GW Instek GOM-802 User Manual - Manual (Page 13)

GOM-802 DC MILLI-OHM METER
USER MANUAL
⎯ ⎯
20
3) Under the TRIG mode, change the range or power on the instrument, the
“————” message will be displayed on the measurement displayed area,
now the instrument is in the TRIG standby status. The decimal is
represented the range. When proceeding the TRIG measurement, the
measurement-displayed area will display the present measuring value.
(4) Handler interface
The handler interface provides a TTL input (START), 6 TTL outputs,
including LOW, HIGH, FAIL, PASS, EOT and READY ( This function is
valid only under the resistance measurement mode and the compare mode is
enabled) .
9-PIN D-SHELL (FEMALE)
START: Start trigger and proceed one time measurement, negative edge
trigger.
READY: Output “1” to GND, means the measurement is completed and
can proceed next trigger.
EOT: Output “1” to GND, means the AD convert procedure is
completed, can change the DUT.
LOW: Output “1” to GND, means the judgment of the compare
function is low.
HIGH: Output “1” to GND, means the judgment of the compare
function is high.
EOT
READY
HIGH
LOW
GND
+5V
PASS
FAIL
START
GOM-802 DC MILLI-OHM METER
USER MANUAL
⎯ ⎯
21
FAIL: Output “1” to GND, means the judgment of the compare
function is High or low.
PASS: Output “1” to GND, means the judgment of the compare
function is GO.
The output current from all output collector and +5V
terminal can not exceed 60mA.
(5) Interface setting
Please refer to the programmable manual.
(6) SCAN interface
1) The scan interface provides 6 TTL outputs, including READY,
PASS, LOW, HIGH, FAIL, CLOCK, and STRB.
9-PIN D-SHELL (FEMALE)
RELAY: Control the relay signal, and series signal output.
PASS: Indicate PASS signal, and series signal output.
LOW: Indicate LOW signal, and series signal output.
HIGH: Indicate HIGH signal, and series signal output.
CLOCK: When every group of output signal (including READY,
PASS, LOW, HIGH) is ready, a CLOCK signal will be sent
out. There are 100 groups of output signals totally.
STRB: After all 100 groups of output signals have been ready, a
STRB signal will be sent out.
PASS
RELAY
CLOCK
STRB
GND
+5V
LOW
HIGH