Simulation fix: use sending device dtype for modulation

Author: jopohl

src/urh/signalprocessing/Modulator.py

@@ -202,7 +202,7 @@ def data_scene(self) -> QGraphicsScene:
 
         return scene
 
-    def modulate(self, data=None, pause=0, start=0) -> IQArray:
+    def modulate(self, data=None, pause=0, start=0, dtype=None) -> IQArray:
         assert pause >= 0
         if data is None:
             data = self.data
@@ -217,7 +217,7 @@ def modulate(self, data=None, pause=0, start=0) -> IQArray:
         if len(data) == 0:
             return IQArray(None, np.float32, 0)
 
-        dtype = self.get_dtype()
+        dtype = dtype or self.get_dtype()
         a = self.carrier_amplitude * IQArray.min_max_for_dtype(dtype)[1]
 
         parameters = self.parameters

src/urh/simulator/Simulator.py

@@ -451,7 +451,7 @@ def resend_last_message(self):
 
     def send_message(self, message, repeat, sender, modulator_index):
         modulator = self.modulators[modulator_index]
-        modulated = modulator.modulate(message.encoded_bits, pause=message.pause)
+        modulated = modulator.modulate(message.encoded_bits, pause=message.pause, dtype=self.sender.device.data_type)
 
         curr_repeat = 0