27
PN: 81127
Rev 4, 6/2017
check
button to return to the test screen and start the test. Note that if there are two or more units
connected in parallel (see the Parallel | Series button in the test parameters screen) the Pretest current
will be equally divided between the multiple units. If in series the Pretest current will be equal to the
Pretest Current value setting.
Make sure that the Pretest Current value is below any instantaneous setting, or ground trip device
setting of the device under test.
In the manual test screen, in the Momentary Mode, each time the Control Knob (or the PC cursor arrows)
are moved the output will turn on for the Pulse On Time value entered, and will increment the value
entered in the Ramp Inc window (up or down). The test is automatically stopped when the Timer Stop
condition is true. To manually stop the test or turn the output off, press or click on the red
button, or
press the Simulate Contact
button.
If the Continuous Mode is selected the following parameters screen will be displayed (Figure 20).
Figure 20 - Continuous Mode Test Parameters Screen
In the Continuous Mode it will apply the test current set in the Requested Current Window, start the timer
running, and watch for the device under test to operate. If the device has not operated by the Max Time
setting, the test set will turn off indicating Maximum Time was reached. To manually increase / decrease
the output current press the Increment button and set the increment value. Once the test has started,
each time the PC up/down arrow keys are pressed, or the control knob on the STVI is rotated, the output
will increment up or down by the entered value. To manually stop the test or turn the output off, press or
click on the red
button, or press the Simulate Contact
button.
