spdt_test.betula

_ Test cases for the Single-Pole Double Throw Relay
                                                   
                                                   
             spdt                                  
           8   88      a*                          
           L@-@L-Z--J---@                          
             8| 8|0 a                              
        @---@L|-L@                                 
        |     |  |1 7                              
        | 7*@-@--S--L---@                          
        |       8 7     |  0 0                     
        |              1=--LNL _spdt test failed_  
        |               |                          
        |             7*@                          
       8*                                          
                                                   
         @-----------@                             
         |           |                             
         |           |0                            
         |     8*----S----L                        
         |          80                             
         |                                         
        0*