diff --git a/Python_script/prototype.py b/Python_script/prototype.py
index d7424ba9f54c45c230f43eb74455b30caed84551..2095a3a344b722e8ecf05ab77218336e47f9cf05 100755
--- a/Python_script/prototype.py
+++ b/Python_script/prototype.py
@@ -214,7 +214,7 @@ class Measurements:
                     if len(magnitudes_queue) >= number_of_soaking_reads:
                         magnitudes_queue.pop(0)
                     if self.temperature_stable and self.humidity_stable:
-                        magnitudes_queue.append(self.calculate_mean_magnitude(data.s21))
+                        magnitudes_queue.append(self.calculate_mean_magnitude_db(data.s21))
                     else:
                         magnitudes_queue.clear()
                     # check cable stability parameters
@@ -261,7 +261,7 @@ class Measurements:
                     data = self.read_data()
                     self.temperature_stable = self.calculate_temperature_stability(target_temp, float(data.temp))
                     self.humidity_stable = self.calculate_humidity_stability(target_hum, float(data.hum))
-                    mag = self.calculate_mean_magnitude(data.s21)
+                    mag = self.calculate_mean_magnitude_db(data.s21)
                     phase = self.calculate_mean_phase(data.s21)
                     self.magnitude_stable = (reference_magnitude-self.max_delta_mag <= mag) and\
                                             (mag <= reference_magnitude+self.max_delta_mag)
@@ -353,13 +353,13 @@ class Measurements:
             'READBACK_TEMP_MEAS_INSTR': float(data.temp_chamber_meas_instr),
             'READBACK_HUM_MEAS_INSTR': float(data.hum_chamber_meas_instr),
             'S11_PHASE': self.calculate_mean_phase(data.s11),
-            'S11_MAGNITUDE': 20*math.log10(self.calculate_mean_magnitude(data.s11)),
+            'S11_MAGNITUDE': self.calculate_mean_magnitude_db(data.s11),
             'S21_PHASE': self.calculate_mean_phase(data.s21),
-            'S21_MAGNITUDE': 20*math.log10(self.calculate_mean_magnitude(data.s21)),
+            'S21_MAGNITUDE': self.calculate_mean_magnitude_db(data.s21),
             'S12_PHASE': self.calculate_mean_phase(data.s12),
-            'S12_MAGNITUDE': 20*math.log10(self.calculate_mean_magnitude(data.s12)),
+            'S12_MAGNITUDE': self.calculate_mean_magnitude_db(data.s12),
             'S22_PHASE': self.calculate_mean_phase(data.s22),
-            'S22_MAGNITUDE': 20*math.log10(self.calculate_mean_magnitude(data.s22))
+            'S22_MAGNITUDE': self.calculate_mean_magnitude_db(data.s22)
         }
         self.data_collection.append(measurement)
         data_frame = pd.DataFrame(self.data_collection)
@@ -388,6 +388,9 @@ class Measurements:
         magnitudes = self.calculate_magnitudes(values_list)
         return numpy.mean(magnitudes)
 
+    def calculate_mean_magnitude_db(self, values_list):
+        return 20*math.log10(self.calculate_mean_magnitude(values_list))
+
     def calculate_phases(self, values_list):
         complex_numbers = self.calculate_complex_numbers(values_list)
         phases = [math.degrees(cmath.phase(val)) for val in complex_numbers]
diff --git a/Python_script/test_stand_parameter.json b/Python_script/test_stand_parameter.json
index 2a216221897d8660172938366fffcff132d55dd5..c32eb2ac6307b2491e898313b89ab9a000fc52a0 100644
--- a/Python_script/test_stand_parameter.json
+++ b/Python_script/test_stand_parameter.json
@@ -1 +1 @@
-{"delta_temp": 0.1, "delta_hum": 1, "delta_mag": 0.01 , "delta_phase": 1.5, "sleep_time": 10.0, "frequency": 1300000000, "vna_config_file": "CalSetup2.znxml","chamber_ip":"192.168.115.186", "instr_chamber_ip": "192.168.115.187", "vna_ip":"192.168.115.39", "data_folder":"measurements", "logger_ip": "192.168.115.94", "time_unit": "min", "trace_subplot5": "logger_sens", "logger_model": "710"}
+{"delta_temp": 0.1, "delta_hum": 1, "delta_mag": 0.13 , "delta_phase": 1.5, "sleep_time": 10.0, "frequency": 1300000000, "vna_config_file": "CalSetup2.znxml","chamber_ip":"192.168.115.186", "instr_chamber_ip": "192.168.115.187", "vna_ip":"192.168.115.39", "data_folder":"measurements", "logger_ip": "192.168.115.94", "time_unit": "min", "trace_subplot5": "logger_sens", "logger_model": "710"}