GW Instek GDM-8200A User Manual - Manual (Page 59)

SYSTEM/DISPLAY CONFIGURATION
59
Trigger Setting
Manual/Automatic triggering
Automatic
triggering
(default) The GDM-8200A series triggers according to the refresh
rate. See the previous page for refresh rate setting details.
Manual
triggering Press the TRIG key to trigger
measurement manually.
Use external trigger
Background The GDM-8200A series uses the internal trigger by
default, for example to count the frequency and the
period. Using an external trigger allows customized
triggering condition.
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
1 2 3 4 5
6 7 8 9 FAIL Out
HIGH Limit FAIL Out
LOW Limit FAIL Out
EOM Out
VCC Out
NC
Digital (Chassis) Ground
External Trigger In
PASS Out