diff --git a/app/plots/plot_accuracy.py b/app/plots/plot_accuracy.py
index 9b75e18..65c4ed0 100644
--- a/app/plots/plot_accuracy.py
+++ b/app/plots/plot_accuracy.py
@@ -335,10 +335,14 @@ def plot_accuracy(self: "PQAutomationApp", accuracy_data, test_type):
 
     fig.patch.set_facecolor(palette["bg"])
 
-    # 根据当前画布像素尺寸动态缩放字体，避免窗口缩小时文字挤压重叠。
+    # 先确保色准页签已激活，再读取真实画布尺寸进行动态缩放。
     font_scale = 1.0
     try:
+        self.chart_notebook.select(self.accuracy_chart_frame)
+        self.chart_notebook.update_idletasks()
         canvas_widget = self.accuracy_canvas.get_tk_widget()
+        canvas_widget.update_idletasks()
+        canvas_widget.update()
         cw = max(1, int(canvas_widget.winfo_width()))
         ch = max(1, int(canvas_widget.winfo_height()))
         font_scale = min(cw / 1000.0, ch / 600.0)
@@ -423,11 +427,13 @@ def plot_accuracy(self: "PQAutomationApp", accuracy_data, test_type):
     except Exception:
         pass
 
-    # Select the tab first so the canvas is visible and winfo_width/height
-    # return real pixel dimensions before the figure is rendered.
+    # 重新刷新布局并绘制，确保画布尺寸与 notebook tab 对齐。
     self.chart_notebook.select(self.accuracy_chart_frame)
-    self.accuracy_canvas.get_tk_widget().update_idletasks()
+    canvas_widget = self.accuracy_canvas.get_tk_widget()
+    canvas_widget.update_idletasks()
+    canvas_widget.update()
     self.accuracy_canvas.draw()
+    canvas_widget.update_idletasks()
 
 
 class PlotAccuracyMixin:
diff --git a/app/runner/test_runner.py b/app/runner/test_runner.py
index c5b57c1..c66ed43 100644
--- a/app/runner/test_runner.py
+++ b/app/runner/test_runner.py
@@ -341,9 +341,9 @@ def send_fix_pattern(self: "PQAutomationApp", mode):
         self.pattern_service.send_session_pattern(session, 0)
 
         if format_changed:
-            signal_settle = max(1.0, float(getattr(self, "signal_settle_time", 5.0)))
+            signal_settle = max(1.0, float(getattr(self, "signal_settle_time", 4.0)))
             self.log_gui.log(
-                f"信号格式已变化，等待电视重新锁定: {signal_settle:.1f}s（可通过 signal_settle_time 调整）",
+                f"信号格式已变化，等待电视重新锁定: {signal_settle:.1f}s",
                 level="info",
             )
         else:
diff --git a/app/views/pq_debug_panel.py b/app/views/pq_debug_panel.py
index 5314391..f46a911 100644
--- a/app/views/pq_debug_panel.py
+++ b/app/views/pq_debug_panel.py
@@ -612,13 +612,10 @@ class PQDebugPanel:
 
         if test_type == "screen_module":
             self.screen_frame.pack(fill=tk.BOTH, expand=True)
-            self.app.log_gui.log("显示屏模组调试面板", level="success")
         elif test_type == "sdr_movie":
             self.sdr_frame.pack(fill=tk.BOTH, expand=True)
-            self.app.log_gui.log("显示 SDR 调试面板", level="success")
         elif test_type == "hdr_movie":
             self.hdr_frame.pack(fill=tk.BOTH, expand=True)
-            self.app.log_gui.log("显示 HDR 调试面板", level="success")
 
     # ==================== 启用/禁用控制 ====================
 
@@ -643,39 +640,31 @@ class PQDebugPanel:
             if test_item == "gamma":
                 self.screen_gray_combo.config(state="readonly")
                 self.screen_test_btn.config(state=tk.NORMAL)
-                self.app.log_gui.log("屏模组 Gamma 单步调试已启用", level="success")
             elif test_item == "rgb":
                 self.screen_rgb_combo.config(state="readonly")
                 self.screen_rgb_test_btn.config(state=tk.NORMAL)
-                self.app.log_gui.log("屏模组 RGB 单步调试已启用", level="success")
 
         elif test_type == "sdr_movie":
             if test_item == "gamma":
                 self.sdr_gray_combo.config(state="readonly")
                 self.sdr_gamma_test_btn.config(state=tk.NORMAL)
-                self.app.log_gui.log("SDR Gamma 单步调试已启用", level="success")
             elif test_item == "accuracy":
                 self.sdr_color_combo.config(state="readonly")
                 self.sdr_accuracy_test_btn.config(state=tk.NORMAL)
-                self.app.log_gui.log("SDR 色准单步调试已启用", level="success")
             elif test_item == "rgb":
                 self.sdr_rgb_combo.config(state="readonly")
                 self.sdr_rgb_test_btn.config(state=tk.NORMAL)
-                self.app.log_gui.log("SDR RGB 单步调试已启用", level="success")
 
         elif test_type == "hdr_movie":
             if test_item == "eotf":
                 self.hdr_gray_combo.config(state="readonly")
                 self.hdr_eotf_test_btn.config(state=tk.NORMAL)
-                self.app.log_gui.log("HDR EOTF 单步调试已启用", level="success")
             elif test_item == "accuracy":
                 self.hdr_color_combo.config(state="readonly")
                 self.hdr_accuracy_test_btn.config(state=tk.NORMAL)
-                self.app.log_gui.log("HDR 色准单步调试已启用", level="success")
             elif test_item == "rgb":
                 self.hdr_rgb_combo.config(state="readonly")
                 self.hdr_rgb_test_btn.config(state=tk.NORMAL)
-                self.app.log_gui.log("HDR RGB 单步调试已启用", level="success")
 
     def disable_all_debug(self):
         """禁用所有单步调试（新测试开始时调用）"""
diff --git a/settings/pq_config.json b/settings/pq_config.json
index f30f69f..73fceaf 100644
--- a/settings/pq_config.json
+++ b/settings/pq_config.json
@@ -1,5 +1,5 @@
 {
-    "current_test_type": "screen_module",
+    "current_test_type": "sdr_movie",
     "test_types": {
         "screen_module": {
             "name": "屏模组性能测试",