diff --git a/docs/G306.txt b/docs/G306.txt
index 210ca9e..076c78a 100644
--- a/docs/G306.txt
+++ b/docs/G306.txt
@@ -1277,15 +1277,15 @@
 		"field": "Common",
 		"pos": 0,
 		"unit": "None",
-		"title": "PWM占空比",
-		"desc": "",
+		"title": "扫描传感器信号强度",
+		"desc": "值越小越容易检测薄纸",
 		"type": "int",
 		"cur": 5,
 		"default":5,
 		"size": 4,
 		"range": {
-			"min": 5,
-			"max": 80,
+			"min": 1,
+			"max": 50,
 			"step": 1
 		}
 	},