ViStatus pipx40_close (ViSession instrumentHandle);
    Terminates the software connection to the card and deallocates system resources associated with the card.
    
    NOTE: the card must be re-initialized to use it again.
    
| Input | ||
| Name | Type | Description | 
| instrumentHandle | ViSession | 
     Instrument handle obtained by the pipx40_init call used to open the card.  | 
      
| Name | Type | Description | 
| status | ViStatus | 
     
    A numeric code indicating the success or failure of the operation.
      | 
      
      Pickering Interfaces PXI VISA
      Alphabetical Function Index
      Hierarchical Function Index