REMOTE I/O
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REMOTE I/O
All inputs are connected through the 9-pin “D” type connector mounted on the back panel
of the unit. This connector mates with the standard 9-pin “D” subminiature female
connector included with the unit. For best performance, a shielded cable should be used.
To avoid ground loops, the shield should not be grounded at both ends of the cable
The remote interface includes a SAFETY INTERLOCK. This interlock must be closed to
allow a test to start. The SAFETY INTERLOCK is wired between pins 4 and 5 of the
interface connector. For manual operation, the provided 9-pin “D” type connector has a
jumper between pins 4 and 5. This mating connector must be in place for manual
operation. For remote operation, the interlock can be appropriately connected to test
station guarding.
The interface allows remote operation of the TEST and RESET functions. A normally
open momentary switch across pins 3 and 5 allows remote operation of the TEST
function. A normally open momentary switch can also be wired across pins 2 and 5 to
allow remote operation of the RESET function. The TEST and RESET switches on the
front panel remain active during remote operation.
The remote interface also provides signals to remotely monitor the PASS, FAIL, and
PROCESSING conditions. These signals are provided by three normally open internal
relays that switch on to indicate the current condition of the tester. These are normally
open, free contacts and do not provide any voltage or current. The ratings of these
contacts are 1Amp/120VAC (1Amp/24VDC).
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