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                            # 9-5如何測試道閘的開關是否故障
## 拔掉地感或雷達后，直接短接道閘的GND（有些道閘也叫公共、地）和開或者關，看看道閘會不會做出對應的開閘關閘動作，不會的話就是壞了。
#### **拔掉地感/雷達后短接能抬桿落桿說明是地感/雷達沒有接好或故障**
直流道閘視頻演示如下↓：
```[youku]
XNTA5MDQzODkzMg
```
另一種控制板的視頻如下↓：
```[youku]
XNTE0Mzc4ODIwMA
```
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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