diff --git a/tb/shinTest/gen_pkt.py b/tb/shinTest/gen_pkt.py
index b9b39e8..09b856c 100755
--- a/tb/shinTest/gen_pkt.py
+++ b/tb/shinTest/gen_pkt.py
@@ -140,15 +140,18 @@ if __name__ == '__main__':
 
     #subPkt参数：索引、索引类型、地址、命令、长度、数据
     data = bytearray(b"\0" * 0x28)
-    data[0] = 0xff
-    data[16] = 0x90
-    data[17] = 0x88
-    data[24] = 0xff
-    data[25] = 0x0f
-    data[28] = 0x0a
+    data[0] = 0xff  #地址0x120
+    
+    data[16] = 0x90 #地址0x130, sync同步点
+    data[17] = 0x88 #地址0x131
+    
+    data[24] = 0xff #地址0x138, sync周期 4B
+    data[25] = 0x0f #地址0x139
+    
+    data[28] = 0x0a #sync1偏移
     data[29] = 0x0
 
-    data[36] = 0x0
+    data[36] = 0x0  #sync3偏移
     data[37] = 0x01
     
     genPkt.addSubPkt(0x2, 0, 0x120, 0x1, 0x28, data)