The tester cannot start to run a test under the following
conditions:
A protection setting has been tripped; when a protection
setting has been tripped the corresponding error message is
displayed on the screen. See page 198 for a comprehensive
list of the all the setting errors.
The INTERLOCK function is ON and the Interlock key is not
inserted in the signal I/O port (page 117).
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).
When a test is running the voltage output cannot be changed,
unless the test is under the special manual mode. See page
83 for details.