diff --git a/software/gui.py b/software/gui.py
index 9f473d3..17658c9 100644
--- a/software/gui.py
+++ b/software/gui.py
@@ -198,7 +198,7 @@ class ReflectometerWorker(QObject):
         if self.config.pulse_num >= 2**16 - 1:
             raise ValueError("pulse_num слишком большой")
 
-        if self.config.pulse_height >= 2**self.config.dac_bits - 1:
+        if self.config.pulse_height > 2**self.config.dac_bits - 1:
             raise ValueError("pulse_height слишком большой")
 
 
@@ -500,28 +500,14 @@ class MainWindow(QMainWindow):
 
     def update_pulse_limits(self):
         # re-calc limits
-        """
-        Сюда потом можно дописать формулы для пересчета максимумов.
 
-        Например:
-        max_pulse_height = 2 ** self.dac_dw - 1
-        self.set_max_pulse_height(max_pulse_height)
-
-        max_pulse_period = self.nmax * self.window_size
-        self.set_max_pulse_period(max_pulse_period)
-
-        max_pulse_width = ...
-        self.set_max_pulse_width(max_pulse_width)
-
-        max_pulse_num = ...
-        self.set_max_pulse_num(max_pulse_num)
-        """
         # nmax -> pulse_period limit
         self.set_max_pulse_period(self.nmax * self.window_size)
         self.set_max_pulse_width(self.nmax * self.window_size)
         # accum_width + adc_width -> max pulse num
 
-        self.set_max_pulse_num(2 ** (self.accum_width - self.adc_dw) - 1)
+        self.set_max_pulse_num(
+            2 ** (self.accum_width - self.adc_dw - math.ceil(math.log2(self.window_size))) - 1)
         # dac_width -> max pulse height
         self.set_max_pulse_height(2 ** self.dac_dw - 1)
 
@@ -578,13 +564,13 @@ class MainWindow(QMainWindow):
         self.reference_curve = self.graph_widget.plot(
             [],
             name="Reference",
-            color="b"
         )
 
         self.graph_layout.addWidget(self.graph_widget)
-        self.graph_curve = self.graph_widget.plot([], pen=pg.mkPen(width=2))
+        self.graph_curve = self.graph_widget.plot(
+            [], pen=pg.mkPen(width=2, color="b"))
         self.reference_curve = self.graph_widget.plot(
-            [], pen=pg.mkPen(style=Qt.PenStyle.DashLine))
+            [], pen=pg.mkPen(style=Qt.PenStyle.DashLine, color="g"))
 
         self.checkbox_draw_reference.stateChanged.connect(
             self.update_reference_graph)
@@ -603,7 +589,7 @@ class MainWindow(QMainWindow):
     def run_measurement(self):
         if self.measurement_thread is not None:
             if self.measurement_thread.isRunning():
-                self.set_measurement_status("Измерение уже выполняется")
+                self.set_measurement_status("Измерение выполняется")
                 return
 
         config = self.build_reflectometer_config()
@@ -660,21 +646,20 @@ class MainWindow(QMainWindow):
 
     def on_data_received(self, data: list[int]):
         self.data = data
+        # normalize
+        for i in range(len(data)):
+            self.data[i] /= (self.window_size * self.pulse_num)
+            self.data[i] -= 2 ** (self.adc_dw - 1) + 1
 
         self.draw_main_graph()
         self.update_reference_graph()
 
         if data:
             self.set_measurement_status(
-                f"Готово. Samples: {len(data)}, min: {min(data)}, max: {max(data)}"
+                f"Готово. smp: {len(data)}, min: {min(data)}, max: {max(data)}"
             )
         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)
+            self.set_measurement_status("Данные пустые")
 
     def on_measurement_error(self, message: str):
         self.set_measurement_status(f"Ошибка: {message}")
@@ -688,12 +673,7 @@ class MainWindow(QMainWindow):
             self.measurement_worker.stop()
 
     def set_measurement_status(self, text: str):
-        print(text)
-
-        # Если отдельного label под статус измерения пока нет,
-        # можно временно использовать label_ping_status.
-        if hasattr(self, "label_ping_status"):
-            self.label_ping_status.setText(text)
+        self.label_status.setText(text)
 
     def draw_main_graph(self):
         if not self.data:
@@ -729,8 +709,11 @@ class MainWindow(QMainWindow):
     def build_reference_data(self, length: int) -> list[int]:
         reference = [0] * length
 
-        reference[0:(self.pulse_width // self.window_size + 1)
-                  ] = [self.pulse_height, ] * (self.pulse_width // self.window_size)
+        actual_pulse_width = round(
+            (self.pulse_width * self.adc_dac_ratio) / self.window_size)
+
+        reference[0:actual_pulse_width] = [
+            self.pulse_height - 2 ** (self.adc_dw - 1) + 1, ] * (actual_pulse_width - 1)
 
         return reference
 
diff --git a/software/reflectometer.ui b/software/reflectometer.ui
index 120c512..96ac6f0 100644
--- a/software/reflectometer.ui
+++ b/software/reflectometer.ui
@@ -23,7 +23,7 @@
       <item>
        <widget class="QTabWidget" name="tabWidget">
         <property name="currentIndex">
-         <number>0</number>
+         <number>1</number>
         </property>
         <widget class="QWidget" name="tab">
          <attribute name="title">
@@ -413,6 +413,9 @@
             </item>
             <item>
              <widget class="QSlider" name="slider_pulse_num">
+              <property name="minimum">
+               <number>1</number>
+              </property>
               <property name="orientation">
                <enum>Qt::Orientation::Horizontal</enum>
               </property>
@@ -427,6 +430,29 @@
             </property>
            </widget>
           </item>
+          <item>
+           <layout class="QHBoxLayout" name="horizontalLayout_6" stretch="1,3">
+            <item>
+             <widget class="QLabel" name="label_13">
+              <property name="font">
+               <font>
+                <bold>true</bold>
+               </font>
+              </property>
+              <property name="text">
+               <string>Статус:</string>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <widget class="QLabel" name="label_status">
+              <property name="text">
+               <string>-</string>
+              </property>
+             </widget>
+            </item>
+           </layout>
+          </item>
           <item>
            <widget class="QCheckBox" name="checkbox_draw_reference">
             <property name="text">