diff --git a/Documentation/UserManual/manual.pdf b/Documentation/UserManual/manual.pdf
index c833b45..be2e63b 100644
Binary files a/Documentation/UserManual/manual.pdf and b/Documentation/UserManual/manual.pdf differ
diff --git a/Documentation/UserManual/manual.tex b/Documentation/UserManual/manual.tex
index dbd1e46..eac74fe 100644
--- a/Documentation/UserManual/manual.tex
+++ b/Documentation/UserManual/manual.tex
@@ -245,6 +245,8 @@ This dock shows the debug output of the \vna{} (the same messages as on the inte
 \subsubsection{File Menu}
 Changing the default setup of the application can require a lot of configuration, especially if some of the more complicated math or de-embedding options are used. To simplify this process, setup-files can be saved and opened, which perform these steps automatically. A setup file contains all settings and configuration of these elements:
 \begin{itemize}
+\item Sweep and Acquisition settings (start/stop frequency, IF bandwidth, ...)
+\item The currently active mode (VNA, Signalgenerator or Spectrumanalyzer)
 \item Traces (Name, Color, Parameters, ...)
 \item Math operations applied to the traces
 \item Markers
diff --git a/Software/PC_Application/Generator/generator.cpp b/Software/PC_Application/Generator/generator.cpp
index 04dbc6f..8106618 100644
--- a/Software/PC_Application/Generator/generator.cpp
+++ b/Software/PC_Application/Generator/generator.cpp
@@ -40,6 +40,19 @@ void Generator::initializeDevice()
     updateDevice();
 }
 
+nlohmann::json Generator::toJSON()
+{
+    return central->toJSON();
+}
+
+void Generator::fromJSON(nlohmann::json j)
+{
+    if(j.is_null()) {
+        return;
+    }
+    central->fromJSON(j);
+}
+
 void Generator::updateDevice()
 {
     if(!window->getDevice() || Mode::getActiveMode() != this) {
diff --git a/Software/PC_Application/Generator/generator.h b/Software/PC_Application/Generator/generator.h
index 3418a1b..0897bf4 100644
--- a/Software/PC_Application/Generator/generator.h
+++ b/Software/PC_Application/Generator/generator.h
@@ -13,8 +13,8 @@ public:
     void initializeDevice() override;
 
     // Nothing to do for now
-    virtual nlohmann::json toJSON() override {return nlohmann::json();};
-    virtual void fromJSON(nlohmann::json j) override {Q_UNUSED(j)};
+    virtual nlohmann::json toJSON() override;
+    virtual void fromJSON(nlohmann::json j) override;
 
 private slots:
     void updateDevice();
diff --git a/Software/PC_Application/Generator/signalgenwidget.cpp b/Software/PC_Application/Generator/signalgenwidget.cpp
index 01b0218..4b93192 100644
--- a/Software/PC_Application/Generator/signalgenwidget.cpp
+++ b/Software/PC_Application/Generator/signalgenwidget.cpp
@@ -157,6 +157,44 @@ Protocol::GeneratorSettings SignalgeneratorWidget::getDeviceStatus()
     return s;
 }
 
+nlohmann::json SignalgeneratorWidget::toJSON()
+{
+    nlohmann::json j;
+    j["frequency"] = ui->frequency->value();
+    j["power"] = ui->levelSpin->value();
+    if(ui->EnablePort1->isChecked()) {
+        j["port"] = 1;
+    } else if(ui->EnablePort2->isChecked()) {
+        j["port"] = 2;
+    } else {
+        j["port"] = 0;
+    }
+    nlohmann::json sweep;
+    sweep["span"] = ui->span->value();
+    sweep["steps"] = ui->steps->value();
+    sweep["dwell"] = ui->dwell->value();
+    sweep["enabled"] = ui->EnabledSweep->isChecked();
+    j["sweep"] = sweep;
+    return j;
+}
+
+void SignalgeneratorWidget::fromJSON(nlohmann::json j)
+{
+    setFrequency(j.value("frequency", ui->frequency->value()));
+    setLevel(j.value("power", ui->levelSpin->value()));
+    setPort(j.value("port", 0));
+    if(j.contains("sweep")) {
+        auto sweep = j["sweep"];
+        // extract sweep settings, keeping current values as default
+        ui->span->setValue(sweep.value("span", ui->span->value()));
+        ui->steps->setValue(sweep.value("steps", ui->steps->value()));
+        ui->dwell->setValue(sweep.value("dwell", ui->dwell->value()));
+        ui->EnabledSweep->setChecked(sweep.value("enabled", false));
+    } else {
+        ui->EnabledSweep->setChecked(false);
+    }
+}
+
 void SignalgeneratorWidget::setLevel(double level)
 {
     // TODO constrain to frequency dependent levels
diff --git a/Software/PC_Application/Generator/signalgenwidget.h b/Software/PC_Application/Generator/signalgenwidget.h
index 90b72bf..1ebcec9 100644
--- a/Software/PC_Application/Generator/signalgenwidget.h
+++ b/Software/PC_Application/Generator/signalgenwidget.h
@@ -3,12 +3,13 @@
 
 #include <QWidget>
 #include "Device/device.h"
+#include "savable.h"
 
 namespace Ui {
 class SignalgeneratorWidget;
 }
 
-class SignalgeneratorWidget : public QWidget
+class SignalgeneratorWidget : public QWidget, public Savable
 {
     Q_OBJECT
 
@@ -17,6 +18,8 @@ public:
     ~SignalgeneratorWidget();
 
     Protocol::GeneratorSettings getDeviceStatus();
+    virtual nlohmann::json toJSON() override;
+    virtual void fromJSON(nlohmann::json j) override;
 
 signals:
     void SettingsChanged();
diff --git a/Software/PC_Application/Generator/signalgenwidget.ui b/Software/PC_Application/Generator/signalgenwidget.ui
index a1bfe94..a8da534 100644
--- a/Software/PC_Application/Generator/signalgenwidget.ui
+++ b/Software/PC_Application/Generator/signalgenwidget.ui
@@ -181,7 +181,7 @@
           <item row="0" column="1">
            <widget class="SIUnitEdit" name="span">
             <property name="text">
-             <string>0MHz</string>
+             <string/>
             </property>
            </widget>
           </item>
@@ -195,7 +195,7 @@
           <item row="1" column="1">
            <widget class="SIUnitEdit" name="steps">
             <property name="text">
-             <string>100</string>
+             <string/>
             </property>
            </widget>
           </item>
@@ -209,7 +209,7 @@
           <item row="2" column="1">
            <widget class="SIUnitEdit" name="dwell">
             <property name="text">
-             <string>100ms</string>
+             <string/>
             </property>
            </widget>
           </item>
@@ -226,7 +226,7 @@
              <bool>false</bool>
             </property>
             <property name="text">
-             <string>0MHz</string>
+             <string/>
             </property>
             <property name="readOnly">
              <bool>true</bool>
diff --git a/Software/PC_Application/SpectrumAnalyzer/spectrumanalyzer.cpp b/Software/PC_Application/SpectrumAnalyzer/spectrumanalyzer.cpp
index 79fe142..7778968 100644
--- a/Software/PC_Application/SpectrumAnalyzer/spectrumanalyzer.cpp
+++ b/Software/PC_Application/SpectrumAnalyzer/spectrumanalyzer.cpp
@@ -297,6 +297,37 @@ void SpectrumAnalyzer::initializeDevice()
 nlohmann::json SpectrumAnalyzer::toJSON()
 {
     nlohmann::json j;
+    // save current sweep/acquisition settings
+    nlohmann::json sweep;
+    nlohmann::json freq;
+    freq["start"] = settings.f_start;
+    freq["stop"] = settings.f_stop;
+    sweep["frequency"] = freq;
+    nlohmann::json acq;
+    acq["RBW"] = settings.RBW;
+    acq["window"] = WindowToString((Window) settings.WindowType).toStdString();
+    acq["detector"] = DetectorToString((Detector) settings.Detector).toStdString();
+    acq["signal ID"] = settings.SignalID ? true : false;
+    sweep["acquisition"] = acq;
+    nlohmann::json tracking;
+    tracking["enabled"] = settings.trackingGenerator ? true : false;
+    tracking["port"] = settings.trackingGeneratorPort ? 2 : 1;
+    tracking["offset"] = settings.trackingGeneratorOffset;
+    tracking["power"] = settings.trackingPower;
+    sweep["trackingGenerator"] = tracking;
+
+    if(normalize.active) {
+        nlohmann::json norm;
+        norm["start"] = normalize.f_start;
+        norm["stop"] = normalize.f_stop;
+        norm["points"] = normalize.points;
+        norm["level"] = normalize.Level->value();
+        norm["port1"] = normalize.port1Correction;
+        norm["port2"] = normalize.port2Correction;
+        sweep["normalization"] = norm;
+    }
+    j["sweep"] = sweep;
+
     j["traces"] = traceModel.toJSON();
     j["tiles"] = central->toJSON();
     j["markers"] = markerModel->toJSON();
@@ -305,6 +336,9 @@ nlohmann::json SpectrumAnalyzer::toJSON()
 
 void SpectrumAnalyzer::fromJSON(nlohmann::json j)
 {
+    if(j.is_null()) {
+        return;
+    }
     if(j.contains("traces")) {
         traceModel.fromJSON(j["traces"]);
     }
@@ -314,6 +348,63 @@ void SpectrumAnalyzer::fromJSON(nlohmann::json j)
     if(j.contains("markers")) {
         markerModel->fromJSON(j["markers"]);
     }
+    if(j.contains("sweep")) {
+        // restore sweep settings
+        auto sweep = j["sweep"];
+        if(sweep.contains("frequency")) {
+            auto freq = sweep["frequency"];
+            SetStartFreq(freq.value("start", settings.f_start));
+            SetStartFreq(freq.value("start", settings.f_start));
+        }
+        if(sweep.contains("acquisition")) {
+            auto acq = sweep["acquisition"];
+            SetRBW(acq.value("RBW", settings.RBW));
+            auto w = WindowFromString(QString::fromStdString(acq.value("window", "")));
+            if(w == Window::Last) {
+                // invalid, keep current value
+                w = (Window) settings.WindowType;
+            }
+            SetWindow(w);
+            auto d = DetectorFromString(QString::fromStdString(acq.value("detector", "")));
+            if(d == Detector::Last) {
+                // invalid, keep current value
+                d = (Detector) settings.Detector;
+            }
+            SetDetector(d);
+            SetSignalID(acq.value("signal ID", settings.SignalID ? true : false));
+        }
+        if(sweep.contains("trackingGenerator")) {
+            auto tracking = sweep["trackingGenerator"];
+            SetTGEnabled(tracking.value("enabled", settings.trackingGenerator ? true : false));
+            int port = tracking.value("port", 1);
+            // Function expects 0 for port1, 1 for port2
+            SetTGPort(port - 1);
+            SetTGLevel(tracking.value("power", settings.trackingPower));
+            SetTGOffset(tracking.value("offset", settings.trackingGeneratorOffset));
+        }
+        if(sweep.contains("normalization")) {
+            auto norm = sweep["normalization"];
+            // restore normalization data
+            normalize.port1Correction.clear();
+            for(double p1 : norm["port1"]) {
+                normalize.port1Correction.push_back(p1);
+            }
+            normalize.port2Correction.clear();
+            for(double p2 : norm["port2"]) {
+                normalize.port2Correction.push_back(p2);
+            }
+            normalize.f_start = norm.value("start", normalize.f_start);
+            normalize.f_stop = norm.value("stop", normalize.f_stop);
+            normalize.points = norm.value("points", normalize.points);
+            normalize.Level->setValue(norm.value("level", normalize.Level->value()));
+            if((normalize.port1Correction.size() == normalize.points) && (normalize.port1Correction.size() == normalize.points)) {
+                // got the correct number of points
+                EnableNormalization(true);
+            } else {
+                EnableNormalization(false);
+            }
+        }
+    }
 }
 
 using namespace std;
@@ -570,7 +661,7 @@ void SpectrumAnalyzer::SetTGEnabled(bool enabled)
 
 void SpectrumAnalyzer::SetTGPort(int port)
 {
-    if(port < 01 || port > 1) {
+    if(port < 0 || port > 1) {
         return;
     }
     if(port != settings.trackingGeneratorPort) {
@@ -971,3 +1062,48 @@ void SpectrumAnalyzer::updateGraphColors()
 {
     emit graphColorsChanged();
 }
+
+QString SpectrumAnalyzer::WindowToString(SpectrumAnalyzer::Window w)
+{
+    switch(w) {
+    case Window::None: return "None";
+    case Window::Kaiser: return "Kaiser";
+    case Window::Hann: return "Hann";
+    case Window::FlatTop: return "FlatTop";
+    default: return "Unknown";
+    }
+}
+
+SpectrumAnalyzer::Window SpectrumAnalyzer::WindowFromString(QString s)
+{
+    for(int i=0;i<(int)Window::Last;i++) {
+        if(WindowToString((Window) i) == s) {
+            return (Window) i;
+        }
+    }
+    // not found
+    return Window::Last;
+}
+
+QString SpectrumAnalyzer::DetectorToString(SpectrumAnalyzer::Detector d)
+{
+    switch(d) {
+    case Detector::PPeak: return "+Peak";
+    case Detector::NPeak: return "-Peak";
+    case Detector::Sample: return "Sample";
+    case Detector::Normal: return "Normal";
+    case Detector::Average: return "Average";
+    default: return "Unknown";
+    }
+}
+
+SpectrumAnalyzer::Detector SpectrumAnalyzer::DetectorFromString(QString s)
+{
+    for(int i=0;i<(int)Detector::Last;i++) {
+        if(DetectorToString((Detector) i) == s) {
+            return (Detector) i;
+        }
+    }
+    // not found
+    return Detector::Last;
+}
diff --git a/Software/PC_Application/SpectrumAnalyzer/spectrumanalyzer.h b/Software/PC_Application/SpectrumAnalyzer/spectrumanalyzer.h
index 48bfff1..e319e3d 100644
--- a/Software/PC_Application/SpectrumAnalyzer/spectrumanalyzer.h
+++ b/Software/PC_Application/SpectrumAnalyzer/spectrumanalyzer.h
@@ -32,7 +32,8 @@ private:
         None = 0,
         Kaiser = 1,
         Hann = 2,
-        FlatTop = 3
+        FlatTop = 3,
+        Last
     };
     enum class Detector {
         PPeak = 0,
@@ -40,8 +41,14 @@ private:
         Sample = 2,
         Normal = 3,
         Average = 4,
+        Last
     };
 
+    static QString WindowToString(Window w);
+    static Window WindowFromString(QString s);
+    static QString DetectorToString(Detector d);
+    static Detector DetectorFromString(QString s);
+
 private slots:
     void NewDatapoint(Protocol::SpectrumAnalyzerResult d);
     void StartImpedanceMatching();
diff --git a/Software/PC_Application/VNA/vna.cpp b/Software/PC_Application/VNA/vna.cpp
index 8466471..83039fa 100644
--- a/Software/PC_Application/VNA/vna.cpp
+++ b/Software/PC_Application/VNA/vna.cpp
@@ -560,6 +560,8 @@ Calibration::InterpolationType VNA::getCalInterpolation()
 {
     double f_min, f_max;
     switch(settings.sweepType) {
+    case SweepType::Last:
+        // should never get here, use frequency values just in case
     case SweepType::Frequency:
         f_min = settings.Freq.start;
         f_max = settings.Freq.stop;
@@ -678,6 +680,23 @@ void VNA::shutdown()
 nlohmann::json VNA::toJSON()
 {
     nlohmann::json j;
+    // save current sweep/acquisition settings
+    nlohmann::json sweep;
+    sweep["type"] = SweepTypeToString(settings.sweepType).toStdString();
+    nlohmann::json freq;
+    freq["start"] = settings.Freq.start;
+    freq["stop"] = settings.Freq.stop;
+    freq["power"] = settings.Freq.excitation_power;
+    sweep["frequency"] = freq;
+    nlohmann::json power;
+    power["start"] = settings.Power.start;
+    power["stop"] = settings.Power.stop;
+    power["frequency"] = settings.Power.frequency;
+    sweep["power"] = power;
+    sweep["points"] = settings.npoints;
+    sweep["IFBW"] = settings.bandwidth;
+    j["sweep"] = sweep;
+
     j["traces"] = traceModel.toJSON();
     j["tiles"] = central->toJSON();
     j["markers"] = markerModel->toJSON();
@@ -688,6 +707,9 @@ nlohmann::json VNA::toJSON()
 
 void VNA::fromJSON(nlohmann::json j)
 {
+    if(j.is_null()) {
+        return;
+    }
     if(j.contains("traces")) {
         traceModel.fromJSON(j["traces"]);
     }
@@ -703,6 +725,32 @@ void VNA::fromJSON(nlohmann::json j)
     } else {
         EnableDeembedding(false);
     }
+
+    // sweep configuration has to go last sog graphs can catch events from changed sweep
+    if(j.contains("sweep")) {
+        auto sweep = j["sweep"];
+        // restore sweep settings, keep current value as default in case of missing entry
+        SetPoints(sweep.value("points", settings.npoints));
+        SetIFBandwidth(sweep.value("IFBW", settings.bandwidth));
+        if(sweep.contains("frequency")) {
+            auto freq = sweep["frequency"];
+            SetStartFreq(freq.value("start", settings.Freq.start));
+            SetStopFreq(freq.value("stop", settings.Freq.stop));
+            SetSourceLevel(freq.value("power", settings.Freq.excitation_power));
+        }
+        if(sweep.contains("power")) {
+            auto power = sweep["power"];
+            SetStartPower(power.value("start", settings.Power.start));
+            SetStopPower(power.value("stop", settings.Power.stop));
+            SetPowerSweepFrequency(power.value("frequency", settings.Power.frequency));
+        }
+        auto type = SweepTypeFromString(QString::fromStdString(sweep["type"]));
+        if(type == SweepType::Last) {
+            // default to frequency sweep
+            type = SweepType::Frequency;
+        }
+        SetSweepType(type);
+    }
 }
 
 using namespace std;
@@ -735,6 +783,7 @@ void VNA::NewDatapoint(Protocol::Datapoint d)
 
     TraceMath::DataType type;
     switch(settings.sweepType) {
+    case SweepType::Last:
     case SweepType::Frequency:
         type = TraceMath::DataType::Frequency;
         break;
@@ -793,16 +842,21 @@ void VNA::SettingsChanged(std::function<void (Device::TransmissionResult)> cb)
         s.cdbm_excitation_stop = settings.Power.stop * 100;
     }
     if(window->getDevice() && Mode::getActiveMode() == this) {
-        window->getDevice()->Configure(s, [=](Device::TransmissionResult res){
-            // device received command, reset traces now
-            average.reset(s.points);
-            traceModel.clearLiveData();
-            UpdateAverageCount();
-            UpdateCalWidget();
-            if(cb) {
-                cb(res);
-            }
-        });
+        if(s.excitePort1 == 0 && s.excitePort2 == 0) {
+            // no signal at either port, just set the device to idel
+            window->getDevice()->SetIdle();
+        } else {
+            window->getDevice()->Configure(s, [=](Device::TransmissionResult res){
+                // device received command, reset traces now
+                average.reset(s.points);
+                traceModel.clearLiveData();
+                UpdateAverageCount();
+                UpdateCalWidget();
+                if(cb) {
+                    cb(res);
+                }
+            });
+        }
     }
     emit traceModel.SpanChanged(s.f_start, s.f_stop);
 }
@@ -1374,3 +1428,23 @@ void VNA::updateGraphColors()
 {
     emit graphColorsChanged();
 }
+
+QString VNA::SweepTypeToString(VNA::SweepType sw)
+{
+    switch(sw) {
+    case SweepType::Frequency: return "Frequency";
+    case SweepType::Power: return "Power";
+    default: return "Unknown";
+    }
+}
+
+VNA::SweepType VNA::SweepTypeFromString(QString s)
+{
+    for(int i=0;i<(int)SweepType::Last;i++) {
+        if(SweepTypeToString((SweepType) i) == s) {
+            return (SweepType) i;
+        }
+    }
+    // not found
+    return SweepType::Last;
+}
diff --git a/Software/PC_Application/VNA/vna.h b/Software/PC_Application/VNA/vna.h
index d3b5bf9..eccba3f 100644
--- a/Software/PC_Application/VNA/vna.h
+++ b/Software/PC_Application/VNA/vna.h
@@ -32,7 +32,12 @@ public:
     enum class SweepType {
         Frequency = 0,
         Power = 1,
+        Last,
     };
+
+    static QString SweepTypeToString(SweepType sw);
+    static SweepType SweepTypeFromString(QString s);
+
     using Settings = struct {
         SweepType sweepType;
         struct {
diff --git a/Software/PC_Application/appwindow.cpp b/Software/PC_Application/appwindow.cpp
index 1564697..918093f 100644
--- a/Software/PC_Application/appwindow.cpp
+++ b/Software/PC_Application/appwindow.cpp
@@ -911,6 +911,7 @@ void AppWindow::FrequencyCalibrationDialog()
 nlohmann::json AppWindow::SaveSetup()
 {
     nlohmann::json j;
+    j["activeMode"] = Mode::getActiveMode()->getName().toStdString();
     j["VNA"] = vna->toJSON();
     j["Generator"] = generator->toJSON();
     j["SpectrumAnalyzer"] = spectrumAnalyzer->toJSON();
@@ -924,6 +925,16 @@ void AppWindow::LoadSetup(nlohmann::json j)
     vna->fromJSON(j["VNA"]);
     generator->fromJSON(j["Generator"]);
     spectrumAnalyzer->fromJSON(j["SpectrumAnalyzer"]);
+
+    // activate the correct mode
+    QString modeName = QString::fromStdString(j.value("activeMode", ""));
+    std::vector<Mode*> modes = {vna, generator, spectrumAnalyzer};
+    for(auto m : modes) {
+        if(m->getName() == modeName) {
+            m->activate();
+            break;
+        }
+    }
 }
 
 Device *AppWindow::getDevice() const
diff --git a/Software/PC_Application/mode.cpp b/Software/PC_Application/mode.cpp
index 4a7cb6d..12e32f6 100644
--- a/Software/PC_Application/mode.cpp
+++ b/Software/PC_Application/mode.cpp
@@ -88,6 +88,14 @@ void Mode::activate()
     }
 
     activeMode = this;
+    // force activation of correct pushbutton in case the mode switch was done via script/setup load.
+    // This will trigger a second activation of this mode in the signal of the button, but since it is
+    // already the active mode, this function will just return -> no recursion
+    for(auto b : modeButtonGroup->buttons()) {
+        if(b->text() == name) {
+            b->click();
+        }
+    }
 
     if(window->getDevice()) {
         initializeDevice();