GW Instek GDM-8200A User Manual - Manual (Page 91)

DIGITAL I/O
91
Digital I/O Terminal Configuration
Background The digital I/O terminal outputs the result of Compare
measurement to control external devices. By providing
separate VCC for the terminal, the outputs can also be
used as power source for TTL and CMOS logics.
Pin assignment Connector type: DB-9 female
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
Pin1 VCC output, 5V. Serves as the power source for
the external device/logic.
Pin2 NC (No Connection).
Pin3 COM (ground).
Pin4 External Trigger Input. Accepts external trigger
signal. For using external signals, see page86
(Scanner) or page59 (Configuration).
Pin5 PASS signal Output. Activates when the
compare result is PASS.
Pin6 FAIL signal Output. Activates when the
compare result is FAIL.
Pin7 HIGH Limit FAIL signal Output. Activates
when the compare result is FAIL due to
violating the HIGH Limit.
Pin8 LOW Limit FAIL signal Output. Activates when
the compare result is FAIL due to violating the
LOW Limit.
Pin9 EOM (End Of Measurement) signal Output.
Activates when compare measurement is over.