diff --git a/software/gui.py b/software/gui.py
index 5d90203..9f473d3 100644
--- a/software/gui.py
+++ b/software/gui.py
@@ -31,7 +31,7 @@ class ReflectometerConfig:
     pulse_height: int
     pulse_num: int
 
-    dac_adc_ratio: float = 0.52
+    adc_dac_ratio: float = 0.52
     socket_timeout_sec: float = 2.0
 
 
@@ -108,7 +108,7 @@ class ReflectometerWorker(QObject):
         output += 0b10001000.to_bytes(1, "little")
 
         pulse_period_adc = (
-            int(self.config.pulse_period * self.config.dac_adc_ratio)
+            int(self.config.pulse_period * self.config.adc_dac_ratio)
             // self.config.window_size
         ) * self.config.window_size
 
@@ -126,7 +126,7 @@ class ReflectometerWorker(QObject):
     def _recv_data(self) -> list[int]:
         packet_count = math.ceil(
             (
-                self.config.dac_adc_ratio
+                self.config.adc_dac_ratio
                 * self.config.pulse_period
                 / self.config.window_size
                 * self.config.data_width
@@ -135,7 +135,7 @@ class ReflectometerWorker(QObject):
         )
 
         expected_length = math.ceil(
-            self.config.dac_adc_ratio
+            self.config.adc_dac_ratio
             * self.config.pulse_period
             / self.config.window_size
         )
@@ -227,7 +227,7 @@ class MainWindow(QMainWindow):
         self.nmax = 4096
         self.packet_size = 1024
         self.window_size = 65
-        self.dac_adc_ration = 0.52
+        self.adc_dac_ration = 0.52
         self.accum_width = 32
 
         # setup
@@ -239,7 +239,7 @@ class MainWindow(QMainWindow):
 
         self.data = []
 
-        self.dac_adc_ratio = 0.52
+        self.adc_dac_ratio = 0.52
 
         self.measurement_thread = None
         self.measurement_worker = None
@@ -455,8 +455,8 @@ class MainWindow(QMainWindow):
         )
 
         self._bind_spinbox_setting(
-            name="dac_adc_ratio",
-            box=self.box_dac_adc_ratio,
+            name="adc_dac_ratio",
+            box=self.box_adc_dac_ratio,
         )
 
         self._bind_spinbox_setting(
@@ -578,6 +578,7 @@ class MainWindow(QMainWindow):
         self.reference_curve = self.graph_widget.plot(
             [],
             name="Reference",
+            color="b"
         )
 
         self.graph_layout.addWidget(self.graph_widget)
@@ -654,7 +655,7 @@ class MainWindow(QMainWindow):
             pulse_height=self.pulse_height,
             pulse_num=self.pulse_num,
 
-            dac_adc_ratio=self.dac_adc_ratio,
+            adc_dac_ratio=self.adc_dac_ratio,
         )
 
     def on_data_received(self, data: list[int]):
@@ -670,6 +671,11 @@ class MainWindow(QMainWindow):
         else:
             self.set_measurement_status("Готово, но данные пустые")
 
+        # normalize
+        for i in range(len(data)):
+            self.data[i] -= 2 ** (self.adc_dw - 1)
+            self.data[i] /= (self.window_size * self.pulse_num)
+
     def on_measurement_error(self, message: str):
         self.set_measurement_status(f"Ошибка: {message}")
 
@@ -721,20 +727,11 @@ class MainWindow(QMainWindow):
         self.reference_curve.setData(x, reference_data)
 
     def build_reference_data(self, length: int) -> list[int]:
-        """
-        Тут потом опишешь свою логику построения эталонного сигнала.
-
-        Главное: вернуть массив такой же или нужной тебе длины.
-        Например:
-            reference = [0] * length
-            reference[10:100] = ...
-            return reference
-        """
-
-        # TODO: сюда вставить свою логику эталонного графика
-
         reference = [0] * length
 
+        reference[0:(self.pulse_width // self.window_size + 1)
+                  ] = [self.pulse_height, ] * (self.pulse_width // self.window_size)
+
         return reference
 
 
diff --git a/software/reflectometer.ui b/software/reflectometer.ui
index 654da3c..120c512 100644
--- a/software/reflectometer.ui
+++ b/software/reflectometer.ui
@@ -23,7 +23,7 @@
       <item>
        <widget class="QTabWidget" name="tabWidget">
         <property name="currentIndex">
-         <number>1</number>
+         <number>0</number>
         </property>
         <widget class="QWidget" name="tab">
          <attribute name="title">
@@ -59,6 +59,9 @@
               </item>
               <item>
                <widget class="QSpinBox" name="box_dac_dw">
+                <property name="suffix">
+                 <string> bits</string>
+                </property>
                 <property name="prefix">
                  <string>DAC data width: </string>
                 </property>
@@ -75,6 +78,9 @@
               </item>
               <item>
                <widget class="QSpinBox" name="box_adc_dw">
+                <property name="suffix">
+                 <string> bits</string>
+                </property>
                 <property name="prefix">
                  <string>ADC data width: </string>
                 </property>
@@ -91,6 +97,9 @@
               </item>
               <item>
                <widget class="QSpinBox" name="box_accum_width">
+                <property name="suffix">
+                 <string> bits</string>
+                </property>
                 <property name="prefix">
                  <string>Accum width: </string>
                 </property>
@@ -100,15 +109,18 @@
                 <property name="maximum">
                  <number>64</number>
                 </property>
+                <property name="singleStep">
+                 <number>8</number>
+                </property>
                 <property name="value">
                  <number>32</number>
                 </property>
                </widget>
               </item>
               <item>
-               <widget class="QDoubleSpinBox" name="box_dac_adc_ratio">
+               <widget class="QDoubleSpinBox" name="box_adc_dac_ratio">
                 <property name="prefix">
-                 <string>DAC:ADC clk ratio: </string>
+                 <string>ADC:DAC clk ratio: </string>
                 </property>
                 <property name="minimum">
                  <double>0.200000000000000</double>
@@ -116,6 +128,9 @@
                 <property name="maximum">
                  <double>3.000000000000000</double>
                 </property>
+                <property name="singleStep">
+                 <double>0.010000000000000</double>
+                </property>
                 <property name="value">
                  <double>0.520000000000000</double>
                 </property>
@@ -155,6 +170,9 @@
               </item>
               <item>
                <widget class="QSpinBox" name="box_packet_size">
+                <property name="suffix">
+                 <string> bytes</string>
+                </property>
                 <property name="prefix">
                  <string>Packet size: </string>
                 </property>