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Using the up and down arrow keys, scroll the highlighted area to the File you would like to
load and press the “Load” soft key. The file you selected will now load and the screen will
revert to the Perform Tests screen.
5.2.2 Single Step
Single step is a function that allows you to run one step at a time from a sequence of tests. At
the Perform Tests screen, use the up and down arrow keys or the ENTER key to scroll the
highlighted area to the step you wish to perform. Press the TEST button and the instrument
will initiate the single step and stop when finished without continuing to the next step. If you
press Test again without first pressing Reset, the next step will initiate, run to completion and
then stop. If a step fails and you wish to continue to the next step do not press Reset, if you
press Reset it will return you to the original starting step. After running a single step test, a
prompt will appear below the test file name telling you to Press TEST button to continue.
You may single step through an entire sequence in this way as long as you do not press Reset.
Once Reset is pressed it will return you to the originally selected step.
Turn the Single Step function ON and OFF by pressing the “Single Step” soft key. However,
if Security is enabled, single step may not be turned ON and OFF at the Perform Test screen.
Whatever state single step is in at the time security is enabled, is the state at which it shall
remain.
5.2.3 Fail Stop
Fail Stop is a function that will stop a sequence of tests at the step if a failure occurs. If the
fail stop is turned “ON” and a failure occurs (stopping the test), pressing the Test button again
will start the test sequence at the next step. If a step fails and you wish to continue to the
next step do not press Reset, if you press Reset it will return you to the original starting step.
If this function is turned off, the sequence of tests will continue to the end of the sequence
regardless of whether or not a failure has occurred. If the Fail stop is off and a failure occurs
during the test sequence, the RESET button will light and a short alarm will sound but the
sequence will continue to the end. At the end of the test sequence, the RESET button will
light and alarm will sound indicating failure during the sequence. Pressing the RESET
button will silence the alarm and reset the instrument. Turn the Fail Stop function ON and
OFF by pressing the “Fail Stop” soft key. If security is enabled you may not turn Fail Stop
ON and OFF using the “Fail Stop” soft key. Fail Stop automatically defaults to the setting
stored in the file when security is activated.
Fail Stop with Run and Touch Current tests
EXTECH recommends performing a Hipot test, with the Fail Stop “ON”, prior to performing
a Run Test or Touch Current test. Performing a Hipot test first can detect if a DUT is shorted
line to ground before applying line power to it.