The tester cannot start to run an AUTO test 
under the following conditions: 
  Any protection modes have been tripped. 
  The INTERLOCK function is ON and the 
Interlock key is not inserted in the signal I/O 
port (page 185).   
  The STOP signal has been received remotely. 
If Double Action is ON, ensure the START 
button is pressed immediately after the STOP 
button (<0.5s).