diff --git a/src/nqrduck_spectrometer/base_spectrometer_model.py b/src/nqrduck_spectrometer/base_spectrometer_model.py
index 44a26d4..1325745 100644
--- a/src/nqrduck_spectrometer/base_spectrometer_model.py
+++ b/src/nqrduck_spectrometer/base_spectrometer_model.py
@@ -35,6 +35,7 @@ class BaseSpectrometerModel(ModuleModel):
 
         def get_setting(self):
             return float(self.value)
+        
 
     class PulseParameter:
         def __init__(self, name):
diff --git a/src/nqrduck_spectrometer/controller.py b/src/nqrduck_spectrometer/controller.py
index a3a5a4d..3834d87 100644
--- a/src/nqrduck_spectrometer/controller.py
+++ b/src/nqrduck_spectrometer/controller.py
@@ -40,7 +40,7 @@ class SpectrometerController(ModuleController):
 
         self._module.view.create_menu_entry()
 
-    def process_signals(self, key: str, value: str):
+    def process_signals(self, key: str, value: None):
         if key == "start_measurement":
             self.on_measurement_start()
 
diff --git a/src/nqrduck_spectrometer/measurement.py b/src/nqrduck_spectrometer/measurement.py
new file mode 100644
index 0000000..844a308
--- /dev/null
+++ b/src/nqrduck_spectrometer/measurement.py
@@ -0,0 +1,39 @@
+class Measurement():
+    """This class defines how measurement data should look. 
+    It includes pulse parameters necessary for further signal processing.
+    Every spectrometer should adhere to this data structure in order to be compatible with the rest of the nqrduck.
+    """
+
+    def __init__(self, tdx, tdy, target_frequency) -> None:
+        self.tdx = tdx
+        self.tdy = tdy
+        self.target_frequency = target_frequency
+
+    # Measurement data
+    @property
+    def tdx(self):
+        """Time axis for the x axis of the measurement data."""
+        return self._tdx
+    
+    @tdx.setter
+    def tdx(self, value):
+        self._tdx = value
+
+    @property
+    def tdy(self):
+        """Time axis for the y axis of the measurement data."""
+        return self._tdy
+    
+    @tdy.setter
+    def tdy(self, value):
+        self._tdy = value
+
+    # Pulse parameters
+    @property
+    def target_frequency(self):
+        """Target frequency of the measurement."""
+        return self._target_frequency
+    
+    @target_frequency.setter
+    def target_frequency(self, value):
+        self._target_frequency = value
diff --git a/src/nqrduck_spectrometer/pulse_sequence.py b/src/nqrduck_spectrometer/pulsesequence.py
similarity index 100%
rename from src/nqrduck_spectrometer/pulse_sequence.py
rename to src/nqrduck_spectrometer/pulsesequence.py