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6. Connection Remote I/O
Two 9 pin D-type connectors mounted on the rear panel provide REMOTE-INPUT-
OUTPUT control and information. These connectors mate with a standard 9 pin D-
type 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:
6.1 Remote Signal Outputs
The rear panel connector provides three output signals to remotely monitor PASS,
FAIL, and PROCESSING conditions. The monitoring signals are provided by three
normally open internal relays that toggle ON and OFF to indicate the condition of the
tester. The RESET OUT pulse 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 Hipot test while the units
are interfaced as a test system. The START OUT gives a momentary output pulse
that can be used to start a Hipot test. These are normally open free contacts and will
not provide any voltage or current. The ratings of the contacts are 1 AAC / 125 VAC
(0.5 ADC / 30 VDC). The signal outputs are provided on the 9 pin female D-type
connector. Below is a list that indicates what conditions activate each pin. When a
terminal becomes active the relay closes thereby allowing the external voltage to
operate an external device.
Pins 1 and 2 provide the PASS signal.
Pins 3 and 4 provide the FAIL signal.
Pins 5 and 6 provide the PROCESSING signal.
Pins 7 and 8 provide the RESET OUT signal.
Pins 7 and 9 provide the START OUT pulse signal.
