12
10.
Ensure an adequate discharge time for the DUT.
When DCW or IR tests are performed, the DUT, test leads
and probes become highly charged. The STW-9000 has
discharge circuitry to discharge the DUT after each test.
The time required for a DUT to discharge depends on the
DUT and test voltage.
Never disconnect the safety tester before a discharge is
completed.
1.7.5 Basic Safety Checks
Background
The STW-9000 is a high voltage device and as such, daily
safety checks should be made to ensure safe operation.
1.
Ensure all test leads are not broken and are free from
defects such as cracks or splitting.
2.
Ensure the safety tester is always connected to an earth
ground.
3.
Test the safety tester operation with a low voltage/current
output:
Ensure the safety tester generates a FAIL
judgment when the HIGH VOLTAGE and
RETURN terminals are shorted (using the
lowest voltage/current as the testing
parameters).
WARNING
Do not use high voltages/currents when the HIGH
VOLTAGE and RETURN terminals are shorted. It may
result in damage to the instrument.