui/dsp/scopevisxy.cpp
new file mode 100644
index 000000000..2758417e5
--- /dev/null
+++ b/sdrgui/dsp/scopevisxy.cpp
@@ -0,0 +1,111 @@
+///////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2018 F4EXB                                                      //
+// written by Edouard Griffiths                                                  //
+//                                                                               //
+// This program is free software; you can redistribute it and/or modify          //
+// it under the terms of the GNU General Public License as published by          //
+// the Free Software Foundation as version 3 of the License, or                  //
+//                                                                               //
+// This program is distributed in the hope that it will be useful,               //
+// but WITHOUT ANY WARRANTY; without even the implied warranty of                //
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the                  //
+// GNU General Public License V3 for more details.                               //
+//                                                                               //
+// You should have received a copy of the GNU General Public License             //
+// along with this program. If not, see <http://www.gnu.org/licenses/>.          //
+///////////////////////////////////////////////////////////////////////////////////
+
+#include "scopevisxy.h"
+#include "gui/tvscreen.h"
+#include <unistd.h>
+
+ScopeVisXY::ScopeVisXY(TVScreen *tvScreen) :
+	m_tvScreen(tvScreen),
+	m_scale(1.0),
+	m_cols(0),
+	m_rows(0),
+	m_pixelsPerFrame(480),
+	m_pixelCount(0),
+	m_plotRGB(qRgb(0, 255, 0)),
+	m_gridRGB(qRgb(255, 255 ,255))
+{
+	setObjectName("ScopeVisXY");
+}
+
+ScopeVisXY::~ScopeVisXY()
+{}
+
+void ScopeVisXY::feed(const SampleVector::const_iterator& cbegin, const SampleVector::const_iterator& end,
+		bool positiveOnly __attribute__((unused)))
+{
+	SampleVector::const_iterator begin(cbegin);
+
+	while (begin < end)
+	{
+		float x = m_scale * (begin->m_real/SDR_RX_SCALEF);
+		float y = m_scale * (begin->m_imag/SDR_RX_SCALEF);
+
+		int row = m_rows * ((1.0 - y) / 2.0);
+		int col = m_cols * ((1.0 + x) / 2.0);
+
+		row = row < 0 ? 0 : row >= m_rows ? m_rows-1 : row;
+		col = col < 0 ? 0 : col >= m_cols ? m_cols-1 : col;
+
+		m_tvScreen->selectRow(row);
+		m_tvScreen->setDataColor(col, qRed(m_plotRGB), qGreen(m_plotRGB), qBlue(m_plotRGB));
+		m_pixelCount++;
+
+		if (m_pixelCount == m_pixelsPerFrame)
+		{
+			drawGraticule();
+			m_tvScreen->renderImage(0);
+			usleep(10000);
+			m_tvScreen->getSize(m_cols, m_rows);
+			m_tvScreen->resetImage();
+			m_pixelCount = 0;
+		}
+
+		++begin;
+	}
+}
+
+void ScopeVisXY::start()
+{
+}
+
+void ScopeVisXY::stop()
+{
+}
+
+bool ScopeVisXY::handleMessage(const Message& message __attribute__((unused)))
+{
+	return false;
+}
+
+void ScopeVisXY::addGraticulePoint(const std::complex<float>& z) {
+	m_graticule.push_back(z);
+}
+
+void ScopeVisXY::clearGraticule() {
+	m_graticule.clear();
+}
+
+void ScopeVisXY::drawGraticule()
+{
+	std::vector<std::complex<float> >::const_iterator grIt = m_graticule.begin();
+
+	for (; grIt != m_graticule.end(); ++grIt)
+	{
+		int y = m_rows * ((1.0 - grIt->imag()) / 2.0);
+		int x = m_cols * ((1.0 + grIt->real()) / 2.0);
+
+        for (int d = -4; d <= 4; ++d)
+        {
+        	m_tvScreen->selectRow(y + d);
+        	m_tvScreen->setDataColor(x, qRed(m_gridRGB), qGreen(m_gridRGB), qBlue(m_gridRGB));
+        	m_tvScreen->selectRow(y);
+        	m_tvScreen->setDataColor(x + d, qRed(m_gridRGB), qGreen(m_gridRGB), qBlue(m_gridRGB));
+        }
+	}
+}
+
diff --git a/sdrgui/dsp/scopevisxy.h b/sdrgui/dsp/scopevisxy.h
new file mode 100644
index 000000000..bea51e3c5
--- /dev/null
+++ b/sdrgui/dsp/scopevisxy.h
@@ -0,0 +1,64 @@
+///////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2018 F4EXB                                                      //
+// written by Edouard Griffiths                                                  //
+//                                                                               //
+// This program is free software; you can redistribute it and/or modify          //
+// it under the terms of the GNU General Public License as published by          //
+// the Free Software Foundation as version 3 of the License, or                  //
+//                                                                               //
+// This program is distributed in the hope that it will be useful,               //
+// but WITHOUT ANY WARRANTY; without even the implied warranty of                //
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the                  //
+// GNU General Public License V3 for more details.                               //
+//                                                                               //
+// You should have received a copy of the GNU General Public License             //
+// along with this program. If not, see <http://www.gnu.org/licenses/>.          //
+///////////////////////////////////////////////////////////////////////////////////
+
+#ifndef SDRGUI_DSP_SCOPEVISXY_H_
+#define SDRGUI_DSP_SCOPEVISXY_H_
+
+#include "dsp/basebandsamplesink.h"
+#include "util/export.h"
+#include "util/message.h"
+
+#include <QColor>
+#include <vector>
+#include <complex>
+
+class TVScreen;
+
+class SDRGUI_API ScopeVisXY : public BasebandSampleSink {
+public:
+	ScopeVisXY(TVScreen *tvScreen);
+	virtual ~ScopeVisXY();
+
+	virtual void feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, bool positiveOnly);
+	virtual void start();
+	virtual void stop();
+	virtual bool handleMessage(const Message& message);
+
+	void setScale(float scale) { m_scale = scale; }
+	void setPixelsPerFrame(int pixelsPerFrame) { m_pixelsPerFrame = pixelsPerFrame; }
+	void setPlotRGB(const QRgb& plotRGB) { m_plotRGB = plotRGB; }
+	void setGridRGB(const QRgb& gridRGB) { m_gridRGB = gridRGB; }
+
+	void addGraticulePoint(const std::complex<float>& z);
+	void clearGraticule();
+
+private:
+	void drawGraticule();
+
+	TVScreen *m_tvScreen;
+	float m_scale;
+	int m_cols;
+	int m_rows;
+	int m_pixelsPerFrame;
+	int m_pixelCount;
+	QRgb m_plotRGB;
+	QRgb m_gridRGB;
+	std::vector<std::complex<float> > m_graticule;
+};
+
+
+#endif /* SDRGUI_DSP_SCOPEVISXY_H_ */
diff --git a/sdrgui/gui/glshadertvarray.h b/sdrgui/gui/glshadertvarray.h
index d7b881140..408a62ef4 100644
--- a/sdrgui/gui/glshadertvarray.h
+++ b/sdrgui/gui/glshadertvarray.h
@@ -45,6 +45,7 @@ public:
     void setColor(bool blnColor) { m_blnColor = blnColor; }
     void InitializeGL(int intCols, int intRows);
     void ResizeContainer(int intCols, int intRows);
+    void getSize(int& intCols, int& intRows) const { intCols = m_intCols, intRows = m_intRows; }
     void Cleanup();
     QRgb *GetRowBuffer(int intRow);
     void RenderPixels(unsigned char *chrData);
diff --git a/sdrgui/gui/tvscreen.cpp b/sdrgui/gui/tvscreen.cpp
index 729d1bacf..729421a06 100644
--- a/sdrgui/gui/tvscreen.cpp
+++ b/sdrgui/gui/tvscreen.cpp
@@ -38,6 +38,7 @@ TVScreen::TVScreen(bool blnColor, QWidget* parent) :
     m_blnConfigChanged = false;
     m_blnDataChanged = false;
     m_blnGLContextInitialized = false;
+    m_blnRenderImmediate = false;
 
     //Par défaut
     m_intAskedCols = TV_COLS;
@@ -69,7 +70,10 @@ void TVScreen::renderImage(unsigned char * objData)
 {
     m_chrLastData = objData;
     m_blnDataChanged = true;
-    //update();
+
+    if (m_blnRenderImmediate) {
+    	update();
+    }
 }
 
 void TVScreen::resetImage()
@@ -83,6 +87,11 @@ void TVScreen::resizeTVScreen(int intCols, int intRows)
     m_intAskedRows = intRows;
 }
 
+void TVScreen::getSize(int& intCols, int& intRows) const
+{
+	m_objGLShaderArray.getSize(intCols, intRows);
+}
+
 void TVScreen::initializeGL()
 {
     m_objMutex.lock();
@@ -209,7 +218,7 @@ bool TVScreen::setDataColor(int intCol, int intRed, int intGreen, int intBlue)
 {
     if (m_blnGLContextInitialized)
     {
-        return m_objGLShaderArray.SetDataColor(intCol, qRgb(intRed, intGreen, intBlue));
+        return m_objGLShaderArray.SetDataColor(intCol, qRgb(intBlue, intGreen, intRed)); // FIXME: blue <> red inversion in shader
     }
     else
     {
diff --git a/sdrgui/gui/tvscreen.h b/sdrgui/gui/tvscreen.h
index 5676f23bc..da19c653d 100644
--- a/sdrgui/gui/tvscreen.h
+++ b/sdrgui/gui/tvscreen.h
@@ -46,12 +46,14 @@ public:
 
     void setColor(bool blnColor);
     void resizeTVScreen(int intCols, int intRows);
+    void getSize(int& intCols, int& intRows) const;
     void renderImage(unsigned char * objData);
     QRgb* getRowBuffer(int intRow);
     void resetImage();
 
     bool selectRow(int intLine);
     bool setDataColor(int intCol,int intRed, int intGreen, int intBlue);
+    void setRenderImmediate(bool blnRenderImmediate) { m_blnRenderImmediate = blnRenderImmediate; }
 
     void connectTimer(const QTimer& timer);
 
@@ -74,6 +76,7 @@ private:
     QMutex m_objMutex;
     bool m_blnDataChanged;
     bool m_blnConfigChanged;
+    bool m_blnRenderImmediate;
 
     GLShaderTVArray m_objGLShaderArray;