Vanguard PCI-600 - Manual (Page 10)

PCI-600 USER’S MANUAL REV 2
7
2.1.3. Timer Stop Input and Control
After a test is started, the PCI-600 timer can be stopped and the
current source turned off using one of three options listed
below. Press the
[→] key next to the option LED indicators to
select the mode.
DRY CONTACT In "DRY CONTACT" mode, the PCI-600 will
output a DC voltage to the "TIMER STOP"
terminals to sense the state of dry contacts. A
change in this dry contact state will stop the
timer and turn off the current source. This
mode requires an external input to the PCI-
600. External timer stop input signals are
sensed through the "TIMER STOP" connectors.
WET CONTACT In "WET CONTACT" mode, the PCI-600 will
sense an AC or DC voltage applied to the
"TIMER STOP" connectors. The "OFF" state is
any voltage from 0 to 10 V ac/dc. The "ON"
state is any voltage from 24 to 300 V ac/dc. A
change in the "Voltage" state will stop the
timer and turn off the current source. This
mode requires an external input to the PCI-
600. External timer stop input signals are
sensed through the "TIMER STOP" connectors.
CURRENT In "CURRENT" mode, an interruption of the
PCI-600 current source output (CB contact
opened) will stop the timer and turn off the
current source.