diff --git a/Python_script/VNA_dummy.py b/Python_script/VNA_dummy.py
index ab85c3c204b0b430090bab7fd5ef7f08f5a002d2..11a259fdbe97f2258c16ed0b237435a080c2a546 100644
--- a/Python_script/VNA_dummy.py
+++ b/Python_script/VNA_dummy.py
@@ -35,6 +35,7 @@ class VnaDummy:
         self.reference_temp = 25
         self.magnitude_slope = 0.2
         self.phase_slope = 0.1
+        self.communication_delay = 0.2
 
     def run_simulation(self):
         self.simulate_magnitude()
@@ -104,6 +105,8 @@ class VnaDummy:
         measurment_string = ' '
         for i in range(50):
             measurment_string += str(real_val) + ',' + str(imaginary_val) + ','
+        # doing the measurement and reading out some time
+        self.simulated_state.simulated_time += self.communication_delay
         # removed last comma by adding slicing([:-1])
         return measurment_string[:-1]
 
diff --git a/Python_script/climate_chamber_dummy.py b/Python_script/climate_chamber_dummy.py
index 457a30472b0b7e9fb122ea80f43f64b3f9a1facb..b6741d5cb6a52f1c59656a7cf3faecfb48a65e36 100644
--- a/Python_script/climate_chamber_dummy.py
+++ b/Python_script/climate_chamber_dummy.py
@@ -28,6 +28,7 @@ class ClimateChamberDummy:
         self.target_humidity = 35
         self.temperature_slope = 0.1  # 0.1 degrees/second
         self.humidity_slope = 0.5  # degrees/second
+        self.communication_delay = 0.3
 
     def run_simulation(self):
         self.simulate_temp()
@@ -72,11 +73,13 @@ class ClimateChamberDummy:
 
     def read_temperature(self):
 
+        self.simulated_state.simulated_time += self.communication_delay
         # data format: [current temp, set temp, upper limit, lower limit]
         return [self.simulated_state.simulated_temperature, self.target_temperature, 0., 100.]
 
     def read_humidity(self):
 
+        self.simulated_state.simulated_time += self.communication_delay
         # data format: [current temp, set temp, upper limit, lower limit]
         return [self.simulated_state.simulated_humidity, self.target_humidity, 0., 100.]
 
@@ -86,6 +89,7 @@ class ClimateChamberDummy:
         self.target_temperature = temperature
         print('ChamberDummy: target temperature now is ' + str(self.target_temperature))
         response = 'OK: TEMP, S30\r\n'
+        self.simulated_state.simulated_time += self.communication_delay
         return response
 
     def set_humidity(self, humidity):
@@ -95,6 +99,7 @@ class ClimateChamberDummy:
         self.target_humidity = humidity
         print('ChamberDummy: target humidity now is ' + str(self.target_humidity))
         response = 'OK: HUMI, S30\r\n'
+        self.simulated_state.simulated_time += self.communication_delay
         return response
 
     def close(self):
@@ -105,6 +110,7 @@ class ClimateChamberDummy:
     def set_mode(self, mode):
         self.simulated_mode = mode
         response = 'FIXME!!!'
+        self.simulated_state.simulated_time += self.communication_delay
         return response
 
     def get_const(self):
@@ -133,6 +139,7 @@ class ClimateChamberDummy:
         self.set_humidity(setPoint[1])
 
     def read_mode(self):
+        self.simulated_state.simulated_time += self.communication_delay
         return self.simulated_mode
 
     # deprecated. Use read_humidity etc. instead