GW Instek GDM-8261A User manual - Manual (Page 119)

SCANNER (OPTIONAL)
119
Use External Trigger
Background The GDM-8261A uses the internal trigger by default.
Using an external trigger allows customized triggering.
Signal
connection Connect the external trigger signal to the Digital I/O
port located on the rear panel.
DB-9, female
Digital I/O pin
assignment
6
FAIL Out
7 8 9
1 2 3 4 5
High Limit FAIL Out
VCC Out
NC
PASS Out
External Trigger In
EOM Out
LOW Limit FAIL Out
Digital (chassis) Ground
Pin4 External Trigger Input pin
Activate external
trigger Press the Shift key followed by the
Trig key. The EXT indicator appears
on the display.
/ EXIT SHIFT
TRIG
INT/EXT
Start trigger Press the Trig key to start triggering
manually. The reading indicator ( )
turns On.
TRIG
Reading indicator The reading indicator stays On before triggering.
After triggering, the indicator flashes according to the
external signal trigger timing.
Exit external
trigger Press the Shift key followed by the
Trig key. The EXT indicator
disappears and the trigger goes back
to the internal mode.
/ EXIT SHIFT
TRIG
INT/EXT