GW Instek PSU-Series User Manual - Manual (Page 139)

ANALOG CONTROL
139
External Trigger In/Out
Background Pin 4 is used for the external trigger input and
pin 17 is used as the trigger output. Pin 5 is the
common for both pins.
Name and Pin
Description
STATUS
COM2
5 Common (photo coupler
emitter) for trigger pins 4, 17.
TRIG IN 4 External trigger input
TRIG OUT 17 The TRIG OUT signal is held
high by an internal 330Ω
resistor. The trigger output is
pulsed low for each trigger.
4 (TRIG IN)
17 (TRIG OUT)
5 (Status COM2)
+5V
330R