Associated Research 3030D, Operation And Service Manual, Page: 31 / 43

OPERATION
27
D. CONNECTION OF REMOTE I/O:
Two 9 pin D type connectors are mounted on the rear panel that provide REMOTE-
INPUT-OUTPUT control and information. These connectors mate with standard 9 pin D
subminiature connector provided by the user. The output mates to a male (plug)
connector while the input mates to a female (receptacle) connector. 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. Suggested AMP part numbers for interconnecting to the Remote
I/O are shown below.
205204-4
PLUG SHELL WITH GROUND INDENTS
205203-3 RECEPTACLE SHELL
745254-7 CRIMP SNAP-IN PIN CONTACT (for plug)
745253-7 CRIMP SNAP-IN SOCKET CONTACT (for receptacle)
745171-1 SHIELDED CABLE CLAMP (for either plug or receptacle)
747784-3 JACKSCREW SET (2)
REMOTE INTERFACE REAR PANEL:
SIGNAL OUTPUTS ON REMOTE I/O
The rear panel connector provides three output signals to remotely monitor PASS, FAIL,
and PROCESSING conditions, and it also provides a RESET OUT pulse signal and a
START OUT pulse signal. The monitoring signals are provided by three normally open
internal relays that switch on to indicate the current condition of the tester. The RESET
OUT signal and the START OUT pulse signal are also provided by a normally open
internal relay. The RESET OUT gives a signal whenever the reset function is activated.
This can be used to abort a Dielectric Withstand test while the units are interfaced as a
test system. The START OUT gives a momentary output pulse at the end of the Ground
Bond test that can be used to start the Hipot test. These are normally open free contacts
and will not provide any voltage or current. The ratings of the contacts are 1A / 250 VAC