|   频率(Hz)  |       1号光栅(Hz)  |       2号光栅(Hz)  |       3号光栅(Hz)  |    
|   50  |       50  |       50  |       50  |    
|   100  |       100  |       100  |       100  |    
|   150  |       150  |       150  |       150  |    
|   200  |       200  |       200  |       200  |    
|   250  |       250  |       250  |       250  |    
|   300  |       300  |       300  |       300  |    
|   350  |       350  |       350  |       350  |    
|   400  |       400  |       400  |       400  |    
|   450  |       0  |       0  |       0  |    
|   500  |       0  |       0  |       0  |    
|   550  |       0  |       0  |       0  |    
|   600  |       0  |       0  |       0  |