User Manual

Afterwards, exit the menu to verify that the ENA indicator is no longer

displayed before going back to the menu to reset EXTERN ENABLE to

ACTIVE.

Shut-Off

Pin 15 can be used to shut off the power supply’s output, controlled by an

input trigger signal. The output shuts off with the falling edge or rising

edge of the trigger. This is selectable from the menu by pressing MENU 6-

SPECIAL TEST FUNC  2. EXTERNAL CONTROL. Choose between

OFF/LOW (for falling edge trigger) or ON/LOW (for rising edge trigger).

Falling-edge trigger

EXTERN MONITOR= 10V

EXTERN SHUT-OFF= OFF / LOW

EXTERN ENABLE= ACTIVE

Rising-edge trigger

EXTERN MONITOR= 10V

EXTERN SHUT-OFF= ON / LOW

EXTERN ENABLE= ACTIVE

When Shut Off occurs, the output will be turned off immediately and SO

will appear on the LCD display (as shown in the figure below). To enable

the output again, first set the pin’s input voltage back to the original voltage

setting (for falling-edge trigger, set back to high level (5V), and low level

(0V) for rising-edge trigger). Then, press ESC (to deactivate the SO status)

before pressing the On/Off button again to enable the output.