75
Digital I/O
Outputs
The tester
’s outputs are “sink” outputs. When activated they will connect (or sink) a voltage to
ground, in effect turning ON the output circuit. The outputs are capable of sinking up to a
nominal 24 volts and 500 milliamps. To limit the output current, always ensure adequate
resistance between power supply and the output. When switching a voltage between 12 and
24 volts, the output will allow a slight current flow (about 1mA at 24 volts) when the output is
OFF.
Current cannot flow when the normal state of each output is off. Using the
Digital Outputs
settings in the User Preferences tester interface, you can set up test events to turn an output
ON or OFF. One test event sinks the output to ground, thereby allowing current flow through
the output circuit. A second event resets the output line to its original OFF state. If you select
the same event to set and reset the output, the tester will sink the output for a 10 millisecond
pulse. For step-by-step instructions on setting up
Digital Outputs,
on page
Each of the test events that change output status are listed below.
Test Event Name
Description
Bad Light Off
The front panel “Bad” light is off.
Bad Light On
The front panel “Bad” light is on.
Cable Attached
The tester sensed a connection between 2 or more test points.
Cable Counted Bad
The tester counted a cable “bad” in the test summary.
Cable Counted Good
The tester counted a cable “good” in the test summary.
Cable Removed
The tester sensed the cable is removed.
Count Intermittent
The tester counted a cable “intermittent” in the test summary.
Failed Self Test
The tester failed self-test when turned on.
Good Light On
The front panel “Good” light is on.
Good Light Off
The front panel “Good” light is off.
HV Delay Started
The tester started the delay before the HV test.
HV Test Delay Done
The tester completed the delay before the HV test.
HV Test Done (P/F)
The tester completed the high voltage test with either pass or fail.
HV Test Failed
The high-voltage test failed.
HV Test Passed
The high-voltage test passed.
HV Test Started
The tester started the high-voltage test.
HV Test Aborted
The tester aborted during the hipot test.
Is Intermittent
The tester detected an intermittent error in the DUT.
Learn Completed
The tester completed the cable learn process.
Learn Started
The tester began the cable learn process.
LV Test Done (P/F)
The tester completed the low-voltage test with either pass or fail.